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path: root/drivers/pci/pci_auto.c
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Diffstat (limited to 'drivers/pci/pci_auto.c')
-rw-r--r--drivers/pci/pci_auto.c104
1 files changed, 67 insertions, 37 deletions
diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c
index 87ee2c240..cd78030cd 100644
--- a/drivers/pci/pci_auto.c
+++ b/drivers/pci/pci_auto.c
@@ -35,7 +35,7 @@
*
*/
-void pciauto_region_init(struct pci_region* res)
+void pciauto_region_init(struct pci_region *res)
{
/*
* Avoid allocating PCI resources from address 0 -- this is illegal
@@ -50,7 +50,8 @@ void pciauto_region_align(struct pci_region *res, pci_size_t size)
res->bus_lower = ((res->bus_lower - 1) | (size - 1)) + 1;
}
-int pciauto_region_allocate(struct pci_region* res, pci_size_t size, pci_addr_t *bar)
+int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
+ pci_addr_t *bar)
{
pci_addr_t addr;
@@ -88,58 +89,77 @@ void pciauto_setup_device(struct pci_controller *hose,
struct pci_region *prefetch,
struct pci_region *io)
{
- unsigned int bar_response;
- pci_addr_t bar_value;
+ u32 bar_response;
pci_size_t bar_size;
- unsigned int cmdstat = 0;
- struct pci_region *bar_res;
+ u16 cmdstat = 0;
int bar, bar_nr = 0;
+#ifndef CONFIG_PCI_ENUM_ONLY
+ pci_addr_t bar_value;
+ struct pci_region *bar_res;
int found_mem64 = 0;
+#endif
- pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat);
+ pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat);
cmdstat = (cmdstat & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) | PCI_COMMAND_MASTER;
- for (bar = PCI_BASE_ADDRESS_0; bar < PCI_BASE_ADDRESS_0 + (bars_num*4); bar += 4) {
+ for (bar = PCI_BASE_ADDRESS_0;
+ bar < PCI_BASE_ADDRESS_0 + (bars_num * 4); bar += 4) {
/* Tickle the BAR and get the response */
+#ifndef CONFIG_PCI_ENUM_ONLY
pci_hose_write_config_dword(hose, dev, bar, 0xffffffff);
+#endif
pci_hose_read_config_dword(hose, dev, bar, &bar_response);
/* If BAR is not implemented go to the next BAR */
if (!bar_response)
continue;
+#ifndef CONFIG_PCI_ENUM_ONLY
found_mem64 = 0;
+#endif
/* Check the BAR type and set our address mask */
if (bar_response & PCI_BASE_ADDRESS_SPACE) {
bar_size = ((~(bar_response & PCI_BASE_ADDRESS_IO_MASK))
& 0xffff) + 1;
+#ifndef CONFIG_PCI_ENUM_ONLY
bar_res = io;
+#endif
DEBUGF("PCI Autoconfig: BAR %d, I/O, size=0x%llx, ", bar_nr, (u64)bar_size);
} else {
- if ( (bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) ==
+ if ((bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) ==
PCI_BASE_ADDRESS_MEM_TYPE_64) {
u32 bar_response_upper;
u64 bar64;
- pci_hose_write_config_dword(hose, dev, bar+4, 0xffffffff);
- pci_hose_read_config_dword(hose, dev, bar+4, &bar_response_upper);
+
+#ifndef CONFIG_PCI_ENUM_ONLY
+ pci_hose_write_config_dword(hose, dev, bar + 4,
+ 0xffffffff);
+#endif
+ pci_hose_read_config_dword(hose, dev, bar + 4,
+ &bar_response_upper);
bar64 = ((u64)bar_response_upper << 32) | bar_response;
bar_size = ~(bar64 & PCI_BASE_ADDRESS_MEM_MASK) + 1;
+#ifndef CONFIG_PCI_ENUM_ONLY
found_mem64 = 1;
+#endif
} else {
bar_size = (u32)(~(bar_response & PCI_BASE_ADDRESS_MEM_MASK) + 1);
}
+#ifndef CONFIG_PCI_ENUM_ONLY
if (prefetch && (bar_response & PCI_BASE_ADDRESS_MEM_PREFETCH))
bar_res = prefetch;
else
bar_res = mem;
+#endif
DEBUGF("PCI Autoconfig: BAR %d, Mem, size=0x%llx, ", bar_nr, (u64)bar_size);
}
+#ifndef CONFIG_PCI_ENUM_ONLY
if (pciauto_region_allocate(bar_res, bar_size, &bar_value) == 0) {
/* Write it out and update our limit */
pci_hose_write_config_dword(hose, dev, bar, (u32)bar_value);
@@ -158,16 +178,17 @@ void pciauto_setup_device(struct pci_controller *hose,
#endif
}
- cmdstat |= (bar_response & PCI_BASE_ADDRESS_SPACE) ?
- PCI_COMMAND_IO : PCI_COMMAND_MEMORY;
}
+#endif
+ cmdstat |= (bar_response & PCI_BASE_ADDRESS_SPACE) ?
+ PCI_COMMAND_IO : PCI_COMMAND_MEMORY;
DEBUGF("\n");
bar_nr++;
}
- pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat);
+ pci_hose_write_config_word(hose, dev, PCI_COMMAND, cmdstat);
pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE,
CONFIG_SYS_PCI_CACHE_LINE_SIZE);
pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
@@ -179,9 +200,9 @@ void pciauto_prescan_setup_bridge(struct pci_controller *hose,
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;
+ u16 cmdstat;
- pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat);
+ pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat);
/* Configure bus number registers */
pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS,
@@ -229,7 +250,8 @@ void pciauto_prescan_setup_bridge(struct pci_controller *hose,
}
/* Enable memory and I/O accesses, enable bus master */
- pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat | PCI_COMMAND_MASTER);
+ pci_hose_write_config_word(hose, dev, PCI_COMMAND,
+ cmdstat | PCI_COMMAND_MASTER);
}
void pciauto_postscan_setup_bridge(struct pci_controller *hose,
@@ -248,7 +270,7 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose,
pciauto_region_align(pci_mem, 0x100000);
pci_hose_write_config_word(hose, dev, PCI_MEMORY_LIMIT,
- (pci_mem->bus_lower-1) >> 16);
+ (pci_mem->bus_lower - 1) >> 16);
}
if (pci_prefetch) {
@@ -256,7 +278,7 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose,
pciauto_region_align(pci_prefetch, 0x100000);
pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT,
- (pci_prefetch->bus_lower-1) >> 16);
+ (pci_prefetch->bus_lower - 1) >> 16);
}
if (pci_io) {
@@ -264,9 +286,9 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose,
pciauto_region_align(pci_io, 0x1000);
pci_hose_write_config_byte(hose, dev, PCI_IO_LIMIT,
- ((pci_io->bus_lower-1) & 0x0000f000) >> 8);
+ ((pci_io->bus_lower - 1) & 0x0000f000) >> 8);
pci_hose_write_config_word(hose, dev, PCI_IO_LIMIT_UPPER16,
- ((pci_io->bus_lower-1) & 0xffff0000) >> 16);
+ ((pci_io->bus_lower - 1) & 0xffff0000) >> 16);
}
}
@@ -280,7 +302,7 @@ void pciauto_config_init(struct pci_controller *hose)
hose->pci_io = hose->pci_mem = NULL;
- for (i=0; i<hose->region_count; i++) {
+ for (i = 0; i < hose->region_count; i++) {
switch(hose->regions[i].flags) {
case PCI_REGION_IO:
if (!hose->pci_io ||
@@ -338,7 +360,8 @@ void pciauto_config_init(struct pci_controller *hose)
}
}
-/* HJF: Changed this to return int. I think this is required
+/*
+ * HJF: Changed this to return int. I think this is required
* to get the correct result when scanning bridges
*/
int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
@@ -350,16 +373,11 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class);
- switch(class) {
- case PCI_CLASS_PROCESSOR_POWERPC: /* an agent or end-point */
- DEBUGF("PCI AutoConfig: Found PowerPC device\n");
- pciauto_setup_device(hose, dev, 6, hose->pci_mem,
- hose->pci_prefetch, hose->pci_io);
- break;
-
+ switch (class) {
case PCI_CLASS_BRIDGE_PCI:
hose->current_busno++;
- pciauto_setup_device(hose, dev, 2, hose->pci_mem, hose->pci_prefetch, 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));
@@ -385,14 +403,20 @@ 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_prefetch, 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_prefetch, hose->pci_io);
+ /*
+ * 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_prefetch, hose->pci_io);
- DEBUGF("PCI Autoconfig: Found P2CardBus bridge, device %d\n", PCI_DEV(dev));
+ DEBUGF("PCI Autoconfig: Found P2CardBus bridge, device %d\n",
+ PCI_DEV(dev));
hose->current_busno++;
break;
@@ -412,11 +436,17 @@ 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_prefetch, hose->pci_io);
+ pciauto_setup_device(hose, dev, 0, hose->pci_mem,
+ hose->pci_prefetch, hose->pci_io);
break;
#endif
+
+ case PCI_CLASS_PROCESSOR_POWERPC: /* an agent or end-point */
+ DEBUGF("PCI AutoConfig: Found PowerPC device\n");
+
default:
- pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io);
+ pciauto_setup_device(hose, dev, 6, hose->pci_mem,
+ hose->pci_prefetch, hose->pci_io);
break;
}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 12:29:22 +0000