From e7e5ebd0c2432b0c8b9d7269dfb074772ad95535 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20B=C3=BCsch?= <mb@bu3sch.de>
Date: Tue, 19 Feb 2008 16:50:12 +0000
Subject: [PATCH] ssb: Fix the horrible crash of innocent cardbus cards.
No Animals were harmed in the production of this patch.
SVN-Revision: 10497
---
.../brcm47xx/files/arch/mips/bcm947xx/setup.c | 3 +
.../622-ssb-cardbus-fixes.patch | 116 ++++++++++++++++++
2 files changed, 119 insertions(+)
create mode 100644 target/linux/brcm47xx/patches-2.6.23/622-ssb-cardbus-fixes.patch
diff --git a/target/linux/brcm47xx/files/arch/mips/bcm947xx/setup.c b/target/linux/brcm47xx/files/arch/mips/bcm947xx/setup.c
index 2c106c9b26..85ff1cf813 100644
--- a/target/linux/brcm47xx/files/arch/mips/bcm947xx/setup.c
+++ b/target/linux/brcm47xx/files/arch/mips/bcm947xx/setup.c
@@ -158,6 +158,9 @@ static int bcm47xx_get_invariants(struct ssb_bus *bus, struct ssb_init_invariant
bcm47xx_fill_sprom(&iv->sprom);
+ if ((s = nvram_get("cardbus")))
+ iv->has_cardbus_slot = !!simple_strtoul(s, NULL, 10);
+
return 0;
}
diff --git a/target/linux/brcm47xx/patches-2.6.23/622-ssb-cardbus-fixes.patch b/target/linux/brcm47xx/patches-2.6.23/622-ssb-cardbus-fixes.patch
new file mode 100644
index 0000000000..1d2779ed74
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.23/622-ssb-cardbus-fixes.patch
@@ -0,0 +1,116 @@
+Index: linux-2.6.23.16/drivers/ssb/driver_pcicore.c
+===================================================================
+--- linux-2.6.23.16.orig/drivers/ssb/driver_pcicore.c 2008-02-19 16:37:14.000000000 +0100
++++ linux-2.6.23.16/drivers/ssb/driver_pcicore.c 2008-02-19 17:25:26.000000000 +0100
+@@ -11,6 +11,7 @@
+ #include <linux/ssb/ssb.h>
+ #include <linux/pci.h>
+ #include <linux/delay.h>
++#include <linux/ssb/ssb_embedded.h>
+
+ #include "ssb_private.h"
+
+@@ -27,6 +28,18 @@ void pcicore_write32(struct ssb_pcicore
+ ssb_write32(pc->dev, offset, value);
+ }
+
++static inline
++u16 pcicore_read16(struct ssb_pcicore *pc, u16 offset)
++{
++ return ssb_read16(pc->dev, offset);
++}
++
++static inline
++void pcicore_write16(struct ssb_pcicore *pc, u16 offset, u16 value)
++{
++ ssb_write16(pc->dev, offset, value);
++}
++
+ /**************************************************
+ * Code for hostmode operation.
+ **************************************************/
+@@ -123,8 +136,10 @@ static u32 get_cfgspace_addr(struct ssb_
+ u32 addr = 0;
+ u32 tmp;
+
+- if (unlikely(pc->cardbusmode && dev > 1))
++ /* We do only have one cardbus device behind the bridge. */
++ if (pc->cardbusmode && (dev >= 1))
+ goto out;
++
+ if (bus == 0) {
+ /* Type 0 transaction */
+ if (unlikely(dev >= SSB_PCI_SLOT_MAX))
+@@ -324,7 +339,16 @@ static void ssb_pcicore_init_hostmode(st
+ pcicore_write32(pc, SSB_PCICORE_ARBCTL, val);
+ udelay(1); /* Assertion time demanded by the PCI standard */
+
+- /*TODO cardbus mode */
++ if (pc->dev->bus->has_cardbus_slot) {
++ ssb_dprintk(KERN_INFO PFX "CardBus slot detected\n");
++ pc->cardbusmode = 1;
++ /* GPIO 1 resets the bridge */
++ ssb_gpio_out(pc->dev->bus, 1, 1);
++ ssb_gpio_outen(pc->dev->bus, 1, 1);
++ pcicore_write16(pc, SSB_PCICORE_SPROM(0),
++ pcicore_read16(pc, SSB_PCICORE_SPROM(0))
++ | 0x0400);
++ }
+
+ /* 64MB I/O window */
+ pcicore_write32(pc, SSB_PCICORE_SBTOPCI0,
+Index: linux-2.6.23.16/drivers/ssb/main.c
+===================================================================
+--- linux-2.6.23.16.orig/drivers/ssb/main.c 2008-02-19 15:50:44.000000000 +0100
++++ linux-2.6.23.16/drivers/ssb/main.c 2008-02-19 16:38:31.000000000 +0100
+@@ -559,6 +559,7 @@ static int ssb_fetch_invariants(struct s
+ goto out;
+ memcpy(&bus->boardinfo, &iv.boardinfo, sizeof(iv.boardinfo));
+ memcpy(&bus->sprom, &iv.sprom, sizeof(iv.sprom));
++ bus->has_cardbus_slot = iv.has_cardbus_slot;
+ out:
+ return err;
+ }
+Index: linux-2.6.23.16/include/linux/ssb/ssb.h
+===================================================================
+--- linux-2.6.23.16.orig/include/linux/ssb/ssb.h 2008-02-19 15:50:44.000000000 +0100
++++ linux-2.6.23.16/include/linux/ssb/ssb.h 2008-02-19 16:38:31.000000000 +0100
+@@ -282,6 +282,8 @@ struct ssb_bus {
+ struct ssb_boardinfo boardinfo;
+ /* Contents of the SPROM. */
+ struct ssb_sprom sprom;
++ /* If the board has a cardbus slot, this is set to true. */
++ bool has_cardbus_slot;
+
+ #ifdef CONFIG_SSB_EMBEDDED
+ /* Lock for GPIO register access. */
+@@ -299,8 +301,13 @@ struct ssb_bus {
+
+ /* The initialization-invariants. */
+ struct ssb_init_invariants {
++ /* Versioning information about the PCB. */
+ struct ssb_boardinfo boardinfo;
++ /* The SPROM information. That's either stored in an
++ * EEPROM or NVRAM on the board. */
+ struct ssb_sprom sprom;
++ /* If the board has a cardbus slot, this is set to true. */
++ bool has_cardbus_slot;
+ };
+ /* Type of function to fetch the invariants. */
+ typedef int (*ssb_invariants_func_t)(struct ssb_bus *bus,
+Index: linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h
+===================================================================
+--- linux-2.6.23.16.orig/include/linux/ssb/ssb_driver_pci.h 2008-02-13 20:27:17.000000000 +0100
++++ linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h 2008-02-19 17:31:47.000000000 +0100
+@@ -51,6 +51,11 @@
+ #define SSB_PCICORE_SBTOPCI1_MASK 0xFC000000
+ #define SSB_PCICORE_SBTOPCI2 0x0108 /* Backplane to PCI translation 2 (sbtopci2) */
+ #define SSB_PCICORE_SBTOPCI2_MASK 0xC0000000
++#define SSB_PCICORE_PCICFG0 0x0400 /* PCI config space 0 (rev >= 8) */
++#define SSB_PCICORE_PCICFG1 0x0500 /* PCI config space 1 (rev >= 8) */
++#define SSB_PCICORE_PCICFG2 0x0600 /* PCI config space 2 (rev >= 8) */
++#define SSB_PCICORE_PCICFG3 0x0700 /* PCI config space 3 (rev >= 8) */
++#define SSB_PCICORE_SPROM(wordoffset) (0x0800 + ((wordoffset) * 2)) /* SPROM shadow area (72 bytes) */
+
+ /* SBtoPCIx */
+ #define SSB_PCICORE_SBTOPCI_MEM 0x00000000
--
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