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rewritten device scan and corrected PCI address mapping

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This commit is contained in:
Markus Fröschle
2013-11-06 13:21:32 +00:00
parent 5e6419bcd7
commit ea198ced78
1 changed files with 42 additions and 38 deletions
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80
BaS_gcc/sources/pci.c
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@@ -70,6 +70,9 @@ static uint16_t handles[NUM_CARDS];
/* holds the card's resource descriptors; filled in pci_device_config() */
static struct pci_rd resource_descriptors[NUM_CARDS][NUM_RESOURCES];
/*
* retrieve handle for i'th device
*/
static int16_t handle2index(int16_t handle)
{
int i;
@@ -84,6 +87,9 @@ static int16_t handle2index(int16_t handle)
return -1;
}
/*
* retrieve device class (in cleartext) for a PCI classcode
*/
static char *device_class(int classcode)
{
int i;
@@ -378,51 +384,42 @@ static void pci_device_config(uint16_t bus, uint16_t device, uint16_t function)
descriptors[barnum - 1].flags |= FLG_LAST;
}
/*
* scan PCI bus and display devices found. Create a handle for each device and call pci_device_config() for it
*/
void pci_scan(void)
{
uint16_t bus;
uint16_t device;
uint16_t function;
int16_t handle;
int16_t index = 0;
xprintf("\r\nPCI bus scan...\r\n\r\n");
xprintf(" Bus| Dev|Func|Vndr|D-ID|\r\n");
xprintf("----+----+----|----+----|\r\n");
xprintf("----+----+----+----+----|\r\n");
/* FIXME: FireBee USB is on DEVSEL(17), but currently not found for whatever reason */
for (bus = 0; bus < 255; bus++)
handle = pci_find_device(0x0, 0xFFFF, index);
while (handle != PCI_DEVICE_NOT_FOUND)
{
for (device = 0; device < 32; device++)
uint32_t value;
value = pci_read_config_longword(handle, PCIIDR);
xprintf(" %02x | %02x | %02x |%04x|%04x| %s\r\n",
PCI_BUS_FROM_HANDLE(handle),
PCI_DEVICE_FROM_HANDLE(handle),
PCI_FUNCTION_FROM_HANDLE(handle),
PCI_VENDOR_ID(value), PCI_DEVICE_ID(value),
device_class(pci_read_config_byte(handle, PCICCR)));
if (PCI_VENDOR_ID(value) != 0x1057 && PCI_DEVICE_ID(value) != 0x5806) /* do not configure bridge */
{
for (function = 0; function < 8; function++)
{
uint32_t value;
uint16_t handle = PCI_HANDLE(bus, device, function);
/* save handle to index value so that we'll be able to later find our resources */
handles[index++] = handle;
value = pci_read_config_longword(handle, 0);
if (value != 0xffffffff)
{
xprintf(" %02x | %02x | %02x |%04x|%04x| %s\r\n", bus, device, function,
PCI_VENDOR_ID(value),
PCI_DEVICE_ID(value),
device_class(pci_read_config_longword(handle, 0x08) >> 24 & 0xff));
if (PCI_VENDOR_ID(value) != 0x1057 && PCI_DEVICE_ID(value) != 0x5806) /* do not configure bridge */
{
/* save handle to index value so that we'll be able to later find our resources */
handles[index++] = PCI_HANDLE(bus, device, function);
/* configure memory and I/O for card */
pci_device_config(bus, device, function);
}
/* test for multi-function device to avoid ghost device detects */
value = pci_read_config_longword(handle, 0x0c);
if (function == 0 && !(PCI_HEADER_TYPE(value) & 0x80)) /* no multi function device */
function = 8; /* cancel inner loop */
}
}
/* configure memory and I/O for card */
pci_device_config(PCI_BUS_FROM_HANDLE(handle),
PCI_DEVICE_FROM_HANDLE(handle),
PCI_FUNCTION_FROM_HANDLE(handle));
}
handle = pci_find_device(0x0, 0xFFF, ++index);
}
xprintf("\r\n...finished\r\n");
}
@@ -476,17 +473,24 @@ void init_pci(void)
MCF_PCI_PCIGSCR |= MCF_PCI_PCIGSCR_SEE;
/* Configure Initiator Windows */
/* initiator window 0 base / translation adress register */
MCF_PCI_PCIIW0BTAR = (PCI_MEMORY_OFFSET + ((PCI_MEMORY_SIZE -1) >> 8)) & 0xffff0000;
/*
* initiator window 0 base / translation adress register
*
* Window starts at PCI_MEMORY_OFFSET, ends at PCI_MEMORY_OFFSET + PCI_MEMORY_SIZE - 1 (2 GB)
* There is no translation from M54xx address space to PCI address space
*/
MCF_PCI_PCIIW0BTAR = PCI_MEMORY_OFFSET | (((PCI_MEMORY_SIZE - 1) >> 8) & 0xffff0000) |
PCI_MEMORY_OFFSET >> 16;
/* initiator window 1 base / translation adress register */
MCF_PCI_PCIIW1BTAR = (PCI_IO_OFFSET + ((PCI_IO_SIZE - 1) >> 8)) & 0xffff0000;
MCF_PCI_PCIIW1BTAR = (PCI_IO_OFFSET | ((PCI_IO_SIZE - 1) >> 8)) & 0xffff0000;
/* initiator window 2 base / translation address register */
MCF_PCI_PCIIW2BTAR = 0L; /* not used */
/* initiator window configuration register */
MCF_PCI_PCIIWCR = MCF_PCI_PCIIWCR_WINCTRL0_MEMRDLINE + MCF_PCI_PCIIWCR_WINCTRL1_IO;
MCF_PCI_PCIIWCR = MCF_PCI_PCIIWCR_WINCTRL0_MEMRDLINE | MCF_PCI_PCIIWCR_WINCTRL1_IO;
/* initialize target control register */
MCF_PCI_PCITCR = 0;