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fixed resource descriptors

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This commit is contained in:
Markus Fröschle
2013-11-05 05:47:11 +00:00
parent a3b2371608
commit 6af7f6f35b
4 changed files with 47 additions and 62 deletions
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80
BaS_gcc/sources/pci.c
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@@ -28,6 +28,7 @@
#include "pci.h"
#include "stdint.h"
#include "bas_printf.h"
#include "bas_string.h"
#include "util.h"
#include "wait.h"
@@ -59,13 +60,10 @@ static struct pci_class
};
static int num_classes = sizeof(pci_classes) / sizeof(struct pci_class);
static struct handle_index
{
uint16_t handle;
uint16_t index;
} handles[10];
static PCI_RSC_DESC resource_descriptors[10][6]; /* FIXME: fix number of cards */
#define NUM_CARDS 10
#define NUM_RESOURCES 6
uint16_t handles[NUM_CARDS]; /* holds the handle of a card at position = array index */
static struct pci_resource_descriptor resource_descriptors[NUM_CARDS][NUM_RESOURCES]; /* FIXME: fix number of cards */
static char *device_class(int classcode)
{
@@ -174,13 +172,13 @@ void pci_write_config_longword(uint16_t handle, uint16_t offset, uint32_t value)
*
* get resource descriptor chain for handle
*/
PCI_RSC_DESC *pci_get_resource(uint16_t handle)
struct pci_resource_descriptor *pci_get_resource(uint16_t handle)
{
int i;
int index = -1;
for (i = 0; i < 10; i++)
if (handles[i].handle == handle)
for (i = 0; i < NUM_CARDS; i++)
if (handles[i] == handle)
index = i;
if (index == -1)
return NULL;
@@ -266,16 +264,16 @@ static void pci_device_config(uint16_t bus, uint16_t slot, uint16_t function)
uint32_t address;
uint16_t handle;
uint16_t index = - 1;
PCI_RSC_DESC *descriptors;
struct pci_resource_descriptor *descriptors;
int i;
/* determine pci handle from bus, slot + function number */
handle = PCI_HANDLE(bus, slot, function);
/* find index into resource descriptor table for handle */
for (i = 0; i < 10; i++)
for (i = 0; i < NUM_CARDS; i++)
{
if (handles[i].handle == handle)
if (handles[i] == handle)
{
index = i;
break;
@@ -322,7 +320,7 @@ static void pci_device_config(uint16_t bus, uint16_t slot, uint16_t function)
//xprintf("BAR[%d] configured to %08x, size %x\r\n", i, value, size);
/* fill resource descriptor */
descriptors[barnum].next = sizeof(PCI_RSC_DESC);
descriptors[barnum].next = sizeof(struct pci_resource_descriptor);
descriptors[barnum].flags = 0 | FLG_8BIT | FLG_16BIT | FLG_32BIT | 1;
descriptors[barnum].start = mem_address;
descriptors[barnum].length = size;
@@ -351,7 +349,7 @@ static void pci_device_config(uint16_t bus, uint16_t slot, uint16_t function)
//xprintf("BAR[%d] mapped to %08x, size %x\r\n", i, value, size);
/* fill resource descriptor */
descriptors[barnum].next = sizeof(PCI_RSC_DESC);
descriptors[barnum].next = sizeof(struct pci_resource_descriptor);
descriptors[barnum].flags = FLG_IO | FLG_8BIT | FLG_16BIT | FLG_32BIT | 1;
descriptors[barnum].start = io_address;
descriptors[barnum].offset = PCI_MEMORY_OFFSET;
@@ -377,7 +375,6 @@ void pci_scan(void)
uint16_t slot;
uint16_t function;
uint16_t index = 0;
uint16_t i;
xprintf("\r\nPCI bus scan...\r\n\r\n");
xprintf(" Bus|Slot|Func|Vndr|Dev |\r\n");
@@ -402,19 +399,12 @@ void pci_scan(void)
if (PCI_VENDOR_ID(value) != 0x1057 && PCI_DEVICE_ID(value) != 0x5806) /* do not configure bridge */
{
/* save handle to index value so that we later find our resources again */
handles[index].index = index;
handles[index].handle = PCI_HANDLE(bus, slot, function);
handles[index] = PCI_HANDLE(bus, slot, function);
/* configure memory and I/O for card */
pci_device_config(bus, slot, function);
}
//for (i = 0; i < 0x40; i += 4)
//{
//value = pci_read_config_longword(handle, i);
//xprintf("register %02x value= %08x\r\n", i, value);
//}
/* 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 */
@@ -461,37 +451,39 @@ void init_pci(void)
{
xprintf("initializing PCI bridge:");
MCF_PCIARB_PACR = MCF_PCIARB_PACR_INTMPRI
MCF_PCIARB_PACR = MCF_PCIARB_PACR_INTMPRI
+ MCF_PCIARB_PACR_EXTMPRI(0x1F)
+ MCF_PCIARB_PACR_INTMINTEN
+ MCF_PCIARB_PACR_EXTMINTEN(0x1F);
/* Setup burst parameters */
MCF_PCI_PCICR1 = MCF_PCI_PCICR1_CACHELINESIZE(4) + MCF_PCI_PCICR1_LATTIMER(32);
MCF_PCI_PCICR2 = MCF_PCI_PCICR2_MINGNT(16) + MCF_PCI_PCICR2_MAXLAT(16);
/* Setup burst parameters */
MCF_PCI_PCICR1 = MCF_PCI_PCICR1_CACHELINESIZE(4) + MCF_PCI_PCICR1_LATTIMER(32);
MCF_PCI_PCICR2 = MCF_PCI_PCICR2_MINGNT(16) + MCF_PCI_PCICR2_MAXLAT(16);
/* Turn on error signaling */
MCF_PCI_PCIICR = MCF_PCI_PCIICR_TAE + MCF_PCI_PCIICR_TAE + MCF_PCI_PCIICR_REE + 32;
MCF_PCI_PCIGSCR |= MCF_PCI_PCIGSCR_SEE;
/* Turn on error signaling */
MCF_PCI_PCIICR = MCF_PCI_PCIICR_TAE + MCF_PCI_PCIICR_TAE + MCF_PCI_PCIICR_REE + 32;
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;
/* Configure Initiator Windows */
/* initiator window 0 base / translation adress register */
MCF_PCI_PCIIW0BTAR = (PCI_MEMORY_OFFSET + ((PCI_MEMORY_SIZE -1) >> 8)) & 0xffff0000;
/* initiator window 1 base / translation adress register */
MCF_PCI_PCIIW1BTAR = (PCI_IO_OFFSET + ((PCI_IO_SIZE - 1) >> 8)) & 0xffff0000;
/* initiator window 1 base / translation adress register */
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 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;
/* initiator window configuration register */
MCF_PCI_PCIIWCR = MCF_PCI_PCIIWCR_WINCTRL0_MEMRDLINE + MCF_PCI_PCIIWCR_WINCTRL1_IO;
/* reset PCI devices */
MCF_PCI_PCIGSCR &= ~MCF_PCI_PCIGSCR_PR;
/* reset PCI devices */
MCF_PCI_PCIGSCR &= ~MCF_PCI_PCIGSCR_PR;
xprintf("finished\r\n");
xprintf("finished\r\n");
/* initialize resource descriptor table */
memset(&resource_descriptors, 0, NUM_CARDS * NUM_RESOURCES * sizeof(struct pci_resource_descriptor));
pci_scan();
}