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ssb: Fix the horrible crash of innocent cardbus cards.

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No Animals were harmed in the production of this patch.

SVN-Revision: 10497
v19.07.3_mercusys_ac12_duma
Michael Büsch 17 years ago
parent faa14263f5
commit e7e5ebd0c2
2 changed files with 119 additions and 0 deletions
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3
target/linux/brcm47xx/files/arch/mips/bcm947xx/setup.c
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@ -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;
}

116
target/linux/brcm47xx/patches-2.6.23/622-ssb-cardbus-fixes.patch
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@ -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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