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bcm63xx: add SMP support for BCM6362 and BCM6368 

BCM6358 requires further work due to its shared TLB.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 36526
lede-17.01
Jonas Gorski 2013-05-02 15:28:26 +00:00
parent 8f15326acc
commit d11efa1428
13 changed files with 1275 additions and 0 deletions
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71
target/linux/brcm63xx/patches-3.8/310-BCM63XX-Add-SMP-support-to-prom.c.patch Normal file
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@ -0,0 +1,71 @@
From 10ea7fd6b854c3ecf745d053beba10c7e00c33c9 Mon Sep 17 00:00:00 2001
From: Kevin Cernekee <cernekee@gmail.com>
Date: Sat, 9 Jul 2011 12:15:06 -0700
Subject: [PATCH 01/13] MIPS: BCM63XX: Add SMP support to prom.c
This involves two changes to the BSP code:
1) register_smp_ops() for BMIPS SMP
2) The CPU1 boot vector on some of the BCM63xx platforms conflicts with
the special interrupt vector (IV). Move it to 0x8000_0380 at boot time,
to resolve the conflict.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
[jogo@openwrt: move smp ops registration below #ifdef guard, don't enable
smp for 6328/6358]
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/prom.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
--- a/arch/mips/bcm63xx/prom.c
+++ b/arch/mips/bcm63xx/prom.c
@@ -8,7 +8,11 @@
#include <linux/init.h>
#include <linux/bootmem.h>
+#include <linux/smp.h>
#include <asm/bootinfo.h>
+#include <asm/bmips.h>
+#include <asm/smp-ops.h>
+#include <asm/mipsregs.h>
#include <bcm63xx_board.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_io.h>
@@ -52,6 +56,35 @@ void __init prom_init(void)
/* do low level board init */
board_prom_init();
+
+#if defined(CONFIG_CPU_BMIPS4350) && defined(CONFIG_SMP)
+ /* set up SMP */
+ register_smp_ops(&bmips_smp_ops);
+
+ /*
+ * BCM6328 does not have its second CPU enabled, while BCM6358
+ * needs special handling for its shared TLB, so disable SMP for now.
+ */
+ if (BCMCPU_IS_6328() || BCMCPU_IS_6358()) {
+ bmips_smp_enabled = 0;
+ return;
+ }
+
+ /*
+ * The bootloader has set up the CPU1 reset vector at 0xa000_0200.
+ * This conflicts with the special interrupt vector (IV).
+ * The bootloader has also set up CPU1 to respond to the wrong
+ * IPI interrupt.
+ * Here we will start up CPU1 in the background and ask it to
+ * reconfigure itself then go back to sleep.
+ */
+ memcpy((void *)0xa0000200, &bmips_smp_movevec, 0x20);
+ __sync();
+ set_c0_cause(C_SW0);
+ cpumask_set_cpu(1, &bmips_booted_mask);
+
+ /* FIXME: we really should have some sort of hazard barrier here */
+#endif
}
void __init prom_free_prom_memory(void)

28
target/linux/brcm63xx/patches-3.8/311-MIPS-BCM63XX-Handle-SW-IRQs-0-1.patch Normal file
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From 8e0bd819cc0f8815cad99feea98664172c0b1fe4 Mon Sep 17 00:00:00 2001
From: Kevin Cernekee <cernekee@gmail.com>
Date: Mon, 31 Oct 2011 11:52:10 -0700
Subject: [PATCH 02/13] MIPS: BCM63XX: Handle SW IRQs 0-1
MIPS software IRQs 0 and 1 are used for interprocessor signaling (IPI)
on BMIPS SMP. Make the board support code aware of them.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
[jogo@openwrt.org: move sw irqs behind timer irq]
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -294,6 +294,10 @@ asmlinkage void plat_irq_dispatch(void)
if (cause & CAUSEF_IP7)
do_IRQ(7);
+ if (cause & CAUSEF_IP0)
+ do_IRQ(0);
+ if (cause & CAUSEF_IP1)
+ do_IRQ(1);
if (cause & CAUSEF_IP2)
dispatch_internal();
if (!is_ext_irq_cascaded) {

24
target/linux/brcm63xx/patches-3.8/312-MIPS-BCM63XX-select-SYS_HAS_CPU_BMIPS4350-for-suppor.patch Normal file
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@ -0,0 +1,24 @@
From 1923ce1435a5e89f9550e8c95db37a3ef1f92665 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Sun, 21 Apr 2013 14:44:00 +0200
Subject: [PATCH 03/13] MIPS: BCM63XX: select SYS_HAS_CPU_BMIPS4350 for
supported SoCs
BCM6338, BCM6345 and BCM6348 have a BMIPS3300, everything following
has a BMIPS4350.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -126,6 +126,7 @@ config BCM63XX
select DMA_NONCOHERENT
select IRQ_CPU
select SYS_HAS_CPU_MIPS32_R1
+ select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_HAS_EARLY_PRINTK

51
target/linux/brcm63xx/patches-3.8/313-MIPS-BCM63XX-rename-__dispatch_internal-to-__dispatc.patch Normal file
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@ -0,0 +1,51 @@
From bb2774da9598f3ea38099d3dcf753b585824a011 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Thu, 21 Mar 2013 17:05:15 +0100
Subject: [PATCH 04/13] MIPS: BCM63XX: rename __dispatch_internal to
__dispatch_internal_32
Make it follow the same naming convention as the other functions.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -19,7 +19,7 @@
#include <bcm63xx_io.h>
#include <bcm63xx_irq.h>
-static void __dispatch_internal(void) __maybe_unused;
+static void __dispatch_internal_32(void) __maybe_unused;
static void __dispatch_internal_64(void) __maybe_unused;
static void __internal_irq_mask_32(unsigned int irq) __maybe_unused;
static void __internal_irq_mask_64(unsigned int irq) __maybe_unused;
@@ -106,7 +106,7 @@ static void __internal_irq_unmask_64(uns
#endif
#if irq_bits == 32
-#define dispatch_internal __dispatch_internal
+#define dispatch_internal __dispatch_internal_32
#define internal_irq_mask __internal_irq_mask_32
#define internal_irq_unmask __internal_irq_unmask_32
#else
@@ -207,7 +207,7 @@ static void bcm63xx_init_irq(void)
}
if (irq_bits == 32) {
- dispatch_internal = __dispatch_internal;
+ dispatch_internal = __dispatch_internal_32;
internal_irq_mask = __internal_irq_mask_32;
internal_irq_unmask = __internal_irq_unmask_32;
} else {
@@ -240,7 +240,7 @@ 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(void)
+static void __dispatch_internal_32(void)
{
u32 pending;
static int i;

167
target/linux/brcm63xx/patches-3.8/314-MIPS-BCM63XX-replace-irq-dispatch-code-with-a-generi.patch Normal file
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@ -0,0 +1,167 @@
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);

258
target/linux/brcm63xx/patches-3.8/315-MIPS-BCM63XX-append-cpu-number-to-irq_-stat-mask.patch Normal file
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@ -0,0 +1,258 @@
From 6ec70ebfccd31ae3668d99b5703e5c9ce38384b4 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Thu, 25 Apr 2013 00:24:06 +0200
Subject: [PATCH 06/13] MIPS: BCM63XX: append cpu number to irq_{stat,mask}*
For SMP affinity support we need to discrimnate between the registers
for both CPUs.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 78 ++++++++++-----------
arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 16 ++---
2 files changed, 47 insertions(+), 47 deletions(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -28,8 +28,8 @@ static void __internal_irq_unmask_64(uns
#ifndef BCMCPU_RUNTIME_DETECT
#ifdef CONFIG_BCM63XX_CPU_6328
-#define irq_stat_reg PERF_IRQSTAT_6328_REG
-#define irq_mask_reg PERF_IRQMASK_6328_REG
+#define irq_stat_reg0 PERF_IRQSTAT_6328_REG(0)
+#define irq_mask_reg0 PERF_IRQMASK_6328_REG(0)
#define irq_bits 64
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6328_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -39,8 +39,8 @@ static void __internal_irq_unmask_64(uns
#define ext_irq_cfg_reg2 0
#endif
#ifdef CONFIG_BCM63XX_CPU_6338
-#define irq_stat_reg PERF_IRQSTAT_6338_REG
-#define irq_mask_reg PERF_IRQMASK_6338_REG
+#define irq_stat_reg0 PERF_IRQSTAT_6338_REG
+#define irq_mask_reg0 PERF_IRQMASK_6338_REG
#define irq_bits 32
#define is_ext_irq_cascaded 0
#define ext_irq_start 0
@@ -50,8 +50,8 @@ static void __internal_irq_unmask_64(uns
#define ext_irq_cfg_reg2 0
#endif
#ifdef CONFIG_BCM63XX_CPU_6345
-#define irq_stat_reg PERF_IRQSTAT_6345_REG
-#define irq_mask_reg PERF_IRQMASK_6345_REG
+#define irq_stat_reg0 PERF_IRQSTAT_6345_REG
+#define irq_mask_reg0 PERF_IRQMASK_6345_REG
#define irq_bits 32
#define is_ext_irq_cascaded 0
#define ext_irq_start 0
@@ -61,8 +61,8 @@ static void __internal_irq_unmask_64(uns
#define ext_irq_cfg_reg2 0
#endif
#ifdef CONFIG_BCM63XX_CPU_6348
-#define irq_stat_reg PERF_IRQSTAT_6348_REG
-#define irq_mask_reg PERF_IRQMASK_6348_REG
+#define irq_stat_reg0 PERF_IRQSTAT_6348_REG
+#define irq_mask_reg0 PERF_IRQMASK_6348_REG
#define irq_bits 32
#define is_ext_irq_cascaded 0
#define ext_irq_start 0
@@ -72,8 +72,8 @@ static void __internal_irq_unmask_64(uns
#define ext_irq_cfg_reg2 0
#endif
#ifdef CONFIG_BCM63XX_CPU_6358
-#define irq_stat_reg PERF_IRQSTAT_6358_REG
-#define irq_mask_reg PERF_IRQMASK_6358_REG
+#define irq_stat_reg0 PERF_IRQSTAT_6358_REG(0)
+#define irq_mask_reg0 PERF_IRQMASK_6358_REG(0)
#define irq_bits 32
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6358_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -83,8 +83,8 @@ static void __internal_irq_unmask_64(uns
#define ext_irq_cfg_reg2 0
#endif
#ifdef CONFIG_BCM63XX_CPU_6362
-#define irq_stat_reg PERF_IRQSTAT_6362_REG
-#define irq_mask_reg PERF_IRQMASK_6362_REG
+#define irq_stat_reg0 PERF_IRQSTAT_6362_REG(0)
+#define irq_mask_reg0 PERF_IRQMASK_6362_REG(0)
#define irq_bits 64
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6362_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -94,8 +94,8 @@ static void __internal_irq_unmask_64(uns
#define ext_irq_cfg_reg2 0
#endif
#ifdef CONFIG_BCM63XX_CPU_6368
-#define irq_stat_reg PERF_IRQSTAT_6368_REG
-#define irq_mask_reg PERF_IRQMASK_6368_REG
+#define irq_stat_reg0 PERF_IRQSTAT_6368_REG(0)
+#define irq_mask_reg0 PERF_IRQMASK_6368_REG(0)
#define irq_bits 64
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6368_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -115,15 +115,15 @@ static void __internal_irq_unmask_64(uns
#define internal_irq_unmask __internal_irq_unmask_64
#endif
-#define irq_stat_addr (bcm63xx_regset_address(RSET_PERF) + irq_stat_reg)
-#define irq_mask_addr (bcm63xx_regset_address(RSET_PERF) + irq_mask_reg)
+#define irq_stat_addr0 (bcm63xx_regset_address(RSET_PERF) + irq_stat_reg0)
+#define irq_mask_addr0 (bcm63xx_regset_address(RSET_PERF) + irq_mask_reg0)
static inline void bcm63xx_init_irq(void)
{
}
#else /* ! BCMCPU_RUNTIME_DETECT */
-static u32 irq_stat_addr, irq_mask_addr;
+static u32 irq_stat_addr0, irq_mask_addr0;
static void (*dispatch_internal)(void);
static int is_ext_irq_cascaded;
static unsigned int ext_irq_count;
@@ -136,13 +136,13 @@ static void bcm63xx_init_irq(void)
{
int irq_bits;
- irq_stat_addr = bcm63xx_regset_address(RSET_PERF);
- irq_mask_addr = bcm63xx_regset_address(RSET_PERF);
+ irq_stat_addr0 = bcm63xx_regset_address(RSET_PERF);
+ irq_mask_addr0 = bcm63xx_regset_address(RSET_PERF);
switch (bcm63xx_get_cpu_id()) {
case BCM6328_CPU_ID:
- irq_stat_addr += PERF_IRQSTAT_6328_REG;
- irq_mask_addr += PERF_IRQMASK_6328_REG;
+ irq_stat_addr0 += PERF_IRQSTAT_6328_REG(0);
+ irq_mask_addr0 += PERF_IRQMASK_6328_REG(0);
irq_bits = 64;
ext_irq_count = 4;
is_ext_irq_cascaded = 1;
@@ -151,29 +151,29 @@ static void bcm63xx_init_irq(void)
ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6328;
break;
case BCM6338_CPU_ID:
- irq_stat_addr += PERF_IRQSTAT_6338_REG;
- irq_mask_addr += PERF_IRQMASK_6338_REG;
+ irq_stat_addr0 += PERF_IRQSTAT_6338_REG;
+ irq_mask_addr0 += PERF_IRQMASK_6338_REG;
irq_bits = 32;
ext_irq_count = 4;
ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6338;
break;
case BCM6345_CPU_ID:
- irq_stat_addr += PERF_IRQSTAT_6345_REG;
- irq_mask_addr += PERF_IRQMASK_6345_REG;
+ irq_stat_addr0 += PERF_IRQSTAT_6345_REG;
+ irq_mask_addr0 += PERF_IRQMASK_6345_REG;
irq_bits = 32;
ext_irq_count = 4;
ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6345;
break;
case BCM6348_CPU_ID:
- irq_stat_addr += PERF_IRQSTAT_6348_REG;
- irq_mask_addr += PERF_IRQMASK_6348_REG;
+ irq_stat_addr0 += PERF_IRQSTAT_6348_REG;
+ irq_mask_addr0 += PERF_IRQMASK_6348_REG;
irq_bits = 32;
ext_irq_count = 4;
ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6348;
break;
case BCM6358_CPU_ID:
- irq_stat_addr += PERF_IRQSTAT_6358_REG;
- irq_mask_addr += PERF_IRQMASK_6358_REG;
+ irq_stat_addr0 += PERF_IRQSTAT_6358_REG(0);
+ irq_mask_addr0 += PERF_IRQMASK_6358_REG(0);
irq_bits = 32;
ext_irq_count = 4;
is_ext_irq_cascaded = 1;
@@ -182,8 +182,8 @@ static void bcm63xx_init_irq(void)
ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6358;
break;
case BCM6362_CPU_ID:
- irq_stat_addr += PERF_IRQSTAT_6362_REG;
- irq_mask_addr += PERF_IRQMASK_6362_REG;
+ irq_stat_addr0 += PERF_IRQSTAT_6362_REG(0);
+ irq_mask_addr0 += PERF_IRQMASK_6362_REG(0);
irq_bits = 64;
ext_irq_count = 4;
is_ext_irq_cascaded = 1;
@@ -192,8 +192,8 @@ static void bcm63xx_init_irq(void)
ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6362;
break;
case BCM6368_CPU_ID:
- irq_stat_addr += PERF_IRQSTAT_6368_REG;
- irq_mask_addr += PERF_IRQMASK_6368_REG;
+ irq_stat_addr0 += PERF_IRQSTAT_6368_REG(0);
+ irq_mask_addr0 += PERF_IRQMASK_6368_REG(0);
irq_bits = 64;
ext_irq_count = 6;
is_ext_irq_cascaded = 1;
@@ -253,8 +253,8 @@ void __dispatch_internal_##width(void)
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)); \
+ val = bcm_readl(irq_stat_addr0 + src * sizeof(u32)); \
+ val &= bcm_readl(irq_mask_addr0 + src * sizeof(u32)); \
pending[--tgt] = val; \
\
if (val) \
@@ -281,9 +281,9 @@ static void __internal_irq_mask_##width(
unsigned reg = (irq / 32) ^ (width/32 - 1); \
unsigned bit = irq & 0x1f; \
\
- val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
+ val = bcm_readl(irq_mask_addr0 + reg * sizeof(u32)); \
val &= ~(1 << bit); \
- bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
+ bcm_writel(val, irq_mask_addr0 + reg * sizeof(u32)); \
} \
\
static void __internal_irq_unmask_##width(unsigned int irq) \
@@ -292,9 +292,9 @@ static void __internal_irq_unmask_##widt
unsigned reg = (irq / 32) ^ (width/32 - 1); \
unsigned bit = irq & 0x1f; \
\
- val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
+ val = bcm_readl(irq_mask_addr0 + reg * sizeof(u32)); \
val |= (1 << bit); \
- bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
+ bcm_writel(val, irq_mask_addr0 + reg * sizeof(u32)); \
}
BUILD_IPIC_INTERNAL(32);
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -181,22 +181,22 @@
#define SYS_PLL_SOFT_RESET 0x1
/* Interrupt Mask register */
-#define PERF_IRQMASK_6328_REG 0x20
+#define PERF_IRQMASK_6328_REG(x) (0x20 + (x) * 0x10)
#define PERF_IRQMASK_6338_REG 0xc
#define PERF_IRQMASK_6345_REG 0xc
#define PERF_IRQMASK_6348_REG 0xc
-#define PERF_IRQMASK_6358_REG 0xc
-#define PERF_IRQMASK_6362_REG 0x20
-#define PERF_IRQMASK_6368_REG 0x20
+#define PERF_IRQMASK_6358_REG(x) (0xc + (x) * 0x2c)
+#define PERF_IRQMASK_6362_REG(x) (0x20 + (x) * 0x10)
+#define PERF_IRQMASK_6368_REG(x) (0x20 + (x) * 0x10)
/* Interrupt Status register */
-#define PERF_IRQSTAT_6328_REG 0x28
+#define PERF_IRQSTAT_6328_REG(x) (0x28 + (x) * 0x10)
#define PERF_IRQSTAT_6338_REG 0x10
#define PERF_IRQSTAT_6345_REG 0x10
#define PERF_IRQSTAT_6348_REG 0x10
-#define PERF_IRQSTAT_6358_REG 0x10
-#define PERF_IRQSTAT_6362_REG 0x28
-#define PERF_IRQSTAT_6368_REG 0x28
+#define PERF_IRQSTAT_6358_REG(x) (0x10 + (x) * 0x2c)
+#define PERF_IRQSTAT_6362_REG(x) (0x28 + (x) * 0x10)
+#define PERF_IRQSTAT_6368_REG(x) (0x28 + (x) * 0x10)
/* External Interrupt Configuration register */
#define PERF_EXTIRQ_CFG_REG_6328 0x18

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From b14de5c78d32f8f98535a99ea56bb924beb66810 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Thu, 25 Apr 2013 00:31:29 +0200
Subject: [PATCH 07/13] MIPS: BCM63XX: populate irq_{stat,mask}_addr for
second CPU
Populate it for all platforms with a BMIPS4350.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -30,6 +30,8 @@ static void __internal_irq_unmask_64(uns
#ifdef CONFIG_BCM63XX_CPU_6328
#define irq_stat_reg0 PERF_IRQSTAT_6328_REG(0)
#define irq_mask_reg0 PERF_IRQMASK_6328_REG(0)
+#define irq_stat_reg1 PERF_IRQSTAT_6328_REG(1)
+#define irq_mask_reg1 PERF_IRQMASK_6328_REG(1)
#define irq_bits 64
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6328_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -41,6 +43,8 @@ static void __internal_irq_unmask_64(uns
#ifdef CONFIG_BCM63XX_CPU_6338
#define irq_stat_reg0 PERF_IRQSTAT_6338_REG
#define irq_mask_reg0 PERF_IRQMASK_6338_REG
+#define irq_stat_reg1 0
+#define irq_mask_reg1 0
#define irq_bits 32
#define is_ext_irq_cascaded 0
#define ext_irq_start 0
@@ -52,6 +56,8 @@ static void __internal_irq_unmask_64(uns
#ifdef CONFIG_BCM63XX_CPU_6345
#define irq_stat_reg0 PERF_IRQSTAT_6345_REG
#define irq_mask_reg0 PERF_IRQMASK_6345_REG
+#define irq_stat_reg1 0
+#define irq_mask_reg1 0
#define irq_bits 32
#define is_ext_irq_cascaded 0
#define ext_irq_start 0
@@ -63,6 +69,8 @@ static void __internal_irq_unmask_64(uns
#ifdef CONFIG_BCM63XX_CPU_6348
#define irq_stat_reg0 PERF_IRQSTAT_6348_REG
#define irq_mask_reg0 PERF_IRQMASK_6348_REG
+#define irq_stat_reg1 0
+#define irq_mask_reg1 0
#define irq_bits 32
#define is_ext_irq_cascaded 0
#define ext_irq_start 0
@@ -74,6 +82,8 @@ static void __internal_irq_unmask_64(uns
#ifdef CONFIG_BCM63XX_CPU_6358
#define irq_stat_reg0 PERF_IRQSTAT_6358_REG(0)
#define irq_mask_reg0 PERF_IRQMASK_6358_REG(0)
+#define irq_stat_reg1 PERF_IRQSTAT_6358_REG(1)
+#define irq_mask_reg1 PERF_IRQMASK_6358_REG(1)
#define irq_bits 32
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6358_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -85,6 +95,8 @@ static void __internal_irq_unmask_64(uns
#ifdef CONFIG_BCM63XX_CPU_6362
#define irq_stat_reg0 PERF_IRQSTAT_6362_REG(0)
#define irq_mask_reg0 PERF_IRQMASK_6362_REG(0)
+#define irq_stat_reg1 PERF_IRQSTAT_6362_REG(1)
+#define irq_mask_reg1 PERF_IRQMASK_6362_REG(1)
#define irq_bits 64
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6362_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -96,6 +108,8 @@ static void __internal_irq_unmask_64(uns
#ifdef CONFIG_BCM63XX_CPU_6368
#define irq_stat_reg0 PERF_IRQSTAT_6368_REG(0)
#define irq_mask_reg0 PERF_IRQMASK_6368_REG(0)
+#define irq_stat_reg1 PERF_IRQSTAT_6368_REG(1)
+#define irq_mask_reg1 PERF_IRQMASK_6368_REG(1)
#define irq_bits 64
#define is_ext_irq_cascaded 1
#define ext_irq_start (BCM_6368_EXT_IRQ0 - IRQ_INTERNAL_BASE)
@@ -117,13 +131,15 @@ static void __internal_irq_unmask_64(uns
#define irq_stat_addr0 (bcm63xx_regset_address(RSET_PERF) + irq_stat_reg0)
#define irq_mask_addr0 (bcm63xx_regset_address(RSET_PERF) + irq_mask_reg0)
+#define irq_stat_addr1 (bcm63xx_regset_address(RSET_PERF) + irq_stat_reg1)
+#define irq_mask_addr1 (bcm63xx_regset_address(RSET_PERF) + irq_mask_reg1)
static inline void bcm63xx_init_irq(void)
{
}
#else /* ! BCMCPU_RUNTIME_DETECT */
-static u32 irq_stat_addr0, irq_mask_addr0;
+static u32 irq_stat_addr0, irq_mask_addr0, irq_stat_addr1, irq_mask_addr1;
static void (*dispatch_internal)(void);
static int is_ext_irq_cascaded;
static unsigned int ext_irq_count;
@@ -138,11 +154,15 @@ static void bcm63xx_init_irq(void)
irq_stat_addr0 = bcm63xx_regset_address(RSET_PERF);
irq_mask_addr0 = bcm63xx_regset_address(RSET_PERF);
+ irq_stat_addr1 = bcm63xx_regset_address(RSET_PERF);
+ irq_mask_addr1 = bcm63xx_regset_address(RSET_PERF);
switch (bcm63xx_get_cpu_id()) {
case BCM6328_CPU_ID:
irq_stat_addr0 += PERF_IRQSTAT_6328_REG(0);
irq_mask_addr0 += PERF_IRQMASK_6328_REG(0);
+ irq_stat_addr1 += PERF_IRQSTAT_6328_REG(1);
+ irq_stat_addr1 += PERF_IRQMASK_6328_REG(1);
irq_bits = 64;
ext_irq_count = 4;
is_ext_irq_cascaded = 1;
@@ -174,6 +194,8 @@ static void bcm63xx_init_irq(void)
case BCM6358_CPU_ID:
irq_stat_addr0 += PERF_IRQSTAT_6358_REG(0);
irq_mask_addr0 += PERF_IRQMASK_6358_REG(0);
+ irq_stat_addr1 += PERF_IRQSTAT_6358_REG(1);
+ irq_mask_addr1 += PERF_IRQMASK_6358_REG(1);
irq_bits = 32;
ext_irq_count = 4;
is_ext_irq_cascaded = 1;
@@ -184,6 +206,8 @@ static void bcm63xx_init_irq(void)
case BCM6362_CPU_ID:
irq_stat_addr0 += PERF_IRQSTAT_6362_REG(0);
irq_mask_addr0 += PERF_IRQMASK_6362_REG(0);
+ irq_stat_addr1 += PERF_IRQSTAT_6362_REG(1);
+ irq_mask_addr1 += PERF_IRQMASK_6362_REG(1);
irq_bits = 64;
ext_irq_count = 4;
is_ext_irq_cascaded = 1;
@@ -194,6 +218,8 @@ static void bcm63xx_init_irq(void)
case BCM6368_CPU_ID:
irq_stat_addr0 += PERF_IRQSTAT_6368_REG(0);
irq_mask_addr0 += PERF_IRQMASK_6368_REG(0);
+ irq_stat_addr1 += PERF_IRQSTAT_6368_REG(1);
+ irq_mask_addr1 += PERF_IRQMASK_6368_REG(1);
irq_bits = 64;
ext_irq_count = 6;
is_ext_irq_cascaded = 1;

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@ -0,0 +1,80 @@
From 7c9d3fe01034adbb890aab7c44534658f89c211b Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Thu, 25 Apr 2013 15:35:12 +0200
Subject: [PATCH 08/13] MIPS: BCM63XX: use a helper for getting the right
register address
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 30 ++++++++++++++++++++++++------
1 file changed, 24 insertions(+), 6 deletions(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -251,6 +251,20 @@ static inline u32 get_ext_irq_perf_reg(i
return ext_irq_cfg_reg2;
}
+static inline u32 get_irq_stat_addr(int cpu)
+{
+ if (cpu == 0)
+ return irq_stat_addr0;
+ return irq_stat_addr1;
+}
+
+static inline u32 get_irq_mask_addr(int cpu)
+{
+ if (cpu == 0)
+ return irq_mask_addr0;
+ return irq_mask_addr1;
+}
+
static inline void handle_internal(int intbit)
{
if (is_ext_irq_cascaded &&
@@ -274,13 +288,15 @@ void __dispatch_internal_##width(void)
unsigned int src, tgt; \
bool irqs_pending = false; \
static int i; \
+ u32 irq_stat_addr = get_irq_stat_addr(0); \
+ u32 irq_mask_addr = get_irq_mask_addr(0); \
\
/* read registers in reverse order */ \
for (src = 0, tgt = (width / 32); src < (width / 32); src++) { \
u32 val; \
\
- val = bcm_readl(irq_stat_addr0 + src * sizeof(u32)); \
- val &= bcm_readl(irq_mask_addr0 + src * sizeof(u32)); \
+ val = bcm_readl(irq_stat_addr + src * sizeof(u32)); \
+ val &= bcm_readl(irq_mask_addr + src * sizeof(u32)); \
pending[--tgt] = val; \
\
if (val) \
@@ -306,10 +322,11 @@ static void __internal_irq_mask_##width(
u32 val; \
unsigned reg = (irq / 32) ^ (width/32 - 1); \
unsigned bit = irq & 0x1f; \
+ u32 irq_mask_addr = get_irq_mask_addr(0); \
\
- val = bcm_readl(irq_mask_addr0 + reg * sizeof(u32)); \
+ val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
val &= ~(1 << bit); \
- bcm_writel(val, irq_mask_addr0 + reg * sizeof(u32)); \
+ bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
} \
\
static void __internal_irq_unmask_##width(unsigned int irq) \
@@ -317,10 +334,11 @@ static void __internal_irq_unmask_##widt
u32 val; \
unsigned reg = (irq / 32) ^ (width/32 - 1); \
unsigned bit = irq & 0x1f; \
+ u32 irq_mask_addr = get_irq_mask_addr(0); \
\
- val = bcm_readl(irq_mask_addr0 + reg * sizeof(u32)); \
+ val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
val |= (1 << bit); \
- bcm_writel(val, irq_mask_addr0 + reg * sizeof(u32)); \
+ bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
}
BUILD_IPIC_INTERNAL(32);

59
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@ -0,0 +1,59 @@
From 398337c57ebe3c704e0df5f569e6bd860ffe8914 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Fri, 26 Apr 2013 11:21:16 +0200
Subject: [PATCH 09/13] MIPS: BCM63XX: add cpu argument to dispatch internal
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -19,8 +19,8 @@
#include <bcm63xx_io.h>
#include <bcm63xx_irq.h>
-static void __dispatch_internal_32(void) __maybe_unused;
-static void __dispatch_internal_64(void) __maybe_unused;
+static void __dispatch_internal_32(int cpu) __maybe_unused;
+static void __dispatch_internal_64(int cpu) __maybe_unused;
static void __internal_irq_mask_32(unsigned int irq) __maybe_unused;
static void __internal_irq_mask_64(unsigned int irq) __maybe_unused;
static void __internal_irq_unmask_32(unsigned int irq) __maybe_unused;
@@ -140,7 +140,7 @@ static inline void bcm63xx_init_irq(void
#else /* ! BCMCPU_RUNTIME_DETECT */
static u32 irq_stat_addr0, irq_mask_addr0, irq_stat_addr1, irq_mask_addr1;
-static void (*dispatch_internal)(void);
+static void (*dispatch_internal)(int cpu);
static int is_ext_irq_cascaded;
static unsigned int ext_irq_count;
static unsigned int ext_irq_start, ext_irq_end;
@@ -282,14 +282,14 @@ static inline void handle_internal(int i
*/
#define BUILD_IPIC_INTERNAL(width) \
-void __dispatch_internal_##width(void) \
+void __dispatch_internal_##width(int cpu) \
{ \
u32 pending[width / 32]; \
unsigned int src, tgt; \
bool irqs_pending = false; \
static int i; \
- u32 irq_stat_addr = get_irq_stat_addr(0); \
- u32 irq_mask_addr = get_irq_mask_addr(0); \
+ u32 irq_stat_addr = get_irq_stat_addr(cpu); \
+ u32 irq_mask_addr = get_irq_mask_addr(cpu); \
\
/* read registers in reverse order */ \
for (src = 0, tgt = (width / 32); src < (width / 32); src++) { \
@@ -361,7 +361,7 @@ asmlinkage void plat_irq_dispatch(void)
if (cause & CAUSEF_IP1)
do_IRQ(1);
if (cause & CAUSEF_IP2)
- dispatch_internal();
+ dispatch_internal(0);
if (!is_ext_irq_cascaded) {
if (cause & CAUSEF_IP3)
do_IRQ(IRQ_EXT_0);

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@ -0,0 +1,174 @@
From 7b8e7bc9806b61be2f07bf2bbb5e3ee6e0f333e9 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Sun, 21 Apr 2013 15:38:56 +0200
Subject: [PATCH 10/13] MIPS: BCM63XX: protect irq register accesses with a
spinlock
Since IRQs can be handled on both CPUs, we need to ensure that we
don't try to modify the IRQ registers at the same time.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 47 ++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 42 insertions(+), 5 deletions(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -12,6 +12,7 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/irq.h>
+#include <linux/spinlock.h>
#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
#include <bcm63xx_cpu.h>
@@ -26,6 +27,9 @@ static void __internal_irq_mask_64(unsig
static void __internal_irq_unmask_32(unsigned int irq) __maybe_unused;
static void __internal_irq_unmask_64(unsigned int irq) __maybe_unused;
+static DEFINE_SPINLOCK(ipic_lock);
+static DEFINE_SPINLOCK(epic_lock);
+
#ifndef BCMCPU_RUNTIME_DETECT
#ifdef CONFIG_BCM63XX_CPU_6328
#define irq_stat_reg0 PERF_IRQSTAT_6328_REG(0)
@@ -290,7 +294,9 @@ void __dispatch_internal_##width(int cpu
static int i; \
u32 irq_stat_addr = get_irq_stat_addr(cpu); \
u32 irq_mask_addr = get_irq_mask_addr(cpu); \
+ unsigned long flags; \
\
+ spin_lock_irqsave(&ipic_lock, flags); \
/* read registers in reverse order */ \
for (src = 0, tgt = (width / 32); src < (width / 32); src++) { \
u32 val; \
@@ -302,6 +308,7 @@ void __dispatch_internal_##width(int cpu
if (val) \
irqs_pending = true; \
} \
+ spin_unlock_irqrestore(&ipic_lock, flags); \
\
if (!irqs_pending) \
return; \
@@ -381,12 +388,20 @@ asmlinkage void plat_irq_dispatch(void)
*/
static void bcm63xx_internal_irq_mask(struct irq_data *d)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ipic_lock, flags);
internal_irq_mask(d->irq - IRQ_INTERNAL_BASE);
+ spin_unlock_irqrestore(&ipic_lock, flags);
}
static void bcm63xx_internal_irq_unmask(struct irq_data *d)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ipic_lock, flags);
internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE);
+ spin_unlock_irqrestore(&ipic_lock, flags);
}
/*
@@ -397,8 +412,11 @@ static void bcm63xx_external_irq_mask(st
{
unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
u32 reg, regaddr;
+ unsigned long flags;
regaddr = get_ext_irq_perf_reg(irq);
+
+ spin_lock_irqsave(&epic_lock, flags);
reg = bcm_perf_readl(regaddr);
if (BCMCPU_IS_6348())
@@ -407,16 +425,24 @@ static void bcm63xx_external_irq_mask(st
reg &= ~EXTIRQ_CFG_MASK(irq % 4);
bcm_perf_writel(reg, regaddr);
- if (is_ext_irq_cascaded)
- internal_irq_mask(irq + ext_irq_start);
+ spin_unlock_irqrestore(&epic_lock, flags);
+
+ if (is_ext_irq_cascaded) {
+ struct irq_data *cd = irq_get_irq_data(irq + ext_irq_start);
+
+ bcm63xx_internal_irq_mask(cd);
+ }
}
static void bcm63xx_external_irq_unmask(struct irq_data *d)
{
unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
u32 reg, regaddr;
+ unsigned long flags;
regaddr = get_ext_irq_perf_reg(irq);
+
+ spin_lock_irqsave(&epic_lock, flags);
reg = bcm_perf_readl(regaddr);
if (BCMCPU_IS_6348())
@@ -425,16 +451,22 @@ static void bcm63xx_external_irq_unmask(
reg |= EXTIRQ_CFG_MASK(irq % 4);
bcm_perf_writel(reg, regaddr);
+ spin_unlock_irqrestore(&epic_lock, flags);
+
+ if (is_ext_irq_cascaded) {
+ struct irq_data *cd = irq_get_irq_data(irq + ext_irq_start);
- if (is_ext_irq_cascaded)
- internal_irq_unmask(irq + ext_irq_start);
+ bcm63xx_internal_irq_unmask(cd);
+ }
}
static void bcm63xx_external_irq_clear(struct irq_data *d)
{
unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
u32 reg, regaddr;
+ unsigned long flags;
+ spin_lock_irqsave(&epic_lock, flags);
regaddr = get_ext_irq_perf_reg(irq);
reg = bcm_perf_readl(regaddr);
@@ -444,6 +476,7 @@ static void bcm63xx_external_irq_clear(s
reg |= EXTIRQ_CFG_CLEAR(irq % 4);
bcm_perf_writel(reg, regaddr);
+ spin_unlock_irqrestore(&epic_lock, flags);
}
static int bcm63xx_external_irq_set_type(struct irq_data *d,
@@ -452,6 +485,7 @@ static int bcm63xx_external_irq_set_type
unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
u32 reg, regaddr;
int levelsense, sense, bothedge;
+ unsigned long flags;
flow_type &= IRQ_TYPE_SENSE_MASK;
@@ -486,9 +520,11 @@ static int bcm63xx_external_irq_set_type
}
regaddr = get_ext_irq_perf_reg(irq);
- reg = bcm_perf_readl(regaddr);
irq %= 4;
+ spin_lock_irqsave(&epic_lock, flags);
+ reg = bcm_perf_readl(regaddr);
+
switch (bcm63xx_get_cpu_id()) {
case BCM6348_CPU_ID:
if (levelsense)
@@ -529,6 +565,7 @@ static int bcm63xx_external_irq_set_type
}
bcm_perf_writel(reg, regaddr);
+ spin_unlock_irqrestore(&epic_lock, flags);
irqd_set_trigger_type(d, flow_type);
if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))

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@ -0,0 +1,96 @@
From 1baec3216529f795905b6376f9c8e4f14b114ba2 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Fri, 26 Apr 2013 12:03:15 +0200
Subject: [PATCH 11/13] MIPS: BCM63XX: wire up the second CPU's irq line
It's hardwired to IRQ3, so we don't need to actually check the CPU id.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 40 ++++++++++++++++++++++++++++++++--------
1 file changed, 32 insertions(+), 8 deletions(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -329,11 +329,15 @@ static void __internal_irq_mask_##width(
u32 val; \
unsigned reg = (irq / 32) ^ (width/32 - 1); \
unsigned bit = irq & 0x1f; \
- u32 irq_mask_addr = get_irq_mask_addr(0); \
+ int cpu; \
\
- val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
- val &= ~(1 << bit); \
- bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
+ for_each_online_cpu(cpu) { \
+ u32 irq_mask_addr = get_irq_mask_addr(cpu); \
+ \
+ 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) \
@@ -341,11 +345,15 @@ static void __internal_irq_unmask_##widt
u32 val; \
unsigned reg = (irq / 32) ^ (width/32 - 1); \
unsigned bit = irq & 0x1f; \
- u32 irq_mask_addr = get_irq_mask_addr(0); \
+ int cpu; \
+ \
+ for_each_online_cpu(cpu) { \
+ u32 irq_mask_addr = get_irq_mask_addr(cpu); \
\
- val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
- val |= (1 << bit); \
- bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
+ val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
+ val |= (1 << bit); \
+ bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
+ } \
}
BUILD_IPIC_INTERNAL(32);
@@ -369,6 +377,10 @@ asmlinkage void plat_irq_dispatch(void)
do_IRQ(1);
if (cause & CAUSEF_IP2)
dispatch_internal(0);
+#ifdef CONFIG_SMP
+ if (cause & CAUSEF_IP3)
+ dispatch_internal(1);
+#else
if (!is_ext_irq_cascaded) {
if (cause & CAUSEF_IP3)
do_IRQ(IRQ_EXT_0);
@@ -379,6 +391,7 @@ asmlinkage void plat_irq_dispatch(void)
if (cause & CAUSEF_IP6)
do_IRQ(IRQ_EXT_3);
}
+#endif
} while (1);
}
@@ -598,6 +611,14 @@ static struct irqaction cpu_ip2_cascade_
.flags = IRQF_NO_THREAD,
};
+#ifdef CONFIG_SMP
+static struct irqaction cpu_ip3_cascade_action = {
+ .handler = no_action,
+ .name = "cascade_ip3",
+ .flags = IRQF_NO_THREAD,
+};
+#endif
+
static struct irqaction cpu_ext_cascade_action = {
.handler = no_action,
.name = "cascade_extirq",
@@ -624,4 +645,7 @@ void __init arch_init_irq(void)
}
setup_irq(MIPS_CPU_IRQ_BASE + 2, &cpu_ip2_cascade_action);
+#ifdef CONFIG_SMP
+ setup_irq(MIPS_CPU_IRQ_BASE + 3, &cpu_ip3_cascade_action);
+#endif
}

68
target/linux/brcm63xx/patches-3.8/321-MIPS-BCM63XX-add-cpumask-argument-to-unmask.patch Normal file
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@ -0,0 +1,68 @@
From 8679976d2ec08db4e4a14ecdd1ee022b70e51fc6 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Tue, 30 Apr 2013 11:26:53 +0200
Subject: [PATCH 12/13] MIPS: BCM63XX: add cpumask argument to unmask
Allow selective unmasking of IPIC irqs.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -24,8 +24,10 @@ static void __dispatch_internal_32(int c
static void __dispatch_internal_64(int cpu) __maybe_unused;
static void __internal_irq_mask_32(unsigned int irq) __maybe_unused;
static void __internal_irq_mask_64(unsigned int irq) __maybe_unused;
-static void __internal_irq_unmask_32(unsigned int irq) __maybe_unused;
-static void __internal_irq_unmask_64(unsigned int irq) __maybe_unused;
+static void __internal_irq_unmask_32(unsigned int irq,
+ const struct cpumask *dest) __maybe_unused;
+static void __internal_irq_unmask_64(unsigned int irq,
+ const struct cpumask *dest) __maybe_unused;
static DEFINE_SPINLOCK(ipic_lock);
static DEFINE_SPINLOCK(epic_lock);
@@ -150,7 +152,8 @@ static unsigned int ext_irq_count;
static unsigned int ext_irq_start, ext_irq_end;
static unsigned int ext_irq_cfg_reg1, ext_irq_cfg_reg2;
static void (*internal_irq_mask)(unsigned int irq);
-static void (*internal_irq_unmask)(unsigned int irq);
+static void (*internal_irq_unmask)(unsigned int irq,
+ const struct cpumask *dest);
static void bcm63xx_init_irq(void)
{
@@ -340,7 +343,8 @@ static void __internal_irq_mask_##width(
} \
} \
\
-static void __internal_irq_unmask_##width(unsigned int irq) \
+static void __internal_irq_unmask_##width(unsigned int irq, \
+ const struct cpumask *dest) \
{ \
u32 val; \
unsigned reg = (irq / 32) ^ (width/32 - 1); \
@@ -351,7 +355,10 @@ static void __internal_irq_unmask_##widt
u32 irq_mask_addr = get_irq_mask_addr(cpu); \
\
val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
- val |= (1 << bit); \
+ if (cpu_isset(cpu, *dest)) \
+ val |= (1 << bit); \
+ else \
+ val &= ~(1 << bit); \
bcm_writel(val, irq_mask_addr + reg * sizeof(u32)); \
} \
}
@@ -413,7 +420,7 @@ static void bcm63xx_internal_irq_unmask(
unsigned long flags;
spin_lock_irqsave(&ipic_lock, flags);
- internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE);
+ internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, cpu_online_mask);
spin_unlock_irqrestore(&ipic_lock, flags);
}

61
target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch Normal file
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@ -0,0 +1,61 @@
From a8bb19e5ba9a3a73fe6a761295b67b641a7bc9df Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Fri, 26 Apr 2013 12:06:03 +0200
Subject: [PATCH 13/13] MIPS: BCM63XX: allow setting affinity for IPIC
Add support for setting the SMP affinity for the IPIC IRQs.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -418,9 +418,14 @@ static void bcm63xx_internal_irq_mask(st
static void bcm63xx_internal_irq_unmask(struct irq_data *d)
{
unsigned long flags;
+ const struct cpumask *dest = cpu_online_mask;
spin_lock_irqsave(&ipic_lock, flags);
- internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, cpu_online_mask);
+#ifdef CONFIG_SMP
+ if (irqd_affinity_was_set(d))
+ dest = d->affinity;
+#endif
+ internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, dest);
spin_unlock_irqrestore(&ipic_lock, flags);
}
@@ -596,10 +601,30 @@ static int bcm63xx_external_irq_set_type
return IRQ_SET_MASK_OK_NOCOPY;
}
+#ifdef CONFIG_SMP
+static int bcm63xx_internal_set_affinity(struct irq_data *data,
+ const struct cpumask *dest,
+ bool force)
+{
+ unsigned int irq = data->irq - IRQ_INTERNAL_BASE;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ipic_lock, flags);
+ if (!irqd_irq_disabled(data))
+ internal_irq_unmask(irq, dest);
+ spin_unlock_irqrestore(&ipic_lock, flags);
+
+ return 0;
+}
+#endif
+
static struct irq_chip bcm63xx_internal_irq_chip = {
.name = "bcm63xx_ipic",
.irq_mask = bcm63xx_internal_irq_mask,
.irq_unmask = bcm63xx_internal_irq_unmask,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = bcm63xx_internal_set_affinity,
+#endif
};
static struct irq_chip bcm63xx_external_irq_chip = {