kernel: backport ssb fix for WRT350N v1 (BCM4705) reboots

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45865 3c298f89-4303-0410-b956-a3cf2f4a3e73

6 files changed, 29 insertions, 27 deletions

diff --git a/target/linux/brcm47xx/patches-4.0/159-cpu_fixes.patch b/target/linux/brcm47xx/patches-4.0/159-cpu_fixes.patch
index 214534577e..38c64318f1 100644
--- a/target/linux/brcm47xx/patches-4.0/159-cpu_fixes.patch
+++ b/target/linux/brcm47xx/patches-4.0/159-cpu_fixes.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/include/asm/r4kcache.h
 +++ b/arch/mips/include/asm/r4kcache.h
-@@ -23,6 +23,20 @@
+@@ -25,6 +25,20 @@
  extern void (*r4k_blast_dcache)(void);
  extern void (*r4k_blast_icache)(void);
  
@@ -21,7 +21,7 @@
  /*
   * This macro return a properly sign-extended address suitable as base address
   * for indexed cache operations.  Two issues here:
-@@ -96,6 +110,7 @@ static inline void flush_icache_line_ind
+@@ -98,6 +112,7 @@ static inline void flush_icache_line_ind
  static inline void flush_dcache_line_indexed(unsigned long addr)
  {
  	__dflush_prologue
@@ -29,7 +29,7 @@
  	cache_op(Index_Writeback_Inv_D, addr);
  	__dflush_epilogue
  }
-@@ -123,6 +138,7 @@ static inline void flush_icache_line(uns
+@@ -125,6 +140,7 @@ static inline void flush_icache_line(uns
  static inline void flush_dcache_line(unsigned long addr)
  {
  	__dflush_prologue
@@ -37,7 +37,7 @@
  	cache_op(Hit_Writeback_Inv_D, addr);
  	__dflush_epilogue
  }
-@@ -130,6 +146,7 @@ static inline void flush_dcache_line(uns
+@@ -132,6 +148,7 @@ static inline void flush_dcache_line(uns
  static inline void invalidate_dcache_line(unsigned long addr)
  {
  	__dflush_prologue
@@ -45,7 +45,7 @@
  	cache_op(Hit_Invalidate_D, addr);
  	__dflush_epilogue
  }
-@@ -185,6 +202,7 @@ static inline void protected_flush_icach
+@@ -187,6 +204,7 @@ static inline void protected_flush_icach
  #ifdef CONFIG_EVA
  		protected_cachee_op(Hit_Invalidate_I, addr);
  #else
@@ -53,7 +53,7 @@
  		protected_cache_op(Hit_Invalidate_I, addr);
  #endif
  		break;
-@@ -199,6 +217,7 @@ static inline void protected_flush_icach
+@@ -201,6 +219,7 @@ static inline void protected_flush_icach
   */
  static inline void protected_writeback_dcache_line(unsigned long addr)
  {
@@ -61,7 +61,7 @@
  #ifdef CONFIG_EVA
  	protected_cachee_op(Hit_Writeback_Inv_D, addr);
  #else
-@@ -553,8 +572,51 @@ static inline void invalidate_tcache_pag
+@@ -554,8 +573,51 @@ static inline void invalidate_tcache_pag
  		: "r" (base),						\
  		  "i" (op));
  
@@ -114,7 +114,7 @@
  static inline void extra##blast_##pfx##cache##lsize(void)		\
  {									\
  	unsigned long start = INDEX_BASE;				\
-@@ -566,6 +628,7 @@ static inline void extra##blast_##pfx##c
+@@ -567,6 +629,7 @@ static inline void extra##blast_##pfx##c
  									\
  	__##pfx##flush_prologue						\
  									\
@@ -122,7 +122,7 @@
  	for (ws = 0; ws < ws_end; ws += ws_inc)				\
  		for (addr = start; addr < end; addr += lsize * 32)	\
  			cache##lsize##_unroll32(addr|ws, indexop);	\
-@@ -580,6 +643,7 @@ static inline void extra##blast_##pfx##c
+@@ -581,6 +644,7 @@ static inline void extra##blast_##pfx##c
  									\
  	__##pfx##flush_prologue						\
  									\
@@ -130,7 +130,7 @@
  	do {								\
  		cache##lsize##_unroll32(start, hitop);			\
  		start += lsize * 32;					\
-@@ -598,6 +662,8 @@ static inline void extra##blast_##pfx##c
+@@ -599,6 +663,8 @@ static inline void extra##blast_##pfx##c
  			       current_cpu_data.desc.waybit;		\
  	unsigned long ws, addr;						\
  									\
@@ -139,7 +139,7 @@
  	__##pfx##flush_prologue						\
  									\
  	for (ws = 0; ws < ws_end; ws += ws_inc)				\
-@@ -607,26 +673,26 @@ static inline void extra##blast_##pfx##c
+@@ -608,26 +674,26 @@ static inline void extra##blast_##pfx##c
  	__##pfx##flush_epilogue						\
  }
  
@@ -186,7 +186,7 @@
  
  #define __BUILD_BLAST_USER_CACHE(pfx, desc, indexop, hitop, lsize) \
  static inline void blast_##pfx##cache##lsize##_user_page(unsigned long page) \
-@@ -655,17 +721,19 @@ __BUILD_BLAST_USER_CACHE(d, dcache, Inde
+@@ -656,17 +722,19 @@ __BUILD_BLAST_USER_CACHE(d, dcache, Inde
  __BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
  
  /* build blast_xxx_range, protected_blast_xxx_range */
@@ -207,7 +207,7 @@
  		prot##cache_op(hitop, addr);				\
  		if (addr == aend)					\
  			break;						\
-@@ -677,8 +745,8 @@ static inline void prot##extra##blast_##
+@@ -678,8 +746,8 @@ static inline void prot##extra##blast_##
  
  #ifndef CONFIG_EVA
  
@@ -218,7 +218,7 @@
  
  #else
  
-@@ -715,14 +783,14 @@ __BUILD_PROT_BLAST_CACHE_RANGE(d, dcache
+@@ -716,14 +784,14 @@ __BUILD_PROT_BLAST_CACHE_RANGE(d, dcache
  __BUILD_PROT_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I)
  
  #endif
@@ -369,7 +369,7 @@
  	/*
 --- a/arch/mips/mm/tlbex.c
 +++ b/arch/mips/mm/tlbex.c
-@@ -1286,6 +1286,9 @@ static void build_r4000_tlb_refill_handl
+@@ -1269,6 +1269,9 @@ static void build_r4000_tlb_refill_handl
  			/* No need for uasm_i_nop */
  		}
  
@@ -379,7 +379,7 @@
  #ifdef CONFIG_64BIT
  		build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */
  #else
-@@ -1848,6 +1851,9 @@ build_r4000_tlbchange_handler_head(u32 *
+@@ -1831,6 +1834,9 @@ build_r4000_tlbchange_handler_head(u32 *
  {
  	struct work_registers wr = build_get_work_registers(p);
  
diff --git a/target/linux/brcm47xx/patches-4.0/280-activate_ssb_support_in_usb.patch b/target/linux/brcm47xx/patches-4.0/280-activate_ssb_support_in_usb.patch
index c44131f2fe..c4082ab464 100644
--- a/target/linux/brcm47xx/patches-4.0/280-activate_ssb_support_in_usb.patch
+++ b/target/linux/brcm47xx/patches-4.0/280-activate_ssb_support_in_usb.patch
@@ -15,7 +15,7 @@ This prevents the options from being delete with make kernel_oldconfig.
  	  the memory. This only works with the Broadcom SoCs from the
 --- a/drivers/ssb/Kconfig
 +++ b/drivers/ssb/Kconfig
-@@ -146,6 +146,7 @@ config SSB_SFLASH
+@@ -147,6 +147,7 @@ config SSB_SFLASH
  config SSB_EMBEDDED
  	bool
  	depends on SSB_DRIVER_MIPS && SSB_PCICORE_HOSTMODE
diff --git a/target/linux/brcm47xx/patches-4.0/300-fork_cacheflush.patch b/target/linux/brcm47xx/patches-4.0/300-fork_cacheflush.patch
index 686fb1b945..0f79debc6b 100644
--- a/target/linux/brcm47xx/patches-4.0/300-fork_cacheflush.patch
+++ b/target/linux/brcm47xx/patches-4.0/300-fork_cacheflush.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/include/asm/cacheflush.h
 +++ b/arch/mips/include/asm/cacheflush.h
-@@ -32,7 +32,7 @@
+@@ -46,7 +46,7 @@
  extern void (*flush_cache_all)(void);
  extern void (*__flush_cache_all)(void);
  extern void (*flush_cache_mm)(struct mm_struct *mm);
diff --git a/target/linux/brcm47xx/patches-4.0/976-ssb_increase_pci_delay.patch b/target/linux/brcm47xx/patches-4.0/976-ssb_increase_pci_delay.patch
index bf932729e9..90bda515eb 100644
--- a/target/linux/brcm47xx/patches-4.0/976-ssb_increase_pci_delay.patch
+++ b/target/linux/brcm47xx/patches-4.0/976-ssb_increase_pci_delay.patch
@@ -1,6 +1,6 @@
 --- a/drivers/ssb/driver_pcicore.c
 +++ b/drivers/ssb/driver_pcicore.c
-@@ -388,7 +388,7 @@ static void ssb_pcicore_init_hostmode(st
+@@ -389,7 +389,7 @@ static void ssb_pcicore_init_hostmode(st
  	set_io_port_base(ssb_pcicore_controller.io_map_base);
  	/* Give some time to the PCI controller to configure itself with the new
  	 * values. Not waiting at this point causes crashes of the machine. */
diff --git a/target/linux/generic/patches-3.18/020-ssb_update.patch b/target/linux/generic/patches-3.18/020-ssb_update.patch
index 7afba07763..f94d160fc6 100644
--- a/target/linux/generic/patches-3.18/020-ssb_update.patch
+++ b/target/linux/generic/patches-3.18/020-ssb_update.patch
@@ -78,18 +78,19 @@
  }
 --- a/drivers/ssb/driver_pcicore.c
 +++ b/drivers/ssb/driver_pcicore.c
-@@ -357,6 +357,15 @@ static void ssb_pcicore_init_hostmode(st
+@@ -357,6 +357,16 @@ static void ssb_pcicore_init_hostmode(st
  	pcicore_write32(pc, SSB_PCICORE_SBTOPCI2,
  			SSB_PCICORE_SBTOPCI_MEM | SSB_PCI_DMA);
  
 +	/*
 +	 * Accessing PCI config without a proper delay after devices reset (not
-+	 * GPIO reset) was causing reboots on WRT300N v1.0.
++	 * GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704).
 +	 * Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it
 +	 * completely. Flushing all writes was also tested but with no luck.
++	 * The same problem was reported for WRT350N v1 (BCM4705), so we just
++	 * sleep here unconditionally.
 +	 */
-+	if (pc->dev->bus->chip_id == 0x4704)
-+		usleep_range(1000, 2000);
++	usleep_range(1000, 2000);
 +
  	/* Enable PCI bridge BAR0 prefetch and burst */
  	val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
diff --git a/target/linux/generic/patches-4.0/020-ssb_update.patch b/target/linux/generic/patches-4.0/020-ssb_update.patch
index 946cb3b106..d7e15aea42 100644
--- a/target/linux/generic/patches-4.0/020-ssb_update.patch
+++ b/target/linux/generic/patches-4.0/020-ssb_update.patch
@@ -1,17 +1,18 @@
 --- a/drivers/ssb/driver_pcicore.c
 +++ b/drivers/ssb/driver_pcicore.c
-@@ -357,6 +357,15 @@ static void ssb_pcicore_init_hostmode(st
+@@ -357,6 +357,16 @@ static void ssb_pcicore_init_hostmode(st
  	pcicore_write32(pc, SSB_PCICORE_SBTOPCI2,
  			SSB_PCICORE_SBTOPCI_MEM | SSB_PCI_DMA);
  
 +	/*
 +	 * Accessing PCI config without a proper delay after devices reset (not
-+	 * GPIO reset) was causing reboots on WRT300N v1.0.
++	 * GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704).
 +	 * Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it
 +	 * completely. Flushing all writes was also tested but with no luck.
++	 * The same problem was reported for WRT350N v1 (BCM4705), so we just
++	 * sleep here unconditionally.
 +	 */
-+	if (pc->dev->bus->chip_id == 0x4704)
-+		usleep_range(1000, 2000);
++	usleep_range(1000, 2000);
 +
  	/* Enable PCI bridge BAR0 prefetch and burst */
  	val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;