d11efa1428
BCM6358 requires further work due to its shared TLB. Signed-off-by: Jonas Gorski <jogo@openwrt.org> SVN-Revision: 36526
167 lines
4.1 KiB
Diff
167 lines
4.1 KiB
Diff
From 661e02b8e2b9a4b48a809bc82dfe8f7b20ca750f Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jogo@openwrt.org>
|
|
Date: Thu, 18 Apr 2013 21:14:49 +0200
|
|
Subject: [PATCH 05/13] MIPS: BCM63XX: replace irq dispatch code with a
|
|
generic version
|
|
|
|
The generic version uses a variable length of u32 registers of u32/u64.
|
|
This allows easier support for longer registers without having to rewrite
|
|
verything.
|
|
|
|
This "generic" version is not slower than the old version in the best case
|
|
(= i == next set bit), and twice as fast in the worst case in 64 bits.
|
|
|
|
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
|
|
---
|
|
arch/mips/bcm63xx/irq.c | 130 ++++++++++++++++++++---------------------------
|
|
1 file changed, 56 insertions(+), 74 deletions(-)
|
|
|
|
--- a/arch/mips/bcm63xx/irq.c
|
|
+++ b/arch/mips/bcm63xx/irq.c
|
|
@@ -240,47 +240,65 @@ static inline void handle_internal(int i
|
|
* will resume the loop where it ended the last time we left this
|
|
* function.
|
|
*/
|
|
-static void __dispatch_internal_32(void)
|
|
-{
|
|
- u32 pending;
|
|
- static int i;
|
|
-
|
|
- pending = bcm_readl(irq_stat_addr) & bcm_readl(irq_mask_addr);
|
|
-
|
|
- if (!pending)
|
|
- return ;
|
|
-
|
|
- while (1) {
|
|
- int to_call = i;
|
|
|
|
- i = (i + 1) & 0x1f;
|
|
- if (pending & (1 << to_call)) {
|
|
- handle_internal(to_call);
|
|
- break;
|
|
- }
|
|
- }
|
|
+#define BUILD_IPIC_INTERNAL(width) \
|
|
+void __dispatch_internal_##width(void) \
|
|
+{ \
|
|
+ u32 pending[width / 32]; \
|
|
+ unsigned int src, tgt; \
|
|
+ bool irqs_pending = false; \
|
|
+ static int i; \
|
|
+ \
|
|
+ /* read registers in reverse order */ \
|
|
+ for (src = 0, tgt = (width / 32); src < (width / 32); src++) { \
|
|
+ u32 val; \
|
|
+ \
|
|
+ val = bcm_readl(irq_stat_addr + src * sizeof(u32)); \
|
|
+ val &= bcm_readl(irq_mask_addr + src * sizeof(u32)); \
|
|
+ pending[--tgt] = val; \
|
|
+ \
|
|
+ if (val) \
|
|
+ irqs_pending = true; \
|
|
+ } \
|
|
+ \
|
|
+ if (!irqs_pending) \
|
|
+ return; \
|
|
+ \
|
|
+ while (1) { \
|
|
+ int to_call = i; \
|
|
+ \
|
|
+ i = (i + 1) & (width - 1); \
|
|
+ if (pending[to_call / 32] & (1 << (to_call & 0x1f))) { \
|
|
+ handle_internal(to_call); \
|
|
+ break; \
|
|
+ } \
|
|
+ } \
|
|
+} \
|
|
+ \
|
|
+static void __internal_irq_mask_##width(unsigned int irq) \
|
|
+{ \
|
|
+ u32 val; \
|
|
+ unsigned reg = (irq / 32) ^ (width/32 - 1); \
|
|
+ unsigned bit = irq & 0x1f; \
|
|
+ \
|
|
+ val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
|
|
+ val &= ~(1 << bit); \
|
|
+ bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
|
|
+} \
|
|
+ \
|
|
+static void __internal_irq_unmask_##width(unsigned int irq) \
|
|
+{ \
|
|
+ u32 val; \
|
|
+ unsigned reg = (irq / 32) ^ (width/32 - 1); \
|
|
+ unsigned bit = irq & 0x1f; \
|
|
+ \
|
|
+ val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
|
|
+ val |= (1 << bit); \
|
|
+ bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
|
|
}
|
|
|
|
-static void __dispatch_internal_64(void)
|
|
-{
|
|
- u64 pending;
|
|
- static int i;
|
|
-
|
|
- pending = bcm_readq(irq_stat_addr) & bcm_readq(irq_mask_addr);
|
|
-
|
|
- if (!pending)
|
|
- return ;
|
|
-
|
|
- while (1) {
|
|
- int to_call = i;
|
|
-
|
|
- i = (i + 1) & 0x3f;
|
|
- if (pending & (1ull << to_call)) {
|
|
- handle_internal(to_call);
|
|
- break;
|
|
- }
|
|
- }
|
|
-}
|
|
+BUILD_IPIC_INTERNAL(32);
|
|
+BUILD_IPIC_INTERNAL(64);
|
|
|
|
asmlinkage void plat_irq_dispatch(void)
|
|
{
|
|
@@ -317,42 +335,6 @@ asmlinkage void plat_irq_dispatch(void)
|
|
* internal IRQs operations: only mask/unmask on PERF irq mask
|
|
* register.
|
|
*/
|
|
-static void __internal_irq_mask_32(unsigned int irq)
|
|
-{
|
|
- u32 mask;
|
|
-
|
|
- mask = bcm_readl(irq_mask_addr);
|
|
- mask &= ~(1 << irq);
|
|
- bcm_writel(mask, irq_mask_addr);
|
|
-}
|
|
-
|
|
-static void __internal_irq_mask_64(unsigned int irq)
|
|
-{
|
|
- u64 mask;
|
|
-
|
|
- mask = bcm_readq(irq_mask_addr);
|
|
- mask &= ~(1ull << irq);
|
|
- bcm_writeq(mask, irq_mask_addr);
|
|
-}
|
|
-
|
|
-static void __internal_irq_unmask_32(unsigned int irq)
|
|
-{
|
|
- u32 mask;
|
|
-
|
|
- mask = bcm_readl(irq_mask_addr);
|
|
- mask |= (1 << irq);
|
|
- bcm_writel(mask, irq_mask_addr);
|
|
-}
|
|
-
|
|
-static void __internal_irq_unmask_64(unsigned int irq)
|
|
-{
|
|
- u64 mask;
|
|
-
|
|
- mask = bcm_readq(irq_mask_addr);
|
|
- mask |= (1ull << irq);
|
|
- bcm_writeq(mask, irq_mask_addr);
|
|
-}
|
|
-
|
|
static void bcm63xx_internal_irq_mask(struct irq_data *d)
|
|
{
|
|
internal_irq_mask(d->irq - IRQ_INTERNAL_BASE);
|