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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-03 23:55:55 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-03 23:55:55 (GMT) |
commit | 807249d3ada1ff28a47c4054ca4edd479421b671 (patch) | |
tree | a9051ff7b4c31670ac89bb037c90d5baf90d449d /drivers/irqchip | |
parent | ff474e8ca8547d09cb82ebab56d4c96f9eea01ce (diff) | |
parent | 2db97045aa40da4312f7321845bc52b136c8603a (diff) | |
download | linux-807249d3ada1ff28a47c4054ca4edd479421b671.tar.xz |
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
"This is the main pull request for 4.3 for MIPS. Here's the summary:
Three fixes that didn't make 4.2-stable:
- a -Os build might compile the kernel using the MIPS16 instruction
set but the R2 optimized inline functions in <uapi/asm/swab.h> are
implemented using 32-bit wide instructions which is invalid.
- a build error in pgtable-bits.h for a particular kernel
configuration.
- accessing registers of the CM GCR might have been compiled to use
64 bit accesses but these registers are onl 32 bit wide.
And also a few new bits:
- move the ATH79 GPIO driver to drivers/gpio
- the definition of IRQCHIP_DECLARE has moved to linux/irqchip.h,
change ATH79 accordingly.
- fix definition of pgprot_writecombine
- add an implementation of dma_map_ops.mmap
- fix alignment of quiet build output for vmlinuz link
- BCM47xx: Use kmemdup rather than duplicating its implementation
- Netlogic: Fix 0x0x prefixes of constants.
- merge Bjorn Helgaas' series to remove most of the weak keywords
from function declarations.
- CP0 and CP1 registers are best considered treated as unsigned
values to avoid large values from becoming negative values.
- improve support for the MIPS GIC timer.
- enable common clock framework for Malta and SEAD3.
- a number of improvments and fixes to dump_tlb().
- document the MIPS TLB dump functionality in Magic SysRq.
- Cavium Octeon CN68XX improvments.
- NetLogic improvments.
- irq: Use access helper irq_data_get_affinity_mask.
- handle MSA unaligned accesses.
- a number of R6-related math-emu fixes.
- support for I6400.
- improvments to MSA support.
- add uprobes support.
- move from deprecated __initcall to arch_initcall.
- remove finish_arch_switch().
- IRQ cleanups by Thomas Gleixner.
- migrate to new 'set-state' interface.
- random small cleanups"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (148 commits)
MIPS: UAPI: Fix unrecognized opcode WSBH/DSBH/DSHD when using MIPS16.
MIPS: Fix alignment of quiet build output for vmlinuz link
MIPS: math-emu: Remove unused handle_dsemul function declaration
MIPS: math-emu: Add support for the MIPS R6 MAX{, A} FPU instruction
MIPS: math-emu: Add support for the MIPS R6 MIN{, A} FPU instruction
MIPS: math-emu: Add support for the MIPS R6 CLASS FPU instruction
MIPS: math-emu: Add support for the MIPS R6 RINT FPU instruction
MIPS: math-emu: Add support for the MIPS R6 MSUBF FPU instruction
MIPS: math-emu: Add support for the MIPS R6 MADDF FPU instruction
MIPS: math-emu: Add support for the MIPS R6 SELNEZ FPU instruction
MIPS: math-emu: Add support for the MIPS R6 SELEQZ FPU instruction
MIPS: math-emu: Add support for the CMP.condn.fmt R6 instruction
MIPS: inst.h: Add new MIPS R6 FPU opcodes
MIPS: Octeon: Fix management port MII address on Kontron S1901
MIPS: BCM47xx: Use kmemdup rather than duplicating its implementation
STAGING: Octeon: Use common helpers for determining interface and port
MIPS: Octeon: Support interfaces 4 and 5
MIPS: Octeon: Set up 1:1 mapping between CN68XX PKO queues and ports
MIPS: Octeon: Initialize CN68XX PKO
STAGING: Octeon: Support CN68XX style WQE
...
Diffstat (limited to 'drivers/irqchip')
-rw-r--r-- | drivers/irqchip/irq-mips-gic.c | 142 |
1 files changed, 94 insertions, 48 deletions
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index dae5914..1764bcf 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -41,20 +41,46 @@ static struct irq_chip gic_level_irq_controller, gic_edge_irq_controller; static void __gic_irq_dispatch(void); -static inline unsigned int gic_read(unsigned int reg) +static inline u32 gic_read32(unsigned int reg) { return __raw_readl(gic_base + reg); } -static inline void gic_write(unsigned int reg, unsigned int val) +static inline u64 gic_read64(unsigned int reg) { - __raw_writel(val, gic_base + reg); + return __raw_readq(gic_base + reg); } -static inline void gic_update_bits(unsigned int reg, unsigned int mask, - unsigned int val) +static inline unsigned long gic_read(unsigned int reg) { - unsigned int regval; + if (!mips_cm_is64) + return gic_read32(reg); + else + return gic_read64(reg); +} + +static inline void gic_write32(unsigned int reg, u32 val) +{ + return __raw_writel(val, gic_base + reg); +} + +static inline void gic_write64(unsigned int reg, u64 val) +{ + return __raw_writeq(val, gic_base + reg); +} + +static inline void gic_write(unsigned int reg, unsigned long val) +{ + if (!mips_cm_is64) + return gic_write32(reg, (u32)val); + else + return gic_write64(reg, (u64)val); +} + +static inline void gic_update_bits(unsigned int reg, unsigned long mask, + unsigned long val) +{ + unsigned long regval; regval = gic_read(reg); regval &= ~mask; @@ -65,40 +91,40 @@ static inline void gic_update_bits(unsigned int reg, unsigned int mask, static inline void gic_reset_mask(unsigned int intr) { gic_write(GIC_REG(SHARED, GIC_SH_RMASK) + GIC_INTR_OFS(intr), - 1 << GIC_INTR_BIT(intr)); + 1ul << GIC_INTR_BIT(intr)); } static inline void gic_set_mask(unsigned int intr) { gic_write(GIC_REG(SHARED, GIC_SH_SMASK) + GIC_INTR_OFS(intr), - 1 << GIC_INTR_BIT(intr)); + 1ul << GIC_INTR_BIT(intr)); } static inline void gic_set_polarity(unsigned int intr, unsigned int pol) { gic_update_bits(GIC_REG(SHARED, GIC_SH_SET_POLARITY) + - GIC_INTR_OFS(intr), 1 << GIC_INTR_BIT(intr), - pol << GIC_INTR_BIT(intr)); + GIC_INTR_OFS(intr), 1ul << GIC_INTR_BIT(intr), + (unsigned long)pol << GIC_INTR_BIT(intr)); } static inline void gic_set_trigger(unsigned int intr, unsigned int trig) { gic_update_bits(GIC_REG(SHARED, GIC_SH_SET_TRIGGER) + - GIC_INTR_OFS(intr), 1 << GIC_INTR_BIT(intr), - trig << GIC_INTR_BIT(intr)); + GIC_INTR_OFS(intr), 1ul << GIC_INTR_BIT(intr), + (unsigned long)trig << GIC_INTR_BIT(intr)); } static inline void gic_set_dual_edge(unsigned int intr, unsigned int dual) { gic_update_bits(GIC_REG(SHARED, GIC_SH_SET_DUAL) + GIC_INTR_OFS(intr), - 1 << GIC_INTR_BIT(intr), - dual << GIC_INTR_BIT(intr)); + 1ul << GIC_INTR_BIT(intr), + (unsigned long)dual << GIC_INTR_BIT(intr)); } static inline void gic_map_to_pin(unsigned int intr, unsigned int pin) { - gic_write(GIC_REG(SHARED, GIC_SH_INTR_MAP_TO_PIN_BASE) + - GIC_SH_MAP_TO_PIN(intr), GIC_MAP_TO_PIN_MSK | pin); + gic_write32(GIC_REG(SHARED, GIC_SH_INTR_MAP_TO_PIN_BASE) + + GIC_SH_MAP_TO_PIN(intr), GIC_MAP_TO_PIN_MSK | pin); } static inline void gic_map_to_vpe(unsigned int intr, unsigned int vpe) @@ -113,10 +139,13 @@ cycle_t gic_read_count(void) { unsigned int hi, hi2, lo; + if (mips_cm_is64) + return (cycle_t)gic_read(GIC_REG(SHARED, GIC_SH_COUNTER)); + do { - hi = gic_read(GIC_REG(SHARED, GIC_SH_COUNTER_63_32)); - lo = gic_read(GIC_REG(SHARED, GIC_SH_COUNTER_31_00)); - hi2 = gic_read(GIC_REG(SHARED, GIC_SH_COUNTER_63_32)); + hi = gic_read32(GIC_REG(SHARED, GIC_SH_COUNTER_63_32)); + lo = gic_read32(GIC_REG(SHARED, GIC_SH_COUNTER_31_00)); + hi2 = gic_read32(GIC_REG(SHARED, GIC_SH_COUNTER_63_32)); } while (hi2 != hi); return (((cycle_t) hi) << 32) + lo; @@ -135,10 +164,14 @@ unsigned int gic_get_count_width(void) void gic_write_compare(cycle_t cnt) { - gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI), - (int)(cnt >> 32)); - gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO), - (int)(cnt & 0xffffffff)); + if (mips_cm_is64) { + gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE), cnt); + } else { + gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI), + (int)(cnt >> 32)); + gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO), + (int)(cnt & 0xffffffff)); + } } void gic_write_cpu_compare(cycle_t cnt, int cpu) @@ -148,10 +181,15 @@ void gic_write_cpu_compare(cycle_t cnt, int cpu) local_irq_save(flags); gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), cpu); - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_HI), - (int)(cnt >> 32)); - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_LO), - (int)(cnt & 0xffffffff)); + + if (mips_cm_is64) { + gic_write(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE), cnt); + } else { + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_HI), + (int)(cnt >> 32)); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_LO), + (int)(cnt & 0xffffffff)); + } local_irq_restore(flags); } @@ -160,8 +198,11 @@ cycle_t gic_read_compare(void) { unsigned int hi, lo; - hi = gic_read(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI)); - lo = gic_read(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO)); + if (mips_cm_is64) + return (cycle_t)gic_read(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE)); + + hi = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI)); + lo = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO)); return (((cycle_t) hi) << 32) + lo; } @@ -196,7 +237,7 @@ static bool gic_local_irq_is_routable(int intr) if (cpu_has_veic) return true; - vpe_ctl = gic_read(GIC_REG(VPE_LOCAL, GIC_VPE_CTL)); + vpe_ctl = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_CTL)); switch (intr) { case GIC_LOCAL_INT_TIMER: return vpe_ctl & GIC_VPE_CTL_TIMER_RTBL_MSK; @@ -262,7 +303,7 @@ int gic_get_c0_fdc_int(void) static void gic_handle_shared_int(bool chained) { - unsigned int i, intr, virq; + unsigned int i, intr, virq, gic_reg_step = mips_cm_is64 ? 8 : 4; unsigned long *pcpu_mask; unsigned long pending_reg, intrmask_reg; DECLARE_BITMAP(pending, GIC_MAX_INTRS); @@ -277,8 +318,8 @@ static void gic_handle_shared_int(bool chained) for (i = 0; i < BITS_TO_LONGS(gic_shared_intrs); i++) { pending[i] = gic_read(pending_reg); intrmask[i] = gic_read(intrmask_reg); - pending_reg += 0x4; - intrmask_reg += 0x4; + pending_reg += gic_reg_step; + intrmask_reg += gic_reg_step; } bitmap_and(pending, pending, intrmask, gic_shared_intrs); @@ -425,8 +466,8 @@ static void gic_handle_local_int(bool chained) unsigned long pending, masked; unsigned int intr, virq; - pending = gic_read(GIC_REG(VPE_LOCAL, GIC_VPE_PEND)); - masked = gic_read(GIC_REG(VPE_LOCAL, GIC_VPE_MASK)); + pending = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_PEND)); + masked = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_MASK)); bitmap_and(&pending, &pending, &masked, GIC_NUM_LOCAL_INTRS); @@ -449,14 +490,14 @@ static void gic_mask_local_irq(struct irq_data *d) { int intr = GIC_HWIRQ_TO_LOCAL(d->hwirq); - gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_RMASK), 1 << intr); + gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_RMASK), 1 << intr); } static void gic_unmask_local_irq(struct irq_data *d) { int intr = GIC_HWIRQ_TO_LOCAL(d->hwirq); - gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_SMASK), 1 << intr); + gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_SMASK), 1 << intr); } static struct irq_chip gic_local_irq_controller = { @@ -474,7 +515,7 @@ static void gic_mask_local_irq_all_vpes(struct irq_data *d) spin_lock_irqsave(&gic_lock, flags); for (i = 0; i < gic_vpes; i++) { gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), i); - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_RMASK), 1 << intr); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_RMASK), 1 << intr); } spin_unlock_irqrestore(&gic_lock, flags); } @@ -488,7 +529,7 @@ static void gic_unmask_local_irq_all_vpes(struct irq_data *d) spin_lock_irqsave(&gic_lock, flags); for (i = 0; i < gic_vpes; i++) { gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), i); - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_SMASK), 1 << intr); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_SMASK), 1 << intr); } spin_unlock_irqrestore(&gic_lock, flags); } @@ -608,7 +649,7 @@ static void __init gic_basic_init(void) for (j = 0; j < GIC_NUM_LOCAL_INTRS; j++) { if (!gic_local_irq_is_routable(j)) continue; - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_RMASK), 1 << j); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_RMASK), 1 << j); } } } @@ -653,27 +694,32 @@ static int gic_local_irq_domain_map(struct irq_domain *d, unsigned int virq, switch (intr) { case GIC_LOCAL_INT_WD: - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_WD_MAP), val); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_WD_MAP), val); break; case GIC_LOCAL_INT_COMPARE: - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_MAP), val); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_MAP), + val); break; case GIC_LOCAL_INT_TIMER: /* CONFIG_MIPS_CMP workaround (see __gic_init) */ val = GIC_MAP_TO_PIN_MSK | timer_cpu_pin; - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_TIMER_MAP), val); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_TIMER_MAP), + val); break; case GIC_LOCAL_INT_PERFCTR: - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_PERFCTR_MAP), val); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_PERFCTR_MAP), + val); break; case GIC_LOCAL_INT_SWINT0: - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_SWINT0_MAP), val); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_SWINT0_MAP), + val); break; case GIC_LOCAL_INT_SWINT1: - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_SWINT1_MAP), val); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_SWINT1_MAP), + val); break; case GIC_LOCAL_INT_FDC: - gic_write(GIC_REG(VPE_OTHER, GIC_VPE_FDC_MAP), val); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_FDC_MAP), val); break; default: pr_err("Invalid local IRQ %d\n", intr); @@ -778,7 +824,7 @@ static void __init __gic_init(unsigned long gic_base_addr, */ if (IS_ENABLED(CONFIG_MIPS_CMP) && gic_local_irq_is_routable(GIC_LOCAL_INT_TIMER)) { - timer_cpu_pin = gic_read(GIC_REG(VPE_LOCAL, + timer_cpu_pin = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_TIMER_MAP)) & GIC_MAP_MSK; irq_set_chained_handler(MIPS_CPU_IRQ_BASE + |