diff options
Diffstat (limited to 'drivers/char')
45 files changed, 2494 insertions, 953 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index c40e487d9f5..4cc619edf42 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -439,6 +439,14 @@ config SGI_MBCS If you have an SGI Altix with an attached SABrick say Y or M here, otherwise say N. +config MSPEC + tristate "Memory special operations driver" + depends on IA64 + help + If you have an ia64 and you want to enable memory special + operations support (formerly known as fetchop), say Y here, + otherwise say N. + source "drivers/serial/Kconfig" config UNIX98_PTYS @@ -495,6 +503,21 @@ config LEGACY_PTY_COUNT When not in use, each legacy PTY occupies 12 bytes on 32-bit architectures and 24 bytes on 64-bit architectures. +config BRIQ_PANEL + tristate 'Total Impact briQ front panel driver' + depends on PPC_CHRP + ---help--- + The briQ is a small footprint CHRP computer with a frontpanel VFD, a + tristate led and two switches. It is the size of a CDROM drive. + + If you have such one and want anything showing on the VFD then you + must answer Y here. + + To compile this driver as a module, choose M here: the + module will be called briq_panel. + + It's safe to say N here. + config PRINTER tristate "Parallel printer support" depends on PARPORT @@ -596,6 +619,13 @@ config HVC_CONSOLE console. This driver allows each pSeries partition to have a console which is accessed via the HMC. +config HVC_ISERIES + bool "iSeries Hypervisor Virtual Console support" + depends on PPC_ISERIES && !VIOCONS + select HVC_DRIVER + help + iSeries machines support a hypervisor virtual console. + config HVC_RTAS bool "IBM RTAS Console support" depends on PPC_RTAS @@ -717,7 +747,7 @@ config NVRAM config RTC tristate "Enhanced Real Time Clock Support" - depends on !PPC && !PARISC && !IA64 && !M68K && (!SPARC || PCI) && !FRV && !ARM + depends on !PPC && !PARISC && !IA64 && !M68K && (!SPARC || PCI) && !FRV && !ARM && !SUPERH ---help--- If you say Y here and create a character special file /dev/rtc with major number 10 and minor number 135 using mknod ("man mknod"), you @@ -801,14 +831,6 @@ config DS1302 will get access to the real time clock (or hardware clock) built into your computer. -config S3C2410_RTC - bool "S3C2410 RTC Driver" - depends on ARCH_S3C2410 - help - RTC (Realtime Clock) driver for the clock inbuilt into the - Samsung S3C2410. This can provide periodic interrupt rates - from 1Hz to 64Hz for user programs, and wakeup from Alarm. - config COBALT_LCD bool "Support for Cobalt LCD" depends on MIPS_COBALT diff --git a/drivers/char/Makefile b/drivers/char/Makefile index 6e0f4469d8b..19114df59bb 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -42,15 +42,18 @@ obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o obj-$(CONFIG_SX) += sx.o generic_serial.o obj-$(CONFIG_RIO) += rio/ generic_serial.o obj-$(CONFIG_HVC_CONSOLE) += hvc_vio.o hvsi.o +obj-$(CONFIG_HVC_ISERIES) += hvc_iseries.o obj-$(CONFIG_HVC_RTAS) += hvc_rtas.o obj-$(CONFIG_HVC_DRIVER) += hvc_console.o obj-$(CONFIG_RAW_DRIVER) += raw.o obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o +obj-$(CONFIG_MSPEC) += mspec.o obj-$(CONFIG_MMTIMER) += mmtimer.o obj-$(CONFIG_VIOCONS) += viocons.o obj-$(CONFIG_VIOTAPE) += viotape.o obj-$(CONFIG_HVCS) += hvcs.o obj-$(CONFIG_SGI_MBCS) += mbcs.o +obj-$(CONFIG_BRIQ_PANEL) += briq_panel.o obj-$(CONFIG_PRINTER) += lp.o obj-$(CONFIG_TIPAR) += tipar.o @@ -66,7 +69,6 @@ obj-$(CONFIG_EFI_RTC) += efirtc.o obj-$(CONFIG_SGI_DS1286) += ds1286.o obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o obj-$(CONFIG_DS1302) += ds1302.o -obj-$(CONFIG_S3C2410_RTC) += s3c2410-rtc.o ifeq ($(CONFIG_GENERIC_NVRAM),y) obj-$(CONFIG_NVRAM) += generic_nvram.o else diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h index 3c623b67ea1..8b3317fd46c 100644 --- a/drivers/char/agp/agp.h +++ b/drivers/char/agp/agp.h @@ -117,7 +117,7 @@ struct agp_bridge_driver { }; struct agp_bridge_data { - struct agp_version *version; + const struct agp_version *version; struct agp_bridge_driver *driver; struct vm_operations_struct *vm_ops; void *previous_size; diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c index 509adc40325..d59e037ddd1 100644 --- a/drivers/char/agp/backend.c +++ b/drivers/char/agp/backend.c @@ -44,7 +44,7 @@ * past 0.99 at all due to some boolean logic error. */ #define AGPGART_VERSION_MAJOR 0 #define AGPGART_VERSION_MINOR 101 -static struct agp_version agp_current_version = +static const struct agp_version agp_current_version = { .major = AGPGART_VERSION_MAJOR, .minor = AGPGART_VERSION_MINOR, diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c index b788b0a3bbf..30f730ff81c 100644 --- a/drivers/char/agp/efficeon-agp.c +++ b/drivers/char/agp/efficeon-agp.c @@ -337,13 +337,6 @@ static struct agp_bridge_driver efficeon_driver = { .agp_destroy_page = agp_generic_destroy_page, }; - -static int agp_efficeon_resume(struct pci_dev *pdev) -{ - printk(KERN_DEBUG PFX "agp_efficeon_resume()\n"); - return efficeon_configure(); -} - static int __devinit agp_efficeon_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -414,11 +407,18 @@ static void __devexit agp_efficeon_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } +#ifdef CONFIG_PM static int agp_efficeon_suspend(struct pci_dev *dev, pm_message_t state) { return 0; } +static int agp_efficeon_resume(struct pci_dev *pdev) +{ + printk(KERN_DEBUG PFX "agp_efficeon_resume()\n"); + return efficeon_configure(); +} +#endif static struct pci_device_id agp_efficeon_pci_table[] = { { @@ -439,8 +439,10 @@ static struct pci_driver agp_efficeon_pci_driver = { .id_table = agp_efficeon_pci_table, .probe = agp_efficeon_probe, .remove = agp_efficeon_remove, +#ifdef CONFIG_PM .suspend = agp_efficeon_suspend, .resume = agp_efficeon_resume, +#endif }; static int __init agp_efficeon_init(void) diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c index d9c5a9142ad..0f2ed2aa2d8 100644 --- a/drivers/char/agp/frontend.c +++ b/drivers/char/agp/frontend.c @@ -151,35 +151,12 @@ static void agp_add_seg_to_client(struct agp_client *client, client->segments = seg; } -/* Originally taken from linux/mm/mmap.c from the array - * protection_map. - * The original really should be exported to modules, or - * some routine which does the conversion for you - */ - -static const pgprot_t my_protect_map[16] = -{ - __P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111, - __S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111 -}; - static pgprot_t agp_convert_mmap_flags(int prot) { -#define _trans(x,bit1,bit2) \ -((bit1==bit2)?(x&bit1):(x&bit1)?bit2:0) - unsigned long prot_bits; - pgprot_t temp; - - prot_bits = _trans(prot, PROT_READ, VM_READ) | - _trans(prot, PROT_WRITE, VM_WRITE) | - _trans(prot, PROT_EXEC, VM_EXEC); - - prot_bits |= VM_SHARED; - temp = my_protect_map[prot_bits & 0x0000000f]; - - return temp; + prot_bits = calc_vm_prot_bits(prot) | VM_SHARED; + return vm_get_page_prot(prot_bits); } static int agp_create_segment(struct agp_client *client, struct agp_region *region) diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c index cc5ea347a8a..0dcdb363923 100644 --- a/drivers/char/agp/generic.c +++ b/drivers/char/agp/generic.c @@ -568,25 +568,34 @@ static void agp_v3_parse_one(u32 *requested_mode, u32 *bridge_agpstat, u32 *vga_ *bridge_agpstat &= ~(AGPSTAT3_4X | AGPSTAT3_RSVD); goto done; + } else if (*requested_mode & AGPSTAT3_4X) { + *bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD); + *bridge_agpstat |= AGPSTAT3_4X; + goto done; + } else { /* - * If we didn't specify AGPx8, we can only do x4. - * If the hardware can't do x4, we're up shit creek, and never - * should have got this far. + * If we didn't specify an AGP mode, we see if both + * the graphics card, and the bridge can do x8, and use if so. + * If not, we fall back to x4 mode. */ - *bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD); - if ((*bridge_agpstat & AGPSTAT3_4X) && (*vga_agpstat & AGPSTAT3_4X)) - *bridge_agpstat |= AGPSTAT3_4X; - else { - printk(KERN_INFO PFX "Badness. Don't know which AGP mode to set. " - "[bridge_agpstat:%x vga_agpstat:%x fell back to:- bridge_agpstat:%x vga_agpstat:%x]\n", - origbridge, origvga, *bridge_agpstat, *vga_agpstat); - if (!(*bridge_agpstat & AGPSTAT3_4X)) - printk(KERN_INFO PFX "Bridge couldn't do AGP x4.\n"); - if (!(*vga_agpstat & AGPSTAT3_4X)) - printk(KERN_INFO PFX "Graphic card couldn't do AGP x4.\n"); - return; + if ((*bridge_agpstat & AGPSTAT3_8X) && (*vga_agpstat & AGPSTAT3_8X)) { + printk(KERN_INFO PFX "No AGP mode specified. Setting to highest mode supported by bridge & card (x8).\n"); + *bridge_agpstat &= ~(AGPSTAT3_4X | AGPSTAT3_RSVD); + *vga_agpstat &= ~(AGPSTAT3_4X | AGPSTAT3_RSVD); + } else { + printk(KERN_INFO PFX "Fell back to AGPx4 mode because"); + if (!(*bridge_agpstat & AGPSTAT3_8X)) { + printk("bridge couldn't do x8. bridge_agpstat:%x (orig=%x)\n", *bridge_agpstat, origbridge); + *bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD); + *bridge_agpstat |= AGPSTAT3_4X; + } + if (!(*vga_agpstat & AGPSTAT3_8X)) { + printk("graphics card couldn't do x8. vga_agpstat:%x (orig=%x)\n", *vga_agpstat, origvga); + *vga_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD); + *vga_agpstat |= AGPSTAT3_4X; + } } } diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index 61ac3809f99..d1ede7db5a1 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -2,14 +2,6 @@ * Intel AGPGART routines. */ -/* - * Intel(R) 855GM/852GM and 865G support added by David Dawes - * <dawes@tungstengraphics.com>. - * - * Intel(R) 915G/915GM support added by Alan Hourihane - * <alanh@tungstengraphics.com>. - */ - #include <linux/module.h> #include <linux/pci.h> #include <linux/init.h> @@ -17,6 +9,21 @@ #include <linux/agp_backend.h> #include "agp.h" +#define PCI_DEVICE_ID_INTEL_82946GZ_HB 0x2970 +#define PCI_DEVICE_ID_INTEL_82946GZ_IG 0x2972 +#define PCI_DEVICE_ID_INTEL_82965G_1_HB 0x2980 +#define PCI_DEVICE_ID_INTEL_82965G_1_IG 0x2982 +#define PCI_DEVICE_ID_INTEL_82965Q_HB 0x2990 +#define PCI_DEVICE_ID_INTEL_82965Q_IG 0x2992 +#define PCI_DEVICE_ID_INTEL_82965G_HB 0x29A0 +#define PCI_DEVICE_ID_INTEL_82965G_IG 0x29A2 + +#define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \ + agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_1_HB || \ + agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \ + agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB) + + /* Intel 815 register */ #define INTEL_815_APCONT 0x51 #define INTEL_815_ATTBASE_MASK ~0x1FFFFFFF @@ -40,6 +47,8 @@ #define I915_GMCH_GMS_STOLEN_48M (0x6 << 4) #define I915_GMCH_GMS_STOLEN_64M (0x7 << 4) +/* Intel 965G registers */ +#define I965_MSAC 0x62 /* Intel 7505 registers */ #define INTEL_I7505_APSIZE 0x74 @@ -354,6 +363,7 @@ static struct aper_size_info_fixed intel_i830_sizes[] = /* The 64M mode still requires a 128k gatt */ {64, 16384, 5}, {256, 65536, 6}, + {512, 131072, 7}, }; static struct _intel_i830_private { @@ -377,7 +387,11 @@ static void intel_i830_init_gtt_entries(void) /* We obtain the size of the GTT, which is also stored (for some * reason) at the top of stolen memory. Then we add 4KB to that * for the video BIOS popup, which is also stored in there. */ - size = agp_bridge->driver->fetch_size() + 4; + + if (IS_I965) + size = 512 + 4; + else + size = agp_bridge->driver->fetch_size() + 4; if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) { @@ -423,7 +437,7 @@ static void intel_i830_init_gtt_entries(void) if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB || - agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB) + agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965 ) gtt_entries = MB(48) - KB(size); else gtt_entries = 0; @@ -433,7 +447,7 @@ static void intel_i830_init_gtt_entries(void) if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB || - agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB) + agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965) gtt_entries = MB(64) - KB(size); else gtt_entries = 0; @@ -791,6 +805,77 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge) return 0; } +static int intel_i965_fetch_size(void) +{ + struct aper_size_info_fixed *values; + u32 offset = 0; + u8 temp; + +#define I965_512MB_ADDRESS_MASK (3<<1) + + values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes); + + pci_read_config_byte(intel_i830_private.i830_dev, I965_MSAC, &temp); + temp &= I965_512MB_ADDRESS_MASK; + switch (temp) { + case 0x00: + offset = 0; /* 128MB */ + break; + case 0x06: + offset = 3; /* 512MB */ + break; + default: + case 0x02: + offset = 2; /* 256MB */ + break; + } + + agp_bridge->previous_size = agp_bridge->current_size = (void *)(values + offset); + + return values[offset].size; +} + +/* The intel i965 automatically initializes the agp aperture during POST. ++ * Use the memory already set aside for in the GTT. ++ */ +static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge) +{ + int page_order; + struct aper_size_info_fixed *size; + int num_entries; + u32 temp; + + size = agp_bridge->current_size; + page_order = size->page_order; + num_entries = size->num_entries; + agp_bridge->gatt_table_real = NULL; + + pci_read_config_dword(intel_i830_private.i830_dev, I915_MMADDR, &temp); + + temp &= 0xfff00000; + intel_i830_private.gtt = ioremap((temp + (512 * 1024)) , 512 * 1024); + + if (!intel_i830_private.gtt) + return -ENOMEM; + + + intel_i830_private.registers = ioremap(temp,128 * 4096); + if (!intel_i830_private.registers) + return -ENOMEM; + + temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000; + global_cache_flush(); /* FIXME: ? */ + + /* we have to call this as early as possible after the MMIO base address is known */ + intel_i830_init_gtt_entries(); + + agp_bridge->gatt_table = NULL; + + agp_bridge->gatt_bus_addr = temp; + + return 0; +} + static int intel_fetch_size(void) { @@ -1307,7 +1392,7 @@ static struct agp_bridge_driver intel_830_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i830_sizes, .size_type = FIXED_APER_SIZE, - .num_aperture_sizes = 3, + .num_aperture_sizes = 4, .needs_scratch_page = TRUE, .configure = intel_i830_configure, .fetch_size = intel_i830_fetch_size, @@ -1469,7 +1554,7 @@ static struct agp_bridge_driver intel_915_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i830_sizes, .size_type = FIXED_APER_SIZE, - .num_aperture_sizes = 3, + .num_aperture_sizes = 4, .needs_scratch_page = TRUE, .configure = intel_i915_configure, .fetch_size = intel_i915_fetch_size, @@ -1489,6 +1574,29 @@ static struct agp_bridge_driver intel_915_driver = { .agp_destroy_page = agp_generic_destroy_page, }; +static struct agp_bridge_driver intel_i965_driver = { + .owner = THIS_MODULE, + .aperture_sizes = intel_i830_sizes, + .size_type = FIXED_APER_SIZE, + .num_aperture_sizes = 4, + .needs_scratch_page = TRUE, + .configure = intel_i915_configure, + .fetch_size = intel_i965_fetch_size, + .cleanup = intel_i915_cleanup, + .tlb_flush = intel_i810_tlbflush, + .mask_memory = intel_i810_mask_memory, + .masks = intel_i810_masks, + .agp_enable = intel_i810_agp_enable, + .cache_flush = global_cache_flush, + .create_gatt_table = intel_i965_create_gatt_table, + .free_gatt_table = intel_i830_free_gatt_table, + .insert_memory = intel_i915_insert_entries, + .remove_memory = intel_i915_remove_entries, + .alloc_by_type = intel_i830_alloc_by_type, + .free_by_type = intel_i810_free_by_type, + .agp_alloc_page = agp_generic_alloc_page, + .agp_destroy_page = agp_generic_destroy_page, +}; static struct agp_bridge_driver intel_7505_driver = { .owner = THIS_MODULE, @@ -1684,6 +1792,35 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, bridge->driver = &intel_845_driver; name = "945GM"; break; + case PCI_DEVICE_ID_INTEL_82946GZ_HB: + if (find_i830(PCI_DEVICE_ID_INTEL_82946GZ_IG)) + bridge->driver = &intel_i965_driver; + else + bridge->driver = &intel_845_driver; + name = "946GZ"; + break; + case PCI_DEVICE_ID_INTEL_82965G_1_HB: + if (find_i830(PCI_DEVICE_ID_INTEL_82965G_1_IG)) + bridge->driver = &intel_i965_driver; + else + bridge->driver = &intel_845_driver; + name = "965G"; + break; + case PCI_DEVICE_ID_INTEL_82965Q_HB: + if (find_i830(PCI_DEVICE_ID_INTEL_82965Q_IG)) + bridge->driver = &intel_i965_driver; + else + bridge->driver = &intel_845_driver; + name = "965Q"; + break; + case PCI_DEVICE_ID_INTEL_82965G_HB: + if (find_i830(PCI_DEVICE_ID_INTEL_82965G_IG)) + bridge->driver = &intel_i965_driver; + else + bridge->driver = &intel_845_driver; + name = "965G"; + break; + case PCI_DEVICE_ID_INTEL_7505_0: bridge->driver = &intel_7505_driver; name = "E7505"; @@ -1766,6 +1903,7 @@ static void __devexit agp_intel_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } +#ifdef CONFIG_PM static int agp_intel_resume(struct pci_dev *pdev) { struct agp_bridge_data *bridge = pci_get_drvdata(pdev); @@ -1786,9 +1924,12 @@ static int agp_intel_resume(struct pci_dev *pdev) intel_i830_configure(); else if (bridge->driver == &intel_810_driver) intel_i810_configure(); + else if (bridge->driver == &intel_i965_driver) + intel_i915_configure(); return 0; } +#endif static struct pci_device_id agp_intel_pci_table[] = { #define ID(x) \ @@ -1825,6 +1966,10 @@ static struct pci_device_id agp_intel_pci_table[] = { ID(PCI_DEVICE_ID_INTEL_82915GM_HB), ID(PCI_DEVICE_ID_INTEL_82945G_HB), ID(PCI_DEVICE_ID_INTEL_82945GM_HB), + ID(PCI_DEVICE_ID_INTEL_82946GZ_HB), + ID(PCI_DEVICE_ID_INTEL_82965G_1_HB), + ID(PCI_DEVICE_ID_INTEL_82965Q_HB), + ID(PCI_DEVICE_ID_INTEL_82965G_HB), { } }; @@ -1835,7 +1980,9 @@ static struct pci_driver agp_intel_pci_driver = { .id_table = agp_intel_pci_table, .probe = agp_intel_probe, .remove = __devexit_p(agp_intel_remove), +#ifdef CONFIG_PM .resume = agp_intel_resume, +#endif }; static int __init agp_intel_init(void) diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index 1de1b12043b..91b71e750ee 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -601,8 +601,8 @@ static int __devinit agp_uninorth_probe(struct pci_dev *pdev, uninorth_node = of_find_node_by_name(NULL, "u3"); } if (uninorth_node) { - int *revprop = (int *) - get_property(uninorth_node, "device-rev", NULL); + const int *revprop = get_property(uninorth_node, + "device-rev", NULL); if (revprop != NULL) uninorth_rev = *revprop & 0x3f; of_node_put(uninorth_node); diff --git a/drivers/char/agp/via-agp.c b/drivers/char/agp/via-agp.c index b8ec25d1747..c149ac9ce9a 100644 --- a/drivers/char/agp/via-agp.c +++ b/drivers/char/agp/via-agp.c @@ -9,7 +9,7 @@ #include <linux/agp_backend.h> #include "agp.h" -static struct pci_device_id agp_via_pci_table[]; +static const struct pci_device_id agp_via_pci_table[]; #define VIA_GARTCTRL 0x80 #define VIA_APSIZE 0x84 @@ -485,7 +485,7 @@ static int agp_via_resume(struct pci_dev *pdev) #endif /* CONFIG_PM */ /* must be the same order as name table above */ -static struct pci_device_id agp_via_pci_table[] = { +static const struct pci_device_id agp_via_pci_table[] = { #define ID(x) \ { \ .class = (PCI_CLASS_BRIDGE_HOST << 8), \ diff --git a/drivers/char/briq_panel.c b/drivers/char/briq_panel.c new file mode 100644 index 00000000000..b8c22255f6a --- /dev/null +++ b/drivers/char/briq_panel.c @@ -0,0 +1,271 @@ +/* + * Drivers for the Total Impact PPC based computer "BRIQ" + * by Dr. Karsten Jeppesen + * + */ + +#include <linux/module.h> + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/tty.h> +#include <linux/timer.h> +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/wait.h> +#include <linux/string.h> +#include <linux/slab.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/miscdevice.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/init.h> + +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/prom.h> + +#define BRIQ_PANEL_MINOR 156 +#define BRIQ_PANEL_VFD_IOPORT 0x0390 +#define BRIQ_PANEL_LED_IOPORT 0x0398 +#define BRIQ_PANEL_VER "1.1 (04/20/2002)" +#define BRIQ_PANEL_MSG0 "Loading Linux" + +static int vfd_is_open; +static unsigned char vfd[40]; +static int vfd_cursor; +static unsigned char ledpb, led; + +static void update_vfd(void) +{ + int i; + + /* cursor home */ + outb(0x02, BRIQ_PANEL_VFD_IOPORT); + for (i=0; i<20; i++) + outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1); + + /* cursor to next line */ + outb(0xc0, BRIQ_PANEL_VFD_IOPORT); + for (i=20; i<40; i++) + outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1); + +} + +static void set_led(char state) +{ + if (state == 'R') + led = 0x01; + else if (state == 'G') + led = 0x02; + else if (state == 'Y') + led = 0x03; + else if (state == 'X') + led = 0x00; + outb(led, BRIQ_PANEL_LED_IOPORT); +} + +static int briq_panel_open(struct inode *ino, struct file *filep) +{ + /* enforce single access */ + if (vfd_is_open) + return -EBUSY; + vfd_is_open = 1; + + return 0; +} + +static int briq_panel_release(struct inode *ino, struct file *filep) +{ + if (!vfd_is_open) + return -ENODEV; + + vfd_is_open = 0; + + return 0; +} + +static ssize_t briq_panel_read(struct file *file, char __user *buf, size_t count, + loff_t *ppos) +{ + unsigned short c; + unsigned char cp; + +#if 0 /* Can't seek (pread) on this device */ + if (ppos != &file->f_pos) + return -ESPIPE; +#endif + + if (!vfd_is_open) + return -ENODEV; + + c = (inb(BRIQ_PANEL_LED_IOPORT) & 0x000c) | (ledpb & 0x0003); + set_led(' '); + /* upper button released */ + if ((!(ledpb & 0x0004)) && (c & 0x0004)) { + cp = ' '; + ledpb = c; + if (copy_to_user(buf, &cp, 1)) + return -EFAULT; + return 1; + } + /* lower button released */ + else if ((!(ledpb & 0x0008)) && (c & 0x0008)) { + cp = '\r'; + ledpb = c; + if (copy_to_user(buf, &cp, 1)) + return -EFAULT; + return 1; + } else { + ledpb = c; + return 0; + } +} + +static void scroll_vfd( void ) +{ + int i; + + for (i=0; i<20; i++) { + vfd[i] = vfd[i+20]; + vfd[i+20] = ' '; + } + vfd_cursor = 20; +} + +static ssize_t briq_panel_write(struct file *file, const char __user *buf, size_t len, + loff_t *ppos) +{ + size_t indx = len; + int i, esc = 0; + +#if 0 /* Can't seek (pwrite) on this device */ + if (ppos != &file->f_pos) + return -ESPIPE; +#endif + + if (!vfd_is_open) + return -EBUSY; + + for (;;) { + char c; + if (!indx) + break; + if (get_user(c, buf)) + return -EFAULT; + if (esc) { + set_led(c); + esc = 0; + } else if (c == 27) { + esc = 1; + } else if (c == 12) { + /* do a form feed */ + for (i=0; i<40; i++) + vfd[i] = ' '; + vfd_cursor = 0; + } else if (c == 10) { + if (vfd_cursor < 20) + vfd_cursor = 20; + else if (vfd_cursor < 40) + vfd_cursor = 40; + else if (vfd_cursor < 60) + vfd_cursor = 60; + if (vfd_cursor > 59) + scroll_vfd(); + } else { + /* just a character */ + if (vfd_cursor > 39) + scroll_vfd(); + vfd[vfd_cursor++] = c; + } + indx--; + buf++; + } + update_vfd(); + + return len; +} + +static struct file_operations briq_panel_fops = { + .owner = THIS_MODULE, + .read = briq_panel_read, + .write = briq_panel_write, + .open = briq_panel_open, + .release = briq_panel_release, +}; + +static struct miscdevice briq_panel_miscdev = { + BRIQ_PANEL_MINOR, + "briq_panel", + &briq_panel_fops +}; + +static int __init briq_panel_init(void) +{ + struct device_node *root = find_path_device("/"); + const char *machine; + int i; + + machine = get_property(root, "model", NULL); + if (!machine || strncmp(machine, "TotalImpact,BRIQ-1", 18) != 0) + return -ENODEV; + + printk(KERN_INFO + "briq_panel: v%s Dr. Karsten Jeppesen (kj@totalimpact.com)\n", + BRIQ_PANEL_VER); + + if (!request_region(BRIQ_PANEL_VFD_IOPORT, 4, "BRIQ Front Panel")) + return -EBUSY; + + if (!request_region(BRIQ_PANEL_LED_IOPORT, 2, "BRIQ Front Panel")) { + release_region(BRIQ_PANEL_VFD_IOPORT, 4); + return -EBUSY; + } + ledpb = inb(BRIQ_PANEL_LED_IOPORT) & 0x000c; + + if (misc_register(&briq_panel_miscdev) < 0) { + release_region(BRIQ_PANEL_VFD_IOPORT, 4); + release_region(BRIQ_PANEL_LED_IOPORT, 2); + return -EBUSY; + } + + outb(0x38, BRIQ_PANEL_VFD_IOPORT); /* Function set */ + outb(0x01, BRIQ_PANEL_VFD_IOPORT); /* Clear display */ + outb(0x0c, BRIQ_PANEL_VFD_IOPORT); /* Display on */ + outb(0x06, BRIQ_PANEL_VFD_IOPORT); /* Entry normal */ + for (i=0; i<40; i++) + vfd[i]=' '; +#ifndef MODULE + vfd[0] = 'L'; + vfd[1] = 'o'; + vfd[2] = 'a'; + vfd[3] = 'd'; + vfd[4] = 'i'; + vfd[5] = 'n'; + vfd[6] = 'g'; + vfd[7] = ' '; + vfd[8] = '.'; + vfd[9] = '.'; + vfd[10] = '.'; +#endif /* !MODULE */ + + update_vfd(); + + return 0; +} + +static void __exit briq_panel_exit(void) +{ + misc_deregister(&briq_panel_miscdev); + release_region(BRIQ_PANEL_VFD_IOPORT, 4); + release_region(BRIQ_PANEL_LED_IOPORT, 2); +} + +module_init(briq_panel_init); +module_exit(briq_panel_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Karsten Jeppesen <karsten@jeppesens.com>"); +MODULE_DESCRIPTION("Driver for the Total Impact briQ front panel"); diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c index 5e59c0b4273..4711d9b3a59 100644 --- a/drivers/char/generic_serial.c +++ b/drivers/char/generic_serial.c @@ -746,11 +746,9 @@ void gs_set_termios (struct tty_struct * tty, gs_dprintk (GS_DEBUG_TERMIOS, "termios structure (%p):\n", tiosp); } -#if 0 /* This is an optimization that is only allowed for dumb cards */ /* Smart cards require knowledge of iflags and oflags too: that might change hardware cooking mode.... */ -#endif if (old_termios) { if( (tiosp->c_iflag == old_termios->c_iflag) && (tiosp->c_oflag == old_termios->c_oflag) @@ -774,14 +772,7 @@ void gs_set_termios (struct tty_struct * tty, if(!memcmp(tiosp->c_cc, old_termios->c_cc, NCC)) printk("c_cc changed\n"); } - baudrate = tiosp->c_cflag & CBAUD; - if (baudrate & CBAUDEX) { - baudrate &= ~CBAUDEX; - if ((baudrate < 1) || (baudrate > 4)) - tiosp->c_cflag &= ~CBAUDEX; - else - baudrate += 15; - } + baudrate = tty_get_baud_rate(tty); baudrate = gs_baudrates[baudrate]; if ((tiosp->c_cflag & CBAUD) == B38400) { diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index 8afba339f05..58b0eb58111 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -868,8 +868,8 @@ int hpet_alloc(struct hpet_data *hdp) do_div(temp, period); hpetp->hp_tick_freq = temp; /* ticks per second */ - printk(KERN_INFO "hpet%d: at MMIO 0x%lx (virtual 0x%p), IRQ%s", - hpetp->hp_which, hdp->hd_phys_address, hdp->hd_address, + printk(KERN_INFO "hpet%d: at MMIO 0x%lx, IRQ%s", + hpetp->hp_which, hdp->hd_phys_address, hpetp->hp_ntimer > 1 ? "s" : ""); for (i = 0; i < hpetp->hp_ntimer; i++) printk("%s %d", i > 0 ? "," : "", hdp->hd_irq[i]); diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c index 613d67f1c7f..a76d2c40dd5 100644 --- a/drivers/char/hvc_console.c +++ b/drivers/char/hvc_console.c @@ -80,7 +80,8 @@ struct hvc_struct { struct tty_struct *tty; unsigned int count; int do_wakeup; - char outbuf[N_OUTBUF] __ALIGNED__; + char *outbuf; + int outbuf_size; int n_outbuf; uint32_t vtermno; struct hv_ops *ops; @@ -319,10 +320,8 @@ static int hvc_open(struct tty_struct *tty, struct file * filp) struct kobject *kobjp; /* Auto increments kobject reference if found. */ - if (!(hp = hvc_get_by_index(tty->index))) { - printk(KERN_WARNING "hvc_console: tty open failed, no vty associated with tty.\n"); + if (!(hp = hvc_get_by_index(tty->index))) return -ENODEV; - } spin_lock_irqsave(&hp->lock, flags); /* Check and then increment for fast path open. */ @@ -505,7 +504,7 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count if (hp->n_outbuf > 0) hvc_push(hp); - while (count > 0 && (rsize = N_OUTBUF - hp->n_outbuf) > 0) { + while (count > 0 && (rsize = hp->outbuf_size - hp->n_outbuf) > 0) { if (rsize > count) rsize = count; memcpy(hp->outbuf + hp->n_outbuf, buf, rsize); @@ -538,7 +537,7 @@ static int hvc_write_room(struct tty_struct *tty) if (!hp) return -1; - return N_OUTBUF - hp->n_outbuf; + return hp->outbuf_size - hp->n_outbuf; } static int hvc_chars_in_buffer(struct tty_struct *tty) @@ -729,12 +728,13 @@ static struct kobj_type hvc_kobj_type = { }; struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq, - struct hv_ops *ops) + struct hv_ops *ops, int outbuf_size) { struct hvc_struct *hp; int i; - hp = kmalloc(sizeof(*hp), GFP_KERNEL); + hp = kmalloc(ALIGN(sizeof(*hp), sizeof(long)) + outbuf_size, + GFP_KERNEL); if (!hp) return ERR_PTR(-ENOMEM); @@ -743,6 +743,8 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq, hp->vtermno = vtermno; hp->irq = irq; hp->ops = ops; + hp->outbuf_size = outbuf_size; + hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeof(long))]; kobject_init(&hp->kobj); hp->kobj.ktype = &hvc_kobj_type; diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h index 96b7401319c..8c59818050e 100644 --- a/drivers/char/hvc_console.h +++ b/drivers/char/hvc_console.h @@ -56,7 +56,7 @@ extern int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops); /* register a vterm for hvc tty operation (module_init or hotplug add) */ extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int irq, - struct hv_ops *ops); + struct hv_ops *ops, int outbuf_size); /* remove a vterm from hvc tty operation (modele_exit or hotplug remove) */ extern int __devexit hvc_remove(struct hvc_struct *hp); diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c new file mode 100644 index 00000000000..4747729459c --- /dev/null +++ b/drivers/char/hvc_iseries.c @@ -0,0 +1,594 @@ +/* + * iSeries vio driver interface to hvc_console.c + * + * This code is based heavily on hvc_vio.c and viocons.c + * + * Copyright (C) 2006 Stephen Rothwell, IBM Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <stdarg.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/console.h> + +#include <asm/hvconsole.h> +#include <asm/vio.h> +#include <asm/prom.h> +#include <asm/iseries/vio.h> +#include <asm/iseries/hv_call.h> +#include <asm/iseries/hv_lp_config.h> +#include <asm/iseries/hv_lp_event.h> + +#include "hvc_console.h" + +#define VTTY_PORTS 10 + +static DEFINE_SPINLOCK(consolelock); +static DEFINE_SPINLOCK(consoleloglock); + +static const char hvc_driver_name[] = "hvc_console"; + +#define IN_BUF_SIZE 200 + +/* + * Our port information. + */ +static struct port_info { + HvLpIndex lp; + u64 seq; /* sequence number of last HV send */ + u64 ack; /* last ack from HV */ + struct hvc_struct *hp; + int in_start; + int in_end; + unsigned char in_buf[IN_BUF_SIZE]; +} port_info[VTTY_PORTS] = { + [ 0 ... VTTY_PORTS - 1 ] = { + .lp = HvLpIndexInvalid + } +}; + +#define viochar_is_console(pi) ((pi) == &port_info[0]) + +static struct vio_device_id hvc_driver_table[] __devinitdata = { + {"serial", "IBM,iSeries-vty"}, + { "", "" } +}; +MODULE_DEVICE_TABLE(vio, hvc_driver_table); + +static void hvlog(char *fmt, ...) +{ + int i; + unsigned long flags; + va_list args; + static char buf[256]; + + spin_lock_irqsave(&consoleloglock, flags); + va_start(args, fmt); + i = vscnprintf(buf, sizeof(buf) - 1, fmt, args); + va_end(args); + buf[i++] = '\r'; + HvCall_writeLogBuffer(buf, i); + spin_unlock_irqrestore(&consoleloglock, flags); +} + +/* + * Initialize the common fields in a charLpEvent + */ +static void init_data_event(struct viocharlpevent *viochar, HvLpIndex lp) +{ + struct HvLpEvent *hev = &viochar->event; + + memset(viochar, 0, sizeof(struct viocharlpevent)); + + hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DEFERRED_ACK | + HV_LP_EVENT_INT; + hev->xType = HvLpEvent_Type_VirtualIo; + hev->xSubtype = viomajorsubtype_chario | viochardata; + hev->xSourceLp = HvLpConfig_getLpIndex(); + hev->xTargetLp = lp; + hev->xSizeMinus1 = sizeof(struct viocharlpevent); + hev->xSourceInstanceId = viopath_sourceinst(lp); + hev->xTargetInstanceId = viopath_targetinst(lp); +} + +static int get_chars(uint32_t vtermno, char *buf, int count) +{ + struct port_info *pi; + int n = 0; + unsigned long flags; + + if (vtermno >= VTTY_PORTS) + return -EINVAL; + if (count == 0) + return 0; + + pi = &port_info[vtermno]; + spin_lock_irqsave(&consolelock, flags); + + if (pi->in_end == 0) + goto done; + + n = pi->in_end - pi->in_start; + if (n > count) + n = count; + memcpy(buf, &pi->in_buf[pi->in_start], n); + pi->in_start += n; + if (pi->in_start == pi->in_end) { + pi->in_start = 0; + pi->in_end = 0; + } +done: + spin_unlock_irqrestore(&consolelock, flags); + return n; +} + +static int put_chars(uint32_t vtermno, const char *buf, int count) +{ + struct viocharlpevent *viochar; + struct port_info *pi; + HvLpEvent_Rc hvrc; + unsigned long flags; + int sent = 0; + + if (vtermno >= VTTY_PORTS) + return -EINVAL; + + pi = &port_info[vtermno]; + + spin_lock_irqsave(&consolelock, flags); + + if (viochar_is_console(pi) && !viopath_isactive(pi->lp)) { + spin_lock_irqsave(&consoleloglock, flags); + HvCall_writeLogBuffer(buf, count); + spin_unlock_irqrestore(&consoleloglock, flags); + sent = count; + goto done; + } + + viochar = vio_get_event_buffer(viomajorsubtype_chario); + if (viochar == NULL) { + hvlog("\n\rviocons: Can't get viochar buffer."); + goto done; + } + + while ((count > 0) && ((pi->seq - pi->ack) < VIOCHAR_WINDOW)) { + int len; + + len = (count > VIOCHAR_MAX_DATA) ? VIOCHAR_MAX_DATA : count; + + if (viochar_is_console(pi)) { + spin_lock_irqsave(&consoleloglock, flags); + HvCall_writeLogBuffer(buf, len); + spin_unlock_irqrestore(&consoleloglock, flags); + } + + init_data_event(viochar, pi->lp); + + viochar->len = len; + viochar->event.xCorrelationToken = pi->seq++; + viochar->event.xSizeMinus1 = + offsetof(struct viocharlpevent, data) + len; + + memcpy(viochar->data, buf, len); + + hvrc = HvCallEvent_signalLpEvent(&viochar->event); + if (hvrc) + hvlog("\n\rerror sending event! return code %d\n\r", + (int)hvrc); + sent += len; + count -= len; + buf += len; + } + + vio_free_event_buffer(viomajorsubtype_chario, viochar); +done: + spin_unlock_irqrestore(&consolelock, flags); + return sent; +} + +static struct hv_ops hvc_get_put_ops = { + .get_chars = get_chars, + .put_chars = put_chars, +}; + +static int __devinit hvc_vio_probe(struct vio_dev *vdev, + const struct vio_device_id *id) +{ + struct hvc_struct *hp; + struct port_info *pi; + + /* probed with invalid parameters. */ + if (!vdev || !id) + return -EPERM; + + if (vdev->unit_address >= VTTY_PORTS) + return -ENODEV; + + pi = &port_info[vdev->unit_address]; + + hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops, + VIOCHAR_MAX_DATA); + if (IS_ERR(hp)) + return PTR_ERR(hp); + pi->hp = hp; + dev_set_drvdata(&vdev->dev, pi); + + return 0; +} + +static int __devexit hvc_vio_remove(struct vio_dev *vdev) +{ + struct port_info *pi = dev_get_drvdata(&vdev->dev); + struct hvc_struct *hp = pi->hp; + + return hvc_remove(hp); +} + +static struct vio_driver hvc_vio_driver = { + .id_table = hvc_driver_table, + .probe = hvc_vio_probe, + .remove = hvc_vio_remove, + .driver = { + .name = hvc_driver_name, + .owner = THIS_MODULE, + } +}; + +static void hvc_open_event(struct HvLpEvent *event) +{ + unsigned long flags; + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + u8 port = cevent->virtual_device; + struct port_info *pi; + int reject = 0; + + if (hvlpevent_is_ack(event)) { + if (port >= VTTY_PORTS) + return; + + spin_lock_irqsave(&consolelock, flags); + + pi = &port_info[port]; + if (event->xRc == HvLpEvent_Rc_Good) { + pi->seq = pi->ack = 0; + /* + * This line allows connections from the primary + * partition but once one is connected from the + * primary partition nothing short of a reboot + * of linux will allow access from the hosting + * partition again without a required iSeries fix. + */ + pi->lp = event->xTargetLp; + } + + spin_unlock_irqrestore(&consolelock, flags); + if (event->xRc != HvLpEvent_Rc_Good) + printk(KERN_WARNING + "hvc: handle_open_event: event->xRc == (%d).\n", + event->xRc); + + if (event->xCorrelationToken != 0) { + atomic_t *aptr= (atomic_t *)event->xCorrelationToken; + atomic_set(aptr, 1); + } else + printk(KERN_WARNING + "hvc: weird...got open ack without atomic\n"); + return; + } + + /* This had better require an ack, otherwise complain */ + if (!hvlpevent_need_ack(event)) { + printk(KERN_WARNING "hvc: viocharopen without ack bit!\n"); + return; + } + + spin_lock_irqsave(&consolelock, flags); + + /* Make sure this is a good virtual tty */ + if (port >= VTTY_PORTS) { + event->xRc = HvLpEvent_Rc_SubtypeError; + cevent->subtype_result_code = viorc_openRejected; + /* + * Flag state here since we can't printk while holding + * the consolelock spinlock. + */ + reject = 1; + } else { + pi = &port_info[port]; + if ((pi->lp != HvLpIndexInvalid) && + (pi->lp != event->xSourceLp)) { + /* + * If this is tty is already connected to a different + * partition, fail. + */ + event->xRc = HvLpEvent_Rc_SubtypeError; + cevent->subtype_result_code = viorc_openRejected; + reject = 2; + } else { + pi->lp = event->xSourceLp; + event->xRc = HvLpEvent_Rc_Good; + cevent->subtype_result_code = viorc_good; + pi->seq = pi->ack = 0; + } + } + + spin_unlock_irqrestore(&consolelock, flags); + + if (reject == 1) + printk(KERN_WARNING "hvc: open rejected: bad virtual tty.\n"); + else if (reject == 2) + printk(KERN_WARNING "hvc: open rejected: console in exclusive " + "use by another partition.\n"); + + /* Return the acknowledgement */ + HvCallEvent_ackLpEvent(event); +} + +/* + * Handle a close charLpEvent. This should ONLY be an Interrupt because the + * virtual console should never actually issue a close event to the hypervisor + * because the virtual console never goes away. A close event coming from the + * hypervisor simply means that there are no client consoles connected to the + * virtual console. + */ +static void hvc_close_event(struct HvLpEvent *event) +{ + unsigned long flags; + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + u8 port = cevent->virtual_device; + + if (!hvlpevent_is_int(event)) { + printk(KERN_WARNING + "hvc: got unexpected close acknowlegement\n"); + return; + } + + if (port >= VTTY_PORTS) { + printk(KERN_WARNING + "hvc: close message from invalid virtual device.\n"); + return; + } + + /* For closes, just mark the console partition invalid */ + spin_lock_irqsave(&consolelock, flags); + + if (port_info[port].lp == event->xSourceLp) + port_info[port].lp = HvLpIndexInvalid; + + spin_unlock_irqrestore(&consolelock, flags); +} + +static void hvc_data_event(struct HvLpEvent *event) +{ + unsigned long flags; + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + struct port_info *pi; + int n; + u8 port = cevent->virtual_device; + + if (port >= VTTY_PORTS) { + printk(KERN_WARNING "hvc: data on invalid virtual device %d\n", + port); + return; + } + if (cevent->len == 0) + return; + + /* + * Change 05/01/2003 - Ryan Arnold: If a partition other than + * the current exclusive partition tries to send us data + * events then just drop them on the floor because we don't + * want his stinking data. He isn't authorized to receive + * data because he wasn't the first one to get the console, + * therefore he shouldn't be allowed to send data either. + * This will work without an iSeries fix. + */ + pi = &port_info[port]; + if (pi->lp != event->xSourceLp) + return; + + spin_lock_irqsave(&consolelock, flags); + + n = IN_BUF_SIZE - pi->in_end; + if (n > cevent->len) + n = cevent->len; + if (n > 0) { + memcpy(&pi->in_buf[pi->in_end], cevent->data, n); + pi->in_end += n; + } + spin_unlock_irqrestore(&consolelock, flags); + if (n == 0) + printk(KERN_WARNING "hvc: input buffer overflow\n"); +} + +static void hvc_ack_event(struct HvLpEvent *event) +{ + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + unsigned long flags; + u8 port = cevent->virtual_device; + + if (port >= VTTY_PORTS) { + printk(KERN_WARNING "hvc: data on invalid virtual device\n"); + return; + } + + spin_lock_irqsave(&consolelock, flags); + port_info[port].ack = event->xCorrelationToken; + spin_unlock_irqrestore(&consolelock, flags); +} + +static void hvc_config_event(struct HvLpEvent *event) +{ + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + + if (cevent->data[0] == 0x01) + printk(KERN_INFO "hvc: window resized to %d: %d: %d: %d\n", + cevent->data[1], cevent->data[2], + cevent->data[3], cevent->data[4]); + else + printk(KERN_WARNING "hvc: unknown config event\n"); +} + +static void hvc_handle_event(struct HvLpEvent *event) +{ + int charminor; + + if (event == NULL) + return; + + charminor = event->xSubtype & VIOMINOR_SUBTYPE_MASK; + switch (charminor) { + case viocharopen: + hvc_open_event(event); + break; + case viocharclose: + hvc_close_event(event); + break; + case viochardata: + hvc_data_event(event); + break; + case viocharack: + hvc_ack_event(event); + break; + case viocharconfig: + hvc_config_event(event); + break; + default: + if (hvlpevent_is_int(event) && hvlpevent_need_ack(event)) { + event->xRc = HvLpEvent_Rc_InvalidSubtype; + HvCallEvent_ackLpEvent(event); + } + } +} + +static int send_open(HvLpIndex remoteLp, void *sem) +{ + return HvCallEvent_signalLpEventFast(remoteLp, + HvLpEvent_Type_VirtualIo, + viomajorsubtype_chario | viocharopen, + HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck, + viopath_sourceinst(remoteLp), + viopath_targetinst(remoteLp), + (u64)(unsigned long)sem, VIOVERSION << 16, + 0, 0, 0, 0); +} + +static int hvc_vio_init(void) +{ + atomic_t wait_flag; + int rc; + + /* +2 for fudge */ + rc = viopath_open(HvLpConfig_getPrimaryLpIndex(), + viomajorsubtype_chario, VIOCHAR_WINDOW + 2); + if (rc) + printk(KERN_WARNING "hvc: error opening to primary %d\n", rc); + + if (viopath_hostLp == HvLpIndexInvalid) + vio_set_hostlp(); + + /* + * And if the primary is not the same as the hosting LP, open to the + * hosting lp + */ + if ((viopath_hostLp != HvLpIndexInvalid) && + (viopath_hostLp != HvLpConfig_getPrimaryLpIndex())) { + printk(KERN_INFO "hvc: open path to hosting (%d)\n", + viopath_hostLp); + rc = viopath_open(viopath_hostLp, viomajorsubtype_chario, + VIOCHAR_WINDOW + 2); /* +2 for fudge */ + if (rc) + printk(KERN_WARNING + "error opening to partition %d: %d\n", + viopath_hostLp, rc); + } + + if (vio_setHandler(viomajorsubtype_chario, hvc_handle_event) < 0) + printk(KERN_WARNING + "hvc: error seting handler for console events!\n"); + + /* + * First, try to open the console to the hosting lp. + * Wait on a semaphore for the response. + */ + atomic_set(&wait_flag, 0); + if ((viopath_isactive(viopath_hostLp)) && + (send_open(viopath_hostLp, &wait_flag) == 0)) { + printk(KERN_INFO "hvc: hosting partition %d\n", viopath_hostLp); + while (atomic_read(&wait_flag) == 0) + mb(); + atomic_set(&wait_flag, 0); + } + + /* + * If we don't have an active console, try the primary + */ + if ((!viopath_isactive(port_info[0].lp)) && + (viopath_isactive(HvLpConfig_getPrimaryLpIndex())) && + (send_open(HvLpConfig_getPrimaryLpIndex(), &wait_flag) == 0)) { + printk(KERN_INFO "hvc: opening console to primary partition\n"); + while (atomic_read(&wait_flag) == 0) + mb(); + } + + /* Register as a vio device to receive callbacks */ + rc = vio_register_driver(&hvc_vio_driver); + + return rc; +} +module_init(hvc_vio_init); /* after drivers/char/hvc_console.c */ + +static void hvc_vio_exit(void) +{ + vio_unregister_driver(&hvc_vio_driver); +} +module_exit(hvc_vio_exit); + +/* the device tree order defines our numbering */ +static int hvc_find_vtys(void) +{ + struct device_node *vty; + int num_found = 0; + + for (vty = of_find_node_by_name(NULL, "vty"); vty != NULL; + vty = of_find_node_by_name(vty, "vty")) { + uint32_t *vtermno; + + /* We have statically defined space for only a certain number + * of console adapters. + */ + if ((num_found >= MAX_NR_HVC_CONSOLES) || + (num_found >= VTTY_PORTS)) + break; + + vtermno = (uint32_t *)get_property(vty, "reg", NULL); + if (!vtermno) + continue; + + if (!device_is_compatible(vty, "IBM,iSeries-vty")) + continue; + + if (num_found == 0) + add_preferred_console("hvc", 0, NULL); + hvc_instantiate(*vtermno, num_found, &hvc_get_put_ops); + ++num_found; + } + + return num_found; +} +console_initcall(hvc_find_vtys); diff --git a/drivers/char/hvc_rtas.c b/drivers/char/hvc_rtas.c index 57106e02fd2..4b97eaf1860 100644 --- a/drivers/char/hvc_rtas.c +++ b/drivers/char/hvc_rtas.c @@ -94,7 +94,7 @@ static int hvc_rtas_init(void) /* Allocate an hvc_struct for the console device we instantiated * earlier. Save off hp so that we can return it on exit */ - hp = hvc_alloc(hvc_rtas_cookie, NO_IRQ, &hvc_rtas_get_put_ops); + hp = hvc_alloc(hvc_rtas_cookie, NO_IRQ, &hvc_rtas_get_put_ops, 16); if (IS_ERR(hp)) return PTR_ERR(hp); diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c index 9add81ceb44..cc95941148f 100644 --- a/drivers/char/hvc_vio.c +++ b/drivers/char/hvc_vio.c @@ -90,7 +90,8 @@ static int __devinit hvc_vio_probe(struct vio_dev *vdev, if (!vdev || !id) return -EPERM; - hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops); + hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops, + MAX_VIO_PUT_CHARS); if (IS_ERR(hp)) return PTR_ERR(hp); dev_set_drvdata(&vdev->dev, hp); @@ -140,7 +141,7 @@ static int hvc_find_vtys(void) for (vty = of_find_node_by_name(NULL, "vty"); vty != NULL; vty = of_find_node_by_name(vty, "vty")) { - uint32_t *vtermno; + const uint32_t *vtermno; /* We have statically defined space for only a certain number * of console adapters. @@ -148,7 +149,7 @@ static int hvc_find_vtys(void) if (num_found >= MAX_NR_HVC_CONSOLES) break; - vtermno = (uint32_t *)get_property(vty, "reg", NULL); + vtermno = get_property(vty, "reg", NULL); if (!vtermno) continue; diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c index 017f755632a..a89a95fb5e4 100644 --- a/drivers/char/hvsi.c +++ b/drivers/char/hvsi.c @@ -1274,11 +1274,10 @@ static int __init hvsi_console_init(void) vty != NULL; vty = of_find_compatible_node(vty, "serial", "hvterm-protocol")) { struct hvsi_struct *hp; - uint32_t *vtermno; - uint32_t *irq; + const uint32_t *vtermno, *irq; - vtermno = (uint32_t *)get_property(vty, "reg", NULL); - irq = (uint32_t *)get_property(vty, "interrupts", NULL); + vtermno = get_property(vty, "reg", NULL); + irq = get_property(vty, "interrupts", NULL); if (!vtermno || !irq) continue; diff --git a/drivers/char/hw_random/intel-rng.c b/drivers/char/hw_random/intel-rng.c index ccd7e710223..8efbc9c0e54 100644 --- a/drivers/char/hw_random/intel-rng.c +++ b/drivers/char/hw_random/intel-rng.c @@ -50,6 +50,43 @@ #define INTEL_RNG_ADDR_LEN 3 /* + * LPC bridge PCI config space registers + */ +#define FWH_DEC_EN1_REG_OLD 0xe3 +#define FWH_DEC_EN1_REG_NEW 0xd9 /* high byte of 16-bit register */ +#define FWH_F8_EN_MASK 0x80 + +#define BIOS_CNTL_REG_OLD 0x4e +#define BIOS_CNTL_REG_NEW 0xdc +#define BIOS_CNTL_WRITE_ENABLE_MASK 0x01 +#define BIOS_CNTL_LOCK_ENABLE_MASK 0x02 + +/* + * Magic address at which Intel Firmware Hubs get accessed + */ +#define INTEL_FWH_ADDR 0xffff0000 +#define INTEL_FWH_ADDR_LEN 2 + +/* + * Intel Firmware Hub command codes (write to any address inside the device) + */ +#define INTEL_FWH_RESET_CMD 0xff /* aka READ_ARRAY */ +#define INTEL_FWH_READ_ID_CMD 0x90 + +/* + * Intel Firmware Hub Read ID command result addresses + */ +#define INTEL_FWH_MANUFACTURER_CODE_ADDRESS 0x000000 +#define INTEL_FWH_DEVICE_CODE_ADDRESS 0x000001 + +/* + * Intel Firmware Hub Read ID command result values + */ +#define INTEL_FWH_MANUFACTURER_CODE 0x89 +#define INTEL_FWH_DEVICE_CODE_8M 0xac +#define INTEL_FWH_DEVICE_CODE_4M 0xad + +/* * Data for PCI driver interface * * This data only exists for exporting the supported @@ -58,12 +95,50 @@ * want to register another driver on the same PCI id. */ static const struct pci_device_id pci_tbl[] = { - { 0x8086, 0x2418, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, - { 0x8086, 0x2428, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, - { 0x8086, 0x2430, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, - { 0x8086, 0x2448, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, - { 0x8086, 0x244e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, - { 0x8086, 0x245e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, +/* AA + { 0x8086, 0x2418, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, */ + { 0x8086, 0x2410, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* AA */ +/* AB + { 0x8086, 0x2428, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, */ + { 0x8086, 0x2420, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* AB */ +/* ?? + { 0x8086, 0x2430, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, */ +/* BAM, CAM, DBM, FBM, GxM + { 0x8086, 0x2448, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, */ + { 0x8086, 0x244c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* BAM */ + { 0x8086, 0x248c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* CAM */ + { 0x8086, 0x24cc, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* DBM */ + { 0x8086, 0x2641, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* FBM */ + { 0x8086, 0x27b9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* GxM */ + { 0x8086, 0x27bd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* GxM DH */ +/* BA, CA, DB, Ex, 6300, Fx, 631x/632x, Gx + { 0x8086, 0x244e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, */ + { 0x8086, 0x2440, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* BA */ + { 0x8086, 0x2480, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* CA */ + { 0x8086, 0x24c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* DB */ + { 0x8086, 0x24d0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* Ex */ + { 0x8086, 0x25a1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 6300 */ + { 0x8086, 0x2640, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* Fx */ + { 0x8086, 0x2670, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2671, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2672, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2673, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2674, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2675, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2676, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2677, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2678, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x2679, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x267a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x267b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x267c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x267d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x267e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x267f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* 631x/632x */ + { 0x8086, 0x27b8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* Gx */ +/* E + { 0x8086, 0x245e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, */ + { 0x8086, 0x2450, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* E */ { 0, }, /* terminate list */ }; MODULE_DEVICE_TABLE(pci, pci_tbl); @@ -138,22 +213,115 @@ static struct hwrng intel_rng = { }; +#ifdef CONFIG_SMP +static char __initdata waitflag; + +static void __init intel_init_wait(void *unused) +{ + while (waitflag) + cpu_relax(); +} +#endif + static int __init mod_init(void) { int err = -ENODEV; + unsigned i; + struct pci_dev *dev = NULL; void __iomem *mem; - u8 hw_status; + unsigned long flags; + u8 bios_cntl_off, fwh_dec_en1_off; + u8 bios_cntl_val = 0xff, fwh_dec_en1_val = 0xff; + u8 hw_status, mfc, dvc; - if (!pci_dev_present(pci_tbl)) + for (i = 0; !dev && pci_tbl[i].vendor; ++i) + dev = pci_get_device(pci_tbl[i].vendor, pci_tbl[i].device, NULL); + + if (!dev) goto out; /* Device not found. */ + /* Check for Intel 82802 */ + if (dev->device < 0x2640) { + fwh_dec_en1_off = FWH_DEC_EN1_REG_OLD; + bios_cntl_off = BIOS_CNTL_REG_OLD; + } else { + fwh_dec_en1_off = FWH_DEC_EN1_REG_NEW; + bios_cntl_off = BIOS_CNTL_REG_NEW; + } + + pci_read_config_byte(dev, fwh_dec_en1_off, &fwh_dec_en1_val); + pci_read_config_byte(dev, bios_cntl_off, &bios_cntl_val); + + mem = ioremap_nocache(INTEL_FWH_ADDR, INTEL_FWH_ADDR_LEN); + if (mem == NULL) { + pci_dev_put(dev); + err = -EBUSY; + goto out; + } + + /* + * Since the BIOS code/data is going to disappear from its normal + * location with the Read ID command, all activity on the system + * must be stopped until the state is back to normal. + */ +#ifdef CONFIG_SMP + set_mb(waitflag, 1); + if (smp_call_function(intel_init_wait, NULL, 1, 0) != 0) { + set_mb(waitflag, 0); + pci_dev_put(dev); + printk(KERN_ERR PFX "cannot run on all processors\n"); + err = -EAGAIN; + goto err_unmap; + } +#endif + local_irq_save(flags); + + if (!(fwh_dec_en1_val & FWH_F8_EN_MASK)) + pci_write_config_byte(dev, + fwh_dec_en1_off, + fwh_dec_en1_val | FWH_F8_EN_MASK); + if (!(bios_cntl_val & + (BIOS_CNTL_LOCK_ENABLE_MASK|BIOS_CNTL_WRITE_ENABLE_MASK))) + pci_write_config_byte(dev, + bios_cntl_off, + bios_cntl_val | BIOS_CNTL_WRITE_ENABLE_MASK); + + writeb(INTEL_FWH_RESET_CMD, mem); + writeb(INTEL_FWH_READ_ID_CMD, mem); + mfc = readb(mem + INTEL_FWH_MANUFACTURER_CODE_ADDRESS); + dvc = readb(mem + INTEL_FWH_DEVICE_CODE_ADDRESS); + writeb(INTEL_FWH_RESET_CMD, mem); + + if (!(bios_cntl_val & + (BIOS_CNTL_LOCK_ENABLE_MASK|BIOS_CNTL_WRITE_ENABLE_MASK))) + pci_write_config_byte(dev, bios_cntl_off, bios_cntl_val); + if (!(fwh_dec_en1_val & FWH_F8_EN_MASK)) + pci_write_config_byte(dev, fwh_dec_en1_off, fwh_dec_en1_val); + + local_irq_restore(flags); +#ifdef CONFIG_SMP + /* Tell other CPUs to resume. */ + set_mb(waitflag, 0); +#endif + + iounmap(mem); + pci_dev_put(dev); + + if (mfc != INTEL_FWH_MANUFACTURER_CODE || + (dvc != INTEL_FWH_DEVICE_CODE_8M && + dvc != INTEL_FWH_DEVICE_CODE_4M)) { + printk(KERN_ERR PFX "FWH not detected\n"); + err = -ENODEV; + goto out; + } + err = -ENOMEM; mem = ioremap(INTEL_RNG_ADDR, INTEL_RNG_ADDR_LEN); if (!mem) goto out; intel_rng.priv = (unsigned long)mem; - /* Check for Intel 82802 */ + /* Check for Random Number Generator */ err = -ENODEV; hw_status = hwstatus_get(mem); if ((hw_status & INTEL_RNG_PRESENT) == 0) diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c index 84dfc427813..6b4d82a4565 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -612,16 +612,6 @@ MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); #define MINOR2BRD(min) (((min) & 0xc0) >> 6) #define MINOR2PORT(min) ((min) & 0x3f) -/* - * Define a baud rate table that converts termios baud rate selector - * into the actual baud rate value. All baud rate calculations are based - * on the actual baud rate required. - */ -static unsigned int stli_baudrates[] = { - 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, - 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 -}; - /*****************************************************************************/ /* @@ -2747,15 +2737,7 @@ static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tio /* * Start of by setting the baud, char size, parity and stop bit info. */ - pp->baudout = tiosp->c_cflag & CBAUD; - if (pp->baudout & CBAUDEX) { - pp->baudout &= ~CBAUDEX; - if ((pp->baudout < 1) || (pp->baudout > 4)) - tiosp->c_cflag &= ~CBAUDEX; - else - pp->baudout += 15; - } - pp->baudout = stli_baudrates[pp->baudout]; + pp->baudout = tty_get_baud_rate(portp->tty); if ((tiosp->c_cflag & CBAUD) == B38400) { if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) pp->baudout = 57600; @@ -3488,7 +3470,7 @@ static int stli_initecp(stlibrd_t *brdp) */ EBRDENABLE(brdp); sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); - memcpy(&sig, sigsp, sizeof(cdkecpsig_t)); + memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); EBRDDISABLE(brdp); if (sig.magic != cpu_to_le32(ECP_MAGIC)) diff --git a/drivers/char/lp.c b/drivers/char/lp.c index f875fda3b08..1ecea7d448f 100644 --- a/drivers/char/lp.c +++ b/drivers/char/lp.c @@ -906,7 +906,7 @@ static int __init lp_init (void) lp_class = class_create(THIS_MODULE, "printer"); if (IS_ERR(lp_class)) { err = PTR_ERR(lp_class); - goto out_devfs; + goto out_reg; } if (parport_register_driver (&lp_driver)) { @@ -927,7 +927,7 @@ static int __init lp_init (void) out_class: class_destroy(lp_class); -out_devfs: +out_reg: unregister_chrdev(LP_MAJOR, "lp"); return err; } diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 917b2040266..6511012cbdc 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -238,6 +238,32 @@ static pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, } #endif +#ifndef CONFIG_MMU +static unsigned long get_unmapped_area_mem(struct file *file, + unsigned long addr, + unsigned long len, + unsigned long pgoff, + unsigned long flags) +{ + if (!valid_mmap_phys_addr_range(pgoff, len)) + return (unsigned long) -EINVAL; + return pgoff; +} + +/* can't do an in-place private mapping if there's no MMU */ +static inline int private_mapping_ok(struct vm_area_struct *vma) +{ + return vma->vm_flags & VM_MAYSHARE; +} +#else +#define get_unmapped_area_mem NULL + +static inline int private_mapping_ok(struct vm_area_struct *vma) +{ + return 1; +} +#endif + static int mmap_mem(struct file * file, struct vm_area_struct * vma) { size_t size = vma->vm_end - vma->vm_start; @@ -245,6 +271,9 @@ static int mmap_mem(struct file * file, struct vm_area_struct * vma) if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size)) return -EINVAL; + if (!private_mapping_ok(vma)) + return -ENOSYS; + vma->vm_page_prot = phys_mem_access_prot(file, vma->vm_pgoff, size, vma->vm_page_prot); @@ -522,7 +551,7 @@ static ssize_t write_kmem(struct file * file, const char __user * buf, return virtr + wrote; } -#if defined(CONFIG_ISA) || !defined(__mc68000__) +#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__) static ssize_t read_port(struct file * file, char __user * buf, size_t count, loff_t *ppos) { @@ -782,6 +811,7 @@ static const struct file_operations mem_fops = { .write = write_mem, .mmap = mmap_mem, .open = open_mem, + .get_unmapped_area = get_unmapped_area_mem, }; static const struct file_operations kmem_fops = { @@ -790,6 +820,7 @@ static const struct file_operations kmem_fops = { .write = write_kmem, .mmap = mmap_kmem, .open = open_kmem, + .get_unmapped_area = get_unmapped_area_mem, }; static const struct file_operations null_fops = { @@ -799,7 +830,7 @@ static const struct file_operations null_fops = { .splice_write = splice_write_null, }; -#if defined(CONFIG_ISA) || !defined(__mc68000__) +#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__) static const struct file_operations port_fops = { .llseek = memory_lseek, .read = read_port, @@ -815,6 +846,10 @@ static const struct file_operations zero_fops = { .mmap = mmap_zero, }; +/* + * capabilities for /dev/zero + * - permits private mappings, "copies" are taken of the source of zeros + */ static struct backing_dev_info zero_bdi = { .capabilities = BDI_CAP_MAP_COPY, }; @@ -862,14 +897,18 @@ static int memory_open(struct inode * inode, struct file * filp) switch (iminor(inode)) { case 1: filp->f_op = &mem_fops; + filp->f_mapping->backing_dev_info = + &directly_mappable_cdev_bdi; break; case 2: filp->f_op = &kmem_fops; + filp->f_mapping->backing_dev_info = + &directly_mappable_cdev_bdi; break; case 3: filp->f_op = &null_fops; break; -#if defined(CONFIG_ISA) || !defined(__mc68000__) +#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__) case 4: filp->f_op = &port_fops; break; @@ -916,7 +955,7 @@ static const struct { {1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops}, {2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops}, {3, "null", S_IRUGO | S_IWUGO, &null_fops}, -#if defined(CONFIG_ISA) || !defined(__mc68000__) +#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__) {4, "port", S_IRUSR | S_IWUSR | S_IRGRP, &port_fops}, #endif {5, "zero", S_IRUGO | S_IWUGO, &zero_fops}, diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c new file mode 100644 index 00000000000..5426b1e5595 --- /dev/null +++ b/drivers/char/mspec.c @@ -0,0 +1,421 @@ +/* + * Copyright (C) 2001-2006 Silicon Graphics, Inc. All rights + * reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License + * as published by the Free Software Foundation. + */ + +/* + * SN Platform Special Memory (mspec) Support + * + * This driver exports the SN special memory (mspec) facility to user + * processes. + * There are three types of memory made available thru this driver: + * fetchops, uncached and cached. + * + * Fetchops are atomic memory operations that are implemented in the + * memory controller on SGI SN hardware. + * + * Uncached are used for memory write combining feature of the ia64 + * cpu. + * + * Cached are used for areas of memory that are used as cached addresses + * on our partition and used as uncached addresses from other partitions. + * Due to a design constraint of the SN2 Shub, you can not have processors + * on the same FSB perform both a cached and uncached reference to the + * same cache line. These special memory cached regions prevent the + * kernel from ever dropping in a TLB entry and therefore prevent the + * processor from ever speculating a cache line from this page. + */ + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/miscdevice.h> +#include <linux/spinlock.h> +#include <linux/mm.h> +#include <linux/vmalloc.h> +#include <linux/string.h> +#include <linux/slab.h> +#include <linux/numa.h> +#include <asm/page.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/atomic.h> +#include <asm/tlbflush.h> +#include <asm/uncached.h> +#include <asm/sn/addrs.h> +#include <asm/sn/arch.h> +#include <asm/sn/mspec.h> +#include <asm/sn/sn_cpuid.h> +#include <asm/sn/io.h> +#include <asm/sn/bte.h> +#include <asm/sn/shubio.h> + + +#define FETCHOP_ID "SGI Fetchop," +#define CACHED_ID "Cached," +#define UNCACHED_ID "Uncached" +#define REVISION "4.0" +#define MSPEC_BASENAME "mspec" + +/* + * Page types allocated by the device. + */ +enum { + MSPEC_FETCHOP = 1, + MSPEC_CACHED, + MSPEC_UNCACHED +}; + +static int is_sn2; + +/* + * One of these structures is allocated when an mspec region is mmaped. The + * structure is pointed to by the vma->vm_private_data field in the vma struct. + * This structure is used to record the addresses of the mspec pages. + */ +struct vma_data { + atomic_t refcnt; /* Number of vmas sharing the data. */ + spinlock_t lock; /* Serialize access to the vma. */ + int count; /* Number of pages allocated. */ + int type; /* Type of pages allocated. */ + unsigned long maddr[0]; /* Array of MSPEC addresses. */ +}; + +/* used on shub2 to clear FOP cache in the HUB */ +static unsigned long scratch_page[MAX_NUMNODES]; +#define SH2_AMO_CACHE_ENTRIES 4 + +static inline int +mspec_zero_block(unsigned long addr, int len) +{ + int status; + + if (is_sn2) { + if (is_shub2()) { + int nid; + void *p; + int i; + + nid = nasid_to_cnodeid(get_node_number(__pa(addr))); + p = (void *)TO_AMO(scratch_page[nid]); + + for (i=0; i < SH2_AMO_CACHE_ENTRIES; i++) { + FETCHOP_LOAD_OP(p, FETCHOP_LOAD); + p += FETCHOP_VAR_SIZE; + } + } + + status = bte_copy(0, addr & ~__IA64_UNCACHED_OFFSET, len, + BTE_WACQUIRE | BTE_ZERO_FILL, NULL); + } else { + memset((char *) addr, 0, len); + status = 0; + } + return status; +} + +/* + * mspec_open + * + * Called when a device mapping is created by a means other than mmap + * (via fork, etc.). Increments the reference count on the underlying + * mspec data so it is not freed prematurely. + */ +static void +mspec_open(struct vm_area_struct *vma) +{ + struct vma_data *vdata; + + vdata = vma->vm_private_data; + atomic_inc(&vdata->refcnt); +} + +/* + * mspec_close + * + * Called when unmapping a device mapping. Frees all mspec pages + * belonging to the vma. + */ +static void +mspec_close(struct vm_area_struct *vma) +{ + struct vma_data *vdata; + int i, pages, result, vdata_size; + + vdata = vma->vm_private_data; + if (!atomic_dec_and_test(&vdata->refcnt)) + return; + + pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; + vdata_size = sizeof(struct vma_data) + pages * sizeof(long); + for (i = 0; i < pages; i++) { + if (vdata->maddr[i] == 0) + continue; + /* + * Clear the page before sticking it back + * into the pool. + */ + result = mspec_zero_block(vdata->maddr[i], PAGE_SIZE); + if (!result) + uncached_free_page(vdata->maddr[i]); + else + printk(KERN_WARNING "mspec_close(): " + "failed to zero page %i\n", + result); + } + + if (vdata_size <= PAGE_SIZE) + kfree(vdata); + else + vfree(vdata); +} + + +/* + * mspec_nopfn + * + * Creates a mspec page and maps it to user space. + */ +static unsigned long +mspec_nopfn(struct vm_area_struct *vma, unsigned long address) +{ + unsigned long paddr, maddr; + unsigned long pfn; + int index; + struct vma_data *vdata = vma->vm_private_data; + + index = (address - vma->vm_start) >> PAGE_SHIFT; + maddr = (volatile unsigned long) vdata->maddr[index]; + if (maddr == 0) { + maddr = uncached_alloc_page(numa_node_id()); + if (maddr == 0) + return NOPFN_OOM; + + spin_lock(&vdata->lock); + if (vdata->maddr[index] == 0) { + vdata->count++; + vdata->maddr[index] = maddr; + } else { + uncached_free_page(maddr); + maddr = vdata->maddr[index]; + } + spin_unlock(&vdata->lock); + } + + if (vdata->type == MSPEC_FETCHOP) + paddr = TO_AMO(maddr); + else + paddr = __pa(TO_CAC(maddr)); + + pfn = paddr >> PAGE_SHIFT; + + return pfn; +} + +static struct vm_operations_struct mspec_vm_ops = { + .open = mspec_open, + .close = mspec_close, + .nopfn = mspec_nopfn +}; + +/* + * mspec_mmap + * + * Called when mmaping the device. Initializes the vma with a fault handler + * and private data structure necessary to allocate, track, and free the + * underlying pages. + */ +static int +mspec_mmap(struct file *file, struct vm_area_struct *vma, int type) +{ + struct vma_data *vdata; + int pages, vdata_size; + + if (vma->vm_pgoff != 0) + return -EINVAL; + + if ((vma->vm_flags & VM_SHARED) == 0) + return -EINVAL; + + if ((vma->vm_flags & VM_WRITE) == 0) + return -EPERM; + + pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; + vdata_size = sizeof(struct vma_data) + pages * sizeof(long); + if (vdata_size <= PAGE_SIZE) + vdata = kmalloc(vdata_size, GFP_KERNEL); + else + vdata = vmalloc(vdata_size); + if (!vdata) + return -ENOMEM; + memset(vdata, 0, vdata_size); + + vdata->type = type; + spin_lock_init(&vdata->lock); + vdata->refcnt = ATOMIC_INIT(1); + vma->vm_private_data = vdata; + + vma->vm_flags |= (VM_IO | VM_LOCKED | VM_RESERVED | VM_PFNMAP); + if (vdata->type == MSPEC_FETCHOP || vdata->type == MSPEC_UNCACHED) + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + vma->vm_ops = &mspec_vm_ops; + + return 0; +} + +static int +fetchop_mmap(struct file *file, struct vm_area_struct *vma) +{ + return mspec_mmap(file, vma, MSPEC_FETCHOP); +} + +static int +cached_mmap(struct file *file, struct vm_area_struct *vma) +{ + return mspec_mmap(file, vma, MSPEC_CACHED); +} + +static int +uncached_mmap(struct file *file, struct vm_area_struct *vma) +{ + return mspec_mmap(file, vma, MSPEC_UNCACHED); +} + +static struct file_operations fetchop_fops = { + .owner = THIS_MODULE, + .mmap = fetchop_mmap +}; + +static struct miscdevice fetchop_miscdev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "sgi_fetchop", + .fops = &fetchop_fops +}; + +static struct file_operations cached_fops = { + .owner = THIS_MODULE, + .mmap = cached_mmap +}; + +static struct miscdevice cached_miscdev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "mspec_cached", + .fops = &cached_fops +}; + +static struct file_operations uncached_fops = { + .owner = THIS_MODULE, + .mmap = uncached_mmap +}; + +static struct miscdevice uncached_miscdev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "mspec_uncached", + .fops = &uncached_fops +}; + +/* + * mspec_init + * + * Called at boot time to initialize the mspec facility. + */ +static int __init +mspec_init(void) +{ + int ret; + int nid; + + /* + * The fetchop device only works on SN2 hardware, uncached and cached + * memory drivers should both be valid on all ia64 hardware + */ + if (ia64_platform_is("sn2")) { + is_sn2 = 1; + if (is_shub2()) { + ret = -ENOMEM; + for_each_online_node(nid) { + int actual_nid; + int nasid; + unsigned long phys; + + scratch_page[nid] = uncached_alloc_page(nid); + if (scratch_page[nid] == 0) + goto free_scratch_pages; + phys = __pa(scratch_page[nid]); + nasid = get_node_number(phys); + actual_nid = nasid_to_cnodeid(nasid); + if (actual_nid != nid) + goto free_scratch_pages; + } + } + + ret = misc_register(&fetchop_miscdev); + if (ret) { + printk(KERN_ERR + "%s: failed to register device %i\n", + FETCHOP_ID, ret); + goto free_scratch_pages; + } + } + ret = misc_register(&cached_miscdev); + if (ret) { + printk(KERN_ERR "%s: failed to register device %i\n", + CACHED_ID, ret); + if (is_sn2) + misc_deregister(&fetchop_miscdev); + goto free_scratch_pages; + } + ret = misc_register(&uncached_miscdev); + if (ret) { + printk(KERN_ERR "%s: failed to register device %i\n", + UNCACHED_ID, ret); + misc_deregister(&cached_miscdev); + if (is_sn2) + misc_deregister(&fetchop_miscdev); + goto free_scratch_pages; + } + + printk(KERN_INFO "%s %s initialized devices: %s %s %s\n", + MSPEC_BASENAME, REVISION, is_sn2 ? FETCHOP_ID : "", + CACHED_ID, UNCACHED_ID); + + return 0; + + free_scratch_pages: + for_each_node(nid) { + if (scratch_page[nid] != 0) + uncached_free_page(scratch_page[nid]); + } + return ret; +} + +static void __exit +mspec_exit(void) +{ + int nid; + + misc_deregister(&uncached_miscdev); + misc_deregister(&cached_miscdev); + if (is_sn2) { + misc_deregister(&fetchop_miscdev); + + for_each_node(nid) { + if (scratch_page[nid] != 0) + uncached_free_page(scratch_page[nid]); + } + } +} + +module_init(mspec_init); +module_exit(mspec_exit); + +MODULE_AUTHOR("Silicon Graphics, Inc. <linux-altix@sgi.com>"); +MODULE_DESCRIPTION("Driver for SGI SN special memory operations"); +MODULE_LICENSE("GPL"); diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c index 84e5a68635f..ecfaf180e5b 100644 --- a/drivers/char/pc8736x_gpio.c +++ b/drivers/char/pc8736x_gpio.c @@ -188,16 +188,6 @@ static void pc8736x_gpio_set(unsigned minor, int val) pc8736x_gpio_shadow[port] = val; } -static void pc8736x_gpio_set_high(unsigned index) -{ - pc8736x_gpio_set(index, 1); -} - -static void pc8736x_gpio_set_low(unsigned index) -{ - pc8736x_gpio_set(index, 0); -} - static int pc8736x_gpio_current(unsigned minor) { int port, bit; diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 579868af4a5..c596a08c07b 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -288,31 +288,34 @@ static struct cdev raw_cdev = { static int __init raw_init(void) { dev_t dev = MKDEV(RAW_MAJOR, 0); + int ret; - if (register_chrdev_region(dev, MAX_RAW_MINORS, "raw")) + ret = register_chrdev_region(dev, MAX_RAW_MINORS, "raw"); + if (ret) goto error; cdev_init(&raw_cdev, &raw_fops); - if (cdev_add(&raw_cdev, dev, MAX_RAW_MINORS)) { + ret = cdev_add(&raw_cdev, dev, MAX_RAW_MINORS); + if (ret) { kobject_put(&raw_cdev.kobj); - unregister_chrdev_region(dev, MAX_RAW_MINORS); - goto error; + goto error_region; } raw_class = class_create(THIS_MODULE, "raw"); if (IS_ERR(raw_class)) { printk(KERN_ERR "Error creating raw class.\n"); cdev_del(&raw_cdev); - unregister_chrdev_region(dev, MAX_RAW_MINORS); - goto error; + ret = PTR_ERR(raw_class); + goto error_region; } class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl"); return 0; +error_region: + unregister_chrdev_region(dev, MAX_RAW_MINORS); error: - printk(KERN_ERR "error register raw device\n"); - return 1; + return ret; } static void __exit raw_exit(void) diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c index 6e6a7c7a7ef..656f8c0ca52 100644 --- a/drivers/char/rtc.c +++ b/drivers/char/rtc.c @@ -209,11 +209,12 @@ static const unsigned char days_in_mo[] = */ static inline unsigned char rtc_is_updating(void) { + unsigned long flags; unsigned char uip; - spin_lock_irq(&rtc_lock); + spin_lock_irqsave(&rtc_lock, flags); uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP); - spin_unlock_irq(&rtc_lock); + spin_unlock_irqrestore(&rtc_lock, flags); return uip; } @@ -1261,10 +1262,8 @@ void rtc_get_rtc_time(struct rtc_time *rtc_tm) * Once the read clears, read the RTC time (again via ioctl). Easy. */ - while (rtc_is_updating() != 0 && jiffies - uip_watchdog < 2*HZ/100) { - barrier(); + while (rtc_is_updating() != 0 && jiffies - uip_watchdog < 2*HZ/100) cpu_relax(); - } /* * Only the values that we read from the RTC are set. We leave diff --git a/drivers/char/s3c2410-rtc.c b/drivers/char/s3c2410-rtc.c deleted file mode 100644 index 5458ef1634e..00000000000 --- a/drivers/char/s3c2410-rtc.c +++ /dev/null @@ -1,591 +0,0 @@ -/* drivers/char/s3c2410_rtc.c - * - * Copyright (c) 2004 Simtec Electronics <linux@simtec.co.uk> - * http://www.simtec.co.uk/products/SWLINUX/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * S3C2410 Internal RTC Driver - * - * Changelog: - * 08-Nov-2004 BJD Initial creation - * 12-Nov-2004 BJD Added periodic IRQ and PM code - * 22-Nov-2004 BJD Sign-test on alarm code to check for <0 - * 10-Mar-2005 LCVR Changed S3C2410_VA_RTC to S3C24XX_VA_RTC -*/ - -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/rtc.h> -#include <linux/bcd.h> -#include <linux/clk.h> - -#include <asm/hardware.h> -#include <asm/uaccess.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/rtc.h> - -#include <asm/mach/time.h> - -#include <asm/arch/regs-rtc.h> - -/* need this for the RTC_AF definitions */ -#include <linux/mc146818rtc.h> - -#undef S3C24XX_VA_RTC -#define S3C24XX_VA_RTC s3c2410_rtc_base - -static struct resource *s3c2410_rtc_mem; - -static void __iomem *s3c2410_rtc_base; -static int s3c2410_rtc_alarmno = NO_IRQ; -static int s3c2410_rtc_tickno = NO_IRQ; -static int s3c2410_rtc_freq = 1; - -static DEFINE_SPINLOCK(s3c2410_rtc_pie_lock); - -/* IRQ Handlers */ - -static irqreturn_t s3c2410_rtc_alarmirq(int irq, void *id, struct pt_regs *r) -{ - rtc_update(1, RTC_AF | RTC_IRQF); - return IRQ_HANDLED; -} - -static irqreturn_t s3c2410_rtc_tickirq(int irq, void *id, struct pt_regs *r) -{ - rtc_update(1, RTC_PF | RTC_IRQF); - return IRQ_HANDLED; -} - -/* Update control registers */ -static void s3c2410_rtc_setaie(int to) -{ - unsigned int tmp; - - pr_debug("%s: aie=%d\n", __FUNCTION__, to); - - tmp = readb(S3C2410_RTCALM); - - if (to) - tmp |= S3C2410_RTCALM_ALMEN; - else - tmp &= ~S3C2410_RTCALM_ALMEN; - - - writeb(tmp, S3C2410_RTCALM); -} - -static void s3c2410_rtc_setpie(int to) -{ - unsigned int tmp; - - pr_debug("%s: pie=%d\n", __FUNCTION__, to); - - spin_lock_irq(&s3c2410_rtc_pie_lock); - tmp = readb(S3C2410_TICNT) & ~S3C2410_TICNT_ENABLE; - - if (to) - tmp |= S3C2410_TICNT_ENABLE; - - writeb(tmp, S3C2410_TICNT); - spin_unlock_irq(&s3c2410_rtc_pie_lock); -} - -static void s3c2410_rtc_setfreq(int freq) -{ - unsigned int tmp; - - spin_lock_irq(&s3c2410_rtc_pie_lock); - tmp = readb(S3C2410_TICNT) & S3C2410_TICNT_ENABLE; - - s3c2410_rtc_freq = freq; - - tmp |= (128 / freq)-1; - - writeb(tmp, S3C2410_TICNT); - spin_unlock_irq(&s3c2410_rtc_pie_lock); -} - -/* Time read/write */ - -static int s3c2410_rtc_gettime(struct rtc_time *rtc_tm) -{ - unsigned int have_retried = 0; - - retry_get_time: - rtc_tm->tm_min = readb(S3C2410_RTCMIN); - rtc_tm->tm_hour = readb(S3C2410_RTCHOUR); - rtc_tm->tm_mday = readb(S3C2410_RTCDATE); - rtc_tm->tm_mon = readb(S3C2410_RTCMON); - rtc_tm->tm_year = readb(S3C2410_RTCYEAR); - rtc_tm->tm_sec = readb(S3C2410_RTCSEC); - - /* the only way to work out wether the system was mid-update - * when we read it is to check the second counter, and if it - * is zero, then we re-try the entire read - */ - - if (rtc_tm->tm_sec == 0 && !have_retried) { - have_retried = 1; - goto retry_get_time; - } - - pr_debug("read time %02x.%02x.%02x %02x/%02x/%02x\n", - rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday, - rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec); - - BCD_TO_BIN(rtc_tm->tm_sec); - BCD_TO_BIN(rtc_tm->tm_min); - BCD_TO_BIN(rtc_tm->tm_hour); - BCD_TO_BIN(rtc_tm->tm_mday); - BCD_TO_BIN(rtc_tm->tm_mon); - BCD_TO_BIN(rtc_tm->tm_year); - - rtc_tm->tm_year += 100; - rtc_tm->tm_mon -= 1; - - return 0; -} - - -static int s3c2410_rtc_settime(struct rtc_time *tm) -{ - /* the rtc gets round the y2k problem by just not supporting it */ - - if (tm->tm_year < 100) - return -EINVAL; - - writeb(BIN2BCD(tm->tm_sec), S3C2410_RTCSEC); - writeb(BIN2BCD(tm->tm_min), S3C2410_RTCMIN); - writeb(BIN2BCD(tm->tm_hour), S3C2410_RTCHOUR); - writeb(BIN2BCD(tm->tm_mday), S3C2410_RTCDATE); - writeb(BIN2BCD(tm->tm_mon + 1), S3C2410_RTCMON); - writeb(BIN2BCD(tm->tm_year - 100), S3C2410_RTCYEAR); - - return 0; -} - -static int s3c2410_rtc_getalarm(struct rtc_wkalrm *alrm) -{ - struct rtc_time *alm_tm = &alrm->time; - unsigned int alm_en; - - alm_tm->tm_sec = readb(S3C2410_ALMSEC); - alm_tm->tm_min = readb(S3C2410_ALMMIN); - alm_tm->tm_hour = readb(S3C2410_ALMHOUR); - alm_tm->tm_mon = readb(S3C2410_ALMMON); - alm_tm->tm_mday = readb(S3C2410_ALMDATE); - alm_tm->tm_year = readb(S3C2410_ALMYEAR); - - alm_en = readb(S3C2410_RTCALM); - - pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n", - alm_en, - alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday, - alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec); - - - /* decode the alarm enable field */ - - if (alm_en & S3C2410_RTCALM_SECEN) { - BCD_TO_BIN(alm_tm->tm_sec); - } else { - alm_tm->tm_sec = 0xff; - } - - if (alm_en & S3C2410_RTCALM_MINEN) { - BCD_TO_BIN(alm_tm->tm_min); - } else { - alm_tm->tm_min = 0xff; - } - - if (alm_en & S3C2410_RTCALM_HOUREN) { - BCD_TO_BIN(alm_tm->tm_hour); - } else { - alm_tm->tm_hour = 0xff; - } - - if (alm_en & S3C2410_RTCALM_DAYEN) { - BCD_TO_BIN(alm_tm->tm_mday); - } else { - alm_tm->tm_mday = 0xff; - } - - if (alm_en & S3C2410_RTCALM_MONEN) { - BCD_TO_BIN(alm_tm->tm_mon); - alm_tm->tm_mon -= 1; - } else { - alm_tm->tm_mon = 0xff; - } - - if (alm_en & S3C2410_RTCALM_YEAREN) { - BCD_TO_BIN(alm_tm->tm_year); - } else { - alm_tm->tm_year = 0xffff; - } - - /* todo - set alrm->enabled ? */ - - return 0; -} - -static int s3c2410_rtc_setalarm(struct rtc_wkalrm *alrm) -{ - struct rtc_time *tm = &alrm->time; - unsigned int alrm_en; - - pr_debug("s3c2410_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n", - alrm->enabled, - tm->tm_mday & 0xff, tm->tm_mon & 0xff, tm->tm_year & 0xff, - tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec); - - if (alrm->enabled || 1) { - alrm_en = readb(S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN; - writeb(0x00, S3C2410_RTCALM); - - if (tm->tm_sec < 60 && tm->tm_sec >= 0) { - alrm_en |= S3C2410_RTCALM_SECEN; - writeb(BIN2BCD(tm->tm_sec), S3C2410_ALMSEC); - } - - if (tm->tm_min < 60 && tm->tm_min >= 0) { - alrm_en |= S3C2410_RTCALM_MINEN; - writeb(BIN2BCD(tm->tm_min), S3C2410_ALMMIN); - } - - if (tm->tm_hour < 24 && tm->tm_hour >= 0) { - alrm_en |= S3C2410_RTCALM_HOUREN; - writeb(BIN2BCD(tm->tm_hour), S3C2410_ALMHOUR); - } - - pr_debug("setting S3C2410_RTCALM to %08x\n", alrm_en); - - writeb(alrm_en, S3C2410_RTCALM); - enable_irq_wake(s3c2410_rtc_alarmno); - } else { - alrm_en = readb(S3C2410_RTCALM); - alrm_en &= ~S3C2410_RTCALM_ALMEN; - writeb(alrm_en, S3C2410_RTCALM); - disable_irq_wake(s3c2410_rtc_alarmno); - } - - return 0; -} - -static int s3c2410_rtc_ioctl(unsigned int cmd, unsigned long arg) -{ - switch (cmd) { - case RTC_AIE_OFF: - case RTC_AIE_ON: - s3c2410_rtc_setaie((cmd == RTC_AIE_ON) ? 1 : 0); - return 0; - - case RTC_PIE_OFF: - case RTC_PIE_ON: - s3c2410_rtc_setpie((cmd == RTC_PIE_ON) ? 1 : 0); - return 0; - - case RTC_IRQP_READ: - return put_user(s3c2410_rtc_freq, (unsigned long __user *)arg); - - case RTC_IRQP_SET: - if (arg < 1 || arg > 64) - return -EINVAL; - - if (!capable(CAP_SYS_RESOURCE)) - return -EACCES; - - /* check for power of 2 */ - - if ((arg & (arg-1)) != 0) - return -EINVAL; - - pr_debug("s3c2410_rtc: setting frequency %ld\n", arg); - - s3c2410_rtc_setfreq(arg); - return 0; - - case RTC_UIE_ON: - case RTC_UIE_OFF: - return -EINVAL; - } - - return -EINVAL; -} - -static int s3c2410_rtc_proc(char *buf) -{ - unsigned int rtcalm = readb(S3C2410_RTCALM); - unsigned int ticnt = readb (S3C2410_TICNT); - char *p = buf; - - p += sprintf(p, "alarm_IRQ\t: %s\n", - (rtcalm & S3C2410_RTCALM_ALMEN) ? "yes" : "no" ); - p += sprintf(p, "periodic_IRQ\t: %s\n", - (ticnt & S3C2410_TICNT_ENABLE) ? "yes" : "no" ); - p += sprintf(p, "periodic_freq\t: %d\n", s3c2410_rtc_freq); - - return p - buf; -} - -static int s3c2410_rtc_open(void) -{ - int ret; - - ret = request_irq(s3c2410_rtc_alarmno, s3c2410_rtc_alarmirq, - IRQF_DISABLED, "s3c2410-rtc alarm", NULL); - - if (ret) - printk(KERN_ERR "IRQ%d already in use\n", s3c2410_rtc_alarmno); - - ret = request_irq(s3c2410_rtc_tickno, s3c2410_rtc_tickirq, - IRQF_DISABLED, "s3c2410-rtc tick", NULL); - - if (ret) { - printk(KERN_ERR "IRQ%d already in use\n", s3c2410_rtc_tickno); - goto tick_err; - } - - return ret; - - tick_err: - free_irq(s3c2410_rtc_alarmno, NULL); - return ret; -} - -static void s3c2410_rtc_release(void) -{ - /* do not clear AIE here, it may be needed for wake */ - - s3c2410_rtc_setpie(0); - free_irq(s3c2410_rtc_alarmno, NULL); - free_irq(s3c2410_rtc_tickno, NULL); -} - -static struct rtc_ops s3c2410_rtcops = { - .owner = THIS_MODULE, - .open = s3c2410_rtc_open, - .release = s3c2410_rtc_release, - .ioctl = s3c2410_rtc_ioctl, - .read_time = s3c2410_rtc_gettime, - .set_time = s3c2410_rtc_settime, - .read_alarm = s3c2410_rtc_getalarm, - .set_alarm = s3c2410_rtc_setalarm, - .proc = s3c2410_rtc_proc, -}; - -static void s3c2410_rtc_enable(struct platform_device *pdev, int en) -{ - unsigned int tmp; - - if (s3c2410_rtc_base == NULL) - return; - - if (!en) { - tmp = readb(S3C2410_RTCCON); - writeb(tmp & ~S3C2410_RTCCON_RTCEN, S3C2410_RTCCON); - - tmp = readb(S3C2410_TICNT); - writeb(tmp & ~S3C2410_TICNT_ENABLE, S3C2410_TICNT); - } else { - /* re-enable the device, and check it is ok */ - - if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0){ - dev_info(&pdev->dev, "rtc disabled, re-enabling\n"); - - tmp = readb(S3C2410_RTCCON); - writeb(tmp | S3C2410_RTCCON_RTCEN , S3C2410_RTCCON); - } - - if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)){ - dev_info(&pdev->dev, "removing S3C2410_RTCCON_CNTSEL\n"); - - tmp = readb(S3C2410_RTCCON); - writeb(tmp& ~S3C2410_RTCCON_CNTSEL , S3C2410_RTCCON); - } - - if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)){ - dev_info(&pdev->dev, "removing S3C2410_RTCCON_CLKRST\n"); - - tmp = readb(S3C2410_RTCCON); - writeb(tmp & ~S3C2410_RTCCON_CLKRST, S3C2410_RTCCON); - } - } -} - -static int s3c2410_rtc_remove(struct platform_device *dev) -{ - unregister_rtc(&s3c2410_rtcops); - - s3c2410_rtc_setpie(0); - s3c2410_rtc_setaie(0); - - if (s3c2410_rtc_mem != NULL) { - pr_debug("s3c2410_rtc: releasing s3c2410_rtc_mem\n"); - iounmap(s3c2410_rtc_base); - release_resource(s3c2410_rtc_mem); - kfree(s3c2410_rtc_mem); - } - - return 0; -} - -static int s3c2410_rtc_probe(struct platform_device *pdev) -{ - struct resource *res; - int ret; - - pr_debug("%s: probe=%p\n", __FUNCTION__, pdev); - - /* find the IRQs */ - - s3c2410_rtc_tickno = platform_get_irq(pdev, 1); - if (s3c2410_rtc_tickno < 0) { - dev_err(&pdev->dev, "no irq for rtc tick\n"); - return -ENOENT; - } - - s3c2410_rtc_alarmno = platform_get_irq(pdev, 0); - if (s3c2410_rtc_alarmno < 0) { - dev_err(&pdev->dev, "no irq for alarm\n"); - return -ENOENT; - } - - pr_debug("s3c2410_rtc: tick irq %d, alarm irq %d\n", - s3c2410_rtc_tickno, s3c2410_rtc_alarmno); - - /* get the memory region */ - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res == NULL) { - dev_err(&pdev->dev, "failed to get memory region resource\n"); - return -ENOENT; - } - - s3c2410_rtc_mem = request_mem_region(res->start, res->end-res->start+1, - pdev->name); - - if (s3c2410_rtc_mem == NULL) { - dev_err(&pdev->dev, "failed to reserve memory region\n"); - ret = -ENOENT; - goto exit_err; - } - - s3c2410_rtc_base = ioremap(res->start, res->end - res->start + 1); - if (s3c2410_rtc_base == NULL) { - dev_err(&pdev->dev, "failed ioremap()\n"); - ret = -EINVAL; - goto exit_err; - } - - s3c2410_rtc_mem = res; - pr_debug("s3c2410_rtc_base=%p\n", s3c2410_rtc_base); - - pr_debug("s3c2410_rtc: RTCCON=%02x\n", readb(S3C2410_RTCCON)); - - /* check to see if everything is setup correctly */ - - s3c2410_rtc_enable(pdev, 1); - - pr_debug("s3c2410_rtc: RTCCON=%02x\n", readb(S3C2410_RTCCON)); - - s3c2410_rtc_setfreq(s3c2410_rtc_freq); - - /* register RTC and exit */ - - register_rtc(&s3c2410_rtcops); - return 0; - - exit_err: - dev_err(&pdev->dev, "error %d during initialisation\n", ret); - - return ret; -} - -#ifdef CONFIG_PM - -/* S3C2410 RTC Power management control */ - -static struct timespec s3c2410_rtc_delta; - -static int ticnt_save; - -static int s3c2410_rtc_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct rtc_time tm; - struct timespec time; - - time.tv_nsec = 0; - - /* save TICNT for anyone using periodic interrupts */ - - ticnt_save = readb(S3C2410_TICNT); - - /* calculate time delta for suspend */ - - s3c2410_rtc_gettime(&tm); - rtc_tm_to_time(&tm, &time.tv_sec); - save_time_delta(&s3c2410_rtc_delta, &time); - s3c2410_rtc_enable(pdev, 0); - - return 0; -} - -static int s3c2410_rtc_resume(struct platform_device *pdev) -{ - struct rtc_time tm; - struct timespec time; - - time.tv_nsec = 0; - - s3c2410_rtc_enable(pdev, 1); - s3c2410_rtc_gettime(&tm); - rtc_tm_to_time(&tm, &time.tv_sec); - restore_time_delta(&s3c2410_rtc_delta, &time); - - writeb(ticnt_save, S3C2410_TICNT); - return 0; -} -#else -#define s3c2410_rtc_suspend NULL -#define s3c2410_rtc_resume NULL -#endif - -static struct platform_driver s3c2410_rtcdrv = { - .probe = s3c2410_rtc_probe, - .remove = s3c2410_rtc_remove, - .suspend = s3c2410_rtc_suspend, - .resume = s3c2410_rtc_resume, - .driver = { - .name = "s3c2410-rtc", - .owner = THIS_MODULE, - }, -}; - -static char __initdata banner[] = "S3C2410 RTC, (c) 2004 Simtec Electronics\n"; - -static int __init s3c2410_rtc_init(void) -{ - printk(banner); - return platform_driver_register(&s3c2410_rtcdrv); -} - -static void __exit s3c2410_rtc_exit(void) -{ - platform_driver_unregister(&s3c2410_rtcdrv); -} - -module_init(s3c2410_rtc_init); -module_exit(s3c2410_rtc_exit); - -MODULE_DESCRIPTION("S3C24XX RTC Driver"); -MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c index b956c7babd1..99e5272e3c5 100644 --- a/drivers/char/scx200_gpio.c +++ b/drivers/char/scx200_gpio.c @@ -44,7 +44,7 @@ struct nsc_gpio_ops scx200_gpio_ops = { .gpio_change = scx200_gpio_change, .gpio_current = scx200_gpio_current }; -EXPORT_SYMBOL(scx200_gpio_ops); +EXPORT_SYMBOL_GPL(scx200_gpio_ops); static int scx200_gpio_open(struct inode *inode, struct file *file) { @@ -69,7 +69,7 @@ static const struct file_operations scx200_gpio_fileops = { .release = scx200_gpio_release, }; -struct cdev scx200_gpio_cdev; /* use 1 cdev for all pins */ +static struct cdev scx200_gpio_cdev; /* use 1 cdev for all pins */ static int __init scx200_gpio_init(void) { diff --git a/drivers/char/selection.c b/drivers/char/selection.c index 71093a9fc46..74cff839c85 100644 --- a/drivers/char/selection.c +++ b/drivers/char/selection.c @@ -33,7 +33,7 @@ extern void poke_blanked_console(void); /* Variables for selection control. */ /* Use a dynamic buffer, instead of static (Dec 1994) */ -struct vc_data *sel_cons; /* must not be disallocated */ +struct vc_data *sel_cons; /* must not be deallocated */ static volatile int sel_start = -1; /* cleared by clear_selection */ static int sel_end; static int sel_buffer_lth; diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c index a1d303f9a33..c0ef0f0e580 100644 --- a/drivers/char/specialix.c +++ b/drivers/char/specialix.c @@ -1087,24 +1087,16 @@ static void sx_change_speed(struct specialix_board *bp, struct specialix_port *p port->MSVR = (sx_in(bp, CD186x_MSVR) & MSVR_RTS); spin_unlock_irqrestore(&bp->lock, flags); dprintk (SX_DEBUG_TERMIOS, "sx: got MSVR=%02x.\n", port->MSVR); - baud = C_BAUD(tty); + baud = tty_get_baud_rate(tty); - if (baud & CBAUDEX) { - baud &= ~CBAUDEX; - if (baud < 1 || baud > 2) - port->tty->termios->c_cflag &= ~CBAUDEX; - else - baud += 15; - } - if (baud == 15) { + if (baud == 38400) { if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) baud ++; if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) baud += 2; } - - if (!baud_table[baud]) { + if (!baud) { /* Drop DTR & exit */ dprintk (SX_DEBUG_TERMIOS, "Dropping DTR... Hmm....\n"); if (!SX_CRTSCTS (tty)) { @@ -1134,7 +1126,7 @@ static void sx_change_speed(struct specialix_board *bp, struct specialix_port *p "This is an untested option, please be carefull.\n", port_No (port), tmp); else - tmp = (((SX_OSCFREQ + baud_table[baud]/2) / baud_table[baud] + + tmp = (((SX_OSCFREQ + baud/2) / baud + CD186x_TPC/2) / CD186x_TPC); if ((tmp < 0x10) && time_before(again, jiffies)) { diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index ee3ca8f1768..0ad6cb081db 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -208,7 +208,7 @@ static void send_sig_all(int sig) struct task_struct *p; for_each_process(p) { - if (p->mm && p->pid != 1) + if (p->mm && !is_init(p)) /* Not swapper, init nor kernel thread */ force_sig(sig, p); } diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h index 2e68eeb8a2c..aefd683c60b 100644 --- a/drivers/char/tpm/tpm_atmel.h +++ b/drivers/char/tpm/tpm_atmel.h @@ -37,7 +37,7 @@ static void __iomem * atmel_get_base_addr(unsigned long *base, int *region_size) { struct device_node *dn; unsigned long address, size; - unsigned int *reg; + const unsigned int *reg; int reglen; int naddrc; int nsizec; @@ -52,7 +52,7 @@ static void __iomem * atmel_get_base_addr(unsigned long *base, int *region_size) return NULL; } - reg = (unsigned int *) get_property(dn, "reg", ®len); + reg = get_property(dn, "reg", ®len); naddrc = prom_n_addr_cells(dn); nsizec = prom_n_size_cells(dn); diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index bb0d9199e99..333741770f1 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -129,6 +129,7 @@ LIST_HEAD(tty_drivers); /* linked list of tty drivers */ /* Semaphore to protect creating and releasing a tty. This is shared with vt.c for deeply disgusting hack reasons */ DEFINE_MUTEX(tty_mutex); +EXPORT_SYMBOL(tty_mutex); #ifdef CONFIG_UNIX98_PTYS extern struct tty_driver *ptm_driver; /* Unix98 pty masters; for /dev/ptmx */ @@ -160,17 +161,11 @@ static void release_mem(struct tty_struct *tty, int idx); * been initialized in any way but has been zeroed * * Locking: none - * FIXME: use kzalloc */ static struct tty_struct *alloc_tty_struct(void) { - struct tty_struct *tty; - - tty = kmalloc(sizeof(struct tty_struct), GFP_KERNEL); - if (tty) - memset(tty, 0, sizeof(struct tty_struct)); - return tty; + return kzalloc(sizeof(struct tty_struct), GFP_KERNEL); } static void tty_buffer_free_all(struct tty_struct *); @@ -483,10 +478,9 @@ int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, tb->used += space; copied += space; chars += space; - } - /* There is a small chance that we need to split the data over - several buffers. If this is the case we must loop */ - while (unlikely(size > copied)); + /* There is a small chance that we need to split the data over + several buffers. If this is the case we must loop */ + } while (unlikely(size > copied)); return copied; } EXPORT_SYMBOL(tty_insert_flip_string); @@ -521,10 +515,9 @@ int tty_insert_flip_string_flags(struct tty_struct *tty, copied += space; chars += space; flags += space; - } - /* There is a small chance that we need to split the data over - several buffers. If this is the case we must loop */ - while (unlikely(size > copied)); + /* There is a small chance that we need to split the data over + several buffers. If this is the case we must loop */ + } while (unlikely(size > copied)); return copied; } EXPORT_SYMBOL(tty_insert_flip_string_flags); @@ -626,9 +619,9 @@ EXPORT_SYMBOL_GPL(tty_prepare_flip_string_flags); static void tty_set_termios_ldisc(struct tty_struct *tty, int num) { - down(&tty->termios_sem); + mutex_lock(&tty->termios_mutex); tty->termios->c_line = num; - up(&tty->termios_sem); + mutex_unlock(&tty->termios_mutex); } /* @@ -1346,9 +1339,9 @@ static void do_tty_hangup(void *data) */ if (tty->driver->flags & TTY_DRIVER_RESET_TERMIOS) { - down(&tty->termios_sem); + mutex_lock(&tty->termios_mutex); *tty->termios = tty->driver->init_termios; - up(&tty->termios_sem); + mutex_unlock(&tty->termios_mutex); } /* Defer ldisc switch */ @@ -2072,8 +2065,9 @@ fail_no_mem: /* call the tty release_mem routine to clean out this slot */ release_mem_out: - printk(KERN_INFO "init_dev: ldisc open failed, " - "clearing slot %d\n", idx); + if (printk_ratelimit()) + printk(KERN_INFO "init_dev: ldisc open failed, " + "clearing slot %d\n", idx); release_mem(tty, idx); goto end_init; } @@ -2726,6 +2720,8 @@ static int tty_fasync(int fd, struct file * filp, int on) * Locking: * Called functions take tty_ldisc_lock * current->signal->tty check is safe without locks + * + * FIXME: may race normal receive processing */ static int tiocsti(struct tty_struct *tty, char __user *p) @@ -2748,18 +2744,21 @@ static int tiocsti(struct tty_struct *tty, char __user *p) * @tty; tty * @arg: user buffer for result * - * Copies the kernel idea of the window size into the user buffer. No - * locking is done. + * Copies the kernel idea of the window size into the user buffer. * - * FIXME: Returning random values racing a window size set is wrong - * should lock here against that + * Locking: tty->termios_sem is taken to ensure the winsize data + * is consistent. */ static int tiocgwinsz(struct tty_struct *tty, struct winsize __user * arg) { - if (copy_to_user(arg, &tty->winsize, sizeof(*arg))) - return -EFAULT; - return 0; + int err; + + mutex_lock(&tty->termios_mutex); + err = copy_to_user(arg, &tty->winsize, sizeof(*arg)); + mutex_unlock(&tty->termios_mutex); + + return err ? -EFAULT: 0; } /** @@ -2772,12 +2771,11 @@ static int tiocgwinsz(struct tty_struct *tty, struct winsize __user * arg) * actually has driver level meaning and triggers a VC resize. * * Locking: - * The console_sem is used to ensure we do not try and resize - * the console twice at once. - * FIXME: Two racing size sets may leave the console and kernel - * parameters disagreeing. Is this exploitable ? - * FIXME: Random values racing a window size get is wrong - * should lock here against that + * Called function use the console_sem is used to ensure we do + * not try and resize the console twice at once. + * The tty->termios_sem is used to ensure we don't double + * resize and get confused. Lock order - tty->termios.sem before + * console sem */ static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty, @@ -2787,17 +2785,18 @@ static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty, if (copy_from_user(&tmp_ws, arg, sizeof(*arg))) return -EFAULT; + + mutex_lock(&tty->termios_mutex); if (!memcmp(&tmp_ws, &tty->winsize, sizeof(*arg))) - return 0; + goto done; + #ifdef CONFIG_VT if (tty->driver->type == TTY_DRIVER_TYPE_CONSOLE) { - int rc; - - acquire_console_sem(); - rc = vc_resize(tty->driver_data, tmp_ws.ws_col, tmp_ws.ws_row); - release_console_sem(); - if (rc) - return -ENXIO; + if (vc_lock_resize(tty->driver_data, tmp_ws.ws_col, + tmp_ws.ws_row)) { + mutex_unlock(&tty->termios_mutex); + return -ENXIO; + } } #endif if (tty->pgrp > 0) @@ -2806,6 +2805,8 @@ static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty, kill_pg(real_tty->pgrp, SIGWINCH, 1); tty->winsize = tmp_ws; real_tty->winsize = tmp_ws; +done: + mutex_unlock(&tty->termios_mutex); return 0; } @@ -2880,9 +2881,7 @@ static int fionbio(struct file *file, int __user *p) * Locking: * Takes tasklist lock internally to walk sessions * Takes task_lock() when updating signal->tty - * - * FIXME: tty_mutex is needed to protect signal->tty references. - * FIXME: why task_lock on the signal->tty reference ?? + * Takes tty_mutex() to protect tty instance * */ @@ -2917,9 +2916,11 @@ static int tiocsctty(struct tty_struct *tty, int arg) } else return -EPERM; } + mutex_lock(&tty_mutex); task_lock(current); current->signal->tty = tty; task_unlock(current); + mutex_unlock(&tty_mutex); current->signal->tty_old_pgrp = 0; tty->session = current->signal->session; tty->pgrp = process_group(current); @@ -2959,8 +2960,6 @@ static int tiocgpgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t * permitted where the tty session is our session. * * Locking: None - * - * FIXME: current->signal->tty referencing is unsafe. */ static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p) @@ -3039,19 +3038,20 @@ static int tiocsetd(struct tty_struct *tty, int __user *p) * timed break functionality. * * Locking: - * None + * atomic_write_lock serializes * - * FIXME: - * What if two overlap */ static int send_break(struct tty_struct *tty, unsigned int duration) { + if (mutex_lock_interruptible(&tty->atomic_write_lock)) + return -EINTR; tty->driver->break_ctl(tty, -1); if (!signal_pending(current)) { msleep_interruptible(duration); } tty->driver->break_ctl(tty, 0); + mutex_unlock(&tty->atomic_write_lock); if (signal_pending(current)) return -EINTR; return 0; @@ -3144,6 +3144,8 @@ int tty_ioctl(struct inode * inode, struct file * file, if (tty_paranoia_check(tty, inode, "tty_ioctl")) return -EINVAL; + /* CHECKME: is this safe as one end closes ? */ + real_tty = tty; if (tty->driver->type == TTY_DRIVER_TYPE_PTY && tty->driver->subtype == PTY_TYPE_MASTER) @@ -3580,7 +3582,7 @@ static void initialize_tty_struct(struct tty_struct *tty) tty_buffer_init(tty); INIT_WORK(&tty->buf.work, flush_to_ldisc, tty); init_MUTEX(&tty->buf.pty_sem); - init_MUTEX(&tty->termios_sem); + mutex_init(&tty->termios_mutex); init_waitqueue_head(&tty->write_wait); init_waitqueue_head(&tty->read_wait); INIT_WORK(&tty->hangup_work, do_tty_hangup, tty); diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c index 4ad47d321bd..3b6fa7b0be8 100644 --- a/drivers/char/tty_ioctl.c +++ b/drivers/char/tty_ioctl.c @@ -20,6 +20,7 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/bitops.h> +#include <linux/mutex.h> #include <asm/io.h> #include <asm/uaccess.h> @@ -131,7 +132,7 @@ static void change_termios(struct tty_struct * tty, struct termios * new_termios /* FIXME: we need to decide on some locking/ordering semantics for the set_termios notification eventually */ - down(&tty->termios_sem); + mutex_lock(&tty->termios_mutex); *tty->termios = *new_termios; unset_locked_termios(tty->termios, &old_termios, tty->termios_locked); @@ -176,7 +177,7 @@ static void change_termios(struct tty_struct * tty, struct termios * new_termios (ld->set_termios)(tty, &old_termios); tty_ldisc_deref(ld); } - up(&tty->termios_sem); + mutex_unlock(&tty->termios_mutex); } /** @@ -284,13 +285,13 @@ static int get_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb) { struct sgttyb tmp; - down(&tty->termios_sem); + mutex_lock(&tty->termios_mutex); tmp.sg_ispeed = 0; tmp.sg_ospeed = 0; tmp.sg_erase = tty->termios->c_cc[VERASE]; tmp.sg_kill = tty->termios->c_cc[VKILL]; tmp.sg_flags = get_sgflags(tty); - up(&tty->termios_sem); + mutex_unlock(&tty->termios_mutex); return copy_to_user(sgttyb, &tmp, sizeof(tmp)) ? -EFAULT : 0; } @@ -345,12 +346,12 @@ static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb) if (copy_from_user(&tmp, sgttyb, sizeof(tmp))) return -EFAULT; - down(&tty->termios_sem); + mutex_lock(&tty->termios_mutex); termios = *tty->termios; termios.c_cc[VERASE] = tmp.sg_erase; termios.c_cc[VKILL] = tmp.sg_kill; set_sgflags(&termios, tmp.sg_flags); - up(&tty->termios_sem); + mutex_unlock(&tty->termios_mutex); change_termios(tty, &termios); return 0; } @@ -422,24 +423,28 @@ static int set_ltchars(struct tty_struct * tty, struct ltchars __user * ltchars) * * Send a high priority character to the tty even if stopped * - * Locking: none - * - * FIXME: overlapping calls with start/stop tty lose state of tty + * Locking: none for xchar method, write ordering for write method. */ -static void send_prio_char(struct tty_struct *tty, char ch) +static int send_prio_char(struct tty_struct *tty, char ch) { int was_stopped = tty->stopped; if (tty->driver->send_xchar) { tty->driver->send_xchar(tty, ch); - return; + return 0; } + + if (mutex_lock_interruptible(&tty->atomic_write_lock)) + return -ERESTARTSYS; + if (was_stopped) start_tty(tty); tty->driver->write(tty, &ch, 1); if (was_stopped) stop_tty(tty); + mutex_unlock(&tty->atomic_write_lock); + return 0; } int n_tty_ioctl(struct tty_struct * tty, struct file * file, @@ -513,11 +518,11 @@ int n_tty_ioctl(struct tty_struct * tty, struct file * file, break; case TCIOFF: if (STOP_CHAR(tty) != __DISABLED_CHAR) - send_prio_char(tty, STOP_CHAR(tty)); + return send_prio_char(tty, STOP_CHAR(tty)); break; case TCION: if (START_CHAR(tty) != __DISABLED_CHAR) - send_prio_char(tty, START_CHAR(tty)); + return send_prio_char(tty, START_CHAR(tty)); break; default: return -EINVAL; @@ -592,11 +597,11 @@ int n_tty_ioctl(struct tty_struct * tty, struct file * file, case TIOCSSOFTCAR: if (get_user(arg, (unsigned int __user *) arg)) return -EFAULT; - down(&tty->termios_sem); + mutex_lock(&tty->termios_mutex); tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); - up(&tty->termios_sem); + mutex_unlock(&tty->termios_mutex); return 0; default: return -ENOIOCTLCMD; diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c index a9247b5213d..bd7a98c6ea7 100644 --- a/drivers/char/vc_screen.c +++ b/drivers/char/vc_screen.c @@ -474,14 +474,15 @@ static const struct file_operations vcs_fops = { static struct class *vc_class; -void vcs_make_devfs(struct tty_struct *tty) +void vcs_make_sysfs(struct tty_struct *tty) { class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1), NULL, "vcs%u", tty->index + 1); class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129), NULL, "vcsa%u", tty->index + 1); } -void vcs_remove_devfs(struct tty_struct *tty) + +void vcs_remove_sysfs(struct tty_struct *tty) { class_device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 1)); class_device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 129)); diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c index 766f7864c6c..f3efeaf2826 100644 --- a/drivers/char/viocons.c +++ b/drivers/char/viocons.c @@ -43,7 +43,6 @@ #include <linux/sysrq.h> #include <asm/iseries/vio.h> - #include <asm/iseries/hv_lp_event.h> #include <asm/iseries/hv_call_event.h> #include <asm/iseries/hv_lp_config.h> @@ -67,35 +66,6 @@ static int vio_sysrq_pressed; extern int sysrq_enabled; #endif -/* - * The structure of the events that flow between us and OS/400. You can't - * mess with this unless the OS/400 side changes too - */ -struct viocharlpevent { - struct HvLpEvent event; - u32 reserved; - u16 version; - u16 subtype_result_code; - u8 virtual_device; - u8 len; - u8 data[VIOCHAR_MAX_DATA]; -}; - -#define VIOCHAR_WINDOW 10 -#define VIOCHAR_HIGHWATERMARK 3 - -enum viocharsubtype { - viocharopen = 0x0001, - viocharclose = 0x0002, - viochardata = 0x0003, - viocharack = 0x0004, - viocharconfig = 0x0005 -}; - -enum viochar_rc { - viochar_rc_ebusy = 1 -}; - #define VIOCHAR_NUM_BUF 16 /* @@ -1183,6 +1153,7 @@ static int __init viocons_init(void) port_info[i].magic = VIOTTY_MAGIC; } HvCall_setLogBufferFormatAndCodepage(HvCall_LogBuffer_ASCII, 437); + add_preferred_console("viocons", 0, NULL); register_console(&viocons_early); return 0; } diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c index b72b2049aaa..73c78bf75d7 100644 --- a/drivers/char/viotape.c +++ b/drivers/char/viotape.c @@ -940,7 +940,6 @@ static void vioHandleTapeEvent(struct HvLpEvent *event) static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id) { - char tapename[32]; int i = vdev->unit_address; int j; @@ -956,10 +955,9 @@ static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id) "iseries!vt%d", i); class_device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80), NULL, "iseries!nvt%d", i); - sprintf(tapename, "iseries/vt%d", i); - printk(VIOTAPE_KERN_INFO "tape %s is iSeries " + printk(VIOTAPE_KERN_INFO "tape iseries/vt%d is iSeries " "resource %10.10s type %4.4s, model %3.3s\n", - tapename, viotape_unitinfo[i].rsrcname, + i, viotape_unitinfo[i].rsrcname, viotape_unitinfo[i].type, viotape_unitinfo[i].model); return 0; } diff --git a/drivers/char/vt.c b/drivers/char/vt.c index da7e66a2a38..fb75da940b5 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -63,6 +63,13 @@ * * Removed console_lock, enabled interrupts across all console operations * 13 March 2001, Andrew Morton + * + * Fixed UTF-8 mode so alternate charset modes always work according + * to control sequences interpreted in do_con_trol function + * preserving backward VT100 semigraphics compatibility, + * malformed UTF sequences represented as sequences of replacement glyphs, + * original codes or '?' as a last resort if replacement glyph is undefined + * by Adam Tla/lka <atlka@pg.gda.pl>, Aug 2006 */ #include <linux/module.h> @@ -128,8 +135,8 @@ const struct consw *conswitchp; #define DEFAULT_BELL_PITCH 750 #define DEFAULT_BELL_DURATION (HZ/8) -extern void vcs_make_devfs(struct tty_struct *tty); -extern void vcs_remove_devfs(struct tty_struct *tty); +extern void vcs_make_sysfs(struct tty_struct *tty); +extern void vcs_remove_sysfs(struct tty_struct *tty); extern void console_map_init(void); #ifdef CONFIG_PROM_CONSOLE @@ -730,7 +737,8 @@ int vc_allocate(unsigned int currcons) /* return 0 on success */ visual_init(vc, currcons, 1); if (!*vc->vc_uni_pagedir_loc) con_set_default_unimap(vc); - vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL); + if (!vc->vc_kmalloced) + vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL); if (!vc->vc_screenbuf) { kfree(vc); vc_cons[currcons].d = NULL; @@ -878,8 +886,17 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines) return err; } +int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines) +{ + int rc; + + acquire_console_sem(); + rc = vc_resize(vc, cols, lines); + release_console_sem(); + return rc; +} -void vc_disallocate(unsigned int currcons) +void vc_deallocate(unsigned int currcons) { WARN_CONSOLE_UNLOCKED(); @@ -2005,17 +2022,23 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co /* Do no translation at all in control states */ if (vc->vc_state != ESnormal) { tc = c; - } else if (vc->vc_utf) { + } else if (vc->vc_utf && !vc->vc_disp_ctrl) { /* Combine UTF-8 into Unicode */ - /* Incomplete characters silently ignored */ + /* Malformed sequences as sequences of replacement glyphs */ +rescan_last_byte: if(c > 0x7f) { - if (vc->vc_utf_count > 0 && (c & 0xc0) == 0x80) { - vc->vc_utf_char = (vc->vc_utf_char << 6) | (c & 0x3f); - vc->vc_utf_count--; - if (vc->vc_utf_count == 0) - tc = c = vc->vc_utf_char; - else continue; + if (vc->vc_utf_count) { + if ((c & 0xc0) == 0x80) { + vc->vc_utf_char = (vc->vc_utf_char << 6) | (c & 0x3f); + if (--vc->vc_utf_count) { + vc->vc_npar++; + continue; + } + tc = c = vc->vc_utf_char; + } else + goto replacement_glyph; } else { + vc->vc_npar = 0; if ((c & 0xe0) == 0xc0) { vc->vc_utf_count = 1; vc->vc_utf_char = (c & 0x1f); @@ -2032,14 +2055,15 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co vc->vc_utf_count = 5; vc->vc_utf_char = (c & 0x01); } else - vc->vc_utf_count = 0; + goto replacement_glyph; continue; } } else { + if (vc->vc_utf_count) + goto replacement_glyph; tc = c; - vc->vc_utf_count = 0; } - } else { /* no utf */ + } else { /* no utf or alternate charset mode */ tc = vc->vc_translate[vc->vc_toggle_meta ? (c | 0x80) : c]; } @@ -2054,31 +2078,33 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co * direct-to-font zone in UTF-8 mode. */ ok = tc && (c >= 32 || - (!vc->vc_utf && !(((vc->vc_disp_ctrl ? CTRL_ALWAYS - : CTRL_ACTION) >> c) & 1))) + !(vc->vc_disp_ctrl ? (CTRL_ALWAYS >> c) & 1 : + vc->vc_utf || ((CTRL_ACTION >> c) & 1))) && (c != 127 || vc->vc_disp_ctrl) && (c != 128+27); if (vc->vc_state == ESnormal && ok) { /* Now try to find out how to display it */ tc = conv_uni_to_pc(vc, tc); - if ( tc == -4 ) { + if (tc & ~charmask) { + if ( tc == -4 ) { /* If we got -4 (not found) then see if we have defined a replacement character (U+FFFD) */ - tc = conv_uni_to_pc(vc, 0xfffd); - - /* One reason for the -4 can be that we just - did a clear_unimap(); - try at least to show something. */ - if (tc == -4) - tc = c; - } else if ( tc == -3 ) { - /* Bad hash table -- hope for the best */ - tc = c; - } - if (tc & ~charmask) - continue; /* Conversion failed */ +replacement_glyph: + tc = conv_uni_to_pc(vc, 0xfffd); + if (!(tc & ~charmask)) + goto display_glyph; + } else if ( tc != -3 ) + continue; /* nothing to display */ + /* no hash table or no replacement -- + * hope for the best */ + if ( c & ~charmask ) + tc = '?'; + else + tc = c; + } +display_glyph: if (vc->vc_need_wrap || vc->vc_decim) FLUSH if (vc->vc_need_wrap) { @@ -2102,6 +2128,15 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co vc->vc_x++; draw_to = (vc->vc_pos += 2); } + if (vc->vc_utf_count) { + if (vc->vc_npar) { + vc->vc_npar--; + goto display_glyph; + } + vc->vc_utf_count = 0; + c = orig; + goto rescan_last_byte; + } continue; } FLUSH @@ -2498,7 +2533,7 @@ static int con_open(struct tty_struct *tty, struct file *filp) tty->winsize.ws_col = vc_cons[currcons].d->vc_cols; } release_console_sem(); - vcs_make_devfs(tty); + vcs_make_sysfs(tty); return ret; } } @@ -2511,7 +2546,7 @@ static int con_open(struct tty_struct *tty, struct file *filp) * and taking a ref against the tty while we're in the process of forgetting * about it and cleaning things up. * - * This is because vcs_remove_devfs() can sleep and will drop the BKL. + * This is because vcs_remove_sysfs() can sleep and will drop the BKL. */ static void con_close(struct tty_struct *tty, struct file *filp) { @@ -2524,7 +2559,7 @@ static void con_close(struct tty_struct *tty, struct file *filp) vc->vc_tty = NULL; tty->driver_data = NULL; release_console_sem(); - vcs_remove_devfs(tty); + vcs_remove_sysfs(tty); mutex_unlock(&tty_mutex); /* * tty_mutex is released, but we still hold BKL, so there is @@ -3765,6 +3800,7 @@ EXPORT_SYMBOL(default_blu); EXPORT_SYMBOL(update_region); EXPORT_SYMBOL(redraw_screen); EXPORT_SYMBOL(vc_resize); +EXPORT_SYMBOL(vc_lock_resize); EXPORT_SYMBOL(fg_console); EXPORT_SYMBOL(console_blank_hook); EXPORT_SYMBOL(console_blanked); diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c index a5628a8b662..a53e382cc10 100644 --- a/drivers/char/vt_ioctl.c +++ b/drivers/char/vt_ioctl.c @@ -96,7 +96,7 @@ do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, struct kbd_str if (!perm) return -EPERM; if (!i && v == K_NOSUCHMAP) { - /* disallocate map */ + /* deallocate map */ key_map = key_maps[s]; if (s && key_map) { key_maps[s] = NULL; @@ -819,20 +819,20 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, if (arg > MAX_NR_CONSOLES) return -ENXIO; if (arg == 0) { - /* disallocate all unused consoles, but leave 0 */ + /* deallocate all unused consoles, but leave 0 */ acquire_console_sem(); for (i=1; i<MAX_NR_CONSOLES; i++) if (! VT_BUSY(i)) - vc_disallocate(i); + vc_deallocate(i); release_console_sem(); } else { - /* disallocate a single console, if possible */ + /* deallocate a single console, if possible */ arg--; if (VT_BUSY(arg)) return -EBUSY; if (arg) { /* leave 0 */ acquire_console_sem(); - vc_disallocate(arg); + vc_deallocate(arg); release_console_sem(); } } @@ -847,11 +847,8 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, if (get_user(ll, &vtsizes->v_rows) || get_user(cc, &vtsizes->v_cols)) return -EFAULT; - for (i = 0; i < MAX_NR_CONSOLES; i++) { - acquire_console_sem(); - vc_resize(vc_cons[i].d, cc, ll); - release_console_sem(); - } + for (i = 0; i < MAX_NR_CONSOLES; i++) + vc_lock_resize(vc_cons[i].d, cc, ll); return 0; } diff --git a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig index fff89c2d88f..77ab7e020da 100644 --- a/drivers/char/watchdog/Kconfig +++ b/drivers/char/watchdog/Kconfig @@ -165,6 +165,13 @@ config EP93XX_WATCHDOG To compile this driver as a module, choose M here: the module will be called ep93xx_wdt. +config OMAP_WATCHDOG + tristate "OMAP Watchdog" + depends on WATCHDOG && (ARCH_OMAP16XX || ARCH_OMAP24XX) + help + Support for TI OMAP1610/OMAP1710/OMAP2420 watchdog. Say 'Y' here to + enable the OMAP1610/OMAP1710 watchdog timer. + # X86 (i386 + ia64 + x86_64) Architecture config ACQUIRE_WDT @@ -510,6 +517,14 @@ config SH_WDT To compile this driver as a module, choose M here: the module will be called shwdt. +config SH_WDT_MMAP + bool "Allow mmap of SH WDT" + default n + depends on SH_WDT + help + If you say Y here, user applications will be able to mmap the + WDT/CPG registers. +# # SPARC64 Architecture config WATCHDOG_CP1XXX diff --git a/drivers/char/watchdog/Makefile b/drivers/char/watchdog/Makefile index 6ab77b61a64..5099f8be8cc 100644 --- a/drivers/char/watchdog/Makefile +++ b/drivers/char/watchdog/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_USBPCWATCHDOG) += pcwd_usb.o # ARM Architecture obj-$(CONFIG_AT91_WATCHDOG) += at91_wdt.o +obj-$(CONFIG_OMAP_WATCHDOG) += omap_wdt.o obj-$(CONFIG_21285_WATCHDOG) += wdt285.o obj-$(CONFIG_977_WATCHDOG) += wdt977.o obj-$(CONFIG_IXP2000_WATCHDOG) += ixp2000_wdt.o diff --git a/drivers/char/watchdog/omap_wdt.c b/drivers/char/watchdog/omap_wdt.c new file mode 100644 index 00000000000..8f90b90a502 --- /dev/null +++ b/drivers/char/watchdog/omap_wdt.c @@ -0,0 +1,391 @@ +/* + * linux/drivers/char/watchdog/omap_wdt.c + * + * Watchdog driver for the TI OMAP 16xx & 24xx 32KHz (non-secure) watchdog + * + * Author: MontaVista Software, Inc. + * <gdavis@mvista.com> or <source@mvista.com> + * + * 2003 (c) MontaVista Software, Inc. This file is licensed under the + * terms of the GNU General Public License version 2. This program is + * licensed "as is" without any warranty of any kind, whether express + * or implied. + * + * History: + * + * 20030527: George G. Davis <gdavis@mvista.com> + * Initially based on linux-2.4.19-rmk7-pxa1/drivers/char/sa1100_wdt.c + * (c) Copyright 2000 Oleg Drokin <green@crimea.edu> + * Based on SoftDog driver by Alan Cox <alan@redhat.com> + * + * Copyright (c) 2004 Texas Instruments. + * 1. Modified to support OMAP1610 32-KHz watchdog timer + * 2. Ported to 2.6 kernel + * + * Copyright (c) 2005 David Brownell + * Use the driver model and standard identifiers; handle bigger timeouts. + */ + +#include <linux/module.h> +#include <linux/config.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/miscdevice.h> +#include <linux/watchdog.h> +#include <linux/reboot.h> +#include <linux/smp_lock.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/moduleparam.h> +#include <linux/clk.h> + +#include <asm/io.h> +#include <asm/uaccess.h> +#include <asm/hardware.h> +#include <asm/bitops.h> + +#include <asm/arch/prcm.h> + +#include "omap_wdt.h" + +static unsigned timer_margin; +module_param(timer_margin, uint, 0); +MODULE_PARM_DESC(timer_margin, "initial watchdog timeout (in seconds)"); + +static int omap_wdt_users; +static struct clk *armwdt_ck = NULL; +static struct clk *mpu_wdt_ick = NULL; +static struct clk *mpu_wdt_fck = NULL; + +static unsigned int wdt_trgr_pattern = 0x1234; + +static void omap_wdt_ping(void) +{ + /* wait for posted write to complete */ + while ((omap_readl(OMAP_WATCHDOG_WPS)) & 0x08) + cpu_relax(); + wdt_trgr_pattern = ~wdt_trgr_pattern; + omap_writel(wdt_trgr_pattern, (OMAP_WATCHDOG_TGR)); + /* wait for posted write to complete */ + while ((omap_readl(OMAP_WATCHDOG_WPS)) & 0x08) + cpu_relax(); + /* reloaded WCRR from WLDR */ +} + +static void omap_wdt_enable(void) +{ + /* Sequence to enable the watchdog */ + omap_writel(0xBBBB, OMAP_WATCHDOG_SPR); + while ((omap_readl(OMAP_WATCHDOG_WPS)) & 0x10) + cpu_relax(); + omap_writel(0x4444, OMAP_WATCHDOG_SPR); + while ((omap_readl(OMAP_WATCHDOG_WPS)) & 0x10) + cpu_relax(); +} + +static void omap_wdt_disable(void) +{ + /* sequence required to disable watchdog */ + omap_writel(0xAAAA, OMAP_WATCHDOG_SPR); /* TIMER_MODE */ + while (omap_readl(OMAP_WATCHDOG_WPS) & 0x10) + cpu_relax(); + omap_writel(0x5555, OMAP_WATCHDOG_SPR); /* TIMER_MODE */ + while (omap_readl(OMAP_WATCHDOG_WPS) & 0x10) + cpu_relax(); +} + +static void omap_wdt_adjust_timeout(unsigned new_timeout) +{ + if (new_timeout < TIMER_MARGIN_MIN) + new_timeout = TIMER_MARGIN_DEFAULT; + if (new_timeout > TIMER_MARGIN_MAX) + new_timeout = TIMER_MARGIN_MAX; + timer_margin = new_timeout; +} + +static void omap_wdt_set_timeout(void) +{ + u32 pre_margin = GET_WLDR_VAL(timer_margin); + + /* just count up at 32 KHz */ + while (omap_readl(OMAP_WATCHDOG_WPS) & 0x04) + cpu_relax(); + omap_writel(pre_margin, OMAP_WATCHDOG_LDR); + while (omap_readl(OMAP_WATCHDOG_WPS) & 0x04) + cpu_relax(); +} + +/* + * Allow only one task to hold it open + */ + +static int omap_wdt_open(struct inode *inode, struct file *file) +{ + if (test_and_set_bit(1, (unsigned long *)&omap_wdt_users)) + return -EBUSY; + + if (cpu_is_omap16xx()) + clk_enable(armwdt_ck); /* Enable the clock */ + + if (cpu_is_omap24xx()) { + clk_enable(mpu_wdt_ick); /* Enable the interface clock */ + clk_enable(mpu_wdt_fck); /* Enable the functional clock */ + } + + /* initialize prescaler */ + while (omap_readl(OMAP_WATCHDOG_WPS) & 0x01) + cpu_relax(); + omap_writel((1 << 5) | (PTV << 2), OMAP_WATCHDOG_CNTRL); + while (omap_readl(OMAP_WATCHDOG_WPS) & 0x01) + cpu_relax(); + + omap_wdt_set_timeout(); + omap_wdt_enable(); + return 0; +} + +static int omap_wdt_release(struct inode *inode, struct file *file) +{ + /* + * Shut off the timer unless NOWAYOUT is defined. + */ +#ifndef CONFIG_WATCHDOG_NOWAYOUT + omap_wdt_disable(); + + if (cpu_is_omap16xx()) { + clk_disable(armwdt_ck); /* Disable the clock */ + clk_put(armwdt_ck); + armwdt_ck = NULL; + } + + if (cpu_is_omap24xx()) { + clk_disable(mpu_wdt_ick); /* Disable the clock */ + clk_disable(mpu_wdt_fck); /* Disable the clock */ + clk_put(mpu_wdt_ick); + clk_put(mpu_wdt_fck); + mpu_wdt_ick = NULL; + mpu_wdt_fck = NULL; + } +#else + printk(KERN_CRIT "omap_wdt: Unexpected close, not stopping!\n"); +#endif + omap_wdt_users = 0; + return 0; +} + +static ssize_t +omap_wdt_write(struct file *file, const char __user *data, + size_t len, loff_t *ppos) +{ + /* Refresh LOAD_TIME. */ + if (len) + omap_wdt_ping(); + return len; +} + +static int +omap_wdt_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + int new_margin; + static struct watchdog_info ident = { + .identity = "OMAP Watchdog", + .options = WDIOF_SETTIMEOUT, + .firmware_version = 0, + }; + + switch (cmd) { + default: + return -ENOIOCTLCMD; + case WDIOC_GETSUPPORT: + return copy_to_user((struct watchdog_info __user *)arg, &ident, + sizeof(ident)); + case WDIOC_GETSTATUS: + return put_user(0, (int __user *)arg); + case WDIOC_GETBOOTSTATUS: + if (cpu_is_omap16xx()) + return put_user(omap_readw(ARM_SYSST), + (int __user *)arg); + if (cpu_is_omap24xx()) + return put_user(omap_prcm_get_reset_sources(), + (int __user *)arg); + case WDIOC_KEEPALIVE: + omap_wdt_ping(); + return 0; + case WDIOC_SETTIMEOUT: + if (get_user(new_margin, (int __user *)arg)) + return -EFAULT; + omap_wdt_adjust_timeout(new_margin); + + omap_wdt_disable(); + omap_wdt_set_timeout(); + omap_wdt_enable(); + + omap_wdt_ping(); + /* Fall */ + case WDIOC_GETTIMEOUT: + return put_user(timer_margin, (int __user *)arg); + } +} + +static struct file_operations omap_wdt_fops = { + .owner = THIS_MODULE, + .write = omap_wdt_write, + .ioctl = omap_wdt_ioctl, + .open = omap_wdt_open, + .release = omap_wdt_release, +}; + +static struct miscdevice omap_wdt_miscdev = { + .minor = WATCHDOG_MINOR, + .name = "watchdog", + .fops = &omap_wdt_fops +}; + +static int __init omap_wdt_probe(struct platform_device *pdev) +{ + struct resource *res, *mem; + int ret; + + /* reserve static register mappings */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENOENT; + + mem = request_mem_region(res->start, res->end - res->start + 1, + pdev->name); + if (mem == NULL) + return -EBUSY; + + platform_set_drvdata(pdev, mem); + + omap_wdt_users = 0; + + if (cpu_is_omap16xx()) { + armwdt_ck = clk_get(&pdev->dev, "armwdt_ck"); + if (IS_ERR(armwdt_ck)) { + ret = PTR_ERR(armwdt_ck); + armwdt_ck = NULL; + goto fail; + } + } + + if (cpu_is_omap24xx()) { + mpu_wdt_ick = clk_get(&pdev->dev, "mpu_wdt_ick"); + if (IS_ERR(mpu_wdt_ick)) { + ret = PTR_ERR(mpu_wdt_ick); + mpu_wdt_ick = NULL; + goto fail; + } + mpu_wdt_fck = clk_get(&pdev->dev, "mpu_wdt_fck"); + if (IS_ERR(mpu_wdt_fck)) { + ret = PTR_ERR(mpu_wdt_fck); + mpu_wdt_fck = NULL; + goto fail; + } + } + + omap_wdt_disable(); + omap_wdt_adjust_timeout(timer_margin); + + omap_wdt_miscdev.dev = &pdev->dev; + ret = misc_register(&omap_wdt_miscdev); + if (ret) + goto fail; + + pr_info("OMAP Watchdog Timer: initial timeout %d sec\n", timer_margin); + + /* autogate OCP interface clock */ + omap_writel(0x01, OMAP_WATCHDOG_SYS_CONFIG); + return 0; + +fail: + if (armwdt_ck) + clk_put(armwdt_ck); + if (mpu_wdt_ick) + clk_put(mpu_wdt_ick); + if (mpu_wdt_fck) + clk_put(mpu_wdt_fck); + release_resource(mem); + return ret; +} + +static void omap_wdt_shutdown(struct platform_device *pdev) +{ + omap_wdt_disable(); +} + +static int omap_wdt_remove(struct platform_device *pdev) +{ + struct resource *mem = platform_get_drvdata(pdev); + misc_deregister(&omap_wdt_miscdev); + release_resource(mem); + if (armwdt_ck) + clk_put(armwdt_ck); + if (mpu_wdt_ick) + clk_put(mpu_wdt_ick); + if (mpu_wdt_fck) + clk_put(mpu_wdt_fck); + return 0; +} + +#ifdef CONFIG_PM + +/* REVISIT ... not clear this is the best way to handle system suspend; and + * it's very inappropriate for selective device suspend (e.g. suspending this + * through sysfs rather than by stopping the watchdog daemon). Also, this + * may not play well enough with NOWAYOUT... + */ + +static int omap_wdt_suspend(struct platform_device *pdev, pm_message_t state) +{ + if (omap_wdt_users) + omap_wdt_disable(); + return 0; +} + +static int omap_wdt_resume(struct platform_device *pdev) +{ + if (omap_wdt_users) { + omap_wdt_enable(); + omap_wdt_ping(); + } + return 0; +} + +#else +#define omap_wdt_suspend NULL +#define omap_wdt_resume NULL +#endif + +static struct platform_driver omap_wdt_driver = { + .probe = omap_wdt_probe, + .remove = omap_wdt_remove, + .shutdown = omap_wdt_shutdown, + .suspend = omap_wdt_suspend, + .resume = omap_wdt_resume, + .driver = { + .owner = THIS_MODULE, + .name = "omap_wdt", + }, +}; + +static int __init omap_wdt_init(void) +{ + return platform_driver_register(&omap_wdt_driver); +} + +static void __exit omap_wdt_exit(void) +{ + platform_driver_unregister(&omap_wdt_driver); +} + +module_init(omap_wdt_init); +module_exit(omap_wdt_exit); + +MODULE_AUTHOR("George G. Davis"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); diff --git a/drivers/char/watchdog/omap_wdt.h b/drivers/char/watchdog/omap_wdt.h new file mode 100644 index 00000000000..52a532a5114 --- /dev/null +++ b/drivers/char/watchdog/omap_wdt.h @@ -0,0 +1,64 @@ +/* + * linux/drivers/char/watchdog/omap_wdt.h + * + * BRIEF MODULE DESCRIPTION + * OMAP Watchdog timer register definitions + * + * Copyright (C) 2004 Texas Instruments. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _OMAP_WATCHDOG_H +#define _OMAP_WATCHDOG_H + +#define OMAP1610_WATCHDOG_BASE 0xfffeb000 +#define OMAP2420_WATCHDOG_BASE 0x48022000 /*WDT Timer 2 */ + +#ifdef CONFIG_ARCH_OMAP24XX +#define OMAP_WATCHDOG_BASE OMAP2420_WATCHDOG_BASE +#else +#define OMAP_WATCHDOG_BASE OMAP1610_WATCHDOG_BASE +#define RM_RSTST_WKUP 0 +#endif + +#define OMAP_WATCHDOG_REV (OMAP_WATCHDOG_BASE + 0x00) +#define OMAP_WATCHDOG_SYS_CONFIG (OMAP_WATCHDOG_BASE + 0x10) +#define OMAP_WATCHDOG_STATUS (OMAP_WATCHDOG_BASE + 0x14) +#define OMAP_WATCHDOG_CNTRL (OMAP_WATCHDOG_BASE + 0x24) +#define OMAP_WATCHDOG_CRR (OMAP_WATCHDOG_BASE + 0x28) +#define OMAP_WATCHDOG_LDR (OMAP_WATCHDOG_BASE + 0x2c) +#define OMAP_WATCHDOG_TGR (OMAP_WATCHDOG_BASE + 0x30) +#define OMAP_WATCHDOG_WPS (OMAP_WATCHDOG_BASE + 0x34) +#define OMAP_WATCHDOG_SPR (OMAP_WATCHDOG_BASE + 0x48) + +/* Using the prescaler, the OMAP watchdog could go for many + * months before firing. These limits work without scaling, + * with the 60 second default assumed by most tools and docs. + */ +#define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */ +#define TIMER_MARGIN_DEFAULT 60 /* 60 secs */ +#define TIMER_MARGIN_MIN 1 + +#define PTV 0 /* prescale */ +#define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1) + +#endif /* _OMAP_WATCHDOG_H */ diff --git a/drivers/char/watchdog/shwdt.c b/drivers/char/watchdog/shwdt.c index 1355038f104..e5b8c64f1d6 100644 --- a/drivers/char/watchdog/shwdt.c +++ b/drivers/char/watchdog/shwdt.c @@ -27,7 +27,7 @@ #include <linux/notifier.h> #include <linux/ioport.h> #include <linux/fs.h> - +#include <linux/mm.h> #include <asm/io.h> #include <asm/uaccess.h> #include <asm/watchdog.h> @@ -125,7 +125,6 @@ static void sh_wdt_start(void) /** * sh_wdt_stop - Stop the Watchdog - * * Stops the watchdog. */ static void sh_wdt_stop(void) @@ -141,22 +140,20 @@ static void sh_wdt_stop(void) /** * sh_wdt_keepalive - Keep the Userspace Watchdog Alive - * * The Userspace watchdog got a KeepAlive: schedule the next heartbeat. */ -static void sh_wdt_keepalive(void) +static inline void sh_wdt_keepalive(void) { next_heartbeat = jiffies + (heartbeat * HZ); } /** * sh_wdt_set_heartbeat - Set the Userspace Watchdog heartbeat - * * Set the Userspace Watchdog heartbeat */ static int sh_wdt_set_heartbeat(int t) { - if ((t < 1) || (t > 3600)) /* arbitrary upper limit */ + if (unlikely((t < 1) || (t > 3600))) /* arbitrary upper limit */ return -EINVAL; heartbeat = t; @@ -165,7 +162,6 @@ static int sh_wdt_set_heartbeat(int t) /** * sh_wdt_ping - Ping the Watchdog - * * @data: Unused * * Clears overflow bit, resets timer counter. @@ -182,14 +178,13 @@ static void sh_wdt_ping(unsigned long data) sh_wdt_write_cnt(0); mod_timer(&timer, next_ping_period(clock_division_ratio)); - } else { - printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n"); - } + } else + printk(KERN_WARNING PFX "Heartbeat lost! Will not ping " + "the watchdog\n"); } /** * sh_wdt_open - Open the Device - * * @inode: inode of device * @file: file handle of device * @@ -209,7 +204,6 @@ static int sh_wdt_open(struct inode *inode, struct file *file) /** * sh_wdt_close - Close the Device - * * @inode: inode of device * @file: file handle of device * @@ -220,7 +214,8 @@ static int sh_wdt_close(struct inode *inode, struct file *file) if (shwdt_expect_close == 42) { sh_wdt_stop(); } else { - printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n"); + printk(KERN_CRIT PFX "Unexpected close, not " + "stopping watchdog!\n"); sh_wdt_keepalive(); } @@ -232,7 +227,6 @@ static int sh_wdt_close(struct inode *inode, struct file *file) /** * sh_wdt_write - Write to Device - * * @file: file handle of device * @buf: buffer to write * @count: length of buffer @@ -264,8 +258,56 @@ static ssize_t sh_wdt_write(struct file *file, const char *buf, } /** - * sh_wdt_ioctl - Query Device + * sh_wdt_mmap - map WDT/CPG registers into userspace + * @file: file structure for the device + * @vma: VMA to map the registers into + * + * A simple mmap() implementation for the corner cases where the counter + * needs to be mapped in userspace directly. Due to the relatively small + * size of the area, neighbouring registers not necessarily tied to the + * CPG will also be accessible through the register page, so this remains + * configurable for users that really know what they're doing. * + * Additionaly, the register page maps in the CPG register base relative + * to the nearest page-aligned boundary, which requires that userspace do + * the appropriate CPU subtype math for calculating the page offset for + * the counter value. + */ +static int sh_wdt_mmap(struct file *file, struct vm_area_struct *vma) +{ + int ret = -ENOSYS; + +#ifdef CONFIG_SH_WDT_MMAP + unsigned long addr; + + /* Only support the simple cases where we map in a register page. */ + if (((vma->vm_end - vma->vm_start) != PAGE_SIZE) || vma->vm_pgoff) + return -EINVAL; + + /* + * Pick WTCNT as the start, it's usually the first register after the + * FRQCR, and neither one are generally page-aligned out of the box. + */ + addr = WTCNT & ~(PAGE_SIZE - 1); + + vma->vm_flags |= VM_IO; + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + + if (io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, + PAGE_SIZE, vma->vm_page_prot)) { + printk(KERN_ERR PFX "%s: io_remap_pfn_range failed\n", + __FUNCTION__); + return -EAGAIN; + } + + ret = 0; +#endif + + return ret; +} + +/** + * sh_wdt_ioctl - Query Device * @inode: inode of device * @file: file handle of device * @cmd: watchdog command @@ -326,7 +368,6 @@ static int sh_wdt_ioctl(struct inode *inode, struct file *file, /** * sh_wdt_notify_sys - Notifier Handler - * * @this: notifier block * @code: notifier event * @unused: unused @@ -337,9 +378,8 @@ static int sh_wdt_ioctl(struct inode *inode, struct file *file, static int sh_wdt_notify_sys(struct notifier_block *this, unsigned long code, void *unused) { - if (code == SYS_DOWN || code == SYS_HALT) { + if (code == SYS_DOWN || code == SYS_HALT) sh_wdt_stop(); - } return NOTIFY_DONE; } @@ -351,10 +391,12 @@ static const struct file_operations sh_wdt_fops = { .ioctl = sh_wdt_ioctl, .open = sh_wdt_open, .release = sh_wdt_close, + .mmap = sh_wdt_mmap, }; static struct watchdog_info sh_wdt_info = { - .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE, + .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | + WDIOF_MAGICCLOSE, .firmware_version = 1, .identity = "SH WDT", }; @@ -371,7 +413,6 @@ static struct miscdevice sh_wdt_miscdev = { /** * sh_wdt_init - Initialize module - * * Registers the device and notifier handler. Actual device * initialization is handled by sh_wdt_open(). */ @@ -381,15 +422,15 @@ static int __init sh_wdt_init(void) if ((clock_division_ratio < 0x5) || (clock_division_ratio > 0x7)) { clock_division_ratio = WTCSR_CKS_4096; - printk(KERN_INFO PFX "clock_division_ratio value must be 0x5<=x<=0x7, using %d\n", - clock_division_ratio); + printk(KERN_INFO PFX "clock_division_ratio value must " + "be 0x5<=x<=0x7, using %d\n", clock_division_ratio); } - if (sh_wdt_set_heartbeat(heartbeat)) - { + rc = sh_wdt_set_heartbeat(heartbeat); + if (unlikely(rc)) { heartbeat = WATCHDOG_HEARTBEAT; - printk(KERN_INFO PFX "heartbeat value must be 1<=x<=3600, using %d\n", - heartbeat); + printk(KERN_INFO PFX "heartbeat value must " + "be 1<=x<=3600, using %d\n", heartbeat); } init_timer(&timer); @@ -397,15 +438,16 @@ static int __init sh_wdt_init(void) timer.data = 0; rc = register_reboot_notifier(&sh_wdt_notifier); - if (rc) { - printk(KERN_ERR PFX "Can't register reboot notifier (err=%d)\n", rc); + if (unlikely(rc)) { + printk(KERN_ERR PFX "Can't register reboot notifier (err=%d)\n", + rc); return rc; } rc = misc_register(&sh_wdt_miscdev); - if (rc) { - printk(KERN_ERR PFX "Can't register miscdev on minor=%d (err=%d)\n", - sh_wdt_miscdev.minor, rc); + if (unlikely(rc)) { + printk(KERN_ERR PFX "Can't register miscdev on " + "minor=%d (err=%d)\n", sh_wdt_miscdev.minor, rc); unregister_reboot_notifier(&sh_wdt_notifier); return rc; } @@ -418,7 +460,6 @@ static int __init sh_wdt_init(void) /** * sh_wdt_exit - Deinitialize module - * * Unregisters the device and notifier handler. Actual device * deinitialization is handled by sh_wdt_close(). */ @@ -434,14 +475,13 @@ MODULE_LICENSE("GPL"); MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); module_param(clock_division_ratio, int, 0); -MODULE_PARM_DESC(clock_division_ratio, "Clock division ratio. Valid ranges are from 0x5 (1.31ms) to 0x7 (5.25ms). Defaults to 0x7."); +MODULE_PARM_DESC(clock_division_ratio, "Clock division ratio. Valid ranges are from 0x5 (1.31ms) to 0x7 (5.25ms). (default=" __MODULE_STRING(clock_division_ratio) ")"); module_param(heartbeat, int, 0); MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (1<=heartbeat<=3600, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")"); module_param(nowayout, int, 0); -MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); +MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); module_init(sh_wdt_init); module_exit(sh_wdt_exit); - |