-#ifdef PCI_DEBUG
-static void pci_dump_state(struct pci_internal * pci_state);
+
+
+#ifdef DEBUG_PCI
+
+static void pci_dump_state(struct pci_internal * pci_state) {
+ struct rb_node * node = v3_rb_first(&(pci_state->bus_list[0].devices));
+ struct pci_device * tmp_dev = NULL;
+
+ PrintDebug("===PCI: Dumping state Begin ==========\n");
+
+ do {
+ tmp_dev = rb_entry(node, struct pci_device, dev_tree_node);
+
+ PrintDebug("PCI Device Number: %d (%s):\n", tmp_dev->dev_num, tmp_dev->name);
+ PrintDebug("irq = %d\n", tmp_dev->config_header.intr_line);
+ PrintDebug("Vend ID: 0x%x\n", tmp_dev->config_header.vendor_id);
+ PrintDebug("Device ID: 0x%x\n", tmp_dev->config_header.device_id);
+
+ } while ((node = v3_rb_next(node)));
+
+ PrintDebug("====PCI: Dumping state End==========\n");
+}
+
#endif
+
+
+
// Scan the dev_map bitmap for the first '0' bit
static int get_free_dev_num(struct pci_bus * bus) {
int i, j;
// availability
for (j = 0; j < 8; j++) {
if (!(bus->dev_map[i] & (0x1 << j))) {
- return i * 8 + j;
+ return ((i * 8) + j);
}
}
}
}
static void allocate_dev_num(struct pci_bus * bus, int dev_num) {
- int major = dev_num / 8;
+ int major = (dev_num / 8);
int minor = dev_num % 8;
bus->dev_map[major] |= (0x1 << minor);
-static int read_pci_header(struct pci_device * pci_dev, int reg_num, void * dst, int length) {
- if (length == 4) {
- *(uint32_t *)dst = *(uint32_t *)(pci_dev->header_space + reg_num);
- } else if (length == 2) {
- *(uint16_t *)dst = *(uint16_t *)(pci_dev->header_space + reg_num);
- } else if (length == 1) {
- *(uint8_t *)dst = pci_dev->header_space[reg_num];
- } else {
- PrintError("Invalid Read length (%d) for PCI configration header\n", length);
- return -1;
- }
- return length;
-}
-
-
-static int write_pci_header(struct pci_device * pci_dev, int reg_num, void * src, int length) {
-
- if (length == 4) {
- *(uint32_t *)(pci_dev->header_space + reg_num) = *(uint32_t *)src;
- } else if (length == 2) {
- *(uint16_t *)(pci_dev->header_space + reg_num) = *(uint16_t *)src;
- } else if (length == 1) {
- pci_dev->header_space[reg_num] = *(uint8_t *)src;
- } else {
- PrintError("Invalid Read length (%d) for PCI configration header\n", length);
- return -1;
- }
-
- // This is kind of ugly...
- if ((reg_num >= 0x10) && (reg_num < 0x27)) {
- int bar_num = (reg_num & ~0x3) - 0x10;
- uint32_t val = *(uint32_t *)(pci_dev->header_space + (reg_num & ~0x3));
-
- pci_dev->bar_update(pci_dev, bar_num, val);
- }
-
- return length;
-}
static int addr_port_read(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
int reg_offset = port & 0x3;
uint8_t * reg_addr = ((uint8_t *)&(pci_state->addr_reg.val)) + reg_offset;
- PrintDebug("Reading PCI Address Port (%x): %x\n", port, pci_state->addr_reg.val);
+ PrintDebug("Reading PCI Address Port (%x): %x len=%d\n", port, pci_state->addr_reg.val, length);
if (length == 4) {
if (reg_offset != 0) {
int reg_offset = port & 0x3;
uint8_t * reg_addr = ((uint8_t *)&(pci_state->addr_reg.val)) + reg_offset;
+
if (length == 4) {
if (reg_offset != 0) {
PrintError("Invalid Address Port Write\n");
return -1;
}
+ PrintDebug("Writing PCI 4 bytes Val=%x\n", *(uint32_t *)src);
+
*(uint32_t *)reg_addr = *(uint32_t *)src;
} else if (length == 2) {
if (reg_offset > 2) {
return -1;
}
+ PrintDebug("Writing PCI 2 byte Val=%x\n", *(uint16_t *)src);
+
*(uint16_t *)reg_addr = *(uint16_t *)src;
} else if (length == 1) {
+ PrintDebug("Writing PCI 1 byte Val=%x\n", *(uint8_t *)src);
*(uint8_t *)reg_addr = *(uint8_t *)src;
} else {
PrintError("Invalid write length (%d) for PCI address register\n", length);
return -1;
}
- PrintDebug("Writing PCI Address Port(%x): %x\n", port, pci_state->addr_reg.val);
-
+ PrintDebug("Writing PCI Address Port(%x): %x\n", port, pci_state->addr_reg.val);
return length;
}
static int data_port_read(ushort_t port, void * dst, uint_t length, struct vm_device * vmdev) {
- struct pci_internal * pci_state = (struct pci_internal *)vmdev->private_data;;
+ struct pci_internal * pci_state = (struct pci_internal *)(vmdev->private_data);
struct pci_device * pci_dev = NULL;
- uint_t reg_num = pci_state->addr_reg.reg_num;
+ uint_t reg_num = pci_state->addr_reg.reg_num + (port & 0x3);
+ int i;
-
- PrintDebug("Reading PCI Data register. bus = %d, dev = %d, reg = %d (%x)\n",
- pci_state->addr_reg.bus_num,
- pci_state->addr_reg.dev_num,
- reg_num);
+ if (pci_state->addr_reg.bus_num != 0) {
+ int i = 0;
+ for (i = 0; i < length; i++) {
+ *(uint8_t *)dst = 0xff;
+ }
-
- if (port != CONFIG_DATA_PORT) {
- PrintError("Weird Data port Read: %x\n", port);
- return -1;
+ return length;
}
+ PrintDebug("Reading PCI Data register. bus = %d, dev = %d, reg = %d (%x), cfg_reg = %x\n",
+ pci_state->addr_reg.bus_num,
+ pci_state->addr_reg.dev_num,
+ reg_num, reg_num,
+ pci_state->addr_reg.val);
+
pci_dev = get_device(&(pci_state->bus_list[0]), pci_state->addr_reg.dev_num);
if (pci_dev == NULL) {
- //*(uint32_t *)dst = 0xffffffff;
-
- PrintError("Reading configuration space for non-present device (dev_num=%d)\n",
- pci_state->addr_reg.dev_num);
+ for (i = 0; i < length; i++) {
+ *(uint8_t *)((uint8_t *)dst + i) = 0xff;
+ }
- return -1;
+ return length;
}
- // Header register
- if (reg_num < 0x40) {
- return read_pci_header(pci_dev, reg_num, dst, length);
+ for (i = 0; i < length; i++) {
+ *(uint8_t *)((uint8_t *)dst + i) = pci_dev->config_space[reg_num + i];
}
- if (pci_dev->config_read) {
- return pci_dev->config_read(pci_dev, reg_num, dst, length);
- }
+ PrintDebug("\tVal=%x, len=%d\n", *(uint32_t *)dst, length);
+ return length;
+}
- if (length == 4) {
- *(uint32_t *)dst = *(uint32_t *)(pci_dev->config_space + reg_num - 0x40);
- } else if (length == 2) {
- *(uint16_t *)dst = *(uint16_t *)(pci_dev->config_space + reg_num - 0x40);
- } else if (length == 1) {
- *(uint8_t *)dst = pci_dev->config_space[reg_num - 0x40];
+
+static inline int is_cfg_reg_writable(uchar_t header_type, int reg_num) {
+ if (header_type == 0x00) {
+ switch (reg_num) {
+ case 0x00:
+ case 0x01:
+ case 0x02:
+ case 0x03:
+ case 0x08:
+ case 0x09:
+ case 0x0a:
+ case 0x0b:
+ case 0x0e:
+ case 0x3d:
+ return 0;
+
+ default:
+ return 1;
+
+ }
} else {
- PrintError("Invalid Read length (%d) for PCI data register", length);
+ // PCI to PCI Bridge = 0x01
+ // CardBus Bridge = 0x02
+
+ // huh?
+ PrintError("Invalid PCI Header type (0x%.2x)\n", header_type);
+
return -1;
}
-
- return length;
+}
+
+
+static int bar_update(struct pci_device * pci, int bar_num) {
+ PrintError("Bar Updates not handled (bar=%d)\n", bar_num);
+ return -1;
}
static int data_port_write(ushort_t port, void * src, uint_t length, struct vm_device * vmdev) {
- struct pci_internal * pci_state = (struct pci_internal *)vmdev->private_data;;
+ struct pci_internal * pci_state = (struct pci_internal *)vmdev->private_data;
struct pci_device * pci_dev = NULL;
- uint_t reg_num = pci_state->addr_reg.reg_num;
-
-
- PrintDebug("Writing PCI Data register. bus = %d, dev = %d, reg = %d (%x)\n",
- pci_state->addr_reg.bus_num,
- pci_state->addr_reg.dev_num,
- reg_num);
+ uint_t reg_num = pci_state->addr_reg.reg_num + (port & 0x3);
+ int i;
- if (port != CONFIG_DATA_PORT) {
- PrintError("Weird Data port Write: %x\n", port);
- return -1;
+
+ if (pci_state->addr_reg.bus_num != 0) {
+ return length;
}
+ PrintDebug("Writing PCI Data register. bus = %d, dev = %d, reg = %d (%x) addr_reg = %x (val=%x, len=%d)\n",
+ pci_state->addr_reg.bus_num,
+ pci_state->addr_reg.dev_num,
+ reg_num, reg_num,
+ pci_state->addr_reg.val,
+ *(uint32_t *)src, length);
+
pci_dev = get_device(&(pci_state->bus_list[0]), pci_state->addr_reg.dev_num);
return -1;
}
- // Header register
- if (reg_num < 0x40) {
- return write_pci_header(pci_dev, reg_num, src, length);
+
+ for (i = 0; i < length; i++) {
+ uint_t cur_reg = reg_num + i;
+
+ if (is_cfg_reg_writable(pci_dev->config_header.header_type, cur_reg)) {
+ pci_dev->config_space[cur_reg] = *(uint8_t *)((uint8_t *)src + i);
+
+ if ((cur_reg >= 0x10) && (cur_reg < 0x28)) {
+ // BAR Reg
+ int bar_reg = (cur_reg & ~0x3) - 0x10;
+
+ pci_dev->bar_update_flag = 1;
+ pci_dev->bar[bar_reg].updated = 1;
+
+ PrintDebug("Updating BAR register\n");
+
+ } else if ((cur_reg >= 0x30) && (cur_reg < 0x34)) {
+ pci_dev->ext_rom_update_flag = 1;
+ } else if (cur_reg == 0x04) {
+ // COMMAND update
+ uint8_t command = *((uint8_t *)src + i);
+
+ pci_dev->config_space[cur_reg] = command;
+
+ if (pci_dev->cmd_update) {
+ pci_dev->cmd_update(pci_dev, (command & 0x01), (command & 0x02));
+ }
+
+ } else if (cur_reg == 0x0f) {
+ // BIST update
+ pci_dev->config_header.BIST = 0x00;
+ }
+ }
}
-
- if (pci_dev->config_write) {
- return pci_dev->config_write(pci_dev, reg_num, src, length);
+ if (pci_dev->config_update) {
+ pci_dev->config_update(pci_dev, reg_num, length);
}
+ // Scan for BAR updated
+ if (pci_dev->bar_update_flag) {
+ for (i = 0; i < 6; i++) {
+ if (pci_dev->bar[i].updated) {
+ int bar_offset = 0x10 + 4 * i;
- if (length == 4) {
- *(uint32_t *)(pci_dev->config_space + reg_num - 0x40) = *(uint32_t *)src;
- } else if (length == 2) {
- *(uint16_t *)(pci_dev->config_space + reg_num - 0x40) = *(uint16_t *)src;
- } else if (length == 1) {
- pci_dev->config_space[reg_num - 0x40] = *(uint8_t *)src;
- } else {
- PrintError("Invalid Write length (%d) for PCI data register", length);
- return -1;
+ *(uint32_t *)(pci_dev->config_space + bar_offset) &= pci_dev->bar[i].mask;
+
+ // bar_update
+ if (bar_update(pci_dev, i) == -1) {
+ PrintError("PCI Device %s: Bar update Error Bar=%d\n", pci_dev->name, i);
+ return -1;
+ }
+
+ pci_dev->bar[i].updated = 0;
+ }
+ }
+ pci_dev->bar_update_flag = 0;
}
-
+
+ if ((pci_dev->ext_rom_update_flag) && (pci_dev->ext_rom_update)) {
+ pci_dev->ext_rom_update(pci_dev);
+ pci_dev->ext_rom_update_flag = 0;
+ }
+
+
return length;
}
static int init_i440fx(struct vm_device * dev) {
- struct pci_device * pci_dev = v3_pci_register_device(dev, 0, "i440FX", 0,
- NULL, NULL, NULL, NULL);
+ struct pci_device * pci_dev = NULL;
+ struct v3_pci_bar bars[6];
+ int i;
+
+ for (i = 0; i < 6; i++) {
+ bars[i].type = PCI_BAR_NONE;
+ }
+
+ pci_dev = v3_pci_register_device(dev, PCI_STD_DEVICE, 0, "i440FX", 0, bars,
+ NULL, NULL, NULL, NULL);
if (!pci_dev) {
- return -1;
+ return -1;
}
- pci_dev->header.vendor_id = 0x8086;
- pci_dev->header.device_id = 0x1237;
- pci_dev->header.revision = 0x0002;
- pci_dev->header.subclass = 0x00; // SubClass: host2pci
- pci_dev->header.class = 0x06; // Class: PCI bridge
- pci_dev->header.header_type = 0x00;
+ pci_dev->config_header.vendor_id = 0x8086;
+ pci_dev->config_header.device_id = 0x1237;
+ pci_dev->config_header.revision = 0x0002;
+ pci_dev->config_header.subclass = 0x00; // SubClass: host2pci
+ pci_dev->config_header.class = 0x06; // Class: PCI bridge
pci_dev->bus_num = 0;
-
return 0;
}
+
static void init_pci_busses(struct pci_internal * pci_state) {
int i;
return -1;
}
+ PrintDebug("Sizeof config header=%d\n", (int)sizeof(struct pci_config_header));
+
for (i = 0; i < 4; i++) {
v3_dev_hook_io(dev, CONFIG_ADDR_PORT + i, &addr_port_read, &addr_port_write);
v3_dev_hook_io(dev, CONFIG_DATA_PORT + i, &data_port_read, &data_port_write);
+static inline int init_bars(struct pci_device * pci_dev) {
+ int i = 0;
+
+ for (i = 0; i < 6; i++) {
+ int bar_offset = 0x10 + (4 * i);
+
+ if (pci_dev->bar[i].type == PCI_BAR_IO) {
+ int j = 0;
+ pci_dev->bar[i].mask = (~((pci_dev->bar[i].num_ports) - 1)) | 0x01;
+
+ *(uint32_t *)(pci_dev->config_space + bar_offset) = pci_dev->bar[i].default_base_port & pci_dev->bar[i].mask;
+ *(uint32_t *)(pci_dev->config_space + bar_offset) |= 0x00000001;
+
+ for (j = 0; j < pci_dev->bar[i].num_ports; j++) {
+ // hook IO
+ if (v3_dev_hook_io(pci_dev->vm_dev, pci_dev->bar[i].default_base_port + j,
+ pci_dev->bar[i].io_read, pci_dev->bar[i].io_write) == -1) {
+ PrintError("Could not hook default io port %x\n", pci_dev->bar[i].default_base_port + j);
+ return -1;
+ }
+ }
+
+ } else if (pci_dev->bar[i].type == PCI_BAR_MEM32) {
+ pci_dev->bar[i].mask = ~((pci_dev->bar[i].num_pages << 12) - 1);
+ pci_dev->bar[i].mask |= 0xf; // preserve the configuration flags
+
+ *(uint32_t *)(pci_dev->config_space + bar_offset) = pci_dev->bar[i].default_base_addr & pci_dev->bar[i].mask;
+
+ // hook memory
+ if (pci_dev->bar[i].mem_read) {
+ // full hook
+ v3_hook_full_mem(pci_dev->vm_dev->vm, pci_dev->bar[i].default_base_addr,
+ pci_dev->bar[i].default_base_addr + (pci_dev->bar[i].num_pages * PAGE_SIZE_4KB),
+ pci_dev->bar[i].mem_read, pci_dev->bar[i].mem_write, pci_dev->vm_dev);
+ } else if (pci_dev->bar[i].mem_write) {
+ // write hook
+ PrintError("Write hooks not supported for PCI devices\n");
+ return -1;
+ /*
+ v3_hook_write_mem(pci_dev->vm_dev->vm, pci_dev->bar[i].default_base_addr,
+ pci_dev->bar[i].default_base_addr + (pci_dev->bar[i].num_pages * PAGE_SIZE_4KB),
+ pci_dev->bar[i].mem_write, pci_dev->vm_dev);
+ */
+ } else {
+ // set the prefetchable flag...
+ *(uint8_t *)(pci_dev->config_space + bar_offset) |= 0x00000008;
+ }
+
+ } else if (pci_dev->bar[i].type == PCI_BAR_MEM16) {
+ PrintError("16 Bit memory ranges not supported (reg: %d)\n", i);
+ return -1;
+ } else if (pci_dev->bar[i].type == PCI_BAR_NONE) {
+ *(uint32_t *)(pci_dev->config_space + bar_offset) = 0x00000000;
+ } else {
+ PrintError("Invalid BAR type for bar #%d\n", i);
+ return -1;
+ }
+ }
+
+ return 0;
+}
// if dev_num == -1, auto assign
struct pci_device * v3_pci_register_device(struct vm_device * pci,
+ pci_device_type_t dev_type,
uint_t bus_num,
const char * name,
int dev_num,
- int (*config_read)(struct pci_device * pci_dev, uint_t reg_num, void * dst, int len),
- int (*config_write)(struct pci_device * pci_dev, uint_t reg_num, void * src, int len),
- int (*bar_update)(struct pci_device * pci_dev, uint_t bar_reg, uint32_t val),
+ struct v3_pci_bar * bars,
+ int (*config_update)(struct pci_device * pci_dev, uint_t reg_num, int length),
+ int (*cmd_update)(struct pci_device *pci_dev, uchar_t io_enabled, uchar_t mem_enabled),
+ int (*ext_rom_update)(struct pci_device * pci_dev),
void * private_data) {
struct pci_internal * pci_state = (struct pci_internal *)pci->private_data;
struct pci_bus * bus = &(pci_state->bus_list[bus_num]);
struct pci_device * pci_dev = NULL;
+ int i;
if (dev_num > MAX_BUS_DEVICES) {
PrintError("Requested Invalid device number (%d)\n", dev_num);
}
memset(pci_dev, 0, sizeof(struct pci_device));
-
+
+ switch (dev_type) {
+ case PCI_STD_DEVICE:
+ pci_dev->config_header.header_type = 0x00;
+ break;
+ default:
+ PrintError("Unhandled PCI Device Type: %d\n", dev_type);
+ return NULL;
+ }
+
pci_dev->bus_num = bus_num;
pci_dev->dev_num = dev_num;
strncpy(pci_dev->name, name, sizeof(pci_dev->name));
pci_dev->vm_dev = pci;
- pci_dev->config_read = config_read;
- pci_dev->config_write = config_write;
- pci_dev->bar_update = bar_update;
+ // register update callbacks
+ pci_dev->config_update = config_update;
+ pci_dev->cmd_update = cmd_update;
+ pci_dev->ext_rom_update = ext_rom_update;
pci_dev->priv_data = private_data;
+
+ //copy bars
+ for (i = 0; i < 6; i ++){
+ pci_dev->bar[i].type = bars[i].type;
+
+ if (pci_dev->bar[i].type == PCI_BAR_IO) {
+ pci_dev->bar[i].num_ports = bars[i].num_ports;
+ pci_dev->bar[i].default_base_port = bars[i].default_base_port;
+ pci_dev->bar[i].io_read = bars[i].io_read;
+ pci_dev->bar[i].io_write = bars[i].io_write;
+ } else {
+ pci_dev->bar[i].num_pages = bars[i].num_pages;
+ pci_dev->bar[i].default_base_addr = bars[i].default_base_addr;
+ pci_dev->bar[i].mem_read = bars[i].mem_read;
+ pci_dev->bar[i].mem_write = bars[i].mem_write;
+ }
+ }
+
+ if (init_bars(pci_dev) == -1) {
+ PrintError("could not initialize bar registers\n");
+ return NULL;
+ }
+
// add the device
add_device_to_bus(bus, pci_dev);
-
+
#ifdef DEBUG_PCI
pci_dump_state(pci_state);
#endif
-#ifdef DEBUG_PCI
-
-static void pci_dump_state(struct pci_internal * pci_state) {
- struct rb_node * node = v3_rb_first(&(pci_state->bus_list[0].devices));
- struct pci_device * tmp_dev = NULL;
-
- PrintDebug("===PCI: Dumping state Begin ==========\n");
-
- do {
- tmp_dev = rb_entry(node, struct pci_device, dev_tree_node);
-
- PrintDebug("PCI Device Number: %d (%s):\n", tmp_dev->dev_num, tmp_dev->name);
- PrintDebug("irq = %d\n", tmp_dev->header.irq_line);
- PrintDebug("Vend ID: 0x%x\n", tmp_dev->header.vendor_id);
- PrintDebug("Device ID: 0x%x\n", tnp_dev->header.device_id);
-
- } while ((node = v3_rb_next(node)));
-
- PrintDebug("====PCI: Dumping state End==========\n");
-}
-
-#endif
