diff options
Diffstat (limited to 'arch/mips/include/asm/netlogic/xlr/pic.h')
| -rw-r--r-- | arch/mips/include/asm/netlogic/xlr/pic.h | 123 |
1 files changed, 99 insertions, 24 deletions
diff --git a/arch/mips/include/asm/netlogic/xlr/pic.h b/arch/mips/include/asm/netlogic/xlr/pic.h index 5cceb746f08..3c80a75233b 100644 --- a/arch/mips/include/asm/netlogic/xlr/pic.h +++ b/arch/mips/include/asm/netlogic/xlr/pic.h @@ -35,10 +35,13 @@ #ifndef _ASM_NLM_XLR_PIC_H #define _ASM_NLM_XLR_PIC_H -#define PIC_CLKS_PER_SEC 66666666ULL +#define PIC_CLK_HZ 66666666 +#define pic_timer_freq() PIC_CLK_HZ + /* PIC hardware interrupt numbers */ #define PIC_IRT_WD_INDEX 0 #define PIC_IRT_TIMER_0_INDEX 1 +#define PIC_IRT_TIMER_INDEX(i) ((i) + PIC_IRT_TIMER_0_INDEX) #define PIC_IRT_TIMER_1_INDEX 2 #define PIC_IRT_TIMER_2_INDEX 3 #define PIC_IRT_TIMER_3_INDEX 4 @@ -99,6 +102,7 @@ /* PIC Registers */ #define PIC_CTRL 0x00 +#define PIC_CTRL_STE 8 /* timer enable start bit */ #define PIC_IPI 0x04 #define PIC_INT_ACK 0x06 @@ -116,7 +120,7 @@ #define PIC_TIMER_COUNT_0_BASE 0x120 #define PIC_TIMER_COUNT_1_BASE 0x130 -#define PIC_IRT_0(picintr) (PIC_IRT_0_BASE + (picintr)) +#define PIC_IRT_0(picintr) (PIC_IRT_0_BASE + (picintr)) #define PIC_IRT_1(picintr) (PIC_IRT_1_BASE + (picintr)) #define PIC_TIMER_MAXVAL_0(i) (PIC_TIMER_MAXVAL_0_BASE + (i)) @@ -130,9 +134,9 @@ * 8-39. This leaves the IRQ 0-7 for cpu interrupts like * count/compare and FMN */ -#define PIC_IRQ_BASE 8 -#define PIC_INTR_TO_IRQ(i) (PIC_IRQ_BASE + (i)) -#define PIC_IRQ_TO_INTR(i) ((i) - PIC_IRQ_BASE) +#define PIC_IRQ_BASE 8 +#define PIC_INTR_TO_IRQ(i) (PIC_IRQ_BASE + (i)) +#define PIC_IRQ_TO_INTR(i) ((i) - PIC_IRQ_BASE) #define PIC_IRT_FIRST_IRQ PIC_IRQ_BASE #define PIC_WD_IRQ PIC_INTR_TO_IRQ(PIC_IRT_WD_INDEX) @@ -168,7 +172,7 @@ #define PIC_BRIDGE_AERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_AERR_INDEX) #define PIC_BRIDGE_BERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_BERR_INDEX) #define PIC_BRIDGE_TB_XLR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_TB_XLR_INDEX) -#define PIC_BRIDGE_AERR_NMI_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_AERR_NMI_INDEX) +#define PIC_BRIDGE_AERR_NMI_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_AERR_NMI_INDEX) /* XLS defines */ #define PIC_GMAC_4_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC4_INDEX) #define PIC_GMAC_5_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC5_INDEX) @@ -193,39 +197,110 @@ /* end XLS */ #ifndef __ASSEMBLY__ -static inline void pic_send_ipi(u32 ipi) + +#define PIC_IRQ_IS_EDGE_TRIGGERED(irq) (((irq) >= PIC_TIMER_0_IRQ) && \ + ((irq) <= PIC_TIMER_7_IRQ)) +#define PIC_IRQ_IS_IRT(irq) (((irq) >= PIC_IRT_FIRST_IRQ) && \ + ((irq) <= PIC_IRT_LAST_IRQ)) + +static inline int +nlm_irq_to_irt(int irq) { - nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET); + if (PIC_IRQ_IS_IRT(irq) == 0) + return -1; - netlogic_write_reg(mmio, PIC_IPI, ipi); + return PIC_IRQ_TO_INTR(irq); } -static inline u32 pic_read_control(void) +static inline int +nlm_irt_to_irq(int irt) { - nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET); - return netlogic_read_reg(mmio, PIC_CTRL); + return PIC_INTR_TO_IRQ(irt); } -static inline void pic_write_control(u32 control) +static inline void +nlm_pic_enable_irt(uint64_t base, int irt) { - nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET); + uint32_t reg; - netlogic_write_reg(mmio, PIC_CTRL, control); + reg = nlm_read_reg(base, PIC_IRT_1(irt)); + nlm_write_reg(base, PIC_IRT_1(irt), reg | (1u << 31)); } -static inline void pic_update_control(u32 control) +static inline void +nlm_pic_disable_irt(uint64_t base, int irt) { - nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET); + uint32_t reg; - netlogic_write_reg(mmio, PIC_CTRL, - (control | netlogic_read_reg(mmio, PIC_CTRL))); + reg = nlm_read_reg(base, PIC_IRT_1(irt)); + nlm_write_reg(base, PIC_IRT_1(irt), reg & ~(1u << 31)); } -#define PIC_IRQ_IS_EDGE_TRIGGERED(irq) (((irq) >= PIC_TIMER_0_IRQ) && \ - ((irq) <= PIC_TIMER_7_IRQ)) -#define PIC_IRQ_IS_IRT(irq) (((irq) >= PIC_IRT_FIRST_IRQ) && \ - ((irq) <= PIC_IRT_LAST_IRQ)) -#endif +static inline void +nlm_pic_send_ipi(uint64_t base, int hwt, int irq, int nmi) +{ + unsigned int tid, pid; + + tid = hwt & 0x3; + pid = (hwt >> 2) & 0x07; + nlm_write_reg(base, PIC_IPI, + (pid << 20) | (tid << 16) | (nmi << 8) | irq); +} + +static inline void +nlm_pic_ack(uint64_t base, int irt) +{ + nlm_write_reg(base, PIC_INT_ACK, 1u << irt); +} +static inline void +nlm_pic_init_irt(uint64_t base, int irt, int irq, int hwt, int en) +{ + nlm_write_reg(base, PIC_IRT_0(irt), (1u << hwt)); + /* local scheduling, invalid, level by default */ + nlm_write_reg(base, PIC_IRT_1(irt), + (en << 30) | (1 << 6) | irq); +} + +static inline uint64_t +nlm_pic_read_timer(uint64_t base, int timer) +{ + uint32_t up1, up2, low; + + up1 = nlm_read_reg(base, PIC_TIMER_COUNT_1(timer)); + low = nlm_read_reg(base, PIC_TIMER_COUNT_0(timer)); + up2 = nlm_read_reg(base, PIC_TIMER_COUNT_1(timer)); + + if (up1 != up2) /* wrapped, get the new low */ + low = nlm_read_reg(base, PIC_TIMER_COUNT_0(timer)); + return ((uint64_t)up2 << 32) | low; + +} + +static inline uint32_t +nlm_pic_read_timer32(uint64_t base, int timer) +{ + return nlm_read_reg(base, PIC_TIMER_COUNT_0(timer)); +} + +static inline void +nlm_pic_set_timer(uint64_t base, int timer, uint64_t value, int irq, int cpu) +{ + uint32_t up, low; + uint64_t pic_ctrl = nlm_read_reg(base, PIC_CTRL); + int en; + + en = (irq > 0); + up = value >> 32; + low = value & 0xFFFFFFFF; + nlm_write_reg(base, PIC_TIMER_MAXVAL_0(timer), low); + nlm_write_reg(base, PIC_TIMER_MAXVAL_1(timer), up); + nlm_pic_init_irt(base, PIC_IRT_TIMER_INDEX(timer), irq, cpu, 0); + + /* enable the timer */ + pic_ctrl |= (1 << (PIC_CTRL_STE + timer)); + nlm_write_reg(base, PIC_CTRL, pic_ctrl); +} +#endif #endif /* _ASM_NLM_XLR_PIC_H */ |