The patch titled
blackfin arch: fix bug data cannot be put into L1 DATA SRAM bank B
has been added to the -mm tree. Its filename is
blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: blackfin arch: fix bug data cannot be put into L1 DATA SRAM bank B
From: "Wu, Bryan" <bryan.wu@xxxxxxxxxx>
Don't allocate Bank B data sram in l1_data_A_sram_alloc (). Add
l1_data_sram_alloc (), which allocates data sram from either Bank A or Bank B.
Change all the code which call to l1_data_A_sram_alloc () to use
l1_data_sram_alloc () if appropriate. Likewise for l1_data_A_sram_free ().
Signed-off-by: Jie Zhang <jie.zhang@xxxxxxxxxx>
Signed-off-by: Aubrey Li <aubrey.li@xxxxxxxxxx>
Signed-off-by: Bryan Wu <bryan.wu@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/blackfin/kernel/bfin_ksyms.c | 2
arch/blackfin/kernel/module.c | 8 +--
arch/blackfin/kernel/setup.c | 35 +++++++++-----
arch/blackfin/mm/blackfin_sram.c | 64 ++++++++++++++-------------
include/asm-blackfin/bfin-global.h | 3 -
5 files changed, 65 insertions(+), 47 deletions(-)
diff -puN arch/blackfin/kernel/bfin_ksyms.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data arch/blackfin/kernel/bfin_ksyms.c
--- a/arch/blackfin/kernel/bfin_ksyms.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data
+++ a/arch/blackfin/kernel/bfin_ksyms.c
@@ -115,3 +115,5 @@ EXPORT_SYMBOL(_ebss_l1);
EXPORT_SYMBOL(_stext_l1);
EXPORT_SYMBOL(_etext_l1);
EXPORT_SYMBOL(_sdata_l1);
+EXPORT_SYMBOL(_ebss_b_l1);
+EXPORT_SYMBOL(_sdata_b_l1);
diff -puN arch/blackfin/kernel/module.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data arch/blackfin/kernel/module.c
--- a/arch/blackfin/kernel/module.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data
+++ a/arch/blackfin/kernel/module.c
@@ -183,7 +183,7 @@ module_frob_arch_sections(Elf_Ehdr * hdr
((strcmp(".data", secstrings + s->sh_name)==0) &&
(hdr->e_flags & FLG_DATA_IN_L1) && (s->sh_size > 0))) {
mod->arch.data_a_l1 = s;
- dest = l1_data_A_sram_alloc(s->sh_size);
+ dest = l1_data_sram_alloc(s->sh_size);
if (dest == NULL) {
printk(KERN_ERR
"module %s: L1 data memory allocation failed\n",
@@ -198,7 +198,7 @@ module_frob_arch_sections(Elf_Ehdr * hdr
((strcmp(".bss", secstrings + s->sh_name)==0) &&
(hdr->e_flags & FLG_DATA_IN_L1) && (s->sh_size > 0))) {
mod->arch.bss_a_l1 = s;
- dest = l1_data_A_sram_alloc(s->sh_size);
+ dest = l1_data_sram_alloc(s->sh_size);
if (dest == NULL) {
printk(KERN_ERR
"module %s: L1 data memory allocation failed\n",
@@ -419,9 +419,9 @@ void module_arch_cleanup(struct module *
if ((mod->arch.text_l1) && (mod->arch.text_l1->sh_addr))
l1_inst_sram_free((void*)mod->arch.text_l1->sh_addr);
if ((mod->arch.data_a_l1) && (mod->arch.data_a_l1->sh_addr))
- l1_data_A_sram_free((void*)mod->arch.data_a_l1->sh_addr);
+ l1_data_sram_free((void*)mod->arch.data_a_l1->sh_addr);
if ((mod->arch.bss_a_l1) && (mod->arch.bss_a_l1->sh_addr))
- l1_data_A_sram_free((void*)mod->arch.bss_a_l1->sh_addr);
+ l1_data_sram_free((void*)mod->arch.bss_a_l1->sh_addr);
if ((mod->arch.data_b_l1) && (mod->arch.data_b_l1->sh_addr))
l1_data_B_sram_free((void*)mod->arch.data_b_l1->sh_addr);
if ((mod->arch.bss_b_l1) && (mod->arch.bss_b_l1->sh_addr))
diff -puN arch/blackfin/kernel/setup.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data arch/blackfin/kernel/setup.c
--- a/arch/blackfin/kernel/setup.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data
+++ a/arch/blackfin/kernel/setup.c
@@ -90,25 +90,34 @@ void __init bf53x_cache_init(void)
void bf53x_relocate_l1_mem(void)
{
- unsigned long l1_length;
-
- l1_length = _etext_l1 - _stext_l1;
- if (l1_length > L1_CODE_LENGTH)
- l1_length = L1_CODE_LENGTH;
+ unsigned long l1_code_length;
+ unsigned long l1_data_a_length;
+ unsigned long l1_data_b_length;
+
+ l1_code_length = _etext_l1 - _stext_l1;
+ if (l1_code_length > L1_CODE_LENGTH)
+ l1_code_length = L1_CODE_LENGTH;
/* cannot complain as printk is not available as yet.
* But we can continue booting and complain later!
*/
/* Copy _stext_l1 to _etext_l1 to L1 instruction SRAM */
- dma_memcpy(_stext_l1, _l1_lma_start, l1_length);
-
- l1_length = _ebss_l1 - _sdata_l1;
- if (l1_length > L1_DATA_A_LENGTH)
- l1_length = L1_DATA_A_LENGTH;
+ dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
- /* Copy _sdata_l1 to _ebss_l1 to L1 instruction SRAM */
- dma_memcpy(_sdata_l1, _l1_lma_start + (_etext_l1 - _stext_l1),
- l1_length);
+ l1_data_a_length = _ebss_l1 - _sdata_l1;
+ if (l1_data_a_length > L1_DATA_A_LENGTH)
+ l1_data_a_length = L1_DATA_A_LENGTH;
+
+ /* Copy _sdata_l1 to _ebss_l1 to L1 data bank A SRAM */
+ dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
+
+ l1_data_b_length = _ebss_b_l1 - _sdata_b_l1;
+ if (l1_data_b_length > L1_DATA_B_LENGTH)
+ l1_data_b_length = L1_DATA_B_LENGTH;
+
+ /* Copy _sdata_b_l1 to _ebss_b_l1 to L1 data bank B SRAM */
+ dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
+ l1_data_a_length, l1_data_b_length);
}
diff -puN arch/blackfin/mm/blackfin_sram.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data arch/blackfin/mm/blackfin_sram.c
--- a/arch/blackfin/mm/blackfin_sram.c~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data
+++ a/arch/blackfin/mm/blackfin_sram.c
@@ -283,12 +283,6 @@ void *l1_data_A_sram_alloc(size_t size)
addr = _l1_sram_alloc(size, l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram));
#endif
-#if L1_DATA_B_LENGTH != 0
- if (!addr)
- addr = _l1_sram_alloc(size, l1_data_B_sram,
- ARRAY_SIZE(l1_data_B_sram));
-#endif
-
/* add mutex operation */
spin_unlock_irqrestore(&l1_data_sram_lock, flags);
@@ -307,17 +301,11 @@ int l1_data_A_sram_free(const void *addr
/* add mutex operation */
spin_lock_irqsave(&l1_data_sram_lock, flags);
-#if L1_DATA_B_LENGTH != 0
- if (L1_DATA_B_START == ((unsigned long)addr & ~0x0000FFFF))
- ret = _l1_sram_free(addr,
- l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram));
- else
-#endif
#if L1_DATA_A_LENGTH != 0
- ret = _l1_sram_free(addr,
- l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram));
+ ret = _l1_sram_free(addr,
+ l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram));
#else
- ret = -1;
+ ret = -1;
#endif
/* add mutex operation */
@@ -327,20 +315,6 @@ int l1_data_A_sram_free(const void *addr
}
EXPORT_SYMBOL(l1_data_A_sram_free);
-void *l1_data_sram_zalloc(size_t size)
-{
- void *addr = l1_data_A_sram_alloc(size);
- memset(addr, 0x00, size);
- return addr;
-}
-EXPORT_SYMBOL(l1_data_sram_zalloc);
-
-int l1_data_sram_free(const void *addr)
-{
- return l1_data_A_sram_free(addr);
-}
-EXPORT_SYMBOL(l1_data_sram_free);
-
void *l1_data_B_sram_alloc(size_t size)
{
#if L1_DATA_B_LENGTH != 0
@@ -386,6 +360,38 @@ int l1_data_B_sram_free(const void *addr
}
EXPORT_SYMBOL(l1_data_B_sram_free);
+void *l1_data_sram_alloc(size_t size)
+{
+ void *addr = l1_data_A_sram_alloc(size);
+
+ if (!addr)
+ addr = l1_data_B_sram_alloc(size);
+
+ return addr;
+}
+EXPORT_SYMBOL(l1_data_sram_alloc);
+
+void *l1_data_sram_zalloc(size_t size)
+{
+ void *addr = l1_data_sram_alloc(size);
+
+ if (addr)
+ memset(addr, 0x00, size);
+
+ return addr;
+}
+EXPORT_SYMBOL(l1_data_sram_zalloc);
+
+int l1_data_sram_free(const void *addr)
+{
+ int ret;
+ ret = l1_data_A_sram_free(addr);
+ if (ret == -1)
+ ret = l1_data_B_sram_free(addr);
+ return ret;
+}
+EXPORT_SYMBOL(l1_data_sram_free);
+
void *l1_inst_sram_alloc(size_t size)
{
#if L1_DATA_A_LENGTH != 0
diff -puN include/asm-blackfin/bfin-global.h~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data include/asm-blackfin/bfin-global.h
--- a/include/asm-blackfin/bfin-global.h~blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data
+++ a/include/asm-blackfin/bfin-global.h
@@ -70,6 +70,7 @@ extern void bfin_gpio_interrupt_setup(in
extern void *l1_data_A_sram_alloc(size_t);
extern void *l1_data_B_sram_alloc(size_t);
extern void *l1_inst_sram_alloc(size_t);
+extern void *l1_data_sram_alloc(size_t);
extern void *l1_data_sram_zalloc(size_t);
extern int l1_data_A_sram_free(const void*);
extern int l1_data_B_sram_free(const void*);
@@ -108,7 +109,7 @@ extern char _start;
extern unsigned long _ramstart, _ramend, _rambase;
extern unsigned long memory_start, memory_end, physical_mem_end;
extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[],
- _ebss_l1[], _l1_lma_start[];
+ _ebss_l1[], _l1_lma_start[], _sdata_b_l1[], _ebss_b_l1[];
#ifdef CONFIG_MTD_UCLINUX
extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
_
Patches currently in -mm which might be from bryan.wu@xxxxxxxxxx are
usb-gadget-rndis-fix-struct-rndis_packet_msg_type.patch
blackfin-Documentation.patch
blackfin-arch.patch
blackfin-arch-balance-parenthesis-in-macros.patch
blackfin-arch-2.6.21-rc4-mm1-update.patch
blackfin-arch-fix-struct-dmasg-packing-bug.patch
blackfin-arch-cleanup-cache-header-file.patch
blackfin-arch-fix-reboot-kernel-mounting-spi-flash-print-error-bug.patch
blackfin-arch-fix-compiling-error-in-flat-c-file.patch
blackfin-arch-power-management-replace-firmware-disk-mode.patch
blackfin-arch-add-kdebug-header-file.patch
blackfin-arch-fix-bug-bf561-rev-id-are-8-bit.patch
blackfin-arch-fix-bug-prevent-warning-in-case-bf531-is-target.patch
blackfin-arch-fix-stamp537-isp1716-irq-setting-bug.patch
blackfin-arch-fix-bug-interrupt-setup-problem-request_irq.patch
blackfin-arch-pnav-and-bluetechnix-cm-bf537-use-the-mac.patch
blackfin-arch-always-include-linux-kallsysms-header-file.patch
blackfin-arch-sync-with-uclibc-no-functional-changes.patch
blackfin-arch-using-asm-generic-pgtable-header-file-by.patch
blackfin-arch-add-missing-__clear_user-function-to.patch
blackfin-arch-use-boot_command_line-instead-of.patch
blackfin-arch-fix-some-coding-style-in-include.patch
blackfin-arch-add-scm_timestampns-and-siocgstampns-to.patch
blackfin-arch-add-missing-blackfin-support-in-lib.patch
blackfin-arch-fix-bug-data-cannot-be-put-into-l1-data.patch
blackfin-arch-source-kernel-preemption-option.patch
blackfin-arch-workaround-bf561-anomaly-05000266.patch
blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update.patch
blackfin-arch-fix-bug-asserting-gpio-requested-doesnt-make-sense-with-gpio-whole-port-accesses.patch
blackfin-arch-04-and-05-silicon-doesnt-exist-for-bf534-bf536-adn-bf537-so-dont-let-people-select-the-option.patch
driver_bfin_serial_core.patch
driver_bfin_serial_core-update.patch
blackfin-on-chip-ethernet-mac-controller-driver.patch
blackfin-on-chip-ethernet-mac-controller-driver-update.patch
blackfin-patch-add-blackfin-support-in-smc91x.patch
blackfin-on-chip-rtc-controller-driver.patch
blackfin-on-chip-rtc-controller-driver-fix-rtc_update_irq-augument.patch
blackfin-blackfin-on-chip-spi-controller-driver.patch
blackfin-blackfin-on-chip-spi-controller-driver-cleanup-and-coding-style-fixing.patch
blackfin-blackfin-on-chip-spi-controller-driver-fix-reboot-kernel-mounting-spi-flash-print-error-bug.patch
move-die-notifier-handling-to-common-code-fix.patch
revoke-core-code-revoke-no-revoke-for-nommu.patch
revoke-core-code-generic_file_revoke-stub-for-nommu.patch
blackfin-blackfin-utrace-patch.patch
utrace-nommu-fixup-support-utrace.patch
vdso-print-fatal-signals-fix-compiling-error-bug-in.patch
nommu-fix-bug-ip_conntrack-does-not-work-on-nommu.patch
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