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Diffstat (limited to 'src/device/oprom/yabel/io.c')
-rw-r--r--src/device/oprom/yabel/io.c191
1 files changed, 99 insertions, 92 deletions
diff --git a/src/device/oprom/yabel/io.c b/src/device/oprom/yabel/io.c
index 7117a6eed4..2b384ea7b4 100644
--- a/src/device/oprom/yabel/io.c
+++ b/src/device/oprom/yabel/io.c
@@ -410,66 +410,69 @@ my_outl(X86EMU_pioAddr addr, u32 val)
u32
pci_cfg_read(X86EMU_pioAddr addr, u8 size)
{
+ u32 port_cf8_val = 0;
u32 rval = 0xFFFFFFFF;
- struct device * dev;
- if ((addr >= 0xCFC) && ((addr + size) <= 0xD00)) {
- // PCI Configuration Mechanism 1 step 1
- // write to 0xCF8, sets bus, device, function and Config Space offset
- // later read from 0xCFC-0xCFF returns the value...
- u8 bus, devfn, offs;
- u32 port_cf8_val = my_inl(0xCF8);
- if ((port_cf8_val & 0x80000000) != 0) {
- //highest bit enables config space mapping
- bus = (port_cf8_val & 0x00FF0000) >> 16;
- devfn = (port_cf8_val & 0x0000FF00) >> 8;
- offs = (port_cf8_val & 0x000000FF);
- offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly
- DEBUG_PRINTF_INTR("%s(): PCI Config Read from device: bus: %02x, devfn: %02x, offset: %02x\n",
- __func__, bus, devfn, offs);
+ struct device *dev = NULL;
+ u8 bus, devfn, offs;
+
+ // PCI Configuration Mechanism 1 step 1
+ // write to 0xCF8, sets bus, device, function and Config Space offset
+ // later read from 0xCFC-0xCFF returns the value...
+ if ((addr >= 0xCFC) && ((addr + size) <= 0xD00))
+ port_cf8_val = my_inl(0xCF8);
+
+ if ((port_cf8_val & 0x80000000) == 0)
+ return rval;
+
+ //highest bit enables config space mapping
+ bus = (port_cf8_val & 0x00FF0000) >> 16;
+ devfn = (port_cf8_val & 0x0000FF00) >> 8;
+ offs = (port_cf8_val & 0x000000FF);
+ offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly
+ DEBUG_PRINTF_INTR("%s(): PCI Config Read from device: bus: %02x, devfn: %02x, offset: %02x\n",
+ __func__, bus, devfn, offs);
#if CONFIG(YABEL_PCI_ACCESS_OTHER_DEVICES)
- dev = dev_find_slot(bus, devfn);
- DEBUG_PRINTF_INTR("%s(): dev_find_slot() returned: %s\n",
- __func__, dev_path(dev));
- if (dev == 0) {
- // fail accesses to non-existent devices...
+ dev = dev_find_slot(bus, devfn);
+ DEBUG_PRINTF_INTR("%s(): dev_find_slot() returned: %s\n",
+ __func__, dev_path(dev));
+ if (dev == 0) {
+ // fail accesses to non-existent devices...
#else
- dev = bios_device.dev;
- if ((bus != bios_device.bus)
- || (devfn != bios_device.devfn)) {
- // fail accesses to any device but ours...
+ dev = bios_device.dev;
+ if ((bus != bios_device.bus)
+ || (devfn != bios_device.devfn)) {
+ // fail accesses to any device but ours...
#endif
- printf
- ("%s(): Config read access invalid device! bus: %02x (%02x), devfn: %02x (%02x), offs: %02x\n",
- __func__, bus, bios_device.bus, devfn,
- bios_device.devfn, offs);
- SET_FLAG(F_CF);
- HALT_SYS();
- return 0;
- } else {
+ printf
+ ("%s(): Config read access invalid device! bus: %02x (%02x), devfn: %02x (%02x), offs: %02x\n",
+ __func__, bus, bios_device.bus, devfn,
+ bios_device.devfn, offs);
+ SET_FLAG(F_CF);
+ HALT_SYS();
+ return 0;
+ } else {
#if CONFIG(PCI_OPTION_ROM_RUN_YABEL)
- switch (size) {
- case 1:
- rval = pci_read_config8(dev, offs);
- break;
- case 2:
- rval = pci_read_config16(dev, offs);
- break;
- case 4:
- rval = pci_read_config32(dev, offs);
- break;
- }
+ switch (size) {
+ case 1:
+ rval = pci_read_config8(dev, offs);
+ break;
+ case 2:
+ rval = pci_read_config16(dev, offs);
+ break;
+ case 4:
+ rval = pci_read_config32(dev, offs);
+ break;
+ }
#else
- rval =
- (u32) rtas_pci_config_read(bios_device.
- puid, size,
- bus, devfn,
- offs);
+ rval =
+ (u32) rtas_pci_config_read(bios_device.
+ puid, size,
+ bus, devfn,
+ offs);
#endif
- DEBUG_PRINTF_IO
- ("%s(%04x) PCI Config Read @%02x, size: %d --> 0x%08x\n",
- __func__, addr, offs, size, rval);
- }
- }
+ DEBUG_PRINTF_IO
+ ("%s(%04x) PCI Config Read @%02x, size: %d --> 0x%08x\n",
+ __func__, addr, offs, size, rval);
}
return rval;
}
@@ -477,50 +480,54 @@ pci_cfg_read(X86EMU_pioAddr addr, u8 size)
void
pci_cfg_write(X86EMU_pioAddr addr, u32 val, u8 size)
{
- if ((addr >= 0xCFC) && ((addr + size) <= 0xD00)) {
- // PCI Configuration Mechanism 1 step 1
- // write to 0xCF8, sets bus, device, function and Config Space offset
- // later write to 0xCFC-0xCFF sets the value...
- u8 bus, devfn, offs;
- u32 port_cf8_val = my_inl(0xCF8);
- if ((port_cf8_val & 0x80000000) != 0) {
- //highest bit enables config space mapping
- bus = (port_cf8_val & 0x00FF0000) >> 16;
- devfn = (port_cf8_val & 0x0000FF00) >> 8;
- offs = (port_cf8_val & 0x000000FF);
- offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly
- if ((bus != bios_device.bus)
- || (devfn != bios_device.devfn)) {
- // fail accesses to any device but ours...
- printf
- ("Config write access invalid! PCI device %x:%x.%x, offs: %x\n",
- bus, devfn >> 3, devfn & 7, offs);
+ u32 port_cf8_val = 0;
+ u8 bus, devfn, offs;
+
+ // PCI Configuration Mechanism 1 step 1
+ // write to 0xCF8, sets bus, device, function and Config Space offset
+ // later write to 0xCFC-0xCFF sets the value...
+
+ if ((addr >= 0xCFC) && ((addr + size) <= 0xD00))
+ port_cf8_val = my_inl(0xCF8);
+
+ if ((port_cf8_val & 0x80000000) == 0)
+ return;
+
+ //highest bit enables config space mapping
+ bus = (port_cf8_val & 0x00FF0000) >> 16;
+ devfn = (port_cf8_val & 0x0000FF00) >> 8;
+ offs = (port_cf8_val & 0x000000FF);
+ offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly
+ if ((bus != bios_device.bus)
+ || (devfn != bios_device.devfn)) {
+ // fail accesses to any device but ours...
+ printf
+ ("Config write access invalid! PCI device %x:%x.%x, offs: %x\n",
+ bus, devfn >> 3, devfn & 7, offs);
#if !CONFIG(YABEL_PCI_FAKE_WRITING_OTHER_DEVICES_CONFIG)
- HALT_SYS();
+ HALT_SYS();
#endif
- } else {
+ } else {
#if CONFIG(PCI_OPTION_ROM_RUN_YABEL)
- switch (size) {
- case 1:
- pci_write_config8(bios_device.dev, offs, val);
- break;
- case 2:
- pci_write_config16(bios_device.dev, offs, val);
- break;
- case 4:
- pci_write_config32(bios_device.dev, offs, val);
- break;
- }
+ switch (size) {
+ case 1:
+ pci_write_config8(bios_device.dev, offs, val);
+ break;
+ case 2:
+ pci_write_config16(bios_device.dev, offs, val);
+ break;
+ case 4:
+ pci_write_config32(bios_device.dev, offs, val);
+ break;
+ }
#else
- rtas_pci_config_write(bios_device.puid,
- size, bus, devfn, offs,
- val);
+ rtas_pci_config_write(bios_device.puid,
+ size, bus, devfn, offs,
+ val);
#endif
- DEBUG_PRINTF_IO
- ("%s(%04x) PCI Config Write @%02x, size: %d <-- 0x%08x\n",
- __func__, addr, offs, size, val);
- }
- }
+ DEBUG_PRINTF_IO
+ ("%s(%04x) PCI Config Write @%02x, size: %d <-- 0x%08x\n",
+ __func__, addr, offs, size, val);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 00:13:43 +0000