[U-Boot] [PATCH 04/14] pci: Refactor the pciinfo() function
Simon Glass
sjg at chromium.org
Thu Nov 12 22:45:25 CET 2015
This function uses macros to output data. It seems better to use a table of
registers rather than macro-based code generation. It also reduces the
code/data size by 2KB on ARM.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
common/cmd_pci.c | 235 ++++++++++++++++++++++++++++++++++---------------------
1 file changed, 147 insertions(+), 88 deletions(-)
diff --git a/common/cmd_pci.c b/common/cmd_pci.c
index 6e28b70..debcd1c 100644
--- a/common/cmd_pci.c
+++ b/common/cmd_pci.c
@@ -130,6 +130,145 @@ void pci_header_show_brief(pci_dev_t dev)
pci_class_str(class), subclass);
}
+struct pci_reg_info {
+ const char *name;
+ enum pci_size_t size;
+ u8 offset;
+};
+
+static int pci_field_width(enum pci_size_t size)
+{
+ switch (size) {
+ case PCI_SIZE_8:
+ return 2;
+ case PCI_SIZE_16:
+ return 4;
+ case PCI_SIZE_32:
+ default:
+ return 32;
+ }
+}
+
+static unsigned long pci_read_config(pci_dev_t dev, int offset,
+ enum pci_size_t size)
+{
+ u32 val32;
+ u16 val16;
+ u8 val8;
+
+ switch (size) {
+ case PCI_SIZE_8:
+ pci_read_config_byte(dev, offset, &val8);
+ return val8;
+ case PCI_SIZE_16:
+ pci_read_config_word(dev, offset, &val16);
+ return val16;
+ case PCI_SIZE_32:
+ default:
+ pci_read_config_dword(dev, offset, &val32);
+ return val32;
+ }
+}
+
+static void pci_show_regs(pci_dev_t dev, struct pci_reg_info *regs)
+{
+ for (; regs->name; regs++) {
+ printf(" %s =%*s%#.*lx\n", regs->name,
+ (int)(28 - strlen(regs->name)), "",
+ pci_field_width(regs->size),
+ pci_read_config(dev, regs->offset, regs->size));
+ }
+}
+
+static struct pci_reg_info regs_start[] = {
+ { "vendor ID", PCI_SIZE_16, PCI_VENDOR_ID },
+ { "device ID", PCI_SIZE_16, PCI_DEVICE_ID },
+ { "command register ID", PCI_SIZE_16, PCI_COMMAND },
+ { "status register", PCI_SIZE_16, PCI_STATUS },
+ { "revision ID", PCI_SIZE_8, PCI_REVISION_ID },
+ {},
+};
+
+static struct pci_reg_info regs_rest[] = {
+ { "sub class code", PCI_SIZE_8, PCI_CLASS_SUB_CODE },
+ { "programming interface", PCI_SIZE_8, PCI_CLASS_PROG },
+ { "cache line", PCI_SIZE_8, PCI_CACHE_LINE_SIZE },
+ { "latency time", PCI_SIZE_8, PCI_LATENCY_TIMER },
+ { "header type", PCI_SIZE_8, PCI_HEADER_TYPE },
+ { "BIST", PCI_SIZE_8, PCI_BIST },
+ { "base address 0", PCI_SIZE_32, PCI_BASE_ADDRESS_0 },
+ {},
+};
+
+static struct pci_reg_info regs_normal[] = {
+ { "base address 1", PCI_SIZE_32, PCI_BASE_ADDRESS_1 },
+ { "base address 2", PCI_SIZE_32, PCI_BASE_ADDRESS_2 },
+ { "base address 3", PCI_SIZE_32, PCI_BASE_ADDRESS_3 },
+ { "base address 4", PCI_SIZE_32, PCI_BASE_ADDRESS_4 },
+ { "base address 5", PCI_SIZE_32, PCI_BASE_ADDRESS_5 },
+ { "cardBus CIS pointer", PCI_SIZE_32, PCI_CARDBUS_CIS },
+ { "sub system vendor ID", PCI_SIZE_16, PCI_SUBSYSTEM_VENDOR_ID },
+ { "sub system ID", PCI_SIZE_16, PCI_SUBSYSTEM_ID },
+ { "expansion ROM base address", PCI_SIZE_32, PCI_ROM_ADDRESS },
+ { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE },
+ { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN },
+ { "min Grant", PCI_SIZE_8, PCI_MIN_GNT },
+ { "max Latency", PCI_SIZE_8, PCI_MAX_LAT },
+ {},
+};
+
+static struct pci_reg_info regs_bridge[] = {
+ { "base address 1", PCI_SIZE_32, PCI_BASE_ADDRESS_1 },
+ { "primary bus number", PCI_SIZE_8, PCI_PRIMARY_BUS },
+ { "secondary bus number", PCI_SIZE_8, PCI_SECONDARY_BUS },
+ { "subordinate bus number", PCI_SIZE_8, PCI_SUBORDINATE_BUS },
+ { "secondary latency timer", PCI_SIZE_8, PCI_SEC_LATENCY_TIMER },
+ { "IO base", PCI_SIZE_8, PCI_IO_BASE },
+ { "IO limit", PCI_SIZE_8, PCI_IO_LIMIT },
+ { "secondary status", PCI_SIZE_16, PCI_SEC_STATUS },
+ { "memory base", PCI_SIZE_16, PCI_MEMORY_BASE },
+ { "memory limit", PCI_SIZE_16, PCI_MEMORY_LIMIT },
+ { "prefetch memory base", PCI_SIZE_16, PCI_PREF_MEMORY_BASE },
+ { "prefetch memory limit", PCI_SIZE_16, PCI_PREF_MEMORY_LIMIT },
+ { "prefetch memory base upper", PCI_SIZE_32, PCI_PREF_BASE_UPPER32 },
+ { "prefetch memory limit upper", PCI_SIZE_32, PCI_PREF_LIMIT_UPPER32 },
+ { "IO base upper 16 bits", PCI_SIZE_16, PCI_IO_BASE_UPPER16 },
+ { "IO limit upper 16 bits", PCI_SIZE_16, PCI_IO_LIMIT_UPPER16 },
+ { "expansion ROM base address", PCI_SIZE_32, PCI_ROM_ADDRESS1 },
+ { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE },
+ { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN },
+ { "bridge control", PCI_SIZE_16, PCI_BRIDGE_CONTROL },
+ {},
+};
+
+static struct pci_reg_info regs_cardbus[] = {
+ { "capabilities", PCI_SIZE_8, PCI_CB_CAPABILITY_LIST },
+ { "secondary status", PCI_SIZE_16, PCI_CB_SEC_STATUS },
+ { "primary bus number", PCI_SIZE_8, PCI_CB_PRIMARY_BUS },
+ { "CardBus number", PCI_SIZE_8, PCI_CB_CARD_BUS },
+ { "subordinate bus number", PCI_SIZE_8, PCI_CB_SUBORDINATE_BUS },
+ { "CardBus latency timer", PCI_SIZE_8, PCI_CB_LATENCY_TIMER },
+ { "CardBus memory base 0", PCI_SIZE_32, PCI_CB_MEMORY_BASE_0 },
+ { "CardBus memory limit 0", PCI_SIZE_32, PCI_CB_MEMORY_LIMIT_0 },
+ { "CardBus memory base 1", PCI_SIZE_32, PCI_CB_MEMORY_BASE_1 },
+ { "CardBus memory limit 1", PCI_SIZE_32, PCI_CB_MEMORY_LIMIT_1 },
+ { "CardBus IO base 0", PCI_SIZE_16, PCI_CB_IO_BASE_0 },
+ { "CardBus IO base high 0", PCI_SIZE_16, PCI_CB_IO_BASE_0_HI },
+ { "CardBus IO limit 0", PCI_SIZE_16, PCI_CB_IO_LIMIT_0 },
+ { "CardBus IO limit high 0", PCI_SIZE_16, PCI_CB_IO_LIMIT_0_HI },
+ { "CardBus IO base 1", PCI_SIZE_16, PCI_CB_IO_BASE_1 },
+ { "CardBus IO base high 1", PCI_SIZE_16, PCI_CB_IO_BASE_1_HI },
+ { "CardBus IO limit 1", PCI_SIZE_16, PCI_CB_IO_LIMIT_1 },
+ { "CardBus IO limit high 1", PCI_SIZE_16, PCI_CB_IO_LIMIT_1_HI },
+ { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE },
+ { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN },
+ { "bridge control", PCI_SIZE_16, PCI_CB_BRIDGE_CONTROL },
+ { "subvendor ID", PCI_SIZE_16, PCI_CB_SUBSYSTEM_VENDOR_ID },
+ { "subdevice ID", PCI_SIZE_16, PCI_CB_SUBSYSTEM_ID },
+ { "PC Card 16bit base address", PCI_SIZE_32, PCI_CB_LEGACY_MODE_BASE },
+ {},
+};
+
/*
* Subroutine: PCI_Header_Show
*
@@ -143,110 +282,30 @@ void pci_header_show_brief(pci_dev_t dev)
void pci_header_show(pci_dev_t dev)
{
u8 _byte, header_type;
- u16 _word;
- u32 _dword;
-
-#define PRINT(msg, type, reg) \
- pci_read_config_##type(dev, reg, &_##type); \
- printf(msg, _##type)
-
-#define PRINT2(msg, type, reg, func) \
- pci_read_config_##type(dev, reg, &_##type); \
- printf(msg, _##type, func(_##type))
pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type);
+ pci_show_regs(dev, regs_start);
- PRINT (" vendor ID = 0x%.4x\n", word, PCI_VENDOR_ID);
- PRINT (" device ID = 0x%.4x\n", word, PCI_DEVICE_ID);
- PRINT (" command register = 0x%.4x\n", word, PCI_COMMAND);
- PRINT (" status register = 0x%.4x\n", word, PCI_STATUS);
- PRINT (" revision ID = 0x%.2x\n", byte, PCI_REVISION_ID);
- PRINT2(" class code = 0x%.2x (%s)\n", byte, PCI_CLASS_CODE,
- pci_class_str);
- PRINT (" sub class code = 0x%.2x\n", byte, PCI_CLASS_SUB_CODE);
- PRINT (" programming interface = 0x%.2x\n", byte, PCI_CLASS_PROG);
- PRINT (" cache line = 0x%.2x\n", byte, PCI_CACHE_LINE_SIZE);
- PRINT (" latency time = 0x%.2x\n", byte, PCI_LATENCY_TIMER);
- PRINT (" header type = 0x%.2x\n", byte, PCI_HEADER_TYPE);
- PRINT (" BIST = 0x%.2x\n", byte, PCI_BIST);
- PRINT (" base address 0 = 0x%.8x\n", dword, PCI_BASE_ADDRESS_0);
+ pci_read_config_byte(dev, PCI_CLASS_CODE, &_byte);
+ printf(" class code = 0x%.2x (%s)\n", _byte,
+ pci_class_str(_byte));
+ pci_show_regs(dev, regs_rest);
switch (header_type & 0x03) {
case PCI_HEADER_TYPE_NORMAL: /* "normal" PCI device */
- PRINT (" base address 1 = 0x%.8x\n", dword, PCI_BASE_ADDRESS_1);
- PRINT (" base address 2 = 0x%.8x\n", dword, PCI_BASE_ADDRESS_2);
- PRINT (" base address 3 = 0x%.8x\n", dword, PCI_BASE_ADDRESS_3);
- PRINT (" base address 4 = 0x%.8x\n", dword, PCI_BASE_ADDRESS_4);
- PRINT (" base address 5 = 0x%.8x\n", dword, PCI_BASE_ADDRESS_5);
- PRINT (" cardBus CIS pointer = 0x%.8x\n", dword, PCI_CARDBUS_CIS);
- PRINT (" sub system vendor ID = 0x%.4x\n", word, PCI_SUBSYSTEM_VENDOR_ID);
- PRINT (" sub system ID = 0x%.4x\n", word, PCI_SUBSYSTEM_ID);
- PRINT (" expansion ROM base address = 0x%.8x\n", dword, PCI_ROM_ADDRESS);
- PRINT (" interrupt line = 0x%.2x\n", byte, PCI_INTERRUPT_LINE);
- PRINT (" interrupt pin = 0x%.2x\n", byte, PCI_INTERRUPT_PIN);
- PRINT (" min Grant = 0x%.2x\n", byte, PCI_MIN_GNT);
- PRINT (" max Latency = 0x%.2x\n", byte, PCI_MAX_LAT);
+ pci_show_regs(dev, regs_normal);
break;
-
case PCI_HEADER_TYPE_BRIDGE: /* PCI-to-PCI bridge */
-
- PRINT (" base address 1 = 0x%.8x\n", dword, PCI_BASE_ADDRESS_1);
- PRINT (" primary bus number = 0x%.2x\n", byte, PCI_PRIMARY_BUS);
- PRINT (" secondary bus number = 0x%.2x\n", byte, PCI_SECONDARY_BUS);
- PRINT (" subordinate bus number = 0x%.2x\n", byte, PCI_SUBORDINATE_BUS);
- PRINT (" secondary latency timer = 0x%.2x\n", byte, PCI_SEC_LATENCY_TIMER);
- PRINT (" IO base = 0x%.2x\n", byte, PCI_IO_BASE);
- PRINT (" IO limit = 0x%.2x\n", byte, PCI_IO_LIMIT);
- PRINT (" secondary status = 0x%.4x\n", word, PCI_SEC_STATUS);
- PRINT (" memory base = 0x%.4x\n", word, PCI_MEMORY_BASE);
- PRINT (" memory limit = 0x%.4x\n", word, PCI_MEMORY_LIMIT);
- PRINT (" prefetch memory base = 0x%.4x\n", word, PCI_PREF_MEMORY_BASE);
- PRINT (" prefetch memory limit = 0x%.4x\n", word, PCI_PREF_MEMORY_LIMIT);
- PRINT (" prefetch memory base upper = 0x%.8x\n", dword, PCI_PREF_BASE_UPPER32);
- PRINT (" prefetch memory limit upper = 0x%.8x\n", dword, PCI_PREF_LIMIT_UPPER32);
- PRINT (" IO base upper 16 bits = 0x%.4x\n", word, PCI_IO_BASE_UPPER16);
- PRINT (" IO limit upper 16 bits = 0x%.4x\n", word, PCI_IO_LIMIT_UPPER16);
- PRINT (" expansion ROM base address = 0x%.8x\n", dword, PCI_ROM_ADDRESS1);
- PRINT (" interrupt line = 0x%.2x\n", byte, PCI_INTERRUPT_LINE);
- PRINT (" interrupt pin = 0x%.2x\n", byte, PCI_INTERRUPT_PIN);
- PRINT (" bridge control = 0x%.4x\n", word, PCI_BRIDGE_CONTROL);
+ pci_show_regs(dev, regs_bridge);
break;
-
case PCI_HEADER_TYPE_CARDBUS: /* PCI-to-CardBus bridge */
-
- PRINT (" capabilities = 0x%.2x\n", byte, PCI_CB_CAPABILITY_LIST);
- PRINT (" secondary status = 0x%.4x\n", word, PCI_CB_SEC_STATUS);
- PRINT (" primary bus number = 0x%.2x\n", byte, PCI_CB_PRIMARY_BUS);
- PRINT (" CardBus number = 0x%.2x\n", byte, PCI_CB_CARD_BUS);
- PRINT (" subordinate bus number = 0x%.2x\n", byte, PCI_CB_SUBORDINATE_BUS);
- PRINT (" CardBus latency timer = 0x%.2x\n", byte, PCI_CB_LATENCY_TIMER);
- PRINT (" CardBus memory base 0 = 0x%.8x\n", dword, PCI_CB_MEMORY_BASE_0);
- PRINT (" CardBus memory limit 0 = 0x%.8x\n", dword, PCI_CB_MEMORY_LIMIT_0);
- PRINT (" CardBus memory base 1 = 0x%.8x\n", dword, PCI_CB_MEMORY_BASE_1);
- PRINT (" CardBus memory limit 1 = 0x%.8x\n", dword, PCI_CB_MEMORY_LIMIT_1);
- PRINT (" CardBus IO base 0 = 0x%.4x\n", word, PCI_CB_IO_BASE_0);
- PRINT (" CardBus IO base high 0 = 0x%.4x\n", word, PCI_CB_IO_BASE_0_HI);
- PRINT (" CardBus IO limit 0 = 0x%.4x\n", word, PCI_CB_IO_LIMIT_0);
- PRINT (" CardBus IO limit high 0 = 0x%.4x\n", word, PCI_CB_IO_LIMIT_0_HI);
- PRINT (" CardBus IO base 1 = 0x%.4x\n", word, PCI_CB_IO_BASE_1);
- PRINT (" CardBus IO base high 1 = 0x%.4x\n", word, PCI_CB_IO_BASE_1_HI);
- PRINT (" CardBus IO limit 1 = 0x%.4x\n", word, PCI_CB_IO_LIMIT_1);
- PRINT (" CardBus IO limit high 1 = 0x%.4x\n", word, PCI_CB_IO_LIMIT_1_HI);
- PRINT (" interrupt line = 0x%.2x\n", byte, PCI_INTERRUPT_LINE);
- PRINT (" interrupt pin = 0x%.2x\n", byte, PCI_INTERRUPT_PIN);
- PRINT (" bridge control = 0x%.4x\n", word, PCI_CB_BRIDGE_CONTROL);
- PRINT (" subvendor ID = 0x%.4x\n", word, PCI_CB_SUBSYSTEM_VENDOR_ID);
- PRINT (" subdevice ID = 0x%.4x\n", word, PCI_CB_SUBSYSTEM_ID);
- PRINT (" PC Card 16bit base address = 0x%.8x\n", dword, PCI_CB_LEGACY_MODE_BASE);
+ pci_show_regs(dev, regs_cardbus);
break;
default:
printf("unknown header\n");
break;
}
-
-#undef PRINT
-#undef PRINT2
}
/* Convert the "bus.device.function" identifier into a number.
--
2.6.0.rc2.230.g3dd15c0
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