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

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

SVN-Revision: 45865
This commit is contained in:
Rafał Miłecki 2015-06-01 06:11:26 +00:00
parent c0c8d3a95f
commit 6bc9e00e94
6 changed files with 29 additions and 27 deletions
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32
target/linux/brcm47xx/patches-4.0/159-cpu_fixes.patch
View file

@ -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);

2
target/linux/brcm47xx/patches-4.0/280-activate_ssb_support_in_usb.patch
View file

@ -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

2
target/linux/brcm47xx/patches-4.0/300-fork_cacheflush.patch
View file

@ -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);

2
target/linux/brcm47xx/patches-4.0/976-ssb_increase_pci_delay.patch
View file

@ -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. */

9
target/linux/generic/patches-3.18/020-ssb_update.patch
View file

@ -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;

9
target/linux/generic/patches-4.0/020-ssb_update.patch
View file

@ -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;