From bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 Mon Sep 17 00:00:00 2001 From: RajithaY Date: Tue, 25 Apr 2017 03:31:15 -0700 Subject: Adding qemu as a submodule of KVMFORNFV This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY --- qemu/hw/pci/Makefile.objs | 9 - qemu/hw/pci/msi.c | 421 -------- qemu/hw/pci/msix.c | 621 ----------- qemu/hw/pci/pci-stub.c | 37 - qemu/hw/pci/pci.c | 2517 --------------------------------------------- qemu/hw/pci/pci_bridge.c | 419 -------- qemu/hw/pci/pci_host.c | 207 ---- qemu/hw/pci/pcie.c | 649 ------------ qemu/hw/pci/pcie_aer.c | 1039 ------------------- qemu/hw/pci/pcie_host.c | 147 --- qemu/hw/pci/pcie_port.c | 179 ---- qemu/hw/pci/shpc.c | 721 ------------- qemu/hw/pci/slotid_cap.c | 46 - 13 files changed, 7012 deletions(-) delete mode 100644 qemu/hw/pci/Makefile.objs delete mode 100644 qemu/hw/pci/msi.c delete mode 100644 qemu/hw/pci/msix.c delete mode 100644 qemu/hw/pci/pci-stub.c delete mode 100644 qemu/hw/pci/pci.c delete mode 100644 qemu/hw/pci/pci_bridge.c delete mode 100644 qemu/hw/pci/pci_host.c delete mode 100644 qemu/hw/pci/pcie.c delete mode 100644 qemu/hw/pci/pcie_aer.c delete mode 100644 qemu/hw/pci/pcie_host.c delete mode 100644 qemu/hw/pci/pcie_port.c delete mode 100644 qemu/hw/pci/shpc.c delete mode 100644 qemu/hw/pci/slotid_cap.c (limited to 'qemu/hw/pci') diff --git a/qemu/hw/pci/Makefile.objs b/qemu/hw/pci/Makefile.objs deleted file mode 100644 index 9f905e634..000000000 --- a/qemu/hw/pci/Makefile.objs +++ /dev/null @@ -1,9 +0,0 @@ -common-obj-$(CONFIG_PCI) += pci.o pci_bridge.o -common-obj-$(CONFIG_PCI) += msix.o msi.o -common-obj-$(CONFIG_PCI) += shpc.o -common-obj-$(CONFIG_PCI) += slotid_cap.o -common-obj-$(CONFIG_PCI) += pci_host.o pcie_host.o -common-obj-$(CONFIG_PCI) += pcie.o pcie_aer.o pcie_port.o - -common-obj-$(call lnot,$(CONFIG_PCI)) += pci-stub.o -common-obj-$(CONFIG_ALL) += pci-stub.o diff --git a/qemu/hw/pci/msi.c b/qemu/hw/pci/msi.c deleted file mode 100644 index e0e64c2d9..000000000 --- a/qemu/hw/pci/msi.c +++ /dev/null @@ -1,421 +0,0 @@ -/* - * msi.c - * - * Copyright (c) 2010 Isaku Yamahata - * VA Linux Systems Japan K.K. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "hw/pci/msi.h" -#include "hw/xen/xen.h" -#include "qemu/range.h" - -/* PCI_MSI_ADDRESS_LO */ -#define PCI_MSI_ADDRESS_LO_MASK (~0x3) - -/* If we get rid of cap allocator, we won't need those. */ -#define PCI_MSI_32_SIZEOF 0x0a -#define PCI_MSI_64_SIZEOF 0x0e -#define PCI_MSI_32M_SIZEOF 0x14 -#define PCI_MSI_64M_SIZEOF 0x18 - -#define PCI_MSI_VECTORS_MAX 32 - -/* - * Flag for interrupt controllers to declare broken MSI/MSI-X support. - * values: false - broken; true - non-broken. - * - * Setting this flag to false will remove MSI/MSI-X capability from all devices. - * - * It is preferrable for controllers to set this to true (non-broken) even if - * they do not actually support MSI/MSI-X: guests normally probe the controller - * type and do not attempt to enable MSI/MSI-X with interrupt controllers not - * supporting such, so removing the capability is not required, and - * it seems cleaner to have a given device look the same for all boards. - * - * TODO: some existing controllers violate the above rule. Identify and fix them. - */ -bool msi_nonbroken; - -/* If we get rid of cap allocator, we won't need this. */ -static inline uint8_t msi_cap_sizeof(uint16_t flags) -{ - switch (flags & (PCI_MSI_FLAGS_MASKBIT | PCI_MSI_FLAGS_64BIT)) { - case PCI_MSI_FLAGS_MASKBIT | PCI_MSI_FLAGS_64BIT: - return PCI_MSI_64M_SIZEOF; - case PCI_MSI_FLAGS_64BIT: - return PCI_MSI_64_SIZEOF; - case PCI_MSI_FLAGS_MASKBIT: - return PCI_MSI_32M_SIZEOF; - case 0: - return PCI_MSI_32_SIZEOF; - default: - abort(); - break; - } - return 0; -} - -//#define MSI_DEBUG - -#ifdef MSI_DEBUG -# define MSI_DPRINTF(fmt, ...) \ - fprintf(stderr, "%s:%d " fmt, __func__, __LINE__, ## __VA_ARGS__) -#else -# define MSI_DPRINTF(fmt, ...) do { } while (0) -#endif -#define MSI_DEV_PRINTF(dev, fmt, ...) \ - MSI_DPRINTF("%s:%x " fmt, (dev)->name, (dev)->devfn, ## __VA_ARGS__) - -static inline unsigned int msi_nr_vectors(uint16_t flags) -{ - return 1U << - ((flags & PCI_MSI_FLAGS_QSIZE) >> ctz32(PCI_MSI_FLAGS_QSIZE)); -} - -static inline uint8_t msi_flags_off(const PCIDevice* dev) -{ - return dev->msi_cap + PCI_MSI_FLAGS; -} - -static inline uint8_t msi_address_lo_off(const PCIDevice* dev) -{ - return dev->msi_cap + PCI_MSI_ADDRESS_LO; -} - -static inline uint8_t msi_address_hi_off(const PCIDevice* dev) -{ - return dev->msi_cap + PCI_MSI_ADDRESS_HI; -} - -static inline uint8_t msi_data_off(const PCIDevice* dev, bool msi64bit) -{ - return dev->msi_cap + (msi64bit ? PCI_MSI_DATA_64 : PCI_MSI_DATA_32); -} - -static inline uint8_t msi_mask_off(const PCIDevice* dev, bool msi64bit) -{ - return dev->msi_cap + (msi64bit ? PCI_MSI_MASK_64 : PCI_MSI_MASK_32); -} - -static inline uint8_t msi_pending_off(const PCIDevice* dev, bool msi64bit) -{ - return dev->msi_cap + (msi64bit ? PCI_MSI_PENDING_64 : PCI_MSI_PENDING_32); -} - -/* - * Special API for POWER to configure the vectors through - * a side channel. Should never be used by devices. - */ -void msi_set_message(PCIDevice *dev, MSIMessage msg) -{ - uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); - bool msi64bit = flags & PCI_MSI_FLAGS_64BIT; - - if (msi64bit) { - pci_set_quad(dev->config + msi_address_lo_off(dev), msg.address); - } else { - pci_set_long(dev->config + msi_address_lo_off(dev), msg.address); - } - pci_set_word(dev->config + msi_data_off(dev, msi64bit), msg.data); -} - -MSIMessage msi_get_message(PCIDevice *dev, unsigned int vector) -{ - uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); - bool msi64bit = flags & PCI_MSI_FLAGS_64BIT; - unsigned int nr_vectors = msi_nr_vectors(flags); - MSIMessage msg; - - assert(vector < nr_vectors); - - if (msi64bit) { - msg.address = pci_get_quad(dev->config + msi_address_lo_off(dev)); - } else { - msg.address = pci_get_long(dev->config + msi_address_lo_off(dev)); - } - - /* upper bit 31:16 is zero */ - msg.data = pci_get_word(dev->config + msi_data_off(dev, msi64bit)); - if (nr_vectors > 1) { - msg.data &= ~(nr_vectors - 1); - msg.data |= vector; - } - - return msg; -} - -bool msi_enabled(const PCIDevice *dev) -{ - return msi_present(dev) && - (pci_get_word(dev->config + msi_flags_off(dev)) & - PCI_MSI_FLAGS_ENABLE); -} - -int msi_init(struct PCIDevice *dev, uint8_t offset, - unsigned int nr_vectors, bool msi64bit, bool msi_per_vector_mask) -{ - unsigned int vectors_order; - uint16_t flags; - uint8_t cap_size; - int config_offset; - - if (!msi_nonbroken) { - return -ENOTSUP; - } - - MSI_DEV_PRINTF(dev, - "init offset: 0x%"PRIx8" vector: %"PRId8 - " 64bit %d mask %d\n", - offset, nr_vectors, msi64bit, msi_per_vector_mask); - - assert(!(nr_vectors & (nr_vectors - 1))); /* power of 2 */ - assert(nr_vectors > 0); - assert(nr_vectors <= PCI_MSI_VECTORS_MAX); - /* the nr of MSI vectors is up to 32 */ - vectors_order = ctz32(nr_vectors); - - flags = vectors_order << ctz32(PCI_MSI_FLAGS_QMASK); - if (msi64bit) { - flags |= PCI_MSI_FLAGS_64BIT; - } - if (msi_per_vector_mask) { - flags |= PCI_MSI_FLAGS_MASKBIT; - } - - cap_size = msi_cap_sizeof(flags); - config_offset = pci_add_capability(dev, PCI_CAP_ID_MSI, offset, cap_size); - if (config_offset < 0) { - return config_offset; - } - - dev->msi_cap = config_offset; - dev->cap_present |= QEMU_PCI_CAP_MSI; - - pci_set_word(dev->config + msi_flags_off(dev), flags); - pci_set_word(dev->wmask + msi_flags_off(dev), - PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE); - pci_set_long(dev->wmask + msi_address_lo_off(dev), - PCI_MSI_ADDRESS_LO_MASK); - if (msi64bit) { - pci_set_long(dev->wmask + msi_address_hi_off(dev), 0xffffffff); - } - pci_set_word(dev->wmask + msi_data_off(dev, msi64bit), 0xffff); - - if (msi_per_vector_mask) { - /* Make mask bits 0 to nr_vectors - 1 writable. */ - pci_set_long(dev->wmask + msi_mask_off(dev, msi64bit), - 0xffffffff >> (PCI_MSI_VECTORS_MAX - nr_vectors)); - } - return config_offset; -} - -void msi_uninit(struct PCIDevice *dev) -{ - uint16_t flags; - uint8_t cap_size; - - if (!msi_present(dev)) { - return; - } - flags = pci_get_word(dev->config + msi_flags_off(dev)); - cap_size = msi_cap_sizeof(flags); - pci_del_capability(dev, PCI_CAP_ID_MSI, cap_size); - dev->cap_present &= ~QEMU_PCI_CAP_MSI; - - MSI_DEV_PRINTF(dev, "uninit\n"); -} - -void msi_reset(PCIDevice *dev) -{ - uint16_t flags; - bool msi64bit; - - if (!msi_present(dev)) { - return; - } - - flags = pci_get_word(dev->config + msi_flags_off(dev)); - flags &= ~(PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE); - msi64bit = flags & PCI_MSI_FLAGS_64BIT; - - pci_set_word(dev->config + msi_flags_off(dev), flags); - pci_set_long(dev->config + msi_address_lo_off(dev), 0); - if (msi64bit) { - pci_set_long(dev->config + msi_address_hi_off(dev), 0); - } - pci_set_word(dev->config + msi_data_off(dev, msi64bit), 0); - if (flags & PCI_MSI_FLAGS_MASKBIT) { - pci_set_long(dev->config + msi_mask_off(dev, msi64bit), 0); - pci_set_long(dev->config + msi_pending_off(dev, msi64bit), 0); - } - MSI_DEV_PRINTF(dev, "reset\n"); -} - -static bool msi_is_masked(const PCIDevice *dev, unsigned int vector) -{ - uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); - uint32_t mask, data; - bool msi64bit = flags & PCI_MSI_FLAGS_64BIT; - assert(vector < PCI_MSI_VECTORS_MAX); - - if (!(flags & PCI_MSI_FLAGS_MASKBIT)) { - return false; - } - - data = pci_get_word(dev->config + msi_data_off(dev, msi64bit)); - if (xen_is_pirq_msi(data)) { - return false; - } - - mask = pci_get_long(dev->config + - msi_mask_off(dev, flags & PCI_MSI_FLAGS_64BIT)); - return mask & (1U << vector); -} - -void msi_notify(PCIDevice *dev, unsigned int vector) -{ - uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); - bool msi64bit = flags & PCI_MSI_FLAGS_64BIT; - unsigned int nr_vectors = msi_nr_vectors(flags); - MSIMessage msg; - - assert(vector < nr_vectors); - if (msi_is_masked(dev, vector)) { - assert(flags & PCI_MSI_FLAGS_MASKBIT); - pci_long_test_and_set_mask( - dev->config + msi_pending_off(dev, msi64bit), 1U << vector); - MSI_DEV_PRINTF(dev, "pending vector 0x%x\n", vector); - return; - } - - msg = msi_get_message(dev, vector); - - MSI_DEV_PRINTF(dev, - "notify vector 0x%x" - " address: 0x%"PRIx64" data: 0x%"PRIx32"\n", - vector, msg.address, msg.data); - msi_send_message(dev, msg); -} - -void msi_send_message(PCIDevice *dev, MSIMessage msg) -{ - MemTxAttrs attrs = {}; - - attrs.requester_id = pci_requester_id(dev); - address_space_stl_le(&dev->bus_master_as, msg.address, msg.data, - attrs, NULL); -} - -/* Normally called by pci_default_write_config(). */ -void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len) -{ - uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); - bool msi64bit = flags & PCI_MSI_FLAGS_64BIT; - bool msi_per_vector_mask = flags & PCI_MSI_FLAGS_MASKBIT; - unsigned int nr_vectors; - uint8_t log_num_vecs; - uint8_t log_max_vecs; - unsigned int vector; - uint32_t pending; - - if (!msi_present(dev) || - !ranges_overlap(addr, len, dev->msi_cap, msi_cap_sizeof(flags))) { - return; - } - -#ifdef MSI_DEBUG - MSI_DEV_PRINTF(dev, "addr 0x%"PRIx32" val 0x%"PRIx32" len %d\n", - addr, val, len); - MSI_DEV_PRINTF(dev, "ctrl: 0x%"PRIx16" address: 0x%"PRIx32, - flags, - pci_get_long(dev->config + msi_address_lo_off(dev))); - if (msi64bit) { - fprintf(stderr, " address-hi: 0x%"PRIx32, - pci_get_long(dev->config + msi_address_hi_off(dev))); - } - fprintf(stderr, " data: 0x%"PRIx16, - pci_get_word(dev->config + msi_data_off(dev, msi64bit))); - if (flags & PCI_MSI_FLAGS_MASKBIT) { - fprintf(stderr, " mask 0x%"PRIx32" pending 0x%"PRIx32, - pci_get_long(dev->config + msi_mask_off(dev, msi64bit)), - pci_get_long(dev->config + msi_pending_off(dev, msi64bit))); - } - fprintf(stderr, "\n"); -#endif - - if (!(flags & PCI_MSI_FLAGS_ENABLE)) { - return; - } - - /* - * Now MSI is enabled, clear INTx# interrupts. - * the driver is prohibited from writing enable bit to mask - * a service request. But the guest OS could do this. - * So we just discard the interrupts as moderate fallback. - * - * 6.8.3.3. Enabling Operation - * While enabled for MSI or MSI-X operation, a function is prohibited - * from using its INTx# pin (if implemented) to request - * service (MSI, MSI-X, and INTx# are mutually exclusive). - */ - pci_device_deassert_intx(dev); - - /* - * nr_vectors might be set bigger than capable. So clamp it. - * This is not legal by spec, so we can do anything we like, - * just don't crash the host - */ - log_num_vecs = - (flags & PCI_MSI_FLAGS_QSIZE) >> ctz32(PCI_MSI_FLAGS_QSIZE); - log_max_vecs = - (flags & PCI_MSI_FLAGS_QMASK) >> ctz32(PCI_MSI_FLAGS_QMASK); - if (log_num_vecs > log_max_vecs) { - flags &= ~PCI_MSI_FLAGS_QSIZE; - flags |= log_max_vecs << ctz32(PCI_MSI_FLAGS_QSIZE); - pci_set_word(dev->config + msi_flags_off(dev), flags); - } - - if (!msi_per_vector_mask) { - /* if per vector masking isn't supported, - there is no pending interrupt. */ - return; - } - - nr_vectors = msi_nr_vectors(flags); - - /* This will discard pending interrupts, if any. */ - pending = pci_get_long(dev->config + msi_pending_off(dev, msi64bit)); - pending &= 0xffffffff >> (PCI_MSI_VECTORS_MAX - nr_vectors); - pci_set_long(dev->config + msi_pending_off(dev, msi64bit), pending); - - /* deliver pending interrupts which are unmasked */ - for (vector = 0; vector < nr_vectors; ++vector) { - if (msi_is_masked(dev, vector) || !(pending & (1U << vector))) { - continue; - } - - pci_long_test_and_clear_mask( - dev->config + msi_pending_off(dev, msi64bit), 1U << vector); - msi_notify(dev, vector); - } -} - -unsigned int msi_nr_vectors_allocated(const PCIDevice *dev) -{ - uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); - return msi_nr_vectors(flags); -} diff --git a/qemu/hw/pci/msix.c b/qemu/hw/pci/msix.c deleted file mode 100644 index b75f0e9c4..000000000 --- a/qemu/hw/pci/msix.c +++ /dev/null @@ -1,621 +0,0 @@ -/* - * MSI-X device support - * - * This module includes support for MSI-X in pci devices. - * - * Author: Michael S. Tsirkin - * - * Copyright (c) 2009, Red Hat Inc, Michael S. Tsirkin (mst@redhat.com) - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - * Contributions after 2012-01-13 are licensed under the terms of the - * GNU GPL, version 2 or (at your option) any later version. - */ - -#include "qemu/osdep.h" -#include "hw/hw.h" -#include "hw/pci/msi.h" -#include "hw/pci/msix.h" -#include "hw/pci/pci.h" -#include "hw/xen/xen.h" -#include "qemu/range.h" - -#define MSIX_CAP_LENGTH 12 - -/* MSI enable bit and maskall bit are in byte 1 in FLAGS register */ -#define MSIX_CONTROL_OFFSET (PCI_MSIX_FLAGS + 1) -#define MSIX_ENABLE_MASK (PCI_MSIX_FLAGS_ENABLE >> 8) -#define MSIX_MASKALL_MASK (PCI_MSIX_FLAGS_MASKALL >> 8) - -MSIMessage msix_get_message(PCIDevice *dev, unsigned vector) -{ - uint8_t *table_entry = dev->msix_table + vector * PCI_MSIX_ENTRY_SIZE; - MSIMessage msg; - - msg.address = pci_get_quad(table_entry + PCI_MSIX_ENTRY_LOWER_ADDR); - msg.data = pci_get_long(table_entry + PCI_MSIX_ENTRY_DATA); - return msg; -} - -/* - * Special API for POWER to configure the vectors through - * a side channel. Should never be used by devices. - */ -void msix_set_message(PCIDevice *dev, int vector, struct MSIMessage msg) -{ - uint8_t *table_entry = dev->msix_table + vector * PCI_MSIX_ENTRY_SIZE; - - pci_set_quad(table_entry + PCI_MSIX_ENTRY_LOWER_ADDR, msg.address); - pci_set_long(table_entry + PCI_MSIX_ENTRY_DATA, msg.data); - table_entry[PCI_MSIX_ENTRY_VECTOR_CTRL] &= ~PCI_MSIX_ENTRY_CTRL_MASKBIT; -} - -static uint8_t msix_pending_mask(int vector) -{ - return 1 << (vector % 8); -} - -static uint8_t *msix_pending_byte(PCIDevice *dev, int vector) -{ - return dev->msix_pba + vector / 8; -} - -static int msix_is_pending(PCIDevice *dev, int vector) -{ - return *msix_pending_byte(dev, vector) & msix_pending_mask(vector); -} - -void msix_set_pending(PCIDevice *dev, unsigned int vector) -{ - *msix_pending_byte(dev, vector) |= msix_pending_mask(vector); -} - -static void msix_clr_pending(PCIDevice *dev, int vector) -{ - *msix_pending_byte(dev, vector) &= ~msix_pending_mask(vector); -} - -static bool msix_vector_masked(PCIDevice *dev, unsigned int vector, bool fmask) -{ - unsigned offset = vector * PCI_MSIX_ENTRY_SIZE; - uint8_t *data = &dev->msix_table[offset + PCI_MSIX_ENTRY_DATA]; - /* MSIs on Xen can be remapped into pirqs. In those cases, masking - * and unmasking go through the PV evtchn path. */ - if (xen_enabled() && xen_is_pirq_msi(pci_get_long(data))) { - return false; - } - return fmask || dev->msix_table[offset + PCI_MSIX_ENTRY_VECTOR_CTRL] & - PCI_MSIX_ENTRY_CTRL_MASKBIT; -} - -bool msix_is_masked(PCIDevice *dev, unsigned int vector) -{ - return msix_vector_masked(dev, vector, dev->msix_function_masked); -} - -static void msix_fire_vector_notifier(PCIDevice *dev, - unsigned int vector, bool is_masked) -{ - MSIMessage msg; - int ret; - - if (!dev->msix_vector_use_notifier) { - return; - } - if (is_masked) { - dev->msix_vector_release_notifier(dev, vector); - } else { - msg = msix_get_message(dev, vector); - ret = dev->msix_vector_use_notifier(dev, vector, msg); - assert(ret >= 0); - } -} - -static void msix_handle_mask_update(PCIDevice *dev, int vector, bool was_masked) -{ - bool is_masked = msix_is_masked(dev, vector); - - if (is_masked == was_masked) { - return; - } - - msix_fire_vector_notifier(dev, vector, is_masked); - - if (!is_masked && msix_is_pending(dev, vector)) { - msix_clr_pending(dev, vector); - msix_notify(dev, vector); - } -} - -static void msix_update_function_masked(PCIDevice *dev) -{ - dev->msix_function_masked = !msix_enabled(dev) || - (dev->config[dev->msix_cap + MSIX_CONTROL_OFFSET] & MSIX_MASKALL_MASK); -} - -/* Handle MSI-X capability config write. */ -void msix_write_config(PCIDevice *dev, uint32_t addr, - uint32_t val, int len) -{ - unsigned enable_pos = dev->msix_cap + MSIX_CONTROL_OFFSET; - int vector; - bool was_masked; - - if (!msix_present(dev) || !range_covers_byte(addr, len, enable_pos)) { - return; - } - - was_masked = dev->msix_function_masked; - msix_update_function_masked(dev); - - if (!msix_enabled(dev)) { - return; - } - - pci_device_deassert_intx(dev); - - if (dev->msix_function_masked == was_masked) { - return; - } - - for (vector = 0; vector < dev->msix_entries_nr; ++vector) { - msix_handle_mask_update(dev, vector, - msix_vector_masked(dev, vector, was_masked)); - } -} - -static uint64_t msix_table_mmio_read(void *opaque, hwaddr addr, - unsigned size) -{ - PCIDevice *dev = opaque; - - return pci_get_long(dev->msix_table + addr); -} - -static void msix_table_mmio_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) -{ - PCIDevice *dev = opaque; - int vector = addr / PCI_MSIX_ENTRY_SIZE; - bool was_masked; - - was_masked = msix_is_masked(dev, vector); - pci_set_long(dev->msix_table + addr, val); - msix_handle_mask_update(dev, vector, was_masked); -} - -static const MemoryRegionOps msix_table_mmio_ops = { - .read = msix_table_mmio_read, - .write = msix_table_mmio_write, - .endianness = DEVICE_LITTLE_ENDIAN, - .valid = { - .min_access_size = 4, - .max_access_size = 4, - }, -}; - -static uint64_t msix_pba_mmio_read(void *opaque, hwaddr addr, - unsigned size) -{ - PCIDevice *dev = opaque; - if (dev->msix_vector_poll_notifier) { - unsigned vector_start = addr * 8; - unsigned vector_end = MIN(addr + size * 8, dev->msix_entries_nr); - dev->msix_vector_poll_notifier(dev, vector_start, vector_end); - } - - return pci_get_long(dev->msix_pba + addr); -} - -static void msix_pba_mmio_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) -{ -} - -static const MemoryRegionOps msix_pba_mmio_ops = { - .read = msix_pba_mmio_read, - .write = msix_pba_mmio_write, - .endianness = DEVICE_LITTLE_ENDIAN, - .valid = { - .min_access_size = 4, - .max_access_size = 4, - }, -}; - -static void msix_mask_all(struct PCIDevice *dev, unsigned nentries) -{ - int vector; - - for (vector = 0; vector < nentries; ++vector) { - unsigned offset = - vector * PCI_MSIX_ENTRY_SIZE + PCI_MSIX_ENTRY_VECTOR_CTRL; - bool was_masked = msix_is_masked(dev, vector); - - dev->msix_table[offset] |= PCI_MSIX_ENTRY_CTRL_MASKBIT; - msix_handle_mask_update(dev, vector, was_masked); - } -} - -/* Initialize the MSI-X structures */ -int msix_init(struct PCIDevice *dev, unsigned short nentries, - MemoryRegion *table_bar, uint8_t table_bar_nr, - unsigned table_offset, MemoryRegion *pba_bar, - uint8_t pba_bar_nr, unsigned pba_offset, uint8_t cap_pos) -{ - int cap; - unsigned table_size, pba_size; - uint8_t *config; - - /* Nothing to do if MSI is not supported by interrupt controller */ - if (!msi_nonbroken) { - return -ENOTSUP; - } - - if (nentries < 1 || nentries > PCI_MSIX_FLAGS_QSIZE + 1) { - return -EINVAL; - } - - table_size = nentries * PCI_MSIX_ENTRY_SIZE; - pba_size = QEMU_ALIGN_UP(nentries, 64) / 8; - - /* Sanity test: table & pba don't overlap, fit within BARs, min aligned */ - if ((table_bar_nr == pba_bar_nr && - ranges_overlap(table_offset, table_size, pba_offset, pba_size)) || - table_offset + table_size > memory_region_size(table_bar) || - pba_offset + pba_size > memory_region_size(pba_bar) || - (table_offset | pba_offset) & PCI_MSIX_FLAGS_BIRMASK) { - return -EINVAL; - } - - cap = pci_add_capability(dev, PCI_CAP_ID_MSIX, cap_pos, MSIX_CAP_LENGTH); - if (cap < 0) { - return cap; - } - - dev->msix_cap = cap; - dev->cap_present |= QEMU_PCI_CAP_MSIX; - config = dev->config + cap; - - pci_set_word(config + PCI_MSIX_FLAGS, nentries - 1); - dev->msix_entries_nr = nentries; - dev->msix_function_masked = true; - - pci_set_long(config + PCI_MSIX_TABLE, table_offset | table_bar_nr); - pci_set_long(config + PCI_MSIX_PBA, pba_offset | pba_bar_nr); - - /* Make flags bit writable. */ - dev->wmask[cap + MSIX_CONTROL_OFFSET] |= MSIX_ENABLE_MASK | - MSIX_MASKALL_MASK; - - dev->msix_table = g_malloc0(table_size); - dev->msix_pba = g_malloc0(pba_size); - dev->msix_entry_used = g_malloc0(nentries * sizeof *dev->msix_entry_used); - - msix_mask_all(dev, nentries); - - memory_region_init_io(&dev->msix_table_mmio, OBJECT(dev), &msix_table_mmio_ops, dev, - "msix-table", table_size); - memory_region_add_subregion(table_bar, table_offset, &dev->msix_table_mmio); - memory_region_init_io(&dev->msix_pba_mmio, OBJECT(dev), &msix_pba_mmio_ops, dev, - "msix-pba", pba_size); - memory_region_add_subregion(pba_bar, pba_offset, &dev->msix_pba_mmio); - - return 0; -} - -int msix_init_exclusive_bar(PCIDevice *dev, unsigned short nentries, - uint8_t bar_nr) -{ - int ret; - char *name; - uint32_t bar_size = 4096; - uint32_t bar_pba_offset = bar_size / 2; - uint32_t bar_pba_size = (nentries / 8 + 1) * 8; - - /* - * Migration compatibility dictates that this remains a 4k - * BAR with the vector table in the lower half and PBA in - * the upper half for nentries which is lower or equal to 128. - * No need to care about using more than 65 entries for legacy - * machine types who has at most 64 queues. - */ - if (nentries * PCI_MSIX_ENTRY_SIZE > bar_pba_offset) { - bar_pba_offset = nentries * PCI_MSIX_ENTRY_SIZE; - } - - if (bar_pba_offset + bar_pba_size > 4096) { - bar_size = bar_pba_offset + bar_pba_size; - } - - bar_size = pow2ceil(bar_size); - - name = g_strdup_printf("%s-msix", dev->name); - memory_region_init(&dev->msix_exclusive_bar, OBJECT(dev), name, bar_size); - g_free(name); - - ret = msix_init(dev, nentries, &dev->msix_exclusive_bar, bar_nr, - 0, &dev->msix_exclusive_bar, - bar_nr, bar_pba_offset, - 0); - if (ret) { - return ret; - } - - pci_register_bar(dev, bar_nr, PCI_BASE_ADDRESS_SPACE_MEMORY, - &dev->msix_exclusive_bar); - - return 0; -} - -static void msix_free_irq_entries(PCIDevice *dev) -{ - int vector; - - for (vector = 0; vector < dev->msix_entries_nr; ++vector) { - dev->msix_entry_used[vector] = 0; - msix_clr_pending(dev, vector); - } -} - -static void msix_clear_all_vectors(PCIDevice *dev) -{ - int vector; - - for (vector = 0; vector < dev->msix_entries_nr; ++vector) { - msix_clr_pending(dev, vector); - } -} - -/* Clean up resources for the device. */ -void msix_uninit(PCIDevice *dev, MemoryRegion *table_bar, MemoryRegion *pba_bar) -{ - if (!msix_present(dev)) { - return; - } - pci_del_capability(dev, PCI_CAP_ID_MSIX, MSIX_CAP_LENGTH); - dev->msix_cap = 0; - msix_free_irq_entries(dev); - dev->msix_entries_nr = 0; - memory_region_del_subregion(pba_bar, &dev->msix_pba_mmio); - g_free(dev->msix_pba); - dev->msix_pba = NULL; - memory_region_del_subregion(table_bar, &dev->msix_table_mmio); - g_free(dev->msix_table); - dev->msix_table = NULL; - g_free(dev->msix_entry_used); - dev->msix_entry_used = NULL; - dev->cap_present &= ~QEMU_PCI_CAP_MSIX; -} - -void msix_uninit_exclusive_bar(PCIDevice *dev) -{ - if (msix_present(dev)) { - msix_uninit(dev, &dev->msix_exclusive_bar, &dev->msix_exclusive_bar); - } -} - -void msix_save(PCIDevice *dev, QEMUFile *f) -{ - unsigned n = dev->msix_entries_nr; - - if (!msix_present(dev)) { - return; - } - - qemu_put_buffer(f, dev->msix_table, n * PCI_MSIX_ENTRY_SIZE); - qemu_put_buffer(f, dev->msix_pba, (n + 7) / 8); -} - -/* Should be called after restoring the config space. */ -void msix_load(PCIDevice *dev, QEMUFile *f) -{ - unsigned n = dev->msix_entries_nr; - unsigned int vector; - - if (!msix_present(dev)) { - return; - } - - msix_clear_all_vectors(dev); - qemu_get_buffer(f, dev->msix_table, n * PCI_MSIX_ENTRY_SIZE); - qemu_get_buffer(f, dev->msix_pba, (n + 7) / 8); - msix_update_function_masked(dev); - - for (vector = 0; vector < n; vector++) { - msix_handle_mask_update(dev, vector, true); - } -} - -/* Does device support MSI-X? */ -int msix_present(PCIDevice *dev) -{ - return dev->cap_present & QEMU_PCI_CAP_MSIX; -} - -/* Is MSI-X enabled? */ -int msix_enabled(PCIDevice *dev) -{ - return (dev->cap_present & QEMU_PCI_CAP_MSIX) && - (dev->config[dev->msix_cap + MSIX_CONTROL_OFFSET] & - MSIX_ENABLE_MASK); -} - -/* Send an MSI-X message */ -void msix_notify(PCIDevice *dev, unsigned vector) -{ - MSIMessage msg; - - if (vector >= dev->msix_entries_nr || !dev->msix_entry_used[vector]) - return; - if (msix_is_masked(dev, vector)) { - msix_set_pending(dev, vector); - return; - } - - msg = msix_get_message(dev, vector); - - msi_send_message(dev, msg); -} - -void msix_reset(PCIDevice *dev) -{ - if (!msix_present(dev)) { - return; - } - msix_clear_all_vectors(dev); - dev->config[dev->msix_cap + MSIX_CONTROL_OFFSET] &= - ~dev->wmask[dev->msix_cap + MSIX_CONTROL_OFFSET]; - memset(dev->msix_table, 0, dev->msix_entries_nr * PCI_MSIX_ENTRY_SIZE); - memset(dev->msix_pba, 0, QEMU_ALIGN_UP(dev->msix_entries_nr, 64) / 8); - msix_mask_all(dev, dev->msix_entries_nr); -} - -/* PCI spec suggests that devices make it possible for software to configure - * less vectors than supported by the device, but does not specify a standard - * mechanism for devices to do so. - * - * We support this by asking devices to declare vectors software is going to - * actually use, and checking this on the notification path. Devices that - * don't want to follow the spec suggestion can declare all vectors as used. */ - -/* Mark vector as used. */ -int msix_vector_use(PCIDevice *dev, unsigned vector) -{ - if (vector >= dev->msix_entries_nr) - return -EINVAL; - dev->msix_entry_used[vector]++; - return 0; -} - -/* Mark vector as unused. */ -void msix_vector_unuse(PCIDevice *dev, unsigned vector) -{ - if (vector >= dev->msix_entries_nr || !dev->msix_entry_used[vector]) { - return; - } - if (--dev->msix_entry_used[vector]) { - return; - } - msix_clr_pending(dev, vector); -} - -void msix_unuse_all_vectors(PCIDevice *dev) -{ - if (!msix_present(dev)) { - return; - } - msix_free_irq_entries(dev); -} - -unsigned int msix_nr_vectors_allocated(const PCIDevice *dev) -{ - return dev->msix_entries_nr; -} - -static int msix_set_notifier_for_vector(PCIDevice *dev, unsigned int vector) -{ - MSIMessage msg; - - if (msix_is_masked(dev, vector)) { - return 0; - } - msg = msix_get_message(dev, vector); - return dev->msix_vector_use_notifier(dev, vector, msg); -} - -static void msix_unset_notifier_for_vector(PCIDevice *dev, unsigned int vector) -{ - if (msix_is_masked(dev, vector)) { - return; - } - dev->msix_vector_release_notifier(dev, vector); -} - -int msix_set_vector_notifiers(PCIDevice *dev, - MSIVectorUseNotifier use_notifier, - MSIVectorReleaseNotifier release_notifier, - MSIVectorPollNotifier poll_notifier) -{ - int vector, ret; - - assert(use_notifier && release_notifier); - - dev->msix_vector_use_notifier = use_notifier; - dev->msix_vector_release_notifier = release_notifier; - dev->msix_vector_poll_notifier = poll_notifier; - - if ((dev->config[dev->msix_cap + MSIX_CONTROL_OFFSET] & - (MSIX_ENABLE_MASK | MSIX_MASKALL_MASK)) == MSIX_ENABLE_MASK) { - for (vector = 0; vector < dev->msix_entries_nr; vector++) { - ret = msix_set_notifier_for_vector(dev, vector); - if (ret < 0) { - goto undo; - } - } - } - if (dev->msix_vector_poll_notifier) { - dev->msix_vector_poll_notifier(dev, 0, dev->msix_entries_nr); - } - return 0; - -undo: - while (--vector >= 0) { - msix_unset_notifier_for_vector(dev, vector); - } - dev->msix_vector_use_notifier = NULL; - dev->msix_vector_release_notifier = NULL; - return ret; -} - -void msix_unset_vector_notifiers(PCIDevice *dev) -{ - int vector; - - assert(dev->msix_vector_use_notifier && - dev->msix_vector_release_notifier); - - if ((dev->config[dev->msix_cap + MSIX_CONTROL_OFFSET] & - (MSIX_ENABLE_MASK | MSIX_MASKALL_MASK)) == MSIX_ENABLE_MASK) { - for (vector = 0; vector < dev->msix_entries_nr; vector++) { - msix_unset_notifier_for_vector(dev, vector); - } - } - dev->msix_vector_use_notifier = NULL; - dev->msix_vector_release_notifier = NULL; - dev->msix_vector_poll_notifier = NULL; -} - -static void put_msix_state(QEMUFile *f, void *pv, size_t size) -{ - msix_save(pv, f); -} - -static int get_msix_state(QEMUFile *f, void *pv, size_t size) -{ - msix_load(pv, f); - return 0; -} - -static VMStateInfo vmstate_info_msix = { - .name = "msix state", - .get = get_msix_state, - .put = put_msix_state, -}; - -const VMStateDescription vmstate_msix = { - .name = "msix", - .fields = (VMStateField[]) { - { - .name = "msix", - .version_id = 0, - .field_exists = NULL, - .size = 0, /* ouch */ - .info = &vmstate_info_msix, - .flags = VMS_SINGLE, - .offset = 0, - }, - VMSTATE_END_OF_LIST() - } -}; diff --git a/qemu/hw/pci/pci-stub.c b/qemu/hw/pci/pci-stub.c deleted file mode 100644 index 36d2c430c..000000000 --- a/qemu/hw/pci/pci-stub.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * PCI stubs for platforms that don't support pci bus. - * - * Copyright (c) 2010 Isaku Yamahata - * VA Linux Systems Japan K.K. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "sysemu/sysemu.h" -#include "monitor/monitor.h" -#include "qapi/qmp/qerror.h" -#include "hw/pci/pci.h" -#include "qmp-commands.h" - -PciInfoList *qmp_query_pci(Error **errp) -{ - error_setg(errp, QERR_UNSUPPORTED); - return NULL; -} - -void hmp_pcie_aer_inject_error(Monitor *mon, const QDict *qdict) -{ - monitor_printf(mon, "PCI devices not supported\n"); -} diff --git a/qemu/hw/pci/pci.c b/qemu/hw/pci/pci.c deleted file mode 100644 index bb605efae..000000000 --- a/qemu/hw/pci/pci.c +++ /dev/null @@ -1,2517 +0,0 @@ -/* - * QEMU PCI bus manager - * - * Copyright (c) 2004 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu/osdep.h" -#include "hw/hw.h" -#include "hw/pci/pci.h" -#include "hw/pci/pci_bridge.h" -#include "hw/pci/pci_bus.h" -#include "hw/pci/pci_host.h" -#include "monitor/monitor.h" -#include "net/net.h" -#include "sysemu/sysemu.h" -#include "hw/loader.h" -#include "qemu/error-report.h" -#include "qemu/range.h" -#include "qmp-commands.h" -#include "trace.h" -#include "hw/pci/msi.h" -#include "hw/pci/msix.h" -#include "exec/address-spaces.h" -#include "hw/hotplug.h" -#include "hw/boards.h" -#include "qemu/cutils.h" - -//#define DEBUG_PCI -#ifdef DEBUG_PCI -# define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) -#else -# define PCI_DPRINTF(format, ...) do { } while (0) -#endif - -static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent); -static char *pcibus_get_dev_path(DeviceState *dev); -static char *pcibus_get_fw_dev_path(DeviceState *dev); -static void pcibus_reset(BusState *qbus); - -static Property pci_props[] = { - DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1), - DEFINE_PROP_STRING("romfile", PCIDevice, romfile), - DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1), - DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present, - QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false), - DEFINE_PROP_BIT("command_serr_enable", PCIDevice, cap_present, - QEMU_PCI_CAP_SERR_BITNR, true), - DEFINE_PROP_END_OF_LIST() -}; - -static const VMStateDescription vmstate_pcibus = { - .name = "PCIBUS", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_INT32_EQUAL(nirq, PCIBus), - VMSTATE_VARRAY_INT32(irq_count, PCIBus, - nirq, 0, vmstate_info_int32, - int32_t), - VMSTATE_END_OF_LIST() - } -}; - -static void pci_bus_realize(BusState *qbus, Error **errp) -{ - PCIBus *bus = PCI_BUS(qbus); - - vmstate_register(NULL, -1, &vmstate_pcibus, bus); -} - -static void pci_bus_unrealize(BusState *qbus, Error **errp) -{ - PCIBus *bus = PCI_BUS(qbus); - - vmstate_unregister(NULL, &vmstate_pcibus, bus); -} - -static bool pcibus_is_root(PCIBus *bus) -{ - return !bus->parent_dev; -} - -static int pcibus_num(PCIBus *bus) -{ - if (pcibus_is_root(bus)) { - return 0; /* pci host bridge */ - } - return bus->parent_dev->config[PCI_SECONDARY_BUS]; -} - -static uint16_t pcibus_numa_node(PCIBus *bus) -{ - return NUMA_NODE_UNASSIGNED; -} - -static void pci_bus_class_init(ObjectClass *klass, void *data) -{ - BusClass *k = BUS_CLASS(klass); - PCIBusClass *pbc = PCI_BUS_CLASS(klass); - - k->print_dev = pcibus_dev_print; - k->get_dev_path = pcibus_get_dev_path; - k->get_fw_dev_path = pcibus_get_fw_dev_path; - k->realize = pci_bus_realize; - k->unrealize = pci_bus_unrealize; - k->reset = pcibus_reset; - - pbc->is_root = pcibus_is_root; - pbc->bus_num = pcibus_num; - pbc->numa_node = pcibus_numa_node; -} - -static const TypeInfo pci_bus_info = { - .name = TYPE_PCI_BUS, - .parent = TYPE_BUS, - .instance_size = sizeof(PCIBus), - .class_size = sizeof(PCIBusClass), - .class_init = pci_bus_class_init, -}; - -static const TypeInfo pcie_bus_info = { - .name = TYPE_PCIE_BUS, - .parent = TYPE_PCI_BUS, -}; - -static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num); -static void pci_update_mappings(PCIDevice *d); -static void pci_irq_handler(void *opaque, int irq_num, int level); -static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom, Error **); -static void pci_del_option_rom(PCIDevice *pdev); - -static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET; -static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU; - -static QLIST_HEAD(, PCIHostState) pci_host_bridges; - -int pci_bar(PCIDevice *d, int reg) -{ - uint8_t type; - - if (reg != PCI_ROM_SLOT) - return PCI_BASE_ADDRESS_0 + reg * 4; - - type = d->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; - return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS; -} - -static inline int pci_irq_state(PCIDevice *d, int irq_num) -{ - return (d->irq_state >> irq_num) & 0x1; -} - -static inline void pci_set_irq_state(PCIDevice *d, int irq_num, int level) -{ - d->irq_state &= ~(0x1 << irq_num); - d->irq_state |= level << irq_num; -} - -static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change) -{ - PCIBus *bus; - for (;;) { - bus = pci_dev->bus; - irq_num = bus->map_irq(pci_dev, irq_num); - if (bus->set_irq) - break; - pci_dev = bus->parent_dev; - } - bus->irq_count[irq_num] += change; - bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0); -} - -int pci_bus_get_irq_level(PCIBus *bus, int irq_num) -{ - assert(irq_num >= 0); - assert(irq_num < bus->nirq); - return !!bus->irq_count[irq_num]; -} - -/* Update interrupt status bit in config space on interrupt - * state change. */ -static void pci_update_irq_status(PCIDevice *dev) -{ - if (dev->irq_state) { - dev->config[PCI_STATUS] |= PCI_STATUS_INTERRUPT; - } else { - dev->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; - } -} - -void pci_device_deassert_intx(PCIDevice *dev) -{ - int i; - for (i = 0; i < PCI_NUM_PINS; ++i) { - pci_irq_handler(dev, i, 0); - } -} - -static void pci_do_device_reset(PCIDevice *dev) -{ - int r; - - pci_device_deassert_intx(dev); - assert(dev->irq_state == 0); - - /* Clear all writable bits */ - pci_word_test_and_clear_mask(dev->config + PCI_COMMAND, - pci_get_word(dev->wmask + PCI_COMMAND) | - pci_get_word(dev->w1cmask + PCI_COMMAND)); - pci_word_test_and_clear_mask(dev->config + PCI_STATUS, - pci_get_word(dev->wmask + PCI_STATUS) | - pci_get_word(dev->w1cmask + PCI_STATUS)); - dev->config[PCI_CACHE_LINE_SIZE] = 0x0; - dev->config[PCI_INTERRUPT_LINE] = 0x0; - for (r = 0; r < PCI_NUM_REGIONS; ++r) { - PCIIORegion *region = &dev->io_regions[r]; - if (!region->size) { - continue; - } - - if (!(region->type & PCI_BASE_ADDRESS_SPACE_IO) && - region->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { - pci_set_quad(dev->config + pci_bar(dev, r), region->type); - } else { - pci_set_long(dev->config + pci_bar(dev, r), region->type); - } - } - pci_update_mappings(dev); - - msi_reset(dev); - msix_reset(dev); -} - -/* - * This function is called on #RST and FLR. - * FLR if PCI_EXP_DEVCTL_BCR_FLR is set - */ -void pci_device_reset(PCIDevice *dev) -{ - qdev_reset_all(&dev->qdev); - pci_do_device_reset(dev); -} - -/* - * Trigger pci bus reset under a given bus. - * Called via qbus_reset_all on RST# assert, after the devices - * have been reset qdev_reset_all-ed already. - */ -static void pcibus_reset(BusState *qbus) -{ - PCIBus *bus = DO_UPCAST(PCIBus, qbus, qbus); - int i; - - for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { - if (bus->devices[i]) { - pci_do_device_reset(bus->devices[i]); - } - } - - for (i = 0; i < bus->nirq; i++) { - assert(bus->irq_count[i] == 0); - } -} - -static void pci_host_bus_register(DeviceState *host) -{ - PCIHostState *host_bridge = PCI_HOST_BRIDGE(host); - - QLIST_INSERT_HEAD(&pci_host_bridges, host_bridge, next); -} - -PCIBus *pci_find_primary_bus(void) -{ - PCIBus *primary_bus = NULL; - PCIHostState *host; - - QLIST_FOREACH(host, &pci_host_bridges, next) { - if (primary_bus) { - /* We have multiple root buses, refuse to select a primary */ - return NULL; - } - primary_bus = host->bus; - } - - return primary_bus; -} - -PCIBus *pci_device_root_bus(const PCIDevice *d) -{ - PCIBus *bus = d->bus; - - while (!pci_bus_is_root(bus)) { - d = bus->parent_dev; - assert(d != NULL); - - bus = d->bus; - } - - return bus; -} - -const char *pci_root_bus_path(PCIDevice *dev) -{ - PCIBus *rootbus = pci_device_root_bus(dev); - PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent); - PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge); - - assert(host_bridge->bus == rootbus); - - if (hc->root_bus_path) { - return (*hc->root_bus_path)(host_bridge, rootbus); - } - - return rootbus->qbus.name; -} - -static void pci_bus_init(PCIBus *bus, DeviceState *parent, - MemoryRegion *address_space_mem, - MemoryRegion *address_space_io, - uint8_t devfn_min) -{ - assert(PCI_FUNC(devfn_min) == 0); - bus->devfn_min = devfn_min; - bus->address_space_mem = address_space_mem; - bus->address_space_io = address_space_io; - - /* host bridge */ - QLIST_INIT(&bus->child); - - pci_host_bus_register(parent); -} - -bool pci_bus_is_express(PCIBus *bus) -{ - return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS); -} - -bool pci_bus_is_root(PCIBus *bus) -{ - return PCI_BUS_GET_CLASS(bus)->is_root(bus); -} - -void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, - const char *name, - MemoryRegion *address_space_mem, - MemoryRegion *address_space_io, - uint8_t devfn_min, const char *typename) -{ - qbus_create_inplace(bus, bus_size, typename, parent, name); - pci_bus_init(bus, parent, address_space_mem, address_space_io, devfn_min); -} - -PCIBus *pci_bus_new(DeviceState *parent, const char *name, - MemoryRegion *address_space_mem, - MemoryRegion *address_space_io, - uint8_t devfn_min, const char *typename) -{ - PCIBus *bus; - - bus = PCI_BUS(qbus_create(typename, parent, name)); - pci_bus_init(bus, parent, address_space_mem, address_space_io, devfn_min); - return bus; -} - -void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, - void *irq_opaque, int nirq) -{ - bus->set_irq = set_irq; - bus->map_irq = map_irq; - bus->irq_opaque = irq_opaque; - bus->nirq = nirq; - bus->irq_count = g_malloc0(nirq * sizeof(bus->irq_count[0])); -} - -PCIBus *pci_register_bus(DeviceState *parent, const char *name, - pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, - void *irq_opaque, - MemoryRegion *address_space_mem, - MemoryRegion *address_space_io, - uint8_t devfn_min, int nirq, const char *typename) -{ - PCIBus *bus; - - bus = pci_bus_new(parent, name, address_space_mem, - address_space_io, devfn_min, typename); - pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq); - return bus; -} - -int pci_bus_num(PCIBus *s) -{ - return PCI_BUS_GET_CLASS(s)->bus_num(s); -} - -int pci_bus_numa_node(PCIBus *bus) -{ - return PCI_BUS_GET_CLASS(bus)->numa_node(bus); -} - -static int get_pci_config_device(QEMUFile *f, void *pv, size_t size) -{ - PCIDevice *s = container_of(pv, PCIDevice, config); - PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(s); - uint8_t *config; - int i; - - assert(size == pci_config_size(s)); - config = g_malloc(size); - - qemu_get_buffer(f, config, size); - for (i = 0; i < size; ++i) { - if ((config[i] ^ s->config[i]) & - s->cmask[i] & ~s->wmask[i] & ~s->w1cmask[i]) { - error_report("%s: Bad config data: i=0x%x read: %x device: %x " - "cmask: %x wmask: %x w1cmask:%x", __func__, - i, config[i], s->config[i], - s->cmask[i], s->wmask[i], s->w1cmask[i]); - g_free(config); - return -EINVAL; - } - } - memcpy(s->config, config, size); - - pci_update_mappings(s); - if (pc->is_bridge) { - PCIBridge *b = PCI_BRIDGE(s); - pci_bridge_update_mappings(b); - } - - memory_region_set_enabled(&s->bus_master_enable_region, - pci_get_word(s->config + PCI_COMMAND) - & PCI_COMMAND_MASTER); - - g_free(config); - return 0; -} - -/* just put buffer */ -static void put_pci_config_device(QEMUFile *f, void *pv, size_t size) -{ - const uint8_t **v = pv; - assert(size == pci_config_size(container_of(pv, PCIDevice, config))); - qemu_put_buffer(f, *v, size); -} - -static VMStateInfo vmstate_info_pci_config = { - .name = "pci config", - .get = get_pci_config_device, - .put = put_pci_config_device, -}; - -static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size) -{ - PCIDevice *s = container_of(pv, PCIDevice, irq_state); - uint32_t irq_state[PCI_NUM_PINS]; - int i; - for (i = 0; i < PCI_NUM_PINS; ++i) { - irq_state[i] = qemu_get_be32(f); - if (irq_state[i] != 0x1 && irq_state[i] != 0) { - fprintf(stderr, "irq state %d: must be 0 or 1.\n", - irq_state[i]); - return -EINVAL; - } - } - - for (i = 0; i < PCI_NUM_PINS; ++i) { - pci_set_irq_state(s, i, irq_state[i]); - } - - return 0; -} - -static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size) -{ - int i; - PCIDevice *s = container_of(pv, PCIDevice, irq_state); - - for (i = 0; i < PCI_NUM_PINS; ++i) { - qemu_put_be32(f, pci_irq_state(s, i)); - } -} - -static VMStateInfo vmstate_info_pci_irq_state = { - .name = "pci irq state", - .get = get_pci_irq_state, - .put = put_pci_irq_state, -}; - -const VMStateDescription vmstate_pci_device = { - .name = "PCIDevice", - .version_id = 2, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice), - VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0, - vmstate_info_pci_config, - PCI_CONFIG_SPACE_SIZE), - VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2, - vmstate_info_pci_irq_state, - PCI_NUM_PINS * sizeof(int32_t)), - VMSTATE_END_OF_LIST() - } -}; - -const VMStateDescription vmstate_pcie_device = { - .name = "PCIEDevice", - .version_id = 2, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice), - VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0, - vmstate_info_pci_config, - PCIE_CONFIG_SPACE_SIZE), - VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2, - vmstate_info_pci_irq_state, - PCI_NUM_PINS * sizeof(int32_t)), - VMSTATE_END_OF_LIST() - } -}; - -static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s) -{ - return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device; -} - -void pci_device_save(PCIDevice *s, QEMUFile *f) -{ - /* Clear interrupt status bit: it is implicit - * in irq_state which we are saving. - * This makes us compatible with old devices - * which never set or clear this bit. */ - s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; - vmstate_save_state(f, pci_get_vmstate(s), s, NULL); - /* Restore the interrupt status bit. */ - pci_update_irq_status(s); -} - -int pci_device_load(PCIDevice *s, QEMUFile *f) -{ - int ret; - ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id); - /* Restore the interrupt status bit. */ - pci_update_irq_status(s); - return ret; -} - -static void pci_set_default_subsystem_id(PCIDevice *pci_dev) -{ - pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, - pci_default_sub_vendor_id); - pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, - pci_default_sub_device_id); -} - -/* - * Parse [[:]:], return -1 on error if funcp == NULL - * [[:]:]., return -1 on error - */ -static int pci_parse_devaddr(const char *addr, int *domp, int *busp, - unsigned int *slotp, unsigned int *funcp) -{ - const char *p; - char *e; - unsigned long val; - unsigned long dom = 0, bus = 0; - unsigned int slot = 0; - unsigned int func = 0; - - p = addr; - val = strtoul(p, &e, 16); - if (e == p) - return -1; - if (*e == ':') { - bus = val; - p = e + 1; - val = strtoul(p, &e, 16); - if (e == p) - return -1; - if (*e == ':') { - dom = bus; - bus = val; - p = e + 1; - val = strtoul(p, &e, 16); - if (e == p) - return -1; - } - } - - slot = val; - - if (funcp != NULL) { - if (*e != '.') - return -1; - - p = e + 1; - val = strtoul(p, &e, 16); - if (e == p) - return -1; - - func = val; - } - - /* if funcp == NULL func is 0 */ - if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) - return -1; - - if (*e) - return -1; - - *domp = dom; - *busp = bus; - *slotp = slot; - if (funcp != NULL) - *funcp = func; - return 0; -} - -static PCIBus *pci_get_bus_devfn(int *devfnp, PCIBus *root, - const char *devaddr) -{ - int dom, bus; - unsigned slot; - - if (!root) { - fprintf(stderr, "No primary PCI bus\n"); - return NULL; - } - - assert(!root->parent_dev); - - if (!devaddr) { - *devfnp = -1; - return pci_find_bus_nr(root, 0); - } - - if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) { - return NULL; - } - - if (dom != 0) { - fprintf(stderr, "No support for non-zero PCI domains\n"); - return NULL; - } - - *devfnp = PCI_DEVFN(slot, 0); - return pci_find_bus_nr(root, bus); -} - -static void pci_init_cmask(PCIDevice *dev) -{ - pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff); - pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff); - dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST; - dev->cmask[PCI_REVISION_ID] = 0xff; - dev->cmask[PCI_CLASS_PROG] = 0xff; - pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff); - dev->cmask[PCI_HEADER_TYPE] = 0xff; - dev->cmask[PCI_CAPABILITY_LIST] = 0xff; -} - -static void pci_init_wmask(PCIDevice *dev) -{ - int config_size = pci_config_size(dev); - - dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff; - dev->wmask[PCI_INTERRUPT_LINE] = 0xff; - pci_set_word(dev->wmask + PCI_COMMAND, - PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | - PCI_COMMAND_INTX_DISABLE); - if (dev->cap_present & QEMU_PCI_CAP_SERR) { - pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, PCI_COMMAND_SERR); - } - - memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff, - config_size - PCI_CONFIG_HEADER_SIZE); -} - -static void pci_init_w1cmask(PCIDevice *dev) -{ - /* - * Note: It's okay to set w1cmask even for readonly bits as - * long as their value is hardwired to 0. - */ - pci_set_word(dev->w1cmask + PCI_STATUS, - PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT | - PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT | - PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY); -} - -static void pci_init_mask_bridge(PCIDevice *d) -{ - /* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and - PCI_SEC_LETENCY_TIMER */ - memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4); - - /* base and limit */ - d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff; - d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff; - pci_set_word(d->wmask + PCI_MEMORY_BASE, - PCI_MEMORY_RANGE_MASK & 0xffff); - pci_set_word(d->wmask + PCI_MEMORY_LIMIT, - PCI_MEMORY_RANGE_MASK & 0xffff); - pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE, - PCI_PREF_RANGE_MASK & 0xffff); - pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT, - PCI_PREF_RANGE_MASK & 0xffff); - - /* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */ - memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8); - - /* Supported memory and i/o types */ - d->config[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_16; - d->config[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_16; - pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_BASE, - PCI_PREF_RANGE_TYPE_64); - pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_LIMIT, - PCI_PREF_RANGE_TYPE_64); - - /* - * TODO: Bridges default to 10-bit VGA decoding but we currently only - * implement 16-bit decoding (no alias support). - */ - pci_set_word(d->wmask + PCI_BRIDGE_CONTROL, - PCI_BRIDGE_CTL_PARITY | - PCI_BRIDGE_CTL_SERR | - PCI_BRIDGE_CTL_ISA | - PCI_BRIDGE_CTL_VGA | - PCI_BRIDGE_CTL_VGA_16BIT | - PCI_BRIDGE_CTL_MASTER_ABORT | - PCI_BRIDGE_CTL_BUS_RESET | - PCI_BRIDGE_CTL_FAST_BACK | - PCI_BRIDGE_CTL_DISCARD | - PCI_BRIDGE_CTL_SEC_DISCARD | - PCI_BRIDGE_CTL_DISCARD_SERR); - /* Below does not do anything as we never set this bit, put here for - * completeness. */ - pci_set_word(d->w1cmask + PCI_BRIDGE_CONTROL, - PCI_BRIDGE_CTL_DISCARD_STATUS); - d->cmask[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_MASK; - d->cmask[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_MASK; - pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_BASE, - PCI_PREF_RANGE_TYPE_MASK); - pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_LIMIT, - PCI_PREF_RANGE_TYPE_MASK); -} - -static void pci_init_multifunction(PCIBus *bus, PCIDevice *dev, Error **errp) -{ - uint8_t slot = PCI_SLOT(dev->devfn); - uint8_t func; - - if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) { - dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION; - } - - /* - * multifunction bit is interpreted in two ways as follows. - * - all functions must set the bit to 1. - * Example: Intel X53 - * - function 0 must set the bit, but the rest function (> 0) - * is allowed to leave the bit to 0. - * Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10, - * - * So OS (at least Linux) checks the bit of only function 0, - * and doesn't see the bit of function > 0. - * - * The below check allows both interpretation. - */ - if (PCI_FUNC(dev->devfn)) { - PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)]; - if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) { - /* function 0 should set multifunction bit */ - error_setg(errp, "PCI: single function device can't be populated " - "in function %x.%x", slot, PCI_FUNC(dev->devfn)); - return; - } - return; - } - - if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) { - return; - } - /* function 0 indicates single function, so function > 0 must be NULL */ - for (func = 1; func < PCI_FUNC_MAX; ++func) { - if (bus->devices[PCI_DEVFN(slot, func)]) { - error_setg(errp, "PCI: %x.0 indicates single function, " - "but %x.%x is already populated.", - slot, slot, func); - return; - } - } -} - -static void pci_config_alloc(PCIDevice *pci_dev) -{ - int config_size = pci_config_size(pci_dev); - - pci_dev->config = g_malloc0(config_size); - pci_dev->cmask = g_malloc0(config_size); - pci_dev->wmask = g_malloc0(config_size); - pci_dev->w1cmask = g_malloc0(config_size); - pci_dev->used = g_malloc0(config_size); -} - -static void pci_config_free(PCIDevice *pci_dev) -{ - g_free(pci_dev->config); - g_free(pci_dev->cmask); - g_free(pci_dev->wmask); - g_free(pci_dev->w1cmask); - g_free(pci_dev->used); -} - -static void do_pci_unregister_device(PCIDevice *pci_dev) -{ - pci_dev->bus->devices[pci_dev->devfn] = NULL; - pci_config_free(pci_dev); - - address_space_destroy(&pci_dev->bus_master_as); -} - -/* -1 for devfn means auto assign */ -static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, - const char *name, int devfn, - Error **errp) -{ - PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); - PCIConfigReadFunc *config_read = pc->config_read; - PCIConfigWriteFunc *config_write = pc->config_write; - Error *local_err = NULL; - AddressSpace *dma_as; - DeviceState *dev = DEVICE(pci_dev); - - pci_dev->bus = bus; - /* Only pci bridges can be attached to extra PCI root buses */ - if (pci_bus_is_root(bus) && bus->parent_dev && !pc->is_bridge) { - error_setg(errp, - "PCI: Only PCI/PCIe bridges can be plugged into %s", - bus->parent_dev->name); - return NULL; - } - - if (devfn < 0) { - for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices); - devfn += PCI_FUNC_MAX) { - if (!bus->devices[devfn]) - goto found; - } - error_setg(errp, "PCI: no slot/function available for %s, all in use", - name); - return NULL; - found: ; - } else if (bus->devices[devfn]) { - error_setg(errp, "PCI: slot %d function %d not available for %s," - " in use by %s", - PCI_SLOT(devfn), PCI_FUNC(devfn), name, - bus->devices[devfn]->name); - return NULL; - } else if (dev->hotplugged && - pci_get_function_0(pci_dev)) { - error_setg(errp, "PCI: slot %d function 0 already ocuppied by %s," - " new func %s cannot be exposed to guest.", - PCI_SLOT(devfn), - bus->devices[PCI_DEVFN(PCI_SLOT(devfn), 0)]->name, - name); - - return NULL; - } - - pci_dev->devfn = devfn; - dma_as = pci_device_iommu_address_space(pci_dev); - - memory_region_init_alias(&pci_dev->bus_master_enable_region, - OBJECT(pci_dev), "bus master", - dma_as->root, 0, memory_region_size(dma_as->root)); - memory_region_set_enabled(&pci_dev->bus_master_enable_region, false); - address_space_init(&pci_dev->bus_master_as, &pci_dev->bus_master_enable_region, - name); - - pstrcpy(pci_dev->name, sizeof(pci_dev->name), name); - pci_dev->irq_state = 0; - pci_config_alloc(pci_dev); - - pci_config_set_vendor_id(pci_dev->config, pc->vendor_id); - pci_config_set_device_id(pci_dev->config, pc->device_id); - pci_config_set_revision(pci_dev->config, pc->revision); - pci_config_set_class(pci_dev->config, pc->class_id); - - if (!pc->is_bridge) { - if (pc->subsystem_vendor_id || pc->subsystem_id) { - pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, - pc->subsystem_vendor_id); - pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, - pc->subsystem_id); - } else { - pci_set_default_subsystem_id(pci_dev); - } - } else { - /* subsystem_vendor_id/subsystem_id are only for header type 0 */ - assert(!pc->subsystem_vendor_id); - assert(!pc->subsystem_id); - } - pci_init_cmask(pci_dev); - pci_init_wmask(pci_dev); - pci_init_w1cmask(pci_dev); - if (pc->is_bridge) { - pci_init_mask_bridge(pci_dev); - } - pci_init_multifunction(bus, pci_dev, &local_err); - if (local_err) { - error_propagate(errp, local_err); - do_pci_unregister_device(pci_dev); - return NULL; - } - - if (!config_read) - config_read = pci_default_read_config; - if (!config_write) - config_write = pci_default_write_config; - pci_dev->config_read = config_read; - pci_dev->config_write = config_write; - bus->devices[devfn] = pci_dev; - pci_dev->version_id = 2; /* Current pci device vmstate version */ - return pci_dev; -} - -static void pci_unregister_io_regions(PCIDevice *pci_dev) -{ - PCIIORegion *r; - int i; - - for(i = 0; i < PCI_NUM_REGIONS; i++) { - r = &pci_dev->io_regions[i]; - if (!r->size || r->addr == PCI_BAR_UNMAPPED) - continue; - memory_region_del_subregion(r->address_space, r->memory); - } - - pci_unregister_vga(pci_dev); -} - -static void pci_qdev_unrealize(DeviceState *dev, Error **errp) -{ - PCIDevice *pci_dev = PCI_DEVICE(dev); - PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); - - pci_unregister_io_regions(pci_dev); - pci_del_option_rom(pci_dev); - - if (pc->exit) { - pc->exit(pci_dev); - } - - do_pci_unregister_device(pci_dev); -} - -void pci_register_bar(PCIDevice *pci_dev, int region_num, - uint8_t type, MemoryRegion *memory) -{ - PCIIORegion *r; - uint32_t addr; - uint64_t wmask; - pcibus_t size = memory_region_size(memory); - - assert(region_num >= 0); - assert(region_num < PCI_NUM_REGIONS); - if (size & (size-1)) { - fprintf(stderr, "ERROR: PCI region size must be pow2 " - "type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size); - exit(1); - } - - r = &pci_dev->io_regions[region_num]; - r->addr = PCI_BAR_UNMAPPED; - r->size = size; - r->type = type; - r->memory = NULL; - - wmask = ~(size - 1); - addr = pci_bar(pci_dev, region_num); - if (region_num == PCI_ROM_SLOT) { - /* ROM enable bit is writable */ - wmask |= PCI_ROM_ADDRESS_ENABLE; - } - pci_set_long(pci_dev->config + addr, type); - if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) && - r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { - pci_set_quad(pci_dev->wmask + addr, wmask); - pci_set_quad(pci_dev->cmask + addr, ~0ULL); - } else { - pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); - pci_set_long(pci_dev->cmask + addr, 0xffffffff); - } - pci_dev->io_regions[region_num].memory = memory; - pci_dev->io_regions[region_num].address_space - = type & PCI_BASE_ADDRESS_SPACE_IO - ? pci_dev->bus->address_space_io - : pci_dev->bus->address_space_mem; -} - -static void pci_update_vga(PCIDevice *pci_dev) -{ - uint16_t cmd; - - if (!pci_dev->has_vga) { - return; - } - - cmd = pci_get_word(pci_dev->config + PCI_COMMAND); - - memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_MEM], - cmd & PCI_COMMAND_MEMORY); - memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO], - cmd & PCI_COMMAND_IO); - memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI], - cmd & PCI_COMMAND_IO); -} - -void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem, - MemoryRegion *io_lo, MemoryRegion *io_hi) -{ - assert(!pci_dev->has_vga); - - assert(memory_region_size(mem) == QEMU_PCI_VGA_MEM_SIZE); - pci_dev->vga_regions[QEMU_PCI_VGA_MEM] = mem; - memory_region_add_subregion_overlap(pci_dev->bus->address_space_mem, - QEMU_PCI_VGA_MEM_BASE, mem, 1); - - assert(memory_region_size(io_lo) == QEMU_PCI_VGA_IO_LO_SIZE); - pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO] = io_lo; - memory_region_add_subregion_overlap(pci_dev->bus->address_space_io, - QEMU_PCI_VGA_IO_LO_BASE, io_lo, 1); - - assert(memory_region_size(io_hi) == QEMU_PCI_VGA_IO_HI_SIZE); - pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI] = io_hi; - memory_region_add_subregion_overlap(pci_dev->bus->address_space_io, - QEMU_PCI_VGA_IO_HI_BASE, io_hi, 1); - pci_dev->has_vga = true; - - pci_update_vga(pci_dev); -} - -void pci_unregister_vga(PCIDevice *pci_dev) -{ - if (!pci_dev->has_vga) { - return; - } - - memory_region_del_subregion(pci_dev->bus->address_space_mem, - pci_dev->vga_regions[QEMU_PCI_VGA_MEM]); - memory_region_del_subregion(pci_dev->bus->address_space_io, - pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO]); - memory_region_del_subregion(pci_dev->bus->address_space_io, - pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI]); - pci_dev->has_vga = false; -} - -pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num) -{ - return pci_dev->io_regions[region_num].addr; -} - -static pcibus_t pci_bar_address(PCIDevice *d, - int reg, uint8_t type, pcibus_t size) -{ - pcibus_t new_addr, last_addr; - int bar = pci_bar(d, reg); - uint16_t cmd = pci_get_word(d->config + PCI_COMMAND); - Object *machine = qdev_get_machine(); - ObjectClass *oc = object_get_class(machine); - MachineClass *mc = MACHINE_CLASS(oc); - bool allow_0_address = mc->pci_allow_0_address; - - if (type & PCI_BASE_ADDRESS_SPACE_IO) { - if (!(cmd & PCI_COMMAND_IO)) { - return PCI_BAR_UNMAPPED; - } - new_addr = pci_get_long(d->config + bar) & ~(size - 1); - last_addr = new_addr + size - 1; - /* Check if 32 bit BAR wraps around explicitly. - * TODO: make priorities correct and remove this work around. - */ - if (last_addr <= new_addr || last_addr >= UINT32_MAX || - (!allow_0_address && new_addr == 0)) { - return PCI_BAR_UNMAPPED; - } - return new_addr; - } - - if (!(cmd & PCI_COMMAND_MEMORY)) { - return PCI_BAR_UNMAPPED; - } - if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) { - new_addr = pci_get_quad(d->config + bar); - } else { - new_addr = pci_get_long(d->config + bar); - } - /* the ROM slot has a specific enable bit */ - if (reg == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) { - return PCI_BAR_UNMAPPED; - } - new_addr &= ~(size - 1); - last_addr = new_addr + size - 1; - /* NOTE: we do not support wrapping */ - /* XXX: as we cannot support really dynamic - mappings, we handle specific values as invalid - mappings. */ - if (last_addr <= new_addr || last_addr == PCI_BAR_UNMAPPED || - (!allow_0_address && new_addr == 0)) { - return PCI_BAR_UNMAPPED; - } - - /* Now pcibus_t is 64bit. - * Check if 32 bit BAR wraps around explicitly. - * Without this, PC ide doesn't work well. - * TODO: remove this work around. - */ - if (!(type & PCI_BASE_ADDRESS_MEM_TYPE_64) && last_addr >= UINT32_MAX) { - return PCI_BAR_UNMAPPED; - } - - /* - * OS is allowed to set BAR beyond its addressable - * bits. For example, 32 bit OS can set 64bit bar - * to >4G. Check it. TODO: we might need to support - * it in the future for e.g. PAE. - */ - if (last_addr >= HWADDR_MAX) { - return PCI_BAR_UNMAPPED; - } - - return new_addr; -} - -static void pci_update_mappings(PCIDevice *d) -{ - PCIIORegion *r; - int i; - pcibus_t new_addr; - - for(i = 0; i < PCI_NUM_REGIONS; i++) { - r = &d->io_regions[i]; - - /* this region isn't registered */ - if (!r->size) - continue; - - new_addr = pci_bar_address(d, i, r->type, r->size); - - /* This bar isn't changed */ - if (new_addr == r->addr) - continue; - - /* now do the real mapping */ - if (r->addr != PCI_BAR_UNMAPPED) { - trace_pci_update_mappings_del(d, pci_bus_num(d->bus), - PCI_SLOT(d->devfn), - PCI_FUNC(d->devfn), - i, r->addr, r->size); - memory_region_del_subregion(r->address_space, r->memory); - } - r->addr = new_addr; - if (r->addr != PCI_BAR_UNMAPPED) { - trace_pci_update_mappings_add(d, pci_bus_num(d->bus), - PCI_SLOT(d->devfn), - PCI_FUNC(d->devfn), - i, r->addr, r->size); - memory_region_add_subregion_overlap(r->address_space, - r->addr, r->memory, 1); - } - } - - pci_update_vga(d); -} - -static inline int pci_irq_disabled(PCIDevice *d) -{ - return pci_get_word(d->config + PCI_COMMAND) & PCI_COMMAND_INTX_DISABLE; -} - -/* Called after interrupt disabled field update in config space, - * assert/deassert interrupts if necessary. - * Gets original interrupt disable bit value (before update). */ -static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled) -{ - int i, disabled = pci_irq_disabled(d); - if (disabled == was_irq_disabled) - return; - for (i = 0; i < PCI_NUM_PINS; ++i) { - int state = pci_irq_state(d, i); - pci_change_irq_level(d, i, disabled ? -state : state); - } -} - -uint32_t pci_default_read_config(PCIDevice *d, - uint32_t address, int len) -{ - uint32_t val = 0; - - memcpy(&val, d->config + address, len); - return le32_to_cpu(val); -} - -void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val_in, int l) -{ - int i, was_irq_disabled = pci_irq_disabled(d); - uint32_t val = val_in; - - for (i = 0; i < l; val >>= 8, ++i) { - uint8_t wmask = d->wmask[addr + i]; - uint8_t w1cmask = d->w1cmask[addr + i]; - assert(!(wmask & w1cmask)); - d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask); - d->config[addr + i] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */ - } - if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) || - ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) || - ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) || - range_covers_byte(addr, l, PCI_COMMAND)) - pci_update_mappings(d); - - if (range_covers_byte(addr, l, PCI_COMMAND)) { - pci_update_irq_disabled(d, was_irq_disabled); - memory_region_set_enabled(&d->bus_master_enable_region, - pci_get_word(d->config + PCI_COMMAND) - & PCI_COMMAND_MASTER); - } - - msi_write_config(d, addr, val_in, l); - msix_write_config(d, addr, val_in, l); -} - -/***********************************************************/ -/* generic PCI irq support */ - -/* 0 <= irq_num <= 3. level must be 0 or 1 */ -static void pci_irq_handler(void *opaque, int irq_num, int level) -{ - PCIDevice *pci_dev = opaque; - int change; - - change = level - pci_irq_state(pci_dev, irq_num); - if (!change) - return; - - pci_set_irq_state(pci_dev, irq_num, level); - pci_update_irq_status(pci_dev); - if (pci_irq_disabled(pci_dev)) - return; - pci_change_irq_level(pci_dev, irq_num, change); -} - -static inline int pci_intx(PCIDevice *pci_dev) -{ - return pci_get_byte(pci_dev->config + PCI_INTERRUPT_PIN) - 1; -} - -qemu_irq pci_allocate_irq(PCIDevice *pci_dev) -{ - int intx = pci_intx(pci_dev); - - return qemu_allocate_irq(pci_irq_handler, pci_dev, intx); -} - -void pci_set_irq(PCIDevice *pci_dev, int level) -{ - int intx = pci_intx(pci_dev); - pci_irq_handler(pci_dev, intx, level); -} - -/* Special hooks used by device assignment */ -void pci_bus_set_route_irq_fn(PCIBus *bus, pci_route_irq_fn route_intx_to_irq) -{ - assert(pci_bus_is_root(bus)); - bus->route_intx_to_irq = route_intx_to_irq; -} - -PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin) -{ - PCIBus *bus; - - do { - bus = dev->bus; - pin = bus->map_irq(dev, pin); - dev = bus->parent_dev; - } while (dev); - - if (!bus->route_intx_to_irq) { - error_report("PCI: Bug - unimplemented PCI INTx routing (%s)", - object_get_typename(OBJECT(bus->qbus.parent))); - return (PCIINTxRoute) { PCI_INTX_DISABLED, -1 }; - } - - return bus->route_intx_to_irq(bus->irq_opaque, pin); -} - -bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new) -{ - return old->mode != new->mode || old->irq != new->irq; -} - -void pci_bus_fire_intx_routing_notifier(PCIBus *bus) -{ - PCIDevice *dev; - PCIBus *sec; - int i; - - for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { - dev = bus->devices[i]; - if (dev && dev->intx_routing_notifier) { - dev->intx_routing_notifier(dev); - } - } - - QLIST_FOREACH(sec, &bus->child, sibling) { - pci_bus_fire_intx_routing_notifier(sec); - } -} - -void pci_device_set_intx_routing_notifier(PCIDevice *dev, - PCIINTxRoutingNotifier notifier) -{ - dev->intx_routing_notifier = notifier; -} - -/* - * PCI-to-PCI bridge specification - * 9.1: Interrupt routing. Table 9-1 - * - * the PCI Express Base Specification, Revision 2.1 - * 2.2.8.1: INTx interrutp signaling - Rules - * the Implementation Note - * Table 2-20 - */ -/* - * 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD - * 0-origin unlike PCI interrupt pin register. - */ -int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin) -{ - return (pin + PCI_SLOT(pci_dev->devfn)) % PCI_NUM_PINS; -} - -/***********************************************************/ -/* monitor info on PCI */ - -typedef struct { - uint16_t class; - const char *desc; - const char *fw_name; - uint16_t fw_ign_bits; -} pci_class_desc; - -static const pci_class_desc pci_class_descriptions[] = -{ - { 0x0001, "VGA controller", "display"}, - { 0x0100, "SCSI controller", "scsi"}, - { 0x0101, "IDE controller", "ide"}, - { 0x0102, "Floppy controller", "fdc"}, - { 0x0103, "IPI controller", "ipi"}, - { 0x0104, "RAID controller", "raid"}, - { 0x0106, "SATA controller"}, - { 0x0107, "SAS controller"}, - { 0x0180, "Storage controller"}, - { 0x0200, "Ethernet controller", "ethernet"}, - { 0x0201, "Token Ring controller", "token-ring"}, - { 0x0202, "FDDI controller", "fddi"}, - { 0x0203, "ATM controller", "atm"}, - { 0x0280, "Network controller"}, - { 0x0300, "VGA controller", "display", 0x00ff}, - { 0x0301, "XGA controller"}, - { 0x0302, "3D controller"}, - { 0x0380, "Display controller"}, - { 0x0400, "Video controller", "video"}, - { 0x0401, "Audio controller", "sound"}, - { 0x0402, "Phone"}, - { 0x0403, "Audio controller", "sound"}, - { 0x0480, "Multimedia controller"}, - { 0x0500, "RAM controller", "memory"}, - { 0x0501, "Flash controller", "flash"}, - { 0x0580, "Memory controller"}, - { 0x0600, "Host bridge", "host"}, - { 0x0601, "ISA bridge", "isa"}, - { 0x0602, "EISA bridge", "eisa"}, - { 0x0603, "MC bridge", "mca"}, - { 0x0604, "PCI bridge", "pci-bridge"}, - { 0x0605, "PCMCIA bridge", "pcmcia"}, - { 0x0606, "NUBUS bridge", "nubus"}, - { 0x0607, "CARDBUS bridge", "cardbus"}, - { 0x0608, "RACEWAY bridge"}, - { 0x0680, "Bridge"}, - { 0x0700, "Serial port", "serial"}, - { 0x0701, "Parallel port", "parallel"}, - { 0x0800, "Interrupt controller", "interrupt-controller"}, - { 0x0801, "DMA controller", "dma-controller"}, - { 0x0802, "Timer", "timer"}, - { 0x0803, "RTC", "rtc"}, - { 0x0900, "Keyboard", "keyboard"}, - { 0x0901, "Pen", "pen"}, - { 0x0902, "Mouse", "mouse"}, - { 0x0A00, "Dock station", "dock", 0x00ff}, - { 0x0B00, "i386 cpu", "cpu", 0x00ff}, - { 0x0c00, "Fireware contorller", "fireware"}, - { 0x0c01, "Access bus controller", "access-bus"}, - { 0x0c02, "SSA controller", "ssa"}, - { 0x0c03, "USB controller", "usb"}, - { 0x0c04, "Fibre channel controller", "fibre-channel"}, - { 0x0c05, "SMBus"}, - { 0, NULL} -}; - -static void pci_for_each_device_under_bus(PCIBus *bus, - void (*fn)(PCIBus *b, PCIDevice *d, - void *opaque), - void *opaque) -{ - PCIDevice *d; - int devfn; - - for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { - d = bus->devices[devfn]; - if (d) { - fn(bus, d, opaque); - } - } -} - -void pci_for_each_device(PCIBus *bus, int bus_num, - void (*fn)(PCIBus *b, PCIDevice *d, void *opaque), - void *opaque) -{ - bus = pci_find_bus_nr(bus, bus_num); - - if (bus) { - pci_for_each_device_under_bus(bus, fn, opaque); - } -} - -static const pci_class_desc *get_class_desc(int class) -{ - const pci_class_desc *desc; - - desc = pci_class_descriptions; - while (desc->desc && class != desc->class) { - desc++; - } - - return desc; -} - -static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num); - -static PciMemoryRegionList *qmp_query_pci_regions(const PCIDevice *dev) -{ - PciMemoryRegionList *head = NULL, *cur_item = NULL; - int i; - - for (i = 0; i < PCI_NUM_REGIONS; i++) { - const PCIIORegion *r = &dev->io_regions[i]; - PciMemoryRegionList *region; - - if (!r->size) { - continue; - } - - region = g_malloc0(sizeof(*region)); - region->value = g_malloc0(sizeof(*region->value)); - - if (r->type & PCI_BASE_ADDRESS_SPACE_IO) { - region->value->type = g_strdup("io"); - } else { - region->value->type = g_strdup("memory"); - region->value->has_prefetch = true; - region->value->prefetch = !!(r->type & PCI_BASE_ADDRESS_MEM_PREFETCH); - region->value->has_mem_type_64 = true; - region->value->mem_type_64 = !!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64); - } - - region->value->bar = i; - region->value->address = r->addr; - region->value->size = r->size; - - /* XXX: waiting for the qapi to support GSList */ - if (!cur_item) { - head = cur_item = region; - } else { - cur_item->next = region; - cur_item = region; - } - } - - return head; -} - -static PciBridgeInfo *qmp_query_pci_bridge(PCIDevice *dev, PCIBus *bus, - int bus_num) -{ - PciBridgeInfo *info; - PciMemoryRange *range; - - info = g_new0(PciBridgeInfo, 1); - - info->bus = g_new0(PciBusInfo, 1); - info->bus->number = dev->config[PCI_PRIMARY_BUS]; - info->bus->secondary = dev->config[PCI_SECONDARY_BUS]; - info->bus->subordinate = dev->config[PCI_SUBORDINATE_BUS]; - - range = info->bus->io_range = g_new0(PciMemoryRange, 1); - range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO); - range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO); - - range = info->bus->memory_range = g_new0(PciMemoryRange, 1); - range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); - range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); - - range = info->bus->prefetchable_range = g_new0(PciMemoryRange, 1); - range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); - range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); - - if (dev->config[PCI_SECONDARY_BUS] != 0) { - PCIBus *child_bus = pci_find_bus_nr(bus, dev->config[PCI_SECONDARY_BUS]); - if (child_bus) { - info->has_devices = true; - info->devices = qmp_query_pci_devices(child_bus, dev->config[PCI_SECONDARY_BUS]); - } - } - - return info; -} - -static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus, - int bus_num) -{ - const pci_class_desc *desc; - PciDeviceInfo *info; - uint8_t type; - int class; - - info = g_new0(PciDeviceInfo, 1); - info->bus = bus_num; - info->slot = PCI_SLOT(dev->devfn); - info->function = PCI_FUNC(dev->devfn); - - info->class_info = g_new0(PciDeviceClass, 1); - class = pci_get_word(dev->config + PCI_CLASS_DEVICE); - info->class_info->q_class = class; - desc = get_class_desc(class); - if (desc->desc) { - info->class_info->has_desc = true; - info->class_info->desc = g_strdup(desc->desc); - } - - info->id = g_new0(PciDeviceId, 1); - info->id->vendor = pci_get_word(dev->config + PCI_VENDOR_ID); - info->id->device = pci_get_word(dev->config + PCI_DEVICE_ID); - info->regions = qmp_query_pci_regions(dev); - info->qdev_id = g_strdup(dev->qdev.id ? dev->qdev.id : ""); - - if (dev->config[PCI_INTERRUPT_PIN] != 0) { - info->has_irq = true; - info->irq = dev->config[PCI_INTERRUPT_LINE]; - } - - type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; - if (type == PCI_HEADER_TYPE_BRIDGE) { - info->has_pci_bridge = true; - info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num); - } - - return info; -} - -static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num) -{ - PciDeviceInfoList *info, *head = NULL, *cur_item = NULL; - PCIDevice *dev; - int devfn; - - for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { - dev = bus->devices[devfn]; - if (dev) { - info = g_malloc0(sizeof(*info)); - info->value = qmp_query_pci_device(dev, bus, bus_num); - - /* XXX: waiting for the qapi to support GSList */ - if (!cur_item) { - head = cur_item = info; - } else { - cur_item->next = info; - cur_item = info; - } - } - } - - return head; -} - -static PciInfo *qmp_query_pci_bus(PCIBus *bus, int bus_num) -{ - PciInfo *info = NULL; - - bus = pci_find_bus_nr(bus, bus_num); - if (bus) { - info = g_malloc0(sizeof(*info)); - info->bus = bus_num; - info->devices = qmp_query_pci_devices(bus, bus_num); - } - - return info; -} - -PciInfoList *qmp_query_pci(Error **errp) -{ - PciInfoList *info, *head = NULL, *cur_item = NULL; - PCIHostState *host_bridge; - - QLIST_FOREACH(host_bridge, &pci_host_bridges, next) { - info = g_malloc0(sizeof(*info)); - info->value = qmp_query_pci_bus(host_bridge->bus, - pci_bus_num(host_bridge->bus)); - - /* XXX: waiting for the qapi to support GSList */ - if (!cur_item) { - head = cur_item = info; - } else { - cur_item->next = info; - cur_item = info; - } - } - - return head; -} - -static const char * const pci_nic_models[] = { - "ne2k_pci", - "i82551", - "i82557b", - "i82559er", - "rtl8139", - "e1000", - "pcnet", - "virtio", - NULL -}; - -static const char * const pci_nic_names[] = { - "ne2k_pci", - "i82551", - "i82557b", - "i82559er", - "rtl8139", - "e1000", - "pcnet", - "virtio-net-pci", - NULL -}; - -/* Initialize a PCI NIC. */ -PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, - const char *default_model, - const char *default_devaddr) -{ - const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr; - Error *err = NULL; - PCIBus *bus; - PCIDevice *pci_dev; - DeviceState *dev; - int devfn; - int i; - - if (qemu_show_nic_models(nd->model, pci_nic_models)) { - exit(0); - } - - i = qemu_find_nic_model(nd, pci_nic_models, default_model); - if (i < 0) { - exit(1); - } - - bus = pci_get_bus_devfn(&devfn, rootbus, devaddr); - if (!bus) { - error_report("Invalid PCI device address %s for device %s", - devaddr, pci_nic_names[i]); - exit(1); - } - - pci_dev = pci_create(bus, devfn, pci_nic_names[i]); - dev = &pci_dev->qdev; - qdev_set_nic_properties(dev, nd); - - object_property_set_bool(OBJECT(dev), true, "realized", &err); - if (err) { - error_report_err(err); - object_unparent(OBJECT(dev)); - exit(1); - } - - return pci_dev; -} - -PCIDevice *pci_vga_init(PCIBus *bus) -{ - switch (vga_interface_type) { - case VGA_CIRRUS: - return pci_create_simple(bus, -1, "cirrus-vga"); - case VGA_QXL: - return pci_create_simple(bus, -1, "qxl-vga"); - case VGA_STD: - return pci_create_simple(bus, -1, "VGA"); - case VGA_VMWARE: - return pci_create_simple(bus, -1, "vmware-svga"); - case VGA_VIRTIO: - return pci_create_simple(bus, -1, "virtio-vga"); - case VGA_NONE: - default: /* Other non-PCI types. Checking for unsupported types is already - done in vl.c. */ - return NULL; - } -} - -/* Whether a given bus number is in range of the secondary - * bus of the given bridge device. */ -static bool pci_secondary_bus_in_range(PCIDevice *dev, int bus_num) -{ - return !(pci_get_word(dev->config + PCI_BRIDGE_CONTROL) & - PCI_BRIDGE_CTL_BUS_RESET) /* Don't walk the bus if it's reset. */ && - dev->config[PCI_SECONDARY_BUS] <= bus_num && - bus_num <= dev->config[PCI_SUBORDINATE_BUS]; -} - -/* Whether a given bus number is in a range of a root bus */ -static bool pci_root_bus_in_range(PCIBus *bus, int bus_num) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { - PCIDevice *dev = bus->devices[i]; - - if (dev && PCI_DEVICE_GET_CLASS(dev)->is_bridge) { - if (pci_secondary_bus_in_range(dev, bus_num)) { - return true; - } - } - } - - return false; -} - -static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num) -{ - PCIBus *sec; - - if (!bus) { - return NULL; - } - - if (pci_bus_num(bus) == bus_num) { - return bus; - } - - /* Consider all bus numbers in range for the host pci bridge. */ - if (!pci_bus_is_root(bus) && - !pci_secondary_bus_in_range(bus->parent_dev, bus_num)) { - return NULL; - } - - /* try child bus */ - for (; bus; bus = sec) { - QLIST_FOREACH(sec, &bus->child, sibling) { - if (pci_bus_num(sec) == bus_num) { - return sec; - } - /* PXB buses assumed to be children of bus 0 */ - if (pci_bus_is_root(sec)) { - if (pci_root_bus_in_range(sec, bus_num)) { - break; - } - } else { - if (pci_secondary_bus_in_range(sec->parent_dev, bus_num)) { - break; - } - } - } - } - - return NULL; -} - -void pci_for_each_bus_depth_first(PCIBus *bus, - void *(*begin)(PCIBus *bus, void *parent_state), - void (*end)(PCIBus *bus, void *state), - void *parent_state) -{ - PCIBus *sec; - void *state; - - if (!bus) { - return; - } - - if (begin) { - state = begin(bus, parent_state); - } else { - state = parent_state; - } - - QLIST_FOREACH(sec, &bus->child, sibling) { - pci_for_each_bus_depth_first(sec, begin, end, state); - } - - if (end) { - end(bus, state); - } -} - - -PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn) -{ - bus = pci_find_bus_nr(bus, bus_num); - - if (!bus) - return NULL; - - return bus->devices[devfn]; -} - -static void pci_qdev_realize(DeviceState *qdev, Error **errp) -{ - PCIDevice *pci_dev = (PCIDevice *)qdev; - PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); - Error *local_err = NULL; - PCIBus *bus; - bool is_default_rom; - - /* initialize cap_present for pci_is_express() and pci_config_size() */ - if (pc->is_express) { - pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; - } - - bus = PCI_BUS(qdev_get_parent_bus(qdev)); - pci_dev = do_pci_register_device(pci_dev, bus, - object_get_typename(OBJECT(qdev)), - pci_dev->devfn, errp); - if (pci_dev == NULL) - return; - - if (pc->realize) { - pc->realize(pci_dev, &local_err); - if (local_err) { - error_propagate(errp, local_err); - do_pci_unregister_device(pci_dev); - return; - } - } - - /* rom loading */ - is_default_rom = false; - if (pci_dev->romfile == NULL && pc->romfile != NULL) { - pci_dev->romfile = g_strdup(pc->romfile); - is_default_rom = true; - } - - pci_add_option_rom(pci_dev, is_default_rom, &local_err); - if (local_err) { - error_propagate(errp, local_err); - pci_qdev_unrealize(DEVICE(pci_dev), NULL); - return; - } -} - -static void pci_default_realize(PCIDevice *dev, Error **errp) -{ - PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); - - if (pc->init) { - if (pc->init(dev) < 0) { - error_setg(errp, "Device initialization failed"); - return; - } - } -} - -PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction, - const char *name) -{ - DeviceState *dev; - - dev = qdev_create(&bus->qbus, name); - qdev_prop_set_int32(dev, "addr", devfn); - qdev_prop_set_bit(dev, "multifunction", multifunction); - return PCI_DEVICE(dev); -} - -PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn, - bool multifunction, - const char *name) -{ - PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name); - qdev_init_nofail(&dev->qdev); - return dev; -} - -PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name) -{ - return pci_create_multifunction(bus, devfn, false, name); -} - -PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name) -{ - return pci_create_simple_multifunction(bus, devfn, false, name); -} - -static uint8_t pci_find_space(PCIDevice *pdev, uint8_t size) -{ - int offset = PCI_CONFIG_HEADER_SIZE; - int i; - for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i) { - if (pdev->used[i]) - offset = i + 1; - else if (i - offset + 1 == size) - return offset; - } - return 0; -} - -static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id, - uint8_t *prev_p) -{ - uint8_t next, prev; - - if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST)) - return 0; - - for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]); - prev = next + PCI_CAP_LIST_NEXT) - if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id) - break; - - if (prev_p) - *prev_p = prev; - return next; -} - -static uint8_t pci_find_capability_at_offset(PCIDevice *pdev, uint8_t offset) -{ - uint8_t next, prev, found = 0; - - if (!(pdev->used[offset])) { - return 0; - } - - assert(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST); - - for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]); - prev = next + PCI_CAP_LIST_NEXT) { - if (next <= offset && next > found) { - found = next; - } - } - return found; -} - -/* Patch the PCI vendor and device ids in a PCI rom image if necessary. - This is needed for an option rom which is used for more than one device. */ -static void pci_patch_ids(PCIDevice *pdev, uint8_t *ptr, int size) -{ - uint16_t vendor_id; - uint16_t device_id; - uint16_t rom_vendor_id; - uint16_t rom_device_id; - uint16_t rom_magic; - uint16_t pcir_offset; - uint8_t checksum; - - /* Words in rom data are little endian (like in PCI configuration), - so they can be read / written with pci_get_word / pci_set_word. */ - - /* Only a valid rom will be patched. */ - rom_magic = pci_get_word(ptr); - if (rom_magic != 0xaa55) { - PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic); - return; - } - pcir_offset = pci_get_word(ptr + 0x18); - if (pcir_offset + 8 >= size || memcmp(ptr + pcir_offset, "PCIR", 4)) { - PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset); - return; - } - - vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID); - device_id = pci_get_word(pdev->config + PCI_DEVICE_ID); - rom_vendor_id = pci_get_word(ptr + pcir_offset + 4); - rom_device_id = pci_get_word(ptr + pcir_offset + 6); - - PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev->romfile, - vendor_id, device_id, rom_vendor_id, rom_device_id); - - checksum = ptr[6]; - - if (vendor_id != rom_vendor_id) { - /* Patch vendor id and checksum (at offset 6 for etherboot roms). */ - checksum += (uint8_t)rom_vendor_id + (uint8_t)(rom_vendor_id >> 8); - checksum -= (uint8_t)vendor_id + (uint8_t)(vendor_id >> 8); - PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); - ptr[6] = checksum; - pci_set_word(ptr + pcir_offset + 4, vendor_id); - } - - if (device_id != rom_device_id) { - /* Patch device id and checksum (at offset 6 for etherboot roms). */ - checksum += (uint8_t)rom_device_id + (uint8_t)(rom_device_id >> 8); - checksum -= (uint8_t)device_id + (uint8_t)(device_id >> 8); - PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); - ptr[6] = checksum; - pci_set_word(ptr + pcir_offset + 6, device_id); - } -} - -/* Add an option rom for the device */ -static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom, - Error **errp) -{ - int size; - char *path; - void *ptr; - char name[32]; - const VMStateDescription *vmsd; - - if (!pdev->romfile) - return; - if (strlen(pdev->romfile) == 0) - return; - - if (!pdev->rom_bar) { - /* - * Load rom via fw_cfg instead of creating a rom bar, - * for 0.11 compatibility. - */ - int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE); - - /* - * Hot-plugged devices can't use the option ROM - * if the rom bar is disabled. - */ - if (DEVICE(pdev)->hotplugged) { - error_setg(errp, "Hot-plugged device without ROM bar" - " can't have an option ROM"); - return; - } - - if (class == 0x0300) { - rom_add_vga(pdev->romfile); - } else { - rom_add_option(pdev->romfile, -1); - } - return; - } - - path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile); - if (path == NULL) { - path = g_strdup(pdev->romfile); - } - - size = get_image_size(path); - if (size < 0) { - error_setg(errp, "failed to find romfile \"%s\"", pdev->romfile); - g_free(path); - return; - } else if (size == 0) { - error_setg(errp, "romfile \"%s\" is empty", pdev->romfile); - g_free(path); - return; - } - size = pow2ceil(size); - - vmsd = qdev_get_vmsd(DEVICE(pdev)); - - if (vmsd) { - snprintf(name, sizeof(name), "%s.rom", vmsd->name); - } else { - snprintf(name, sizeof(name), "%s.rom", object_get_typename(OBJECT(pdev))); - } - pdev->has_rom = true; - memory_region_init_ram(&pdev->rom, OBJECT(pdev), name, size, &error_fatal); - vmstate_register_ram(&pdev->rom, &pdev->qdev); - ptr = memory_region_get_ram_ptr(&pdev->rom); - load_image(path, ptr); - g_free(path); - - if (is_default_rom) { - /* Only the default rom images will be patched (if needed). */ - pci_patch_ids(pdev, ptr, size); - } - - pci_register_bar(pdev, PCI_ROM_SLOT, 0, &pdev->rom); -} - -static void pci_del_option_rom(PCIDevice *pdev) -{ - if (!pdev->has_rom) - return; - - vmstate_unregister_ram(&pdev->rom, &pdev->qdev); - pdev->has_rom = false; -} - -/* - * if offset = 0, - * Find and reserve space and add capability to the linked list - * in pci config space - */ -int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, - uint8_t offset, uint8_t size) -{ - int ret; - Error *local_err = NULL; - - ret = pci_add_capability2(pdev, cap_id, offset, size, &local_err); - if (local_err) { - assert(ret < 0); - error_report_err(local_err); - } else { - /* success implies a positive offset in config space */ - assert(ret > 0); - } - return ret; -} - -int pci_add_capability2(PCIDevice *pdev, uint8_t cap_id, - uint8_t offset, uint8_t size, - Error **errp) -{ - uint8_t *config; - int i, overlapping_cap; - - if (!offset) { - offset = pci_find_space(pdev, size); - if (!offset) { - error_setg(errp, "out of PCI config space"); - return -ENOSPC; - } - } else { - /* Verify that capabilities don't overlap. Note: device assignment - * depends on this check to verify that the device is not broken. - * Should never trigger for emulated devices, but it's helpful - * for debugging these. */ - for (i = offset; i < offset + size; i++) { - overlapping_cap = pci_find_capability_at_offset(pdev, i); - if (overlapping_cap) { - error_setg(errp, "%s:%02x:%02x.%x " - "Attempt to add PCI capability %x at offset " - "%x overlaps existing capability %x at offset %x", - pci_root_bus_path(pdev), pci_bus_num(pdev->bus), - PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), - cap_id, offset, overlapping_cap, i); - return -EINVAL; - } - } - } - - config = pdev->config + offset; - config[PCI_CAP_LIST_ID] = cap_id; - config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST]; - pdev->config[PCI_CAPABILITY_LIST] = offset; - pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST; - memset(pdev->used + offset, 0xFF, QEMU_ALIGN_UP(size, 4)); - /* Make capability read-only by default */ - memset(pdev->wmask + offset, 0, size); - /* Check capability by default */ - memset(pdev->cmask + offset, 0xFF, size); - return offset; -} - -/* Unlink capability from the pci config space. */ -void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size) -{ - uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev); - if (!offset) - return; - pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT]; - /* Make capability writable again */ - memset(pdev->wmask + offset, 0xff, size); - memset(pdev->w1cmask + offset, 0, size); - /* Clear cmask as device-specific registers can't be checked */ - memset(pdev->cmask + offset, 0, size); - memset(pdev->used + offset, 0, QEMU_ALIGN_UP(size, 4)); - - if (!pdev->config[PCI_CAPABILITY_LIST]) - pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST; -} - -uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id) -{ - return pci_find_capability_list(pdev, cap_id, NULL); -} - -static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent) -{ - PCIDevice *d = (PCIDevice *)dev; - const pci_class_desc *desc; - char ctxt[64]; - PCIIORegion *r; - int i, class; - - class = pci_get_word(d->config + PCI_CLASS_DEVICE); - desc = pci_class_descriptions; - while (desc->desc && class != desc->class) - desc++; - if (desc->desc) { - snprintf(ctxt, sizeof(ctxt), "%s", desc->desc); - } else { - snprintf(ctxt, sizeof(ctxt), "Class %04x", class); - } - - monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, " - "pci id %04x:%04x (sub %04x:%04x)\n", - indent, "", ctxt, pci_bus_num(d->bus), - PCI_SLOT(d->devfn), PCI_FUNC(d->devfn), - pci_get_word(d->config + PCI_VENDOR_ID), - pci_get_word(d->config + PCI_DEVICE_ID), - pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID), - pci_get_word(d->config + PCI_SUBSYSTEM_ID)); - for (i = 0; i < PCI_NUM_REGIONS; i++) { - r = &d->io_regions[i]; - if (!r->size) - continue; - monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS - " [0x%"FMT_PCIBUS"]\n", - indent, "", - i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem", - r->addr, r->addr + r->size - 1); - } -} - -static char *pci_dev_fw_name(DeviceState *dev, char *buf, int len) -{ - PCIDevice *d = (PCIDevice *)dev; - const char *name = NULL; - const pci_class_desc *desc = pci_class_descriptions; - int class = pci_get_word(d->config + PCI_CLASS_DEVICE); - - while (desc->desc && - (class & ~desc->fw_ign_bits) != - (desc->class & ~desc->fw_ign_bits)) { - desc++; - } - - if (desc->desc) { - name = desc->fw_name; - } - - if (name) { - pstrcpy(buf, len, name); - } else { - snprintf(buf, len, "pci%04x,%04x", - pci_get_word(d->config + PCI_VENDOR_ID), - pci_get_word(d->config + PCI_DEVICE_ID)); - } - - return buf; -} - -static char *pcibus_get_fw_dev_path(DeviceState *dev) -{ - PCIDevice *d = (PCIDevice *)dev; - char path[50], name[33]; - int off; - - off = snprintf(path, sizeof(path), "%s@%x", - pci_dev_fw_name(dev, name, sizeof name), - PCI_SLOT(d->devfn)); - if (PCI_FUNC(d->devfn)) - snprintf(path + off, sizeof(path) + off, ",%x", PCI_FUNC(d->devfn)); - return g_strdup(path); -} - -static char *pcibus_get_dev_path(DeviceState *dev) -{ - PCIDevice *d = container_of(dev, PCIDevice, qdev); - PCIDevice *t; - int slot_depth; - /* Path format: Domain:00:Slot.Function:Slot.Function....:Slot.Function. - * 00 is added here to make this format compatible with - * domain:Bus:Slot.Func for systems without nested PCI bridges. - * Slot.Function list specifies the slot and function numbers for all - * devices on the path from root to the specific device. */ - const char *root_bus_path; - int root_bus_len; - char slot[] = ":SS.F"; - int slot_len = sizeof slot - 1 /* For '\0' */; - int path_len; - char *path, *p; - int s; - - root_bus_path = pci_root_bus_path(d); - root_bus_len = strlen(root_bus_path); - - /* Calculate # of slots on path between device and root. */; - slot_depth = 0; - for (t = d; t; t = t->bus->parent_dev) { - ++slot_depth; - } - - path_len = root_bus_len + slot_len * slot_depth; - - /* Allocate memory, fill in the terminating null byte. */ - path = g_malloc(path_len + 1 /* For '\0' */); - path[path_len] = '\0'; - - memcpy(path, root_bus_path, root_bus_len); - - /* Fill in slot numbers. We walk up from device to root, so need to print - * them in the reverse order, last to first. */ - p = path + path_len; - for (t = d; t; t = t->bus->parent_dev) { - p -= slot_len; - s = snprintf(slot, sizeof slot, ":%02x.%x", - PCI_SLOT(t->devfn), PCI_FUNC(t->devfn)); - assert(s == slot_len); - memcpy(p, slot, slot_len); - } - - return path; -} - -static int pci_qdev_find_recursive(PCIBus *bus, - const char *id, PCIDevice **pdev) -{ - DeviceState *qdev = qdev_find_recursive(&bus->qbus, id); - if (!qdev) { - return -ENODEV; - } - - /* roughly check if given qdev is pci device */ - if (object_dynamic_cast(OBJECT(qdev), TYPE_PCI_DEVICE)) { - *pdev = PCI_DEVICE(qdev); - return 0; - } - return -EINVAL; -} - -int pci_qdev_find_device(const char *id, PCIDevice **pdev) -{ - PCIHostState *host_bridge; - int rc = -ENODEV; - - QLIST_FOREACH(host_bridge, &pci_host_bridges, next) { - int tmp = pci_qdev_find_recursive(host_bridge->bus, id, pdev); - if (!tmp) { - rc = 0; - break; - } - if (tmp != -ENODEV) { - rc = tmp; - } - } - - return rc; -} - -MemoryRegion *pci_address_space(PCIDevice *dev) -{ - return dev->bus->address_space_mem; -} - -MemoryRegion *pci_address_space_io(PCIDevice *dev) -{ - return dev->bus->address_space_io; -} - -static void pci_device_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *k = DEVICE_CLASS(klass); - PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); - - k->realize = pci_qdev_realize; - k->unrealize = pci_qdev_unrealize; - k->bus_type = TYPE_PCI_BUS; - k->props = pci_props; - pc->realize = pci_default_realize; -} - -AddressSpace *pci_device_iommu_address_space(PCIDevice *dev) -{ - PCIBus *bus = PCI_BUS(dev->bus); - PCIBus *iommu_bus = bus; - - while(iommu_bus && !iommu_bus->iommu_fn && iommu_bus->parent_dev) { - iommu_bus = PCI_BUS(iommu_bus->parent_dev->bus); - } - if (iommu_bus && iommu_bus->iommu_fn) { - return iommu_bus->iommu_fn(bus, iommu_bus->iommu_opaque, dev->devfn); - } - return &address_space_memory; -} - -void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque) -{ - bus->iommu_fn = fn; - bus->iommu_opaque = opaque; -} - -static void pci_dev_get_w64(PCIBus *b, PCIDevice *dev, void *opaque) -{ - Range *range = opaque; - PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); - uint16_t cmd = pci_get_word(dev->config + PCI_COMMAND); - int i; - - if (!(cmd & PCI_COMMAND_MEMORY)) { - return; - } - - if (pc->is_bridge) { - pcibus_t base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); - pcibus_t limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); - - base = MAX(base, 0x1ULL << 32); - - if (limit >= base) { - Range pref_range; - pref_range.begin = base; - pref_range.end = limit + 1; - range_extend(range, &pref_range); - } - } - for (i = 0; i < PCI_NUM_REGIONS; ++i) { - PCIIORegion *r = &dev->io_regions[i]; - Range region_range; - - if (!r->size || - (r->type & PCI_BASE_ADDRESS_SPACE_IO) || - !(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64)) { - continue; - } - region_range.begin = pci_bar_address(dev, i, r->type, r->size); - region_range.end = region_range.begin + r->size; - - if (region_range.begin == PCI_BAR_UNMAPPED) { - continue; - } - - region_range.begin = MAX(region_range.begin, 0x1ULL << 32); - - if (region_range.end - 1 >= region_range.begin) { - range_extend(range, ®ion_range); - } - } -} - -void pci_bus_get_w64_range(PCIBus *bus, Range *range) -{ - range->begin = range->end = 0; - pci_for_each_device_under_bus(bus, pci_dev_get_w64, range); -} - -static bool pcie_has_upstream_port(PCIDevice *dev) -{ - PCIDevice *parent_dev = pci_bridge_get_device(dev->bus); - - /* Device associated with an upstream port. - * As there are several types of these, it's easier to check the - * parent device: upstream ports are always connected to - * root or downstream ports. - */ - return parent_dev && - pci_is_express(parent_dev) && - parent_dev->exp.exp_cap && - (pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_ROOT_PORT || - pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_DOWNSTREAM); -} - -PCIDevice *pci_get_function_0(PCIDevice *pci_dev) -{ - if(pcie_has_upstream_port(pci_dev)) { - /* With an upstream PCIe port, we only support 1 device at slot 0 */ - return pci_dev->bus->devices[0]; - } else { - /* Other bus types might support multiple devices at slots 0-31 */ - return pci_dev->bus->devices[PCI_DEVFN(PCI_SLOT(pci_dev->devfn), 0)]; - } -} - -static const TypeInfo pci_device_type_info = { - .name = TYPE_PCI_DEVICE, - .parent = TYPE_DEVICE, - .instance_size = sizeof(PCIDevice), - .abstract = true, - .class_size = sizeof(PCIDeviceClass), - .class_init = pci_device_class_init, -}; - -static void pci_register_types(void) -{ - type_register_static(&pci_bus_info); - type_register_static(&pcie_bus_info); - type_register_static(&pci_device_type_info); -} - -type_init(pci_register_types) diff --git a/qemu/hw/pci/pci_bridge.c b/qemu/hw/pci/pci_bridge.c deleted file mode 100644 index 3cf30bd33..000000000 --- a/qemu/hw/pci/pci_bridge.c +++ /dev/null @@ -1,419 +0,0 @@ -/* - * QEMU PCI bus manager - * - * Copyright (c) 2004 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to dea - - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM - - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -/* - * split out from pci.c - * Copyright (c) 2010 Isaku Yamahata - * VA Linux Systems Japan K.K. - */ - -#include "qemu/osdep.h" -#include "hw/pci/pci_bridge.h" -#include "hw/pci/pci_bus.h" -#include "qemu/range.h" - -/* PCI bridge subsystem vendor ID helper functions */ -#define PCI_SSVID_SIZEOF 8 -#define PCI_SSVID_SVID 4 -#define PCI_SSVID_SSID 6 - -int pci_bridge_ssvid_init(PCIDevice *dev, uint8_t offset, - uint16_t svid, uint16_t ssid) -{ - int pos; - pos = pci_add_capability(dev, PCI_CAP_ID_SSVID, offset, PCI_SSVID_SIZEOF); - if (pos < 0) { - return pos; - } - - pci_set_word(dev->config + pos + PCI_SSVID_SVID, svid); - pci_set_word(dev->config + pos + PCI_SSVID_SSID, ssid); - return pos; -} - -/* Accessor function to get parent bridge device from pci bus. */ -PCIDevice *pci_bridge_get_device(PCIBus *bus) -{ - return bus->parent_dev; -} - -/* Accessor function to get secondary bus from pci-to-pci bridge device */ -PCIBus *pci_bridge_get_sec_bus(PCIBridge *br) -{ - return &br->sec_bus; -} - -static uint32_t pci_config_get_io_base(const PCIDevice *d, - uint32_t base, uint32_t base_upper16) -{ - uint32_t val; - - val = ((uint32_t)d->config[base] & PCI_IO_RANGE_MASK) << 8; - if (d->config[base] & PCI_IO_RANGE_TYPE_32) { - val |= (uint32_t)pci_get_word(d->config + base_upper16) << 16; - } - return val; -} - -static pcibus_t pci_config_get_memory_base(const PCIDevice *d, uint32_t base) -{ - return ((pcibus_t)pci_get_word(d->config + base) & PCI_MEMORY_RANGE_MASK) - << 16; -} - -static pcibus_t pci_config_get_pref_base(const PCIDevice *d, - uint32_t base, uint32_t upper) -{ - pcibus_t tmp; - pcibus_t val; - - tmp = (pcibus_t)pci_get_word(d->config + base); - val = (tmp & PCI_PREF_RANGE_MASK) << 16; - if (tmp & PCI_PREF_RANGE_TYPE_64) { - val |= (pcibus_t)pci_get_long(d->config + upper) << 32; - } - return val; -} - -/* accessor function to get bridge filtering base address */ -pcibus_t pci_bridge_get_base(const PCIDevice *bridge, uint8_t type) -{ - pcibus_t base; - if (type & PCI_BASE_ADDRESS_SPACE_IO) { - base = pci_config_get_io_base(bridge, - PCI_IO_BASE, PCI_IO_BASE_UPPER16); - } else { - if (type & PCI_BASE_ADDRESS_MEM_PREFETCH) { - base = pci_config_get_pref_base( - bridge, PCI_PREF_MEMORY_BASE, PCI_PREF_BASE_UPPER32); - } else { - base = pci_config_get_memory_base(bridge, PCI_MEMORY_BASE); - } - } - - return base; -} - -/* accessor funciton to get bridge filtering limit */ -pcibus_t pci_bridge_get_limit(const PCIDevice *bridge, uint8_t type) -{ - pcibus_t limit; - if (type & PCI_BASE_ADDRESS_SPACE_IO) { - limit = pci_config_get_io_base(bridge, - PCI_IO_LIMIT, PCI_IO_LIMIT_UPPER16); - limit |= 0xfff; /* PCI bridge spec 3.2.5.6. */ - } else { - if (type & PCI_BASE_ADDRESS_MEM_PREFETCH) { - limit = pci_config_get_pref_base( - bridge, PCI_PREF_MEMORY_LIMIT, PCI_PREF_LIMIT_UPPER32); - } else { - limit = pci_config_get_memory_base(bridge, PCI_MEMORY_LIMIT); - } - limit |= 0xfffff; /* PCI bridge spec 3.2.5.{1, 8}. */ - } - return limit; -} - -static void pci_bridge_init_alias(PCIBridge *bridge, MemoryRegion *alias, - uint8_t type, const char *name, - MemoryRegion *space, - MemoryRegion *parent_space, - bool enabled) -{ - PCIDevice *bridge_dev = PCI_DEVICE(bridge); - pcibus_t base = pci_bridge_get_base(bridge_dev, type); - pcibus_t limit = pci_bridge_get_limit(bridge_dev, type); - /* TODO: this doesn't handle base = 0 limit = 2^64 - 1 correctly. - * Apparently no way to do this with existing memory APIs. */ - pcibus_t size = enabled && limit >= base ? limit + 1 - base : 0; - - memory_region_init_alias(alias, OBJECT(bridge), name, space, base, size); - memory_region_add_subregion_overlap(parent_space, base, alias, 1); -} - -static void pci_bridge_init_vga_aliases(PCIBridge *br, PCIBus *parent, - MemoryRegion *alias_vga) -{ - PCIDevice *pd = PCI_DEVICE(br); - uint16_t brctl = pci_get_word(pd->config + PCI_BRIDGE_CONTROL); - - memory_region_init_alias(&alias_vga[QEMU_PCI_VGA_IO_LO], OBJECT(br), - "pci_bridge_vga_io_lo", &br->address_space_io, - QEMU_PCI_VGA_IO_LO_BASE, QEMU_PCI_VGA_IO_LO_SIZE); - memory_region_init_alias(&alias_vga[QEMU_PCI_VGA_IO_HI], OBJECT(br), - "pci_bridge_vga_io_hi", &br->address_space_io, - QEMU_PCI_VGA_IO_HI_BASE, QEMU_PCI_VGA_IO_HI_SIZE); - memory_region_init_alias(&alias_vga[QEMU_PCI_VGA_MEM], OBJECT(br), - "pci_bridge_vga_mem", &br->address_space_mem, - QEMU_PCI_VGA_MEM_BASE, QEMU_PCI_VGA_MEM_SIZE); - - if (brctl & PCI_BRIDGE_CTL_VGA) { - pci_register_vga(pd, &alias_vga[QEMU_PCI_VGA_MEM], - &alias_vga[QEMU_PCI_VGA_IO_LO], - &alias_vga[QEMU_PCI_VGA_IO_HI]); - } -} - -static PCIBridgeWindows *pci_bridge_region_init(PCIBridge *br) -{ - PCIDevice *pd = PCI_DEVICE(br); - PCIBus *parent = pd->bus; - PCIBridgeWindows *w = g_new(PCIBridgeWindows, 1); - uint16_t cmd = pci_get_word(pd->config + PCI_COMMAND); - - pci_bridge_init_alias(br, &w->alias_pref_mem, - PCI_BASE_ADDRESS_MEM_PREFETCH, - "pci_bridge_pref_mem", - &br->address_space_mem, - parent->address_space_mem, - cmd & PCI_COMMAND_MEMORY); - pci_bridge_init_alias(br, &w->alias_mem, - PCI_BASE_ADDRESS_SPACE_MEMORY, - "pci_bridge_mem", - &br->address_space_mem, - parent->address_space_mem, - cmd & PCI_COMMAND_MEMORY); - pci_bridge_init_alias(br, &w->alias_io, - PCI_BASE_ADDRESS_SPACE_IO, - "pci_bridge_io", - &br->address_space_io, - parent->address_space_io, - cmd & PCI_COMMAND_IO); - - pci_bridge_init_vga_aliases(br, parent, w->alias_vga); - - return w; -} - -static void pci_bridge_region_del(PCIBridge *br, PCIBridgeWindows *w) -{ - PCIDevice *pd = PCI_DEVICE(br); - PCIBus *parent = pd->bus; - - memory_region_del_subregion(parent->address_space_io, &w->alias_io); - memory_region_del_subregion(parent->address_space_mem, &w->alias_mem); - memory_region_del_subregion(parent->address_space_mem, &w->alias_pref_mem); - pci_unregister_vga(pd); -} - -static void pci_bridge_region_cleanup(PCIBridge *br, PCIBridgeWindows *w) -{ - object_unparent(OBJECT(&w->alias_io)); - object_unparent(OBJECT(&w->alias_mem)); - object_unparent(OBJECT(&w->alias_pref_mem)); - object_unparent(OBJECT(&w->alias_vga[QEMU_PCI_VGA_IO_LO])); - object_unparent(OBJECT(&w->alias_vga[QEMU_PCI_VGA_IO_HI])); - object_unparent(OBJECT(&w->alias_vga[QEMU_PCI_VGA_MEM])); - g_free(w); -} - -void pci_bridge_update_mappings(PCIBridge *br) -{ - PCIBridgeWindows *w = br->windows; - - /* Make updates atomic to: handle the case of one VCPU updating the bridge - * while another accesses an unaffected region. */ - memory_region_transaction_begin(); - pci_bridge_region_del(br, br->windows); - br->windows = pci_bridge_region_init(br); - memory_region_transaction_commit(); - pci_bridge_region_cleanup(br, w); -} - -/* default write_config function for PCI-to-PCI bridge */ -void pci_bridge_write_config(PCIDevice *d, - uint32_t address, uint32_t val, int len) -{ - PCIBridge *s = PCI_BRIDGE(d); - uint16_t oldctl = pci_get_word(d->config + PCI_BRIDGE_CONTROL); - uint16_t newctl; - - pci_default_write_config(d, address, val, len); - - if (ranges_overlap(address, len, PCI_COMMAND, 2) || - - /* io base/limit */ - ranges_overlap(address, len, PCI_IO_BASE, 2) || - - /* memory base/limit, prefetchable base/limit and - io base/limit upper 16 */ - ranges_overlap(address, len, PCI_MEMORY_BASE, 20) || - - /* vga enable */ - ranges_overlap(address, len, PCI_BRIDGE_CONTROL, 2)) { - pci_bridge_update_mappings(s); - } - - newctl = pci_get_word(d->config + PCI_BRIDGE_CONTROL); - if (~oldctl & newctl & PCI_BRIDGE_CTL_BUS_RESET) { - /* Trigger hot reset on 0->1 transition. */ - qbus_reset_all(&s->sec_bus.qbus); - } -} - -void pci_bridge_disable_base_limit(PCIDevice *dev) -{ - uint8_t *conf = dev->config; - - pci_byte_test_and_set_mask(conf + PCI_IO_BASE, - PCI_IO_RANGE_MASK & 0xff); - pci_byte_test_and_clear_mask(conf + PCI_IO_LIMIT, - PCI_IO_RANGE_MASK & 0xff); - pci_word_test_and_set_mask(conf + PCI_MEMORY_BASE, - PCI_MEMORY_RANGE_MASK & 0xffff); - pci_word_test_and_clear_mask(conf + PCI_MEMORY_LIMIT, - PCI_MEMORY_RANGE_MASK & 0xffff); - pci_word_test_and_set_mask(conf + PCI_PREF_MEMORY_BASE, - PCI_PREF_RANGE_MASK & 0xffff); - pci_word_test_and_clear_mask(conf + PCI_PREF_MEMORY_LIMIT, - PCI_PREF_RANGE_MASK & 0xffff); - pci_set_long(conf + PCI_PREF_BASE_UPPER32, 0); - pci_set_long(conf + PCI_PREF_LIMIT_UPPER32, 0); -} - -/* reset bridge specific configuration registers */ -void pci_bridge_reset(DeviceState *qdev) -{ - PCIDevice *dev = PCI_DEVICE(qdev); - uint8_t *conf = dev->config; - - conf[PCI_PRIMARY_BUS] = 0; - conf[PCI_SECONDARY_BUS] = 0; - conf[PCI_SUBORDINATE_BUS] = 0; - conf[PCI_SEC_LATENCY_TIMER] = 0; - - /* - * the default values for base/limit registers aren't specified - * in the PCI-to-PCI-bridge spec. So we don't thouch them here. - * Each implementation can override it. - * typical implementation does - * zero base/limit registers or - * disable forwarding: pci_bridge_disable_base_limit() - * If disable forwarding is wanted, call pci_bridge_disable_base_limit() - * after this function. - */ - pci_byte_test_and_clear_mask(conf + PCI_IO_BASE, - PCI_IO_RANGE_MASK & 0xff); - pci_byte_test_and_clear_mask(conf + PCI_IO_LIMIT, - PCI_IO_RANGE_MASK & 0xff); - pci_word_test_and_clear_mask(conf + PCI_MEMORY_BASE, - PCI_MEMORY_RANGE_MASK & 0xffff); - pci_word_test_and_clear_mask(conf + PCI_MEMORY_LIMIT, - PCI_MEMORY_RANGE_MASK & 0xffff); - pci_word_test_and_clear_mask(conf + PCI_PREF_MEMORY_BASE, - PCI_PREF_RANGE_MASK & 0xffff); - pci_word_test_and_clear_mask(conf + PCI_PREF_MEMORY_LIMIT, - PCI_PREF_RANGE_MASK & 0xffff); - pci_set_long(conf + PCI_PREF_BASE_UPPER32, 0); - pci_set_long(conf + PCI_PREF_LIMIT_UPPER32, 0); - - pci_set_word(conf + PCI_BRIDGE_CONTROL, 0); -} - -/* default qdev initialization function for PCI-to-PCI bridge */ -void pci_bridge_initfn(PCIDevice *dev, const char *typename) -{ - PCIBus *parent = dev->bus; - PCIBridge *br = PCI_BRIDGE(dev); - PCIBus *sec_bus = &br->sec_bus; - - pci_word_test_and_set_mask(dev->config + PCI_STATUS, - PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); - - /* - * TODO: We implement VGA Enable in the Bridge Control Register - * therefore per the PCI to PCI bridge spec we must also implement - * VGA Palette Snooping. When done, set this bit writable: - * - * pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, - * PCI_COMMAND_VGA_PALETTE); - */ - - pci_config_set_class(dev->config, PCI_CLASS_BRIDGE_PCI); - dev->config[PCI_HEADER_TYPE] = - (dev->config[PCI_HEADER_TYPE] & PCI_HEADER_TYPE_MULTI_FUNCTION) | - PCI_HEADER_TYPE_BRIDGE; - pci_set_word(dev->config + PCI_SEC_STATUS, - PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); - - /* - * If we don't specify the name, the bus will be addressed as .0, where - * id is the device id. - * Since PCI Bridge devices have a single bus each, we don't need the index: - * let users address the bus using the device name. - */ - if (!br->bus_name && dev->qdev.id && *dev->qdev.id) { - br->bus_name = dev->qdev.id; - } - - qbus_create_inplace(sec_bus, sizeof(br->sec_bus), typename, DEVICE(dev), - br->bus_name); - sec_bus->parent_dev = dev; - sec_bus->map_irq = br->map_irq ? br->map_irq : pci_swizzle_map_irq_fn; - sec_bus->address_space_mem = &br->address_space_mem; - memory_region_init(&br->address_space_mem, OBJECT(br), "pci_bridge_pci", UINT64_MAX); - sec_bus->address_space_io = &br->address_space_io; - memory_region_init(&br->address_space_io, OBJECT(br), "pci_bridge_io", 65536); - br->windows = pci_bridge_region_init(br); - QLIST_INIT(&sec_bus->child); - QLIST_INSERT_HEAD(&parent->child, sec_bus, sibling); -} - -/* default qdev clean up function for PCI-to-PCI bridge */ -void pci_bridge_exitfn(PCIDevice *pci_dev) -{ - PCIBridge *s = PCI_BRIDGE(pci_dev); - assert(QLIST_EMPTY(&s->sec_bus.child)); - QLIST_REMOVE(&s->sec_bus, sibling); - pci_bridge_region_del(s, s->windows); - pci_bridge_region_cleanup(s, s->windows); - /* object_unparent() is called automatically during device deletion */ -} - -/* - * before qdev initialization(qdev_init()), this function sets bus_name and - * map_irq callback which are necessry for pci_bridge_initfn() to - * initialize bus. - */ -void pci_bridge_map_irq(PCIBridge *br, const char* bus_name, - pci_map_irq_fn map_irq) -{ - br->map_irq = map_irq; - br->bus_name = bus_name; -} - -static const TypeInfo pci_bridge_type_info = { - .name = TYPE_PCI_BRIDGE, - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(PCIBridge), - .abstract = true, -}; - -static void pci_bridge_register_types(void) -{ - type_register_static(&pci_bridge_type_info); -} - -type_init(pci_bridge_register_types) diff --git a/qemu/hw/pci/pci_host.c b/qemu/hw/pci/pci_host.c deleted file mode 100644 index 5eaa935cb..000000000 --- a/qemu/hw/pci/pci_host.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * pci_host.c - * - * Copyright (c) 2009 Isaku Yamahata - * VA Linux Systems Japan K.K. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "hw/pci/pci.h" -#include "hw/pci/pci_host.h" -#include "hw/pci/pci_bus.h" -#include "trace.h" - -/* debug PCI */ -//#define DEBUG_PCI - -#ifdef DEBUG_PCI -#define PCI_DPRINTF(fmt, ...) \ -do { printf("pci_host_data: " fmt , ## __VA_ARGS__); } while (0) -#else -#define PCI_DPRINTF(fmt, ...) -#endif - -/* - * PCI address - * bit 16 - 24: bus number - * bit 8 - 15: devfun number - * bit 0 - 7: offset in configuration space of a given pci device - */ - -/* the helper function to get a PCIDevice* for a given pci address */ -static inline PCIDevice *pci_dev_find_by_addr(PCIBus *bus, uint32_t addr) -{ - uint8_t bus_num = addr >> 16; - uint8_t devfn = addr >> 8; - - return pci_find_device(bus, bus_num, devfn); -} - -void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr, - uint32_t limit, uint32_t val, uint32_t len) -{ - assert(len <= 4); - /* non-zero functions are only exposed when function 0 is present, - * allowing direct removal of unexposed functions. - */ - if (pci_dev->qdev.hotplugged && !pci_get_function_0(pci_dev)) { - return; - } - - trace_pci_cfg_write(pci_dev->name, PCI_SLOT(pci_dev->devfn), - PCI_FUNC(pci_dev->devfn), addr, val); - pci_dev->config_write(pci_dev, addr, val, MIN(len, limit - addr)); -} - -uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr, - uint32_t limit, uint32_t len) -{ - uint32_t ret; - - assert(len <= 4); - /* non-zero functions are only exposed when function 0 is present, - * allowing direct removal of unexposed functions. - */ - if (pci_dev->qdev.hotplugged && !pci_get_function_0(pci_dev)) { - return ~0x0; - } - - ret = pci_dev->config_read(pci_dev, addr, MIN(len, limit - addr)); - trace_pci_cfg_read(pci_dev->name, PCI_SLOT(pci_dev->devfn), - PCI_FUNC(pci_dev->devfn), addr, ret); - - return ret; -} - -void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len) -{ - PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr); - uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1); - - if (!pci_dev) { - return; - } - - PCI_DPRINTF("%s: %s: addr=%02" PRIx32 " val=%08" PRIx32 " len=%d\n", - __func__, pci_dev->name, config_addr, val, len); - pci_host_config_write_common(pci_dev, config_addr, PCI_CONFIG_SPACE_SIZE, - val, len); -} - -uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len) -{ - PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr); - uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1); - uint32_t val; - - if (!pci_dev) { - return ~0x0; - } - - val = pci_host_config_read_common(pci_dev, config_addr, - PCI_CONFIG_SPACE_SIZE, len); - PCI_DPRINTF("%s: %s: addr=%02"PRIx32" val=%08"PRIx32" len=%d\n", - __func__, pci_dev->name, config_addr, val, len); - - return val; -} - -static void pci_host_config_write(void *opaque, hwaddr addr, - uint64_t val, unsigned len) -{ - PCIHostState *s = opaque; - - PCI_DPRINTF("%s addr " TARGET_FMT_plx " len %d val %"PRIx64"\n", - __func__, addr, len, val); - if (addr != 0 || len != 4) { - return; - } - s->config_reg = val; -} - -static uint64_t pci_host_config_read(void *opaque, hwaddr addr, - unsigned len) -{ - PCIHostState *s = opaque; - uint32_t val = s->config_reg; - - PCI_DPRINTF("%s addr " TARGET_FMT_plx " len %d val %"PRIx32"\n", - __func__, addr, len, val); - return val; -} - -static void pci_host_data_write(void *opaque, hwaddr addr, - uint64_t val, unsigned len) -{ - PCIHostState *s = opaque; - PCI_DPRINTF("write addr " TARGET_FMT_plx " len %d val %x\n", - addr, len, (unsigned)val); - if (s->config_reg & (1u << 31)) - pci_data_write(s->bus, s->config_reg | (addr & 3), val, len); -} - -static uint64_t pci_host_data_read(void *opaque, - hwaddr addr, unsigned len) -{ - PCIHostState *s = opaque; - uint32_t val; - if (!(s->config_reg & (1U << 31))) { - return 0xffffffff; - } - val = pci_data_read(s->bus, s->config_reg | (addr & 3), len); - PCI_DPRINTF("read addr " TARGET_FMT_plx " len %d val %x\n", - addr, len, val); - return val; -} - -const MemoryRegionOps pci_host_conf_le_ops = { - .read = pci_host_config_read, - .write = pci_host_config_write, - .endianness = DEVICE_LITTLE_ENDIAN, -}; - -const MemoryRegionOps pci_host_conf_be_ops = { - .read = pci_host_config_read, - .write = pci_host_config_write, - .endianness = DEVICE_BIG_ENDIAN, -}; - -const MemoryRegionOps pci_host_data_le_ops = { - .read = pci_host_data_read, - .write = pci_host_data_write, - .endianness = DEVICE_LITTLE_ENDIAN, -}; - -const MemoryRegionOps pci_host_data_be_ops = { - .read = pci_host_data_read, - .write = pci_host_data_write, - .endianness = DEVICE_BIG_ENDIAN, -}; - -static const TypeInfo pci_host_type_info = { - .name = TYPE_PCI_HOST_BRIDGE, - .parent = TYPE_SYS_BUS_DEVICE, - .abstract = true, - .class_size = sizeof(PCIHostBridgeClass), - .instance_size = sizeof(PCIHostState), -}; - -static void pci_host_register_types(void) -{ - type_register_static(&pci_host_type_info); -} - -type_init(pci_host_register_types) diff --git a/qemu/hw/pci/pcie.c b/qemu/hw/pci/pcie.c deleted file mode 100644 index 728386ada..000000000 --- a/qemu/hw/pci/pcie.c +++ /dev/null @@ -1,649 +0,0 @@ -/* - * pcie.c - * - * Copyright (c) 2010 Isaku Yamahata - * VA Linux Systems Japan K.K. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "qemu-common.h" -#include "hw/pci/pci_bridge.h" -#include "hw/pci/pcie.h" -#include "hw/pci/msix.h" -#include "hw/pci/msi.h" -#include "hw/pci/pci_bus.h" -#include "hw/pci/pcie_regs.h" -#include "qemu/range.h" - -//#define DEBUG_PCIE -#ifdef DEBUG_PCIE -# define PCIE_DPRINTF(fmt, ...) \ - fprintf(stderr, "%s:%d " fmt, __func__, __LINE__, ## __VA_ARGS__) -#else -# define PCIE_DPRINTF(fmt, ...) do {} while (0) -#endif -#define PCIE_DEV_PRINTF(dev, fmt, ...) \ - PCIE_DPRINTF("%s:%x "fmt, (dev)->name, (dev)->devfn, ## __VA_ARGS__) - - -/*************************************************************************** - * pci express capability helper functions - */ -int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port) -{ - int pos; - uint8_t *exp_cap; - - assert(pci_is_express(dev)); - - pos = pci_add_capability(dev, PCI_CAP_ID_EXP, offset, - PCI_EXP_VER2_SIZEOF); - if (pos < 0) { - return pos; - } - dev->exp.exp_cap = pos; - exp_cap = dev->config + pos; - - /* capability register - interrupt message number defaults to 0 */ - pci_set_word(exp_cap + PCI_EXP_FLAGS, - ((type << PCI_EXP_FLAGS_TYPE_SHIFT) & PCI_EXP_FLAGS_TYPE) | - PCI_EXP_FLAGS_VER2); - - /* device capability register - * table 7-12: - * roll based error reporting bit must be set by all - * Functions conforming to the ECN, PCI Express Base - * Specification, Revision 1.1., or subsequent PCI Express Base - * Specification revisions. - */ - pci_set_long(exp_cap + PCI_EXP_DEVCAP, PCI_EXP_DEVCAP_RBER); - - pci_set_long(exp_cap + PCI_EXP_LNKCAP, - (port << PCI_EXP_LNKCAP_PN_SHIFT) | - PCI_EXP_LNKCAP_ASPMS_0S | - PCI_EXP_LNK_MLW_1 | - PCI_EXP_LNK_LS_25); - - pci_set_word(exp_cap + PCI_EXP_LNKSTA, - PCI_EXP_LNK_MLW_1 | PCI_EXP_LNK_LS_25 |PCI_EXP_LNKSTA_DLLLA); - - pci_set_long(exp_cap + PCI_EXP_DEVCAP2, - PCI_EXP_DEVCAP2_EFF | PCI_EXP_DEVCAP2_EETLPP); - - pci_set_word(dev->wmask + pos + PCI_EXP_DEVCTL2, PCI_EXP_DEVCTL2_EETLPPB); - return pos; -} - -int pcie_endpoint_cap_init(PCIDevice *dev, uint8_t offset) -{ - uint8_t type = PCI_EXP_TYPE_ENDPOINT; - - /* - * Windows guests will report Code 10, device cannot start, if - * a regular Endpoint type is exposed on a root complex. These - * should instead be Root Complex Integrated Endpoints. - */ - if (pci_bus_is_express(dev->bus) && pci_bus_is_root(dev->bus)) { - type = PCI_EXP_TYPE_RC_END; - } - - return pcie_cap_init(dev, offset, type, 0); -} - -void pcie_cap_exit(PCIDevice *dev) -{ - pci_del_capability(dev, PCI_CAP_ID_EXP, PCI_EXP_VER2_SIZEOF); -} - -uint8_t pcie_cap_get_type(const PCIDevice *dev) -{ - uint32_t pos = dev->exp.exp_cap; - assert(pos > 0); - return (pci_get_word(dev->config + pos + PCI_EXP_FLAGS) & - PCI_EXP_FLAGS_TYPE) >> PCI_EXP_FLAGS_TYPE_SHIFT; -} - -/* MSI/MSI-X */ -/* pci express interrupt message number */ -/* 7.8.2 PCI Express Capabilities Register: Interrupt Message Number */ -void pcie_cap_flags_set_vector(PCIDevice *dev, uint8_t vector) -{ - uint8_t *exp_cap = dev->config + dev->exp.exp_cap; - assert(vector < 32); - pci_word_test_and_clear_mask(exp_cap + PCI_EXP_FLAGS, PCI_EXP_FLAGS_IRQ); - pci_word_test_and_set_mask(exp_cap + PCI_EXP_FLAGS, - vector << PCI_EXP_FLAGS_IRQ_SHIFT); -} - -uint8_t pcie_cap_flags_get_vector(PCIDevice *dev) -{ - return (pci_get_word(dev->config + dev->exp.exp_cap + PCI_EXP_FLAGS) & - PCI_EXP_FLAGS_IRQ) >> PCI_EXP_FLAGS_IRQ_SHIFT; -} - -void pcie_cap_deverr_init(PCIDevice *dev) -{ - uint32_t pos = dev->exp.exp_cap; - pci_long_test_and_set_mask(dev->config + pos + PCI_EXP_DEVCAP, - PCI_EXP_DEVCAP_RBER); - pci_long_test_and_set_mask(dev->wmask + pos + PCI_EXP_DEVCTL, - PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | - PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE); - pci_long_test_and_set_mask(dev->w1cmask + pos + PCI_EXP_DEVSTA, - PCI_EXP_DEVSTA_CED | PCI_EXP_DEVSTA_NFED | - PCI_EXP_DEVSTA_FED | PCI_EXP_DEVSTA_URD); -} - -void pcie_cap_deverr_reset(PCIDevice *dev) -{ - uint8_t *devctl = dev->config + dev->exp.exp_cap + PCI_EXP_DEVCTL; - pci_long_test_and_clear_mask(devctl, - PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | - PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE); -} - -static void hotplug_event_update_event_status(PCIDevice *dev) -{ - uint32_t pos = dev->exp.exp_cap; - uint8_t *exp_cap = dev->config + pos; - uint16_t sltctl = pci_get_word(exp_cap + PCI_EXP_SLTCTL); - uint16_t sltsta = pci_get_word(exp_cap + PCI_EXP_SLTSTA); - - dev->exp.hpev_notified = (sltctl & PCI_EXP_SLTCTL_HPIE) && - (sltsta & sltctl & PCI_EXP_HP_EV_SUPPORTED); -} - -static void hotplug_event_notify(PCIDevice *dev) -{ - bool prev = dev->exp.hpev_notified; - - hotplug_event_update_event_status(dev); - - if (prev == dev->exp.hpev_notified) { - return; - } - - /* Note: the logic above does not take into account whether interrupts - * are masked. The result is that interrupt will be sent when it is - * subsequently unmasked. This appears to be legal: Section 6.7.3.4: - * The Port may optionally send an MSI when there are hot-plug events that - * occur while interrupt generation is disabled, and interrupt generation is - * subsequently enabled. */ - if (msix_enabled(dev)) { - msix_notify(dev, pcie_cap_flags_get_vector(dev)); - } else if (msi_enabled(dev)) { - msi_notify(dev, pcie_cap_flags_get_vector(dev)); - } else { - pci_set_irq(dev, dev->exp.hpev_notified); - } -} - -static void hotplug_event_clear(PCIDevice *dev) -{ - hotplug_event_update_event_status(dev); - if (!msix_enabled(dev) && !msi_enabled(dev) && !dev->exp.hpev_notified) { - pci_irq_deassert(dev); - } -} - -/* - * A PCI Express Hot-Plug Event has occurred, so update slot status register - * and notify OS of the event if necessary. - * - * 6.7.3 PCI Express Hot-Plug Events - * 6.7.3.4 Software Notification of Hot-Plug Events - */ -static void pcie_cap_slot_event(PCIDevice *dev, PCIExpressHotPlugEvent event) -{ - /* Minor optimization: if nothing changed - no event is needed. */ - if (pci_word_test_and_set_mask(dev->config + dev->exp.exp_cap + - PCI_EXP_SLTSTA, event)) { - return; - } - hotplug_event_notify(dev); -} - -static void pcie_cap_slot_hotplug_common(PCIDevice *hotplug_dev, - DeviceState *dev, - uint8_t **exp_cap, Error **errp) -{ - *exp_cap = hotplug_dev->config + hotplug_dev->exp.exp_cap; - uint16_t sltsta = pci_get_word(*exp_cap + PCI_EXP_SLTSTA); - - PCIE_DEV_PRINTF(PCI_DEVICE(dev), "hotplug state: 0x%x\n", sltsta); - if (sltsta & PCI_EXP_SLTSTA_EIS) { - /* the slot is electromechanically locked. - * This error is propagated up to qdev and then to HMP/QMP. - */ - error_setg_errno(errp, EBUSY, "slot is electromechanically locked"); - } -} - -void pcie_cap_slot_hotplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, - Error **errp) -{ - uint8_t *exp_cap; - PCIDevice *pci_dev = PCI_DEVICE(dev); - - pcie_cap_slot_hotplug_common(PCI_DEVICE(hotplug_dev), dev, &exp_cap, errp); - - /* Don't send event when device is enabled during qemu machine creation: - * it is present on boot, no hotplug event is necessary. We do send an - * event when the device is disabled later. */ - if (!dev->hotplugged) { - pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTSTA, - PCI_EXP_SLTSTA_PDS); - return; - } - - /* To enable multifunction hot-plug, we just ensure the function - * 0 added last. When function 0 is added, we set the sltsta and - * inform OS via event notification. - */ - if (pci_get_function_0(pci_dev)) { - pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTSTA, - PCI_EXP_SLTSTA_PDS); - pcie_cap_slot_event(PCI_DEVICE(hotplug_dev), - PCI_EXP_HP_EV_PDC | PCI_EXP_HP_EV_ABP); - } -} - -static void pcie_unplug_device(PCIBus *bus, PCIDevice *dev, void *opaque) -{ - object_unparent(OBJECT(dev)); -} - -void pcie_cap_slot_hot_unplug_request_cb(HotplugHandler *hotplug_dev, - DeviceState *dev, Error **errp) -{ - uint8_t *exp_cap; - PCIDevice *pci_dev = PCI_DEVICE(dev); - PCIBus *bus = pci_dev->bus; - - pcie_cap_slot_hotplug_common(PCI_DEVICE(hotplug_dev), dev, &exp_cap, errp); - - /* In case user cancel the operation of multi-function hot-add, - * remove the function that is unexposed to guest individually, - * without interaction with guest. - */ - if (pci_dev->devfn && - !bus->devices[0]) { - pcie_unplug_device(bus, pci_dev, NULL); - - return; - } - - pcie_cap_slot_push_attention_button(PCI_DEVICE(hotplug_dev)); -} - -/* pci express slot for pci express root/downstream port - PCI express capability slot registers */ -void pcie_cap_slot_init(PCIDevice *dev, uint16_t slot) -{ - uint32_t pos = dev->exp.exp_cap; - - pci_word_test_and_set_mask(dev->config + pos + PCI_EXP_FLAGS, - PCI_EXP_FLAGS_SLOT); - - pci_long_test_and_clear_mask(dev->config + pos + PCI_EXP_SLTCAP, - ~PCI_EXP_SLTCAP_PSN); - pci_long_test_and_set_mask(dev->config + pos + PCI_EXP_SLTCAP, - (slot << PCI_EXP_SLTCAP_PSN_SHIFT) | - PCI_EXP_SLTCAP_EIP | - PCI_EXP_SLTCAP_HPS | - PCI_EXP_SLTCAP_HPC | - PCI_EXP_SLTCAP_PIP | - PCI_EXP_SLTCAP_AIP | - PCI_EXP_SLTCAP_ABP); - - if (dev->cap_present & QEMU_PCIE_SLTCAP_PCP) { - pci_long_test_and_set_mask(dev->config + pos + PCI_EXP_SLTCAP, - PCI_EXP_SLTCAP_PCP); - pci_word_test_and_clear_mask(dev->config + pos + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_PCC); - pci_word_test_and_set_mask(dev->wmask + pos + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_PCC); - } - - pci_word_test_and_clear_mask(dev->config + pos + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_PIC | - PCI_EXP_SLTCTL_AIC); - pci_word_test_and_set_mask(dev->config + pos + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_PIC_OFF | - PCI_EXP_SLTCTL_AIC_OFF); - pci_word_test_and_set_mask(dev->wmask + pos + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_PIC | - PCI_EXP_SLTCTL_AIC | - PCI_EXP_SLTCTL_HPIE | - PCI_EXP_SLTCTL_CCIE | - PCI_EXP_SLTCTL_PDCE | - PCI_EXP_SLTCTL_ABPE); - /* Although reading PCI_EXP_SLTCTL_EIC returns always 0, - * make the bit writable here in order to detect 1b is written. - * pcie_cap_slot_write_config() test-and-clear the bit, so - * this bit always returns 0 to the guest. - */ - pci_word_test_and_set_mask(dev->wmask + pos + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_EIC); - - pci_word_test_and_set_mask(dev->w1cmask + pos + PCI_EXP_SLTSTA, - PCI_EXP_HP_EV_SUPPORTED); - - dev->exp.hpev_notified = false; - - qbus_set_hotplug_handler(BUS(pci_bridge_get_sec_bus(PCI_BRIDGE(dev))), - DEVICE(dev), NULL); -} - -void pcie_cap_slot_reset(PCIDevice *dev) -{ - uint8_t *exp_cap = dev->config + dev->exp.exp_cap; - uint8_t port_type = pcie_cap_get_type(dev); - - assert(port_type == PCI_EXP_TYPE_DOWNSTREAM || - port_type == PCI_EXP_TYPE_ROOT_PORT); - - PCIE_DEV_PRINTF(dev, "reset\n"); - - pci_word_test_and_clear_mask(exp_cap + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_EIC | - PCI_EXP_SLTCTL_PIC | - PCI_EXP_SLTCTL_AIC | - PCI_EXP_SLTCTL_HPIE | - PCI_EXP_SLTCTL_CCIE | - PCI_EXP_SLTCTL_PDCE | - PCI_EXP_SLTCTL_ABPE); - pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_AIC_OFF); - - if (dev->cap_present & QEMU_PCIE_SLTCAP_PCP) { - /* Downstream ports enforce device number 0. */ - bool populated = pci_bridge_get_sec_bus(PCI_BRIDGE(dev))->devices[0]; - uint16_t pic; - - if (populated) { - pci_word_test_and_clear_mask(exp_cap + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_PCC); - } else { - pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_PCC); - } - - pic = populated ? PCI_EXP_SLTCTL_PIC_ON : PCI_EXP_SLTCTL_PIC_OFF; - pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTCTL, pic); - } - - pci_word_test_and_clear_mask(exp_cap + PCI_EXP_SLTSTA, - PCI_EXP_SLTSTA_EIS |/* on reset, - the lock is released */ - PCI_EXP_SLTSTA_CC | - PCI_EXP_SLTSTA_PDC | - PCI_EXP_SLTSTA_ABP); - - hotplug_event_update_event_status(dev); -} - -void pcie_cap_slot_write_config(PCIDevice *dev, - uint32_t addr, uint32_t val, int len) -{ - uint32_t pos = dev->exp.exp_cap; - uint8_t *exp_cap = dev->config + pos; - uint16_t sltsta = pci_get_word(exp_cap + PCI_EXP_SLTSTA); - - if (ranges_overlap(addr, len, pos + PCI_EXP_SLTSTA, 2)) { - hotplug_event_clear(dev); - } - - if (!ranges_overlap(addr, len, pos + PCI_EXP_SLTCTL, 2)) { - return; - } - - if (pci_word_test_and_clear_mask(exp_cap + PCI_EXP_SLTCTL, - PCI_EXP_SLTCTL_EIC)) { - sltsta ^= PCI_EXP_SLTSTA_EIS; /* toggle PCI_EXP_SLTSTA_EIS bit */ - pci_set_word(exp_cap + PCI_EXP_SLTSTA, sltsta); - PCIE_DEV_PRINTF(dev, "PCI_EXP_SLTCTL_EIC: " - "sltsta -> 0x%02"PRIx16"\n", - sltsta); - } - - /* - * If the slot is polulated, power indicator is off and power - * controller is off, it is safe to detach the devices. - */ - if ((sltsta & PCI_EXP_SLTSTA_PDS) && (val & PCI_EXP_SLTCTL_PCC) && - ((val & PCI_EXP_SLTCTL_PIC_OFF) == PCI_EXP_SLTCTL_PIC_OFF)) { - PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(dev)); - pci_for_each_device(sec_bus, pci_bus_num(sec_bus), - pcie_unplug_device, NULL); - - pci_word_test_and_clear_mask(exp_cap + PCI_EXP_SLTSTA, - PCI_EXP_SLTSTA_PDS); - pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTSTA, - PCI_EXP_SLTSTA_PDC); - } - - hotplug_event_notify(dev); - - /* - * 6.7.3.2 Command Completed Events - * - * Software issues a command to a hot-plug capable Downstream Port by - * issuing a write transaction that targets any portion of the Port’s Slot - * Control register. A single write to the Slot Control register is - * considered to be a single command, even if the write affects more than - * one field in the Slot Control register. In response to this transaction, - * the Port must carry out the requested actions and then set the - * associated status field for the command completed event. */ - - /* Real hardware might take a while to complete requested command because - * physical movement would be involved like locking the electromechanical - * lock. However in our case, command is completed instantaneously above, - * so send a command completion event right now. - */ - pcie_cap_slot_event(dev, PCI_EXP_HP_EV_CCI); -} - -int pcie_cap_slot_post_load(void *opaque, int version_id) -{ - PCIDevice *dev = opaque; - hotplug_event_update_event_status(dev); - return 0; -} - -void pcie_cap_slot_push_attention_button(PCIDevice *dev) -{ - pcie_cap_slot_event(dev, PCI_EXP_HP_EV_ABP); -} - -/* root control/capabilities/status. PME isn't emulated for now */ -void pcie_cap_root_init(PCIDevice *dev) -{ - pci_set_word(dev->wmask + dev->exp.exp_cap + PCI_EXP_RTCTL, - PCI_EXP_RTCTL_SECEE | PCI_EXP_RTCTL_SENFEE | - PCI_EXP_RTCTL_SEFEE); -} - -void pcie_cap_root_reset(PCIDevice *dev) -{ - pci_set_word(dev->config + dev->exp.exp_cap + PCI_EXP_RTCTL, 0); -} - -/* function level reset(FLR) */ -void pcie_cap_flr_init(PCIDevice *dev) -{ - pci_long_test_and_set_mask(dev->config + dev->exp.exp_cap + PCI_EXP_DEVCAP, - PCI_EXP_DEVCAP_FLR); - - /* Although reading BCR_FLR returns always 0, - * the bit is made writable here in order to detect the 1b is written - * pcie_cap_flr_write_config() test-and-clear the bit, so - * this bit always returns 0 to the guest. - */ - pci_word_test_and_set_mask(dev->wmask + dev->exp.exp_cap + PCI_EXP_DEVCTL, - PCI_EXP_DEVCTL_BCR_FLR); -} - -void pcie_cap_flr_write_config(PCIDevice *dev, - uint32_t addr, uint32_t val, int len) -{ - uint8_t *devctl = dev->config + dev->exp.exp_cap + PCI_EXP_DEVCTL; - if (pci_get_word(devctl) & PCI_EXP_DEVCTL_BCR_FLR) { - /* Clear PCI_EXP_DEVCTL_BCR_FLR after invoking the reset handler - so the handler can detect FLR by looking at this bit. */ - pci_device_reset(dev); - pci_word_test_and_clear_mask(devctl, PCI_EXP_DEVCTL_BCR_FLR); - } -} - -/* Alternative Routing-ID Interpretation (ARI) - * forwarding support for root and downstream ports - */ -void pcie_cap_arifwd_init(PCIDevice *dev) -{ - uint32_t pos = dev->exp.exp_cap; - pci_long_test_and_set_mask(dev->config + pos + PCI_EXP_DEVCAP2, - PCI_EXP_DEVCAP2_ARI); - pci_long_test_and_set_mask(dev->wmask + pos + PCI_EXP_DEVCTL2, - PCI_EXP_DEVCTL2_ARI); -} - -void pcie_cap_arifwd_reset(PCIDevice *dev) -{ - uint8_t *devctl2 = dev->config + dev->exp.exp_cap + PCI_EXP_DEVCTL2; - pci_long_test_and_clear_mask(devctl2, PCI_EXP_DEVCTL2_ARI); -} - -bool pcie_cap_is_arifwd_enabled(const PCIDevice *dev) -{ - if (!pci_is_express(dev)) { - return false; - } - if (!dev->exp.exp_cap) { - return false; - } - - return pci_get_long(dev->config + dev->exp.exp_cap + PCI_EXP_DEVCTL2) & - PCI_EXP_DEVCTL2_ARI; -} - -/************************************************************************** - * pci express extended capability list management functions - * uint16_t ext_cap_id (16 bit) - * uint8_t cap_ver (4 bit) - * uint16_t cap_offset (12 bit) - * uint16_t ext_cap_size - */ - -static uint16_t pcie_find_capability_list(PCIDevice *dev, uint16_t cap_id, - uint16_t *prev_p) -{ - uint16_t prev = 0; - uint16_t next; - uint32_t header = pci_get_long(dev->config + PCI_CONFIG_SPACE_SIZE); - - if (!header) { - /* no extended capability */ - next = 0; - goto out; - } - for (next = PCI_CONFIG_SPACE_SIZE; next; - prev = next, next = PCI_EXT_CAP_NEXT(header)) { - - assert(next >= PCI_CONFIG_SPACE_SIZE); - assert(next <= PCIE_CONFIG_SPACE_SIZE - 8); - - header = pci_get_long(dev->config + next); - if (PCI_EXT_CAP_ID(header) == cap_id) { - break; - } - } - -out: - if (prev_p) { - *prev_p = prev; - } - return next; -} - -uint16_t pcie_find_capability(PCIDevice *dev, uint16_t cap_id) -{ - return pcie_find_capability_list(dev, cap_id, NULL); -} - -static void pcie_ext_cap_set_next(PCIDevice *dev, uint16_t pos, uint16_t next) -{ - uint32_t header = pci_get_long(dev->config + pos); - assert(!(next & (PCI_EXT_CAP_ALIGN - 1))); - header = (header & ~PCI_EXT_CAP_NEXT_MASK) | - ((next << PCI_EXT_CAP_NEXT_SHIFT) & PCI_EXT_CAP_NEXT_MASK); - pci_set_long(dev->config + pos, header); -} - -/* - * caller must supply valid (offset, size) * such that the range shouldn't - * overlap with other capability or other registers. - * This function doesn't check it. - */ -void pcie_add_capability(PCIDevice *dev, - uint16_t cap_id, uint8_t cap_ver, - uint16_t offset, uint16_t size) -{ - uint32_t header; - uint16_t next; - - assert(offset >= PCI_CONFIG_SPACE_SIZE); - assert(offset < offset + size); - assert(offset + size <= PCIE_CONFIG_SPACE_SIZE); - assert(size >= 8); - assert(pci_is_express(dev)); - - if (offset == PCI_CONFIG_SPACE_SIZE) { - header = pci_get_long(dev->config + offset); - next = PCI_EXT_CAP_NEXT(header); - } else { - uint16_t prev; - - /* 0 is reserved cap id. use internally to find the last capability - in the linked list */ - next = pcie_find_capability_list(dev, 0, &prev); - - assert(prev >= PCI_CONFIG_SPACE_SIZE); - assert(next == 0); - pcie_ext_cap_set_next(dev, prev, offset); - } - pci_set_long(dev->config + offset, PCI_EXT_CAP(cap_id, cap_ver, next)); - - /* Make capability read-only by default */ - memset(dev->wmask + offset, 0, size); - memset(dev->w1cmask + offset, 0, size); - /* Check capability by default */ - memset(dev->cmask + offset, 0xFF, size); -} - -/************************************************************************** - * pci express extended capability helper functions - */ - -/* ARI */ -void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn) -{ - pcie_add_capability(dev, PCI_EXT_CAP_ID_ARI, PCI_ARI_VER, - offset, PCI_ARI_SIZEOF); - pci_set_long(dev->config + offset + PCI_ARI_CAP, (nextfn & 0xff) << 8); -} diff --git a/qemu/hw/pci/pcie_aer.c b/qemu/hw/pci/pcie_aer.c deleted file mode 100644 index e2d4e68ba..000000000 --- a/qemu/hw/pci/pcie_aer.c +++ /dev/null @@ -1,1039 +0,0 @@ -/* - * pcie_aer.c - * - * Copyright (c) 2010 Isaku Yamahata - * VA Linux Systems Japan K.K. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "sysemu/sysemu.h" -#include "qapi/qmp/types.h" -#include "monitor/monitor.h" -#include "hw/pci/pci_bridge.h" -#include "hw/pci/pcie.h" -#include "hw/pci/msix.h" -#include "hw/pci/msi.h" -#include "hw/pci/pci_bus.h" -#include "hw/pci/pcie_regs.h" - -//#define DEBUG_PCIE -#ifdef DEBUG_PCIE -# define PCIE_DPRINTF(fmt, ...) \ - fprintf(stderr, "%s:%d " fmt, __func__, __LINE__, ## __VA_ARGS__) -#else -# define PCIE_DPRINTF(fmt, ...) do {} while (0) -#endif -#define PCIE_DEV_PRINTF(dev, fmt, ...) \ - PCIE_DPRINTF("%s:%x "fmt, (dev)->name, (dev)->devfn, ## __VA_ARGS__) - -#define PCI_ERR_SRC_COR_OFFS 0 -#define PCI_ERR_SRC_UNCOR_OFFS 2 - -/* From 6.2.7 Error Listing and Rules. Table 6-2, 6-3 and 6-4 */ -static uint32_t pcie_aer_uncor_default_severity(uint32_t status) -{ - switch (status) { - case PCI_ERR_UNC_INTN: - case PCI_ERR_UNC_DLP: - case PCI_ERR_UNC_SDN: - case PCI_ERR_UNC_RX_OVER: - case PCI_ERR_UNC_FCP: - case PCI_ERR_UNC_MALF_TLP: - return PCI_ERR_ROOT_CMD_FATAL_EN; - case PCI_ERR_UNC_POISON_TLP: - case PCI_ERR_UNC_ECRC: - case PCI_ERR_UNC_UNSUP: - case PCI_ERR_UNC_COMP_TIME: - case PCI_ERR_UNC_COMP_ABORT: - case PCI_ERR_UNC_UNX_COMP: - case PCI_ERR_UNC_ACSV: - case PCI_ERR_UNC_MCBTLP: - case PCI_ERR_UNC_ATOP_EBLOCKED: - case PCI_ERR_UNC_TLP_PRF_BLOCKED: - return PCI_ERR_ROOT_CMD_NONFATAL_EN; - default: - abort(); - break; - } - return PCI_ERR_ROOT_CMD_FATAL_EN; -} - -static int aer_log_add_err(PCIEAERLog *aer_log, const PCIEAERErr *err) -{ - if (aer_log->log_num == aer_log->log_max) { - return -1; - } - memcpy(&aer_log->log[aer_log->log_num], err, sizeof *err); - aer_log->log_num++; - return 0; -} - -static void aer_log_del_err(PCIEAERLog *aer_log, PCIEAERErr *err) -{ - assert(aer_log->log_num); - *err = aer_log->log[0]; - aer_log->log_num--; - memmove(&aer_log->log[0], &aer_log->log[1], - aer_log->log_num * sizeof *err); -} - -static void aer_log_clear_all_err(PCIEAERLog *aer_log) -{ - aer_log->log_num = 0; -} - -int pcie_aer_init(PCIDevice *dev, uint16_t offset, uint16_t size) -{ - PCIExpressDevice *exp; - - pcie_add_capability(dev, PCI_EXT_CAP_ID_ERR, PCI_ERR_VER, - offset, size); - exp = &dev->exp; - exp->aer_cap = offset; - - /* log_max is property */ - if (dev->exp.aer_log.log_max == PCIE_AER_LOG_MAX_UNSET) { - dev->exp.aer_log.log_max = PCIE_AER_LOG_MAX_DEFAULT; - } - /* clip down the value to avoid unreasobale memory usage */ - if (dev->exp.aer_log.log_max > PCIE_AER_LOG_MAX_LIMIT) { - return -EINVAL; - } - dev->exp.aer_log.log = g_malloc0(sizeof dev->exp.aer_log.log[0] * - dev->exp.aer_log.log_max); - - pci_set_long(dev->w1cmask + offset + PCI_ERR_UNCOR_STATUS, - PCI_ERR_UNC_SUPPORTED); - - pci_set_long(dev->config + offset + PCI_ERR_UNCOR_SEVER, - PCI_ERR_UNC_SEVERITY_DEFAULT); - pci_set_long(dev->wmask + offset + PCI_ERR_UNCOR_SEVER, - PCI_ERR_UNC_SUPPORTED); - - pci_long_test_and_set_mask(dev->w1cmask + offset + PCI_ERR_COR_STATUS, - PCI_ERR_COR_SUPPORTED); - - pci_set_long(dev->config + offset + PCI_ERR_COR_MASK, - PCI_ERR_COR_MASK_DEFAULT); - pci_set_long(dev->wmask + offset + PCI_ERR_COR_MASK, - PCI_ERR_COR_SUPPORTED); - - /* capabilities and control. multiple header logging is supported */ - if (dev->exp.aer_log.log_max > 0) { - pci_set_long(dev->config + offset + PCI_ERR_CAP, - PCI_ERR_CAP_ECRC_GENC | PCI_ERR_CAP_ECRC_CHKC | - PCI_ERR_CAP_MHRC); - pci_set_long(dev->wmask + offset + PCI_ERR_CAP, - PCI_ERR_CAP_ECRC_GENE | PCI_ERR_CAP_ECRC_CHKE | - PCI_ERR_CAP_MHRE); - } else { - pci_set_long(dev->config + offset + PCI_ERR_CAP, - PCI_ERR_CAP_ECRC_GENC | PCI_ERR_CAP_ECRC_CHKC); - pci_set_long(dev->wmask + offset + PCI_ERR_CAP, - PCI_ERR_CAP_ECRC_GENE | PCI_ERR_CAP_ECRC_CHKE); - } - - switch (pcie_cap_get_type(dev)) { - case PCI_EXP_TYPE_ROOT_PORT: - /* this case will be set by pcie_aer_root_init() */ - /* fallthrough */ - case PCI_EXP_TYPE_DOWNSTREAM: - case PCI_EXP_TYPE_UPSTREAM: - pci_word_test_and_set_mask(dev->wmask + PCI_BRIDGE_CONTROL, - PCI_BRIDGE_CTL_SERR); - pci_long_test_and_set_mask(dev->w1cmask + PCI_STATUS, - PCI_SEC_STATUS_RCV_SYSTEM_ERROR); - break; - default: - /* nothing */ - break; - } - return 0; -} - -void pcie_aer_exit(PCIDevice *dev) -{ - g_free(dev->exp.aer_log.log); -} - -static void pcie_aer_update_uncor_status(PCIDevice *dev) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - PCIEAERLog *aer_log = &dev->exp.aer_log; - - uint16_t i; - for (i = 0; i < aer_log->log_num; i++) { - pci_long_test_and_set_mask(aer_cap + PCI_ERR_UNCOR_STATUS, - dev->exp.aer_log.log[i].status); - } -} - -/* - * return value: - * true: error message needs to be sent up - * false: error message is masked - * - * 6.2.6 Error Message Control - * Figure 6-3 - * all pci express devices part - */ -static bool -pcie_aer_msg_alldev(PCIDevice *dev, const PCIEAERMsg *msg) -{ - if (!(pcie_aer_msg_is_uncor(msg) && - (pci_get_word(dev->config + PCI_COMMAND) & PCI_COMMAND_SERR))) { - return false; - } - - /* Signaled System Error - * - * 7.5.1.1 Command register - * Bit 8 SERR# Enable - * - * When Set, this bit enables reporting of Non-fatal and Fatal - * errors detected by the Function to the Root Complex. Note that - * errors are reported if enabled either through this bit or through - * the PCI Express specific bits in the Device Control register (see - * Section 7.8.4). - */ - pci_word_test_and_set_mask(dev->config + PCI_STATUS, - PCI_STATUS_SIG_SYSTEM_ERROR); - - if (!(msg->severity & - pci_get_word(dev->config + dev->exp.exp_cap + PCI_EXP_DEVCTL))) { - return false; - } - - /* send up error message */ - return true; -} - -/* - * return value: - * true: error message is sent up - * false: error message is masked - * - * 6.2.6 Error Message Control - * Figure 6-3 - * virtual pci bridge part - */ -static bool pcie_aer_msg_vbridge(PCIDevice *dev, const PCIEAERMsg *msg) -{ - uint16_t bridge_control = pci_get_word(dev->config + PCI_BRIDGE_CONTROL); - - if (pcie_aer_msg_is_uncor(msg)) { - /* Received System Error */ - pci_word_test_and_set_mask(dev->config + PCI_SEC_STATUS, - PCI_SEC_STATUS_RCV_SYSTEM_ERROR); - } - - if (!(bridge_control & PCI_BRIDGE_CTL_SERR)) { - return false; - } - return true; -} - -void pcie_aer_root_set_vector(PCIDevice *dev, unsigned int vector) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - assert(vector < PCI_ERR_ROOT_IRQ_MAX); - pci_long_test_and_clear_mask(aer_cap + PCI_ERR_ROOT_STATUS, - PCI_ERR_ROOT_IRQ); - pci_long_test_and_set_mask(aer_cap + PCI_ERR_ROOT_STATUS, - vector << PCI_ERR_ROOT_IRQ_SHIFT); -} - -static unsigned int pcie_aer_root_get_vector(PCIDevice *dev) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - uint32_t root_status = pci_get_long(aer_cap + PCI_ERR_ROOT_STATUS); - return (root_status & PCI_ERR_ROOT_IRQ) >> PCI_ERR_ROOT_IRQ_SHIFT; -} - -/* Given a status register, get corresponding bits in the command register */ -static uint32_t pcie_aer_status_to_cmd(uint32_t status) -{ - uint32_t cmd = 0; - if (status & PCI_ERR_ROOT_COR_RCV) { - cmd |= PCI_ERR_ROOT_CMD_COR_EN; - } - if (status & PCI_ERR_ROOT_NONFATAL_RCV) { - cmd |= PCI_ERR_ROOT_CMD_NONFATAL_EN; - } - if (status & PCI_ERR_ROOT_FATAL_RCV) { - cmd |= PCI_ERR_ROOT_CMD_FATAL_EN; - } - return cmd; -} - -static void pcie_aer_root_notify(PCIDevice *dev) -{ - if (msix_enabled(dev)) { - msix_notify(dev, pcie_aer_root_get_vector(dev)); - } else if (msi_enabled(dev)) { - msi_notify(dev, pcie_aer_root_get_vector(dev)); - } else { - pci_irq_assert(dev); - } -} - -/* - * 6.2.6 Error Message Control - * Figure 6-3 - * root port part - */ -static void pcie_aer_msg_root_port(PCIDevice *dev, const PCIEAERMsg *msg) -{ - uint16_t cmd; - uint8_t *aer_cap; - uint32_t root_cmd; - uint32_t root_status, prev_status; - - cmd = pci_get_word(dev->config + PCI_COMMAND); - aer_cap = dev->config + dev->exp.aer_cap; - root_cmd = pci_get_long(aer_cap + PCI_ERR_ROOT_COMMAND); - prev_status = root_status = pci_get_long(aer_cap + PCI_ERR_ROOT_STATUS); - - if (cmd & PCI_COMMAND_SERR) { - /* System Error. - * - * The way to report System Error is platform specific and - * it isn't implemented in qemu right now. - * So just discard the error for now. - * OS which cares of aer would receive errors via - * native aer mechanims, so this wouldn't matter. - */ - } - - /* Errro Message Received: Root Error Status register */ - switch (msg->severity) { - case PCI_ERR_ROOT_CMD_COR_EN: - if (root_status & PCI_ERR_ROOT_COR_RCV) { - root_status |= PCI_ERR_ROOT_MULTI_COR_RCV; - } else { - pci_set_word(aer_cap + PCI_ERR_ROOT_ERR_SRC + PCI_ERR_SRC_COR_OFFS, - msg->source_id); - } - root_status |= PCI_ERR_ROOT_COR_RCV; - break; - case PCI_ERR_ROOT_CMD_NONFATAL_EN: - root_status |= PCI_ERR_ROOT_NONFATAL_RCV; - break; - case PCI_ERR_ROOT_CMD_FATAL_EN: - if (!(root_status & PCI_ERR_ROOT_UNCOR_RCV)) { - root_status |= PCI_ERR_ROOT_FIRST_FATAL; - } - root_status |= PCI_ERR_ROOT_FATAL_RCV; - break; - default: - abort(); - break; - } - if (pcie_aer_msg_is_uncor(msg)) { - if (root_status & PCI_ERR_ROOT_UNCOR_RCV) { - root_status |= PCI_ERR_ROOT_MULTI_UNCOR_RCV; - } else { - pci_set_word(aer_cap + PCI_ERR_ROOT_ERR_SRC + - PCI_ERR_SRC_UNCOR_OFFS, msg->source_id); - } - root_status |= PCI_ERR_ROOT_UNCOR_RCV; - } - pci_set_long(aer_cap + PCI_ERR_ROOT_STATUS, root_status); - - /* 6.2.4.1.2 Interrupt Generation */ - /* All the above did was set some bits in the status register. - * Specifically these that match message severity. - * The below code relies on this fact. */ - if (!(root_cmd & msg->severity) || - (pcie_aer_status_to_cmd(prev_status) & root_cmd)) { - /* Condition is not being set or was already true so nothing to do. */ - return; - } - - pcie_aer_root_notify(dev); -} - -/* - * 6.2.6 Error Message Control Figure 6-3 - * - * Walk up the bus tree from the device, propagate the error message. - */ -void pcie_aer_msg(PCIDevice *dev, const PCIEAERMsg *msg) -{ - uint8_t type; - - while (dev) { - if (!pci_is_express(dev)) { - /* just ignore it */ - /* TODO: Shouldn't we set PCI_STATUS_SIG_SYSTEM_ERROR? - * Consider e.g. a PCI bridge above a PCI Express device. */ - return; - } - - type = pcie_cap_get_type(dev); - if ((type == PCI_EXP_TYPE_ROOT_PORT || - type == PCI_EXP_TYPE_UPSTREAM || - type == PCI_EXP_TYPE_DOWNSTREAM) && - !pcie_aer_msg_vbridge(dev, msg)) { - return; - } - if (!pcie_aer_msg_alldev(dev, msg)) { - return; - } - if (type == PCI_EXP_TYPE_ROOT_PORT) { - pcie_aer_msg_root_port(dev, msg); - /* Root port can notify system itself, - or send the error message to root complex event collector. */ - /* - * if root port is associated with an event collector, - * return the root complex event collector here. - * For now root complex event collector isn't supported. - */ - return; - } - dev = pci_bridge_get_device(dev->bus); - } -} - -static void pcie_aer_update_log(PCIDevice *dev, const PCIEAERErr *err) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - uint8_t first_bit = ctz32(err->status); - uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP); - int i; - - assert(err->status); - assert(!(err->status & (err->status - 1))); - - errcap &= ~(PCI_ERR_CAP_FEP_MASK | PCI_ERR_CAP_TLP); - errcap |= PCI_ERR_CAP_FEP(first_bit); - - if (err->flags & PCIE_AER_ERR_HEADER_VALID) { - for (i = 0; i < ARRAY_SIZE(err->header); ++i) { - /* 7.10.8 Header Log Register */ - uint8_t *header_log = - aer_cap + PCI_ERR_HEADER_LOG + i * sizeof err->header[0]; - stl_be_p(header_log, err->header[i]); - } - } else { - assert(!(err->flags & PCIE_AER_ERR_TLP_PREFIX_PRESENT)); - memset(aer_cap + PCI_ERR_HEADER_LOG, 0, PCI_ERR_HEADER_LOG_SIZE); - } - - if ((err->flags & PCIE_AER_ERR_TLP_PREFIX_PRESENT) && - (pci_get_long(dev->config + dev->exp.exp_cap + PCI_EXP_DEVCAP2) & - PCI_EXP_DEVCAP2_EETLPP)) { - for (i = 0; i < ARRAY_SIZE(err->prefix); ++i) { - /* 7.10.12 tlp prefix log register */ - uint8_t *prefix_log = - aer_cap + PCI_ERR_TLP_PREFIX_LOG + i * sizeof err->prefix[0]; - stl_be_p(prefix_log, err->prefix[i]); - } - errcap |= PCI_ERR_CAP_TLP; - } else { - memset(aer_cap + PCI_ERR_TLP_PREFIX_LOG, 0, - PCI_ERR_TLP_PREFIX_LOG_SIZE); - } - pci_set_long(aer_cap + PCI_ERR_CAP, errcap); -} - -static void pcie_aer_clear_log(PCIDevice *dev) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - - pci_long_test_and_clear_mask(aer_cap + PCI_ERR_CAP, - PCI_ERR_CAP_FEP_MASK | PCI_ERR_CAP_TLP); - - memset(aer_cap + PCI_ERR_HEADER_LOG, 0, PCI_ERR_HEADER_LOG_SIZE); - memset(aer_cap + PCI_ERR_TLP_PREFIX_LOG, 0, PCI_ERR_TLP_PREFIX_LOG_SIZE); -} - -static void pcie_aer_clear_error(PCIDevice *dev) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP); - PCIEAERLog *aer_log = &dev->exp.aer_log; - PCIEAERErr err; - - if (!(errcap & PCI_ERR_CAP_MHRE) || !aer_log->log_num) { - pcie_aer_clear_log(dev); - return; - } - - /* - * If more errors are queued, set corresponding bits in uncorrectable - * error status. - * We emulate uncorrectable error status register as W1CS. - * So set bit in uncorrectable error status here again for multiple - * error recording support. - * - * 6.2.4.2 Multiple Error Handling(Advanced Error Reporting Capability) - */ - pcie_aer_update_uncor_status(dev); - - aer_log_del_err(aer_log, &err); - pcie_aer_update_log(dev, &err); -} - -static int pcie_aer_record_error(PCIDevice *dev, - const PCIEAERErr *err) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP); - int fep = PCI_ERR_CAP_FEP(errcap); - - assert(err->status); - assert(!(err->status & (err->status - 1))); - - if (errcap & PCI_ERR_CAP_MHRE && - (pci_get_long(aer_cap + PCI_ERR_UNCOR_STATUS) & (1U << fep))) { - /* Not first error. queue error */ - if (aer_log_add_err(&dev->exp.aer_log, err) < 0) { - /* overflow */ - return -1; - } - return 0; - } - - pcie_aer_update_log(dev, err); - return 0; -} - -typedef struct PCIEAERInject { - PCIDevice *dev; - uint8_t *aer_cap; - const PCIEAERErr *err; - uint16_t devctl; - uint16_t devsta; - uint32_t error_status; - bool unsupported_request; - bool log_overflow; - PCIEAERMsg msg; -} PCIEAERInject; - -static bool pcie_aer_inject_cor_error(PCIEAERInject *inj, - uint32_t uncor_status, - bool is_advisory_nonfatal) -{ - PCIDevice *dev = inj->dev; - - inj->devsta |= PCI_EXP_DEVSTA_CED; - if (inj->unsupported_request) { - inj->devsta |= PCI_EXP_DEVSTA_URD; - } - pci_set_word(dev->config + dev->exp.exp_cap + PCI_EXP_DEVSTA, inj->devsta); - - if (inj->aer_cap) { - uint32_t mask; - pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_COR_STATUS, - inj->error_status); - mask = pci_get_long(inj->aer_cap + PCI_ERR_COR_MASK); - if (mask & inj->error_status) { - return false; - } - if (is_advisory_nonfatal) { - uint32_t uncor_mask = - pci_get_long(inj->aer_cap + PCI_ERR_UNCOR_MASK); - if (!(uncor_mask & uncor_status)) { - inj->log_overflow = !!pcie_aer_record_error(dev, inj->err); - } - pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_UNCOR_STATUS, - uncor_status); - } - } - - if (inj->unsupported_request && !(inj->devctl & PCI_EXP_DEVCTL_URRE)) { - return false; - } - if (!(inj->devctl & PCI_EXP_DEVCTL_CERE)) { - return false; - } - - inj->msg.severity = PCI_ERR_ROOT_CMD_COR_EN; - return true; -} - -static bool pcie_aer_inject_uncor_error(PCIEAERInject *inj, bool is_fatal) -{ - PCIDevice *dev = inj->dev; - uint16_t cmd; - - if (is_fatal) { - inj->devsta |= PCI_EXP_DEVSTA_FED; - } else { - inj->devsta |= PCI_EXP_DEVSTA_NFED; - } - if (inj->unsupported_request) { - inj->devsta |= PCI_EXP_DEVSTA_URD; - } - pci_set_long(dev->config + dev->exp.exp_cap + PCI_EXP_DEVSTA, inj->devsta); - - if (inj->aer_cap) { - uint32_t mask = pci_get_long(inj->aer_cap + PCI_ERR_UNCOR_MASK); - if (mask & inj->error_status) { - pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_UNCOR_STATUS, - inj->error_status); - return false; - } - - inj->log_overflow = !!pcie_aer_record_error(dev, inj->err); - pci_long_test_and_set_mask(inj->aer_cap + PCI_ERR_UNCOR_STATUS, - inj->error_status); - } - - cmd = pci_get_word(dev->config + PCI_COMMAND); - if (inj->unsupported_request && - !(inj->devctl & PCI_EXP_DEVCTL_URRE) && !(cmd & PCI_COMMAND_SERR)) { - return false; - } - if (is_fatal) { - if (!((cmd & PCI_COMMAND_SERR) || - (inj->devctl & PCI_EXP_DEVCTL_FERE))) { - return false; - } - inj->msg.severity = PCI_ERR_ROOT_CMD_FATAL_EN; - } else { - if (!((cmd & PCI_COMMAND_SERR) || - (inj->devctl & PCI_EXP_DEVCTL_NFERE))) { - return false; - } - inj->msg.severity = PCI_ERR_ROOT_CMD_NONFATAL_EN; - } - return true; -} - -/* - * non-Function specific error must be recorded in all functions. - * It is the responsibility of the caller of this function. - * It is also caller's responsibility to determine which function should - * report the error. - * - * 6.2.4 Error Logging - * 6.2.5 Sequence of Device Error Signaling and Logging Operations - * Figure 6-2: Flowchart Showing Sequence of Device Error Signaling and Logging - * Operations - */ -int pcie_aer_inject_error(PCIDevice *dev, const PCIEAERErr *err) -{ - uint8_t *aer_cap = NULL; - uint16_t devctl = 0; - uint16_t devsta = 0; - uint32_t error_status = err->status; - PCIEAERInject inj; - - if (!pci_is_express(dev)) { - return -ENOSYS; - } - - if (err->flags & PCIE_AER_ERR_IS_CORRECTABLE) { - error_status &= PCI_ERR_COR_SUPPORTED; - } else { - error_status &= PCI_ERR_UNC_SUPPORTED; - } - - /* invalid status bit. one and only one bit must be set */ - if (!error_status || (error_status & (error_status - 1))) { - return -EINVAL; - } - - if (dev->exp.aer_cap) { - uint8_t *exp_cap = dev->config + dev->exp.exp_cap; - aer_cap = dev->config + dev->exp.aer_cap; - devctl = pci_get_long(exp_cap + PCI_EXP_DEVCTL); - devsta = pci_get_long(exp_cap + PCI_EXP_DEVSTA); - } - - inj.dev = dev; - inj.aer_cap = aer_cap; - inj.err = err; - inj.devctl = devctl; - inj.devsta = devsta; - inj.error_status = error_status; - inj.unsupported_request = !(err->flags & PCIE_AER_ERR_IS_CORRECTABLE) && - err->status == PCI_ERR_UNC_UNSUP; - inj.log_overflow = false; - - if (err->flags & PCIE_AER_ERR_IS_CORRECTABLE) { - if (!pcie_aer_inject_cor_error(&inj, 0, false)) { - return 0; - } - } else { - bool is_fatal = - pcie_aer_uncor_default_severity(error_status) == - PCI_ERR_ROOT_CMD_FATAL_EN; - if (aer_cap) { - is_fatal = - error_status & pci_get_long(aer_cap + PCI_ERR_UNCOR_SEVER); - } - if (!is_fatal && (err->flags & PCIE_AER_ERR_MAYBE_ADVISORY)) { - inj.error_status = PCI_ERR_COR_ADV_NONFATAL; - if (!pcie_aer_inject_cor_error(&inj, error_status, true)) { - return 0; - } - } else { - if (!pcie_aer_inject_uncor_error(&inj, is_fatal)) { - return 0; - } - } - } - - /* send up error message */ - inj.msg.source_id = err->source_id; - pcie_aer_msg(dev, &inj.msg); - - if (inj.log_overflow) { - PCIEAERErr header_log_overflow = { - .status = PCI_ERR_COR_HL_OVERFLOW, - .flags = PCIE_AER_ERR_IS_CORRECTABLE, - }; - int ret = pcie_aer_inject_error(dev, &header_log_overflow); - assert(!ret); - } - return 0; -} - -void pcie_aer_write_config(PCIDevice *dev, - uint32_t addr, uint32_t val, int len) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - uint32_t errcap = pci_get_long(aer_cap + PCI_ERR_CAP); - uint32_t first_error = 1U << PCI_ERR_CAP_FEP(errcap); - uint32_t uncorsta = pci_get_long(aer_cap + PCI_ERR_UNCOR_STATUS); - - /* uncorrectable error */ - if (!(uncorsta & first_error)) { - /* the bit that corresponds to the first error is cleared */ - pcie_aer_clear_error(dev); - } else if (errcap & PCI_ERR_CAP_MHRE) { - /* When PCI_ERR_CAP_MHRE is enabled and the first error isn't cleared - * nothing should happen. So we have to revert the modification to - * the register. - */ - pcie_aer_update_uncor_status(dev); - } else { - /* capability & control - * PCI_ERR_CAP_MHRE might be cleared, so clear of header log. - */ - aer_log_clear_all_err(&dev->exp.aer_log); - } -} - -void pcie_aer_root_init(PCIDevice *dev) -{ - uint16_t pos = dev->exp.aer_cap; - - pci_set_long(dev->wmask + pos + PCI_ERR_ROOT_COMMAND, - PCI_ERR_ROOT_CMD_EN_MASK); - pci_set_long(dev->w1cmask + pos + PCI_ERR_ROOT_STATUS, - PCI_ERR_ROOT_STATUS_REPORT_MASK); - /* PCI_ERR_ROOT_IRQ is RO but devices change it using a - * device-specific method. - */ - pci_set_long(dev->cmask + pos + PCI_ERR_ROOT_STATUS, - ~PCI_ERR_ROOT_IRQ); -} - -void pcie_aer_root_reset(PCIDevice *dev) -{ - uint8_t* aer_cap = dev->config + dev->exp.aer_cap; - - pci_set_long(aer_cap + PCI_ERR_ROOT_COMMAND, 0); - - /* - * Advanced Error Interrupt Message Number in Root Error Status Register - * must be updated by chip dependent code because it's chip dependent - * which number is used. - */ -} - -void pcie_aer_root_write_config(PCIDevice *dev, - uint32_t addr, uint32_t val, int len, - uint32_t root_cmd_prev) -{ - uint8_t *aer_cap = dev->config + dev->exp.aer_cap; - uint32_t root_status = pci_get_long(aer_cap + PCI_ERR_ROOT_STATUS); - uint32_t enabled_cmd = pcie_aer_status_to_cmd(root_status); - uint32_t root_cmd = pci_get_long(aer_cap + PCI_ERR_ROOT_COMMAND); - /* 6.2.4.1.2 Interrupt Generation */ - if (!msix_enabled(dev) && !msi_enabled(dev)) { - pci_set_irq(dev, !!(root_cmd & enabled_cmd)); - return; - } - - if ((root_cmd_prev & enabled_cmd) || !(root_cmd & enabled_cmd)) { - /* Send MSI on transition from false to true. */ - return; - } - - pcie_aer_root_notify(dev); -} - -static const VMStateDescription vmstate_pcie_aer_err = { - .name = "PCIE_AER_ERROR", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32(status, PCIEAERErr), - VMSTATE_UINT16(source_id, PCIEAERErr), - VMSTATE_UINT16(flags, PCIEAERErr), - VMSTATE_UINT32_ARRAY(header, PCIEAERErr, 4), - VMSTATE_UINT32_ARRAY(prefix, PCIEAERErr, 4), - VMSTATE_END_OF_LIST() - } -}; - -static bool pcie_aer_state_log_num_valid(void *opaque, int version_id) -{ - PCIEAERLog *s = opaque; - - return s->log_num <= s->log_max; -} - -const VMStateDescription vmstate_pcie_aer_log = { - .name = "PCIE_AER_ERROR_LOG", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT16(log_num, PCIEAERLog), - VMSTATE_UINT16_EQUAL(log_max, PCIEAERLog), - VMSTATE_VALIDATE("log_num <= log_max", pcie_aer_state_log_num_valid), - VMSTATE_STRUCT_VARRAY_POINTER_UINT16(log, PCIEAERLog, log_num, - vmstate_pcie_aer_err, PCIEAERErr), - VMSTATE_END_OF_LIST() - } -}; - -typedef struct PCIEAERErrorName { - const char *name; - uint32_t val; - bool correctable; -} PCIEAERErrorName; - -/* - * AER error name -> value conversion table - * This naming scheme is same to linux aer-injection tool. - */ -static const struct PCIEAERErrorName pcie_aer_error_list[] = { - { - .name = "DLP", - .val = PCI_ERR_UNC_DLP, - .correctable = false, - }, { - .name = "SDN", - .val = PCI_ERR_UNC_SDN, - .correctable = false, - }, { - .name = "POISON_TLP", - .val = PCI_ERR_UNC_POISON_TLP, - .correctable = false, - }, { - .name = "FCP", - .val = PCI_ERR_UNC_FCP, - .correctable = false, - }, { - .name = "COMP_TIME", - .val = PCI_ERR_UNC_COMP_TIME, - .correctable = false, - }, { - .name = "COMP_ABORT", - .val = PCI_ERR_UNC_COMP_ABORT, - .correctable = false, - }, { - .name = "UNX_COMP", - .val = PCI_ERR_UNC_UNX_COMP, - .correctable = false, - }, { - .name = "RX_OVER", - .val = PCI_ERR_UNC_RX_OVER, - .correctable = false, - }, { - .name = "MALF_TLP", - .val = PCI_ERR_UNC_MALF_TLP, - .correctable = false, - }, { - .name = "ECRC", - .val = PCI_ERR_UNC_ECRC, - .correctable = false, - }, { - .name = "UNSUP", - .val = PCI_ERR_UNC_UNSUP, - .correctable = false, - }, { - .name = "ACSV", - .val = PCI_ERR_UNC_ACSV, - .correctable = false, - }, { - .name = "INTN", - .val = PCI_ERR_UNC_INTN, - .correctable = false, - }, { - .name = "MCBTLP", - .val = PCI_ERR_UNC_MCBTLP, - .correctable = false, - }, { - .name = "ATOP_EBLOCKED", - .val = PCI_ERR_UNC_ATOP_EBLOCKED, - .correctable = false, - }, { - .name = "TLP_PRF_BLOCKED", - .val = PCI_ERR_UNC_TLP_PRF_BLOCKED, - .correctable = false, - }, { - .name = "RCVR", - .val = PCI_ERR_COR_RCVR, - .correctable = true, - }, { - .name = "BAD_TLP", - .val = PCI_ERR_COR_BAD_TLP, - .correctable = true, - }, { - .name = "BAD_DLLP", - .val = PCI_ERR_COR_BAD_DLLP, - .correctable = true, - }, { - .name = "REP_ROLL", - .val = PCI_ERR_COR_REP_ROLL, - .correctable = true, - }, { - .name = "REP_TIMER", - .val = PCI_ERR_COR_REP_TIMER, - .correctable = true, - }, { - .name = "ADV_NONFATAL", - .val = PCI_ERR_COR_ADV_NONFATAL, - .correctable = true, - }, { - .name = "INTERNAL", - .val = PCI_ERR_COR_INTERNAL, - .correctable = true, - }, { - .name = "HL_OVERFLOW", - .val = PCI_ERR_COR_HL_OVERFLOW, - .correctable = true, - }, -}; - -static int pcie_aer_parse_error_string(const char *error_name, - uint32_t *status, bool *correctable) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(pcie_aer_error_list); i++) { - const PCIEAERErrorName *e = &pcie_aer_error_list[i]; - if (strcmp(error_name, e->name)) { - continue; - } - - *status = e->val; - *correctable = e->correctable; - return 0; - } - return -EINVAL; -} - -static int do_pcie_aer_inject_error(Monitor *mon, - const QDict *qdict, QObject **ret_data) -{ - const char *id = qdict_get_str(qdict, "id"); - const char *error_name; - uint32_t error_status; - bool correctable; - PCIDevice *dev; - PCIEAERErr err; - int ret; - - ret = pci_qdev_find_device(id, &dev); - if (ret < 0) { - monitor_printf(mon, - "id or pci device path is invalid or device not " - "found. %s\n", id); - return ret; - } - if (!pci_is_express(dev)) { - monitor_printf(mon, "the device doesn't support pci express. %s\n", - id); - return -ENOSYS; - } - - error_name = qdict_get_str(qdict, "error_status"); - if (pcie_aer_parse_error_string(error_name, &error_status, &correctable)) { - char *e = NULL; - error_status = strtoul(error_name, &e, 0); - correctable = qdict_get_try_bool(qdict, "correctable", false); - if (!e || *e != '\0') { - monitor_printf(mon, "invalid error status value. \"%s\"", - error_name); - return -EINVAL; - } - } - err.status = error_status; - err.source_id = pci_requester_id(dev); - - err.flags = 0; - if (correctable) { - err.flags |= PCIE_AER_ERR_IS_CORRECTABLE; - } - if (qdict_get_try_bool(qdict, "advisory_non_fatal", false)) { - err.flags |= PCIE_AER_ERR_MAYBE_ADVISORY; - } - if (qdict_haskey(qdict, "header0")) { - err.flags |= PCIE_AER_ERR_HEADER_VALID; - } - if (qdict_haskey(qdict, "prefix0")) { - err.flags |= PCIE_AER_ERR_TLP_PREFIX_PRESENT; - } - - err.header[0] = qdict_get_try_int(qdict, "header0", 0); - err.header[1] = qdict_get_try_int(qdict, "header1", 0); - err.header[2] = qdict_get_try_int(qdict, "header2", 0); - err.header[3] = qdict_get_try_int(qdict, "header3", 0); - - err.prefix[0] = qdict_get_try_int(qdict, "prefix0", 0); - err.prefix[1] = qdict_get_try_int(qdict, "prefix1", 0); - err.prefix[2] = qdict_get_try_int(qdict, "prefix2", 0); - err.prefix[3] = qdict_get_try_int(qdict, "prefix3", 0); - - ret = pcie_aer_inject_error(dev, &err); - *ret_data = qobject_from_jsonf("{'id': %s, " - "'root_bus': %s, 'bus': %d, 'devfn': %d, " - "'ret': %d}", - id, pci_root_bus_path(dev), - pci_bus_num(dev->bus), dev->devfn, - ret); - assert(*ret_data); - - return 0; -} - -void hmp_pcie_aer_inject_error(Monitor *mon, const QDict *qdict) -{ - QObject *data; - int devfn; - - if (do_pcie_aer_inject_error(mon, qdict, &data) < 0) { - return; - } - - assert(qobject_type(data) == QTYPE_QDICT); - qdict = qobject_to_qdict(data); - - devfn = (int)qdict_get_int(qdict, "devfn"); - monitor_printf(mon, "OK id: %s root bus: %s, bus: %x devfn: %x.%x\n", - qdict_get_str(qdict, "id"), - qdict_get_str(qdict, "root_bus"), - (int) qdict_get_int(qdict, "bus"), - PCI_SLOT(devfn), PCI_FUNC(devfn)); -} diff --git a/qemu/hw/pci/pcie_host.c b/qemu/hw/pci/pcie_host.c deleted file mode 100644 index dcebf57ed..000000000 --- a/qemu/hw/pci/pcie_host.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * pcie_host.c - * utility functions for pci express host bridge. - * - * Copyright (c) 2009 Isaku Yamahata - * VA Linux Systems Japan K.K. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "hw/hw.h" -#include "hw/pci/pci.h" -#include "hw/pci/pcie_host.h" -#include "exec/address-spaces.h" - -/* a helper function to get a PCIDevice for a given mmconfig address */ -static inline PCIDevice *pcie_dev_find_by_mmcfg_addr(PCIBus *s, - uint32_t mmcfg_addr) -{ - return pci_find_device(s, PCIE_MMCFG_BUS(mmcfg_addr), - PCIE_MMCFG_DEVFN(mmcfg_addr)); -} - -static void pcie_mmcfg_data_write(void *opaque, hwaddr mmcfg_addr, - uint64_t val, unsigned len) -{ - PCIExpressHost *e = opaque; - PCIBus *s = e->pci.bus; - PCIDevice *pci_dev = pcie_dev_find_by_mmcfg_addr(s, mmcfg_addr); - uint32_t addr; - uint32_t limit; - - if (!pci_dev) { - return; - } - addr = PCIE_MMCFG_CONFOFFSET(mmcfg_addr); - limit = pci_config_size(pci_dev); - if (limit <= addr) { - /* conventional pci device can be behind pcie-to-pci bridge. - 256 <= addr < 4K has no effects. */ - return; - } - pci_host_config_write_common(pci_dev, addr, limit, val, len); -} - -static uint64_t pcie_mmcfg_data_read(void *opaque, - hwaddr mmcfg_addr, - unsigned len) -{ - PCIExpressHost *e = opaque; - PCIBus *s = e->pci.bus; - PCIDevice *pci_dev = pcie_dev_find_by_mmcfg_addr(s, mmcfg_addr); - uint32_t addr; - uint32_t limit; - - if (!pci_dev) { - return ~0x0; - } - addr = PCIE_MMCFG_CONFOFFSET(mmcfg_addr); - limit = pci_config_size(pci_dev); - if (limit <= addr) { - /* conventional pci device can be behind pcie-to-pci bridge. - 256 <= addr < 4K has no effects. */ - return ~0x0; - } - return pci_host_config_read_common(pci_dev, addr, limit, len); -} - -static const MemoryRegionOps pcie_mmcfg_ops = { - .read = pcie_mmcfg_data_read, - .write = pcie_mmcfg_data_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void pcie_host_init(Object *obj) -{ - PCIExpressHost *e = PCIE_HOST_BRIDGE(obj); - - e->base_addr = PCIE_BASE_ADDR_UNMAPPED; - memory_region_init_io(&e->mmio, OBJECT(e), &pcie_mmcfg_ops, e, "pcie-mmcfg-mmio", - PCIE_MMCFG_SIZE_MAX); -} - -void pcie_host_mmcfg_unmap(PCIExpressHost *e) -{ - if (e->base_addr != PCIE_BASE_ADDR_UNMAPPED) { - memory_region_del_subregion(get_system_memory(), &e->mmio); - e->base_addr = PCIE_BASE_ADDR_UNMAPPED; - } -} - -void pcie_host_mmcfg_init(PCIExpressHost *e, uint32_t size) -{ - assert(!(size & (size - 1))); /* power of 2 */ - assert(size >= PCIE_MMCFG_SIZE_MIN); - assert(size <= PCIE_MMCFG_SIZE_MAX); - e->size = size; - memory_region_set_size(&e->mmio, e->size); -} - -void pcie_host_mmcfg_map(PCIExpressHost *e, hwaddr addr, - uint32_t size) -{ - pcie_host_mmcfg_init(e, size); - e->base_addr = addr; - memory_region_add_subregion(get_system_memory(), e->base_addr, &e->mmio); -} - -void pcie_host_mmcfg_update(PCIExpressHost *e, - int enable, - hwaddr addr, - uint32_t size) -{ - memory_region_transaction_begin(); - pcie_host_mmcfg_unmap(e); - if (enable) { - pcie_host_mmcfg_map(e, addr, size); - } - memory_region_transaction_commit(); -} - -static const TypeInfo pcie_host_type_info = { - .name = TYPE_PCIE_HOST_BRIDGE, - .parent = TYPE_PCI_HOST_BRIDGE, - .abstract = true, - .instance_size = sizeof(PCIExpressHost), - .instance_init = pcie_host_init, -}; - -static void pcie_host_register_types(void) -{ - type_register_static(&pcie_host_type_info); -} - -type_init(pcie_host_register_types) diff --git a/qemu/hw/pci/pcie_port.c b/qemu/hw/pci/pcie_port.c deleted file mode 100644 index 6432b9ac1..000000000 --- a/qemu/hw/pci/pcie_port.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * pcie_port.c - * - * Copyright (c) 2010 Isaku Yamahata - * VA Linux Systems Japan K.K. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "hw/pci/pcie_port.h" -#include "hw/hotplug.h" - -void pcie_port_init_reg(PCIDevice *d) -{ - /* Unlike pci bridge, - 66MHz and fast back to back don't apply to pci express port. */ - pci_set_word(d->config + PCI_STATUS, 0); - pci_set_word(d->config + PCI_SEC_STATUS, 0); - - /* - * Unlike conventional pci bridge, for some bits the spec states: - * Does not apply to PCI Express and must be hardwired to 0. - */ - pci_word_test_and_clear_mask(d->wmask + PCI_BRIDGE_CONTROL, - PCI_BRIDGE_CTL_MASTER_ABORT | - PCI_BRIDGE_CTL_FAST_BACK | - PCI_BRIDGE_CTL_DISCARD | - PCI_BRIDGE_CTL_SEC_DISCARD | - PCI_BRIDGE_CTL_DISCARD_STATUS | - PCI_BRIDGE_CTL_DISCARD_SERR); -} - -/************************************************************************** - * (chassis number, pcie physical slot number) -> pcie slot conversion - */ -struct PCIEChassis { - uint8_t number; - - QLIST_HEAD(, PCIESlot) slots; - QLIST_ENTRY(PCIEChassis) next; -}; - -static QLIST_HEAD(, PCIEChassis) chassis = QLIST_HEAD_INITIALIZER(chassis); - -static struct PCIEChassis *pcie_chassis_find(uint8_t chassis_number) -{ - struct PCIEChassis *c; - QLIST_FOREACH(c, &chassis, next) { - if (c->number == chassis_number) { - break; - } - } - return c; -} - -void pcie_chassis_create(uint8_t chassis_number) -{ - struct PCIEChassis *c; - c = pcie_chassis_find(chassis_number); - if (c) { - return; - } - c = g_malloc0(sizeof(*c)); - c->number = chassis_number; - QLIST_INIT(&c->slots); - QLIST_INSERT_HEAD(&chassis, c, next); -} - -static PCIESlot *pcie_chassis_find_slot_with_chassis(struct PCIEChassis *c, - uint8_t slot) -{ - PCIESlot *s; - QLIST_FOREACH(s, &c->slots, next) { - if (s->slot == slot) { - break; - } - } - return s; -} - -PCIESlot *pcie_chassis_find_slot(uint8_t chassis_number, uint16_t slot) -{ - struct PCIEChassis *c; - c = pcie_chassis_find(chassis_number); - if (!c) { - return NULL; - } - return pcie_chassis_find_slot_with_chassis(c, slot); -} - -int pcie_chassis_add_slot(struct PCIESlot *slot) -{ - struct PCIEChassis *c; - c = pcie_chassis_find(slot->chassis); - if (!c) { - return -ENODEV; - } - if (pcie_chassis_find_slot_with_chassis(c, slot->slot)) { - return -EBUSY; - } - QLIST_INSERT_HEAD(&c->slots, slot, next); - return 0; -} - -void pcie_chassis_del_slot(PCIESlot *s) -{ - QLIST_REMOVE(s, next); -} - -static Property pcie_port_props[] = { - DEFINE_PROP_UINT8("port", PCIEPort, port, 0), - DEFINE_PROP_UINT16("aer_log_max", PCIEPort, - parent_obj.parent_obj.exp.aer_log.log_max, - PCIE_AER_LOG_MAX_DEFAULT), - DEFINE_PROP_END_OF_LIST() -}; - -static void pcie_port_class_init(ObjectClass *oc, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(oc); - - dc->props = pcie_port_props; -} - -static const TypeInfo pcie_port_type_info = { - .name = TYPE_PCIE_PORT, - .parent = TYPE_PCI_BRIDGE, - .instance_size = sizeof(PCIEPort), - .abstract = true, - .class_init = pcie_port_class_init, -}; - -static Property pcie_slot_props[] = { - DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0), - DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0), - DEFINE_PROP_END_OF_LIST() -}; - -static void pcie_slot_class_init(ObjectClass *oc, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(oc); - HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); - - dc->props = pcie_slot_props; - hc->plug = pcie_cap_slot_hotplug_cb; - hc->unplug_request = pcie_cap_slot_hot_unplug_request_cb; -} - -static const TypeInfo pcie_slot_type_info = { - .name = TYPE_PCIE_SLOT, - .parent = TYPE_PCIE_PORT, - .instance_size = sizeof(PCIESlot), - .abstract = true, - .class_init = pcie_slot_class_init, - .interfaces = (InterfaceInfo[]) { - { TYPE_HOTPLUG_HANDLER }, - { } - } -}; - -static void pcie_port_register_types(void) -{ - type_register_static(&pcie_port_type_info); - type_register_static(&pcie_slot_type_info); -} - -type_init(pcie_port_register_types) diff --git a/qemu/hw/pci/shpc.c b/qemu/hw/pci/shpc.c deleted file mode 100644 index 3dcd472eb..000000000 --- a/qemu/hw/pci/shpc.c +++ /dev/null @@ -1,721 +0,0 @@ -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "qemu-common.h" -#include "qemu/range.h" -#include "qemu/error-report.h" -#include "hw/pci/shpc.h" -#include "hw/pci/pci.h" -#include "hw/pci/pci_bus.h" -#include "hw/pci/msi.h" - -/* TODO: model power only and disabled slot states. */ -/* TODO: handle SERR and wakeups */ -/* TODO: consider enabling 66MHz support */ - -/* TODO: remove fully only on state DISABLED and LED off. - * track state to properly record this. */ - -/* SHPC Working Register Set */ -#define SHPC_BASE_OFFSET 0x00 /* 4 bytes */ -#define SHPC_SLOTS_33 0x04 /* 4 bytes. Also encodes PCI-X slots. */ -#define SHPC_SLOTS_66 0x08 /* 4 bytes. */ -#define SHPC_NSLOTS 0x0C /* 1 byte */ -#define SHPC_FIRST_DEV 0x0D /* 1 byte */ -#define SHPC_PHYS_SLOT 0x0E /* 2 byte */ -#define SHPC_PHYS_NUM_MAX 0x7ff -#define SHPC_PHYS_NUM_UP 0x2000 -#define SHPC_PHYS_MRL 0x4000 -#define SHPC_PHYS_BUTTON 0x8000 -#define SHPC_SEC_BUS 0x10 /* 2 bytes */ -#define SHPC_SEC_BUS_33 0x0 -#define SHPC_SEC_BUS_66 0x1 /* Unused */ -#define SHPC_SEC_BUS_MASK 0x7 -#define SHPC_MSI_CTL 0x12 /* 1 byte */ -#define SHPC_PROG_IFC 0x13 /* 1 byte */ -#define SHPC_PROG_IFC_1_0 0x1 -#define SHPC_CMD_CODE 0x14 /* 1 byte */ -#define SHPC_CMD_TRGT 0x15 /* 1 byte */ -#define SHPC_CMD_TRGT_MIN 0x1 -#define SHPC_CMD_TRGT_MAX 0x1f -#define SHPC_CMD_STATUS 0x16 /* 2 bytes */ -#define SHPC_CMD_STATUS_BUSY 0x1 -#define SHPC_CMD_STATUS_MRL_OPEN 0x2 -#define SHPC_CMD_STATUS_INVALID_CMD 0x4 -#define SHPC_CMD_STATUS_INVALID_MODE 0x8 -#define SHPC_INT_LOCATOR 0x18 /* 4 bytes */ -#define SHPC_INT_COMMAND 0x1 -#define SHPC_SERR_LOCATOR 0x1C /* 4 bytes */ -#define SHPC_SERR_INT 0x20 /* 4 bytes */ -#define SHPC_INT_DIS 0x1 -#define SHPC_SERR_DIS 0x2 -#define SHPC_CMD_INT_DIS 0x4 -#define SHPC_ARB_SERR_DIS 0x8 -#define SHPC_CMD_DETECTED 0x10000 -#define SHPC_ARB_DETECTED 0x20000 - /* 4 bytes * slot # (start from 0) */ -#define SHPC_SLOT_REG(s) (0x24 + (s) * 4) - /* 2 bytes */ -#define SHPC_SLOT_STATUS(s) (0x0 + SHPC_SLOT_REG(s)) - -/* Same slot state masks are used for command and status registers */ -#define SHPC_SLOT_STATE_MASK 0x03 -#define SHPC_SLOT_STATE_SHIFT \ - ctz32(SHPC_SLOT_STATE_MASK) - -#define SHPC_STATE_NO 0x0 -#define SHPC_STATE_PWRONLY 0x1 -#define SHPC_STATE_ENABLED 0x2 -#define SHPC_STATE_DISABLED 0x3 - -#define SHPC_SLOT_PWR_LED_MASK 0xC -#define SHPC_SLOT_PWR_LED_SHIFT \ - ctz32(SHPC_SLOT_PWR_LED_MASK) -#define SHPC_SLOT_ATTN_LED_MASK 0x30 -#define SHPC_SLOT_ATTN_LED_SHIFT \ - ctz32(SHPC_SLOT_ATTN_LED_MASK) - -#define SHPC_LED_NO 0x0 -#define SHPC_LED_ON 0x1 -#define SHPC_LED_BLINK 0x2 -#define SHPC_LED_OFF 0x3 - -#define SHPC_SLOT_STATUS_PWR_FAULT 0x40 -#define SHPC_SLOT_STATUS_BUTTON 0x80 -#define SHPC_SLOT_STATUS_MRL_OPEN 0x100 -#define SHPC_SLOT_STATUS_66 0x200 -#define SHPC_SLOT_STATUS_PRSNT_MASK 0xC00 -#define SHPC_SLOT_STATUS_PRSNT_EMPTY 0x3 -#define SHPC_SLOT_STATUS_PRSNT_25W 0x1 -#define SHPC_SLOT_STATUS_PRSNT_15W 0x2 -#define SHPC_SLOT_STATUS_PRSNT_7_5W 0x0 - -#define SHPC_SLOT_STATUS_PRSNT_PCIX 0x3000 - - - /* 1 byte */ -#define SHPC_SLOT_EVENT_LATCH(s) (0x2 + SHPC_SLOT_REG(s)) - /* 1 byte */ -#define SHPC_SLOT_EVENT_SERR_INT_DIS(d, s) (0x3 + SHPC_SLOT_REG(s)) -#define SHPC_SLOT_EVENT_PRESENCE 0x01 -#define SHPC_SLOT_EVENT_ISOLATED_FAULT 0x02 -#define SHPC_SLOT_EVENT_BUTTON 0x04 -#define SHPC_SLOT_EVENT_MRL 0x08 -#define SHPC_SLOT_EVENT_CONNECTED_FAULT 0x10 -/* Bits below are used for Serr/Int disable only */ -#define SHPC_SLOT_EVENT_MRL_SERR_DIS 0x20 -#define SHPC_SLOT_EVENT_CONNECTED_FAULT_SERR_DIS 0x40 - -#define SHPC_MIN_SLOTS 1 -#define SHPC_MAX_SLOTS 31 -#define SHPC_SIZEOF(d) SHPC_SLOT_REG((d)->shpc->nslots) - -/* SHPC Slot identifiers */ - -/* Hotplug supported at 31 slots out of the total 32. We reserve slot 0, - and give the rest of them physical *and* pci numbers starting from 1, so - they match logical numbers. Note: this means that multiple slots must have - different chassis number values, to make chassis+physical slot unique. - TODO: make this configurable? */ -#define SHPC_IDX_TO_LOGICAL(slot) ((slot) + 1) -#define SHPC_LOGICAL_TO_IDX(target) ((target) - 1) -#define SHPC_IDX_TO_PCI(slot) ((slot) + 1) -#define SHPC_PCI_TO_IDX(pci_slot) ((pci_slot) - 1) -#define SHPC_IDX_TO_PHYSICAL(slot) ((slot) + 1) - -static int roundup_pow_of_two(int x) -{ - x |= (x >> 1); - x |= (x >> 2); - x |= (x >> 4); - x |= (x >> 8); - x |= (x >> 16); - return x + 1; -} - -static uint16_t shpc_get_status(SHPCDevice *shpc, int slot, uint16_t msk) -{ - uint8_t *status = shpc->config + SHPC_SLOT_STATUS(slot); - return (pci_get_word(status) & msk) >> ctz32(msk); -} - -static void shpc_set_status(SHPCDevice *shpc, - int slot, uint8_t value, uint16_t msk) -{ - uint8_t *status = shpc->config + SHPC_SLOT_STATUS(slot); - pci_word_test_and_clear_mask(status, msk); - pci_word_test_and_set_mask(status, value << ctz32(msk)); -} - -static void shpc_interrupt_update(PCIDevice *d) -{ - SHPCDevice *shpc = d->shpc; - int slot; - int level = 0; - uint32_t serr_int; - uint32_t int_locator = 0; - - /* Update interrupt locator register */ - for (slot = 0; slot < shpc->nslots; ++slot) { - uint8_t event = shpc->config[SHPC_SLOT_EVENT_LATCH(slot)]; - uint8_t disable = shpc->config[SHPC_SLOT_EVENT_SERR_INT_DIS(d, slot)]; - uint32_t mask = 1U << SHPC_IDX_TO_LOGICAL(slot); - if (event & ~disable) { - int_locator |= mask; - } - } - serr_int = pci_get_long(shpc->config + SHPC_SERR_INT); - if ((serr_int & SHPC_CMD_DETECTED) && !(serr_int & SHPC_CMD_INT_DIS)) { - int_locator |= SHPC_INT_COMMAND; - } - pci_set_long(shpc->config + SHPC_INT_LOCATOR, int_locator); - level = (!(serr_int & SHPC_INT_DIS) && int_locator) ? 1 : 0; - if (msi_enabled(d) && shpc->msi_requested != level) - msi_notify(d, 0); - else - pci_set_irq(d, level); - shpc->msi_requested = level; -} - -static void shpc_set_sec_bus_speed(SHPCDevice *shpc, uint8_t speed) -{ - switch (speed) { - case SHPC_SEC_BUS_33: - shpc->config[SHPC_SEC_BUS] &= ~SHPC_SEC_BUS_MASK; - shpc->config[SHPC_SEC_BUS] |= speed; - break; - default: - pci_word_test_and_set_mask(shpc->config + SHPC_CMD_STATUS, - SHPC_CMD_STATUS_INVALID_MODE); - } -} - -void shpc_reset(PCIDevice *d) -{ - SHPCDevice *shpc = d->shpc; - int nslots = shpc->nslots; - int i; - memset(shpc->config, 0, SHPC_SIZEOF(d)); - pci_set_byte(shpc->config + SHPC_NSLOTS, nslots); - pci_set_long(shpc->config + SHPC_SLOTS_33, nslots); - pci_set_long(shpc->config + SHPC_SLOTS_66, 0); - pci_set_byte(shpc->config + SHPC_FIRST_DEV, SHPC_IDX_TO_PCI(0)); - pci_set_word(shpc->config + SHPC_PHYS_SLOT, - SHPC_IDX_TO_PHYSICAL(0) | - SHPC_PHYS_NUM_UP | - SHPC_PHYS_MRL | - SHPC_PHYS_BUTTON); - pci_set_long(shpc->config + SHPC_SERR_INT, SHPC_INT_DIS | - SHPC_SERR_DIS | - SHPC_CMD_INT_DIS | - SHPC_ARB_SERR_DIS); - pci_set_byte(shpc->config + SHPC_PROG_IFC, SHPC_PROG_IFC_1_0); - pci_set_word(shpc->config + SHPC_SEC_BUS, SHPC_SEC_BUS_33); - for (i = 0; i < shpc->nslots; ++i) { - pci_set_byte(shpc->config + SHPC_SLOT_EVENT_SERR_INT_DIS(d, i), - SHPC_SLOT_EVENT_PRESENCE | - SHPC_SLOT_EVENT_ISOLATED_FAULT | - SHPC_SLOT_EVENT_BUTTON | - SHPC_SLOT_EVENT_MRL | - SHPC_SLOT_EVENT_CONNECTED_FAULT | - SHPC_SLOT_EVENT_MRL_SERR_DIS | - SHPC_SLOT_EVENT_CONNECTED_FAULT_SERR_DIS); - if (shpc->sec_bus->devices[PCI_DEVFN(SHPC_IDX_TO_PCI(i), 0)]) { - shpc_set_status(shpc, i, SHPC_STATE_ENABLED, SHPC_SLOT_STATE_MASK); - shpc_set_status(shpc, i, 0, SHPC_SLOT_STATUS_MRL_OPEN); - shpc_set_status(shpc, i, SHPC_SLOT_STATUS_PRSNT_7_5W, - SHPC_SLOT_STATUS_PRSNT_MASK); - shpc_set_status(shpc, i, SHPC_LED_ON, SHPC_SLOT_PWR_LED_MASK); - } else { - shpc_set_status(shpc, i, SHPC_STATE_DISABLED, SHPC_SLOT_STATE_MASK); - shpc_set_status(shpc, i, 1, SHPC_SLOT_STATUS_MRL_OPEN); - shpc_set_status(shpc, i, SHPC_SLOT_STATUS_PRSNT_EMPTY, - SHPC_SLOT_STATUS_PRSNT_MASK); - shpc_set_status(shpc, i, SHPC_LED_OFF, SHPC_SLOT_PWR_LED_MASK); - } - shpc_set_status(shpc, i, 0, SHPC_SLOT_STATUS_66); - } - shpc_set_sec_bus_speed(shpc, SHPC_SEC_BUS_33); - shpc->msi_requested = 0; - shpc_interrupt_update(d); -} - -static void shpc_invalid_command(SHPCDevice *shpc) -{ - pci_word_test_and_set_mask(shpc->config + SHPC_CMD_STATUS, - SHPC_CMD_STATUS_INVALID_CMD); -} - -static void shpc_free_devices_in_slot(SHPCDevice *shpc, int slot) -{ - int devfn; - int pci_slot = SHPC_IDX_TO_PCI(slot); - for (devfn = PCI_DEVFN(pci_slot, 0); - devfn <= PCI_DEVFN(pci_slot, PCI_FUNC_MAX - 1); - ++devfn) { - PCIDevice *affected_dev = shpc->sec_bus->devices[devfn]; - if (affected_dev) { - object_unparent(OBJECT(affected_dev)); - } - } -} - -static void shpc_slot_command(SHPCDevice *shpc, uint8_t target, - uint8_t state, uint8_t power, uint8_t attn) -{ - uint8_t current_state; - int slot = SHPC_LOGICAL_TO_IDX(target); - if (target < SHPC_CMD_TRGT_MIN || slot >= shpc->nslots) { - shpc_invalid_command(shpc); - return; - } - current_state = shpc_get_status(shpc, slot, SHPC_SLOT_STATE_MASK); - if (current_state == SHPC_STATE_ENABLED && state == SHPC_STATE_PWRONLY) { - shpc_invalid_command(shpc); - return; - } - - switch (power) { - case SHPC_LED_NO: - break; - default: - /* TODO: send event to monitor */ - shpc_set_status(shpc, slot, power, SHPC_SLOT_PWR_LED_MASK); - } - switch (attn) { - case SHPC_LED_NO: - break; - default: - /* TODO: send event to monitor */ - shpc_set_status(shpc, slot, attn, SHPC_SLOT_ATTN_LED_MASK); - } - - if ((current_state == SHPC_STATE_DISABLED && state == SHPC_STATE_PWRONLY) || - (current_state == SHPC_STATE_DISABLED && state == SHPC_STATE_ENABLED)) { - shpc_set_status(shpc, slot, state, SHPC_SLOT_STATE_MASK); - } else if ((current_state == SHPC_STATE_ENABLED || - current_state == SHPC_STATE_PWRONLY) && - state == SHPC_STATE_DISABLED) { - shpc_set_status(shpc, slot, state, SHPC_SLOT_STATE_MASK); - power = shpc_get_status(shpc, slot, SHPC_SLOT_PWR_LED_MASK); - /* TODO: track what monitor requested. */ - /* Look at LED to figure out whether it's ok to remove the device. */ - if (power == SHPC_LED_OFF) { - shpc_free_devices_in_slot(shpc, slot); - shpc_set_status(shpc, slot, 1, SHPC_SLOT_STATUS_MRL_OPEN); - shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_EMPTY, - SHPC_SLOT_STATUS_PRSNT_MASK); - shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |= - SHPC_SLOT_EVENT_BUTTON | - SHPC_SLOT_EVENT_MRL | - SHPC_SLOT_EVENT_PRESENCE; - } - } -} - -static void shpc_command(SHPCDevice *shpc) -{ - uint8_t code = pci_get_byte(shpc->config + SHPC_CMD_CODE); - uint8_t speed; - uint8_t target; - uint8_t attn; - uint8_t power; - uint8_t state; - int i; - - /* Clear status from the previous command. */ - pci_word_test_and_clear_mask(shpc->config + SHPC_CMD_STATUS, - SHPC_CMD_STATUS_BUSY | - SHPC_CMD_STATUS_MRL_OPEN | - SHPC_CMD_STATUS_INVALID_CMD | - SHPC_CMD_STATUS_INVALID_MODE); - switch (code) { - case 0x00 ... 0x3f: - target = shpc->config[SHPC_CMD_TRGT] & SHPC_CMD_TRGT_MAX; - state = (code & SHPC_SLOT_STATE_MASK) >> SHPC_SLOT_STATE_SHIFT; - power = (code & SHPC_SLOT_PWR_LED_MASK) >> SHPC_SLOT_PWR_LED_SHIFT; - attn = (code & SHPC_SLOT_ATTN_LED_MASK) >> SHPC_SLOT_ATTN_LED_SHIFT; - shpc_slot_command(shpc, target, state, power, attn); - break; - case 0x40 ... 0x47: - speed = code & SHPC_SEC_BUS_MASK; - shpc_set_sec_bus_speed(shpc, speed); - break; - case 0x48: - /* Power only all slots */ - /* first verify no slots are enabled */ - for (i = 0; i < shpc->nslots; ++i) { - state = shpc_get_status(shpc, i, SHPC_SLOT_STATE_MASK); - if (state == SHPC_STATE_ENABLED) { - shpc_invalid_command(shpc); - goto done; - } - } - for (i = 0; i < shpc->nslots; ++i) { - if (!(shpc_get_status(shpc, i, SHPC_SLOT_STATUS_MRL_OPEN))) { - shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN, - SHPC_STATE_PWRONLY, SHPC_LED_ON, SHPC_LED_NO); - } else { - shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN, - SHPC_STATE_NO, SHPC_LED_OFF, SHPC_LED_NO); - } - } - break; - case 0x49: - /* Enable all slots */ - /* TODO: Spec says this shall fail if some are already enabled. - * This doesn't make sense - why not? a spec bug? */ - for (i = 0; i < shpc->nslots; ++i) { - state = shpc_get_status(shpc, i, SHPC_SLOT_STATE_MASK); - if (state == SHPC_STATE_ENABLED) { - shpc_invalid_command(shpc); - goto done; - } - } - for (i = 0; i < shpc->nslots; ++i) { - if (!(shpc_get_status(shpc, i, SHPC_SLOT_STATUS_MRL_OPEN))) { - shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN, - SHPC_STATE_ENABLED, SHPC_LED_ON, SHPC_LED_NO); - } else { - shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN, - SHPC_STATE_NO, SHPC_LED_OFF, SHPC_LED_NO); - } - } - break; - default: - shpc_invalid_command(shpc); - break; - } -done: - pci_long_test_and_set_mask(shpc->config + SHPC_SERR_INT, SHPC_CMD_DETECTED); -} - -static void shpc_write(PCIDevice *d, unsigned addr, uint64_t val, int l) -{ - SHPCDevice *shpc = d->shpc; - int i; - if (addr >= SHPC_SIZEOF(d)) { - return; - } - l = MIN(l, SHPC_SIZEOF(d) - addr); - - /* TODO: code duplicated from pci.c */ - for (i = 0; i < l; val >>= 8, ++i) { - unsigned a = addr + i; - uint8_t wmask = shpc->wmask[a]; - uint8_t w1cmask = shpc->w1cmask[a]; - assert(!(wmask & w1cmask)); - shpc->config[a] = (shpc->config[a] & ~wmask) | (val & wmask); - shpc->config[a] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */ - } - if (ranges_overlap(addr, l, SHPC_CMD_CODE, 2)) { - shpc_command(shpc); - } - shpc_interrupt_update(d); -} - -static uint64_t shpc_read(PCIDevice *d, unsigned addr, int l) -{ - uint64_t val = 0x0; - if (addr >= SHPC_SIZEOF(d)) { - return val; - } - l = MIN(l, SHPC_SIZEOF(d) - addr); - memcpy(&val, d->shpc->config + addr, l); - return val; -} - -/* SHPC Bridge Capability */ -#define SHPC_CAP_LENGTH 0x08 -#define SHPC_CAP_DWORD_SELECT 0x2 /* 1 byte */ -#define SHPC_CAP_CxP 0x3 /* 1 byte: CSP, CIP */ -#define SHPC_CAP_DWORD_DATA 0x4 /* 4 bytes */ -#define SHPC_CAP_CSP_MASK 0x4 -#define SHPC_CAP_CIP_MASK 0x8 - -static uint8_t shpc_cap_dword(PCIDevice *d) -{ - return pci_get_byte(d->config + d->shpc->cap + SHPC_CAP_DWORD_SELECT); -} - -/* Update dword data capability register */ -static void shpc_cap_update_dword(PCIDevice *d) -{ - unsigned data; - data = shpc_read(d, shpc_cap_dword(d) * 4, 4); - pci_set_long(d->config + d->shpc->cap + SHPC_CAP_DWORD_DATA, data); -} - -/* Add SHPC capability to the config space for the device. */ -static int shpc_cap_add_config(PCIDevice *d) -{ - uint8_t *config; - int config_offset; - config_offset = pci_add_capability(d, PCI_CAP_ID_SHPC, - 0, SHPC_CAP_LENGTH); - if (config_offset < 0) { - return config_offset; - } - config = d->config + config_offset; - - pci_set_byte(config + SHPC_CAP_DWORD_SELECT, 0); - pci_set_byte(config + SHPC_CAP_CxP, 0); - pci_set_long(config + SHPC_CAP_DWORD_DATA, 0); - d->shpc->cap = config_offset; - /* Make dword select and data writeable. */ - pci_set_byte(d->wmask + config_offset + SHPC_CAP_DWORD_SELECT, 0xff); - pci_set_long(d->wmask + config_offset + SHPC_CAP_DWORD_DATA, 0xffffffff); - return 0; -} - -static uint64_t shpc_mmio_read(void *opaque, hwaddr addr, - unsigned size) -{ - return shpc_read(opaque, addr, size); -} - -static void shpc_mmio_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) -{ - shpc_write(opaque, addr, val, size); -} - -static const MemoryRegionOps shpc_mmio_ops = { - .read = shpc_mmio_read, - .write = shpc_mmio_write, - .endianness = DEVICE_LITTLE_ENDIAN, - .valid = { - /* SHPC ECN requires dword accesses, but the original 1.0 spec doesn't. - * It's easier to suppport all sizes than worry about it. */ - .min_access_size = 1, - .max_access_size = 4, - }, -}; -static void shpc_device_hotplug_common(PCIDevice *affected_dev, int *slot, - SHPCDevice *shpc, Error **errp) -{ - int pci_slot = PCI_SLOT(affected_dev->devfn); - *slot = SHPC_PCI_TO_IDX(pci_slot); - - if (pci_slot < SHPC_IDX_TO_PCI(0) || *slot >= shpc->nslots) { - error_setg(errp, "Unsupported PCI slot %d for standard hotplug " - "controller. Valid slots are between %d and %d.", - pci_slot, SHPC_IDX_TO_PCI(0), - SHPC_IDX_TO_PCI(shpc->nslots) - 1); - return; - } -} - -void shpc_device_hotplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, - Error **errp) -{ - Error *local_err = NULL; - PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev); - SHPCDevice *shpc = pci_hotplug_dev->shpc; - int slot; - - shpc_device_hotplug_common(PCI_DEVICE(dev), &slot, shpc, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - - /* Don't send event when device is enabled during qemu machine creation: - * it is present on boot, no hotplug event is necessary. We do send an - * event when the device is disabled later. */ - if (!dev->hotplugged) { - shpc_set_status(shpc, slot, 0, SHPC_SLOT_STATUS_MRL_OPEN); - shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_7_5W, - SHPC_SLOT_STATUS_PRSNT_MASK); - return; - } - - /* This could be a cancellation of the previous removal. - * We check MRL state to figure out. */ - if (shpc_get_status(shpc, slot, SHPC_SLOT_STATUS_MRL_OPEN)) { - shpc_set_status(shpc, slot, 0, SHPC_SLOT_STATUS_MRL_OPEN); - shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_7_5W, - SHPC_SLOT_STATUS_PRSNT_MASK); - shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |= - SHPC_SLOT_EVENT_BUTTON | - SHPC_SLOT_EVENT_MRL | - SHPC_SLOT_EVENT_PRESENCE; - } else { - /* Press attention button to cancel removal */ - shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |= - SHPC_SLOT_EVENT_BUTTON; - } - shpc_set_status(shpc, slot, 0, SHPC_SLOT_STATUS_66); - shpc_interrupt_update(pci_hotplug_dev); -} - -void shpc_device_hot_unplug_request_cb(HotplugHandler *hotplug_dev, - DeviceState *dev, Error **errp) -{ - Error *local_err = NULL; - PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev); - SHPCDevice *shpc = pci_hotplug_dev->shpc; - uint8_t state; - uint8_t led; - int slot; - - shpc_device_hotplug_common(PCI_DEVICE(dev), &slot, shpc, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - - shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |= SHPC_SLOT_EVENT_BUTTON; - state = shpc_get_status(shpc, slot, SHPC_SLOT_STATE_MASK); - led = shpc_get_status(shpc, slot, SHPC_SLOT_PWR_LED_MASK); - if (state == SHPC_STATE_DISABLED && led == SHPC_LED_OFF) { - shpc_free_devices_in_slot(shpc, slot); - shpc_set_status(shpc, slot, 1, SHPC_SLOT_STATUS_MRL_OPEN); - shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_EMPTY, - SHPC_SLOT_STATUS_PRSNT_MASK); - shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |= - SHPC_SLOT_EVENT_MRL | - SHPC_SLOT_EVENT_PRESENCE; - } - shpc_set_status(shpc, slot, 0, SHPC_SLOT_STATUS_66); - shpc_interrupt_update(pci_hotplug_dev); -} - -/* Initialize the SHPC structure in bridge's BAR. */ -int shpc_init(PCIDevice *d, PCIBus *sec_bus, MemoryRegion *bar, unsigned offset) -{ - int i, ret; - int nslots = SHPC_MAX_SLOTS; /* TODO: qdev property? */ - SHPCDevice *shpc = d->shpc = g_malloc0(sizeof(*d->shpc)); - shpc->sec_bus = sec_bus; - ret = shpc_cap_add_config(d); - if (ret) { - g_free(d->shpc); - return ret; - } - if (nslots < SHPC_MIN_SLOTS) { - return 0; - } - if (nslots > SHPC_MAX_SLOTS || - SHPC_IDX_TO_PCI(nslots) > PCI_SLOT_MAX) { - /* TODO: report an error mesage that makes sense. */ - return -EINVAL; - } - shpc->nslots = nslots; - shpc->config = g_malloc0(SHPC_SIZEOF(d)); - shpc->cmask = g_malloc0(SHPC_SIZEOF(d)); - shpc->wmask = g_malloc0(SHPC_SIZEOF(d)); - shpc->w1cmask = g_malloc0(SHPC_SIZEOF(d)); - - shpc_reset(d); - - pci_set_long(shpc->config + SHPC_BASE_OFFSET, offset); - - pci_set_byte(shpc->wmask + SHPC_CMD_CODE, 0xff); - pci_set_byte(shpc->wmask + SHPC_CMD_TRGT, SHPC_CMD_TRGT_MAX); - pci_set_byte(shpc->wmask + SHPC_CMD_TRGT, SHPC_CMD_TRGT_MAX); - pci_set_long(shpc->wmask + SHPC_SERR_INT, - SHPC_INT_DIS | - SHPC_SERR_DIS | - SHPC_CMD_INT_DIS | - SHPC_ARB_SERR_DIS); - pci_set_long(shpc->w1cmask + SHPC_SERR_INT, - SHPC_CMD_DETECTED | - SHPC_ARB_DETECTED); - for (i = 0; i < nslots; ++i) { - pci_set_byte(shpc->wmask + - SHPC_SLOT_EVENT_SERR_INT_DIS(d, i), - SHPC_SLOT_EVENT_PRESENCE | - SHPC_SLOT_EVENT_ISOLATED_FAULT | - SHPC_SLOT_EVENT_BUTTON | - SHPC_SLOT_EVENT_MRL | - SHPC_SLOT_EVENT_CONNECTED_FAULT | - SHPC_SLOT_EVENT_MRL_SERR_DIS | - SHPC_SLOT_EVENT_CONNECTED_FAULT_SERR_DIS); - pci_set_byte(shpc->w1cmask + - SHPC_SLOT_EVENT_LATCH(i), - SHPC_SLOT_EVENT_PRESENCE | - SHPC_SLOT_EVENT_ISOLATED_FAULT | - SHPC_SLOT_EVENT_BUTTON | - SHPC_SLOT_EVENT_MRL | - SHPC_SLOT_EVENT_CONNECTED_FAULT); - } - - /* TODO: init cmask */ - memory_region_init_io(&shpc->mmio, OBJECT(d), &shpc_mmio_ops, - d, "shpc-mmio", SHPC_SIZEOF(d)); - shpc_cap_update_dword(d); - memory_region_add_subregion(bar, offset, &shpc->mmio); - - qbus_set_hotplug_handler(BUS(sec_bus), DEVICE(d), NULL); - - d->cap_present |= QEMU_PCI_CAP_SHPC; - return 0; -} - -int shpc_bar_size(PCIDevice *d) -{ - return roundup_pow_of_two(SHPC_SLOT_REG(SHPC_MAX_SLOTS)); -} - -void shpc_cleanup(PCIDevice *d, MemoryRegion *bar) -{ - SHPCDevice *shpc = d->shpc; - d->cap_present &= ~QEMU_PCI_CAP_SHPC; - memory_region_del_subregion(bar, &shpc->mmio); - /* TODO: cleanup config space changes? */ -} - -void shpc_free(PCIDevice *d) -{ - SHPCDevice *shpc = d->shpc; - if (!shpc) { - return; - } - object_unparent(OBJECT(&shpc->mmio)); - g_free(shpc->config); - g_free(shpc->cmask); - g_free(shpc->wmask); - g_free(shpc->w1cmask); - g_free(shpc); - d->shpc = NULL; -} - -void shpc_cap_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l) -{ - if (!ranges_overlap(addr, l, d->shpc->cap, SHPC_CAP_LENGTH)) { - return; - } - if (ranges_overlap(addr, l, d->shpc->cap + SHPC_CAP_DWORD_DATA, 4)) { - unsigned dword_data; - dword_data = pci_get_long(d->shpc->config + d->shpc->cap - + SHPC_CAP_DWORD_DATA); - shpc_write(d, shpc_cap_dword(d) * 4, dword_data, 4); - } - /* Update cap dword data in case guest is going to read it. */ - shpc_cap_update_dword(d); -} - -static void shpc_save(QEMUFile *f, void *pv, size_t size) -{ - PCIDevice *d = container_of(pv, PCIDevice, shpc); - qemu_put_buffer(f, d->shpc->config, SHPC_SIZEOF(d)); -} - -static int shpc_load(QEMUFile *f, void *pv, size_t size) -{ - PCIDevice *d = container_of(pv, PCIDevice, shpc); - int ret = qemu_get_buffer(f, d->shpc->config, SHPC_SIZEOF(d)); - if (ret != SHPC_SIZEOF(d)) { - return -EINVAL; - } - /* Make sure we don't lose notifications. An extra interrupt is harmless. */ - d->shpc->msi_requested = 0; - shpc_interrupt_update(d); - return 0; -} - -VMStateInfo shpc_vmstate_info = { - .name = "shpc", - .get = shpc_load, - .put = shpc_save, -}; diff --git a/qemu/hw/pci/slotid_cap.c b/qemu/hw/pci/slotid_cap.c deleted file mode 100644 index aec1e9166..000000000 --- a/qemu/hw/pci/slotid_cap.c +++ /dev/null @@ -1,46 +0,0 @@ -#include "qemu/osdep.h" -#include "hw/pci/slotid_cap.h" -#include "hw/pci/pci.h" -#include "qemu/error-report.h" - -#define SLOTID_CAP_LENGTH 4 -#define SLOTID_NSLOTS_SHIFT ctz32(PCI_SID_ESR_NSLOTS) - -int slotid_cap_init(PCIDevice *d, int nslots, - uint8_t chassis, - unsigned offset) -{ - int cap; - if (!chassis) { - error_report("Bridge chassis not specified. Each bridge is required " - "to be assigned a unique chassis id > 0."); - return -EINVAL; - } - if (nslots < 0 || nslots > (PCI_SID_ESR_NSLOTS >> SLOTID_NSLOTS_SHIFT)) { - /* TODO: error report? */ - return -EINVAL; - } - - cap = pci_add_capability(d, PCI_CAP_ID_SLOTID, offset, SLOTID_CAP_LENGTH); - if (cap < 0) { - return cap; - } - /* We make each chassis unique, this way each bridge is First in Chassis */ - d->config[cap + PCI_SID_ESR] = PCI_SID_ESR_FIC | - (nslots << SLOTID_NSLOTS_SHIFT); - d->cmask[cap + PCI_SID_ESR] = 0xff; - d->config[cap + PCI_SID_CHASSIS_NR] = chassis; - /* Note: Chassis number register is non-volatile, - so we don't reset it. */ - /* TODO: store in eeprom? */ - d->wmask[cap + PCI_SID_CHASSIS_NR] = 0xff; - - d->cap_present |= QEMU_PCI_CAP_SLOTID; - return 0; -} - -void slotid_cap_cleanup(PCIDevice *d) -{ - /* TODO: cleanup config space? */ - d->cap_present &= ~QEMU_PCI_CAP_SLOTID; -} -- cgit 1.2.3-korg