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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/char/bcm2835_aux.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
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<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/char/bcm2835_aux.c')
-rw-r--r--qemu/hw/char/bcm2835_aux.c316
1 files changed, 0 insertions, 316 deletions
diff --git a/qemu/hw/char/bcm2835_aux.c b/qemu/hw/char/bcm2835_aux.c
deleted file mode 100644
index 0394d11a8..000000000
--- a/qemu/hw/char/bcm2835_aux.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- * BCM2835 (Raspberry Pi / Pi 2) Aux block (mini UART and SPI).
- * Copyright (c) 2015, Microsoft
- * Written by Andrew Baumann
- * Based on pl011.c, copyright terms below:
- *
- * Arm PrimeCell PL011 UART
- *
- * Copyright (c) 2006 CodeSourcery.
- * Written by Paul Brook
- *
- * This code is licensed under the GPL.
- *
- * At present only the core UART functions (data path for tx/rx) are
- * implemented. The following features/registers are unimplemented:
- * - Line/modem control
- * - Scratch register
- * - Extra control
- * - Baudrate
- * - SPI interfaces
- */
-
-#include "qemu/osdep.h"
-#include "hw/char/bcm2835_aux.h"
-
-#define AUX_IRQ 0x0
-#define AUX_ENABLES 0x4
-#define AUX_MU_IO_REG 0x40
-#define AUX_MU_IER_REG 0x44
-#define AUX_MU_IIR_REG 0x48
-#define AUX_MU_LCR_REG 0x4c
-#define AUX_MU_MCR_REG 0x50
-#define AUX_MU_LSR_REG 0x54
-#define AUX_MU_MSR_REG 0x58
-#define AUX_MU_SCRATCH 0x5c
-#define AUX_MU_CNTL_REG 0x60
-#define AUX_MU_STAT_REG 0x64
-#define AUX_MU_BAUD_REG 0x68
-
-/* bits in IER/IIR registers */
-#define TX_INT 0x1
-#define RX_INT 0x2
-
-static void bcm2835_aux_update(BCM2835AuxState *s)
-{
- /* signal an interrupt if either:
- * 1. rx interrupt is enabled and we have a non-empty rx fifo, or
- * 2. the tx interrupt is enabled (since we instantly drain the tx fifo)
- */
- s->iir = 0;
- if ((s->ier & RX_INT) && s->read_count != 0) {
- s->iir |= RX_INT;
- }
- if (s->ier & TX_INT) {
- s->iir |= TX_INT;
- }
- qemu_set_irq(s->irq, s->iir != 0);
-}
-
-static uint64_t bcm2835_aux_read(void *opaque, hwaddr offset, unsigned size)
-{
- BCM2835AuxState *s = opaque;
- uint32_t c, res;
-
- switch (offset) {
- case AUX_IRQ:
- return s->iir != 0;
-
- case AUX_ENABLES:
- return 1; /* mini UART permanently enabled */
-
- case AUX_MU_IO_REG:
- /* "DLAB bit set means access baudrate register" is NYI */
- c = s->read_fifo[s->read_pos];
- if (s->read_count > 0) {
- s->read_count--;
- if (++s->read_pos == BCM2835_AUX_RX_FIFO_LEN) {
- s->read_pos = 0;
- }
- }
- if (s->chr) {
- qemu_chr_accept_input(s->chr);
- }
- bcm2835_aux_update(s);
- return c;
-
- case AUX_MU_IER_REG:
- /* "DLAB bit set means access baudrate register" is NYI */
- return 0xc0 | s->ier; /* FIFO enables always read 1 */
-
- case AUX_MU_IIR_REG:
- res = 0xc0; /* FIFO enables */
- /* The spec is unclear on what happens when both tx and rx
- * interrupts are active, besides that this cannot occur. At
- * present, we choose to prioritise the rx interrupt, since
- * the tx fifo is always empty. */
- if (s->read_count != 0) {
- res |= 0x4;
- } else {
- res |= 0x2;
- }
- if (s->iir == 0) {
- res |= 0x1;
- }
- return res;
-
- case AUX_MU_LCR_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_LCR_REG unsupported\n", __func__);
- return 0;
-
- case AUX_MU_MCR_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_MCR_REG unsupported\n", __func__);
- return 0;
-
- case AUX_MU_LSR_REG:
- res = 0x60; /* tx idle, empty */
- if (s->read_count != 0) {
- res |= 0x1;
- }
- return res;
-
- case AUX_MU_MSR_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_MSR_REG unsupported\n", __func__);
- return 0;
-
- case AUX_MU_SCRATCH:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_SCRATCH unsupported\n", __func__);
- return 0;
-
- case AUX_MU_CNTL_REG:
- return 0x3; /* tx, rx enabled */
-
- case AUX_MU_STAT_REG:
- res = 0x30e; /* space in the output buffer, empty tx fifo, idle tx/rx */
- if (s->read_count > 0) {
- res |= 0x1; /* data in input buffer */
- assert(s->read_count < BCM2835_AUX_RX_FIFO_LEN);
- res |= ((uint32_t)s->read_count) << 16; /* rx fifo fill level */
- }
- return res;
-
- case AUX_MU_BAUD_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_BAUD_REG unsupported\n", __func__);
- return 0;
-
- default:
- qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset %"HWADDR_PRIx"\n",
- __func__, offset);
- return 0;
- }
-}
-
-static void bcm2835_aux_write(void *opaque, hwaddr offset, uint64_t value,
- unsigned size)
-{
- BCM2835AuxState *s = opaque;
- unsigned char ch;
-
- switch (offset) {
- case AUX_ENABLES:
- if (value != 1) {
- qemu_log_mask(LOG_UNIMP, "%s: unsupported attempt to enable SPI "
- "or disable UART\n", __func__);
- }
- break;
-
- case AUX_MU_IO_REG:
- /* "DLAB bit set means access baudrate register" is NYI */
- ch = value;
- if (s->chr) {
- qemu_chr_fe_write(s->chr, &ch, 1);
- }
- break;
-
- case AUX_MU_IER_REG:
- /* "DLAB bit set means access baudrate register" is NYI */
- s->ier = value & (TX_INT | RX_INT);
- bcm2835_aux_update(s);
- break;
-
- case AUX_MU_IIR_REG:
- if (value & 0x2) {
- s->read_count = 0;
- }
- break;
-
- case AUX_MU_LCR_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_LCR_REG unsupported\n", __func__);
- break;
-
- case AUX_MU_MCR_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_MCR_REG unsupported\n", __func__);
- break;
-
- case AUX_MU_SCRATCH:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_SCRATCH unsupported\n", __func__);
- break;
-
- case AUX_MU_CNTL_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_CNTL_REG unsupported\n", __func__);
- break;
-
- case AUX_MU_BAUD_REG:
- qemu_log_mask(LOG_UNIMP, "%s: AUX_MU_BAUD_REG unsupported\n", __func__);
- break;
-
- default:
- qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset %"HWADDR_PRIx"\n",
- __func__, offset);
- }
-
- bcm2835_aux_update(s);
-}
-
-static int bcm2835_aux_can_receive(void *opaque)
-{
- BCM2835AuxState *s = opaque;
-
- return s->read_count < BCM2835_AUX_RX_FIFO_LEN;
-}
-
-static void bcm2835_aux_put_fifo(void *opaque, uint8_t value)
-{
- BCM2835AuxState *s = opaque;
- int slot;
-
- slot = s->read_pos + s->read_count;
- if (slot >= BCM2835_AUX_RX_FIFO_LEN) {
- slot -= BCM2835_AUX_RX_FIFO_LEN;
- }
- s->read_fifo[slot] = value;
- s->read_count++;
- if (s->read_count == BCM2835_AUX_RX_FIFO_LEN) {
- /* buffer full */
- }
- bcm2835_aux_update(s);
-}
-
-static void bcm2835_aux_receive(void *opaque, const uint8_t *buf, int size)
-{
- bcm2835_aux_put_fifo(opaque, *buf);
-}
-
-static const MemoryRegionOps bcm2835_aux_ops = {
- .read = bcm2835_aux_read,
- .write = bcm2835_aux_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
- .valid.min_access_size = 4,
- .valid.max_access_size = 4,
-};
-
-static const VMStateDescription vmstate_bcm2835_aux = {
- .name = TYPE_BCM2835_AUX,
- .version_id = 1,
- .minimum_version_id = 1,
- .fields = (VMStateField[]) {
- VMSTATE_UINT8_ARRAY(read_fifo, BCM2835AuxState,
- BCM2835_AUX_RX_FIFO_LEN),
- VMSTATE_UINT8(read_pos, BCM2835AuxState),
- VMSTATE_UINT8(read_count, BCM2835AuxState),
- VMSTATE_UINT8(ier, BCM2835AuxState),
- VMSTATE_UINT8(iir, BCM2835AuxState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void bcm2835_aux_init(Object *obj)
-{
- SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
- BCM2835AuxState *s = BCM2835_AUX(obj);
-
- memory_region_init_io(&s->iomem, OBJECT(s), &bcm2835_aux_ops, s,
- TYPE_BCM2835_AUX, 0x100);
- sysbus_init_mmio(sbd, &s->iomem);
- sysbus_init_irq(sbd, &s->irq);
-}
-
-static void bcm2835_aux_realize(DeviceState *dev, Error **errp)
-{
- BCM2835AuxState *s = BCM2835_AUX(dev);
-
- if (s->chr) {
- qemu_chr_add_handlers(s->chr, bcm2835_aux_can_receive,
- bcm2835_aux_receive, NULL, s);
- }
-}
-
-static Property bcm2835_aux_props[] = {
- DEFINE_PROP_CHR("chardev", BCM2835AuxState, chr),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void bcm2835_aux_class_init(ObjectClass *oc, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(oc);
-
- dc->realize = bcm2835_aux_realize;
- dc->vmsd = &vmstate_bcm2835_aux;
- set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
- dc->props = bcm2835_aux_props;
-}
-
-static const TypeInfo bcm2835_aux_info = {
- .name = TYPE_BCM2835_AUX,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(BCM2835AuxState),
- .instance_init = bcm2835_aux_init,
- .class_init = bcm2835_aux_class_init,
-};
-
-static void bcm2835_aux_register_types(void)
-{
- type_register_static(&bcm2835_aux_info);
-}
-
-type_init(bcm2835_aux_register_types)