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ssb: Fix the horrible crash of innocent cardbus cards.
No Animals were harmed in the production of this patch. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10497 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -158,6 +158,9 @@ static int bcm47xx_get_invariants(struct ssb_bus *bus, struct ssb_init_invariant
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bcm47xx_fill_sprom(&iv->sprom);
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if ((s = nvram_get("cardbus")))
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iv->has_cardbus_slot = !!simple_strtoul(s, NULL, 10);
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return 0;
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}
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116
target/linux/brcm47xx/patches-2.6.23/622-ssb-cardbus-fixes.patch
Normal file
116
target/linux/brcm47xx/patches-2.6.23/622-ssb-cardbus-fixes.patch
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@ -0,0 +1,116 @@
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Index: linux-2.6.23.16/drivers/ssb/driver_pcicore.c
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===================================================================
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--- linux-2.6.23.16.orig/drivers/ssb/driver_pcicore.c 2008-02-19 16:37:14.000000000 +0100
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+++ linux-2.6.23.16/drivers/ssb/driver_pcicore.c 2008-02-19 17:25:26.000000000 +0100
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@@ -11,6 +11,7 @@
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#include <linux/ssb/ssb.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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+#include <linux/ssb/ssb_embedded.h>
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#include "ssb_private.h"
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@@ -27,6 +28,18 @@ void pcicore_write32(struct ssb_pcicore
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ssb_write32(pc->dev, offset, value);
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}
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+static inline
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+u16 pcicore_read16(struct ssb_pcicore *pc, u16 offset)
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+{
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+ return ssb_read16(pc->dev, offset);
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+}
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+
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+static inline
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+void pcicore_write16(struct ssb_pcicore *pc, u16 offset, u16 value)
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+{
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+ ssb_write16(pc->dev, offset, value);
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+}
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+
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/**************************************************
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* Code for hostmode operation.
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**************************************************/
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@@ -123,8 +136,10 @@ static u32 get_cfgspace_addr(struct ssb_
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u32 addr = 0;
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u32 tmp;
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- if (unlikely(pc->cardbusmode && dev > 1))
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+ /* We do only have one cardbus device behind the bridge. */
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+ if (pc->cardbusmode && (dev >= 1))
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goto out;
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+
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if (bus == 0) {
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/* Type 0 transaction */
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if (unlikely(dev >= SSB_PCI_SLOT_MAX))
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@@ -324,7 +339,16 @@ static void ssb_pcicore_init_hostmode(st
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pcicore_write32(pc, SSB_PCICORE_ARBCTL, val);
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udelay(1); /* Assertion time demanded by the PCI standard */
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- /*TODO cardbus mode */
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+ if (pc->dev->bus->has_cardbus_slot) {
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+ ssb_dprintk(KERN_INFO PFX "CardBus slot detected\n");
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+ pc->cardbusmode = 1;
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+ /* GPIO 1 resets the bridge */
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+ ssb_gpio_out(pc->dev->bus, 1, 1);
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+ ssb_gpio_outen(pc->dev->bus, 1, 1);
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+ pcicore_write16(pc, SSB_PCICORE_SPROM(0),
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+ pcicore_read16(pc, SSB_PCICORE_SPROM(0))
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+ | 0x0400);
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+ }
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/* 64MB I/O window */
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pcicore_write32(pc, SSB_PCICORE_SBTOPCI0,
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Index: linux-2.6.23.16/drivers/ssb/main.c
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===================================================================
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--- linux-2.6.23.16.orig/drivers/ssb/main.c 2008-02-19 15:50:44.000000000 +0100
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+++ linux-2.6.23.16/drivers/ssb/main.c 2008-02-19 16:38:31.000000000 +0100
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@@ -559,6 +559,7 @@ static int ssb_fetch_invariants(struct s
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goto out;
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memcpy(&bus->boardinfo, &iv.boardinfo, sizeof(iv.boardinfo));
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memcpy(&bus->sprom, &iv.sprom, sizeof(iv.sprom));
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+ bus->has_cardbus_slot = iv.has_cardbus_slot;
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out:
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return err;
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}
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Index: linux-2.6.23.16/include/linux/ssb/ssb.h
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===================================================================
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--- linux-2.6.23.16.orig/include/linux/ssb/ssb.h 2008-02-19 15:50:44.000000000 +0100
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+++ linux-2.6.23.16/include/linux/ssb/ssb.h 2008-02-19 16:38:31.000000000 +0100
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@@ -282,6 +282,8 @@ struct ssb_bus {
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struct ssb_boardinfo boardinfo;
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/* Contents of the SPROM. */
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struct ssb_sprom sprom;
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+ /* If the board has a cardbus slot, this is set to true. */
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+ bool has_cardbus_slot;
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#ifdef CONFIG_SSB_EMBEDDED
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/* Lock for GPIO register access. */
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@@ -299,8 +301,13 @@ struct ssb_bus {
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/* The initialization-invariants. */
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struct ssb_init_invariants {
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+ /* Versioning information about the PCB. */
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struct ssb_boardinfo boardinfo;
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+ /* The SPROM information. That's either stored in an
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+ * EEPROM or NVRAM on the board. */
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struct ssb_sprom sprom;
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+ /* If the board has a cardbus slot, this is set to true. */
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+ bool has_cardbus_slot;
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};
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/* Type of function to fetch the invariants. */
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typedef int (*ssb_invariants_func_t)(struct ssb_bus *bus,
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Index: linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h
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===================================================================
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--- linux-2.6.23.16.orig/include/linux/ssb/ssb_driver_pci.h 2008-02-13 20:27:17.000000000 +0100
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+++ linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h 2008-02-19 17:31:47.000000000 +0100
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@@ -51,6 +51,11 @@
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#define SSB_PCICORE_SBTOPCI1_MASK 0xFC000000
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#define SSB_PCICORE_SBTOPCI2 0x0108 /* Backplane to PCI translation 2 (sbtopci2) */
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#define SSB_PCICORE_SBTOPCI2_MASK 0xC0000000
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+#define SSB_PCICORE_PCICFG0 0x0400 /* PCI config space 0 (rev >= 8) */
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+#define SSB_PCICORE_PCICFG1 0x0500 /* PCI config space 1 (rev >= 8) */
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+#define SSB_PCICORE_PCICFG2 0x0600 /* PCI config space 2 (rev >= 8) */
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+#define SSB_PCICORE_PCICFG3 0x0700 /* PCI config space 3 (rev >= 8) */
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+#define SSB_PCICORE_SPROM(wordoffset) (0x0800 + ((wordoffset) * 2)) /* SPROM shadow area (72 bytes) */
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/* SBtoPCIx */
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#define SSB_PCICORE_SBTOPCI_MEM 0x00000000
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