Bug 19017
| Summary: | Oops with agpgart on a startup | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Michal Jaegermann <michal> |
| Component: | kernel | Assignee: | Michael K. Johnson <johnsonm> |
| Status: | CLOSED RAWHIDE | QA Contact: | Brock Organ <borgan> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.3 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | alpha | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2000-12-14 16:15:46 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Opps happens on this code:
/* Write out the address of the gatt table */
OUTREG32(amd_irongate_private.registers, AMD_ATTBASE,
agp_bridge.gatt_bus_addr);
Line 1667 in drivers/char/agp/agpgart_be.c, function
amd_irongate_configure().
Here is a patch:
--- linux-2.2.18px/drivers/char/agp/agp.h~ Tue Oct 3 16:03:13 2000
+++ linux-2.2.18px/drivers/char/agp/agp.h Tue Oct 17 10:23:14 2000
@@ -27,6 +27,8 @@
#ifndef _AGP_BACKEND_PRIV_H
#define _AGP_BACKEND_PRIV_H 1
+#include <asm/io.h>
+
enum aper_size_type {
U8_APER_SIZE,
U16_APER_SIZE,
@@ -119,13 +121,13 @@
void (*free_by_type) (agp_memory *);
};
-#define OUTREG32(mmap, addr, val) *(volatile u32 *)(mmap + (addr)) = (val)
-#define OUTREG16(mmap, addr, val) *(volatile u16 *)(mmap + (addr)) = (val)
-#define OUTREG8 (mmap, addr, val) *(volatile u8 *) (mmap + (addr)) = (val)
-
-#define INREG32(mmap, addr) *(volatile u32 *)(mmap + (addr))
-#define INREG16(mmap, addr) *(volatile u16 *)(mmap + (addr))
-#define INREG8 (mmap, addr) *(volatile u8 *) (mmap + (addr))
+#define OUTREG32(mmap, addr, val) writel((val),(mmap + (addr)))
+#define OUTREG16(mmap, addr, val) writew((val),(mmap + (addr)))
+#define OUTREG8 (mmap, addr, val) writeb((val),(mmap + (addr)))
+
+#define INREG32(mmap, addr) readl(mmap + (addr))
+#define INREG16(mmap, addr) readw(mmap + (addr))
+#define INREG8 (mmap, addr) readb(mmap + (addr))
#define CACHE_FLUSH agp_bridge.cache_flush
#define A_SIZE_8(x) ((aper_size_info_8 *) x)
The module still may be not doing anything useful but at least will
not oops. For x86 patched code compiles to exactly the same binary
object file as before
I believe this is fixed in the current rawhide kernels |
During startup modprobe ends up with a segmentation fault because of the following oops: Linux version 2.2.17-3 (root.redhat.com) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 Thu Oct 5 16:55:13 EDT 2000 Booting GENERIC on Nautilus using machine vector NAUTILUS from SRM Command line: root=/dev/hda1 Iron stat_cmd 2100006 Iron dramms 2060300 ..... Linux agpgart interface v0.99 (c) Jeff Hartmann agpgart: Maximum main memory to use for agp memory: 204M agpgart: Detected AMD Irongate chipset Unable to handle kernel paging request at virtual address 0000000062000004 modprobe(156): Oops 1 pc = [<fffffe000084cfc8>] ra = [<fffffe000084cf9c>] ps = 0000 v0 = 0000000000000000 t0 = 0000000062000000 t1 = 0000000062000000 t2 = 0000000003ec0000 t3 = 00000000000016c2 t4 = fffffe000085c000 t5 = fffffe000085c000 t6 = fffffffe00000000 t7 = fffffc000dd6c000 s0 = fffffe0000850f68 s1 = fffffe0000851080 s2 = fffffe0000850a88 s3 = 0000000000000001 s4 = 0000000000000001 s5 = fffffe0000850f68 s6 = fffffc000dd6ff00 a0 = fffffd01fe000014 a1 = 00000000000000b0 a2 = 0000000000000080 a3 = fffffc00005b32f0 a4 = fffffc000dd6fd70 a5 = fffffc000dd6fd68 t8 = 0000000000000001 t9 = fffffc0000582fdc t10= 0000000000000000 t11= 0000000000000001 pv = fffffc000031d3a0 at = fffffe000085c000 gp = fffffe00008590c8 sp = fffffc000dd6fd98 Code: 47f01412 or zero,128,a2 4441f102 andnot t1,15,t1 44420401 or t1,t1,t0 b05e0020 stl t1,32(sp) 4821f621 zapnot t0,15,t0 b42a0000 stq t0,0(s1) *b0610004 stl t2,4(t0) a6090028 ldq a0,40(sTrace: 331cb4 33b87c 310cf8 44fd60 After that 'lsmod' produces, among other things, agpgart 29984 1 (initializing) and 'agpgart' is impossible to delete. This happens because kudzu generates this in /etc/sysconfig/hwconf: class: OTHER bus: PCI detached: 0 driver: agpgart desc: "Advanced Micro Devices [AMD]|AMD-751 [Irongate] System Controller" vendorId: 1022 deviceId: 7006 subVendorId: 0000 subDeviceId: 0000 pciType: 1 which is inded correct as shown by 'lspci -tv' -[00]-+-00.0 Advanced Micro Devices [AMD] AMD-751 [Irongate] System Controller +-01.0-[02]-- +-03.0 Acer Laboratories Inc. [ALi]: Unknown device 5453 +-06.0 Acer Laboratories Inc. [ALi]: Unknown device 5451 +-07.0 Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge [Aladdin IV] +-08.0 Symbios Logic Inc. (formerly NCR) 53c895 +-09.0 Texas Instruments TVP4020 [Permedia 2] +-0b.0 Digital Equipment Corporation DECchip 21142/43 +-10.0 Acer Laboratories Inc. [ALi] M5229 IDE +-11.0 Acer Laboratories Inc. [ALi] M7101 PMU \-14.0 Acer Laboratories Inc. [ALi] M5237 USB Michal michal 0)