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-rw-r--r--target/linux/brcm63xx/patches-2.6.39/500-ssb-add-callback-for-sprom.patch143
1 files changed, 143 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-2.6.39/500-ssb-add-callback-for-sprom.patch b/target/linux/brcm63xx/patches-2.6.39/500-ssb-add-callback-for-sprom.patch
new file mode 100644
index 0000000000..349e5f5007
--- /dev/null
+++ b/target/linux/brcm63xx/patches-2.6.39/500-ssb-add-callback-for-sprom.patch
@@ -0,0 +1,143 @@
+--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
++++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
+@@ -2128,6 +2128,17 @@ static struct ssb_sprom bcm63xx_sprom =
+ .boardflags_lo = 0x2848,
+ .boardflags_hi = 0x0000,
+ };
++
++int bcm63xx_get_fallback_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
++{
++ if (bus->bustype == SSB_BUSTYPE_PCI) {
++ memcpy(out, &bcm63xx_sprom, sizeof(struct ssb_sprom));
++ return 0;
++ } else {
++ printk(KERN_ERR PFX "unable to fill SPROM for given bustype.\n");
++ return -EINVAL;
++ }
++}
+ #endif
+
+ /*
+@@ -2328,8 +2339,9 @@ void __init board_prom_init(void)
+ if (!board_get_mac_address(bcm63xx_sprom.il0mac)) {
+ memcpy(bcm63xx_sprom.et0mac, bcm63xx_sprom.il0mac, ETH_ALEN);
+ memcpy(bcm63xx_sprom.et1mac, bcm63xx_sprom.il0mac, ETH_ALEN);
+- if (ssb_arch_set_fallback_sprom(&bcm63xx_sprom) < 0)
+- printk(KERN_ERR "failed to register fallback SPROM\n");
++ if (ssb_arch_register_fallback_sprom(
++ &bcm63xx_get_fallback_sprom) < 0)
++ printk(KERN_ERR PFX "failed to register fallback SPROM\n");
+ }
+ #endif
+ }
+--- a/drivers/ssb/pci.c
++++ b/drivers/ssb/pci.c
+@@ -662,7 +662,6 @@ static int sprom_extract(struct ssb_bus
+ static int ssb_pci_sprom_get(struct ssb_bus *bus,
+ struct ssb_sprom *sprom)
+ {
+- const struct ssb_sprom *fallback;
+ int err;
+ u16 *buf;
+
+@@ -707,10 +706,14 @@ static int ssb_pci_sprom_get(struct ssb_
+ if (err) {
+ /* All CRC attempts failed.
+ * Maybe there is no SPROM on the device?
+- * If we have a fallback, use that. */
+- fallback = ssb_get_fallback_sprom();
+- if (fallback) {
+- memcpy(sprom, fallback, sizeof(*sprom));
++ * Now we ask the arch code if there is some sprom
++ * avaliable for this device in some other storage */
++ err = ssb_fill_sprom_with_fallback(bus, sprom);
++ if (err) {
++ ssb_printk(KERN_WARNING PFX "WARNING: Using"
++ " fallback SPROM failed (err %d)\n",
++ err);
++ } else {
+ err = 0;
+ goto out_free;
+ }
+--- a/drivers/ssb/sprom.c
++++ b/drivers/ssb/sprom.c
+@@ -17,7 +17,7 @@
+ #include <linux/slab.h>
+
+
+-static const struct ssb_sprom *fallback_sprom;
++static int(*get_fallback_sprom)(struct ssb_bus *dev, struct ssb_sprom *out);
+
+
+ static int sprom2hex(const u16 *sprom, char *buf, size_t buf_len,
+@@ -145,13 +145,14 @@ out:
+ }
+
+ /**
+- * ssb_arch_set_fallback_sprom - Set a fallback SPROM for use if no SPROM is found.
++ * ssb_arch_register_fallback_sprom - Registers a method providing a fallback
++ * SPROM if no SPROM is found.
+ *
+- * @sprom: The SPROM data structure to register.
++ * @sprom_callback: The callbcak function.
+ *
+- * With this function the architecture implementation may register a fallback
+- * SPROM data structure. The fallback is only used for PCI based SSB devices,
+- * where no valid SPROM can be found in the shadow registers.
++ * With this function the architecture implementation may register a callback
++ * handler which wills the SPROM data structure. The fallback is only used for
++ * PCI based SSB devices, where no valid SPROM can be found in the shadow registers.
+ *
+ * This function is useful for weird architectures that have a half-assed SSB device
+ * hardwired to their PCI bus.
+@@ -163,18 +164,21 @@ out:
+ *
+ * This function is available for architecture code, only. So it is not exported.
+ */
+-int ssb_arch_set_fallback_sprom(const struct ssb_sprom *sprom)
++int ssb_arch_register_fallback_sprom(int (*sprom_callback)(struct ssb_bus *bus, struct ssb_sprom *out))
+ {
+- if (fallback_sprom)
++ if (get_fallback_sprom)
+ return -EEXIST;
+- fallback_sprom = sprom;
++ get_fallback_sprom = sprom_callback;
+
+ return 0;
+ }
+
+-const struct ssb_sprom *ssb_get_fallback_sprom(void)
++int ssb_fill_sprom_with_fallback(struct ssb_bus *bus, struct ssb_sprom *out)
+ {
+- return fallback_sprom;
++ if (!get_fallback_sprom)
++ return -ENOENT;
++
++ return get_fallback_sprom(bus, out);
+ }
+
+ /* http://bcm-v4.sipsolutions.net/802.11/IsSpromAvailable */
+--- a/drivers/ssb/ssb_private.h
++++ b/drivers/ssb/ssb_private.h
+@@ -171,7 +171,7 @@ ssize_t ssb_attr_sprom_store(struct ssb_
+ const char *buf, size_t count,
+ int (*sprom_check_crc)(const u16 *sprom, size_t size),
+ int (*sprom_write)(struct ssb_bus *bus, const u16 *sprom));
+-extern const struct ssb_sprom *ssb_get_fallback_sprom(void);
++extern int ssb_fill_sprom_with_fallback(struct ssb_bus *bus, struct ssb_sprom *out);
+
+
+ /* core.c */
+--- a/include/linux/ssb/ssb.h
++++ b/include/linux/ssb/ssb.h
+@@ -404,7 +404,9 @@ extern bool ssb_is_sprom_available(struc
+
+ /* Set a fallback SPROM.
+ * See kdoc at the function definition for complete documentation. */
+-extern int ssb_arch_set_fallback_sprom(const struct ssb_sprom *sprom);
++extern int ssb_arch_register_fallback_sprom(
++ int (*sprom_callback)(struct ssb_bus *bus,
++ struct ssb_sprom *out));
+
+ /* Suspend a SSB bus.
+ * Call this from the parent bus suspend routine. */