From 3a8565a77bbf8f41c2c5560fb2c195c71949fc8c Mon Sep 17 00:00:00 2001 From: Rudolf Marek Date: Thu, 26 Mar 2009 21:45:26 +0000 Subject: During the suspend/resume programming I came to an issue that first 4KB of memory must be clear with 0s because otherwise the resources of K8 will be totally messed up. res = probe_resource(dev, 0x100 + (reg | link)); This is called with dev = NULL and this is no good for probe_resource at all. The attached patch fixes the potential problems and of course the problem itself. On one particular place was missing test if the device really exists. This was copied to fam10 and perhaps the same issue is in v3 (DID NOT check). The rest of the patch is just very paranoid and do all checkings. Signed-off-by: Rudolf Marek Acked-by: Myles Watson --This line, and those below, will be igno red-- M src/devices/pci_ops.c M src/northbridge/amd/amdk8/northbridge.c M src/northbridge/amd/amdfam10/northbridge.c git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4030 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/devices/pci_ops.c | 8 +++++++- src/northbridge/amd/amdfam10/northbridge.c | 2 ++ src/northbridge/amd/amdk8/northbridge.c | 31 ++++++++++++++++-------------- 3 files changed, 26 insertions(+), 15 deletions(-) diff --git a/src/devices/pci_ops.c b/src/devices/pci_ops.c index c6d85f284e..08792f209d 100644 --- a/src/devices/pci_ops.c +++ b/src/devices/pci_ops.c @@ -27,7 +27,13 @@ static struct bus *get_pbus(device_t dev) { - struct bus *pbus = dev->bus; + struct bus *pbus; + + if (!dev) + printk_alert("get_pbus: dev is NULL!\n"); + + pbus = dev->bus; + while(pbus && pbus->dev && !ops_pci_bus(pbus)) { if (pbus == pbus->dev->bus) { printk_alert("%s in endless loop looking for a parent " diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index bdb743387d..95e09f4c6a 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -338,6 +338,8 @@ static int reg_useable(u32 reg,device_t goal_dev, u32 goal_nodeid, for(nodeid = 0; !res && (nodeid < NODE_NUMS); nodeid++) { device_t dev; dev = __f0_dev[nodeid]; + if (!dev) + continue; for(link = 0; !res && (link < 8); link++) { res = probe_resource(dev, 0x1000 + reg + (link<<16)); // 8 links, 0x1000 man f1, } diff --git a/src/northbridge/amd/amdk8/northbridge.c b/src/northbridge/amd/amdk8/northbridge.c index c2c89d1ffb..59cbbff4d0 100644 --- a/src/northbridge/amd/amdk8/northbridge.c +++ b/src/northbridge/amd/amdk8/northbridge.c @@ -291,9 +291,11 @@ static int reg_useable(unsigned reg, unsigned nodeid, link; int result; res = 0; - for(nodeid = 0; !res && (nodeid < 8); nodeid++) { + for(nodeid = 0; !res && (nodeid < FX_DEVS); nodeid++) { device_t dev; dev = __f0_dev[nodeid]; + if (!dev) + continue; for(link = 0; !res && (link < 3); link++) { res = probe_resource(dev, 0x100 + (reg | link)); } @@ -760,14 +762,15 @@ static struct hw_mem_hole_info get_hw_mem_hole_info(void) mem_hole.hole_startk = HW_MEM_HOLE_SIZEK; mem_hole.node_id = -1; - for (i = 0; i < 8; i++) { + for (i = 0; i < FX_DEVS; i++) { uint32_t base; uint32_t hole; base = f1_read_config32(0x40 + (i << 3)); if ((base & ((1<<1)|(1<<0))) != ((1<<1)|(1<<0))) { continue; } - + if (!__f1_dev[i]) + continue; hole = pci_read_config32(__f1_dev[i], 0xf0); if(hole & 1) { // we find the hole mem_hole.hole_startk = (hole & (0xff<<24)) >> 10; @@ -834,15 +837,15 @@ static void disable_hoist_memory(unsigned long hole_startk, int i) limit = f1_read_config32(0x44 + (i << 3)); f1_write_config32(0x44 + (i << 3),limit - (hole_sizek << 2)); dev = __f1_dev[i]; - hoist = pci_read_config32(dev, 0xf0); - if(hoist & 1) { - pci_write_config32(dev, 0xf0, 0); - } - else { - base = pci_read_config32(dev, 0x40 + (i << 3)); - f1_write_config32(0x40 + (i << 3),base - (hole_sizek << 2)); + if (dev) { + hoist = pci_read_config32(dev, 0xf0); + if(hoist & 1) { + pci_write_config32(dev, 0xf0, 0); + } else { + base = pci_read_config32(dev, 0x40 + (i << 3)); + f1_write_config32(0x40 + (i << 3),base - (hole_sizek << 2)); + } } - } static uint32_t hoist_memory(unsigned long hole_startk, int i) @@ -878,7 +881,7 @@ static uint32_t hoist_memory(unsigned long hole_startk, int i) base |= (4*1024*1024)<<2; f1_write_config32(0x40 + (i<<3), base); } - else + else if (dev) { hoist = /* hole start address */ ((hole_startk << 10) & 0xff000000) + @@ -1020,7 +1023,7 @@ static void pci_domain_set_resources(device_t dev) #if HW_MEM_HOLE_SIZE_AUTO_INC == 1 //We need to double check if the mmio_basek is valid for hole setting, if it is equal to basek, we need to decrease it some uint32_t basek_pri; - for (i = 0; i < 8; i++) { + for (i = 0; i < FX_DEVS; i++) { uint32_t base; uint32_t basek; base = f1_read_config32(0x40 + (i << 3)); @@ -1045,7 +1048,7 @@ static void pci_domain_set_resources(device_t dev) #endif idx = 0x10; - for(i = 0; i < 8; i++) { + for(i = 0; i < FX_DEVS; i++) { uint32_t base, limit; unsigned basek, limitk, sizek; base = f1_read_config32(0x40 + (i << 3)); -- cgit v1.2.3