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PCI device scan works

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This commit is contained in:
Markus Fröschle
2013-10-27 14:58:14 +00:00
parent b092fc2903
commit 9dd9122d09
1 changed files with 49 additions and 4 deletions
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53
BaS_gcc/sources/pci.c
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@@ -31,6 +31,48 @@
#include "util.h"
#include "wait.h"
static struct pci_class
{
int classcode;
char *description;
} pci_classes[] =
{
{ 0x00, "device was built prior definition of the class code field" },
{ 0x01, "Mass Storage Controller" },
{ 0x02, "Network Controller" },
{ 0x03, "Display Controller" },
{ 0x04, "Multimedia Controller" },
{ 0x05, "Memory Controller" },
{ 0x06, "Bridge Device" },
{ 0x07, "Simple Communication Controller" },
{ 0x08, "Base System Peripherial" },
{ 0x09, "Input Device" },
{ 0x0a, "Docking Station" },
{ 0x0b, "Processor" },
{ 0x0c, "Serial Bus Controller" },
{ 0x0d, "Wireless Controller" },
{ 0x0e, "Intelligent I/O Controller" },
{ 0x0f, "Satellite Communication Controller" },
{ 0x10, "Encryption/Decryption Controller" },
{ 0x11, "Data Acquisition and Signal Processing Controller" },
{ 0xff, "Device does not fit any defined class" },
};
static int num_classes = sizeof(pci_classes) / sizeof(struct pci_class);
static char *device_class(int classcode)
{
int i;
for (i = 0; i < num_classes; i++)
{
if (pci_classes[i].classcode == classcode)
{
return pci_classes[i].description;
}
}
return "not found";
}
uint16_t pci_read_config_byte(uint16_t bus, uint16_t slot, uint16_t function, uint16_t offset)
{
uint8_t value;
@@ -164,7 +206,9 @@ void pci_scan(void)
uint16_t function;
uint16_t i;
xprintf("PCI bus scan\r\n");
xprintf("\r\nPCI bus scan...\r\n\r\n");
xprintf(" Bus|Slot|Func|\r\n");
xprintf("----+----+----|\r\n");
for (bus = 0; bus < 1; bus++)
{
for (slot = 0; slot < 32; slot++)
@@ -176,11 +220,12 @@ void pci_scan(void)
value = pci_read_config_longword(bus, slot, function, 0);
if (value != 0xffffffff)
{
xprintf("[%02x] [%02x] [%02x]: %08x\r\n", bus, slot, function, value);
xprintf("[%02x]|[%02x]|[%02x]| %s\r\n", bus, slot, function,
device_class(pci_read_config_longword(bus, slot, function, 0x08) >> 24 & 0xff));
for (i = 0; i < 0x40; i += 4)
{
value = pci_read_config_longword(bus, slot, function, i);
xprintf("register %02x value= %08x\r\n", i, value);
//xprintf("register %02x value= %08x\r\n", i, value);
}
/* test for multi-function device to avoid ghost device detects */
value = pci_read_config_longword(bus, slot, function, 0x0c);
@@ -190,7 +235,7 @@ void pci_scan(void)
}
}
}
xprintf("finished\r\n");
xprintf("\r\n...finished\r\n");
}
/* start of PCI initialization code */