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author | Michael Ellerman <mpe@ellerman.id.au> | 2017-05-09 22:54:35 +1000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-05-09 22:54:35 +1000 |
commit | 0b382fb3d905e2754302cf9097ffca13afb8b73f (patch) | |
tree | b70fdbe056761d4186cd0c9fe7707b9910617bcc /arch/powerpc | |
parent | 6102c005a71b4a7a6433d43b887662fb0780746d (diff) | |
parent | 61baf15555129f69720334f232b153890895ef71 (diff) | |
download | linux-0b382fb3d905e2754302cf9097ffca13afb8b73f.tar.gz linux-0b382fb3d905e2754302cf9097ffca13afb8b73f.tar.xz |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next
Freescale updates from Scott:
"Includes a fix for a powerpc/next mm regression on 64e, a fix for a
kernel hang on 64e when using a debugger inside a relocated kernel, a
qman fix, and misc qe improvements."
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/include/asm/cpm1.h | 2 | ||||
-rw-r--r-- | arch/powerpc/include/asm/processor.h | 5 | ||||
-rw-r--r-- | arch/powerpc/kernel/exceptions-64e.S | 12 | ||||
-rw-r--r-- | arch/powerpc/sysdev/cpm1.c | 25 |
4 files changed, 44 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/cpm1.h b/arch/powerpc/include/asm/cpm1.h index 8ee4211ca0c6..14ad37865000 100644 --- a/arch/powerpc/include/asm/cpm1.h +++ b/arch/powerpc/include/asm/cpm1.h @@ -560,6 +560,8 @@ typedef struct risc_timer_pram { #define CPM_PIN_SECONDARY 2 #define CPM_PIN_GPIO 4 #define CPM_PIN_OPENDRAIN 8 +#define CPM_PIN_FALLEDGE 16 +#define CPM_PIN_ANYEDGE 0 enum cpm_port { CPM_PORTA, diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index a4b1d8d6b793..a2123f291ab0 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -151,8 +151,13 @@ void release_thread(struct task_struct *); #ifdef __powerpc64__ +#ifdef CONFIG_PPC_BOOK3S_64 /* Limit stack to 128TB */ #define STACK_TOP_USER64 TASK_SIZE_128TB +#else +#define STACK_TOP_USER64 TASK_SIZE_USER64 +#endif + #define STACK_TOP_USER32 TASK_SIZE_USER32 #define STACK_TOP (is_32bit_task() ? \ diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 45b453e4d0c8..acd8ca76233e 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -735,8 +735,14 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) andis. r15,r14,(DBSR_IC|DBSR_BT)@h beq+ 1f +#ifdef CONFIG_RELOCATABLE + ld r15,PACATOC(r13) + ld r14,interrupt_base_book3e@got(r15) + ld r15,__end_interrupts@got(r15) +#else LOAD_REG_IMMEDIATE(r14,interrupt_base_book3e) LOAD_REG_IMMEDIATE(r15,__end_interrupts) +#endif cmpld cr0,r10,r14 cmpld cr1,r10,r15 blt+ cr0,1f @@ -799,8 +805,14 @@ kernel_dbg_exc: andis. r15,r14,(DBSR_IC|DBSR_BT)@h beq+ 1f +#ifdef CONFIG_RELOCATABLE + ld r15,PACATOC(r13) + ld r14,interrupt_base_book3e@got(r15) + ld r15,__end_interrupts@got(r15) +#else LOAD_REG_IMMEDIATE(r14,interrupt_base_book3e) LOAD_REG_IMMEDIATE(r15,__end_interrupts) +#endif cmpld cr0,r10,r14 cmpld cr1,r10,r15 blt+ cr0,1f diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c index 986cd111d4df..c651e668996b 100644 --- a/arch/powerpc/sysdev/cpm1.c +++ b/arch/powerpc/sysdev/cpm1.c @@ -377,6 +377,10 @@ static void cpm1_set_pin16(int port, int pin, int flags) setbits16(&iop->odr_sor, pin); else clrbits16(&iop->odr_sor, pin); + if (flags & CPM_PIN_FALLEDGE) + setbits16(&iop->intr, pin); + else + clrbits16(&iop->intr, pin); } } @@ -528,6 +532,9 @@ struct cpm1_gpio16_chip { /* shadowed data register to clear/set bits safely */ u16 cpdata; + + /* IRQ associated with Pins when relevant */ + int irq[16]; }; static void cpm1_gpio16_save_regs(struct of_mm_gpio_chip *mm_gc) @@ -578,6 +585,14 @@ static void cpm1_gpio16_set(struct gpio_chip *gc, unsigned int gpio, int value) spin_unlock_irqrestore(&cpm1_gc->lock, flags); } +static int cpm1_gpio16_to_irq(struct gpio_chip *gc, unsigned int gpio) +{ + struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); + struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc); + + return cpm1_gc->irq[gpio] ? : -ENXIO; +} + static int cpm1_gpio16_dir_out(struct gpio_chip *gc, unsigned int gpio, int val) { struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); @@ -618,6 +633,7 @@ int cpm1_gpiochip_add16(struct device_node *np) struct cpm1_gpio16_chip *cpm1_gc; struct of_mm_gpio_chip *mm_gc; struct gpio_chip *gc; + u16 mask; cpm1_gc = kzalloc(sizeof(*cpm1_gc), GFP_KERNEL); if (!cpm1_gc) @@ -625,6 +641,14 @@ int cpm1_gpiochip_add16(struct device_node *np) spin_lock_init(&cpm1_gc->lock); + if (!of_property_read_u16(np, "fsl,cpm1-gpio-irq-mask", &mask)) { + int i, j; + + for (i = 0, j = 0; i < 16; i++) + if (mask & (1 << (15 - i))) + cpm1_gc->irq[i] = irq_of_parse_and_map(np, j++); + } + mm_gc = &cpm1_gc->mm_gc; gc = &mm_gc->gc; @@ -634,6 +658,7 @@ int cpm1_gpiochip_add16(struct device_node *np) gc->direction_output = cpm1_gpio16_dir_out; gc->get = cpm1_gpio16_get; gc->set = cpm1_gpio16_set; + gc->to_irq = cpm1_gpio16_to_irq; return of_mm_gpiochip_add_data(np, mm_gc, cpm1_gc); } |