diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
commit | 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch) | |
tree | e9891aa6c295060d065adffd610c4f49ecf884f3 /arch/nios2/kernel | |
parent | a71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff) |
Linux-libre 4.3.2-gnu
Diffstat (limited to 'arch/nios2/kernel')
-rw-r--r-- | arch/nios2/kernel/misaligned.c | 20 | ||||
-rw-r--r-- | arch/nios2/kernel/time.c | 49 |
2 files changed, 30 insertions, 39 deletions
diff --git a/arch/nios2/kernel/misaligned.c b/arch/nios2/kernel/misaligned.c index 4e5907a0c..23e0544e1 100644 --- a/arch/nios2/kernel/misaligned.c +++ b/arch/nios2/kernel/misaligned.c @@ -32,8 +32,6 @@ #define INST_STW 0x15 #define INST_LDW 0x17 -static unsigned long ma_user, ma_kern, ma_skipped, ma_half, ma_word; - static unsigned int ma_usermode; #define UM_WARN 0x01 #define UM_FIXUP 0x02 @@ -53,7 +51,6 @@ static int reg_offsets[32]; static inline u32 get_reg_val(struct pt_regs *fp, int reg) { u8 *p = ((u8 *)fp) + reg_offsets[reg]; - return *(u32 *)p; } @@ -71,14 +68,13 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) u32 isn, addr, val; int in_kernel; u8 a, b, d0, d1, d2, d3; - u16 imm16; + s16 imm16; unsigned int fault; /* back up one instruction */ fp->ea -= 4; if (fixup_exception(fp)) { - ma_skipped++; return; } @@ -103,18 +99,11 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) fault |= __get_user(d1, (u8 *)(addr+1)); val = (d1 << 8) | d0; put_reg_val(fp, b, val); - ma_half++; break; case INST_STH: val = get_reg_val(fp, b); d1 = val >> 8; d0 = val >> 0; - - pr_debug("sth: ra=%d (%08x) rb=%d (%08x), imm16 %04x addr %08x val %08x\n", - a, get_reg_val(fp, a), - b, get_reg_val(fp, b), - imm16, addr, val); - if (in_kernel) { *(u8 *)(addr+0) = d0; *(u8 *)(addr+1) = d1; @@ -122,14 +111,12 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) fault |= __put_user(d0, (u8 *)(addr+0)); fault |= __put_user(d1, (u8 *)(addr+1)); } - ma_half++; break; case INST_LDH: fault |= __get_user(d0, (u8 *)(addr+0)); fault |= __get_user(d1, (u8 *)(addr+1)); val = (short)((d1 << 8) | d0); put_reg_val(fp, b, val); - ma_half++; break; case INST_STW: val = get_reg_val(fp, b); @@ -148,7 +135,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) fault |= __put_user(d2, (u8 *)(addr+2)); fault |= __put_user(d3, (u8 *)(addr+3)); } - ma_word++; break; case INST_LDW: fault |= __get_user(d0, (u8 *)(addr+0)); @@ -157,7 +143,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) fault |= __get_user(d3, (u8 *)(addr+3)); val = (d3 << 24) | (d2 << 16) | (d1 << 8) | d0; put_reg_val(fp, b, val); - ma_word++; break; } } @@ -186,7 +171,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) * note exception and skip bad instruction (return) */ if (in_kernel) { - ma_kern++; fp->ea += 4; if (ma_usermode & KM_WARN) { @@ -200,8 +184,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) return; } - ma_user++; - /* * user mode - * possibly warn, diff --git a/arch/nios2/kernel/time.c b/arch/nios2/kernel/time.c index 9e3cc8a40..bbc3f9157 100644 --- a/arch/nios2/kernel/time.c +++ b/arch/nios2/kernel/time.c @@ -130,7 +130,7 @@ static void nios2_timer_stop(struct nios2_timer *timer) } static void nios2_timer_config(struct nios2_timer *timer, unsigned long period, - enum clock_event_mode mode) + bool periodic) { u16 ctrl; @@ -148,7 +148,7 @@ static void nios2_timer_config(struct nios2_timer *timer, unsigned long period, timer_writew(timer, period >> 16, ALTERA_TIMER_PERIODH_REG); ctrl |= ALTERA_TIMER_CONTROL_START_MSK | ALTERA_TIMER_CONTROL_ITO_MSK; - if (mode == CLOCK_EVT_MODE_PERIODIC) + if (periodic) ctrl |= ALTERA_TIMER_CONTROL_CONT_MSK; else ctrl &= ~ALTERA_TIMER_CONTROL_CONT_MSK; @@ -160,32 +160,38 @@ static int nios2_timer_set_next_event(unsigned long delta, { struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt); - nios2_timer_config(&nios2_ced->timer, delta, evt->mode); + nios2_timer_config(&nios2_ced->timer, delta, false); return 0; } -static void nios2_timer_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) +static int nios2_timer_shutdown(struct clock_event_device *evt) +{ + struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt); + struct nios2_timer *timer = &nios2_ced->timer; + + nios2_timer_stop(timer); + return 0; +} + +static int nios2_timer_set_periodic(struct clock_event_device *evt) { unsigned long period; struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt); struct nios2_timer *timer = &nios2_ced->timer; - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - period = DIV_ROUND_UP(timer->freq, HZ); - nios2_timer_config(timer, period, CLOCK_EVT_MODE_PERIODIC); - break; - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - nios2_timer_stop(timer); - break; - case CLOCK_EVT_MODE_RESUME: - nios2_timer_start(timer); - break; - } + period = DIV_ROUND_UP(timer->freq, HZ); + nios2_timer_config(timer, period, true); + return 0; +} + +static int nios2_timer_resume(struct clock_event_device *evt) +{ + struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt); + struct nios2_timer *timer = &nios2_ced->timer; + + nios2_timer_start(timer); + return 0; } irqreturn_t timer_interrupt(int irq, void *dev_id) @@ -218,7 +224,10 @@ static struct nios2_clockevent_dev nios2_ce = { .rating = 250, .shift = 32, .set_next_event = nios2_timer_set_next_event, - .set_mode = nios2_timer_set_mode, + .set_state_shutdown = nios2_timer_shutdown, + .set_state_periodic = nios2_timer_set_periodic, + .set_state_oneshot = nios2_timer_shutdown, + .tick_resume = nios2_timer_resume, }, }; 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