The patch titled
cyrix: fails to detect MediaGX
has been removed from the -mm tree. Its filename was
cyrix-fails-to-detect-mediagx.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: cyrix: fails to detect MediaGX
From: Alan <alan@xxxxxxxxxxxxxxxxxxx>
The old Cyrix 5520 CPU detection code relied upon the PCI layer setup being
done earlier than the CPU setup, which is no longer true. Fortunately we
know that if the processor is a MediaGX we can do type 1 pci config
accesses to check the companion chip. We thus do those directly and from
this find the 5520 and implement the workarounds for the timer problem
Original report from takada@xxxxxxxxxxxxx, I sent a proposed patch which
Takara then corrected, tested and sent back to the list on 10th January.
Submitting for merging as it seems to have been missed
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: <takada@xxxxxxxxxxxxx>
Cc: Jordan Crouse <jordan.crouse@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/i386/kernel/cpu/cyrix.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)
diff -puN arch/i386/kernel/cpu/cyrix.c~cyrix-fails-to-detect-mediagx arch/i386/kernel/cpu/cyrix.c
--- a/arch/i386/kernel/cpu/cyrix.c~cyrix-fails-to-detect-mediagx
+++ a/arch/i386/kernel/cpu/cyrix.c
@@ -8,6 +8,7 @@
#include <asm/timer.h>
#include "cpu.h"
+#include "../../pci/pci.h"
/*
* Read NSC/Cyrix DEVID registers (DIR) to get more detailed info. about the CPU
@@ -183,14 +184,6 @@ static void __cpuinit geode_configure(vo
}
-#ifdef CONFIG_PCI
-static struct pci_device_id __cpuinitdata cyrix_55x0[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5510) },
- { PCI_DEVICE(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5520) },
- { },
-};
-#endif
-
static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
{
unsigned char dir0, dir0_msn, dir0_lsn, dir1 = 0;
@@ -256,8 +249,10 @@ static void __cpuinit init_cyrix(struct
c->coma_bug = 1;
break;
- case 4: /* MediaGX/GXm or Geode GXM/GXLV/GX1 */
+ case 4: { /* MediaGX/GXm or Geode GXM/GXLV/GX1 */
#ifdef CONFIG_PCI
+ u32 vendor, device;
+
/* It isn't really a PCI quirk directly, but the cure is the
same. The MediaGX has deep magic SMM stuff that handles the
SB emulation. It thows away the fifo on disable_dma() which
@@ -273,11 +268,16 @@ static void __cpuinit init_cyrix(struct
printk(KERN_INFO "Working around Cyrix MediaGX virtual DMA bugs.\n");
isa_dma_bridge_buggy = 2;
+ /* We do this before the PCI layer is running. However we
+ are safe here as we know the bridge must be a Cyrix
+ companion and must be present */
+ pci_conf1_read(0, 0, PCI_DEVFN(0x12, 0), PCI_VENDOR_ID, 2, &vendor);
+ pci_conf1_read(0, 0, PCI_DEVFN(0x12, 0), PCI_DEVICE_ID, 2, &device);
/*
* The 5510/5520 companion chips have a funky PIT.
*/
- if (pci_dev_present(cyrix_55x0))
+ if (vendor == PCI_VENDOR_ID_CYRIX && (device == PCI_DEVICE_ID_CYRIX_5510 || device == PCI_DEVICE_ID_CYRIX_5520))
pit_latch_buggy = 1;
#endif
c->x86_cache_size=16; /* Yep 16K integrated cache thats it */
@@ -304,7 +304,7 @@ static void __cpuinit init_cyrix(struct
c->x86_model = (dir1 & 0x20) ? 1 : 2;
}
break;
-
+ }
case 5: /* 6x86MX/M II */
if (dir1 > 7)
{
_
Patches currently in -mm which might be from alan@xxxxxxxxxxxxxxxxxxx are
origin.patch
git-libata-all.patch
sis-warning-fixes.patch
libata-add-a-host-flag-to-indicate-lack-of-iordy.patch
libata-fix-hopefully-all-the-remaining-problems-with.patch
git-mtd.patch
resend-iphase-64bit-cleanup.patch
make-sure-uart-is-powered-up-when-dumping-mctrl-status.patch
perle-multimodem-card-pci-ras-detection.patch
pnx8550-uart-driver.patch
pnx8550-uart-driver-fixes.patch
drivers-scsi-ncr5380c-replacing-yield-with-a.patch
drivers-scsi-mca_53c9xc-save_flags-cli-removal.patch
x86_64-do-not-enable-the-nmi-watchdog-by-default.patch
char-tty-delete-wake_up_interruptible-after-tty_wakeup.patch
char-tty_wakeup-cleanup.patch
proc-remove-useless-and-buggy-nlink-settings.patch
tty-improve-encode_baud_rate-logic.patch
kernel-shut-up-the-irq-mismatch-messages.patch
tty-make-__proc_set_tty-static.patch
tty-clarify-disassociate_ctty.patch
tty-fix-the-locking-for-signal-session-in-disassociate_ctty.patch
signal-use-kill_pgrp-not-kill_pg-in-the-sunos-compatibility-code.patch
signal-rewrite-kill_something_info-so-it-uses-newer-helpers.patch
pid-make-session_of_pgrp-use-struct-pid-instead-of-pid_t.patch
pid-use-struct-pid-for-talking-about-process-groups-in-exitc.patch
pid-replace-is_orphaned_pgrp-with-is_current_pgrp_orphaned.patch
tty-update-the-tty-layer-to-work-with-struct-pid.patch
pid-replace-do-while_each_task_pid-with-do-while_each_pid_task.patch
pid-remove-now-unused-do_each_task_pid-and-while_each_task_pid.patch
pid-remove-the-now-unused-kill_pg-kill_pg_info-and-__kill_pg_info.patch
edac-e752x-bit-mask-fix.patch
edac-e752x-byte-access-fix.patch
edac-new-opteron-athlon64-memory-controller-driver.patch
edac-k8-driver-coding-tidy.patch
sched-avoid-div-in-rebalance_tick.patch
pm3fb-kill-pci_find_device-usage.patch
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