From 075b8783da0db700868c7b391636a85c06a89678 Mon Sep 17 00:00:00 2001 From: Ryan Bradetich Date: Fri, 3 Nov 2006 05:05:01 +0000 Subject: [PARISC] HPPB bus updates for E-Class systems This patch addresses the following issues: * Removes an incorrect comment. * Fixes a couple of compiler warnings. * Properly detects the HP-PB bus on E-Class systems. Signed-off-by: Ryan Bradetich Signed-off-by: Kyle McMartin --- drivers/parisc/hppb.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/hppb.c b/drivers/parisc/hppb.c index 07dc2b6d4e93..9bb4db552f3c 100644 --- a/drivers/parisc/hppb.c +++ b/drivers/parisc/hppb.c @@ -10,10 +10,6 @@ ** the Free Software Foundation; either version 2 of the License, or ** (at your option) any later version. ** -** This Driver currently only supports the console (port 0) on the MUX. -** Additional work will be needed on this driver to enable the full -** functionality of the MUX. -** */ #include @@ -67,7 +63,7 @@ static int hppb_probe(struct parisc_device *dev) } card = card->next; } - printk(KERN_INFO "Found GeckoBoa at 0x%lx\n", dev->hpa.start); + printk(KERN_INFO "Found GeckoBoa at 0x%x\n", dev->hpa.start); card->hpa = dev->hpa.start; card->mmio_region.name = "HP-PB Bus"; @@ -78,16 +74,18 @@ static int hppb_probe(struct parisc_device *dev) status = ccio_request_resource(dev, &card->mmio_region); if(status < 0) { - printk(KERN_ERR "%s: failed to claim HP-PB bus space (%08lx, %08lx)\n", + printk(KERN_ERR "%s: failed to claim HP-PB bus space (%08x, %08x)\n", __FILE__, card->mmio_region.start, card->mmio_region.end); } return 0; } - static struct parisc_device_id hppb_tbl[] = { - { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, + { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, /* E25 and K */ + { HPHW_BCPORT, 0x0, 0x501, 0xc }, /* E35 */ + { HPHW_BCPORT, 0x0, 0x502, 0xc }, /* E45 */ + { HPHW_BCPORT, 0x0, 0x503, 0xc }, /* E55 */ { 0, } }; -- cgit v1.2.2 From c2c4798e04ef836b12f5df04e7d1a1710cb39301 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Thu, 26 Oct 2006 10:06:07 -0600 Subject: [PARISC] sparse fixes 0/NULL, missing __user, missing __iomem, non-ANSI prototype. Signed-off-by: Matthew Wilcox Signed-off-by: Kyle McMartin --- drivers/parisc/iosapic_private.h | 2 +- drivers/parisc/lba_pci.c | 2 +- drivers/parisc/sba_iommu.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/iosapic_private.h b/drivers/parisc/iosapic_private.h index 41e7ec2a44aa..6e05e30a2450 100644 --- a/drivers/parisc/iosapic_private.h +++ b/drivers/parisc/iosapic_private.h @@ -132,7 +132,7 @@ struct iosapic_irt { struct vector_info { struct iosapic_info *iosapic; /* I/O SAPIC this vector is on */ struct irt_entry *irte; /* IRT entry */ - u32 *eoi_addr; /* precalculate EOI reg address */ + u32 __iomem *eoi_addr; /* precalculate EOI reg address */ u32 eoi_data; /* IA64: ? PA: swapped txn_data */ int txn_irq; /* virtual IRQ number for processor */ ulong txn_addr; /* IA64: id_eid PA: partial HPA */ diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index ba6769934c77..ad4a1a12a1ae 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -980,7 +980,7 @@ LBA_PORT_IN(32, 0) #define LBA_PORT_OUT(size, mask) \ static void lba_pat_out##size (struct pci_hba_data *l, u16 addr, u##size val) \ { \ - void *where = (void *) PIOP_TO_GMMIO(LBA_DEV(l), addr); \ + void __iomem *where = PIOP_TO_GMMIO(LBA_DEV(l), addr); \ DBG_PORT("%s(0x%p, 0x%x, 0x%x)\n", __FUNCTION__, l, addr, val); \ WRITE_REG##size(val, where); \ /* flush the I/O down to the elroy at least */ \ diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index f1e7ccd5475b..41abbed51ea7 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -846,7 +846,7 @@ static void *sba_alloc_consistent(struct device *hwdev, size_t size, if (!hwdev) { /* only support PCI */ *dma_handle = 0; - return 0; + return NULL; } ret = (void *) __get_free_pages(gfp, get_order(size)); -- cgit v1.2.2 From 353dfe1290bdce1d40609e35ca6e42829623ff5f Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Sat, 18 Nov 2006 10:11:03 -0700 Subject: [PARISC] Fix PCI bus numbering in the presence of Cardbus bridges Firmware ignores Cardbus bridges, so when Linux assigns bus numbers, it must override firmware's notion of what the busses are numbered. This is not sufficient to support the Cardbus bridge as there is also no interrupt routing table entry for them. Signed-off-by: Matthew Wilcox Signed-off-by: Kyle McMartin --- drivers/parisc/lba_pci.c | 32 +++++++++++++++++++------------- 1 file changed, 19 insertions(+), 13 deletions(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index ad4a1a12a1ae..eae0812f01a5 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -1406,13 +1406,20 @@ lba_hw_init(struct lba_device *d) return 0; } - +/* + * Unfortunately, when firmware numbers busses, it doesn't take into account + * Cardbus bridges. So we have to renumber the busses to suit ourselves. + * Elroy/Mercury don't actually know what bus number they're attached to; + * we use bus 0 to indicate the directly attached bus and any other bus + * number will be taken care of by the PCI-PCI bridge. + */ +static unsigned int lba_next_bus = 0; /* -** Determine if lba should claim this chip (return 0) or not (return 1). -** If so, initialize the chip and tell other partners in crime they -** have work to do. -*/ + * Determine if lba should claim this chip (return 0) or not (return 1). + * If so, initialize the chip and tell other partners in crime they + * have work to do. + */ static int __init lba_driver_probe(struct parisc_device *dev) { @@ -1478,9 +1485,7 @@ lba_driver_probe(struct parisc_device *dev) return -ENODEV; } - /* - ** Tell I/O SAPIC driver we have a IRQ handler/region. - */ + /* Tell I/O SAPIC driver we have a IRQ handler/region. */ tmp_obj = iosapic_register(dev->hpa.start + LBA_IOSAPIC_BASE); /* NOTE: PCI devices (e.g. 103c:1005 graphics card) which don't @@ -1529,16 +1534,17 @@ lba_driver_probe(struct parisc_device *dev) lba_legacy_resources(dev, lba_dev); } - /* - ** Tell PCI support another PCI bus was found. - ** Walks PCI bus for us too. - */ + if (lba_dev->hba.bus_num.start < lba_next_bus) + lba_dev->hba.bus_num.start = lba_next_bus; + dev->dev.platform_data = lba_dev; lba_bus = lba_dev->hba.hba_bus = pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start, cfg_ops, NULL); - if (lba_bus) + if (lba_bus) { + lba_next_bus = lba_bus->subordinate + 1; pci_bus_add_devices(lba_bus); + } /* This is in lieu of calling pci_assign_unassigned_resources() */ if (is_pdc_pat()) { -- cgit v1.2.2 From 6858f3bf6e856d10a932d2d167d3f34e366042c6 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 7 Dec 2006 15:31:38 +0000 Subject: [PATCH] WorkStruct: Fix up some PA-RISC work items Fix up some PA-RISC work items broken by the workstruct reduction. Signed-off-by: David Howells Signed-off-by: Kyle McMartin --- drivers/parisc/led.c | 12 ++++++------ drivers/parisc/power.c | 4 ++-- 2 files changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 8dac2ba82bb9..6818c10c0c46 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -66,8 +66,8 @@ static char lcd_text_default[32] __read_mostly; static struct workqueue_struct *led_wq; -static void led_work_func(void *); -static DECLARE_WORK(led_task, led_work_func, NULL); +static void led_work_func(struct work_struct *); +static DECLARE_DELAYED_WORK(led_task, led_work_func); #if 0 #define DPRINTK(x) printk x @@ -136,7 +136,7 @@ static int start_task(void) /* Create the work queue and queue the LED task */ led_wq = create_singlethread_workqueue("led_wq"); - queue_work(led_wq, &led_task); + queue_delayed_work(led_wq, &led_task, 0); return 0; } @@ -443,7 +443,7 @@ static __inline__ int led_get_diskio_activity(void) #define LED_UPDATE_INTERVAL (1 + (HZ*19/1000)) -static void led_work_func (void *unused) +static void led_work_func (struct work_struct *unused) { static unsigned long last_jiffies; static unsigned long count_HZ; /* counter in range 0..HZ */ @@ -590,7 +590,7 @@ int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long d /* Ensure the work is queued */ if (led_wq) { - queue_work(led_wq, &led_task); + queue_delayed_work(led_wq, &led_task, 0); } return 0; @@ -660,7 +660,7 @@ int lcd_print( char *str ) /* re-queue the work */ if (led_wq) { - queue_work(led_wq, &led_task); + queue_delayed_work(led_wq, &led_task, 0); } return lcd_info.lcd_width; diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c index 97e9dc066f95..9228e210c3bb 100644 --- a/drivers/parisc/power.c +++ b/drivers/parisc/power.c @@ -82,7 +82,7 @@ } ) -static void deferred_poweroff(void *dummy) +static void deferred_poweroff(struct work_struct *unused) { if (kill_cad_pid(SIGINT, 1)) { /* just in case killing init process failed */ @@ -96,7 +96,7 @@ static void deferred_poweroff(void *dummy) * use schedule_work(). */ -static DECLARE_WORK(poweroff_work, deferred_poweroff, NULL); +static DECLARE_WORK(poweroff_work, deferred_poweroff); static void poweroff(void) { -- cgit v1.2.2 From 29a1e1d2732c7bfa94465749285aea0f2ed12213 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 5 Feb 2007 16:33:59 -0800 Subject: [PATCH] parisc: fix module_param iommu permission Fix/change module_param permissions parameter from an init value to a permission value. Signed-off-by: Randy Dunlap Cc: Kyle McMartin Cc: Matthew Wilcox Signed-off-by: Andrew Morton --- drivers/parisc/sba_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index 41abbed51ea7..26fece45e737 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -109,7 +109,7 @@ static unsigned long piranha_bad_128k = 0; #ifdef SBA_AGP_SUPPORT static int sba_reserve_agpgart = 1; -module_param(sba_reserve_agpgart, int, 1); +module_param(sba_reserve_agpgart, int, 0444); MODULE_PARM_DESC(sba_reserve_agpgart, "Reserve half of IO pdir as AGPGART"); #endif -- cgit v1.2.2 From 645d11d4baa56c6830daac46a92d63b7093cbc09 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Sun, 24 Dec 2006 19:28:42 -0700 Subject: [PARISC] lba_pci format warnings Fix resource_size_t warnings in a variety of ways Signed-off-by: Matthew Wilcox Signed-off-by: Kyle McMartin --- drivers/parisc/lba_pci.c | 56 +++++++++++++++++++++++++----------------------- 1 file changed, 29 insertions(+), 27 deletions(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index eae0812f01a5..21c4c299b3d6 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -168,7 +168,8 @@ lba_dump_res(struct resource *r, int d) printk(KERN_DEBUG "(%p)", r->parent); for (i = d; i ; --i) printk(" "); - printk(KERN_DEBUG "%p [%lx,%lx]/%lx\n", r, r->start, r->end, r->flags); + printk(KERN_DEBUG "%p [%lx,%lx]/%lx\n", r, + (long)r->start, (long)r->end, r->flags); lba_dump_res(r->child, d+2); lba_dump_res(r->sibling, d); } @@ -647,7 +648,7 @@ truncate_pat_collision(struct resource *root, struct resource *new) printk(KERN_WARNING "LBA: Truncating lmmio_space [%lx/%lx] " "to [%lx,%lx]\n", start, end, - new->start, new->end ); + (long)new->start, (long)new->end ); return 0; /* truncation successful */ } @@ -715,8 +716,8 @@ lba_fixup_bus(struct pci_bus *bus) printk("FAILED: lba_fixup_bus() request for " "elmmio_space [%lx/%lx]\n", - ldev->hba.elmmio_space.start, - ldev->hba.elmmio_space.end); + (long)ldev->hba.elmmio_space.start, + (long)ldev->hba.elmmio_space.end); /* lba_dump_res(&iomem_resource, 2); */ /* BUG(); */ @@ -738,15 +739,15 @@ lba_fixup_bus(struct pci_bus *bus) &(ldev->hba.lmmio_space))) { printk(KERN_WARNING "LBA: lmmio_space [%lx/%lx] duplicate!\n", - ldev->hba.lmmio_space.start, - ldev->hba.lmmio_space.end); + (long)ldev->hba.lmmio_space.start, + (long)ldev->hba.lmmio_space.end); } else { err = request_resource(&iomem_resource, &(ldev->hba.lmmio_space)); if (err < 0) { printk(KERN_ERR "FAILED: lba_fixup_bus() request for " "lmmio_space [%lx/%lx]\n", - ldev->hba.lmmio_space.start, - ldev->hba.lmmio_space.end); + (long)ldev->hba.lmmio_space.start, + (long)ldev->hba.lmmio_space.end); } else bus->resource[i++] = &(ldev->hba.lmmio_space); } @@ -758,8 +759,8 @@ lba_fixup_bus(struct pci_bus *bus) if (err < 0) { printk("FAILED: lba_fixup_bus() request for " "gmmio_space [%lx/%lx]\n", - ldev->hba.gmmio_space.start, - ldev->hba.gmmio_space.end); + (long)ldev->hba.gmmio_space.start, + (long)ldev->hba.gmmio_space.end); lba_dump_res(&iomem_resource, 2); BUG(); } @@ -1063,16 +1064,16 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) /* used to fix up pre-initialized MEM BARs */ if (!lba_dev->hba.lmmio_space.start) { sprintf(lba_dev->hba.lmmio_name, - "PCI%02lx LMMIO", - lba_dev->hba.bus_num.start); + "PCI%02x LMMIO", + (int)lba_dev->hba.bus_num.start); lba_dev->hba.lmmio_space_offset = p->start - io->start; r = &lba_dev->hba.lmmio_space; r->name = lba_dev->hba.lmmio_name; } else if (!lba_dev->hba.elmmio_space.start) { sprintf(lba_dev->hba.elmmio_name, - "PCI%02lx ELMMIO", - lba_dev->hba.bus_num.start); + "PCI%02x ELMMIO", + (int)lba_dev->hba.bus_num.start); r = &lba_dev->hba.elmmio_space; r->name = lba_dev->hba.elmmio_name; } else { @@ -1089,8 +1090,8 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) case PAT_GMMIO: /* MMIO space > 4GB phys addr; for 64-bit BAR */ - sprintf(lba_dev->hba.gmmio_name, "PCI%02lx GMMIO", - lba_dev->hba.bus_num.start); + sprintf(lba_dev->hba.gmmio_name, "PCI%02x GMMIO", + (int)lba_dev->hba.bus_num.start); r = &lba_dev->hba.gmmio_space; r->name = lba_dev->hba.gmmio_name; r->start = p->start; @@ -1112,8 +1113,8 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) */ lba_dev->iop_base = ioremap_nocache(p->start, 64 * 1024 * 1024); - sprintf(lba_dev->hba.io_name, "PCI%02lx Ports", - lba_dev->hba.bus_num.start); + sprintf(lba_dev->hba.io_name, "PCI%02x Ports", + (int)lba_dev->hba.bus_num.start); r = &lba_dev->hba.io_space; r->name = lba_dev->hba.io_name; r->start = HBA_PORT_BASE(lba_dev->hba.hba_num); @@ -1166,8 +1167,8 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) ** Legacy boxes but it's nice to see in /proc/iomem. */ r = &(lba_dev->hba.lmmio_space); - sprintf(lba_dev->hba.lmmio_name, "PCI%02lx LMMIO", - lba_dev->hba.bus_num.start); + sprintf(lba_dev->hba.lmmio_name, "PCI%02x LMMIO", + (int)lba_dev->hba.bus_num.start); r->name = lba_dev->hba.lmmio_name; #if 1 @@ -1275,8 +1276,8 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) ** an existing (but unused portion of) distributed range. */ r = &(lba_dev->hba.elmmio_space); - sprintf(lba_dev->hba.elmmio_name, "PCI%02lx ELMMIO", - lba_dev->hba.bus_num.start); + sprintf(lba_dev->hba.elmmio_name, "PCI%02x ELMMIO", + (int)lba_dev->hba.bus_num.start); r->name = lba_dev->hba.elmmio_name; #if 1 @@ -1297,8 +1298,8 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) #endif r = &(lba_dev->hba.io_space); - sprintf(lba_dev->hba.io_name, "PCI%02lx Ports", - lba_dev->hba.bus_num.start); + sprintf(lba_dev->hba.io_name, "PCI%02x Ports", + (int)lba_dev->hba.bus_num.start); r->name = lba_dev->hba.io_name; r->flags = IORESOURCE_IO; r->start = READ_REG32(lba_dev->hba.base_addr + LBA_IOS_BASE) & ~1L; @@ -1447,7 +1448,7 @@ lba_driver_probe(struct parisc_device *dev) } printk(KERN_INFO "Elroy version %s (0x%x) found at 0x%lx\n", - version, func_class & 0xf, dev->hpa.start); + version, func_class & 0xf, (long)dev->hpa.start); if (func_class < 2) { printk(KERN_WARNING "Can't support LBA older than " @@ -1477,11 +1478,12 @@ lba_driver_probe(struct parisc_device *dev) */ printk(KERN_INFO "%s version TR%d.%d (0x%x) found at 0x%lx\n", IS_MERCURY(dev) ? "Mercury" : "Quicksilver", major, - minor, func_class, dev->hpa.start); + minor, func_class, (long)dev->hpa.start); cfg_ops = &mercury_cfg_ops; } else { - printk(KERN_ERR "Unknown LBA found at 0x%lx\n", dev->hpa.start); + printk(KERN_ERR "Unknown LBA found at 0x%lx\n", + (long)dev->hpa.start); return -ENODEV; } -- cgit v1.2.2 From 6e16d9409e1f08594587855d2a280c391ba985ff Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Sun, 7 Jan 2007 16:07:48 +0100 Subject: [PARISC] Convert soft power switch driver to kthread And remove it's reference in time.c. Allow lcd_print() to take a const char *. Signed-off-by: Helge Deller Signed-off-by: Kyle McMartin --- drivers/parisc/led.c | 2 +- drivers/parisc/power.c | 201 ++++++++++++++++++++++--------------------------- 2 files changed, 90 insertions(+), 113 deletions(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 6818c10c0c46..a415d9b1c715 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -631,7 +631,7 @@ void __init register_led_regions(void) ** avoid a race condition while writing the CMD/DATA register pair. ** */ -int lcd_print( char *str ) +int lcd_print( const char *str ) { int i; diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c index 9228e210c3bb..6dedbdef7106 100644 --- a/drivers/parisc/power.c +++ b/drivers/parisc/power.c @@ -2,7 +2,7 @@ * linux/drivers/parisc/power.c * HP PARISC soft power switch support driver * - * Copyright (c) 2001-2005 Helge Deller + * Copyright (c) 2001-2007 Helge Deller * All rights reserved. * * @@ -29,7 +29,6 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * * - * * HINT: * Support of the soft power switch button may be enabled or disabled at * runtime through the "/proc/sys/kernel/power" procfs entry. @@ -38,34 +37,28 @@ #include #include #include -#include #include #include #include -#include -#include +#include #include #include #include -#include +#define DRIVER_NAME "powersw" +#define KTHREAD_NAME "kpowerswd" -#ifdef DEBUG -# define DPRINTK(x...) printk(x) -#else -# define DPRINTK(x...) -#endif - - -/* filename in /proc which can be used to enable/disable the power switch */ -#define SYSCTL_FILENAME "sys/kernel/power" +/* how often should the power button be polled ? */ +#define POWERSWITCH_POLL_PER_SEC 2 +/* how long does the power button needs to be down until we react ? */ +#define POWERSWITCH_DOWN_SEC 2 +/* assembly code to access special registers */ +/* taken from PCXL ERS page 82 */ #define DIAG_CODE(code) (0x14000000 + ((code)<<5)) -/* this will go to processor.h or any other place... */ -/* taken from PCXL ERS page 82 */ #define MFCPU_X(rDiagReg, t_ch, t_th, code) \ (DIAG_CODE(code) + ((rDiagReg)<<21) + ((t_ch)<<16) + ((t_th)<<0) ) @@ -76,111 +69,95 @@ #define __getDIAG(dr) ( { \ register unsigned long __res asm("r28");\ __asm__ __volatile__ ( \ - ".word %1\n nop\n" : "=&r" (__res) : "i" (MFCPU_T(dr,28)) \ + ".word %1" : "=&r" (__res) : "i" (MFCPU_T(dr,28) ) \ ); \ __res; \ } ) - -static void deferred_poweroff(struct work_struct *unused) -{ - if (kill_cad_pid(SIGINT, 1)) { - /* just in case killing init process failed */ - machine_power_off(); - } -} - -/* - * This function gets called from interrupt context. - * As it's called within an interrupt, it wouldn't sync if we don't - * use schedule_work(). - */ - -static DECLARE_WORK(poweroff_work, deferred_poweroff); - -static void poweroff(void) -{ - static int powering_off __read_mostly; - - if (powering_off) - return; - - powering_off++; - schedule_work(&poweroff_work); -} - - -/* local time-counter for shutdown */ +/* local shutdown counter */ static int shutdown_timer __read_mostly; /* check, give feedback and start shutdown after one second */ static void process_shutdown(void) { if (shutdown_timer == 0) - DPRINTK(KERN_INFO "Shutdown requested...\n"); + printk(KERN_ALERT KTHREAD_NAME ": Shutdown requested...\n"); shutdown_timer++; /* wait until the button was pressed for 1 second */ - if (shutdown_timer == HZ) { -#if defined (DEBUG) || defined(CONFIG_CHASSIS_LCD_LED) - static char msg[] = "Shutting down..."; -#endif - DPRINTK(KERN_INFO "%s\n", msg); + if (shutdown_timer == (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC)) { + static const char msg[] = "Shutting down..."; + printk(KERN_INFO KTHREAD_NAME ": %s\n", msg); lcd_print(msg); - poweroff(); + + /* send kill signal */ + if (kill_cad_pid(SIGINT, 1)) { + /* just in case killing init process failed */ + if (pm_power_off) + pm_power_off(); + } } } -/* main power switch tasklet struct (scheduled from time.c) */ -DECLARE_TASKLET_DISABLED(power_tasklet, NULL, 0); +/* main power switch task struct */ +static struct task_struct *power_task; + +/* filename in /proc which can be used to enable/disable the power switch */ +#define SYSCTL_FILENAME "sys/kernel/power" /* soft power switch enabled/disabled */ int pwrsw_enabled __read_mostly = 1; -/* - * On gecko style machines (e.g. 712/xx and 715/xx) - * the power switch status is stored in Bit 0 ("the highest bit") - * of CPU diagnose register 25. - * - */ -static void gecko_tasklet_func(unsigned long unused) +/* main kernel thread worker. It polls the button state */ +static int kpowerswd(void *param) { - if (unlikely(!pwrsw_enabled)) - return; - - if (__getDIAG(25) & 0x80000000) { - /* power switch button not pressed or released again */ - /* Warning: Some machines do never reset this DIAG flag! */ - shutdown_timer = 0; - } else { - process_shutdown(); - } -} - + __set_current_state(TASK_RUNNING); + + do { + int button_not_pressed; + unsigned long soft_power_reg = (unsigned long) param; + + schedule_timeout_interruptible(pwrsw_enabled ? HZ : HZ/POWERSWITCH_POLL_PER_SEC); + __set_current_state(TASK_RUNNING); + + if (unlikely(!pwrsw_enabled)) + continue; + + if (soft_power_reg) { + /* + * Non-Gecko-style machines: + * Check the power switch status which is read from the + * real I/O location at soft_power_reg. + * Bit 31 ("the lowest bit) is the status of the power switch. + * This bit is "1" if the button is NOT pressed. + */ + button_not_pressed = (gsc_readl(soft_power_reg) & 0x1); + } else { + /* + * On gecko style machines (e.g. 712/xx and 715/xx) + * the power switch status is stored in Bit 0 ("the highest bit") + * of CPU diagnose register 25. + * Warning: Some machines never reset the DIAG flag, even if + * the button has been released again. + */ + button_not_pressed = (__getDIAG(25) & 0x80000000); + } + + if (likely(button_not_pressed)) { + if (unlikely(shutdown_timer && /* avoid writing if not necessary */ + shutdown_timer < (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC))) { + shutdown_timer = 0; + printk(KERN_INFO KTHREAD_NAME ": Shutdown request aborted.\n"); + } + } else + process_shutdown(); + + + } while (!kthread_should_stop()); - -/* - * Check the power switch status which is read from the - * real I/O location at soft_power_reg. - * Bit 31 ("the lowest bit) is the status of the power switch. - */ - -static void polling_tasklet_func(unsigned long soft_power_reg) -{ - unsigned long current_status; - - if (unlikely(!pwrsw_enabled)) - return; - - current_status = gsc_readl(soft_power_reg); - if (current_status & 0x1) { - /* power switch button not pressed */ - shutdown_timer = 0; - } else { - process_shutdown(); - } + return 0; } @@ -220,7 +197,7 @@ static struct notifier_block parisc_panic_block = { static int __init power_init(void) { unsigned long ret; - unsigned long soft_power_reg = 0; + unsigned long soft_power_reg; #if 0 request_irq( IRQ_FROM_REGION(CPU_IRQ_REGION)+2, &powerfail_interrupt, @@ -235,44 +212,44 @@ static int __init power_init(void) soft_power_reg = -1UL; switch (soft_power_reg) { - case 0: printk(KERN_INFO "Gecko-style soft power switch enabled.\n"); - power_tasklet.func = gecko_tasklet_func; + case 0: printk(KERN_INFO DRIVER_NAME ": Gecko-style soft power switch enabled.\n"); break; - case -1UL: printk(KERN_INFO "Soft power switch support not available.\n"); + case -1UL: printk(KERN_INFO DRIVER_NAME ": Soft power switch support not available.\n"); return -ENODEV; - default: printk(KERN_INFO "Soft power switch enabled, polling @ 0x%08lx.\n", + default: printk(KERN_INFO DRIVER_NAME ": Soft power switch at 0x%08lx enabled.\n", soft_power_reg); - power_tasklet.data = soft_power_reg; - power_tasklet.func = polling_tasklet_func; + } + + power_task = kthread_run(kpowerswd, (void*)soft_power_reg, KTHREAD_NAME); + if (IS_ERR(power_task)) { + printk(KERN_ERR DRIVER_NAME ": thread creation failed. Driver not loaded.\n"); + pdc_soft_power_button(0); + return -EIO; } /* Register a call for panic conditions. */ atomic_notifier_chain_register(&panic_notifier_list, &parisc_panic_block); - tasklet_enable(&power_tasklet); - return 0; } static void __exit power_exit(void) { - if (!power_tasklet.func) - return; + kthread_stop(power_task); - tasklet_disable(&power_tasklet); atomic_notifier_chain_unregister(&panic_notifier_list, &parisc_panic_block); - power_tasklet.func = NULL; + pdc_soft_power_button(0); } -module_init(power_init); +arch_initcall(power_init); module_exit(power_exit); -MODULE_AUTHOR("Helge Deller"); +MODULE_AUTHOR("Helge Deller "); MODULE_DESCRIPTION("Soft power switch driver"); MODULE_LICENSE("Dual BSD/GPL"); -- cgit v1.2.2