diff options
Diffstat (limited to 'arch/m68knommu/platform/coldfire')
| -rw-r--r-- | arch/m68knommu/platform/coldfire/dma.c | 8 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/entry.S | 1 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/head.S | 10 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/intc-2.c | 176 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/intc-simr.c | 165 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/intc.c | 20 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/pit.c | 2 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/timers.c | 4 |
8 files changed, 293 insertions, 93 deletions
diff --git a/arch/m68knommu/platform/coldfire/dma.c b/arch/m68knommu/platform/coldfire/dma.c index 2b30cf1b8f7..e88b95e2cc6 100644 --- a/arch/m68knommu/platform/coldfire/dma.c +++ b/arch/m68knommu/platform/coldfire/dma.c @@ -21,16 +21,16 @@ */ unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { #ifdef MCFDMA_BASE0 - MCF_MBAR + MCFDMA_BASE0, + MCFDMA_BASE0, #endif #ifdef MCFDMA_BASE1 - MCF_MBAR + MCFDMA_BASE1, + MCFDMA_BASE1, #endif #ifdef MCFDMA_BASE2 - MCF_MBAR + MCFDMA_BASE2, + MCFDMA_BASE2, #endif #ifdef MCFDMA_BASE3 - MCF_MBAR + MCFDMA_BASE3, + MCFDMA_BASE3, #endif }; diff --git a/arch/m68knommu/platform/coldfire/entry.S b/arch/m68knommu/platform/coldfire/entry.S index 4ddfc3da70d..5837cf080b6 100644 --- a/arch/m68knommu/platform/coldfire/entry.S +++ b/arch/m68knommu/platform/coldfire/entry.S @@ -138,7 +138,6 @@ Luser_return: andl #-THREAD_SIZE,%d1 /* at base of kernel stack */ movel %d1,%a0 movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ - andl #0xefff,%d1 jne Lwork_to_do /* still work to do */ Lreturn: diff --git a/arch/m68knommu/platform/coldfire/head.S b/arch/m68knommu/platform/coldfire/head.S index d5977909ae5..129bff4956b 100644 --- a/arch/m68knommu/platform/coldfire/head.S +++ b/arch/m68knommu/platform/coldfire/head.S @@ -41,17 +41,17 @@ * DRAM controller is quite different. */ .macro GET_MEM_SIZE - movel MCF_MBAR+MCFSIM_DMR0,%d0 /* get mask for 1st bank */ + movel MCFSIM_DMR0,%d0 /* get mask for 1st bank */ btst #0,%d0 /* check if region enabled */ beq 1f andl #0xfffc0000,%d0 beq 1f addl #0x00040000,%d0 /* convert mask to size */ 1: - movel MCF_MBAR+MCFSIM_DMR1,%d1 /* get mask for 2nd bank */ + movel MCFSIM_DMR1,%d1 /* get mask for 2nd bank */ btst #0,%d1 /* check if region enabled */ beq 2f - andl #0xfffc0000, %d1 + andl #0xfffc0000,%d1 beq 2f addl #0x00040000,%d1 addl %d1,%d0 /* total mem size in d0 */ @@ -68,14 +68,14 @@ #elif defined(CONFIG_M520x) .macro GET_MEM_SIZE clrl %d0 - movel MCF_MBAR+MCFSIM_SDCS0, %d2 /* Get SDRAM chip select 0 config */ + movel MCFSIM_SDCS0, %d2 /* Get SDRAM chip select 0 config */ andl #0x1f, %d2 /* Get only the chip select size */ beq 3f /* Check if it is enabled */ addql #1, %d2 /* Form exponent */ moveql #1, %d0 lsll %d2, %d0 /* 2 ^ exponent */ 3: - movel MCF_MBAR+MCFSIM_SDCS1, %d2 /* Get SDRAM chip select 1 config */ + movel MCFSIM_SDCS1, %d2 /* Get SDRAM chip select 1 config */ andl #0x1f, %d2 /* Get only the chip select size */ beq 4f /* Check if it is enabled */ addql #1, %d2 /* Form exponent */ diff --git a/arch/m68knommu/platform/coldfire/intc-2.c b/arch/m68knommu/platform/coldfire/intc-2.c index 85daa2b3001..2cbfbf035db 100644 --- a/arch/m68knommu/platform/coldfire/intc-2.c +++ b/arch/m68knommu/platform/coldfire/intc-2.c @@ -7,7 +7,10 @@ * family, the 5270, 5271, 5274, 5275, and the 528x family which have two such * controllers, and the 547x and 548x families which have only one of them. * - * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com> + * The external 7 fixed interrupts are part the the Edge Port unit of these + * ColdFire parts. They can be configured as level or edge triggered. + * + * (C) Copyright 2009-2011, Greg Ungerer <gerg@snapgear.com> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive @@ -31,11 +34,12 @@ #define MCFSIM_ICR_PRI(p) (p) /* Priority p intr */ /* - * Each vector needs a unique priority and level associated with it. - * We don't really care so much what they are, we don't rely on the - * traditional priority interrupt scheme of the m68k/ColdFire. + * The EDGE Port interrupts are the fixed 7 external interrupts. + * They need some special treatment, for example they need to be acked. */ -static u8 intc_intpri = MCFSIM_ICR_LEVEL(6) | MCFSIM_ICR_PRI(6); +#define EINT0 64 /* Is not actually used, but spot reserved for it */ +#define EINT1 65 /* EDGE Port interrupt 1 */ +#define EINT7 71 /* EDGE Port interrupt 7 */ #ifdef MCFICM_INTC1 #define NR_VECS 128 @@ -43,66 +47,147 @@ static u8 intc_intpri = MCFSIM_ICR_LEVEL(6) | MCFSIM_ICR_PRI(6); #define NR_VECS 64 #endif -static void intc_irq_mask(unsigned int irq) +static void intc_irq_mask(struct irq_data *d) { - if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + NR_VECS)) { - unsigned long imraddr; - u32 val, imrbit; + unsigned int irq = d->irq - MCFINT_VECBASE; + unsigned long imraddr; + u32 val, imrbit; - irq -= MCFINT_VECBASE; - imraddr = MCF_IPSBAR; #ifdef MCFICM_INTC1 - imraddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; + imraddr = (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; #else - imraddr += MCFICM_INTC0; + imraddr = MCFICM_INTC0; #endif - imraddr += (irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL; - imrbit = 0x1 << (irq & 0x1f); + imraddr += (irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL; + imrbit = 0x1 << (irq & 0x1f); - val = __raw_readl(imraddr); - __raw_writel(val | imrbit, imraddr); - } + val = __raw_readl(imraddr); + __raw_writel(val | imrbit, imraddr); +} + +static void intc_irq_unmask(struct irq_data *d) +{ + unsigned int irq = d->irq - MCFINT_VECBASE; + unsigned long imraddr; + u32 val, imrbit; + +#ifdef MCFICM_INTC1 + imraddr = (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; +#else + imraddr = MCFICM_INTC0; +#endif + imraddr += ((irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL); + imrbit = 0x1 << (irq & 0x1f); + + /* Don't set the "maskall" bit! */ + if ((irq & 0x20) == 0) + imrbit |= 0x1; + + val = __raw_readl(imraddr); + __raw_writel(val & ~imrbit, imraddr); +} + +/* + * Only the external (or EDGE Port) interrupts need to be acknowledged + * here, as part of the IRQ handler. They only really need to be ack'ed + * if they are in edge triggered mode, but there is no harm in doing it + * for all types. + */ +static void intc_irq_ack(struct irq_data *d) +{ + unsigned int irq = d->irq; + + __raw_writeb(0x1 << (irq - EINT0), MCFEPORT_EPFR); } -static void intc_irq_unmask(unsigned int irq) +/* + * Each vector needs a unique priority and level associated with it. + * We don't really care so much what they are, we don't rely on the + * traditional priority interrupt scheme of the m68k/ColdFire. This + * only needs to be set once for an interrupt, and we will never change + * these values once we have set them. + */ +static u8 intc_intpri = MCFSIM_ICR_LEVEL(6) | MCFSIM_ICR_PRI(6); + +static unsigned int intc_irq_startup(struct irq_data *d) { - if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + NR_VECS)) { - unsigned long intaddr, imraddr, icraddr; - u32 val, imrbit; + unsigned int irq = d->irq - MCFINT_VECBASE; + unsigned long icraddr; - irq -= MCFINT_VECBASE; - intaddr = MCF_IPSBAR; #ifdef MCFICM_INTC1 - intaddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; + icraddr = (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; #else - intaddr += MCFICM_INTC0; + icraddr = MCFICM_INTC0; #endif - imraddr = intaddr + ((irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL); - icraddr = intaddr + MCFINTC_ICR0 + (irq & 0x3f); - imrbit = 0x1 << (irq & 0x1f); + icraddr += MCFINTC_ICR0 + (irq & 0x3f); + if (__raw_readb(icraddr) == 0) + __raw_writeb(intc_intpri--, icraddr); - /* Don't set the "maskall" bit! */ - if ((irq & 0x20) == 0) - imrbit |= 0x1; + irq = d->irq; + if ((irq >= EINT1) && (irq <= EINT7)) { + u8 v; - if (__raw_readb(icraddr) == 0) - __raw_writeb(intc_intpri--, icraddr); + irq -= EINT0; - val = __raw_readl(imraddr); - __raw_writel(val & ~imrbit, imraddr); + /* Set EPORT line as input */ + v = __raw_readb(MCFEPORT_EPDDR); + __raw_writeb(v & ~(0x1 << irq), MCFEPORT_EPDDR); + + /* Set EPORT line as interrupt source */ + v = __raw_readb(MCFEPORT_EPIER); + __raw_writeb(v | (0x1 << irq), MCFEPORT_EPIER); } + + intc_irq_unmask(d); + return 0; } -static int intc_irq_set_type(unsigned int irq, unsigned int type) +static int intc_irq_set_type(struct irq_data *d, unsigned int type) { + unsigned int irq = d->irq; + u16 pa, tb; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + tb = 0x1; + break; + case IRQ_TYPE_EDGE_FALLING: + tb = 0x2; + break; + case IRQ_TYPE_EDGE_BOTH: + tb = 0x3; + break; + default: + /* Level triggered */ + tb = 0; + break; + } + + if (tb) + set_irq_handler(irq, handle_edge_irq); + + irq -= EINT0; + pa = __raw_readw(MCFEPORT_EPPAR); + pa = (pa & ~(0x3 << (irq * 2))) | (tb << (irq * 2)); + __raw_writew(pa, MCFEPORT_EPPAR); + return 0; } static struct irq_chip intc_irq_chip = { .name = "CF-INTC", - .mask = intc_irq_mask, - .unmask = intc_irq_unmask, - .set_type = intc_irq_set_type, + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, +}; + +static struct irq_chip intc_irq_chip_edge_port = { + .name = "CF-INTC-EP", + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_ack = intc_irq_ack, + .irq_set_type = intc_irq_set_type, }; void __init init_IRQ(void) @@ -112,13 +197,16 @@ void __init init_IRQ(void) init_vectors(); /* Mask all interrupt sources */ - __raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL); + __raw_writel(0x1, MCFICM_INTC0 + MCFINTC_IMRL); #ifdef MCFICM_INTC1 - __raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC1 + MCFINTC_IMRL); + __raw_writel(0x1, MCFICM_INTC1 + MCFINTC_IMRL); #endif - for (irq = 0; (irq < NR_IRQS); irq++) { - set_irq_chip(irq, &intc_irq_chip); + for (irq = MCFINT_VECBASE; (irq < MCFINT_VECBASE + NR_VECS); irq++) { + if ((irq >= EINT1) && (irq <=EINT7)) + set_irq_chip(irq, &intc_irq_chip_edge_port); + else + set_irq_chip(irq, &intc_irq_chip); set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH); set_irq_handler(irq, handle_level_irq); } diff --git a/arch/m68knommu/platform/coldfire/intc-simr.c b/arch/m68knommu/platform/coldfire/intc-simr.c index bb704863614..e642b24ab72 100644 --- a/arch/m68knommu/platform/coldfire/intc-simr.c +++ b/arch/m68knommu/platform/coldfire/intc-simr.c @@ -3,7 +3,7 @@ * * Interrupt controller code for the ColdFire 5208, 5207 & 532x parts. * - * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com> + * (C) Copyright 2009-2011, Greg Ungerer <gerg@snapgear.com> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive @@ -20,47 +20,156 @@ #include <asm/mcfsim.h> #include <asm/traps.h> -static void intc_irq_mask(unsigned int irq) +/* + * The EDGE Port interrupts are the fixed 7 external interrupts. + * They need some special treatment, for example they need to be acked. + */ +#ifdef CONFIG_M520x +/* + * The 520x parts only support a limited range of these external + * interrupts, only 1, 4 and 7 (as interrupts 65, 66 and 67). + */ +#define EINT0 64 /* Is not actually used, but spot reserved for it */ +#define EINT1 65 /* EDGE Port interrupt 1 */ +#define EINT4 66 /* EDGE Port interrupt 4 */ +#define EINT7 67 /* EDGE Port interrupt 7 */ + +static unsigned int irqebitmap[] = { 0, 1, 4, 7 }; +static unsigned int inline irq2ebit(unsigned int irq) { - if (irq >= MCFINT_VECBASE) { - if (irq < MCFINT_VECBASE + 64) - __raw_writeb(irq - MCFINT_VECBASE, MCFINTC0_SIMR); - else if ((irq < MCFINT_VECBASE + 128) && MCFINTC1_SIMR) - __raw_writeb(irq - MCFINT_VECBASE - 64, MCFINTC1_SIMR); - } + return irqebitmap[irq - EINT0]; +} + +#else + +/* + * Most of the ColdFire parts with the EDGE Port module just have + * a strait direct mapping of the 7 external interrupts. Although + * there is a bit reserved for 0, it is not used. + */ +#define EINT0 64 /* Is not actually used, but spot reserved for it */ +#define EINT1 65 /* EDGE Port interrupt 1 */ +#define EINT7 71 /* EDGE Port interrupt 7 */ + +static unsigned int inline irq2ebit(unsigned int irq) +{ + return irq - EINT0; +} + +#endif + +/* + * There maybe one or two interrupt control units, each has 64 + * interrupts. If there is no second unit then MCFINTC1_* defines + * will be 0 (and code for them optimized away). + */ + +static void intc_irq_mask(struct irq_data *d) +{ + unsigned int irq = d->irq - MCFINT_VECBASE; + + if (MCFINTC1_SIMR && (irq > 64)) + __raw_writeb(irq - 64, MCFINTC1_SIMR); + else + __raw_writeb(irq, MCFINTC0_SIMR); } -static void intc_irq_unmask(unsigned int irq) +static void intc_irq_unmask(struct irq_data *d) { - if (irq >= MCFINT_VECBASE) { - if (irq < MCFINT_VECBASE + 64) - __raw_writeb(irq - MCFINT_VECBASE, MCFINTC0_CIMR); - else if ((irq < MCFINT_VECBASE + 128) && MCFINTC1_CIMR) - __raw_writeb(irq - MCFINT_VECBASE - 64, MCFINTC1_CIMR); + unsigned int irq = d->irq - MCFINT_VECBASE; + + if (MCFINTC1_CIMR && (irq > 64)) + __raw_writeb(irq - 64, MCFINTC1_CIMR); + else + __raw_writeb(irq, MCFINTC0_CIMR); +} + +static void intc_irq_ack(struct irq_data *d) +{ + unsigned int ebit = irq2ebit(d->irq); + + __raw_writeb(0x1 << ebit, MCFEPORT_EPFR); +} + +static unsigned int intc_irq_startup(struct irq_data *d) +{ + unsigned int irq = d->irq; + + if ((irq >= EINT1) && (irq <= EINT7)) { + unsigned int ebit = irq2ebit(irq); + u8 v; + + /* Set EPORT line as input */ + v = __raw_readb(MCFEPORT_EPDDR); + __raw_writeb(v & ~(0x1 << ebit), MCFEPORT_EPDDR); + + /* Set EPORT line as interrupt source */ + v = __raw_readb(MCFEPORT_EPIER); + __raw_writeb(v | (0x1 << ebit), MCFEPORT_EPIER); } + + irq -= MCFINT_VECBASE; + if (MCFINTC1_ICR0 && (irq > 64)) + __raw_writeb(5, MCFINTC1_ICR0 + irq - 64); + else + __raw_writeb(5, MCFINTC0_ICR0 + irq); + + + intc_irq_unmask(d); + return 0; } -static int intc_irq_set_type(unsigned int irq, unsigned int type) +static int intc_irq_set_type(struct irq_data *d, unsigned int type) { - if (irq >= MCFINT_VECBASE) { - if (irq < MCFINT_VECBASE + 64) - __raw_writeb(5, MCFINTC0_ICR0 + irq - MCFINT_VECBASE); - else if ((irq < MCFINT_VECBASE) && MCFINTC1_ICR0) - __raw_writeb(5, MCFINTC1_ICR0 + irq - MCFINT_VECBASE - 64); + unsigned int ebit, irq = d->irq; + u16 pa, tb; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + tb = 0x1; + break; + case IRQ_TYPE_EDGE_FALLING: + tb = 0x2; + break; + case IRQ_TYPE_EDGE_BOTH: + tb = 0x3; + break; + default: + /* Level triggered */ + tb = 0; + break; } + + if (tb) + set_irq_handler(irq, handle_edge_irq); + + ebit = irq2ebit(irq) * 2; + pa = __raw_readw(MCFEPORT_EPPAR); + pa = (pa & ~(0x3 << ebit)) | (tb << ebit); + __raw_writew(pa, MCFEPORT_EPPAR); + return 0; } static struct irq_chip intc_irq_chip = { .name = "CF-INTC", - .mask = intc_irq_mask, - .unmask = intc_irq_unmask, - .set_type = intc_irq_set_type, + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, +}; + +static struct irq_chip intc_irq_chip_edge_port = { + .name = "CF-INTC-EP", + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_ack = intc_irq_ack, + .irq_set_type = intc_irq_set_type, }; void __init init_IRQ(void) { - int irq; + int irq, eirq; init_vectors(); @@ -69,8 +178,12 @@ void __init init_IRQ(void) if (MCFINTC1_SIMR) __raw_writeb(0xff, MCFINTC1_SIMR); - for (irq = 0; (irq < NR_IRQS); irq++) { - set_irq_chip(irq, &intc_irq_chip); + eirq = MCFINT_VECBASE + 64 + (MCFINTC1_ICR0 ? 64 : 0); + for (irq = MCFINT_VECBASE; (irq < eirq); irq++) { + if ((irq >= EINT1) && (irq <= EINT7)) + set_irq_chip(irq, &intc_irq_chip_edge_port); + else + set_irq_chip(irq, &intc_irq_chip); set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH); set_irq_handler(irq, handle_level_irq); } diff --git a/arch/m68knommu/platform/coldfire/intc.c b/arch/m68knommu/platform/coldfire/intc.c index 60d2fcbe182..d648081a63f 100644 --- a/arch/m68knommu/platform/coldfire/intc.c +++ b/arch/m68knommu/platform/coldfire/intc.c @@ -111,28 +111,28 @@ void mcf_autovector(int irq) #endif } -static void intc_irq_mask(unsigned int irq) +static void intc_irq_mask(struct irq_data *d) { - if (mcf_irq2imr[irq]) - mcf_setimr(mcf_irq2imr[irq]); + if (mcf_irq2imr[d->irq]) + mcf_setimr(mcf_irq2imr[d->irq]); } -static void intc_irq_unmask(unsigned int irq) +static void intc_irq_unmask(struct irq_data *d) { - if (mcf_irq2imr[irq]) - mcf_clrimr(mcf_irq2imr[irq]); + if (mcf_irq2imr[d->irq]) + mcf_clrimr(mcf_irq2imr[d->irq]); } -static int intc_irq_set_type(unsigned int irq, unsigned int type) +static int intc_irq_set_type(struct irq_data *d, unsigned int type) { return 0; } static struct irq_chip intc_irq_chip = { .name = "CF-INTC", - .mask = intc_irq_mask, - .unmask = intc_irq_unmask, - .set_type = intc_irq_set_type, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_set_type = intc_irq_set_type, }; void __init init_IRQ(void) diff --git a/arch/m68knommu/platform/coldfire/pit.c b/arch/m68knommu/platform/coldfire/pit.c index aebea19abd7..c2b980926be 100644 --- a/arch/m68knommu/platform/coldfire/pit.c +++ b/arch/m68knommu/platform/coldfire/pit.c @@ -31,7 +31,7 @@ * By default use timer1 as the system clock timer. */ #define FREQ ((MCF_CLK / 2) / 64) -#define TA(a) (MCF_IPSBAR + MCFPIT_BASE1 + (a)) +#define TA(a) (MCFPIT_BASE1 + (a)) #define PIT_CYCLES_PER_JIFFY (FREQ / HZ) static u32 pit_cnt; diff --git a/arch/m68knommu/platform/coldfire/timers.c b/arch/m68knommu/platform/coldfire/timers.c index 2304d736c70..60242f65fea 100644 --- a/arch/m68knommu/platform/coldfire/timers.c +++ b/arch/m68knommu/platform/coldfire/timers.c @@ -28,7 +28,7 @@ * By default use timer1 as the system clock timer. */ #define FREQ (MCF_BUSCLK / 16) -#define TA(a) (MCF_MBAR + MCFTIMER_BASE1 + (a)) +#define TA(a) (MCFTIMER_BASE1 + (a)) /* * These provide the underlying interrupt vector support. @@ -126,7 +126,7 @@ void hw_timer_init(void) /* * By default use timer2 as the profiler clock timer. */ -#define PA(a) (MCF_MBAR + MCFTIMER_BASE2 + (a)) +#define PA(a) (MCFTIMER_BASE2 + (a)) /* * Choose a reasonably fast profile timer. Make it an odd value to |