#include <console/console.h>
#include <arch/pirq_routing.h>
#include <string.h>
+#include <device/pci.h>
-#if DEBUG==1
-void check_pirq_routing_table(void)
+#if CONFIG_DEBUG_PIRQ
+static void check_pirq_routing_table(struct irq_routing_table *rt)
{
- const uint8_t *addr;
- const struct irq_routing_table *rt;
+ uint8_t *addr = (uint8_t *)rt;
+ uint8_t sum=0;
int i;
- uint8_t sum;
- printk_info("Checking IRQ routing tables...\n");
+ printk(BIOS_INFO, "Checking Interrupt Routing Table consistency...\n");
-#if defined(IRQ_SLOT_COUNT)
- if (sizeof(intel_irq_routing_table) != intel_irq_routing_table.size) {
- printk_warning("Inconsistent IRQ routing table size (0x%x/0x%x)\n",
- sizeof(intel_irq_routing_table),
- intel_irq_routing_table.size
- );
- intel_irq_routing_table.size=sizeof(intel_irq_routing_table);
+ if (sizeof(struct irq_routing_table) != rt->size) {
+ printk(BIOS_WARNING, "Inconsistent Interrupt Routing Table size (0x%x/0x%x).\n",
+ (unsigned int) sizeof(struct irq_routing_table),
+ rt->size
+ );
+ rt->size=sizeof(struct irq_routing_table);
}
-#endif
-
- rt = &intel_irq_routing_table;
- addr = (uint8_t *)rt;
- sum = 0;
for (i = 0; i < rt->size; i++)
sum += addr[i];
- printk_debug("%s:%6d:%s() - irq_routing_table located at: 0x%p\n",
- __FILE__, __LINE__, __FUNCTION__, addr);
+ printk(BIOS_DEBUG, "%s(): Interrupt Routing Table located at %p.\n",
+ __func__, addr);
+
-
sum = rt->checksum - sum;
if (sum != rt->checksum) {
- printk_warning("%s:%6d:%s() - "
- "checksum is: 0x%02x but should be: 0x%02x\n",
- __FILE__, __LINE__, __FUNCTION__, rt->checksum, sum);
+ printk(BIOS_WARNING, "Interrupt Routing Table checksum is: 0x%02x but should be: 0x%02x.\n",
+ rt->checksum, sum);
rt->checksum = sum;
}
if (rt->signature != PIRQ_SIGNATURE || rt->version != PIRQ_VERSION ||
- rt->size % 16 || rt->size < sizeof(struct irq_routing_table)) {
- printk_warning("%s:%6d:%s() - "
- "Interrupt Routing Table not valid\n",
- __FILE__, __LINE__, __FUNCTION__);
+ rt->size % 16 ) {
+ printk(BIOS_WARNING, "Interrupt Routing Table not valid.\n");
return;
}
for (i=0; i<rt->size; i++)
sum += addr[i];
+ /* We're manually fixing the checksum above. This warning can probably
+ * never happen because if the target location is read-only this
+ * function would have bailed out earlier.
+ */
if (sum) {
- printk_warning("%s:%6d:%s() - "
- "checksum error in irq routing table\n",
- __FILE__, __LINE__, __FUNCTION__);
+ printk(BIOS_WARNING, "Checksum error in Interrupt Routing Table "
+ "could not be fixed.\n");
}
- printk_info("done.\n");
+ printk(BIOS_INFO, "done.\n");
}
-int verify_copy_pirq_routing_table(unsigned long addr)
+static int verify_copy_pirq_routing_table(unsigned long addr)
{
int i;
uint8_t *rt_orig, *rt_curr;
rt_curr = (uint8_t*)addr;
rt_orig = (uint8_t*)&intel_irq_routing_table;
- printk_info("Verifing copy of IRQ routing tables at 0x%x...", addr);
+ printk(BIOS_INFO, "Verifying copy of Interrupt Routing Table at 0x%08lx... ", addr);
for (i = 0; i < intel_irq_routing_table.size; i++) {
if (*(rt_curr + i) != *(rt_orig + i)) {
- printk_info("failed\n");
+ printk(BIOS_INFO, "failed\n");
return -1;
}
}
- printk_info("done\n");
+ printk(BIOS_INFO, "done\n");
+
+ check_pirq_routing_table((struct irq_routing_table *)addr);
+
return 0;
}
-#else
-#define verify_copy_pirq_routing_table(addr)
#endif
unsigned long copy_pirq_routing_table(unsigned long addr)
addr &= ~15;
/* This table must be betweeen 0xf0000 & 0x100000 */
- printk_info("Copying IRQ routing tables to 0x%x...", addr);
+ printk(BIOS_INFO, "Copying Interrupt Routing Table to 0x%08lx... ", addr);
memcpy((void *)addr, &intel_irq_routing_table, intel_irq_routing_table.size);
- printk_info("done.\n");
+ printk(BIOS_INFO, "done.\n");
+#if CONFIG_DEBUG_PIRQ
verify_copy_pirq_routing_table(addr);
+#endif
+ pirq_routing_irqs(addr);
return addr + intel_irq_routing_table.size;
}
+
+#if CONFIG_PIRQ_ROUTE
+void pirq_routing_irqs(unsigned long addr)
+{
+ int i, j, k, num_entries;
+ unsigned char irq_slot[4];
+ unsigned char pirq[4] = {0, 0, 0, 0};
+ struct irq_routing_table *pirq_tbl;
+
+ pirq_tbl = (struct irq_routing_table *)(addr);
+ num_entries = (pirq_tbl->size - 32) / 16;
+
+ /* Set PCI IRQs. */
+ for (i = 0; i < num_entries; i++) {
+
+ printk(BIOS_DEBUG, "PIRQ Entry %d Dev/Fn: %X Slot: %d\n", i,
+ pirq_tbl->slots[i].devfn >> 3, pirq_tbl->slots[i].slot);
+
+ for (j = 0; j < 4; j++) {
+
+ int link = pirq_tbl->slots[i].irq[j].link;
+ int bitmap = pirq_tbl->slots[i].irq[j].bitmap;
+ int irq = 0;
+
+ printk(BIOS_DEBUG, "INT: %c link: %x bitmap: %x ",
+ 'A' + j, link, bitmap);
+
+ if (!bitmap|| !link || link > 4) {
+
+ printk(BIOS_DEBUG, "not routed\n");
+ irq_slot[j] = irq;
+ continue;
+ }
+
+ /* yet not routed */
+ if (!pirq[link - 1]) {
+
+ for (k = 2; k <= 15; k++) {
+
+ if (!((bitmap >> k) & 1))
+ continue;
+
+ irq = k;
+
+ /* yet not routed */
+ if (pirq[0] != irq && pirq[1] != irq && pirq[2] != irq && pirq[3] != irq)
+ break;
+ }
+
+ if (irq)
+ pirq[link - 1] = irq;
+ }
+ else
+ irq = pirq[link - 1];
+
+ printk(BIOS_DEBUG, "IRQ: %d\n", irq);
+ irq_slot[j] = irq;
+ }
+
+ /* Bus, device, slots IRQs for {A,B,C,D}. */
+ pci_assign_irqs(pirq_tbl->slots[i].bus,
+ pirq_tbl->slots[i].devfn >> 3, irq_slot);
+ }
+
+ printk(BIOS_DEBUG, "PIRQ1: %d\n", pirq[0]);
+ printk(BIOS_DEBUG, "PIRQ2: %d\n", pirq[1]);
+ printk(BIOS_DEBUG, "PIRQ3: %d\n", pirq[2]);
+ printk(BIOS_DEBUG, "PIRQ4: %d\n", pirq[3]);
+
+ pirq_assign_irqs(pirq);
+}
+#endif
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