diff options
Diffstat (limited to 'qemu/roms/seabios/src/hw/pci.c')
-rw-r--r-- | qemu/roms/seabios/src/hw/pci.c | 282 |
1 files changed, 0 insertions, 282 deletions
diff --git a/qemu/roms/seabios/src/hw/pci.c b/qemu/roms/seabios/src/hw/pci.c deleted file mode 100644 index a241d0675..000000000 --- a/qemu/roms/seabios/src/hw/pci.c +++ /dev/null @@ -1,282 +0,0 @@ -// PCI config space access functions. -// -// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> -// Copyright (C) 2002 MandrakeSoft S.A. -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "malloc.h" // malloc_tmp -#include "output.h" // dprintf -#include "pci.h" // pci_config_writel -#include "pci_regs.h" // PCI_VENDOR_ID -#include "romfile.h" // romfile_loadint -#include "string.h" // memset -#include "util.h" // udelay -#include "x86.h" // outl - -void pci_config_writel(u16 bdf, u32 addr, u32 val) -{ - outl(0x80000000 | (bdf << 8) | (addr & 0xfc), PORT_PCI_CMD); - outl(val, PORT_PCI_DATA); -} - -void pci_config_writew(u16 bdf, u32 addr, u16 val) -{ - outl(0x80000000 | (bdf << 8) | (addr & 0xfc), PORT_PCI_CMD); - outw(val, PORT_PCI_DATA + (addr & 2)); -} - -void pci_config_writeb(u16 bdf, u32 addr, u8 val) -{ - outl(0x80000000 | (bdf << 8) | (addr & 0xfc), PORT_PCI_CMD); - outb(val, PORT_PCI_DATA + (addr & 3)); -} - -u32 pci_config_readl(u16 bdf, u32 addr) -{ - outl(0x80000000 | (bdf << 8) | (addr & 0xfc), PORT_PCI_CMD); - return inl(PORT_PCI_DATA); -} - -u16 pci_config_readw(u16 bdf, u32 addr) -{ - outl(0x80000000 | (bdf << 8) | (addr & 0xfc), PORT_PCI_CMD); - return inw(PORT_PCI_DATA + (addr & 2)); -} - -u8 pci_config_readb(u16 bdf, u32 addr) -{ - outl(0x80000000 | (bdf << 8) | (addr & 0xfc), PORT_PCI_CMD); - return inb(PORT_PCI_DATA + (addr & 3)); -} - -void -pci_config_maskw(u16 bdf, u32 addr, u16 off, u16 on) -{ - u16 val = pci_config_readw(bdf, addr); - val = (val & ~off) | on; - pci_config_writew(bdf, addr, val); -} - -// Helper function for foreachbdf() macro - return next device -int -pci_next(int bdf, int bus) -{ - if (pci_bdf_to_fn(bdf) == 0 - && (pci_config_readb(bdf, PCI_HEADER_TYPE) & 0x80) == 0) - // Last found device wasn't a multi-function device - skip to - // the next device. - bdf += 8; - else - bdf += 1; - - for (;;) { - if (pci_bdf_to_bus(bdf) != bus) - return -1; - - u16 v = pci_config_readw(bdf, PCI_VENDOR_ID); - if (v != 0x0000 && v != 0xffff) - // Device is present. - return bdf; - - if (pci_bdf_to_fn(bdf) == 0) - bdf += 8; - else - bdf += 1; - } -} - -struct hlist_head PCIDevices VARVERIFY32INIT; -int MaxPCIBus VARFSEG; - -// Check if PCI is available at all -int -pci_probe_host(void) -{ - outl(0x80000000, PORT_PCI_CMD); - if (inl(PORT_PCI_CMD) != 0x80000000) { - dprintf(1, "Detected non-PCI system\n"); - return -1; - } - return 0; -} - -// Find all PCI devices and populate PCIDevices linked list. -void -pci_probe_devices(void) -{ - dprintf(3, "PCI probe\n"); - struct pci_device *busdevs[256]; - memset(busdevs, 0, sizeof(busdevs)); - struct hlist_node **pprev = &PCIDevices.first; - int extraroots = romfile_loadint("etc/extra-pci-roots", 0); - int bus = -1, lastbus = 0, rootbuses = 0, count=0; - while (bus < 0xff && (bus < MaxPCIBus || rootbuses < extraroots)) { - bus++; - int bdf; - foreachbdf(bdf, bus) { - // Create new pci_device struct and add to list. - struct pci_device *dev = malloc_tmp(sizeof(*dev)); - if (!dev) { - warn_noalloc(); - return; - } - memset(dev, 0, sizeof(*dev)); - hlist_add(&dev->node, pprev); - pprev = &dev->node.next; - count++; - - // Find parent device. - int rootbus; - struct pci_device *parent = busdevs[bus]; - if (!parent) { - if (bus != lastbus) - rootbuses++; - lastbus = bus; - rootbus = rootbuses; - if (bus > MaxPCIBus) - MaxPCIBus = bus; - } else { - rootbus = parent->rootbus; - } - - // Populate pci_device info. - dev->bdf = bdf; - dev->parent = parent; - dev->rootbus = rootbus; - u32 vendev = pci_config_readl(bdf, PCI_VENDOR_ID); - dev->vendor = vendev & 0xffff; - dev->device = vendev >> 16; - u32 classrev = pci_config_readl(bdf, PCI_CLASS_REVISION); - dev->class = classrev >> 16; - dev->prog_if = classrev >> 8; - dev->revision = classrev & 0xff; - dev->header_type = pci_config_readb(bdf, PCI_HEADER_TYPE); - u8 v = dev->header_type & 0x7f; - if (v == PCI_HEADER_TYPE_BRIDGE || v == PCI_HEADER_TYPE_CARDBUS) { - u8 secbus = pci_config_readb(bdf, PCI_SECONDARY_BUS); - dev->secondary_bus = secbus; - if (secbus > bus && !busdevs[secbus]) - busdevs[secbus] = dev; - if (secbus > MaxPCIBus) - MaxPCIBus = secbus; - } - dprintf(4, "PCI device %02x:%02x.%x (vd=%04x:%04x c=%04x)\n" - , pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf) - , pci_bdf_to_fn(bdf) - , dev->vendor, dev->device, dev->class); - } - } - dprintf(1, "Found %d PCI devices (max PCI bus is %02x)\n", count, MaxPCIBus); -} - -// Search for a device with the specified vendor and device ids. -struct pci_device * -pci_find_device(u16 vendid, u16 devid) -{ - struct pci_device *pci; - foreachpci(pci) { - if (pci->vendor == vendid && pci->device == devid) - return pci; - } - return NULL; -} - -// Search for a device with the specified class id. -struct pci_device * -pci_find_class(u16 classid) -{ - struct pci_device *pci; - foreachpci(pci) { - if (pci->class == classid) - return pci; - } - return NULL; -} - -int pci_init_device(const struct pci_device_id *ids - , struct pci_device *pci, void *arg) -{ - while (ids->vendid || ids->class_mask) { - if ((ids->vendid == PCI_ANY_ID || ids->vendid == pci->vendor) && - (ids->devid == PCI_ANY_ID || ids->devid == pci->device) && - !((ids->class ^ pci->class) & ids->class_mask)) { - if (ids->func) - ids->func(pci, arg); - return 0; - } - ids++; - } - return -1; -} - -struct pci_device * -pci_find_init_device(const struct pci_device_id *ids, void *arg) -{ - struct pci_device *pci; - foreachpci(pci) { - if (pci_init_device(ids, pci, arg) == 0) - return pci; - } - return NULL; -} - -u8 pci_find_capability(struct pci_device *pci, u8 cap_id, u8 cap) -{ - int i; - u16 status = pci_config_readw(pci->bdf, PCI_STATUS); - - if (!(status & PCI_STATUS_CAP_LIST)) - return 0; - - if (cap == 0) { - /* find first */ - cap = pci_config_readb(pci->bdf, PCI_CAPABILITY_LIST); - } else { - /* find next */ - cap = pci_config_readb(pci->bdf, cap + PCI_CAP_LIST_NEXT); - } - for (i = 0; cap && i <= 0xff; i++) { - if (pci_config_readb(pci->bdf, cap + PCI_CAP_LIST_ID) == cap_id) - return cap; - cap = pci_config_readb(pci->bdf, cap + PCI_CAP_LIST_NEXT); - } - - return 0; -} - -/* Test whether bridge support forwarding of transactions - * of a specific type. - * Note: disables bridge's window registers as a side effect. - */ -int pci_bridge_has_region(struct pci_device *pci, - enum pci_region_type region_type) -{ - u8 base; - - switch (region_type) { - case PCI_REGION_TYPE_IO: - base = PCI_IO_BASE; - break; - case PCI_REGION_TYPE_PREFMEM: - base = PCI_PREF_MEMORY_BASE; - break; - default: - /* Regular memory support is mandatory */ - return 1; - } - - pci_config_writeb(pci->bdf, base, 0xFF); - - return pci_config_readb(pci->bdf, base) != 0; -} - -void -pci_reboot(void) -{ - u8 v = inb(PORT_PCI_REBOOT) & ~6; - outb(v|2, PORT_PCI_REBOOT); /* Request hard reset */ - udelay(50); - outb(v|6, PORT_PCI_REBOOT); /* Actually do the reset */ - udelay(50); -} |