From 0ebfff1491ef85d41ddf9c633834838be144f69f Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 3 Jul 2006 21:36:01 +1000 Subject: [POWERPC] Add new interrupt mapping core and change platforms to use it This adds the new irq remapper core and removes the old one. Because there are some fundamental conflicts with the old code, like the value of NO_IRQ which I'm now setting to 0 (as per discussions with Linus), etc..., this commit also changes the relevant platform and driver code over to use the new remapper (so as not to cause difficulties later in bisecting). This patch removes the old pre-parsing of the open firmware interrupt tree along with all the bogus assumptions it made to try to renumber interrupts according to the platform. This is all to be handled by the new code now. For the pSeries XICS interrupt controller, a single remapper host is created for the whole machine regardless of how many interrupt presentation and source controllers are found, and it's set to match any device node that isn't a 8259. That works fine on pSeries and avoids having to deal with some of the complexities of split source controllers vs. presentation controllers in the pSeries device trees. The powerpc i8259 PIC driver now always requests the legacy interrupt range. It also has the feature of being able to match any device node (including NULL) if passed no device node as an input. That will help porting over platforms with broken device-trees like Pegasos who don't have a proper interrupt tree. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- drivers/macintosh/macio-adb.c | 19 ++---- drivers/macintosh/macio_asic.c | 152 ++++++++++++++++++++++++++++------------- drivers/macintosh/smu.c | 6 +- drivers/macintosh/via-cuda.c | 24 ++++--- drivers/macintosh/via-pmu.c | 33 ++++----- 5 files changed, 138 insertions(+), 96 deletions(-) (limited to 'drivers/macintosh') diff --git a/drivers/macintosh/macio-adb.c b/drivers/macintosh/macio-adb.c index 314fc0830d9..4b08852c35e 100644 --- a/drivers/macintosh/macio-adb.c +++ b/drivers/macintosh/macio-adb.c @@ -90,22 +90,12 @@ int macio_init(void) { struct device_node *adbs; struct resource r; + unsigned int irq; adbs = find_compatible_devices("adb", "chrp,adb0"); if (adbs == 0) return -ENXIO; -#if 0 - { int i = 0; - - printk("macio_adb_init: node = %p, addrs =", adbs->node); - while(!of_address_to_resource(adbs, i, &r)) - printk(" %x(%x)", r.start, r.end - r.start); - printk(", intrs ="); - for (i = 0; i < adbs->n_intrs; ++i) - printk(" %x", adbs->intrs[i].line); - printk("\n"); } -#endif if (of_address_to_resource(adbs, 0, &r)) return -ENXIO; adb = ioremap(r.start, sizeof(struct adb_regs)); @@ -117,10 +107,9 @@ int macio_init(void) out_8(&adb->active_lo.r, 0xff); out_8(&adb->autopoll.r, APE); - if (request_irq(adbs->intrs[0].line, macio_adb_interrupt, - 0, "ADB", (void *)0)) { - printk(KERN_ERR "ADB: can't get irq %d\n", - adbs->intrs[0].line); + irq = irq_of_parse_and_map(adbs, 0); + if (request_irq(irq, macio_adb_interrupt, 0, "ADB", (void *)0)) { + printk(KERN_ERR "ADB: can't get irq %d\n", irq); return -EAGAIN; } out_8(&adb->intr_enb.r, DFB | TAG); diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c index 40ae7b6a939..80c0c665b5f 100644 --- a/drivers/macintosh/macio_asic.c +++ b/drivers/macintosh/macio_asic.c @@ -280,75 +280,128 @@ static void macio_release_dev(struct device *dev) static int macio_resource_quirks(struct device_node *np, struct resource *res, int index) { - if (res->flags & IORESOURCE_MEM) { - /* Grand Central has too large resource 0 on some machines */ - if (index == 0 && !strcmp(np->name, "gc")) - res->end = res->start + 0x1ffff; + /* Only quirks for memory resources for now */ + if ((res->flags & IORESOURCE_MEM) == 0) + return 0; + + /* Grand Central has too large resource 0 on some machines */ + if (index == 0 && !strcmp(np->name, "gc")) + res->end = res->start + 0x1ffff; - /* Airport has bogus resource 2 */ - if (index >= 2 && !strcmp(np->name, "radio")) - return 1; + /* Airport has bogus resource 2 */ + if (index >= 2 && !strcmp(np->name, "radio")) + return 1; #ifndef CONFIG_PPC64 - /* DBDMAs may have bogus sizes */ - if ((res->start & 0x0001f000) == 0x00008000) - res->end = res->start + 0xff; + /* DBDMAs may have bogus sizes */ + if ((res->start & 0x0001f000) == 0x00008000) + res->end = res->start + 0xff; #endif /* CONFIG_PPC64 */ - /* ESCC parent eats child resources. We could have added a - * level of hierarchy, but I don't really feel the need - * for it - */ - if (!strcmp(np->name, "escc")) - return 1; - - /* ESCC has bogus resources >= 3 */ - if (index >= 3 && !(strcmp(np->name, "ch-a") && - strcmp(np->name, "ch-b"))) - return 1; - - /* Media bay has too many resources, keep only first one */ - if (index > 0 && !strcmp(np->name, "media-bay")) - return 1; - - /* Some older IDE resources have bogus sizes */ - if (!(strcmp(np->name, "IDE") && strcmp(np->name, "ATA") && - strcmp(np->type, "ide") && strcmp(np->type, "ata"))) { - if (index == 0 && (res->end - res->start) > 0xfff) - res->end = res->start + 0xfff; - if (index == 1 && (res->end - res->start) > 0xff) - res->end = res->start + 0xff; - } + /* ESCC parent eats child resources. We could have added a + * level of hierarchy, but I don't really feel the need + * for it + */ + if (!strcmp(np->name, "escc")) + return 1; + + /* ESCC has bogus resources >= 3 */ + if (index >= 3 && !(strcmp(np->name, "ch-a") && + strcmp(np->name, "ch-b"))) + return 1; + + /* Media bay has too many resources, keep only first one */ + if (index > 0 && !strcmp(np->name, "media-bay")) + return 1; + + /* Some older IDE resources have bogus sizes */ + if (!(strcmp(np->name, "IDE") && strcmp(np->name, "ATA") && + strcmp(np->type, "ide") && strcmp(np->type, "ata"))) { + if (index == 0 && (res->end - res->start) > 0xfff) + res->end = res->start + 0xfff; + if (index == 1 && (res->end - res->start) > 0xff) + res->end = res->start + 0xff; } return 0; } +static void macio_create_fixup_irq(struct macio_dev *dev, int index, + unsigned int line) +{ + unsigned int irq; -static void macio_setup_interrupts(struct macio_dev *dev) + irq = irq_create_mapping(NULL, line, 0); + if (irq != NO_IRQ) { + dev->interrupt[index].start = irq; + dev->interrupt[index].flags = IORESOURCE_IRQ; + dev->interrupt[index].name = dev->ofdev.dev.bus_id; + } + if (dev->n_interrupts <= index) + dev->n_interrupts = index + 1; +} + +static void macio_add_missing_resources(struct macio_dev *dev) { struct device_node *np = dev->ofdev.node; - int i,j; + unsigned int irq_base; + + /* Gatwick has some missing interrupts on child nodes */ + if (dev->bus->chip->type != macio_gatwick) + return; - /* For now, we use pre-parsed entries in the device-tree for - * interrupt routing and addresses, but we should change that - * to dynamically parsed entries and so get rid of most of the - * clutter in struct device_node + /* irq_base is always 64 on gatwick. I have no cleaner way to get + * that value from here at this point */ - for (i = j = 0; i < np->n_intrs; i++) { + irq_base = 64; + + /* Fix SCC */ + if (strcmp(np->name, "ch-a") == 0) { + macio_create_fixup_irq(dev, 0, 15 + irq_base); + macio_create_fixup_irq(dev, 1, 4 + irq_base); + macio_create_fixup_irq(dev, 2, 5 + irq_base); + printk(KERN_INFO "macio: fixed SCC irqs on gatwick\n"); + } + + /* Fix media-bay */ + if (strcmp(np->name, "media-bay") == 0) { + macio_create_fixup_irq(dev, 0, 29 + irq_base); + printk(KERN_INFO "macio: fixed media-bay irq on gatwick\n"); + } + + /* Fix left media bay childs */ + if (dev->media_bay != NULL && strcmp(np->name, "floppy") == 0) { + macio_create_fixup_irq(dev, 0, 19 + irq_base); + macio_create_fixup_irq(dev, 1, 1 + irq_base); + printk(KERN_INFO "macio: fixed left floppy irqs\n"); + } + if (dev->media_bay != NULL && strcasecmp(np->name, "ata4") == 0) { + macio_create_fixup_irq(dev, 0, 14 + irq_base); + macio_create_fixup_irq(dev, 0, 3 + irq_base); + printk(KERN_INFO "macio: fixed left ide irqs\n"); + } +} + +static void macio_setup_interrupts(struct macio_dev *dev) +{ + struct device_node *np = dev->ofdev.node; + unsigned int irq; + int i = 0, j = 0; + + for (;;) { struct resource *res = &dev->interrupt[j]; if (j >= MACIO_DEV_COUNT_IRQS) break; - res->start = np->intrs[i].line; - res->flags = IORESOURCE_IO; - if (np->intrs[j].sense) - res->flags |= IORESOURCE_IRQ_LOWLEVEL; - else - res->flags |= IORESOURCE_IRQ_HIGHEDGE; + irq = irq_of_parse_and_map(np, i++); + if (irq == NO_IRQ) + break; + res->start = irq; + res->flags = IORESOURCE_IRQ; res->name = dev->ofdev.dev.bus_id; - if (macio_resource_quirks(np, res, i)) + if (macio_resource_quirks(np, res, i - 1)) { memset(res, 0, sizeof(struct resource)); - else + continue; + } else j++; } dev->n_interrupts = j; @@ -445,6 +498,7 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip, /* Setup interrupts & resources */ macio_setup_interrupts(dev); macio_setup_resources(dev, parent_res); + macio_add_missing_resources(dev); /* Register with core */ if (of_device_register(&dev->ofdev) != 0) { diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c index ff6d9bfdc3d..f139a74696f 100644 --- a/drivers/macintosh/smu.c +++ b/drivers/macintosh/smu.c @@ -497,8 +497,7 @@ int __init smu_init (void) smu->doorbell = *data; if (smu->doorbell < 0x50) smu->doorbell += 0x50; - if (np->n_intrs > 0) - smu->db_irq = np->intrs[0].line; + smu->db_irq = irq_of_parse_and_map(np, 0); of_node_put(np); @@ -515,8 +514,7 @@ int __init smu_init (void) smu->msg = *data; if (smu->msg < 0x50) smu->msg += 0x50; - if (np->n_intrs > 0) - smu->msg_irq = np->intrs[0].line; + smu->msg_irq = irq_of_parse_and_map(np, 0); of_node_put(np); } while(0); diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c index 6501db50fb8..69d5452fd22 100644 --- a/drivers/macintosh/via-cuda.c +++ b/drivers/macintosh/via-cuda.c @@ -34,13 +34,6 @@ static volatile unsigned char __iomem *via; static DEFINE_SPINLOCK(cuda_lock); -#ifdef CONFIG_MAC -#define CUDA_IRQ IRQ_MAC_ADB -#define eieio() -#else -#define CUDA_IRQ vias->intrs[0].line -#endif - /* VIA registers - spaced 0x200 bytes apart */ #define RS 0x200 /* skip between registers */ #define B 0 /* B-side data */ @@ -189,11 +182,24 @@ int __init find_via_cuda(void) static int __init via_cuda_start(void) { + unsigned int irq; + if (via == NULL) return -ENODEV; - if (request_irq(CUDA_IRQ, cuda_interrupt, 0, "ADB", cuda_interrupt)) { - printk(KERN_ERR "cuda_init: can't get irq %d\n", CUDA_IRQ); +#ifdef CONFIG_MAC + irq = IRQ_MAC_ADB; +#else /* CONFIG_MAC */ + irq = irq_of_parse_and_map(vias, 0); + if (irq == NO_IRQ) { + printk(KERN_ERR "via-cuda: can't map interrupts for %s\n", + vias->full_name); + return -ENODEV; + } +#endif /* CONFIG_MAP */ + + if (request_irq(irq, cuda_interrupt, 0, "ADB", cuda_interrupt)) { + printk(KERN_ERR "via-cuda: can't request irq %d\n", irq); return -EAGAIN; } diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index c1193d34ec9..06ca80bfd6b 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -64,10 +64,6 @@ #include #endif -#ifdef CONFIG_PPC32 -#include -#endif - #include "via-pmu-event.h" /* Some compile options */ @@ -151,7 +147,7 @@ static int pmu_fully_inited = 0; static int pmu_has_adb; static struct device_node *gpio_node; static unsigned char __iomem *gpio_reg = NULL; -static int gpio_irq = -1; +static int gpio_irq = NO_IRQ; static int gpio_irq_enabled = -1; static volatile int pmu_suspended = 0; static spinlock_t pmu_lock; @@ -403,22 +399,21 @@ static int __init pmu_init(void) */ static int __init via_pmu_start(void) { + unsigned int irq; + if (vias == NULL) return -ENODEV; batt_req.complete = 1; -#ifndef CONFIG_PPC_MERGE - if (pmu_kind == PMU_KEYLARGO_BASED) - openpic_set_irq_priority(vias->intrs[0].line, - OPENPIC_PRIORITY_DEFAULT + 1); -#endif - - if (request_irq(vias->intrs[0].line, via_pmu_interrupt, 0, "VIA-PMU", - (void *)0)) { - printk(KERN_ERR "VIA-PMU: can't get irq %d\n", - vias->intrs[0].line); - return -EAGAIN; + irq = irq_of_parse_and_map(vias, 0); + if (irq == NO_IRQ) { + printk(KERN_ERR "via-pmu: can't map interruptn"); + return -ENODEV; + } + if (request_irq(irq, via_pmu_interrupt, 0, "VIA-PMU", (void *)0)) { + printk(KERN_ERR "via-pmu: can't request irq %d\n", irq); + return -ENODEV; } if (pmu_kind == PMU_KEYLARGO_BASED) { @@ -426,10 +421,10 @@ static int __init via_pmu_start(void) if (gpio_node == NULL) gpio_node = of_find_node_by_name(NULL, "pmu-interrupt"); - if (gpio_node && gpio_node->n_intrs > 0) - gpio_irq = gpio_node->intrs[0].line; + if (gpio_node) + gpio_irq = irq_of_parse_and_map(gpio_node, 0); - if (gpio_irq != -1) { + if (gpio_irq != NO_IRQ) { if (request_irq(gpio_irq, gpio1_interrupt, 0, "GPIO1 ADB", (void *)0)) printk(KERN_ERR "pmu: can't get irq %d" -- cgit v1.2.3