diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/apic.h | 16 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic_flat_64.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic_noop.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic_numachip.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/bigsmp_32.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/es7000_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/numaq_32.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/probe_32.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/summit_32.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_cluster.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_phys.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 1 |
12 files changed, 28 insertions, 1 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index a09e9ab0bbdf..bf8d065dd977 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -351,6 +351,14 @@ struct apic { /* apic ops */ u32 (*read)(u32 reg); void (*write)(u32 reg, u32 v); + /* + * ->eoi_write() has the same signature as ->write(). + * + * Drivers can support both ->eoi_write() and ->write() by passing the same + * callback value. Kernel can override ->eoi_write() and fall back + * on write for EOI. + */ + void (*eoi_write)(u32 reg, u32 v); u64 (*icr_read)(void); void (*icr_write)(u32 low, u32 high); void (*wait_icr_idle)(void); @@ -426,6 +434,11 @@ static inline void apic_write(u32 reg, u32 val) apic->write(reg, val); } +static inline void apic_eoi(void) +{ + apic->eoi_write(APIC_EOI, APIC_EOI_ACK); +} + static inline u64 apic_icr_read(void) { return apic->icr_read(); @@ -450,6 +463,7 @@ static inline u32 safe_apic_wait_icr_idle(void) static inline u32 apic_read(u32 reg) { return 0; } static inline void apic_write(u32 reg, u32 val) { } +static inline void apic_eoi(void) { } static inline u64 apic_icr_read(void) { return 0; } static inline void apic_icr_write(u32 low, u32 high) { } static inline void apic_wait_icr_idle(void) { } @@ -463,7 +477,7 @@ static inline void ack_APIC_irq(void) * ack_APIC_irq() actually gets compiled as a single instruction * ... yummie. */ - apic_write(APIC_EOI, APIC_EOI_ACK); + apic_eoi(); } static inline unsigned default_get_apic_id(unsigned long x) diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index 359b6899a36c..0e881c46e8c8 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -227,6 +227,7 @@ static struct apic apic_flat = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, @@ -386,6 +387,7 @@ static struct apic apic_physflat = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index 634ae6cdd5c9..a6e4c6e06c08 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -181,6 +181,7 @@ struct apic apic_noop = { .read = noop_apic_read, .write = noop_apic_write, + .eoi_write = noop_apic_write, .icr_read = noop_apic_icr_read, .icr_write = noop_apic_icr_write, .wait_icr_idle = noop_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 23e75422e013..6ec6d5d297c3 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -295,6 +295,7 @@ static struct apic apic_numachip __refconst = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index 0cdec7065aff..31fbdbfbf960 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -248,6 +248,7 @@ static struct apic apic_bigsmp = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c index e42d1d3b9134..db4ab1be3c79 100644 --- a/arch/x86/kernel/apic/es7000_32.c +++ b/arch/x86/kernel/apic/es7000_32.c @@ -678,6 +678,7 @@ static struct apic __refdata apic_es7000_cluster = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, @@ -742,6 +743,7 @@ static struct apic __refdata apic_es7000 = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c index 00d2422ca7c9..f00a68cca37a 100644 --- a/arch/x86/kernel/apic/numaq_32.c +++ b/arch/x86/kernel/apic/numaq_32.c @@ -530,6 +530,7 @@ static struct apic __refdata apic_numaq = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index ff2c1b9aac4d..1b291da09e60 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -142,6 +142,7 @@ static struct apic apic_default = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c index fea000b27f07..659897c00755 100644 --- a/arch/x86/kernel/apic/summit_32.c +++ b/arch/x86/kernel/apic/summit_32.c @@ -546,6 +546,7 @@ static struct apic apic_summit = { .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 48f3103b3c93..a5baa785a251 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -260,6 +260,7 @@ static struct apic apic_x2apic_cluster = { .read = native_apic_msr_read, .write = native_apic_msr_write, + .eoi_write = native_apic_msr_write, .icr_read = native_x2apic_icr_read, .icr_write = native_x2apic_icr_write, .wait_icr_idle = native_x2apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 991e315f4227..834035666b8d 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -172,6 +172,7 @@ static struct apic apic_x2apic_phys = { .read = native_apic_msr_read, .write = native_apic_msr_write, + .eoi_write = native_apic_msr_write, .icr_read = native_x2apic_icr_read, .icr_write = native_x2apic_icr_write, .wait_icr_idle = native_x2apic_wait_icr_idle, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 87bfa69e216e..5b0e3d0a3d2d 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -404,6 +404,7 @@ static struct apic __refdata apic_x2apic_uv_x = { .read = native_apic_msr_read, .write = native_apic_msr_write, + .eoi_write = native_apic_msr_write, .icr_read = native_x2apic_icr_read, .icr_write = native_x2apic_icr_write, .wait_icr_idle = native_x2apic_wait_icr_idle, |