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-rw-r--r--arch/arm/include/asm/assembler.h2
-rw-r--r--arch/arm/include/asm/kgdb.h5
-rw-r--r--arch/arm/kernel/kgdb.c2
-rw-r--r--arch/arm/lib/findbit.S6
-rw-r--r--arch/arm/mach-cns3xxx/include/mach/debug-macro.S2
-rw-r--r--arch/arm/mach-cns3xxx/pcie.c2
-rw-r--r--arch/arm/mm/fault-armv.c28
-rw-r--r--arch/arm/plat-omap/dma.c50
-rw-r--r--arch/arm/plat-omap/include/plat/dma.h4
9 files changed, 85 insertions, 16 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 6e8f05c8a1c8..d7575554e407 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -215,7 +215,7 @@
@ Slightly optimised to avoid incrementing the pointer twice
usraccoff \instr, \reg, \ptr, \inc, 0, \cond, \abort
.if \rept == 2
- usraccoff \instr, \reg, \ptr, \inc, 4, \cond, \abort
+ usraccoff \instr, \reg, \ptr, \inc, \inc, \cond, \abort
.endif
add\cond \ptr, #\rept * \inc
diff --git a/arch/arm/include/asm/kgdb.h b/arch/arm/include/asm/kgdb.h
index 08265993227f..48066ce9ea34 100644
--- a/arch/arm/include/asm/kgdb.h
+++ b/arch/arm/include/asm/kgdb.h
@@ -70,7 +70,8 @@ extern int kgdb_fault_expected;
#define _GP_REGS 16
#define _FP_REGS 8
#define _EXTRA_REGS 2
-#define DBG_MAX_REG_NUM (_GP_REGS + (_FP_REGS * 3) + _EXTRA_REGS)
+#define GDB_MAX_REGS (_GP_REGS + (_FP_REGS * 3) + _EXTRA_REGS)
+#define DBG_MAX_REG_NUM (_GP_REGS + _FP_REGS + _EXTRA_REGS)
#define KGDB_MAX_NO_CPUS 1
#define BUFMAX 400
@@ -93,7 +94,7 @@ extern int kgdb_fault_expected;
#define _SPT 13
#define _LR 14
#define _PC 15
-#define _CPSR (DBG_MAX_REG_NUM - 1)
+#define _CPSR (GDB_MAX_REGS - 1)
/*
* So that we can denote the end of a frame for tracing,
diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
index d6e8b4d2e60d..778c2f7024ff 100644
--- a/arch/arm/kernel/kgdb.c
+++ b/arch/arm/kernel/kgdb.c
@@ -79,7 +79,7 @@ sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *task)
return;
/* Initialize to zero */
- for (regno = 0; regno < DBG_MAX_REG_NUM; regno++)
+ for (regno = 0; regno < GDB_MAX_REGS; regno++)
gdb_regs[regno] = 0;
/* Otherwise, we have only some registers from switch_to() */
diff --git a/arch/arm/lib/findbit.S b/arch/arm/lib/findbit.S
index 1e4cbd4e7be9..64f6bc1a9132 100644
--- a/arch/arm/lib/findbit.S
+++ b/arch/arm/lib/findbit.S
@@ -174,8 +174,8 @@ ENDPROC(_find_next_bit_be)
*/
.L_found:
#if __LINUX_ARM_ARCH__ >= 5
- rsb r1, r3, #0
- and r3, r3, r1
+ rsb r0, r3, #0
+ and r3, r3, r0
clz r3, r3
rsb r3, r3, #31
add r0, r2, r3
@@ -190,5 +190,7 @@ ENDPROC(_find_next_bit_be)
addeq r2, r2, #1
mov r0, r2
#endif
+ cmp r1, r0 @ Clamp to maxbit
+ movlo r0, r1
mov pc, lr
diff --git a/arch/arm/mach-cns3xxx/include/mach/debug-macro.S b/arch/arm/mach-cns3xxx/include/mach/debug-macro.S
index d16ce7eb00e9..9b50442d4b9b 100644
--- a/arch/arm/mach-cns3xxx/include/mach/debug-macro.S
+++ b/arch/arm/mach-cns3xxx/include/mach/debug-macro.S
@@ -10,7 +10,7 @@
* published by the Free Software Foundation.
*/
- .macro addruart,rx
+ .macro addruart,rx,rtmp
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #0x10000000
diff --git a/arch/arm/mach-cns3xxx/pcie.c b/arch/arm/mach-cns3xxx/pcie.c
index 38088c36936c..78defd71a829 100644
--- a/arch/arm/mach-cns3xxx/pcie.c
+++ b/arch/arm/mach-cns3xxx/pcie.c
@@ -369,7 +369,7 @@ static int __init cns3xxx_pcie_init(void)
{
int i;
- hook_fault_code(16 + 6, cns3xxx_pcie_abort_handler, SIGBUS,
+ hook_fault_code(16 + 6, cns3xxx_pcie_abort_handler, SIGBUS, 0,
"imprecise external abort");
for (i = 0; i < ARRAY_SIZE(cns3xxx_pcie); i++) {
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c
index 9d77d90f4ade..74e71052da12 100644
--- a/arch/arm/mm/fault-armv.c
+++ b/arch/arm/mm/fault-armv.c
@@ -65,6 +65,30 @@ static int do_adjust_pte(struct vm_area_struct *vma, unsigned long address,
return ret;
}
+#if USE_SPLIT_PTLOCKS
+/*
+ * If we are using split PTE locks, then we need to take the page
+ * lock here. Otherwise we are using shared mm->page_table_lock
+ * which is already locked, thus cannot take it.
+ */
+static inline void do_pte_lock(spinlock_t *ptl)
+{
+ /*
+ * Use nested version here to indicate that we are already
+ * holding one similar spinlock.
+ */
+ spin_lock_nested(ptl, SINGLE_DEPTH_NESTING);
+}
+
+static inline void do_pte_unlock(spinlock_t *ptl)
+{
+ spin_unlock(ptl);
+}
+#else /* !USE_SPLIT_PTLOCKS */
+static inline void do_pte_lock(spinlock_t *ptl) {}
+static inline void do_pte_unlock(spinlock_t *ptl) {}
+#endif /* USE_SPLIT_PTLOCKS */
+
static int adjust_pte(struct vm_area_struct *vma, unsigned long address,
unsigned long pfn)
{
@@ -89,11 +113,11 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address,
*/
ptl = pte_lockptr(vma->vm_mm, pmd);
pte = pte_offset_map_nested(pmd, address);
- spin_lock(ptl);
+ do_pte_lock(ptl);
ret = do_adjust_pte(vma, address, pfn, pte);
- spin_unlock(ptl);
+ do_pte_unlock(ptl);
pte_unmap_nested(pte);
return ret;
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index ec7eddf9e525..f5c5b8da9a87 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -30,6 +30,7 @@
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/slab.h>
+#include <linux/delay.h>
#include <asm/system.h>
#include <mach/hardware.h>
@@ -996,11 +997,17 @@ void omap_start_dma(int lch)
l = dma_read(CCR(lch));
/*
- * Errata: On ES2.0 BUFFERING disable must be set.
- * This will always fail on ES1.0
+ * Errata: Inter Frame DMA buffering issue (All OMAP2420 and
+ * OMAP2430ES1.0): DMA will wrongly buffer elements if packing and
+ * bursting is enabled. This might result in data gets stalled in
+ * FIFO at the end of the block.
+ * Workaround: DMA channels must have BUFFERING_DISABLED bit set to
+ * guarantee no data will stay in the DMA FIFO in case inter frame
+ * buffering occurs.
*/
- if (cpu_is_omap24xx())
- l |= OMAP_DMA_CCR_EN;
+ if (cpu_is_omap2420() ||
+ (cpu_is_omap2430() && (omap_type() == OMAP2430_REV_ES1_0)))
+ l |= OMAP_DMA_CCR_BUFFERING_DISABLE;
l |= OMAP_DMA_CCR_EN;
dma_write(l, CCR(lch));
@@ -1018,8 +1025,39 @@ void omap_stop_dma(int lch)
dma_write(0, CICR(lch));
l = dma_read(CCR(lch));
- l &= ~OMAP_DMA_CCR_EN;
- dma_write(l, CCR(lch));
+ /* OMAP3 Errata i541: sDMA FIFO draining does not finish */
+ if (cpu_is_omap34xx() && (l & OMAP_DMA_CCR_SEL_SRC_DST_SYNC)) {
+ int i = 0;
+ u32 sys_cf;
+
+ /* Configure No-Standby */
+ l = dma_read(OCP_SYSCONFIG);
+ sys_cf = l;
+ l &= ~DMA_SYSCONFIG_MIDLEMODE_MASK;
+ l |= DMA_SYSCONFIG_MIDLEMODE(DMA_IDLEMODE_NO_IDLE);
+ dma_write(l , OCP_SYSCONFIG);
+
+ l = dma_read(CCR(lch));
+ l &= ~OMAP_DMA_CCR_EN;
+ dma_write(l, CCR(lch));
+
+ /* Wait for sDMA FIFO drain */
+ l = dma_read(CCR(lch));
+ while (i < 100 && (l & (OMAP_DMA_CCR_RD_ACTIVE |
+ OMAP_DMA_CCR_WR_ACTIVE))) {
+ udelay(5);
+ i++;
+ l = dma_read(CCR(lch));
+ }
+ if (i >= 100)
+ printk(KERN_ERR "DMA drain did not complete on "
+ "lch %d\n", lch);
+ /* Restore OCP_SYSCONFIG */
+ dma_write(sys_cf, OCP_SYSCONFIG);
+ } else {
+ l &= ~OMAP_DMA_CCR_EN;
+ dma_write(l, CCR(lch));
+ }
if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
int next_lch, cur_lch = lch;
diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h
index af3a03941add..cf66f85a011c 100644
--- a/arch/arm/plat-omap/include/plat/dma.h
+++ b/arch/arm/plat-omap/include/plat/dma.h
@@ -335,6 +335,10 @@
#define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11)
#define OMAP_DMA_CCR_EN (1 << 7)
+#define OMAP_DMA_CCR_RD_ACTIVE (1 << 9)
+#define OMAP_DMA_CCR_WR_ACTIVE (1 << 10)
+#define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24)
+#define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25)
#define OMAP_DMA_DATA_TYPE_S8 0x00
#define OMAP_DMA_DATA_TYPE_S16 0x01
generated by cgit v1.2.3 (git 2.0.4) at 2025-01-15 17:04:03 +0000