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/*
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* QEMU PCI bus manager
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h" |
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|
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//#define DEBUG_PCI
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|
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#define PCI_VENDOR_ID 0x00 /* 16 bits */ |
| 29 |
#define PCI_DEVICE_ID 0x02 /* 16 bits */ |
| 30 |
#define PCI_COMMAND 0x04 /* 16 bits */ |
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#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */ |
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#define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */ |
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#define PCI_CLASS_DEVICE 0x0a /* Device class */ |
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#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ |
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#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ |
| 36 |
#define PCI_MIN_GNT 0x3e /* 8 bits */ |
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#define PCI_MAX_LAT 0x3f /* 8 bits */ |
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|
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/* just used for simpler irq handling. */
|
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#define PCI_DEVICES_MAX 64 |
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#define PCI_IRQ_WORDS ((PCI_DEVICES_MAX + 31) / 32) |
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|
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typedef struct PCIBridge { |
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uint32_t config_reg; |
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PCIDevice **pci_bus[256];
|
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} PCIBridge; |
| 47 |
|
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static PCIBridge pci_bridge;
|
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target_phys_addr_t pci_mem_base; |
| 50 |
static int pci_irq_index; |
| 51 |
static uint32_t pci_irq_levels[4][PCI_IRQ_WORDS]; |
| 52 |
|
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/* -1 for devfn means auto assign */
|
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PCIDevice *pci_register_device(const char *name, int instance_size, |
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int bus_num, int devfn, |
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PCIConfigReadFunc *config_read, |
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PCIConfigWriteFunc *config_write) |
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{
|
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PCIBridge *s = &pci_bridge; |
| 60 |
PCIDevice *pci_dev, **bus; |
| 61 |
|
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if (pci_irq_index >= PCI_DEVICES_MAX)
|
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return NULL; |
| 64 |
|
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if (!s->pci_bus[bus_num]) {
|
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s->pci_bus[bus_num] = qemu_mallocz(256 * sizeof(PCIDevice *)); |
| 67 |
if (!s->pci_bus[bus_num])
|
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return NULL; |
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} |
| 70 |
bus = s->pci_bus[bus_num]; |
| 71 |
if (devfn < 0) { |
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for(devfn = 0 ; devfn < 256; devfn += 8) { |
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if (!bus[devfn])
|
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goto found;
|
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} |
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return NULL; |
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found: ;
|
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} |
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pci_dev = qemu_mallocz(instance_size); |
| 80 |
if (!pci_dev)
|
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return NULL; |
| 82 |
pci_dev->bus_num = bus_num; |
| 83 |
pci_dev->devfn = devfn; |
| 84 |
pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
|
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|
| 86 |
if (!config_read)
|
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config_read = pci_default_read_config; |
| 88 |
if (!config_write)
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config_write = pci_default_write_config; |
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pci_dev->config_read = config_read; |
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pci_dev->config_write = config_write; |
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pci_dev->irq_index = pci_irq_index++; |
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bus[devfn] = pci_dev; |
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return pci_dev;
|
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} |
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|
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void pci_register_io_region(PCIDevice *pci_dev, int region_num, |
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uint32_t size, int type,
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PCIMapIORegionFunc *map_func) |
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{
|
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PCIIORegion *r; |
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|
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if ((unsigned int)region_num >= 6) |
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return;
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r = &pci_dev->io_regions[region_num]; |
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r->addr = -1;
|
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r->size = size; |
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r->type = type; |
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r->map_func = map_func; |
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} |
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|
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static void pci_addr_writel(void* opaque, uint32_t addr, uint32_t val) |
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{
|
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PCIBridge *s = opaque; |
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s->config_reg = val; |
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} |
| 117 |
|
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static uint32_t pci_addr_readl(void* opaque, uint32_t addr) |
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{
|
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PCIBridge *s = opaque; |
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return s->config_reg;
|
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} |
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|
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static void pci_update_mappings(PCIDevice *d) |
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{
|
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PCIIORegion *r; |
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int cmd, i;
|
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uint32_t last_addr, new_addr; |
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|
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cmd = le16_to_cpu(*(uint16_t *)(d->config + PCI_COMMAND)); |
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for(i = 0; i < 6; i++) { |
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r = &d->io_regions[i]; |
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if (r->size != 0) { |
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if (r->type & PCI_ADDRESS_SPACE_IO) {
|
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if (cmd & PCI_COMMAND_IO) {
|
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new_addr = le32_to_cpu(*(uint32_t *)(d->config + |
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0x10 + i * 4)); |
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new_addr = new_addr & ~(r->size - 1);
|
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last_addr = new_addr + r->size - 1;
|
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/* NOTE: we have only 64K ioports on PC */
|
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if (last_addr <= new_addr || new_addr == 0 || |
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last_addr >= 0x10000) {
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new_addr = -1;
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} |
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} else {
|
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new_addr = -1;
|
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} |
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} else {
|
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if (cmd & PCI_COMMAND_MEMORY) {
|
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new_addr = le32_to_cpu(*(uint32_t *)(d->config + |
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0x10 + i * 4)); |
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new_addr = new_addr & ~(r->size - 1);
|
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last_addr = new_addr + r->size - 1;
|
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/* NOTE: we do not support wrapping */
|
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/* XXX: as we cannot support really dynamic
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mappings, we handle specific values as invalid
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mappings. */
|
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if (last_addr <= new_addr || new_addr == 0 || |
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last_addr == -1) {
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new_addr = -1;
|
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} |
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} else {
|
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new_addr = -1;
|
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} |
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} |
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/* now do the real mapping */
|
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if (new_addr != r->addr) {
|
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if (r->addr != -1) { |
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if (r->type & PCI_ADDRESS_SPACE_IO) {
|
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int class;
|
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/* NOTE: specific hack for IDE in PC case:
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only one byte must be mapped. */
|
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class = d->config[0x0a] | (d->config[0x0b] << 8); |
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if (class == 0x0101 && r->size == 4) { |
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isa_unassign_ioport(r->addr + 2, 1); |
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} else {
|
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isa_unassign_ioport(r->addr, r->size); |
| 178 |
} |
| 179 |
} else {
|
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cpu_register_physical_memory(r->addr + pci_mem_base, |
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r->size, |
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IO_MEM_UNASSIGNED); |
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} |
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} |
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r->addr = new_addr; |
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if (r->addr != -1) { |
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r->map_func(d, i, r->addr, r->size, r->type); |
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} |
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} |
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} |
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} |
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} |
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|
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uint32_t pci_default_read_config(PCIDevice *d, |
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uint32_t address, int len)
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{
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uint32_t val; |
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switch(len) {
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case 1: |
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val = d->config[address]; |
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break;
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case 2: |
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val = le16_to_cpu(*(uint16_t *)(d->config + address)); |
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break;
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default:
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case 4: |
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val = le32_to_cpu(*(uint32_t *)(d->config + address)); |
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break;
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} |
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return val;
|
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} |
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|
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void pci_default_write_config(PCIDevice *d,
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uint32_t address, uint32_t val, int len)
|
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{
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int can_write, i;
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uint32_t end, addr; |
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|
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if (len == 4 && (address >= 0x10 && address < 0x10 + 4 * 6)) { |
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PCIIORegion *r; |
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int reg;
|
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|
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reg = (address - 0x10) >> 2; |
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r = &d->io_regions[reg]; |
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if (r->size == 0) |
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goto default_config;
|
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/* compute the stored value */
|
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val &= ~(r->size - 1);
|
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val |= r->type; |
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*(uint32_t *)(d->config + 0x10 + reg * 4) = cpu_to_le32(val); |
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pci_update_mappings(d); |
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return;
|
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} |
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default_config:
|
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/* not efficient, but simple */
|
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addr = address; |
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for(i = 0; i < len; i++) { |
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/* default read/write accesses */
|
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switch(addr) {
|
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case 0x00: |
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case 0x01: |
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case 0x02: |
| 243 |
case 0x03: |
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case 0x08: |
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case 0x09: |
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case 0x0a: |
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case 0x0b: |
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case 0x0e: |
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case 0x3d: |
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can_write = 0;
|
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break;
|
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default:
|
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can_write = 1;
|
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break;
|
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} |
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if (can_write) {
|
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d->config[addr] = val; |
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} |
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addr++; |
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val >>= 8;
|
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} |
| 262 |
|
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end = address + len; |
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if (end > PCI_COMMAND && address < (PCI_COMMAND + 2)) { |
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/* if the command register is modified, we must modify the mappings */
|
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pci_update_mappings(d); |
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} |
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} |
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|
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static void pci_data_write(void *opaque, uint32_t addr, |
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uint32_t val, int len)
|
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{
|
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PCIBridge *s = opaque; |
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PCIDevice **bus, *pci_dev; |
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int config_addr;
|
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|
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#if defined(DEBUG_PCI) && 0 |
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printf("pci_data_write: addr=%08x val=%08x len=%d\n",
|
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s->config_reg, val, len); |
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#endif
|
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if (!(s->config_reg & (1 << 31))) { |
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return;
|
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} |
| 284 |
if ((s->config_reg & 0x3) != 0) { |
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return;
|
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} |
| 287 |
bus = s->pci_bus[(s->config_reg >> 16) & 0xff]; |
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if (!bus)
|
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return;
|
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pci_dev = bus[(s->config_reg >> 8) & 0xff]; |
| 291 |
if (!pci_dev)
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return;
|
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config_addr = (s->config_reg & 0xfc) | (addr & 3); |
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#if defined(DEBUG_PCI)
|
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printf("pci_config_write: %s: addr=%02x val=%08x len=%d\n",
|
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pci_dev->name, config_addr, val, len); |
| 297 |
#endif
|
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pci_dev->config_write(pci_dev, config_addr, val, len); |
| 299 |
} |
| 300 |
|
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static uint32_t pci_data_read(void *opaque, uint32_t addr, |
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int len)
|
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{
|
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PCIBridge *s = opaque; |
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PCIDevice **bus, *pci_dev; |
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int config_addr;
|
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uint32_t val; |
| 308 |
|
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if (!(s->config_reg & (1 << 31))) |
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goto fail;
|
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if ((s->config_reg & 0x3) != 0) |
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goto fail;
|
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bus = s->pci_bus[(s->config_reg >> 16) & 0xff]; |
| 314 |
if (!bus)
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goto fail;
|
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pci_dev = bus[(s->config_reg >> 8) & 0xff]; |
| 317 |
if (!pci_dev) {
|
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fail:
|
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switch(len) {
|
| 320 |
case 1: |
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val = 0xff;
|
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break;
|
| 323 |
case 2: |
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val = 0xffff;
|
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break;
|
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default:
|
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case 4: |
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val = 0xffffffff;
|
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break;
|
| 330 |
} |
| 331 |
goto the_end;
|
| 332 |
} |
| 333 |
config_addr = (s->config_reg & 0xfc) | (addr & 3); |
| 334 |
val = pci_dev->config_read(pci_dev, config_addr, len); |
| 335 |
#if defined(DEBUG_PCI)
|
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printf("pci_config_read: %s: addr=%02x val=%08x len=%d\n",
|
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pci_dev->name, config_addr, val, len); |
| 338 |
#endif
|
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the_end:
|
| 340 |
#if defined(DEBUG_PCI) && 0 |
| 341 |
printf("pci_data_read: addr=%08x val=%08x len=%d\n",
|
| 342 |
s->config_reg, val, len); |
| 343 |
#endif
|
| 344 |
return val;
|
| 345 |
} |
| 346 |
|
| 347 |
static void pci_data_writeb(void* opaque, uint32_t addr, uint32_t val) |
| 348 |
{
|
| 349 |
pci_data_write(opaque, addr, val, 1);
|
| 350 |
} |
| 351 |
|
| 352 |
static void pci_data_writew(void* opaque, uint32_t addr, uint32_t val) |
| 353 |
{
|
| 354 |
pci_data_write(opaque, addr, val, 2);
|
| 355 |
} |
| 356 |
|
| 357 |
static void pci_data_writel(void* opaque, uint32_t addr, uint32_t val) |
| 358 |
{
|
| 359 |
pci_data_write(opaque, addr, val, 4);
|
| 360 |
} |
| 361 |
|
| 362 |
static uint32_t pci_data_readb(void* opaque, uint32_t addr) |
| 363 |
{
|
| 364 |
return pci_data_read(opaque, addr, 1); |
| 365 |
} |
| 366 |
|
| 367 |
static uint32_t pci_data_readw(void* opaque, uint32_t addr) |
| 368 |
{
|
| 369 |
return pci_data_read(opaque, addr, 2); |
| 370 |
} |
| 371 |
|
| 372 |
static uint32_t pci_data_readl(void* opaque, uint32_t addr) |
| 373 |
{
|
| 374 |
return pci_data_read(opaque, addr, 4); |
| 375 |
} |
| 376 |
|
| 377 |
/* i440FX PCI bridge */
|
| 378 |
|
| 379 |
void i440fx_init(void) |
| 380 |
{
|
| 381 |
PCIBridge *s = &pci_bridge; |
| 382 |
PCIDevice *d; |
| 383 |
|
| 384 |
register_ioport_write(0xcf8, 4, 4, pci_addr_writel, s); |
| 385 |
register_ioport_read(0xcf8, 4, 4, pci_addr_readl, s); |
| 386 |
|
| 387 |
register_ioport_write(0xcfc, 4, 1, pci_data_writeb, s); |
| 388 |
register_ioport_write(0xcfc, 4, 2, pci_data_writew, s); |
| 389 |
register_ioport_write(0xcfc, 4, 4, pci_data_writel, s); |
| 390 |
register_ioport_read(0xcfc, 4, 1, pci_data_readb, s); |
| 391 |
register_ioport_read(0xcfc, 4, 2, pci_data_readw, s); |
| 392 |
register_ioport_read(0xcfc, 4, 4, pci_data_readl, s); |
| 393 |
|
| 394 |
d = pci_register_device("i440FX", sizeof(PCIDevice), 0, 0, |
| 395 |
NULL, NULL); |
| 396 |
|
| 397 |
d->config[0x00] = 0x86; // vendor_id |
| 398 |
d->config[0x01] = 0x80; |
| 399 |
d->config[0x02] = 0x37; // device_id |
| 400 |
d->config[0x03] = 0x12; |
| 401 |
d->config[0x08] = 0x02; // revision |
| 402 |
d->config[0x0a] = 0x04; // class_sub = pci2pci |
| 403 |
d->config[0x0b] = 0x06; // class_base = PCI_bridge |
| 404 |
d->config[0x0c] = 0x01; // line_size in 32 bit words |
| 405 |
d->config[0x0e] = 0x01; // header_type |
| 406 |
} |
| 407 |
|
| 408 |
/* PIIX3 PCI to ISA bridge */
|
| 409 |
|
| 410 |
typedef struct PIIX3State { |
| 411 |
PCIDevice dev; |
| 412 |
} PIIX3State; |
| 413 |
|
| 414 |
PIIX3State *piix3_state; |
| 415 |
|
| 416 |
static void piix3_reset(PIIX3State *d) |
| 417 |
{
|
| 418 |
uint8_t *pci_conf = d->dev.config; |
| 419 |
|
| 420 |
pci_conf[0x04] = 0x07; // master, memory and I/O |
| 421 |
pci_conf[0x05] = 0x00; |
| 422 |
pci_conf[0x06] = 0x00; |
| 423 |
pci_conf[0x07] = 0x02; // PCI_status_devsel_medium |
| 424 |
pci_conf[0x4c] = 0x4d; |
| 425 |
pci_conf[0x4e] = 0x03; |
| 426 |
pci_conf[0x4f] = 0x00; |
| 427 |
pci_conf[0x60] = 0x80; |
| 428 |
pci_conf[0x69] = 0x02; |
| 429 |
pci_conf[0x70] = 0x80; |
| 430 |
pci_conf[0x76] = 0x0c; |
| 431 |
pci_conf[0x77] = 0x0c; |
| 432 |
pci_conf[0x78] = 0x02; |
| 433 |
pci_conf[0x79] = 0x00; |
| 434 |
pci_conf[0x80] = 0x00; |
| 435 |
pci_conf[0x82] = 0x00; |
| 436 |
pci_conf[0xa0] = 0x08; |
| 437 |
pci_conf[0xa0] = 0x08; |
| 438 |
pci_conf[0xa2] = 0x00; |
| 439 |
pci_conf[0xa3] = 0x00; |
| 440 |
pci_conf[0xa4] = 0x00; |
| 441 |
pci_conf[0xa5] = 0x00; |
| 442 |
pci_conf[0xa6] = 0x00; |
| 443 |
pci_conf[0xa7] = 0x00; |
| 444 |
pci_conf[0xa8] = 0x0f; |
| 445 |
pci_conf[0xaa] = 0x00; |
| 446 |
pci_conf[0xab] = 0x00; |
| 447 |
pci_conf[0xac] = 0x00; |
| 448 |
pci_conf[0xae] = 0x00; |
| 449 |
} |
| 450 |
|
| 451 |
void piix3_init(void) |
| 452 |
{
|
| 453 |
PIIX3State *d; |
| 454 |
uint8_t *pci_conf; |
| 455 |
|
| 456 |
d = (PIIX3State *)pci_register_device("PIIX3", sizeof(PIIX3State), |
| 457 |
0, -1, |
| 458 |
NULL, NULL); |
| 459 |
piix3_state = d; |
| 460 |
pci_conf = d->dev.config; |
| 461 |
|
| 462 |
pci_conf[0x00] = 0x86; // Intel |
| 463 |
pci_conf[0x01] = 0x80; |
| 464 |
pci_conf[0x02] = 0x00; // 82371SB PIIX3 PCI-to-ISA bridge (Step A1) |
| 465 |
pci_conf[0x03] = 0x70; |
| 466 |
pci_conf[0x0a] = 0x01; // class_sub = PCI_ISA |
| 467 |
pci_conf[0x0b] = 0x06; // class_base = PCI_bridge |
| 468 |
pci_conf[0x0e] = 0x80; // header_type = PCI_multifunction, generic |
| 469 |
|
| 470 |
piix3_reset(d); |
| 471 |
} |
| 472 |
|
| 473 |
/* PREP pci init */
|
| 474 |
|
| 475 |
static inline void set_config(PCIBridge *s, target_phys_addr_t addr) |
| 476 |
{
|
| 477 |
int devfn, i;
|
| 478 |
|
| 479 |
for(i = 0; i < 11; i++) { |
| 480 |
if ((addr & (1 << (11 + i))) != 0) |
| 481 |
break;
|
| 482 |
} |
| 483 |
devfn = ((addr >> 8) & 7) | (i << 3); |
| 484 |
s->config_reg = 0x80000000 | (addr & 0xfc) | (devfn << 8); |
| 485 |
} |
| 486 |
|
| 487 |
static void PPC_PCIIO_writeb (target_phys_addr_t addr, uint32_t val) |
| 488 |
{
|
| 489 |
PCIBridge *s = &pci_bridge; |
| 490 |
set_config(s, addr); |
| 491 |
pci_data_write(s, addr, val, 1);
|
| 492 |
} |
| 493 |
|
| 494 |
static void PPC_PCIIO_writew (target_phys_addr_t addr, uint32_t val) |
| 495 |
{
|
| 496 |
PCIBridge *s = &pci_bridge; |
| 497 |
set_config(s, addr); |
| 498 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 499 |
val = bswap16(val); |
| 500 |
#endif
|
| 501 |
pci_data_write(s, addr, val, 2);
|
| 502 |
} |
| 503 |
|
| 504 |
static void PPC_PCIIO_writel (target_phys_addr_t addr, uint32_t val) |
| 505 |
{
|
| 506 |
PCIBridge *s = &pci_bridge; |
| 507 |
set_config(s, addr); |
| 508 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 509 |
val = bswap32(val); |
| 510 |
#endif
|
| 511 |
pci_data_write(s, addr, val, 4);
|
| 512 |
} |
| 513 |
|
| 514 |
static uint32_t PPC_PCIIO_readb (target_phys_addr_t addr)
|
| 515 |
{
|
| 516 |
PCIBridge *s = &pci_bridge; |
| 517 |
uint32_t val; |
| 518 |
set_config(s, addr); |
| 519 |
val = pci_data_read(s, addr, 1);
|
| 520 |
return val;
|
| 521 |
} |
| 522 |
|
| 523 |
static uint32_t PPC_PCIIO_readw (target_phys_addr_t addr)
|
| 524 |
{
|
| 525 |
PCIBridge *s = &pci_bridge; |
| 526 |
uint32_t val; |
| 527 |
set_config(s, addr); |
| 528 |
val = pci_data_read(s, addr, 2);
|
| 529 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 530 |
val = bswap16(val); |
| 531 |
#endif
|
| 532 |
return val;
|
| 533 |
} |
| 534 |
|
| 535 |
static uint32_t PPC_PCIIO_readl (target_phys_addr_t addr)
|
| 536 |
{
|
| 537 |
PCIBridge *s = &pci_bridge; |
| 538 |
uint32_t val; |
| 539 |
set_config(s, addr); |
| 540 |
val = pci_data_read(s, addr, 4);
|
| 541 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 542 |
val = bswap32(val); |
| 543 |
#endif
|
| 544 |
return val;
|
| 545 |
} |
| 546 |
|
| 547 |
static CPUWriteMemoryFunc *PPC_PCIIO_write[] = {
|
| 548 |
&PPC_PCIIO_writeb, |
| 549 |
&PPC_PCIIO_writew, |
| 550 |
&PPC_PCIIO_writel, |
| 551 |
}; |
| 552 |
|
| 553 |
static CPUReadMemoryFunc *PPC_PCIIO_read[] = {
|
| 554 |
&PPC_PCIIO_readb, |
| 555 |
&PPC_PCIIO_readw, |
| 556 |
&PPC_PCIIO_readl, |
| 557 |
}; |
| 558 |
|
| 559 |
void pci_prep_init(void) |
| 560 |
{
|
| 561 |
PCIDevice *d; |
| 562 |
int PPC_io_memory;
|
| 563 |
|
| 564 |
PPC_io_memory = cpu_register_io_memory(0, PPC_PCIIO_read, PPC_PCIIO_write);
|
| 565 |
cpu_register_physical_memory(0x80800000, 0x00400000, PPC_io_memory); |
| 566 |
|
| 567 |
d = pci_register_device("PREP PCI Bridge", sizeof(PCIDevice), 0, 0, |
| 568 |
NULL, NULL); |
| 569 |
|
| 570 |
/* XXX: put correct IDs */
|
| 571 |
d->config[0x00] = 0x11; // vendor_id |
| 572 |
d->config[0x01] = 0x10; |
| 573 |
d->config[0x02] = 0x26; // device_id |
| 574 |
d->config[0x03] = 0x00; |
| 575 |
d->config[0x08] = 0x02; // revision |
| 576 |
d->config[0x0a] = 0x04; // class_sub = pci2pci |
| 577 |
d->config[0x0b] = 0x06; // class_base = PCI_bridge |
| 578 |
d->config[0x0e] = 0x01; // header_type |
| 579 |
} |
| 580 |
|
| 581 |
|
| 582 |
/* pmac pci init */
|
| 583 |
|
| 584 |
static void pci_pmac_config_writel (target_phys_addr_t addr, uint32_t val) |
| 585 |
{
|
| 586 |
PCIBridge *s = &pci_bridge; |
| 587 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 588 |
val = bswap32(val); |
| 589 |
#endif
|
| 590 |
s->config_reg = val; |
| 591 |
} |
| 592 |
|
| 593 |
static uint32_t pci_pmac_config_readl (target_phys_addr_t addr)
|
| 594 |
{
|
| 595 |
PCIBridge *s = &pci_bridge; |
| 596 |
uint32_t val; |
| 597 |
|
| 598 |
val = s->config_reg; |
| 599 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 600 |
val = bswap32(val); |
| 601 |
#endif
|
| 602 |
return val;
|
| 603 |
} |
| 604 |
|
| 605 |
static CPUWriteMemoryFunc *pci_pmac_config_write[] = {
|
| 606 |
&pci_pmac_config_writel, |
| 607 |
&pci_pmac_config_writel, |
| 608 |
&pci_pmac_config_writel, |
| 609 |
}; |
| 610 |
|
| 611 |
static CPUReadMemoryFunc *pci_pmac_config_read[] = {
|
| 612 |
&pci_pmac_config_readl, |
| 613 |
&pci_pmac_config_readl, |
| 614 |
&pci_pmac_config_readl, |
| 615 |
}; |
| 616 |
|
| 617 |
static void pci_pmac_writeb (target_phys_addr_t addr, uint32_t val) |
| 618 |
{
|
| 619 |
PCIBridge *s = &pci_bridge; |
| 620 |
pci_data_write(s, addr, val, 1);
|
| 621 |
} |
| 622 |
|
| 623 |
static void pci_pmac_writew (target_phys_addr_t addr, uint32_t val) |
| 624 |
{
|
| 625 |
PCIBridge *s = &pci_bridge; |
| 626 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 627 |
val = bswap16(val); |
| 628 |
#endif
|
| 629 |
pci_data_write(s, addr, val, 2);
|
| 630 |
} |
| 631 |
|
| 632 |
static void pci_pmac_writel (target_phys_addr_t addr, uint32_t val) |
| 633 |
{
|
| 634 |
PCIBridge *s = &pci_bridge; |
| 635 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 636 |
val = bswap32(val); |
| 637 |
#endif
|
| 638 |
pci_data_write(s, addr, val, 4);
|
| 639 |
} |
| 640 |
|
| 641 |
static uint32_t pci_pmac_readb (target_phys_addr_t addr)
|
| 642 |
{
|
| 643 |
PCIBridge *s = &pci_bridge; |
| 644 |
uint32_t val; |
| 645 |
val = pci_data_read(s, addr, 1);
|
| 646 |
return val;
|
| 647 |
} |
| 648 |
|
| 649 |
static uint32_t pci_pmac_readw (target_phys_addr_t addr)
|
| 650 |
{
|
| 651 |
PCIBridge *s = &pci_bridge; |
| 652 |
uint32_t val; |
| 653 |
val = pci_data_read(s, addr, 2);
|
| 654 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 655 |
val = bswap16(val); |
| 656 |
#endif
|
| 657 |
return val;
|
| 658 |
} |
| 659 |
|
| 660 |
static uint32_t pci_pmac_readl (target_phys_addr_t addr)
|
| 661 |
{
|
| 662 |
PCIBridge *s = &pci_bridge; |
| 663 |
uint32_t val; |
| 664 |
|
| 665 |
val = pci_data_read(s, addr, 4);
|
| 666 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 667 |
val = bswap32(val); |
| 668 |
#endif
|
| 669 |
return val;
|
| 670 |
} |
| 671 |
|
| 672 |
static CPUWriteMemoryFunc *pci_pmac_write[] = {
|
| 673 |
&pci_pmac_writeb, |
| 674 |
&pci_pmac_writew, |
| 675 |
&pci_pmac_writel, |
| 676 |
}; |
| 677 |
|
| 678 |
static CPUReadMemoryFunc *pci_pmac_read[] = {
|
| 679 |
&pci_pmac_readb, |
| 680 |
&pci_pmac_readw, |
| 681 |
&pci_pmac_readl, |
| 682 |
}; |
| 683 |
|
| 684 |
void pci_pmac_init(void) |
| 685 |
{
|
| 686 |
PCIDevice *d; |
| 687 |
int pci_mem_config, pci_mem_data;
|
| 688 |
|
| 689 |
pci_mem_config = cpu_register_io_memory(0, pci_pmac_config_read,
|
| 690 |
pci_pmac_config_write); |
| 691 |
pci_mem_data = cpu_register_io_memory(0, pci_pmac_read, pci_pmac_write);
|
| 692 |
|
| 693 |
cpu_register_physical_memory(0xfec00000, 0x1000, pci_mem_config); |
| 694 |
cpu_register_physical_memory(0xfee00000, 0x1000, pci_mem_data); |
| 695 |
|
| 696 |
d = pci_register_device("MPC106", sizeof(PCIDevice), 0, 0, |
| 697 |
NULL, NULL); |
| 698 |
|
| 699 |
/* same values as PearPC - check this */
|
| 700 |
d->config[0x00] = 0x11; // vendor_id |
| 701 |
d->config[0x01] = 0x10; |
| 702 |
d->config[0x02] = 0x26; // device_id |
| 703 |
d->config[0x03] = 0x00; |
| 704 |
d->config[0x08] = 0x02; // revision |
| 705 |
d->config[0x0a] = 0x04; // class_sub = pci2pci |
| 706 |
d->config[0x0b] = 0x06; // class_base = PCI_bridge |
| 707 |
d->config[0x0e] = 0x01; // header_type |
| 708 |
|
| 709 |
d->config[0x18] = 0x0; // primary_bus |
| 710 |
d->config[0x19] = 0x1; // secondary_bus |
| 711 |
d->config[0x1a] = 0x1; // subordinate_bus |
| 712 |
d->config[0x1c] = 0x10; // io_base |
| 713 |
d->config[0x1d] = 0x20; // io_limit |
| 714 |
|
| 715 |
d->config[0x20] = 0x80; // memory_base |
| 716 |
d->config[0x21] = 0x80; |
| 717 |
d->config[0x22] = 0x90; // memory_limit |
| 718 |
d->config[0x23] = 0x80; |
| 719 |
|
| 720 |
d->config[0x24] = 0x00; // prefetchable_memory_base |
| 721 |
d->config[0x25] = 0x84; |
| 722 |
d->config[0x26] = 0x00; // prefetchable_memory_limit |
| 723 |
d->config[0x27] = 0x85; |
| 724 |
} |
| 725 |
|
| 726 |
/***********************************************************/
|
| 727 |
/* generic PCI irq support */
|
| 728 |
|
| 729 |
/* return the global irq number corresponding to a given device irq
|
| 730 |
pin. We could also use the bus number to have a more precise
|
| 731 |
mapping. */
|
| 732 |
static inline int pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) |
| 733 |
{
|
| 734 |
int slot_addend;
|
| 735 |
slot_addend = (pci_dev->devfn >> 3);
|
| 736 |
return (irq_num + slot_addend) & 3; |
| 737 |
} |
| 738 |
|
| 739 |
/* 0 <= irq_num <= 3. level must be 0 or 1 */
|
| 740 |
#ifdef TARGET_PPC
|
| 741 |
void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level) |
| 742 |
{
|
| 743 |
} |
| 744 |
#else
|
| 745 |
void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level) |
| 746 |
{
|
| 747 |
int irq_index, shift, pic_irq, pic_level;
|
| 748 |
uint32_t *p; |
| 749 |
|
| 750 |
irq_num = pci_slot_get_pirq(pci_dev, irq_num); |
| 751 |
irq_index = pci_dev->irq_index; |
| 752 |
p = &pci_irq_levels[irq_num][irq_index >> 5];
|
| 753 |
shift = (irq_index & 0x1f);
|
| 754 |
*p = (*p & ~(1 << shift)) | (level << shift);
|
| 755 |
|
| 756 |
/* now we change the pic irq level according to the piix irq mappings */
|
| 757 |
pic_irq = piix3_state->dev.config[0x60 + irq_num];
|
| 758 |
if (pic_irq < 16) { |
| 759 |
/* the pic level is the logical OR of all the PCI irqs mapped
|
| 760 |
to it */
|
| 761 |
pic_level = 0;
|
| 762 |
#if (PCI_IRQ_WORDS == 2) |
| 763 |
pic_level = ((pci_irq_levels[irq_num][0] |
|
| 764 |
pci_irq_levels[irq_num][1]) != 0); |
| 765 |
#else
|
| 766 |
{
|
| 767 |
int i;
|
| 768 |
pic_level = 0;
|
| 769 |
for(i = 0; i < PCI_IRQ_WORDS; i++) { |
| 770 |
if (pci_irq_levels[irq_num][i]) {
|
| 771 |
pic_level = 1;
|
| 772 |
break;
|
| 773 |
} |
| 774 |
} |
| 775 |
} |
| 776 |
#endif
|
| 777 |
pic_set_irq(pic_irq, pic_level); |
| 778 |
} |
| 779 |
} |
| 780 |
#endif
|
| 781 |
|
| 782 |
/***********************************************************/
|
| 783 |
/* monitor info on PCI */
|
| 784 |
|
| 785 |
static void pci_info_device(PCIDevice *d) |
| 786 |
{
|
| 787 |
int i, class;
|
| 788 |
PCIIORegion *r; |
| 789 |
|
| 790 |
printf(" Bus %2d, device %3d, function %d:\n",
|
| 791 |
d->bus_num, d->devfn >> 3, d->devfn & 7); |
| 792 |
class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE))); |
| 793 |
printf(" ");
|
| 794 |
switch(class) {
|
| 795 |
case 0x0101: |
| 796 |
printf("IDE controller");
|
| 797 |
break;
|
| 798 |
case 0x0200: |
| 799 |
printf("Ethernet controller");
|
| 800 |
break;
|
| 801 |
case 0x0300: |
| 802 |
printf("VGA controller");
|
| 803 |
break;
|
| 804 |
default:
|
| 805 |
printf("Class %04x", class);
|
| 806 |
break;
|
| 807 |
} |
| 808 |
printf(": PCI device %04x:%04x\n",
|
| 809 |
le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))), |
| 810 |
le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID)))); |
| 811 |
|
| 812 |
if (d->config[PCI_INTERRUPT_PIN] != 0) { |
| 813 |
printf(" IRQ %d.\n", d->config[PCI_INTERRUPT_LINE]);
|
| 814 |
} |
| 815 |
for(i = 0;i < 6; i++) { |
| 816 |
r = &d->io_regions[i]; |
| 817 |
if (r->size != 0) { |
| 818 |
printf(" BAR%d: ", i);
|
| 819 |
if (r->type & PCI_ADDRESS_SPACE_IO) {
|
| 820 |
printf("I/O at 0x%04x [0x%04x].\n",
|
| 821 |
r->addr, r->addr + r->size - 1);
|
| 822 |
} else {
|
| 823 |
printf("32 bit memory at 0x%08x [0x%08x].\n",
|
| 824 |
r->addr, r->addr + r->size - 1);
|
| 825 |
} |
| 826 |
} |
| 827 |
} |
| 828 |
} |
| 829 |
|
| 830 |
void pci_info(void) |
| 831 |
{
|
| 832 |
PCIBridge *s = &pci_bridge; |
| 833 |
PCIDevice **bus; |
| 834 |
int bus_num, devfn;
|
| 835 |
|
| 836 |
for(bus_num = 0; bus_num < 256; bus_num++) { |
| 837 |
bus = s->pci_bus[bus_num]; |
| 838 |
if (bus) {
|
| 839 |
for(devfn = 0; devfn < 256; devfn++) { |
| 840 |
if (bus[devfn])
|
| 841 |
pci_info_device(bus[devfn]); |
| 842 |
} |
| 843 |
} |
| 844 |
} |
| 845 |
} |
| 846 |
|
| 847 |
/***********************************************************/
|
| 848 |
/* XXX: the following should be moved to the PC BIOS */
|
| 849 |
|
| 850 |
static uint32_t isa_inb(uint32_t addr)
|
| 851 |
{
|
| 852 |
return cpu_inb(cpu_single_env, addr);
|
| 853 |
} |
| 854 |
|
| 855 |
static void isa_outb(uint32_t val, uint32_t addr) |
| 856 |
{
|
| 857 |
cpu_outb(cpu_single_env, addr, val); |
| 858 |
} |
| 859 |
|
| 860 |
static uint32_t isa_inw(uint32_t addr)
|
| 861 |
{
|
| 862 |
return cpu_inw(cpu_single_env, addr);
|
| 863 |
} |
| 864 |
|
| 865 |
static void isa_outw(uint32_t val, uint32_t addr) |
| 866 |
{
|
| 867 |
cpu_outw(cpu_single_env, addr, val); |
| 868 |
} |
| 869 |
|
| 870 |
static uint32_t isa_inl(uint32_t addr)
|
| 871 |
{
|
| 872 |
return cpu_inl(cpu_single_env, addr);
|
| 873 |
} |
| 874 |
|
| 875 |
static void isa_outl(uint32_t val, uint32_t addr) |
| 876 |
{
|
| 877 |
cpu_outl(cpu_single_env, addr, val); |
| 878 |
} |
| 879 |
|
| 880 |
static void pci_config_writel(PCIDevice *d, uint32_t addr, uint32_t val) |
| 881 |
{
|
| 882 |
PCIBridge *s = &pci_bridge; |
| 883 |
s->config_reg = 0x80000000 | (d->bus_num << 16) | |
| 884 |
(d->devfn << 8) | addr;
|
| 885 |
pci_data_write(s, 0, val, 4); |
| 886 |
} |
| 887 |
|
| 888 |
static void pci_config_writew(PCIDevice *d, uint32_t addr, uint32_t val) |
| 889 |
{
|
| 890 |
PCIBridge *s = &pci_bridge; |
| 891 |
s->config_reg = 0x80000000 | (d->bus_num << 16) | |
| 892 |
(d->devfn << 8) | (addr & ~3); |
| 893 |
pci_data_write(s, addr & 3, val, 2); |
| 894 |
} |
| 895 |
|
| 896 |
static void pci_config_writeb(PCIDevice *d, uint32_t addr, uint32_t val) |
| 897 |
{
|
| 898 |
PCIBridge *s = &pci_bridge; |
| 899 |
s->config_reg = 0x80000000 | (d->bus_num << 16) | |
| 900 |
(d->devfn << 8) | (addr & ~3); |
| 901 |
pci_data_write(s, addr & 3, val, 1); |
| 902 |
} |
| 903 |
|
| 904 |
static uint32_t pci_config_readl(PCIDevice *d, uint32_t addr)
|
| 905 |
{
|
| 906 |
PCIBridge *s = &pci_bridge; |
| 907 |
s->config_reg = 0x80000000 | (d->bus_num << 16) | |
| 908 |
(d->devfn << 8) | addr;
|
| 909 |
return pci_data_read(s, 0, 4); |
| 910 |
} |
| 911 |
|
| 912 |
static uint32_t pci_config_readw(PCIDevice *d, uint32_t addr)
|
| 913 |
{
|
| 914 |
PCIBridge *s = &pci_bridge; |
| 915 |
s->config_reg = 0x80000000 | (d->bus_num << 16) | |
| 916 |
(d->devfn << 8) | (addr & ~3); |
| 917 |
return pci_data_read(s, addr & 3, 2); |
| 918 |
} |
| 919 |
|
| 920 |
static uint32_t pci_config_readb(PCIDevice *d, uint32_t addr)
|
| 921 |
{
|
| 922 |
PCIBridge *s = &pci_bridge; |
| 923 |
s->config_reg = 0x80000000 | (d->bus_num << 16) | |
| 924 |
(d->devfn << 8) | (addr & ~3); |
| 925 |
return pci_data_read(s, addr & 3, 1); |
| 926 |
} |
| 927 |
|
| 928 |
static uint32_t pci_bios_io_addr;
|
| 929 |
static uint32_t pci_bios_mem_addr;
|
| 930 |
/* host irqs corresponding to PCI irqs A-D */
|
| 931 |
static uint8_t pci_irqs[4] = { 11, 9, 11, 9 }; |
| 932 |
|
| 933 |
static void pci_set_io_region_addr(PCIDevice *d, int region_num, uint32_t addr) |
| 934 |
{
|
| 935 |
PCIIORegion *r; |
| 936 |
uint16_t cmd; |
| 937 |
|
| 938 |
pci_config_writel(d, 0x10 + region_num * 4, addr); |
| 939 |
r = &d->io_regions[region_num]; |
| 940 |
|
| 941 |
/* enable memory mappings */
|
| 942 |
cmd = pci_config_readw(d, PCI_COMMAND); |
| 943 |
if (r->type & PCI_ADDRESS_SPACE_IO)
|
| 944 |
cmd |= 1;
|
| 945 |
else
|
| 946 |
cmd |= 2;
|
| 947 |
pci_config_writew(d, PCI_COMMAND, cmd); |
| 948 |
} |
| 949 |
|
| 950 |
static void pci_bios_init_device(PCIDevice *d) |
| 951 |
{
|
| 952 |
int class;
|
| 953 |
PCIIORegion *r; |
| 954 |
uint32_t *paddr; |
| 955 |
int i, pin, pic_irq, vendor_id, device_id;
|
| 956 |
|
| 957 |
class = pci_config_readw(d, PCI_CLASS_DEVICE); |
| 958 |
switch(class) {
|
| 959 |
case 0x0101: |
| 960 |
vendor_id = pci_config_readw(d, PCI_VENDOR_ID); |
| 961 |
device_id = pci_config_readw(d, PCI_DEVICE_ID); |
| 962 |
if (vendor_id == 0x8086 && device_id == 0x7010) { |
| 963 |
/* PIIX3 IDE */
|
| 964 |
pci_config_writew(d, PCI_COMMAND, PCI_COMMAND_IO); |
| 965 |
pci_config_writew(d, 0x40, 0x8000); // enable IDE0 |
| 966 |
} else {
|
| 967 |
/* IDE: we map it as in ISA mode */
|
| 968 |
pci_set_io_region_addr(d, 0, 0x1f0); |
| 969 |
pci_set_io_region_addr(d, 1, 0x3f4); |
| 970 |
pci_set_io_region_addr(d, 2, 0x170); |
| 971 |
pci_set_io_region_addr(d, 3, 0x374); |
| 972 |
} |
| 973 |
break;
|
| 974 |
case 0x0300: |
| 975 |
/* VGA: map frame buffer to default Bochs VBE address */
|
| 976 |
pci_set_io_region_addr(d, 0, 0xE0000000); |
| 977 |
break;
|
| 978 |
default:
|
| 979 |
/* default memory mappings */
|
| 980 |
for(i = 0; i < 6; i++) { |
| 981 |
r = &d->io_regions[i]; |
| 982 |
if (r->size) {
|
| 983 |
if (r->type & PCI_ADDRESS_SPACE_IO)
|
| 984 |
paddr = &pci_bios_io_addr; |
| 985 |
else
|
| 986 |
paddr = &pci_bios_mem_addr; |
| 987 |
*paddr = (*paddr + r->size - 1) & ~(r->size - 1); |
| 988 |
pci_set_io_region_addr(d, i, *paddr); |
| 989 |
*paddr += r->size; |
| 990 |
} |
| 991 |
} |
| 992 |
break;
|
| 993 |
} |
| 994 |
|
| 995 |
/* map the interrupt */
|
| 996 |
pin = pci_config_readb(d, PCI_INTERRUPT_PIN); |
| 997 |
if (pin != 0) { |
| 998 |
pin = pci_slot_get_pirq(d, pin - 1);
|
| 999 |
pic_irq = pci_irqs[pin]; |
| 1000 |
pci_config_writeb(d, PCI_INTERRUPT_LINE, pic_irq); |
| 1001 |
} |
| 1002 |
} |
| 1003 |
|
| 1004 |
/*
|
| 1005 |
* This function initializes the PCI devices as a normal PCI BIOS
|
| 1006 |
* would do. It is provided just in case the BIOS has no support for
|
| 1007 |
* PCI.
|
| 1008 |
*/
|
| 1009 |
void pci_bios_init(void) |
| 1010 |
{
|
| 1011 |
PCIBridge *s = &pci_bridge; |
| 1012 |
PCIDevice **bus; |
| 1013 |
int bus_num, devfn, i, irq;
|
| 1014 |
uint8_t elcr[2];
|
| 1015 |
|
| 1016 |
pci_bios_io_addr = 0xc000;
|
| 1017 |
pci_bios_mem_addr = 0xf0000000;
|
| 1018 |
|
| 1019 |
/* activate IRQ mappings */
|
| 1020 |
elcr[0] = 0x00; |
| 1021 |
elcr[1] = 0x00; |
| 1022 |
for(i = 0; i < 4; i++) { |
| 1023 |
irq = pci_irqs[i]; |
| 1024 |
/* set to trigger level */
|
| 1025 |
elcr[irq >> 3] |= (1 << (irq & 7)); |
| 1026 |
/* activate irq remapping in PIIX */
|
| 1027 |
pci_config_writeb((PCIDevice *)piix3_state, 0x60 + i, irq);
|
| 1028 |
} |
| 1029 |
isa_outb(elcr[0], 0x4d0); |
| 1030 |
isa_outb(elcr[1], 0x4d1); |
| 1031 |
|
| 1032 |
for(bus_num = 0; bus_num < 256; bus_num++) { |
| 1033 |
bus = s->pci_bus[bus_num]; |
| 1034 |
if (bus) {
|
| 1035 |
for(devfn = 0; devfn < 256; devfn++) { |
| 1036 |
if (bus[devfn])
|
| 1037 |
pci_bios_init_device(bus[devfn]); |
| 1038 |
} |
| 1039 |
} |
| 1040 |
} |
| 1041 |
} |
| 1042 |
|
| 1043 |
/*
|
| 1044 |
* This function initializes the PCI devices as a normal PCI BIOS
|
| 1045 |
* would do. It is provided just in case the BIOS has no support for
|
| 1046 |
* PCI.
|
| 1047 |
*/
|
| 1048 |
void pci_ppc_bios_init(void) |
| 1049 |
{
|
| 1050 |
PCIBridge *s = &pci_bridge; |
| 1051 |
PCIDevice **bus; |
| 1052 |
int bus_num, devfn, i, irq;
|
| 1053 |
uint8_t elcr[2];
|
| 1054 |
|
| 1055 |
pci_bios_io_addr = 0xc000;
|
| 1056 |
pci_bios_mem_addr = 0xc0000000;
|
| 1057 |
|
| 1058 |
#if 0
|
| 1059 |
/* activate IRQ mappings */
|
| 1060 |
elcr[0] = 0x00;
|
| 1061 |
elcr[1] = 0x00;
|
| 1062 |
for(i = 0; i < 4; i++) {
|
| 1063 |
irq = pci_irqs[i];
|
| 1064 |
/* set to trigger level */
|
| 1065 |
elcr[irq >> 3] |= (1 << (irq & 7));
|
| 1066 |
/* activate irq remapping in PIIX */
|
| 1067 |
pci_config_writeb((PCIDevice *)piix3_state, 0x60 + i, irq);
|
| 1068 |
}
|
| 1069 |
isa_outb(elcr[0], 0x4d0);
|
| 1070 |
isa_outb(elcr[1], 0x4d1);
|
| 1071 |
#endif
|
| 1072 |
|
| 1073 |
for(bus_num = 0; bus_num < 256; bus_num++) { |
| 1074 |
bus = s->pci_bus[bus_num]; |
| 1075 |
if (bus) {
|
| 1076 |
for(devfn = 0; devfn < 256; devfn++) { |
| 1077 |
if (bus[devfn])
|
| 1078 |
pci_bios_init_device(bus[devfn]); |
| 1079 |
} |
| 1080 |
} |
| 1081 |
} |
| 1082 |
} |