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-rw-r--r--drivers/pci.c1
-rw-r--r--drivers/pci_auto.c58
-rw-r--r--drivers/pci_indirect.c16
3 files changed, 65 insertions, 10 deletions
diff --git a/drivers/pci.c b/drivers/pci.c
index 5360030..3c24b99 100644
--- a/drivers/pci.c
+++ b/drivers/pci.c
@@ -459,6 +459,7 @@ int pci_hose_scan_bus(struct pci_controller *hose, int bus)
PCI_BUS(dev), PCI_DEV(dev), PCI_FUNC(dev));
if (cfg) {
cfg->config_device(hose, dev, cfg);
+ sub_bus = max(sub_bus, hose->current_busno);
#ifdef CONFIG_PCI_PNP
} else {
int n = pciauto_config_device(hose, dev);
diff --git a/drivers/pci_auto.c b/drivers/pci_auto.c
index 3302457..15f7432 100644
--- a/drivers/pci_auto.c
+++ b/drivers/pci_auto.c
@@ -77,6 +77,7 @@ int pciauto_region_allocate(struct pci_region* res, unsigned int size, unsigned
void pciauto_setup_device(struct pci_controller *hose,
pci_dev_t dev, int bars_num,
struct pci_region *mem,
+ struct pci_region *prefetch,
struct pci_region *io)
{
unsigned int bar_value, bar_response, bar_size;
@@ -111,7 +112,10 @@ void pciauto_setup_device(struct pci_controller *hose,
found_mem64 = 1;
bar_size = ~(bar_response & PCI_BASE_ADDRESS_MEM_MASK) + 1;
- bar_res = mem;
+ if (prefetch && (bar_response & PCI_BASE_ADDRESS_MEM_PREFETCH))
+ bar_res = prefetch;
+ else
+ bar_res = mem;
DEBUGF("PCI Autoconfig: BAR %d, Mem, size=0x%x, ", bar_nr, bar_size);
}
@@ -148,6 +152,7 @@ static void pciauto_prescan_setup_bridge(struct pci_controller *hose,
pci_dev_t dev, int sub_bus)
{
struct pci_region *pci_mem = hose->pci_mem;
+ struct pci_region *pci_prefetch = hose->pci_prefetch;
struct pci_region *pci_io = hose->pci_io;
unsigned int cmdstat;
@@ -169,6 +174,21 @@ static void pciauto_prescan_setup_bridge(struct pci_controller *hose,
cmdstat |= PCI_COMMAND_MEMORY;
}
+ if (pci_prefetch) {
+ /* Round memory allocator to 1MB boundary */
+ pciauto_region_align(pci_prefetch, 0x100000);
+
+ /* Set up memory and I/O filter limits, assume 32-bit I/O space */
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE,
+ (pci_prefetch->bus_lower & 0xfff00000) >> 16);
+
+ cmdstat |= PCI_COMMAND_MEMORY;
+ } else {
+ /* We don't support prefetchable memory for now, so disable */
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, 0x1000);
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x1000);
+ }
+
if (pci_io) {
/* Round I/O allocator to 4KB boundary */
pciauto_region_align(pci_io, 0x1000);
@@ -181,10 +201,6 @@ static void pciauto_prescan_setup_bridge(struct pci_controller *hose,
cmdstat |= PCI_COMMAND_IO;
}
- /* We don't support prefetchable memory for now, so disable */
- pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, 0x1000);
- pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x1000);
-
/* Enable memory and I/O accesses, enable bus master */
pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat | PCI_COMMAND_MASTER);
}
@@ -193,6 +209,7 @@ static void pciauto_postscan_setup_bridge(struct pci_controller *hose,
pci_dev_t dev, int sub_bus)
{
struct pci_region *pci_mem = hose->pci_mem;
+ struct pci_region *pci_prefetch = hose->pci_prefetch;
struct pci_region *pci_io = hose->pci_io;
/* Configure bus number registers */
@@ -206,6 +223,14 @@ static void pciauto_postscan_setup_bridge(struct pci_controller *hose,
(pci_mem->bus_lower-1) >> 16);
}
+ if (pci_prefetch) {
+ /* Round memory allocator to 1MB boundary */
+ pciauto_region_align(pci_prefetch, 0x100000);
+
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT,
+ (pci_prefetch->bus_lower-1) >> 16);
+ }
+
if (pci_io) {
/* Round I/O allocator to 4KB boundary */
pciauto_region_align(pci_io, 0x1000);
@@ -239,6 +264,11 @@ void pciauto_config_init(struct pci_controller *hose)
hose->pci_mem->size < hose->regions[i].size)
hose->pci_mem = hose->regions + i;
break;
+ case (PCI_REGION_MEM | PCI_REGION_PREFETCH):
+ if (!hose->pci_prefetch ||
+ hose->pci_prefetch->size < hose->regions[i].size)
+ hose->pci_prefetch = hose->regions + i;
+ break;
}
}
@@ -251,6 +281,14 @@ void pciauto_config_init(struct pci_controller *hose)
hose->pci_mem->bus_start + hose->pci_mem->size - 1);
}
+ if (hose->pci_prefetch) {
+ pciauto_region_init(hose->pci_prefetch);
+
+ DEBUGF("PCI Autoconfig: Prefetchable Memory region: [%lx-%lx]\n",
+ hose->pci_prefetch->bus_start,
+ hose->pci_prefetch->bus_start + hose->pci_prefetch->size - 1);
+ }
+
if (hose->pci_io) {
pciauto_region_init(hose->pci_io);
@@ -275,7 +313,7 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
switch(class) {
case PCI_CLASS_BRIDGE_PCI:
hose->current_busno++;
- pciauto_setup_device(hose, dev, 2, hose->pci_mem, hose->pci_io);
+ pciauto_setup_device(hose, dev, 2, hose->pci_mem, hose->pci_prefetch, hose->pci_io);
DEBUGF("PCI Autoconfig: Found P2P bridge, device %d\n", PCI_DEV(dev));
@@ -301,12 +339,12 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
return sub_bus;
}
- pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_io);
+ pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io);
break;
case PCI_CLASS_BRIDGE_CARDBUS:
/* just do a minimal setup of the bridge, let the OS take care of the rest */
- pciauto_setup_device(hose, dev, 0, hose->pci_mem, hose->pci_io);
+ pciauto_setup_device(hose, dev, 0, hose->pci_mem, hose->pci_prefetch, hose->pci_io);
DEBUGF("PCI Autoconfig: Found P2CardBus bridge, device %d\n", PCI_DEV(dev));
@@ -328,11 +366,11 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
* the PIMMR window to be allocated (BAR0 - 1MB size)
*/
DEBUGF("PCI Autoconfig: Broken bridge found, only minimal config\n");
- pciauto_setup_device(hose, dev, 0, hose->pci_mem, hose->pci_io);
+ pciauto_setup_device(hose, dev, 0, hose->pci_mem, hose->pci_prefetch, hose->pci_io);
break;
#endif
default:
- pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_io);
+ pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io);
break;
}
diff --git a/drivers/pci_indirect.c b/drivers/pci_indirect.c
index e8f19f5..f0c4a1c 100644
--- a/drivers/pci_indirect.c
+++ b/drivers/pci_indirect.c
@@ -36,6 +36,10 @@ static int \
indirect_##rw##_config_##size(struct pci_controller *hose, \
pci_dev_t dev, int offset, type val) \
{ \
+ u32 b, d,f; \
+ b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
+ b = b - hose->first_busno; \
+ dev = PCI_BDF(b, d, f); \
out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \
sync(); \
cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
@@ -47,6 +51,10 @@ static int \
indirect_##rw##_config_##size(struct pci_controller *hose, \
pci_dev_t dev, int offset, type val) \
{ \
+ u32 b, d,f; \
+ b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
+ b = b - hose->first_busno; \
+ dev = PCI_BDF(b, d, f); \
*(hose->cfg_addr) = dev | (offset & 0xfc) | 0x80000000; \
sync(); \
cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
@@ -58,6 +66,10 @@ static int \
indirect_##rw##_config_##size(struct pci_controller *hose, \
pci_dev_t dev, int offset, type val) \
{ \
+ u32 b, d,f; \
+ b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
+ b = b - hose->first_busno; \
+ dev = PCI_BDF(b, d, f); \
if (PCI_BUS(dev) > 0) \
out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000001); \
else \
@@ -71,6 +83,10 @@ static int \
indirect_##rw##_config_##size(struct pci_controller *hose, \
pci_dev_t dev, int offset, type val) \
{ \
+ u32 b, d,f; \
+ b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
+ b = b - hose->first_busno; \
+ dev = PCI_BDF(b, d, f); \
out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \
cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
return 0; \
generated by cgit v1.1 at 2024-12-12 17:48:20 +0000