[PATCH] PA-RISC updates for 2.6.6

 - Split PA7300LC from PA7100LC (Matthew Wilcox)
 - Handle 32-bit firmware and 64-bit kernel at runtime (Ryan Bradetich)
 - Fix building in a separate tree (Matthew Wilcox)
 - Update defconfigs (Randolph Chung)
 - Make WCHAN work (Randolph Chung)
 - Initial support for SMP in 2.6 (Grant Grundler)
 - Use 8-byte PTEs on 32-bit kernels (James Bottomley)
 - Implement L2/L3 hybrid page tables for 64 bit kernels (James Bottomley)
 - Support 8TB of physical and virtual address space (James Bottomley)
 - Macro'ise the tlb miss handlers (James Bottomley)
 - Check the ptrace flags correctly in the syscall return path (Randolph Chung)
 - Eliminate many magic numbers (James Bottomley)
 - Work around linker bug in vmlinux.lds.S (James Bottomley)
 - Many cache flushing fixes (James Bottomley)
 - first baby step for PA8800 support (Grant Grundler)
 - Self-aligning spinlocks (Randolph Chung)

arch/parisc/Kconfig

@@ -51,25 +51,34 @@ choice
 config PA7000
 	bool "PA7000/PA7100"
 	---help---
-	  This is the processor type of your CPU. This information is used for
-	  optimizing purposes.  In order to compile a kernel that can run on
-	  all PA CPUs (albeit not optimally fast), you can specify "PA7000"
-	  here.
+	  This is the processor type of your CPU.  This information is
+	  used for optimizing purposes.  In order to compile a kernel
+	  that can run on all 32-bit PA CPUs (albeit not optimally fast),
+	  you can specify "PA7000" here.
 
 	  Specifying "PA8000" here will allow you to select a 64-bit kernel
 	  which is required on some machines.
 
 config PA7100LC
-	bool "PA7100LC/PA7300LC"
+	bool "PA7100LC"
 	help
-	  Select this option for a 7100LC or 7300LC processor, as used
-	  in the 712, 715/Mirage, A180, B132, C160L and some other machines.
+	  Select this option for the PCX-L processor, as used in the
+	  712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
+	  D200, D210, D300, D310 and E-class
 
 config PA7200
 	bool "PA7200"
 	help
-	  Select this option for the PCX-T' processor, as used in C110, D100
-	  and similar machines.
+	  Select this option for the PCX-T' processor, as used in the
+	  C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
+	  K100, K200, K210, K220, K400, K410 and K420
+
+config PA7300LC
+	bool "PA7300LC"
+	help
+	  Select this option for the PCX-L2 processor, as used in the
+	  744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
+	  D220, D230, D320 and D330.
 
 config PA8X00
 	bool "PA8000 and up"
@@ -81,14 +90,16 @@ endchoice
 # Define implied options from the CPU selection here
 
 config PA20
-	bool
+	def_bool y
 	depends on PA8X00
-	default y
 
 config PA11
-	bool
-	depends on PA7000 || PA7100LC || PA7200
-	default y
+	def_bool y
+	depends on PA7000 || PA7100LC || PA7200 || PA7300LC
+
+config PREFETCH
+	def_bool y
+	depends on PA8X00
 
 config PARISC64
 	bool "64-bit kernel"
@@ -106,18 +117,6 @@ config PARISC64
 config 64BIT
 	def_bool PARISC64
 
-config PDC_NARROW
-	bool "32-bit firmware"
-	depends on PARISC64
-	help
-	  This option will enable owners of C160, C180, C200, C240, C360, J280,
-	  J282, J2240 and some D/K/R class to run a 64bit kernel with their
-	  32bit PDC firmware.
-	
-	  Nobody should try this option unless they know what they are doing.
-	
-	  If unsure, say N.
-
 config SMP
 	bool "Symmetric multi-processing support"
 	---help---

arch/parisc/Makefile

@@ -16,7 +16,7 @@
 # Modified for PA-RISC Linux by Paul Lahaie, Alex deVries, 
 # Mike Shaver, Helge Deller and Martin K. Petersen
 #
-NM		= sh arch/parisc/nm
+NM		= sh $(srctree)/arch/parisc/nm
 ifdef CONFIG_PARISC64
 CROSS_COMPILE	:= hppa64-linux-
 UTS_MACHINE	:= parisc64
@@ -48,6 +48,7 @@ cflags-y	+= -ffunction-sections
 cflags-$(CONFIG_PA7100)		+= -march=1.1 -mschedule=7100
 cflags-$(CONFIG_PA7200)		+= -march=1.1 -mschedule=7200
 cflags-$(CONFIG_PA7100LC)	+= -march=1.1 -mschedule=7100LC
+cflags-$(CONFIG_PA7300LC)	+= -march=1.1 -mschedule=7300
 cflags-$(CONFIG_PA8X00)		+= -march=2.0 -mschedule=8000
 
 head-y			:= arch/parisc/kernel/head.o 

arch/parisc/configs/712_defconfig

@@ -141,6 +141,12 @@ CONFIG_CHR_DEV_SG=y
 # CONFIG_SCSI_CONSTANTS is not set
 # CONFIG_SCSI_LOGGING is not set
 
+#
+# SCSI Transport Attributes
+#
+CONFIG_SCSI_SPI_ATTRS=y
+CONFIG_SCSI_FC_ATTRS=y
+
 #
 # SCSI low-level drivers
 #
@@ -179,10 +185,6 @@ CONFIG_MD_RAID5=y
 # I2O device support
 #
 
-#
-# Macintosh device drivers
-#
-
 #
 # Networking support
 #
@@ -206,7 +208,6 @@ CONFIG_IP_PNP_BOOTP=y
 # CONFIG_NET_IPIP is not set
 # CONFIG_NET_IPGRE is not set
 # CONFIG_IP_MROUTE is not set
-CONFIG_INET_ECN=y
 # CONFIG_SYN_COOKIES is not set
 # CONFIG_INET_AH is not set
 # CONFIG_INET_ESP is not set
@@ -290,6 +291,8 @@ CONFIG_NET_RADIO=y
 # Bluetooth support
 #
 # CONFIG_BT is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
 
 #
 # ISDN subsystem
@@ -335,6 +338,7 @@ CONFIG_SERIO_GSCPS2=y
 CONFIG_INPUT_KEYBOARD=y
 # CONFIG_KEYBOARD_ATKBD is not set
 # CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_XTKBD is not set
 # CONFIG_KEYBOARD_NEWTON is not set
 # CONFIG_KEYBOARD_HIL_OLD is not set
@@ -342,6 +346,7 @@ CONFIG_INPUT_KEYBOARD=y
 CONFIG_INPUT_MOUSE=y
 # CONFIG_MOUSE_PS2 is not set
 # CONFIG_MOUSE_SERIAL is not set
+# CONFIG_MOUSE_VSXXXAA is not set
 # CONFIG_MOUSE_HIL is not set
 # CONFIG_INPUT_JOYSTICK is not set
 # CONFIG_INPUT_TOUCHSCREEN is not set
@@ -385,11 +390,6 @@ CONFIG_PRINTER=y
 # CONFIG_LP_CONSOLE is not set
 # CONFIG_PPDEV is not set
 # CONFIG_TIPAR is not set
-
-#
-# Mice
-#
-# CONFIG_BUSMOUSE is not set
 # CONFIG_QIC02_TAPE is not set
 
 #
@@ -401,7 +401,6 @@ CONFIG_PRINTER=y
 # Watchdog Cards
 #
 # CONFIG_WATCHDOG is not set
-# CONFIG_NVRAM is not set
 CONFIG_GEN_RTC=y
 # CONFIG_GEN_RTC_X is not set
 # CONFIG_DTLK is not set
@@ -635,6 +634,7 @@ CONFIG_CRYPTO=y
 # CONFIG_CRYPTO_CAST6 is not set
 # CONFIG_CRYPTO_ARC4 is not set
 # CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
 # CONFIG_CRYPTO_TEST is not set
 
 #

arch/parisc/configs/a500_defconfig

@@ -27,7 +27,7 @@ CONFIG_HOTPLUG=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_EMBEDDED=y
-# CONFIG_KALLSYMS is not set
+CONFIG_KALLSYMS=y
 CONFIG_FUTEX=y
 CONFIG_EPOLL=y
 CONFIG_IOSCHED_NOOP=y
@@ -78,6 +78,7 @@ CONFIG_CHASSIS_LCD_LED=y
 # PCMCIA/CardBus support
 #
 CONFIG_PCMCIA=m
+CONFIG_PCMCIA_DEBUG=y
 CONFIG_YENTA=m
 CONFIG_CARDBUS=y
 # CONFIG_I82092 is not set
@@ -129,6 +130,7 @@ CONFIG_BLK_DEV_UMEM=m
 CONFIG_BLK_DEV_LOOP=y
 # CONFIG_BLK_DEV_CRYPTOLOOP is not set
 # CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_CARMEL is not set
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_SIZE=6144
 CONFIG_BLK_DEV_INITRD=y
@@ -162,6 +164,12 @@ CONFIG_SCSI_REPORT_LUNS=y
 # CONFIG_SCSI_CONSTANTS is not set
 # CONFIG_SCSI_LOGGING is not set
 
+#
+# SCSI Transport Attributes
+#
+CONFIG_SCSI_SPI_ATTRS=y
+# CONFIG_SCSI_FC_ATTRS is not set
+
 #
 # SCSI low-level drivers
 #
@@ -242,10 +250,6 @@ CONFIG_FUSION_CTL=m
 # I2O device support
 #
 
-#
-# Macintosh device drivers
-#
-
 #
 # Networking support
 #
@@ -270,7 +274,6 @@ CONFIG_IP_PNP_BOOTP=y
 # CONFIG_NET_IPGRE is not set
 # CONFIG_IP_MROUTE is not set
 # CONFIG_ARPD is not set
-# CONFIG_INET_ECN is not set
 # CONFIG_SYN_COOKIES is not set
 CONFIG_INET_AH=m
 CONFIG_INET_ESP=m
@@ -348,7 +351,6 @@ CONFIG_XFRM_USER=m
 #
 # SCTP Configuration (EXPERIMENTAL)
 #
-CONFIG_IPV6_SCTP__=y
 # CONFIG_IP_SCTP is not set
 # CONFIG_ATM is not set
 # CONFIG_VLAN_8021Q is not set
@@ -504,6 +506,11 @@ CONFIG_PCI_HERMES=m
 CONFIG_PCMCIA_HERMES=m
 CONFIG_AIRO_CS=m
 # CONFIG_PCMCIA_WL3501 is not set
+
+#
+# Prism GT/Duette 802.11(a/b/g) PCI/Cardbus support
+#
+# CONFIG_PRISM54 is not set
 CONFIG_NET_WIRELESS=y
 
 #
@@ -512,6 +519,7 @@ CONFIG_NET_WIRELESS=y
 # CONFIG_TR is not set
 # CONFIG_NET_FC is not set
 # CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
 
 #
 # Wan interfaces
@@ -545,6 +553,8 @@ CONFIG_PCMCIA_XIRC2PS=m
 # Bluetooth support
 #
 # CONFIG_BT is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
 
 #
 # ISDN subsystem
@@ -617,11 +627,6 @@ CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 CONFIG_UNIX98_PTYS=y
 # CONFIG_LEGACY_PTYS is not set
-
-#
-# Mice
-#
-# CONFIG_BUSMOUSE is not set
 # CONFIG_QIC02_TAPE is not set
 
 #
@@ -633,7 +638,6 @@ CONFIG_UNIX98_PTYS=y
 # Watchdog Cards
 #
 # CONFIG_WATCHDOG is not set
-# CONFIG_NVRAM is not set
 CONFIG_GEN_RTC=y
 CONFIG_GEN_RTC_X=y
 # CONFIG_DTLK is not set
@@ -682,7 +686,6 @@ CONFIG_MAX_RAW_DEVS=256
 # Console display driver support
 #
 # CONFIG_MDA_CONSOLE is not set
-# CONFIG_STI_CONSOLE is not set
 CONFIG_DUMMY_CONSOLE_COLUMNS=160
 CONFIG_DUMMY_CONSOLE_ROWS=64
 CONFIG_DUMMY_CONSOLE=y
@@ -788,7 +791,8 @@ CONFIG_LOCKD=m
 CONFIG_LOCKD_V4=y
 CONFIG_EXPORTFS=m
 CONFIG_SUNRPC=m
-# CONFIG_SUNRPC_GSS is not set
+CONFIG_SUNRPC_GSS=m
+CONFIG_RPCSEC_GSS_KRB5=m
 CONFIG_SMB_FS=m
 CONFIG_SMB_NLS_DEFAULT=y
 CONFIG_SMB_NLS_REMOTE="cp437"
@@ -887,6 +891,7 @@ CONFIG_CRYPTO_CAST5=m
 CONFIG_CRYPTO_CAST6=m
 # CONFIG_CRYPTO_ARC4 is not set
 CONFIG_CRYPTO_DEFLATE=m
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
 CONFIG_CRYPTO_TEST=m
 
 #

arch/parisc/configs/b180_defconfig

@@ -121,6 +121,7 @@ CONFIG_PARPORT_GSC=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_CRYPTOLOOP=y
 # CONFIG_BLK_DEV_NBD is not set
+CONFIG_BLK_DEV_CARMEL=y
 # CONFIG_BLK_DEV_RAM is not set
 
 #
@@ -152,6 +153,12 @@ CONFIG_CHR_DEV_SG=y
 # CONFIG_SCSI_CONSTANTS is not set
 # CONFIG_SCSI_LOGGING is not set
 
+#
+# SCSI Transport Attributes
+#
+CONFIG_SCSI_SPI_ATTRS=y
+# CONFIG_SCSI_FC_ATTRS is not set
+
 #
 # SCSI low-level drivers
 #
@@ -244,10 +251,6 @@ CONFIG_MD_RAID5=y
 #
 # CONFIG_I2O is not set
 
-#
-# Macintosh device drivers
-#
-
 #
 # Networking support
 #
@@ -271,7 +274,6 @@ CONFIG_IP_PNP_BOOTP=y
 # CONFIG_NET_IPIP is not set
 # CONFIG_NET_IPGRE is not set
 # CONFIG_IP_MROUTE is not set
-CONFIG_INET_ECN=y
 # CONFIG_SYN_COOKIES is not set
 # CONFIG_INET_AH is not set
 # CONFIG_INET_ESP is not set
@@ -376,6 +378,10 @@ CONFIG_NET_RADIO=y
 #
 # CONFIG_AIRO is not set
 # CONFIG_HERMES is not set
+
+#
+# Prism GT/Duette 802.11(a/b/g) PCI/Cardbus support
+#
 CONFIG_NET_WIRELESS=y
 
 #
@@ -403,6 +409,8 @@ CONFIG_NET_WIRELESS=y
 # Bluetooth support
 #
 # CONFIG_BT is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
 
 #
 # ISDN subsystem
@@ -449,6 +457,7 @@ CONFIG_SERIO_GSCPS2=y
 CONFIG_INPUT_KEYBOARD=y
 # CONFIG_KEYBOARD_ATKBD is not set
 # CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_XTKBD is not set
 # CONFIG_KEYBOARD_NEWTON is not set
 # CONFIG_KEYBOARD_HIL_OLD is not set
@@ -459,6 +468,7 @@ CONFIG_INPUT_MOUSE=y
 # CONFIG_MOUSE_INPORT is not set
 # CONFIG_MOUSE_LOGIBM is not set
 # CONFIG_MOUSE_PC110PAD is not set
+# CONFIG_MOUSE_VSXXXAA is not set
 # CONFIG_MOUSE_HIL is not set
 # CONFIG_INPUT_JOYSTICK is not set
 # CONFIG_INPUT_TOUCHSCREEN is not set
@@ -502,11 +512,6 @@ CONFIG_PRINTER=y
 # CONFIG_LP_CONSOLE is not set
 # CONFIG_PPDEV is not set
 # CONFIG_TIPAR is not set
-
-#
-# Mice
-#
-# CONFIG_BUSMOUSE is not set
 # CONFIG_QIC02_TAPE is not set
 
 #
@@ -518,7 +523,6 @@ CONFIG_PRINTER=y
 # Watchdog Cards
 #
 # CONFIG_WATCHDOG is not set
-# CONFIG_NVRAM is not set
 CONFIG_GEN_RTC=y
 # CONFIG_GEN_RTC_X is not set
 # CONFIG_DTLK is not set
@@ -768,6 +772,7 @@ CONFIG_CRYPTO=y
 # CONFIG_CRYPTO_CAST6 is not set
 # CONFIG_CRYPTO_ARC4 is not set
 # CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
 # CONFIG_CRYPTO_TEST is not set
 
 #

arch/parisc/configs/c3000_defconfig

@@ -77,6 +77,7 @@ CONFIG_SUPERIO=y
 # PCMCIA/CardBus support
 #
 CONFIG_PCMCIA=m
+CONFIG_PCMCIA_DEBUG=y
 CONFIG_YENTA=m
 CONFIG_CARDBUS=y
 # CONFIG_I82092 is not set
@@ -128,6 +129,7 @@ CONFIG_BLK_DEV_UMEM=m
 CONFIG_BLK_DEV_LOOP=y
 # CONFIG_BLK_DEV_CRYPTOLOOP is not set
 # CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_CARMEL is not set
 # CONFIG_BLK_DEV_RAM is not set
 
 #
@@ -212,6 +214,12 @@ CONFIG_SCSI_REPORT_LUNS=y
 # CONFIG_SCSI_CONSTANTS is not set
 # CONFIG_SCSI_LOGGING is not set
 
+#
+# SCSI Transport Attributes
+#
+CONFIG_SCSI_SPI_ATTRS=y
+# CONFIG_SCSI_FC_ATTRS is not set
+
 #
 # SCSI low-level drivers
 #
@@ -230,6 +238,7 @@ CONFIG_SCSI_ATA_PIIX=m
 CONFIG_SCSI_SATA_PROMISE=m
 CONFIG_SCSI_SATA_SIL=m
 CONFIG_SCSI_SATA_VIA=m
+# CONFIG_SCSI_SATA_VITESSE is not set
 # CONFIG_SCSI_BUSLOGIC is not set
 # CONFIG_SCSI_CPQFCTS is not set
 # CONFIG_SCSI_DMX3191D is not set
@@ -303,10 +312,6 @@ CONFIG_FUSION_CTL=m
 #
 # CONFIG_I2O is not set
 
-#
-# Macintosh device drivers
-#
-
 #
 # Networking support
 #
@@ -331,7 +336,6 @@ CONFIG_IP_PNP_BOOTP=y
 # CONFIG_NET_IPGRE is not set
 # CONFIG_IP_MROUTE is not set
 # CONFIG_ARPD is not set
-# CONFIG_INET_ECN is not set
 # CONFIG_SYN_COOKIES is not set
 CONFIG_INET_AH=m
 CONFIG_INET_ESP=m
@@ -409,7 +413,6 @@ CONFIG_XFRM_USER=m
 #
 # SCTP Configuration (EXPERIMENTAL)
 #
-CONFIG_IPV6_SCTP__=y
 # CONFIG_IP_SCTP is not set
 # CONFIG_ATM is not set
 # CONFIG_VLAN_8021Q is not set
@@ -543,6 +546,7 @@ CONFIG_PPPOE=m
 # CONFIG_NET_FC is not set
 # CONFIG_RCPCI is not set
 # CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
 
 #
 # Wan interfaces
@@ -576,6 +580,8 @@ CONFIG_PCMCIA_AXNET=m
 # Bluetooth support
 #
 # CONFIG_BT is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
 
 #
 # ISDN subsystem
@@ -619,6 +625,7 @@ CONFIG_SERIO_SERPORT=m
 CONFIG_INPUT_KEYBOARD=y
 # CONFIG_KEYBOARD_ATKBD is not set
 # CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_XTKBD is not set
 # CONFIG_KEYBOARD_NEWTON is not set
 # CONFIG_KEYBOARD_HIL_OLD is not set
@@ -626,6 +633,7 @@ CONFIG_INPUT_KEYBOARD=y
 CONFIG_INPUT_MOUSE=y
 # CONFIG_MOUSE_PS2 is not set
 # CONFIG_MOUSE_SERIAL is not set
+# CONFIG_MOUSE_VSXXXAA is not set
 # CONFIG_MOUSE_HIL is not set
 # CONFIG_INPUT_JOYSTICK is not set
 # CONFIG_INPUT_TOUCHSCREEN is not set
@@ -663,11 +671,6 @@ CONFIG_SERIAL_CORE_CONSOLE=y
 CONFIG_UNIX98_PTYS=y
 CONFIG_LEGACY_PTYS=y
 CONFIG_LEGACY_PTY_COUNT=256
-
-#
-# Mice
-#
-# CONFIG_BUSMOUSE is not set
 # CONFIG_QIC02_TAPE is not set
 
 #
@@ -679,7 +682,6 @@ CONFIG_LEGACY_PTY_COUNT=256
 # Watchdog Cards
 #
 # CONFIG_WATCHDOG is not set
-# CONFIG_NVRAM is not set
 CONFIG_GEN_RTC=y
 CONFIG_GEN_RTC_X=y
 # CONFIG_DTLK is not set
@@ -831,7 +833,9 @@ CONFIG_USB_AIPTEK=m
 CONFIG_USB_WACOM=m
 CONFIG_USB_KBTAB=m
 # CONFIG_USB_POWERMATE is not set
+# CONFIG_USB_MTOUCH is not set
 # CONFIG_USB_XPAD is not set
+# CONFIG_USB_ATI_REMOTE is not set
 
 #
 # USB Imaging devices
@@ -968,7 +972,7 @@ CONFIG_LOCKD=y
 CONFIG_LOCKD_V4=y
 CONFIG_EXPORTFS=y
 CONFIG_SUNRPC=y
-# CONFIG_SUNRPC_GSS is not set
+# CONFIG_RPCSEC_GSS_KRB5 is not set
 # CONFIG_SMB_FS is not set
 # CONFIG_CIFS is not set
 # CONFIG_NCP_FS is not set
@@ -1065,6 +1069,7 @@ CONFIG_CRYPTO_CAST5=m
 CONFIG_CRYPTO_CAST6=m
 # CONFIG_CRYPTO_ARC4 is not set
 CONFIG_CRYPTO_DEFLATE=m
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
 CONFIG_CRYPTO_TEST=m
 
 #

arch/parisc/kernel/Makefile

@@ -14,7 +14,7 @@ obj-y	     	:= cache.o pacache.o setup.o traps.o time.o irq.o \
 		   pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \
 		   ptrace.o hardware.o inventory.o drivers.o semaphore.o \
 		   signal.o hpmc.o real2.o parisc_ksyms.o unaligned.o \
-		   process.o processor.o pdc_cons.o pdc_chassis.o
+		   process.o processor.o pdc_cons.o pdc_chassis.o unwind.o
 
 obj-$(CONFIG_SMP)	+= smp.o
 obj-$(CONFIG_PA11)	+= pci-dma.o

arch/parisc/kernel/asm-offsets.c

@@ -32,6 +32,7 @@
 #include <linux/thread_info.h>
 #include <linux/version.h>
 #include <linux/ptrace.h>
+#include <asm/pgtable.h>
 
 #include <asm/ptrace.h>
 #include <asm/processor.h>
@@ -276,5 +277,19 @@ int main(void)
 	DEFINE(PA_BLOCKSTEP_BIT, 31-PT_BLOCKSTEP_BIT);
 	DEFINE(PA_SINGLESTEP_BIT, 31-PT_SINGLESTEP_BIT);
 	BLANK();
+	DEFINE(ASM_PMD_SHIFT, PMD_SHIFT);
+	DEFINE(ASM_PGDIR_SHIFT, PGDIR_SHIFT);
+	DEFINE(ASM_BITS_PER_PGD, BITS_PER_PGD);
+	DEFINE(ASM_BITS_PER_PMD, BITS_PER_PMD);
+	DEFINE(ASM_BITS_PER_PTE, BITS_PER_PTE);
+	DEFINE(ASM_PGD_PMD_OFFSET, -(PAGE_SIZE << PGD_ORDER));
+	DEFINE(ASM_PMD_ENTRY, ((PAGE_OFFSET & PMD_MASK) >> PMD_SHIFT));
+	DEFINE(ASM_PGD_ENTRY, PAGE_OFFSET >> PGDIR_SHIFT);
+	DEFINE(ASM_PGD_ENTRY_SIZE, PGD_ENTRY_SIZE);
+	DEFINE(ASM_PMD_ENTRY_SIZE, PMD_ENTRY_SIZE);
+	DEFINE(ASM_PTE_ENTRY_SIZE, PTE_ENTRY_SIZE);
+	DEFINE(ASM_PT_INITIAL, PT_INITIAL);
+	DEFINE(ASM_PAGE_SIZE, PAGE_SIZE);
+	BLANK();
 	return 0;
 }

arch/parisc/kernel/cache.c

@@ -230,27 +230,22 @@ void disable_sr_hashing(void)
 void __flush_dcache_page(struct page *page)
 {
 	struct address_space *mapping = page_mapping(page);
-	struct mm_struct *mm = current->active_mm;
 	struct list_head *l;
 
 	flush_kernel_dcache_page(page_address(page));
 
 	if (!mapping)
 		return;
-	/* check shared list first if it's not empty...it's usually
-	 * the shortest */
+
+	/* We have ensured in arch_get_unmapped_area() that all shared
+	 * mappings are mapped at equivalent addresses, so we only need
+	 * to flush one for them all to become coherent */
 	list_for_each(l, &mapping->i_mmap_shared) {
 		struct vm_area_struct *mpnt;
-		unsigned long off;
+		unsigned long off, addr;
 
 		mpnt = list_entry(l, struct vm_area_struct, shared);
 
-		/*
-		 * If this VMA is not in our MM, we can ignore it.
-		 */
-		if (mpnt->vm_mm != mm)
-			continue;
-
 		if (page->index < mpnt->vm_pgoff)
 			continue;
 
@@ -258,26 +253,35 @@ void __flush_dcache_page(struct page *page)
 		if (off >= (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT)
 			continue;
 
-		flush_cache_page(mpnt, mpnt->vm_start + (off << PAGE_SHIFT));
+		addr = mpnt->vm_start + (off << PAGE_SHIFT);
+
+		/* flush instructions produce non access tlb misses.
+		 * On PA, we nullify these instructions rather than 
+		 * taking a page fault if the pte doesn't exist, so we
+		 * have to find a congruent address with an existing
+		 * translation */
+
+		if (!translation_exists(mpnt, addr))
+			continue;
+
+		__flush_cache_page(mpnt, addr);
 
-		/* All user shared mappings should be equivalently mapped,
-		 * so once we've flushed one we should be ok
-		 */
+		/* If we find an address to flush, that will also
+		 * bring all the private mappings up to date (see
+		 * comment below) */
 		return;
 	}
 
-	/* then check private mapping list for read only shared mappings
-	 * which are flagged by VM_MAYSHARE */
+	/* we have carefully arranged in arch_get_unmapped_area() that
+	 * *any* mappings of a file are always congruently mapped (whether
+	 * declared as MAP_PRIVATE or MAP_SHARED), so we only need
+	 * to flush one address here too */
 	list_for_each(l, &mapping->i_mmap) {
 		struct vm_area_struct *mpnt;
-		unsigned long off;
+		unsigned long off, addr;
 
 		mpnt = list_entry(l, struct vm_area_struct, shared);
 
-
-		if (mpnt->vm_mm != mm || !(mpnt->vm_flags & VM_MAYSHARE))
-			continue;
-
 		if (page->index < mpnt->vm_pgoff)
 			continue;
 
@@ -285,12 +289,17 @@ void __flush_dcache_page(struct page *page)
 		if (off >= (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT)
 			continue;
 
-		flush_cache_page(mpnt, mpnt->vm_start + (off << PAGE_SHIFT));
+		addr = mpnt->vm_start + (off << PAGE_SHIFT);
 
-		/* All user shared mappings should be equivalently mapped,
-		 * so once we've flushed one we should be ok
-		 */
-		break;
+		/* This is just for speed.  If the page translation isn't
+		 * there there's no point exciting the nadtlb handler into
+		 * a nullification frenzy */
+		if(!translation_exists(mpnt, addr))
+			continue;
+
+		__flush_cache_page(mpnt, addr);
+
+		return;
 	}
 }
 EXPORT_SYMBOL(__flush_dcache_page);

arch/parisc/kernel/firmware.c

@@ -10,6 +10,7 @@
  * Copyright 1999 SuSE GmbH Nuernberg (Philipp Rumpf, prumpf@tux.org)
  * Copyright 1999 The Puffin Group, (Alex deVries, David Kennedy)
  * Copyright 2003 Grant Grundler <grundler parisc-linux org>
+ * Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org>
  *
  *    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
@@ -71,6 +72,15 @@ static spinlock_t pdc_lock = SPIN_LOCK_UNLOCKED;
 static unsigned long pdc_result[32] __attribute__ ((aligned (8)));
 static unsigned long pdc_result2[32] __attribute__ ((aligned (8)));
 
+#ifdef __LP64__
+#define WIDE_FIRMWARE 0x1
+#define NARROW_FIRMWARE 0x2
+
+/* Firmware needs to be initially set to narrow to determine the 
+ * actual firmware width. */
+int parisc_narrow_firmware = 1;
+#endif
+
 /* on all currently-supported platforms, IODC I/O calls are always
  * 32-bit calls, and MEM_PDC calls are always the same width as the OS.
  * This means Cxxx boxes can't run wide kernels right now. -PB
@@ -87,11 +97,11 @@ long real64_call(unsigned long function, ...);
 #endif
 long real32_call(unsigned long function, ...);
 
-#if defined(__LP64__) && ! defined(CONFIG_PDC_NARROW)
-#define MEM_PDC (unsigned long)(PAGE0->mem_pdc_hi) << 32 | PAGE0->mem_pdc
-#   define mem_pdc_call(args...) real64_call(MEM_PDC, args)
+#ifdef __LP64__
+#   define MEM_PDC (unsigned long)(PAGE0->mem_pdc_hi) << 32 | PAGE0->mem_pdc
+#   define mem_pdc_call(args...) unlikely(parisc_narrow_firmware) ? real32_call(MEM_PDC, args) : real64_call(MEM_PDC, args)
 #else
-#define MEM_PDC (unsigned long)PAGE0->mem_pdc
+#   define MEM_PDC (unsigned long)PAGE0->mem_pdc
 #   define mem_pdc_call(args...) real32_call(MEM_PDC, args)
 #endif
 
@@ -105,12 +115,14 @@ long real32_call(unsigned long function, ...);
  */
 static unsigned long f_extend(unsigned long address)
 {
-#ifdef CONFIG_PDC_NARROW
-	if((address & 0xff000000) == 0xf0000000)
-		return 0xf0f0f0f000000000 | (u32)address;
+#ifdef __LP64__
+	if(unlikely(parisc_narrow_firmware)) {
+		if((address & 0xff000000) == 0xf0000000)
+			return 0xf0f0f0f000000000 | (u32)address;
 
-	if((address & 0xf0000000) == 0xf0000000)
-		return 0xffffffff00000000 | (u32)address;
+		if((address & 0xf0000000) == 0xf0000000)
+			return 0xffffffff00000000 | (u32)address;
+	}
 #endif
 	return address;
 }
@@ -125,11 +137,34 @@ static unsigned long f_extend(unsigned long address)
  */
 static void convert_to_wide(unsigned long *addr)
 {
-#ifdef CONFIG_PDC_NARROW
+#ifdef __LP64__
 	int i;
-	unsigned *p = (unsigned int *)addr;
-	for(i = 31; i >= 0; --i)
-		addr[i] = p[i];
+	unsigned int *p = (unsigned int *)addr;
+
+	if(unlikely(parisc_narrow_firmware)) {
+		for(i = 31; i >= 0; --i)
+			addr[i] = p[i];
+	}
+#endif
+}
+
+/**
+ * set_firmware_width - Determine if the firmware is wide or narrow.
+ * 
+ * This function must be called before any pdc_* function that uses the convert_to_wide
+ * function.
+ */
+void __init set_firmware_width(void)
+{
+#ifdef __LP64__
+	int retval;
+
+        spin_lock_irq(&pdc_lock);
+	retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
+	convert_to_wide(pdc_result);
+	if(pdc_result[0] != NARROW_FIRMWARE)
+		parisc_narrow_firmware = 0;
+        spin_unlock_irq(&pdc_lock);
 #endif
 }
 
@@ -582,6 +617,7 @@ int pdc_get_initiator(struct hardware_path *hwpath, unsigned char *scsi_id,
 		case 10:  *period = 1000; break;
 		case 20:  *period = 500; break;
 		case 40:  *period = 250; break;
+		case 80:  *period = 125; break;
 		default: /* Do nothing */ break;
 	}
 

arch/parisc/kernel/hardware.c

@@ -1273,8 +1273,8 @@ static struct hp_cpu_type_mask {
 	{ 0x05e6, 0x0ffe, pcxw2  },  /* 0x05e6 - 0x05e7 */
 	{ 0x05e8, 0x0ff8, pcxw2  },  /* 0x05e8 - 0x05ef */
 	{ 0x05f0, 0x0ff0, pcxw2  },  /* 0x05f0 - 0x05ff */
-	{ 0x0600, 0x0ff0, pcxl   },  /* 0x0600 - 0x060f */
-	{ 0x0610, 0x0ff0, pcxl   },  /* 0x0610 - 0x061f */
+	{ 0x0600, 0x0fe0, pcxl   },  /* 0x0600 - 0x061f */
+	{ 0x0880, 0x0ff0, mako   },  /* 0x0880 - 0x088f */
 	{ 0x0000, 0x0000, pcx    }	/* terminate table */
 };
 
@@ -1289,7 +1289,8 @@ char *cpu_name_version[][2] = {
 	[pcxu_]	{ "PA8200 (PCX-U+)",	"2.0" },
 	[pcxw]	{ "PA8500 (PCX-W)",	"2.0" },
 	[pcxw_]	{ "PA8600 (PCX-W+)",	"2.0" },
-	[pcxw2]	{ "PA8700 (PCX-W2)",	"2.0" }
+	[pcxw2]	{ "PA8700 (PCX-W2)",	"2.0" },
+	[mako]	{ "PA8800 (MAKO)",	"2.0" }
 };
 
 const char * __init

arch/parisc/kernel/head.S

@@ -82,19 +82,21 @@ $bss_loop:
 	ldo		R%PA(swapper_pg_dir)(%r4),%r4
 	mtctl		%r4,%cr24	/* Initialize kernel root pointer */
 	mtctl		%r4,%cr25	/* Initialize user root pointer */
+	ldi		ASM_PT_INITIAL,%r1
+	ldo		ASM_PGD_ENTRY*ASM_PGD_ENTRY_SIZE(%r4),%r4
+1:
+	stw             %r3,0(%r4)
+	ldo		ASM_PAGE_SIZE(%r3),%r3
+	addib,>		-1,%r1,1b
+	ldo		ASM_PGD_ENTRY_SIZE(%r4),%r4
 
-#if (__PAGE_OFFSET != 0x10000000UL)
-Error! Code below (the next two stw's) needs to be changed
-#endif
-
-	stw             %r3,0x100(%r4)  /* Hardwired 0x1... kernel Vaddr start*/
-	ldo		0x1000(%r3),%r3
-	stw             %r3,0x104(%r4)
 	ldo		_PAGE_KERNEL(%r0),%r3 /* Hardwired 0 phys addr start */
+	ldil		L%PA(pg0),%r1
+	ldo		R%PA(pg0)(%r1),%r1
 $pgt_fill_loop:
-	stwm		%r3,4(%r1)
-	ldo		0x1000(%r3),%r3
-	bb,>=		%r3,8,$pgt_fill_loop
+	stwm		%r3,ASM_PTE_ENTRY_SIZE(%r1)
+	ldo		ASM_PAGE_SIZE(%r3),%r3
+	bb,>=		%r3,31-KERNEL_INITIAL_ORDER,$pgt_fill_loop
 	nop
 
 

arch/parisc/kernel/head64.S

@@ -88,26 +88,25 @@ $bss_loop:
 	mtctl		%r4,%cr24	/* Initialize kernel root pointer */
 	mtctl		%r4,%cr25	/* Initialize user root pointer */
 
-#if (__PAGE_OFFSET != 0x10000000UL)
-Error! Code below (the next five std's) needs to be changed
-#endif
-
-	std             %r3,0x00(%r4)   /* Hardwired 0x1... kernel Vaddr start*/
+	stw             %r3,ASM_PGD_ENTRY*ASM_PGD_ENTRY_SIZE(%r4)
 
 	ldo		_PAGE_TABLE(%r1),%r3
-	std             %r3,0x400(%r5)  /* Hardwired 0x1... kernel Vaddr start*/
-	ldo		0x1000(%r3),%r3
-	std             %r3,0x408(%r5)
-	ldo		0x1000(%r3),%r3
-	std             %r3,0x410(%r5)
-	ldo		0x1000(%r3),%r3
-	std             %r3,0x418(%r5)
+	ldo		ASM_PMD_ENTRY*ASM_PMD_ENTRY_SIZE(%r5),%r5
+	ldi		ASM_PT_INITIAL,%r1
+1:
+	stw		%r3,0(%r5)
+	ldo		ASM_PAGE_SIZE(%r3),%r3
+	addib,>		-1,%r1,1b
+	ldo		ASM_PMD_ENTRY_SIZE(%r5),%r5
 
 	ldo		_PAGE_KERNEL(%r0),%r3 /* Hardwired 0 phys addr start */
+	ldil		L%PA(pg0),%r1
+	ldo		R%PA(pg0)(%r1),%r1
+
 $pgt_fill_loop:
-	std,ma		%r3,8(%r1)
-	ldo		0x1000(%r3),%r3
-	bb,>=		%r3,8,$pgt_fill_loop
+	std,ma		%r3,ASM_PTE_ENTRY_SIZE(%r1)
+	ldo		ASM_PAGE_SIZE(%r3),%r3
+	bb,>=		%r3,31-KERNEL_INITIAL_ORDER,$pgt_fill_loop
 	nop
 
 	/* And the RFI Target address too */
@@ -169,7 +168,6 @@ common_stext:
 	tophys_r1	%r10
 	std		%r11,  TASK_PT_GR11(%r10)
 
-#ifndef CONFIG_PDC_NARROW
 	/* Switch to wide mode; Superdome doesn't support narrow PDC
 	** calls.
 	*/
@@ -179,7 +177,6 @@ common_stext:
 	bv		(%rp)
 	ssm		PSW_SM_W,%r0
 2:
-#endif /* CONFIG_PDC_NARROW */
 
 	/* Set Wide mode as the "Default" (eg for traps)
 	** First trap occurs *right* after (or part of) rfi for slave CPUs.

arch/parisc/kernel/init_task.c

@@ -52,11 +52,13 @@ union thread_union init_thread_union
 	__attribute__((aligned(128))) __attribute__((__section__(".data.init_task"))) =
 		{ INIT_THREAD_INFO(init_task) };
 
-pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__ ((aligned(4096))) = { {0}, };
 #ifdef __LP64__
-unsigned long pmd0[PTRS_PER_PMD] __attribute__ ((aligned(4096))) = { 0, };
+/* NOTE: This layout exactly conforms to the hybrid L2/L3 page table layout
+ * with the first pmd adjacent to the pgd and below it */
+pmd_t pmd0[PTRS_PER_PMD] __attribute__ ((aligned(PAGE_SIZE))) = { {0}, };
 #endif
-unsigned long pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((aligned(4096))) = { 0, };
+pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__ ((aligned(PAGE_SIZE))) = { {0}, };
+pte_t pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((aligned(PAGE_SIZE))) = { {0}, };
 
 /*
  * Initial task structure.

arch/parisc/kernel/pacache.S

@@ -350,10 +350,6 @@ copy_user_page_asm:
 
 	.procend
 
-#if (TMPALIAS_MAP_START >= 0x80000000UL)
-Warning TMPALIAS_MAP_START changed. If > 2 Gb, code in pacache.S is bogus
-#endif
-
 /*
  * NOTE: Code in clear_user_page has a hard coded dependency on the
  *       maximum alias boundary being 4 Mb. We've been assured by the
@@ -490,6 +486,9 @@ clear_user_page_asm:
 
 	ldil    L%(TMPALIAS_MAP_START),%r28
 #ifdef __LP64__
+#if (TMPALIAS_MAP_START >= 0x80000000)
+	depdi	0,31,32,%r28	/* clear any sign extension */
+#endif
 	extrd,u %r26,56,32,%r26 /* convert phys addr to tlb insert format */
 	depd    %r25,63,22,%r28 /* Form aliased virtual address 'to' */
 	depdi   0,63,12,%r28    /* Clear any offset bits */
@@ -574,6 +573,95 @@ flush_kernel_dcache_page:
 	.exit
 
 	.procend
+	
+	.export flush_user_dcache_page
+
+flush_user_dcache_page:
+	.proc
+	.callinfo NO_CALLS
+	.entry
+
+	ldil    L%dcache_stride,%r1
+	ldw     R%dcache_stride(%r1),%r23
+
+#ifdef __LP64__
+	depdi,z 1,63-PAGE_SHIFT,1,%r25
+#else
+	depwi,z 1,31-PAGE_SHIFT,1,%r25
+#endif
+	add     %r26,%r25,%r25
+	sub     %r25,%r23,%r25
+
+
+1:      fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	fdc,m   %r23(%sr3,%r26)
+	CMPB<<  %r26,%r25,1b
+	fdc,m   %r23(%sr3,%r26)
+
+	sync
+	bv      %r0(%r2)
+	nop
+	.exit
+
+	.procend
+
+	.export flush_user_icache_page
+
+flush_user_icache_page:
+	.proc
+	.callinfo NO_CALLS
+	.entry
+
+	ldil    L%dcache_stride,%r1
+	ldw     R%dcache_stride(%r1),%r23
+
+#ifdef __LP64__
+	depdi,z 1,63-PAGE_SHIFT,1,%r25
+#else
+	depwi,z 1,31-PAGE_SHIFT,1,%r25
+#endif
+	add     %r26,%r25,%r25
+	sub     %r25,%r23,%r25
+
+
+1:      fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	fic,m   %r23(%sr3,%r26)
+	CMPB<<  %r26,%r25,1b
+	fic,m   %r23(%sr3,%r26)
+
+	sync
+	bv      %r0(%r2)
+	nop
+	.exit
+
+	.procend
+
 
 	.export purge_kernel_dcache_page
 

arch/parisc/kernel/pci-dma.c

@@ -539,10 +539,10 @@ struct hppa_dma_ops pcx_dma_ops = {
 	.unmap_single =		pa11_dma_unmap_single,
 	.map_sg =		pa11_dma_map_sg,
 	.unmap_sg =		pa11_dma_unmap_sg,
-	.dma_sync_single_cpu =	pa11_dma_sync_single_cpu,
-	.dma_sync_single_device = pa11_dma_sync_single_device,
-	.dma_sync_sg_cpu =	pa11_dma_sync_sg_cpu,
-	.dma_sync_sg_device =	pa11_dma_sync_sg_device,
+	.dma_sync_single_for_cpu =	pa11_dma_sync_single_for_cpu,
+	.dma_sync_single_for_device =	pa11_dma_sync_single_for_device,
+	.dma_sync_sg_for_cpu =		pa11_dma_sync_sg_for_cpu,
+	.dma_sync_sg_for_device =	pa11_dma_sync_sg_for_device,
 };
 
 

arch/parisc/kernel/perf.c

@@ -506,9 +506,11 @@ static int __init perf_init(void)
 		perf_processor_interface = ONYX_INTF;
 	} else if (boot_cpu_data.cpu_type == pcxw ||
 		 boot_cpu_data.cpu_type == pcxw_ ||
-		 boot_cpu_data.cpu_type == pcxw2) {
+		 boot_cpu_data.cpu_type == pcxw2 ||
+		 boot_cpu_data.cpu_type == mako) {
 		perf_processor_interface = CUDA_INTF;
-		if (boot_cpu_data.cpu_type == pcxw2) 
+		if (boot_cpu_data.cpu_type == pcxw2 ||
+		    boot_cpu_data.cpu_type == mako) 
 			bitmask_array = perf_bitmasks_piranha;
 	} else {
 		perf_processor_interface = UNKNOWN_INTF;

arch/parisc/kernel/process.c

@@ -44,6 +44,7 @@
 #include <linux/sched.h>
 #include <linux/stddef.h>
 #include <linux/unistd.h>
+#include <linux/kallsyms.h>
 
 #include <asm/io.h>
 #include <asm/offsets.h>
@@ -51,6 +52,7 @@
 #include <asm/pdc_chassis.h>
 #include <asm/pgalloc.h>
 #include <asm/uaccess.h>
+#include <asm/unwind.h>
 
 int hlt_counter;
 
@@ -368,3 +370,28 @@ asmlinkage int sys_execve(struct pt_regs *regs)
 
 	return error;
 }
+
+unsigned long 
+get_wchan(struct task_struct *p)
+{
+	struct unwind_frame_info info;
+	unsigned long ip;
+	int count = 0;
+	/*
+	 * These bracket the sleeping functions..
+	 */
+#	define first_sched	((unsigned long) scheduling_functions_start_here)
+#	define last_sched	((unsigned long) scheduling_functions_end_here)
+
+	unwind_frame_init_from_blocked_task(&info, p);
+	do {
+		if (unwind_once(&info) < 0)
+			return 0;
+		ip = info.ip;
+		if (ip < first_sched || ip >= last_sched)
+			return ip;
+	} while (count++ < 16);
+	return 0;
+#	undef first_sched
+#	undef last_sched
+}

arch/parisc/kernel/processor.c

@@ -231,9 +231,7 @@ void __init collect_boot_cpu_data(void)
 	boot_cpu_data.hversion =  boot_cpu_data.pdc.model.hversion;
 	boot_cpu_data.sversion =  boot_cpu_data.pdc.model.sversion;
 
-	boot_cpu_data.cpu_type =
-			parisc_get_cpu_type(boot_cpu_data.hversion);
-
+	boot_cpu_data.cpu_type = parisc_get_cpu_type(boot_cpu_data.hversion);
 	boot_cpu_data.cpu_name = cpu_name_version[boot_cpu_data.cpu_type][0];
 	boot_cpu_data.family_name = cpu_name_version[boot_cpu_data.cpu_type][1];
 }
@@ -276,6 +274,7 @@ int __init init_per_cpu(int cpunum)
 	int ret;
 	struct pdc_coproc_cfg coproc_cfg;
 
+	set_firmware_width();
 	ret = pdc_coproc_cfg(&coproc_cfg);
 
 	if(ret >= 0 && coproc_cfg.ccr_functional) {

arch/parisc/kernel/real2.S

@@ -26,6 +26,7 @@ real_stack:
 
 save_cr_space:
 	.block	REG_SZ * N_SAVED_REGS
+save_cr_end:
 
 
 /************************ 32-bit real-mode calls ***********************/
@@ -123,7 +124,7 @@ save_control_regs:
 	nop
 
 restore_control_regs:
-	load32	PA(save_cr_space+(N_SAVED_REGS*REG_SZ)), %r26
+	load32	PA(save_cr_end), %r26
 	POP_CR(%cr15, %r26)
 	POP_CR(%cr31, %r26)
 	POP_CR(%cr30, %r26)

arch/parisc/kernel/setup.c

@@ -121,8 +121,11 @@ void __init setup_arch(char **cmdline_p)
 
 	pdc_console_init();
 
-#ifdef CONFIG_PDC_NARROW
-	printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
+#ifdef __LP64__
+	extern int parisc_narrow_firmware;
+	if(parisc_narrow_firmware) {
+		printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
+	}
 #endif
 	setup_pdc();
 	setup_cmdline(cmdline_p);
@@ -204,6 +207,7 @@ static void __init parisc_proc_mkdir(void)
         case pcxw:
         case pcxw_:
         case pcxw2:
+	case mako:	/* XXX : this is really mckinley bus */
                 if (NULL == proc_runway_root)
                 {
                         proc_runway_root = proc_mkdir("bus/runway", 0);

arch/parisc/kernel/signal.c

@@ -353,12 +353,17 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 		goto give_sigsegv;
 
 	/* Set up to return from userspace.  If provided, use a stub
-	   already in userspace.  */
+	   already in userspace. The first words of tramp are used to
+	   save the previous sigrestartblock trampoline that might be
+	   on the stack. We start the sigreturn trampoline at 
+	   SIGRESTARTBLOCK_TRAMP+X. */
 	err |= __put_user(in_syscall ? INSN_LDI_R25_1 : INSN_LDI_R25_0,
-			&frame->tramp[SIGRETURN_TRAMP+0]);
-	err |= __put_user(INSN_LDI_R20, &frame->tramp[SIGRETURN_TRAMP+1]);
-	err |= __put_user(INSN_BLE_SR2_R0, &frame->tramp[SIGRETURN_TRAMP+2]);
-	err |= __put_user(INSN_NOP, &frame->tramp[SIGRETURN_TRAMP+3]);
+			&frame->tramp[SIGRESTARTBLOCK_TRAMP+0]);
+	err |= __put_user(INSN_LDI_R20, 
+			&frame->tramp[SIGRESTARTBLOCK_TRAMP+1]);
+	err |= __put_user(INSN_BLE_SR2_R0, 
+			&frame->tramp[SIGRESTARTBLOCK_TRAMP+2]);
+	err |= __put_user(INSN_NOP, &frame->tramp[SIGRESTARTBLOCK_TRAMP+3]);
 
 #if DEBUG_SIG
 	/* Assert that we're flushing in the correct space... */
@@ -370,12 +375,16 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	}
 #endif
 
-	flush_user_dcache_range((unsigned long) &frame->tramp[SIGRETURN_TRAMP],
+	flush_user_dcache_range((unsigned long) &frame->tramp[0],
 			   (unsigned long) &frame->tramp[TRAMP_SIZE]);
-	flush_user_icache_range((unsigned long) &frame->tramp[SIGRETURN_TRAMP],
+	flush_user_icache_range((unsigned long) &frame->tramp[0],
 			   (unsigned long) &frame->tramp[TRAMP_SIZE]);
 
-	rp = (unsigned long) &frame->tramp[SIGRETURN_TRAMP];
+	/* TRAMP Words 0-4, Lenght 5 = SIGRESTARTBLOCK_TRAMP
+	 * TRAMP Words 5-9, Length 4 = SIGRETURN_TRAMP
+	 * So the SIGRETURN_TRAMP is at the end of SIGRESTARTBLOCK_TRAMP
+	 */
+	rp = (unsigned long) &frame->tramp[SIGRESTARTBLOCK_TRAMP];
 
 	if (err)
 		goto give_sigsegv;

arch/parisc/kernel/smp.c

@@ -3,7 +3,7 @@
 **
 ** Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
 ** Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com>
-** Copyright (C) 2001 Grant Grundler <grundler@parisc-linux.org>
+** Copyright (C) 2001,2004 Grant Grundler <grundler@parisc-linux.org>
 ** 
 ** Lots of stuff stolen from arch/alpha/kernel/smp.c
 ** ...and then parisc stole from arch/ia64/kernel/smp.c. Thanks David! :^)
@@ -60,20 +60,16 @@ spinlock_t smp_lock = SPIN_LOCK_UNLOCKED;
 
 volatile struct task_struct *smp_init_current_idle_task;
 
-static volatile int smp_commenced = 0;   /* Set when the idlers are all forked */
-static volatile int cpu_now_booting = 0;      /* track which CPU is booting */
-cpumask_t cpu_online_map = CPU_MASK_NONE;   /* Bitmap of online CPUs */
-#define IS_LOGGED_IN(cpunum) (cpu_isset(cpunum, cpu_online_map))
+static volatile int cpu_now_booting = 0;	/* track which CPU is booting */
+static int parisc_max_cpus = -1;		/* Command line */
 
-EXPORT_SYMBOL(cpu_online_map);
+unsigned long cache_decay_ticks;	/* declared by include/linux/sched.h */
+cpumask_t cpu_online_map = CPU_MASK_NONE;	/* Bitmap of online CPUs */
+cpumask_t cpu_possible_map = CPU_MASK_NONE;	/* Bitmap of Present CPUs */
 
-int smp_num_cpus = 1;
-int smp_threads_ready = 0;
-unsigned long cache_decay_ticks;
-static int max_cpus = -1;			     /* Command line */
-cpumask_t cpu_present_mask;
+EXPORT_SYMBOL(cpu_online_map);
+EXPORT_SYMBOL(cpu_possible_map);
 
-EXPORT_SYMBOL(cpu_present_mask);
 
 struct smp_call_struct {
 	void (*func) (void *info);
@@ -114,7 +110,7 @@ ipi_init(int cpuid)
 
 #error verify IRQ_OFFSET(IPI_IRQ) is ipi_interrupt() in new IRQ region
 
-	if(IS_LOGGED_IN(cpuid) )
+	if(cpu_online(cpuid) )
 	{
 		switch_to_idle_task(current);
 	}
@@ -293,12 +289,13 @@ send_IPI_allbutself(enum ipi_message_type op)
 {
 	int i;
 	
-	for (i = 0; i < smp_num_cpus; i++) {
-		if (i != smp_processor_id())
+	for (i = 0; i < parisc_max_cpus; i++) {
+		if (cpu_online(i) && i != smp_processor_id())
 			send_IPI_single(i, op);
 	}
 }
 
+
 inline void 
 smp_send_stop(void)	{ send_IPI_allbutself(IPI_CPU_STOP); }
 
@@ -334,8 +331,8 @@ smp_call_function (void (*func) (void *info), void *info, int retry, int wait)
 	data.func = func;
 	data.info = info;
 	data.wait = wait;
-	atomic_set(&data.unstarted_count, smp_num_cpus - 1);
-	atomic_set(&data.unfinished_count, smp_num_cpus - 1);
+	atomic_set(&data.unstarted_count, num_online_cpus() - 1);
+	atomic_set(&data.unfinished_count, num_online_cpus() - 1);
 
 	if (retry) {
 		spin_lock (&lock);
@@ -395,7 +392,7 @@ EXPORT_SYMBOL(smp_call_function);
 
 static int __init nosmp(char *str)
 {
-	max_cpus = 0;
+	parisc_max_cpus = 0;
 	return 1;
 }
 
@@ -403,7 +400,7 @@ __setup("nosmp", nosmp);
 
 static int __init maxcpus(char *str)
 {
-	get_option(&str, &max_cpus);
+	get_option(&str, &parisc_max_cpus);
 	return 1;
 }
 
@@ -499,17 +496,13 @@ void __init smp_callin(void)
 
 	local_irq_enable();  /* Interrupts have been off until now */
 
-	/* Slaves wait here until Big Poppa daddy say "jump" */
-	mb();	/* PARANOID */
-	while (!smp_commenced) ;
-	mb();	/* PARANOID */
-
 	cpu_idle();      /* Wait for timer to schedule some work */
 
 	/* NOTREACHED */
 	panic("smp_callin() AAAAaaaaahhhh....\n");
 }
 
+#if 0
 /*
  * Create the idle task for a new Slave CPU.  DO NOT use kernel_thread()
  * because that could end up calling schedule(). If it did, the new idle
@@ -531,7 +524,7 @@ static struct task_struct *fork_by_hand(void)
 /*
  * Bring one cpu online.
  */
-static int __init smp_boot_one_cpu(int cpuid, int cpunum)
+int __init smp_boot_one_cpu(int cpuid, int cpunum)
 {
 	struct task_struct *idle;
 	long timeout;
@@ -576,12 +569,11 @@ static int __init smp_boot_one_cpu(int cpuid, int cpunum)
 
 	/* 
 	 * OK, wait a bit for that CPU to finish staggering about. 
-	 * Slave will set a bit when it reaches smp_cpu_init() and then
-	 * wait for smp_commenced to be 1.
-	 * Once we see the bit change, we can move on.
+	 * Slave will set a bit when it reaches smp_cpu_init().
+	 * Once the "monarch CPU" sees the bit change, it can move on.
 	 */
 	for (timeout = 0; timeout < 10000; timeout++) {
-		if(IS_LOGGED_IN(cpunum)) {
+		if(cpu_online(cpunum)) {
 			/* Which implies Slave has started up */
 			cpu_now_booting = 0;
 			smp_init_current_idle_task = NULL;
@@ -608,120 +600,56 @@ static int __init smp_boot_one_cpu(int cpuid, int cpunum)
 #endif
 	return 0;
 }
+#endif
 
 
-
-
-/*
-** inventory.c:do_inventory() has already 'discovered' the additional CPU's.
-** We are ready to wrest them from PDC's control now.
-** Called by smp_init bring all the secondaries online and hold them.  
-**
-** o Setup of the IPI irq handler is done in irq.c.
-** o MEM_RENDEZ is initialzed in head.S:stext()
-**
-*/
-void __init smp_boot_cpus(void)
+void __devinit smp_prepare_boot_cpu(void)
 {
-	int i, cpu_count = 1;
-	unsigned long bogosum = cpu_data[0].loops_per_jiffy; /* Count Monarch */
-
-	/* REVISIT - assumes first CPU reported by PAT PDC is BSP */
 	int bootstrap_processor=cpu_data[0].cpuid;	/* CPU ID of BSP */
 
+#ifdef ENTRY_SYS_CPUS
+	cpu_data[0].state = STATE_RUNNING;
+#endif
+
 	/* Setup BSP mappings */
 	printk(KERN_DEBUG "SMP: bootstrap CPU ID is %d\n",bootstrap_processor);
 	init_task.thread_info->cpu = bootstrap_processor; 
 	current->thread_info->cpu = bootstrap_processor;
-	/* Mark Boostrap processor as present */
-	cpu_online_map = cpumask_of_cpu(bootstrap_processor);
-	current->active_mm = &init_mm;
 
-#ifdef ENTRY_SYS_CPUS
-	cpu_data[0].state = STATE_RUNNING;
-#endif
-	cpu_present_mask = cpumask_of_cpu(bootstrap_processor);
+	cpu_set(bootstrap_processor, cpu_online_map);
+	cpu_set(bootstrap_processor, cpu_possible_map);
 
-	/* Nothing to do when told not to.  */
-	if (max_cpus == 0) {
-		printk(KERN_INFO "SMP mode deactivated.\n");
-		return;
-	}
-
-	if (max_cpus != -1) 
-		printk(KERN_INFO "Limiting CPUs to %d\n", max_cpus);
+	/* Mark Boostrap processor as present */
+	current->active_mm = &init_mm;
 
-	/* We found more than one CPU.... */
-	if (boot_cpu_data.cpu_count > 1) {
+	cache_decay_ticks = HZ/100;	/* FIXME very rough.  */
+}
 
-		for (i = 0; i < NR_CPUS; i++) {
-			if (cpu_data[i].cpuid == NO_PROC_ID || 
-			    cpu_data[i].cpuid == bootstrap_processor)
-				continue;
 
-			if (smp_boot_one_cpu(cpu_data[i].cpuid, cpu_count) < 0)
-				continue;
 
-			bogosum += cpu_data[i].loops_per_jiffy;
-			cpu_count++; /* Count good CPUs only... */
-			
-			cpu_present_mask |= 1UL << i;
-			
-			/* Bail when we've started as many CPUS as told to */
-			if (cpu_count == max_cpus)
-				break;
-		}
-	}
-	if (cpu_count == 1) {
-		printk(KERN_INFO "SMP: Bootstrap processor only.\n");
-	}
+/*
+** inventory.c:do_inventory() hasn't yet been run and thus we
+** don't 'discover' the additional CPU's until later.
+*/
+void __init smp_prepare_cpus(unsigned int max_cpus)
+{
 
-	/*
-	 * FIXME very rough.
-	 */
-	cache_decay_ticks = HZ/100;
+	if (max_cpus != -1) 
+		printk(KERN_INFO "SMP: Limited to %d CPUs\n", max_cpus);
 
-	printk(KERN_INFO "SMP: Total %d of %d processors activated "
-	       "(%lu.%02lu BogoMIPS noticed) (Present Mask: %lu).\n",
-	       cpu_count, boot_cpu_data.cpu_count, (bogosum + 25) / 5000,
-	       ((bogosum + 25) / 50) % 100, cpu_present_mask);
+	printk(KERN_INFO "SMP: Monarch CPU activated (%lu.%02lu BogoMIPS)\n",
+	       (cpu_data[0].loops_per_jiffy + 25) / 5000,
+	       ((cpu_data[0].loops_per_jiffy + 25) / 50) % 100);
 
-	smp_num_cpus = cpu_count;
-#ifdef PER_CPU_IRQ_REGION
-	ipi_init();
-#endif
 	return;
 }
 
-/* 
- * Called from main.c by Monarch Processor.
- * After this, any CPU can schedule any task.
- */
-void smp_commence(void)
-{
-	smp_commenced = 1;
-	mb();
-	return;
-}
 
-/*
- * XXX FIXME : do nothing
- */
 void smp_cpus_done(unsigned int cpu_max)
 {
-	smp_threads_ready = 1;
-}
-
-void __init smp_prepare_cpus(unsigned int max_cpus)
-{
-	smp_boot_cpus();
+	return;
 }
 
-void __devinit smp_prepare_boot_cpu(void)
-{
-	cpu_set(smp_processor_id(), cpu_online_map);
-	cpu_set(smp_processor_id(), cpu_present_mask);
-}
 
 int __devinit __cpu_up(unsigned int cpu)
 {
@@ -748,7 +676,7 @@ int sys_cpus(int argc, char **argv)
 #ifdef DUMP_MORE_STATE
 		for(i=0; i<NR_CPUS; i++) {
 			int cpus_per_line = 4;
-			if(IS_LOGGED_IN(i)) {
+			if(cpu_online(i)) {
 				if (j++ % cpus_per_line)
 					printk(" %3d",i);
 				else
@@ -763,7 +691,7 @@ int sys_cpus(int argc, char **argv)
 		printk("\nCPUSTATE  TASK CPUNUM CPUID HARDCPU(HPA)\n");
 #ifdef DUMP_MORE_STATE
 		for(i=0;i<NR_CPUS;i++) {
-			if (!IS_LOGGED_IN(i))
+			if (!cpu_online(i))
 				continue;
 			if (cpu_data[i].cpuid != NO_PROC_ID) {
 				switch(cpu_data[i].state) {
@@ -783,7 +711,7 @@ int sys_cpus(int argc, char **argv)
 						printk("%08x?", cpu_data[i].state);
 						break;
 				}
-				if(IS_LOGGED_IN(i)) {
+				if(cpu_online(i)) {
 					printk(" %4d",current_pid(i));
 				}	
 				printk(" %6d",cpu_number_map(i));
@@ -799,7 +727,7 @@ int sys_cpus(int argc, char **argv)
 #ifdef DUMP_MORE_STATE
      		printk("\nCPUSTATE   CPUID\n");
 		for (i=0;i<NR_CPUS;i++) {
-			if (!IS_LOGGED_IN(i))
+			if (!cpu_online(i))
 				continue;
 			if (cpu_data[i].cpuid != NO_PROC_ID) {
 				switch(cpu_data[i].state) {

arch/parisc/kernel/sys_parisc.c

@@ -93,7 +93,7 @@ static unsigned long get_shared_area(struct address_space *mapping,
 		unsigned long addr, unsigned long len, unsigned long pgoff)
 {
 	struct vm_area_struct *vma;
-	int offset = get_offset(mapping);
+	int offset = mapping ? get_offset(mapping) : 0;
 
 	addr = DCACHE_ALIGN(addr - offset) + offset;
 
@@ -117,8 +117,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	if (!addr)
 		addr = TASK_UNMAPPED_BASE;
 
-	if (filp && (flags & MAP_SHARED)) {
+	if (filp) {
 		addr = get_shared_area(filp->f_mapping, addr, len, pgoff);
+	} else if(flags & MAP_SHARED) {
+		addr = get_shared_area(NULL, addr, len, pgoff);
 	} else {
 		addr = get_unshared_area(addr, len);
 	}

arch/parisc/kernel/syscall.S

@@ -155,9 +155,10 @@ linux_gateway_entry:
 	stw     %r21, -56(%r30)                 /* 6th argument */
 #endif
 
+	/* Are we being ptraced? */
 	mfctl	%cr30, %r1
-	LDREG	TI_FLAGS(%r1), %r19
-	bb,<,n	%r19,31-TIF_SYSCALL_TRACE,.Ltracesys
+	LDREG	TASK_PTRACE(%r1), %r1
+	bb,<,n	%r1,31,.Ltracesys
 	
 	/* Note!  We cannot use the syscall table that is mapped
 	nearby since the gateway page is mapped execute-only. */

arch/parisc/kernel/syscall_table.S

@@ -334,3 +334,12 @@
 	ENTRY_SAME(epoll_ctl)		/* 225 */
 	ENTRY_SAME(epoll_wait)
  	ENTRY_SAME(remap_file_pages)
+  ENTRY_SAME(semtimedop)
+  ENTRY_SAME(mq_open)
+  ENTRY_SAME(mq_unlink)   /* 230 */
+  ENTRY_SAME(mq_timedsend)
+  ENTRY_SAME(mq_timedreceive)
+  ENTRY_SAME(mq_notify)
+  ENTRY_SAME(mq_getsetattr)
+  /* Nothing yet */       /* 235 */
+

arch/parisc/kernel/unwind.c

+/*
+ * Kernel unwinding support
+ *
+ * (c) 2002-2004 Randolph Chung <tausq@debian.org>
+ *
+ * Derived partially from the IA64 implementation. The PA-RISC
+ * Runtime Architecture Document is also a useful reference to
+ * understand what is happening here
+ */
+
+/*
+ * J. David Anglin writes:
+ *
+ * "You have to adjust the current sp to that at the begining of the function.
+ * There can be up to two stack additions to allocate the frame in the
+ * prologue.  Similar things happen in the epilogue.  In the presence of
+ * interrupts, you have to be concerned about where you are in the function
+ * and what stack adjustments have taken place."
+ *
+ * For now these cases are not handled, but they should be!
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+
+#include <asm/uaccess.h>
+
+#include <asm/unwind.h>
+
+/* #define DEBUG 1 */
+#ifdef DEBUG
+#define dbg(x...) printk(x)
+#else
+#define dbg(x...)
+#endif
+
+extern const struct unwind_table_entry __start___unwind[];
+extern const struct unwind_table_entry __stop___unwind[];
+
+static spinlock_t unwind_lock;
+/*
+ * the kernel unwind block is not dynamically allocated so that
+ * we can call unwind_init as early in the bootup process as 
+ * possible (before the slab allocator is initialized)
+ */
+static struct unwind_table kernel_unwind_table;
+static struct unwind_table *unwind_tables, *unwind_tables_end;
+
+
+static inline const struct unwind_table_entry *
+find_unwind_entry_in_table(const struct unwind_table *table, unsigned long addr)
+{
+	const struct unwind_table_entry *e = 0;
+	unsigned long lo, hi, mid;
+
+	addr -= table->base_addr;
+
+	for (lo = 0, hi = table->length; lo < hi; )
+	{
+		mid = (lo + hi) / 2;
+		e = &table->table[mid];
+		if (addr < e->region_start)
+			hi = mid;
+		else if (addr > e->region_end)
+			lo = mid + 1;
+		else
+			break;
+	}
+
+	return e;
+}
+
+static inline const struct unwind_table_entry *
+find_unwind_entry(unsigned long addr)
+{
+	struct unwind_table *table = unwind_tables;
+	const struct unwind_table_entry *e = NULL;
+
+	if (addr >= kernel_unwind_table.start && 
+	    addr <= kernel_unwind_table.end)
+		e = find_unwind_entry_in_table(&kernel_unwind_table, addr);
+	else
+		for (; table; table = table->next)
+		{
+			if (addr >= table->start && 
+			    addr <= table->end)
+				e = find_unwind_entry_in_table(table, addr);
+			if (e)
+				break;
+		}
+
+	return e;
+}
+
+static void
+unwind_table_init(struct unwind_table *table, const char *name,
+		  unsigned long base_addr, unsigned long gp,
+		  const void *table_start, const void *table_end)
+{
+	const struct unwind_table_entry *start = table_start;
+	const struct unwind_table_entry *end = table_end - 1;
+
+	table->name = name;
+	table->base_addr = base_addr;
+	table->gp = gp;
+	table->start = base_addr + start->region_start;
+	table->end = base_addr + end->region_end;
+	table->table = (struct unwind_table_entry *)table_start;
+	table->length = end - start;
+	table->next = NULL;
+}
+
+void *
+unwind_table_add(const char *name, unsigned long base_addr, 
+		 unsigned long gp,
+                 const void *start, const void *end)
+{
+	struct unwind_table *table;
+	unsigned long flags;
+
+	table = kmalloc(sizeof(struct unwind_table), GFP_USER);
+	if (table == NULL)
+		return 0;
+	unwind_table_init(table, name, base_addr, gp, start, end);
+	spin_lock_irqsave(&unwind_lock, flags);
+	if (unwind_tables)
+	{
+		unwind_tables_end->next = table;
+		unwind_tables_end = table;
+	}
+	else
+	{
+		unwind_tables = unwind_tables_end = table;
+	}
+	spin_unlock_irqrestore(&unwind_lock, flags);
+
+	return table;
+}
+
+/* Called from setup_arch to import the kernel unwind info */
+static int unwind_init(void)
+{
+	long start, stop;
+	register unsigned long gp __asm__ ("r27");
+
+	start = (long)&__start___unwind[0];
+	stop = (long)&__stop___unwind[0];
+
+	printk("unwind_init: start = 0x%lx, end = 0x%lx, entries = %lu\n", 
+	    start, stop,
+	    (stop - start) / sizeof(struct unwind_table_entry));
+
+	unwind_table_init(&kernel_unwind_table, "kernel", KERNEL_START,
+			  gp, 
+			  &__start___unwind[0], &__stop___unwind[0]);
+#if 0
+	{
+		int i;
+		for (i = 0; i < 10; i++)
+		{
+			printk("region 0x%x-0x%x\n", 
+				__start___unwind[i].region_start, 
+				__start___unwind[i].region_end);
+		}
+	}
+#endif
+	return 0;
+}
+
+static void unwind_frame_regs(struct unwind_frame_info *info)
+{
+	const struct unwind_table_entry *e;
+	unsigned long npc;
+	unsigned int insn;
+	long frame_size = 0;
+	int looking_for_rp, rpoffset = 0;
+
+	e = find_unwind_entry(info->ip);
+	if (!e) {
+		unsigned long sp;
+		extern char _stext[], _etext[];
+
+		dbg("Cannot find unwind entry for 0x%lx; forced unwinding\n", info->ip);
+
+		/* Since we are doing the unwinding blind, we don't know if
+		   we are adjusting the stack correctly or extracting the rp
+		   correctly. The rp is checked to see if it belongs to the
+		   kernel text section, if not we assume we don't have a 
+		   correct stack frame and we continue to unwind the stack.
+		   This is not quite correct, and will fail for loadable
+		   modules. */
+		sp = info->sp & ~63;
+		do {
+			info->prev_sp = sp - 64;
+
+			/* FIXME: what happens if we unwind too far so that 
+			   sp no longer falls in a mapped kernel page? */
+#ifndef __LP64__
+			info->prev_ip = *(unsigned long *)(info->prev_sp - 20);
+#else
+			info->prev_ip = *(unsigned long *)(info->prev_sp - 16);
+#endif
+
+			sp = info->prev_sp;
+		} while (info->prev_ip < (unsigned long)_stext ||
+			 info->prev_ip > (unsigned long)_etext);
+	} else {
+
+		dbg("e->start = 0x%x, e->end = 0x%x, Save_SP = %d, Save_RP = %d size = %u\n",
+				e->region_start, e->region_end, e->Save_SP, e->Save_RP, e->Total_frame_size);
+
+		looking_for_rp = e->Save_RP;
+
+		for (npc = e->region_start; 
+		     (frame_size < (e->Total_frame_size << 3) || looking_for_rp) && 
+		     npc < info->ip; 
+		     npc += 4) {
+
+			insn = *(unsigned int *)npc;
+
+			if ((insn & 0xffffc000) == 0x37de0000 ||
+			    (insn & 0xffe00000) == 0x6fc00000) {
+				/* ldo X(sp), sp, or stwm X,D(sp) */
+				frame_size += (insn & 0x1 ? -1 << 13 : 0) | 
+					((insn & 0x3fff) >> 1);
+			} else if ((insn & 0xffe00008) == 0x7ec00008) {
+				/* std,ma X,D(sp) */
+				frame_size += (insn & 0x1 ? -1 << 13 : 0) | 
+					(((insn >> 4) & 0x3ff) << 3);
+			} else if (insn == 0x6bc23fd9) { 
+				/* stw rp,-20(sp) */
+				rpoffset = 20;
+				looking_for_rp = 0;
+			} else if (insn == 0x0fc212c1) {
+				/* std rp,-16(sr0,sp) */
+				rpoffset = 16;
+				looking_for_rp = 0;
+			}
+		}
+
+		info->prev_sp = info->sp - frame_size;
+		if (rpoffset)
+			info->prev_ip = *(unsigned long *)(info->prev_sp - rpoffset);
+	}
+}
+
+void unwind_frame_init(struct unwind_frame_info *info, struct task_struct *t, 
+		       struct pt_regs *regs)
+{
+	memset(info, 0, sizeof(struct unwind_frame_info));
+	info->t = t;
+	info->sp = regs->ksp;
+	info->ip = regs->kpc;
+
+	dbg("(%d) Start unwind from sp=%08lx ip=%08lx\n", (int)t->pid, info->sp, info->ip);
+}
+
+void unwind_frame_init_from_blocked_task(struct unwind_frame_info *info, struct task_struct *t)
+{
+	struct pt_regs *regs = &t->thread.regs;
+	unwind_frame_init(info, t, regs);
+}
+
+int unwind_once(struct unwind_frame_info *next_frame)
+{
+	unwind_frame_regs(next_frame);
+
+	if (next_frame->prev_sp == 0 ||
+	    next_frame->prev_ip == 0)
+		return -1;
+
+	next_frame->sp = next_frame->prev_sp;
+	next_frame->ip = next_frame->prev_ip;
+	next_frame->prev_sp = 0;
+	next_frame->prev_ip = 0;
+
+	dbg("(%d) Continue unwind to sp=%08lx ip=%08lx\n", (int)next_frame->t->pid, next_frame->sp, next_frame->ip);
+
+	return 0;
+}
+
+int unwind_to_user(struct unwind_frame_info *info)
+{
+	int ret;
+	
+	do {
+		ret = unwind_once(info);
+	} while (!ret && !(info->ip & 3));
+
+	return ret;
+}
+
+module_init(unwind_init);

arch/parisc/kernel/vmlinux.lds.S

@@ -26,6 +26,7 @@
 #include <asm-generic/vmlinux.lds.h>
 /* needed for the processor specific cache alignment size */	
 #include <asm/cache.h>
+#include <asm/page.h>
 	
 /* ld script to make hppa Linux kernel */
 #ifndef CONFIG_PARISC64
@@ -45,13 +46,17 @@ jiffies = jiffies_64;
 SECTIONS
 {
 
-  . = 0x10100000;
+  . = KERNEL_BINARY_TEXT_START;
 
   _text = .;			/* Text and read-only data */
   .text ALIGN(16) : {
-	*(.text*)
+	*(.text)
 	SCHED_TEXT
-	*(.PARISC.unwind)
+	*(.text.do_softirq)
+	*(.text.sys_exit)
+	*(.text.do_sigaltstack)
+	*(.text.do_fork)
+	*(.text.*)
 	*(.fixup)
 	*(.lock.text)		/* out-of-line lock text */
 	*(.gnu.warning)
@@ -72,6 +77,10 @@ SECTIONS
   __ex_table : { *(__ex_table) }
   __stop___ex_table = .;
 
+  __start___unwind = .;         /* unwind info */
+  .PARISC.unwind : { *(.PARISC.unwind) }
+  __stop___unwind = .;
+ 
   .data : {			/* Data */
 	*(.data)
 	CONSTRUCTORS
@@ -88,6 +97,10 @@ SECTIONS
   . = ALIGN(L1_CACHE_BYTES);
   .data.cacheline_aligned : { *(.data.cacheline_aligned) }
 
+  /* PA-RISC locks requires 16-byte alignment */
+  . = ALIGN(16);
+  .data.lock_aligned : { *(.data.lock_aligned) }
+
   _edata = .;			/* End of data section */
 
   . = ALIGN(16384); 		/* init_task */

arch/parisc/lib/bitops.c

@@ -13,22 +13,20 @@
 #include <asm/atomic.h>
 
 #ifdef CONFIG_SMP
-spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
-	[0 ... (ATOMIC_HASH_SIZE-1)]  = SPIN_LOCK_UNLOCKED
+atomic_lock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned = {
+	[0 ... (ATOMIC_HASH_SIZE-1)]  = (atomic_lock_t) { { 1, 1, 1, 1 } }
 };
 #endif
 
-spinlock_t __atomic_lock = SPIN_LOCK_UNLOCKED;
-
 #ifdef __LP64__
 unsigned long __xchg64(unsigned long x, unsigned long *ptr)
 {
 	unsigned long temp, flags;
 
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
 	temp = *ptr;
 	*ptr = x;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
 	return temp;
 }
 #endif
@@ -38,10 +36,10 @@ unsigned long __xchg32(int x, int *ptr)
 	unsigned long flags;
 	unsigned long temp;
 
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
 	(long) temp = (long) *ptr;	/* XXX - sign extension wanted? */
 	*ptr = x;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
 	return temp;
 }
 
@@ -51,10 +49,10 @@ unsigned long __xchg8(char x, char *ptr)
 	unsigned long flags;
 	unsigned long temp;
 
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
 	(long) temp = (long) *ptr;	/* XXX - sign extension wanted? */
 	*ptr = x;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
 	return temp;
 }
 
@@ -65,10 +63,10 @@ unsigned long __cmpxchg_u64(volatile unsigned long *ptr, unsigned long old, unsi
 	unsigned long flags;
 	unsigned long prev;
 
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
 	if ((prev = *ptr) == old)
 		*ptr = new;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
 	return prev;
 }
 #endif
@@ -78,9 +76,9 @@ unsigned long __cmpxchg_u32(volatile unsigned int *ptr, unsigned int old, unsign
 	unsigned long flags;
 	unsigned int prev;
 
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
 	if ((prev = *ptr) == old)
 		*ptr = new;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
 	return (unsigned long)prev;
 }

arch/parisc/mm/init.c

@@ -424,7 +424,12 @@ void free_initmem(void)
  * a hole of 4kB between each vmalloced area for the same reason.
  */
 
-#define MAP_START 0x4000 /* Leave room for gateway page expansion */
+ /* Leave room for gateway page expansion */
+#if KERNEL_MAP_START < GATEWAY_PAGE_SIZE
+#error KERNEL_MAP_START is in gateway reserved region
+#endif
+#define MAP_START (KERNEL_MAP_START)
+
 #define VM_MAP_OFFSET  (32*1024)
 #define SET_MAP_OFFSET(x) ((void *)(((unsigned long)(x) + VM_MAP_OFFSET) \
 				     & ~(VM_MAP_OFFSET-1)))
@@ -545,7 +550,7 @@ static void __init map_pages(unsigned long start_vaddr, unsigned long start_padd
 		 */
 
 		if (!pmd) {
-			pmd = (pmd_t *) alloc_bootmem_low_pages_node(NODE_DATA(0),PAGE_SIZE);
+			pmd = (pmd_t *) alloc_bootmem_low_pages_node(NODE_DATA(0),PAGE_SIZE << PMD_ORDER);
 			pmd = (pmd_t *) __pa(pmd);
 		}
 

drivers/parisc/superio.c

@@ -63,7 +63,6 @@
 #include <linux/ioport.h>
 #include <linux/serial.h>
 #include <linux/pci.h>
-#include <linux/ioport.h>
 #include <linux/parport.h>
 #include <linux/parport_pc.h>
 #include <linux/termios.h>
@@ -71,6 +70,7 @@
 #include <linux/serial_core.h>
 #include <linux/delay.h>
 #include <linux/ide.h>
+
 #include <asm/io.h>
 #include <asm/hardware.h>
 #include <asm/irq.h>

drivers/parisc/wax.c

@@ -17,7 +17,6 @@
 #include <linux/ioport.h>
 #include <linux/slab.h>
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/types.h>
 
 #include <asm/io.h>

include/asm-parisc/atomic.h

@@ -3,7 +3,6 @@
 
 #include <linux/config.h>
 #include <asm/system.h>
-
 /* Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>.  */
 
 /*
@@ -15,33 +14,47 @@
  */
 
 #ifdef CONFIG_SMP
+#include <asm/cache.h>		/* we use L1_CACHE_BYTES */
+
+typedef spinlock_t atomic_lock_t;
+
 /* Use an array of spinlocks for our atomic_ts.
-** Hash function to index into a different SPINLOCK.
-** Since "a" is usually an address, ">>8" makes one spinlock per 64-bytes.
-*/
+ * Hash function to index into a different SPINLOCK.
+ * Since "a" is usually an address, use one spinlock per cacheline.
+ */
 #  define ATOMIC_HASH_SIZE 4
-#  define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long) a)>>8)&(ATOMIC_HASH_SIZE-1)])
-
-extern spinlock_t __atomic_hash[ATOMIC_HASH_SIZE];
-/* copied from <asm/spinlock.h> and modified */
-#  define SPIN_LOCK(x) \
-	do { while(__ldcw(&(x)->lock) == 0); } while(0)
-	
-#  define SPIN_UNLOCK(x) \
-	do { (x)->lock = 1; } while(0)
+#  define ATOMIC_HASH(a) (&(__atomic_hash[ (((unsigned long) a)/L1_CACHE_BYTES) & (ATOMIC_HASH_SIZE-1) ]))
+
+extern atomic_lock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned;
+
+static inline void atomic_spin_lock(atomic_lock_t *a)
+{
+	while (__ldcw(a) == 0)
+		while (a->lock[0] == 0);
+}
+
+static inline void atomic_spin_unlock(atomic_lock_t *a)
+{
+	a->lock[0] = 1;
+}
+
 #else
 #  define ATOMIC_HASH_SIZE 1
 #  define ATOMIC_HASH(a)	(0)
-
-/* copied from <linux/spinlock.h> and modified */
-#  define SPIN_LOCK(x) (void)(x)
-	
-#  define SPIN_UNLOCK(x) do { } while(0)
+#  define atomic_spin_lock(x) (void)(x)
+#  define atomic_spin_unlock(x) do { } while(0)
 #endif
 
 /* copied from <linux/spinlock.h> and modified */
-#define SPIN_LOCK_IRQSAVE(lock, flags)		do { local_irq_save(flags);       SPIN_LOCK(lock); } while (0)
-#define SPIN_UNLOCK_IRQRESTORE(lock, flags)	do { SPIN_UNLOCK(lock);  local_irq_restore(flags); } while (0)
+#define atomic_spin_lock_irqsave(lock, flags)	do { 	\
+	local_irq_save(flags);				\
+	atomic_spin_lock(lock); 			\
+} while (0)
+
+#define atomic_spin_unlock_irqrestore(lock, flags) do {	\
+	atomic_spin_unlock(lock);			\
+	local_irq_restore(flags);			\
+} while (0)
 
 /* Note that we need not lock read accesses - aligned word writes/reads
  * are atomic, so a reader never sees unconsistent values.
@@ -137,22 +150,22 @@ static __inline__ int __atomic_add_return(int i, atomic_t *v)
 {
 	int ret;
 	unsigned long flags;
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(v), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(v), flags);
 
 	ret = (v->counter += i);
 
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(v), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
 	return ret;
 }
 
 static __inline__ void atomic_set(atomic_t *v, int i) 
 {
 	unsigned long flags;
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(v), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(v), flags);
 
 	v->counter = i;
 
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(v), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
 }
 
 static __inline__ int atomic_read(const atomic_t *v)

include/asm-parisc/bitops.h

@@ -38,9 +38,9 @@ static __inline__ void set_bit(int nr, void * address)
 
 	addr += (nr >> SHIFT_PER_LONG);
 	mask = 1L << CHOP_SHIFTCOUNT(nr);
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(addr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
 	*addr |= mask;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(addr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
 }
 
 static __inline__ void __set_bit(int nr, void * address)
@@ -61,9 +61,9 @@ static __inline__ void clear_bit(int nr, void * address)
 
 	addr += (nr >> SHIFT_PER_LONG);
 	mask = 1L << CHOP_SHIFTCOUNT(nr);
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(addr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
 	*addr &= ~mask;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(addr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
 }
 
 static __inline__ void __clear_bit(unsigned long nr, volatile void * address)
@@ -84,9 +84,9 @@ static __inline__ void change_bit(int nr, void * address)
 
 	addr += (nr >> SHIFT_PER_LONG);
 	mask = 1L << CHOP_SHIFTCOUNT(nr);
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(addr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
 	*addr ^= mask;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(addr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
 }
 
 static __inline__ void __change_bit(int nr, void * address)
@@ -108,10 +108,10 @@ static __inline__ int test_and_set_bit(int nr, void * address)
 
 	addr += (nr >> SHIFT_PER_LONG);
 	mask = 1L << CHOP_SHIFTCOUNT(nr);
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(addr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
 	oldbit = (*addr & mask) ? 1 : 0;
 	*addr |= mask;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(addr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
 
 	return oldbit;
 }
@@ -139,10 +139,10 @@ static __inline__ int test_and_clear_bit(int nr, void * address)
 
 	addr += (nr >> SHIFT_PER_LONG);
 	mask = 1L << CHOP_SHIFTCOUNT(nr);
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(addr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
 	oldbit = (*addr & mask) ? 1 : 0;
 	*addr &= ~mask;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(addr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
 
 	return oldbit;
 }
@@ -170,10 +170,10 @@ static __inline__ int test_and_change_bit(int nr, void * address)
 
 	addr += (nr >> SHIFT_PER_LONG);
 	mask = 1L << CHOP_SHIFTCOUNT(nr);
-	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(addr), flags);
+	atomic_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
 	oldbit = (*addr & mask) ? 1 : 0;
 	*addr ^= mask;
-	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(addr), flags);
+	atomic_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
 
 	return oldbit;
 }
@@ -427,6 +427,17 @@ static __inline__ unsigned long find_next_bit(unsigned long *addr, unsigned long
 	return result + __ffs(tmp);
 }
 
+/**
+ * find_first_bit - find the first set bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum size to search
+ *
+ * Returns the bit-number of the first set bit, not the number of the byte
+ * containing a bit.
+ */
+#define find_first_bit(addr, size) \
+        find_next_bit((addr), (size), 0)
+
 #define _EXT2_HAVE_ASM_BITOPS_
 
 #ifdef __KERNEL__

include/asm-parisc/cache.h

@@ -52,6 +52,8 @@ extern void disable_sr_hashing(void);   /* turns off space register hashing */
 extern void disable_sr_hashing_asm(int); /* low level support for above */
 extern void free_sid(unsigned long);
 unsigned long alloc_sid(void);
+extern void flush_user_dcache_page(unsigned long);
+extern void flush_user_icache_page(unsigned long);
 
 struct seq_file;
 extern void show_cache_info(struct seq_file *m);

include/asm-parisc/cacheflush.h

@@ -82,13 +82,9 @@ static inline void flush_dcache_page(struct page *page)
 
 #define flush_icache_range(s,e)		do { flush_kernel_dcache_range_asm(s,e); flush_kernel_icache_range_asm(s,e); } while (0)
 
-#define flush_icache_user_range(vma, page, addr, len) do { \
-        flush_user_dcache_range(addr, addr + len); \
-	flush_user_icache_range(addr, addr + len); } while (0)
-
 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
 do { memcpy(dst, src, len); \
-     flush_icache_user_range(vma, page, vaddr, len); \
+     flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
 } while (0)
 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
 	memcpy(dst, src, len)
@@ -112,27 +108,85 @@ static inline void flush_cache_range(struct vm_area_struct *vma,
 	}
 }
 
-static inline void
-flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr)
+/* Simple function to work out if we have an existing address translation
+ * for a user space vma. */
+static inline int translation_exists(struct vm_area_struct *vma,
+				     unsigned long addr)
 {
-	int sr3;
+	pgd_t *pgd = pgd_offset(vma->vm_mm, addr);
+	pmd_t *pmd;
+	pte_t *pte;
 
-	if (!vma->vm_mm->context) {
-		BUG();
-		return;
-	}
+	if(pgd_none(*pgd))
+		return 0;
 
-	sr3 = mfsp(3);
-	if (vma->vm_mm->context == sr3) {
-		flush_user_dcache_range(vmaddr,vmaddr + PAGE_SIZE);
+	pmd = pmd_offset(pgd, addr);
+	if(pmd_none(*pmd) || pmd_bad(*pmd))
+		return 0;
+
+	pte = pte_offset_map(pmd, addr);
+
+	/* The PA flush mappings show up as pte_none, but they're
+	 * valid none the less */
+	if(pte_none(*pte) && ((pte_val(*pte) & _PAGE_FLUSH) == 0))
+		return 0;
+	return 1;
+}
+
+
+/* Private function to flush a page from the cache of a non-current
+ * process.  cr25 contains the Page Directory of the current user
+ * process; we're going to hijack both it and the user space %sr3 to
+ * temporarily make the non-current process current.  We have to do
+ * this because cache flushing may cause a non-access tlb miss which
+ * the handlers have to fill in from the pgd of the non-current
+ * process. */
+static inline void
+flush_user_cache_page_non_current(struct vm_area_struct *vma,
+				  unsigned long vmaddr)
+{
+	/* save the current process space and pgd */
+	unsigned long space = mfsp(3), pgd = mfctl(25);
+
+	/* we don't mind taking interrups since they may not
+	 * do anything with user space, but we can't
+	 * be preempted here */
+	preempt_disable();
+
+	/* make us current */
+	mtctl(__pa(vma->vm_mm->pgd), 25);
+	mtsp(vma->vm_mm->context, 3);
+
+	flush_user_dcache_page(vmaddr);
+	if(vma->vm_flags & VM_EXEC)
+		flush_user_icache_page(vmaddr);
+
+	/* put the old current process back */
+	mtsp(space, 3);
+	mtctl(pgd, 25);
+	preempt_enable();
+}
+
+static inline void
+__flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr)
+{
+	if (likely(vma->vm_mm->context == mfsp(3))) {
+		flush_user_dcache_page(vmaddr);
 		if (vma->vm_flags & VM_EXEC)
-			flush_user_icache_range(vmaddr,vmaddr + PAGE_SIZE);
+			flush_user_icache_page(vmaddr);
 	} else {
-		if (vma->vm_flags & VM_EXEC)
-			flush_cache_all();
-		else
-			flush_data_cache();
+		flush_user_cache_page_non_current(vma, vmaddr);
 	}
 }
+
+static inline void
+flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr)
+{
+	BUG_ON(!vma->vm_mm->context);
+
+	if(likely(translation_exists(vma, vmaddr)))
+		__flush_cache_page(vma, vmaddr);
+
+}
 #endif
 

include/asm-parisc/dma-mapping.h

@@ -247,4 +247,7 @@ struct parisc_device;
 void * sba_get_iommu(struct parisc_device *dev);
 #endif
 
+/* At the moment, we panic on error for IOMMU resource exaustion */
+#define dma_mapping_error(x)	0
+
 #endif

include/asm-parisc/fixmap.h

@@ -2,18 +2,22 @@
 #define _ASM_FIXMAP_H
 
 /*
- * Allocate a 8 Mb temporary mapping area for copy_user_page/clear_user_page.
- * This area needs to be aligned on a 8 Mb boundary.
+ * This file defines the locations of the fixed mappings on parisc.
  *
- * FIXME:
+ * All of the values in this file are machine virtual addresses.
  *
- * For PA-RISC, this has no meaning.  It is starting to be used on x86
- * for vsyscalls.  PA will probably do this using space registers.
- */
+ * All of the values in this file must be <4GB (because of assembly
+ * loading restrictions).  If you place this region anywhere above
+ * __PAGE_OFFSET, you must adjust the memory map accordingly */
 
-/* This TMPALIAS_MAP_START reserves some of the memory where the
- * FIXMAP region is on x86.  It's only real use is to constrain
- * VMALLOC_END (see pktable.h) */
-#define TMPALIAS_MAP_START (__PAGE_OFFSET - 0x01000000)
+/* The alias region is used in kernel space to do copy/clear to or
+ * from areas congruently mapped with user space.  It is 8MB large
+ * and must be 16MB aligned */
+#define TMPALIAS_MAP_START	((__PAGE_OFFSET) - 16*1024*1024)
+/* This is the kernel area for all maps (vmalloc, dma etc.)  most
+ * usually, it extends up to TMPALIAS_MAP_START.  Virtual addresses
+ * 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */
+#define KERNEL_MAP_START	(GATEWAY_PAGE_SIZE)
+#define KERNEL_MAP_END		(TMPALIAS_MAP_START)
 
 #endif

include/asm-parisc/hardware.h

@@ -36,7 +36,8 @@ enum cpu_type {
 	pcxu_	= 7, /* pa8200	(u+)	pa 2.0  */
 	pcxw	= 8, /* pa8500		pa 2.0  */
 	pcxw_	= 9, /* pa8600	(w+)	pa 2.0  */
-	pcxw2	= 10 /* pa8700		pa 2.0  */
+	pcxw2	= 10, /* pa8700		pa 2.0  */
+	mako	= 11  /* pa8800		pa 2.0  */
 };
 
 extern char *cpu_name_version[][2]; /* mapping from enum cpu_type to strings */

include/asm-parisc/page.h

@@ -10,6 +10,7 @@
 #include <linux/config.h>
 #ifndef __ASSEMBLY__
 
+#include <asm/types.h>
 #include <asm/cache.h>
 
 #define clear_page(page)	memset((void *)(page), 0, PAGE_SIZE)
@@ -39,12 +40,26 @@ clear_user_page(void *page, unsigned long vaddr, struct page *pg)
 /*
  * These are used to make use of C type-checking..
  */
+#ifdef __LP64__
 typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long pmd; } pmd_t;
-typedef struct { unsigned long pgd; } pgd_t;
+#else
+typedef struct {
+	unsigned long pte;
+	unsigned long flags;
+} pte_t;
+#endif
+/* NOTE: even on 64 bits, these entries are __u32 because we allocate
+ * the pmd and pgd in ZONE_DMA (i.e. under 4GB) */
+typedef struct { __u32 pmd; } pmd_t;
+typedef struct { __u32 pgd; } pgd_t;
 typedef struct { unsigned long pgprot; } pgprot_t;
 
 #define pte_val(x)	((x).pte)
+#ifdef __LP64__
+#define pte_flags(x)	(*(__u32 *)&((x).pte))
+#else
+#define pte_flags(x)	((x).flags)
+#endif
 #define pmd_val(x)	((x).pmd)
 #define pgd_val(x)	((x).pgd)
 #define pgprot_val(x)	((x).pgprot)
@@ -84,14 +99,43 @@ extern int npmem_ranges;
 
 #endif /* !__ASSEMBLY__ */
 
+/* WARNING: The definitions below must match exactly to sizeof(pte_t)
+ * etc
+ */
+#ifdef __LP64__
+#define BITS_PER_PTE_ENTRY	3
+#define BITS_PER_PMD_ENTRY	2
+#define BITS_PER_PGD_ENTRY	2
+#else
+#define BITS_PER_PTE_ENTRY	3
+#define BITS_PER_PMD_ENTRY	2
+#define BITS_PER_PGD_ENTRY	BITS_PER_PMD_ENTRY
+#endif
+#define PGD_ENTRY_SIZE	(1UL << BITS_PER_PGD_ENTRY)
+#define PMD_ENTRY_SIZE	(1UL << BITS_PER_PMD_ENTRY)
+#define PTE_ENTRY_SIZE	(1UL << BITS_PER_PTE_ENTRY)
+
 /* to align the pointer to the (next) page boundary */
 #define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)
 
 
 #define LINUX_GATEWAY_SPACE     0
+
+/* This governs the relationship between virtual and physical addresses.
+ * If you alter it, make sure to take care of our various fixed mapping
+ * segments in fixmap.h */
 #define __PAGE_OFFSET           (0x10000000)
 
 #define PAGE_OFFSET		((unsigned long)__PAGE_OFFSET)
+
+/* The size of the gateway page (we leave lots of room for expansion) */
+#define GATEWAY_PAGE_SIZE	0x4000
+
+/* The start of the actual kernel binary---used in vmlinux.lds.S
+ * Leave some space after __PAGE_OFFSET for detecting kernel null
+ * ptr derefs */
+#define KERNEL_BINARY_TEXT_START	(__PAGE_OFFSET + 0x100000)
+
 /* These macros don't work for 64-bit C code -- don't allow in C at all */
 #ifdef __ASSEMBLY__
 #   define PA(x)	((x)-__PAGE_OFFSET)

include/asm-parisc/pdc.h

@@ -953,6 +953,7 @@ int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
 		struct pdc_memory_table *tbl, unsigned long entries);
 #endif
 
+void set_firmware_width(void);
 int pdc_do_firm_test_reset(unsigned long ftc_bitmap);
 int pdc_do_reset(void);
 int pdc_soft_power_info(unsigned long *power_reg);

include/asm-parisc/pgalloc.h

@@ -10,39 +10,75 @@
 #include <asm/pgtable.h>
 #include <asm/cache.h>
 
+/* Allocate the top level pgd (page directory)
+ *
+ * Here (for 64 bit kernels) we implement a Hybrid L2/L3 scheme: we
+ * allocate the first pmd adjacent to the pgd.  This means that we can
+ * subtract a constant offset to get to it.  The pmd and pgd sizes are
+ * arranged so that a single pmd covers 4GB (giving a full LP64
+ * process access to 8TB) so our lookups are effectively L2 for the
+ * first 4GB of the kernel (i.e. for all ILP32 processes and all the
+ * kernel for machines with under 4GB of memory) */
 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-	pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL);
-	if (likely(pgd != NULL))
-		clear_page(pgd);
-	return pgd;
+	pgd_t *pgd = (pgd_t *)__get_free_pages(GFP_KERNEL|GFP_DMA,
+					       PGD_ALLOC_ORDER);
+	pgd_t *actual_pgd = pgd;
+
+	if (likely(pgd != NULL)) {
+		memset(pgd, 0, PAGE_SIZE<<PGD_ALLOC_ORDER);
+#ifdef __LP64__
+		actual_pgd += PTRS_PER_PGD;
+		/* Populate first pmd with allocated memory.  We mark it
+		 * with _PAGE_GATEWAY as a signal to the system that this
+		 * pmd entry may not be cleared. */
+		pgd_val(*actual_pgd) = (_PAGE_TABLE | _PAGE_GATEWAY) + 
+			(__u32)__pa((unsigned long)pgd);
+		/* The first pmd entry also is marked with _PAGE_GATEWAY as
+		 * a signal that this pmd may not be freed */
+		pgd_val(*pgd) = _PAGE_GATEWAY;
+#endif
+	}
+	return actual_pgd;
 }
 
 static inline void pgd_free(pgd_t *pgd)
 {
-	free_page((unsigned long)pgd);
+#ifdef __LP64__
+	pgd -= PTRS_PER_PGD;
+#endif
+	free_pages((unsigned long)pgd, PGD_ALLOC_ORDER);
 }
 
-#ifdef __LP64__
+#if PT_NLEVELS == 3
 
 /* Three Level Page Table Support for pmd's */
 
 static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
 {
-	pgd_val(*pgd) = _PAGE_TABLE + __pa((unsigned long)pmd);
+	pgd_val(*pgd) = _PAGE_TABLE + (__u32)__pa((unsigned long)pmd);
 }
 
+/* NOTE: pmd must be in ZONE_DMA (<4GB) so the pgd pointer can be
+ * housed in 32 bits */
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 {
-	pmd_t *pmd = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
+	pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT|GFP_DMA,
+					       PMD_ORDER);
 	if (pmd)
-		clear_page(pmd);
+		memset(pmd, 0, PAGE_SIZE<<PMD_ORDER);
 	return pmd;
 }
 
 static inline void pmd_free(pmd_t *pmd)
 {
-	free_page((unsigned long)pmd);
+#ifdef __LP64__
+	if(pmd_val(*pmd) & _PAGE_GATEWAY)
+		/* This is the permanent pmd attached to the pgd;
+		 * cannot free it */
+		return;
+#endif
+	free_pages((unsigned long)pmd, PMD_ORDER);
 }
 
 #else
@@ -63,16 +99,26 @@ static inline void pmd_free(pmd_t *pmd)
 static inline void
 pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
 {
-	pmd_val(*pmd) = _PAGE_TABLE + __pa((unsigned long)pte);
+#ifdef __LP64__
+	/* preserve the gateway marker if this is the beginning of
+	 * the permanent pmd */
+	if(pmd_val(*pmd) & _PAGE_GATEWAY)
+		pmd_val(*pmd) = (_PAGE_TABLE | _PAGE_GATEWAY)
+			+ (__u32)__pa((unsigned long)pte);
+	else
+#endif
+		pmd_val(*pmd) = _PAGE_TABLE + (__u32)__pa((unsigned long)pte);
 }
 
 #define pmd_populate(mm, pmd, pte_page) \
 	pmd_populate_kernel(mm, pmd, page_address(pte_page))
 
+/* NOTE: pte must be in ZONE_DMA (<4GB) so that the pmd pointer
+ * can be housed in 32 bits */
 static inline struct page *
 pte_alloc_one(struct mm_struct *mm, unsigned long address)
 {
-	struct page *page = alloc_page(GFP_KERNEL|__GFP_REPEAT);
+	struct page *page = alloc_page(GFP_KERNEL|__GFP_REPEAT|GFP_DMA);
 	if (likely(page != NULL))
 		clear_page(page_address(page));
 	return page;
@@ -81,7 +127,7 @@ pte_alloc_one(struct mm_struct *mm, unsigned long address)
 static inline pte_t *
 pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
 {
-	pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
+	pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|GFP_DMA);
 	if (likely(pte != NULL))
 		clear_page(pte);
 	return pte;

include/asm-parisc/pgtable.h

@@ -43,9 +43,9 @@
 #define pte_ERROR(e) \
 	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
 #define pmd_ERROR(e) \
-	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
+	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, (unsigned long)pmd_val(e))
 #define pgd_ERROR(e) \
-	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
+	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, (unsigned long)pgd_val(e))
 
  /* Note: If you change ISTACK_SIZE, you need to change the corresponding
   * values in vmlinux.lds and vmlinux64.lds (init_istack section). Also,
@@ -55,49 +55,59 @@
 #define  ISTACK_SIZE  32768 /* Interrupt Stack Size */
 #define  ISTACK_ORDER 3
 
-/*
- * NOTE: Many of the below macros use PT_NLEVELS because
- *       it is convenient that PT_NLEVELS == LOG2(pte size in bytes),
- *       i.e. we use 3 level page tables when we use 8 byte pte's
- *       (for 64 bit) and 2 level page tables when we use 4 byte pte's
- */
+/* This is the size of the initially mapped kernel memory (i.e. currently
+ * 0 to 1<<23 == 8MB */
+#define KERNEL_INITIAL_ORDER	23
+#define KERNEL_INITIAL_SIZE	(1 << KERNEL_INITIAL_ORDER)
 
 #ifdef __LP64__
-#define PT_NLEVELS 3
-#define PT_INITIAL 4 /* Number of initial page tables */
+#define PT_NLEVELS	3
+#define PGD_ORDER	1 /* Number of pages per pgd */
+#define PMD_ORDER	1 /* Number of pages per pmd */
+#define PGD_ALLOC_ORDER	2 /* first pgd contains pmd */
 #else
-#define PT_NLEVELS 2
-#define PT_INITIAL 2 /* Number of initial page tables */
+#define PT_NLEVELS	2
+#define PGD_ORDER	1 /* Number of pages per pgd */
+#define PGD_ALLOC_ORDER	PGD_ORDER
 #endif
 
-#define MAX_ADDRBITS (PAGE_SHIFT + (PT_NLEVELS)*(PAGE_SHIFT - PT_NLEVELS))
-#define MAX_ADDRESS (1UL << MAX_ADDRBITS)
-
-#define SPACEID_SHIFT (MAX_ADDRBITS - 32)
-
-/* Definitions for 1st level */
-
-#define PGDIR_SHIFT  (PAGE_SHIFT + (PT_NLEVELS - 1)*(PAGE_SHIFT - PT_NLEVELS))
-#define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
-#define PGDIR_MASK	(~(PGDIR_SIZE-1))
-#define PTRS_PER_PGD    (1UL << (PAGE_SHIFT - PT_NLEVELS))
-#define USER_PTRS_PER_PGD       PTRS_PER_PGD
+/* Definitions for 3rd level (we use PLD here for Page Lower directory
+ * because PTE_SHIFT is used lower down to mean shift that has to be
+ * done to get usable bits out of the PTE) */
+#define PLD_SHIFT	PAGE_SHIFT
+#define PLD_SIZE	PAGE_SIZE
+#define BITS_PER_PTE	(PAGE_SHIFT - BITS_PER_PTE_ENTRY)
+#define PTRS_PER_PTE    (1UL << BITS_PER_PTE)
 
 /* Definitions for 2nd level */
 #define pgtable_cache_init()	do { } while (0)
 
-#define PMD_SHIFT       (PAGE_SHIFT + (PAGE_SHIFT - PT_NLEVELS))
+#define PMD_SHIFT       (PLD_SHIFT + BITS_PER_PTE)
 #define PMD_SIZE	(1UL << PMD_SHIFT)
 #define PMD_MASK	(~(PMD_SIZE-1))
 #if PT_NLEVELS == 3
-#define PTRS_PER_PMD    (1UL << (PAGE_SHIFT - PT_NLEVELS))
+#define BITS_PER_PMD	(PAGE_SHIFT + PMD_ORDER - BITS_PER_PMD_ENTRY)
 #else
-#define PTRS_PER_PMD    1
+#define BITS_PER_PMD	0
 #endif
+#define PTRS_PER_PMD    (1UL << BITS_PER_PMD)
+
+/* Definitions for 1st level */
+#define PGDIR_SHIFT	(PMD_SHIFT + BITS_PER_PMD)
+#define BITS_PER_PGD	(PAGE_SHIFT + PGD_ORDER - BITS_PER_PGD_ENTRY)
+#define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
+#define PGDIR_MASK	(~(PGDIR_SIZE-1))
+#define PTRS_PER_PGD    (1UL << BITS_PER_PGD)
+#define USER_PTRS_PER_PGD       PTRS_PER_PGD
 
-/* Definitions for 3rd level */
+#define MAX_ADDRBITS	(PGDIR_SHIFT + BITS_PER_PGD)
+#define MAX_ADDRESS	(1UL << MAX_ADDRBITS)
+
+#define SPACEID_SHIFT (MAX_ADDRBITS - 32)
 
-#define PTRS_PER_PTE    (1UL << (PAGE_SHIFT - PT_NLEVELS))
+/* This calculates the number of initial pages we need for the initial
+ * page tables */
+#define PT_INITIAL	(1 << (KERNEL_INITIAL_ORDER - PMD_SHIFT))
 
 /*
  * pgd entries used up by user/kernel:
@@ -110,7 +120,7 @@ extern  void *vmalloc_start;
 #define PCXL_DMA_MAP_SIZE   (8*1024*1024)
 #define VMALLOC_START   ((unsigned long)vmalloc_start)
 /* this is a fixmap remnant, see fixmap.h */
-#define VMALLOC_END	(TMPALIAS_MAP_START)
+#define VMALLOC_END	(KERNEL_MAP_END)
 #endif
 
 /* NB: The tlb miss handlers make certain assumptions about the order */
@@ -217,7 +227,7 @@ extern pgd_t swapper_pg_dir[]; /* declared in init_task.c */
 
 /* initial page tables for 0-8MB for kernel */
 
-extern unsigned long pg0[];
+extern pte_t pg0[];
 
 /* zero page used for uninitialized stuff */
 
@@ -234,22 +244,50 @@ extern unsigned long *empty_zero_page;
 #define pte_present(x)	(pte_val(x) & _PAGE_PRESENT)
 #define pte_clear(xp)	do { pte_val(*(xp)) = 0; } while (0)
 
+#ifdef __LP64__
+/* The first entry of the permanent pmd is not there if it contains
+ * the gateway marker */
+#define pmd_none(x)	(!pmd_val(x) || pmd_val(x) == _PAGE_GATEWAY)
+#define pmd_bad(x)	((pmd_val(x) & ~PAGE_MASK) != _PAGE_TABLE && (pmd_val(x) & ~PAGE_MASK) != (_PAGE_TABLE | _PAGE_GATEWAY))
+#else
 #define pmd_none(x)	(!pmd_val(x))
 #define pmd_bad(x)	((pmd_val(x) & ~PAGE_MASK) != _PAGE_TABLE)
+#endif
 #define pmd_present(x)	(pmd_val(x) & _PAGE_PRESENT)
-#define pmd_clear(xp)	do { pmd_val(*(xp)) = 0; } while (0)
+static inline void pmd_clear(pmd_t *pmd) {
+#ifdef __LP64__
+	if(pmd_val(*pmd) & _PAGE_GATEWAY)
+		/* This is the entry pointing to the permanent pmd
+		 * attached to the pgd; cannot clear it */
+		pmd_val(*pmd) = _PAGE_GATEWAY;
+	else
+#endif
+		pmd_val(*pmd) = 0;
+}
 
 
 
-#ifdef __LP64__
+#if PT_NLEVELS == 3
 #define pgd_page(pgd) ((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))
 
 /* For 64 bit we have three level tables */
 
 #define pgd_none(x)     (!pgd_val(x))
+#ifdef __LP64__
+#define pgd_bad(x)      ((pgd_val(x) & ~PAGE_MASK) != _PAGE_TABLE && (pgd_val(x) & ~PAGE_MASK) != (_PAGE_TABLE | _PAGE_GATEWAY))
+#else
 #define pgd_bad(x)      ((pgd_val(x) & ~PAGE_MASK) != _PAGE_TABLE)
+#endif
 #define pgd_present(x)  (pgd_val(x) & _PAGE_PRESENT)
-#define pgd_clear(xp)   do { pgd_val(*(xp)) = 0; } while (0)
+static inline void pgd_clear(pgd_t *pgd) {
+#ifdef __LP64__
+	if(pgd_val(*pgd) & _PAGE_GATEWAY)
+		/* This is the permanent pmd attached to the pgd; cannot
+		 * free it */
+		return;
+#endif
+	pgd_val(*pgd) = 0;
+}
 #else
 /*
  * The "pgd_xxx()" functions here are trivial for a folded two-level
@@ -337,7 +375,7 @@ extern inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 
 /* Find an entry in the second-level page table.. */
 
-#ifdef __LP64__
+#if PT_NLEVELS == 3
 #define pmd_offset(dir,address) \
 ((pmd_t *) pgd_page(*(dir)) + (((address)>>PMD_SHIFT) & (PTRS_PER_PMD-1)))
 #else

include/asm-parisc/processor.h

@@ -52,11 +52,11 @@
 #ifndef __ASSEMBLY__
 
 /*
-** Data detected about CPUs at boot time which is the same for all CPU's.
-** HP boxes are SMP - ie identical processors.
-**
-** FIXME: some CPU rev info may be processor specific...
-*/
+ * Data detected about CPUs at boot time which is the same for all CPU's.
+ * HP boxes are SMP - ie identical processors.
+ *
+ * FIXME: some CPU rev info may be processor specific...
+ */
 struct system_cpuinfo_parisc {
 	unsigned int	cpu_count;
 	unsigned int	cpu_hz;
@@ -77,9 +77,7 @@ struct system_cpuinfo_parisc {
 };
 
 
-/*
-** Per CPU data structure - ie varies per CPU.
-*/
+/* Per CPU data structure - ie varies per CPU.  */
 struct cpuinfo_parisc {
 	unsigned long it_value;     /* Interval Timer at last timer Intr */
 	unsigned long it_delta;     /* Interval delta (tic_10ms / HZ * 100) */
@@ -116,6 +114,8 @@ typedef struct {
 	int seg;  
 } mm_segment_t;
 
+#define ARCH_MIN_TASKALIGN	8
+
 struct thread_struct {
 	struct pt_regs regs;
 	unsigned long  task_size;
@@ -309,22 +309,31 @@ extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
 
 extern void map_hpux_gateway_page(struct task_struct *tsk, struct mm_struct *mm);
 
-static inline unsigned long get_wchan(struct task_struct *p)
-{
-	return 0xdeadbeef; /* XXX */
-}
+extern unsigned long get_wchan(struct task_struct *p);
 
 #define KSTK_EIP(tsk)	((tsk)->thread.regs.iaoq[0])
 #define KSTK_ESP(tsk)	((tsk)->thread.regs.gr[30])
 
-#ifdef  CONFIG_PA20
+
+/*
+ * PA 2.0 defines data prefetch instructions on page 6-11 of the Kane book.
+ * In addition, many implementations do hardware prefetching of both
+ * instructions and data.
+ *
+ * PA7300LC (page 14-4 of the ERS) also implements prefetching by a load
+ * to gr0 but not in a way that Linux can use.  If the load would cause an
+ * interruption (eg due to prefetching 0), it is suppressed on PA2.0
+ * processors, but not on 7300LC.
+ */
+#ifdef  CONFIG_PREFETCH
 #define ARCH_HAS_PREFETCH
+#define ARCH_HAS_PREFETCHW
+
 extern inline void prefetch(const void *addr)
 {
 	__asm__("ldw 0(%0), %%r0" : : "r" (addr));
 }
 
-#define ARCH_HAS_PREFETCHW
 extern inline void prefetchw(const void *addr)
 {
 	__asm__("ldd 0(%0), %%r0" : : "r" (addr));

include/asm-parisc/smp.h

@@ -52,9 +52,7 @@ extern void smp_send_reschedule(int cpu);
 extern unsigned long cpu_present_mask;
 
 #define smp_processor_id()	(current_thread_info()->cpu)
-#define cpu_online(cpu) cpu_isset(cpu, cpu_online_map)
-
-#define cpu_possible_map	cpu_present_map
+#define cpu_online(cpu)		cpu_isset(cpu, cpu_online_map)
 
 #endif /* CONFIG_SMP */
 

include/asm-parisc/spinlock.h

@@ -4,36 +4,43 @@
 #include <asm/system.h>
 
 /* Note that PA-RISC has to use `1' to mean unlocked and `0' to mean locked
- * since it only has load-and-zero.
+ * since it only has load-and-zero. Moreover, at least on some PA processors,
+ * the semaphore address has to be 16-byte aligned.
  */
 
 #undef SPIN_LOCK_UNLOCKED
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 }
+#define SPIN_LOCK_UNLOCKED (spinlock_t) { { 1, 1, 1, 1 } }
 
-#define spin_lock_init(x)	do { (x)->lock = 1; } while(0)
+#define spin_lock_init(x)	do { *(x) = SPIN_LOCK_UNLOCKED; } while(0)
 
-#define spin_is_locked(x) ((x)->lock == 0)
+static inline int spin_is_locked(spinlock_t *x)
+{
+	volatile unsigned int *a = __ldcw_align(x);
+	return *a == 0;
+}
 
-#define spin_unlock_wait(x)	do { barrier(); } while(((volatile spinlock_t *)(x))->lock == 0)
+#define spin_unlock_wait(x)	do { barrier(); } while(spin_is_locked(x))
 #define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
 
-#if 1
-#define _raw_spin_lock(x) do { \
-	while (__ldcw (&(x)->lock) == 0) \
-		while (((x)->lock) == 0) ; } while (0)
-
-#else
-#define _raw_spin_lock(x) \
-	do { while(__ldcw(&(x)->lock) == 0); } while(0)
-#endif
-	
-#define _raw_spin_unlock(x) \
-	do { (x)->lock = 1; } while(0)
-
-#define _raw_spin_trylock(x) (__ldcw(&(x)->lock) != 0)
-
+static inline void _raw_spin_lock(spinlock_t *x)
+{
+	volatile unsigned int *a = __ldcw_align(x);
+	while (__ldcw(a) == 0)
+		while (*a == 0);
+}
 
+static inline void _raw_spin_unlock(spinlock_t *x)
+{
+	volatile unsigned int *a = __ldcw_align(x);
+	*a = 1;
+}
 
+static inline int _raw_spin_trylock(spinlock_t *x)
+{
+	volatile unsigned int *a = __ldcw_align(x);
+	return __ldcw(a) != 0;
+}
+	
 /*
  * Read-write spinlocks, allowing multiple readers
  * but only one writer.
@@ -43,7 +50,7 @@ typedef struct {
 	volatile int counter;
 } rwlock_t;
 
-#define RW_LOCK_UNLOCKED (rwlock_t) { {1}, 0 }
+#define RW_LOCK_UNLOCKED (rwlock_t) { { { 1, 1, 1, 1 } }, 0 }
 
 #define rwlock_init(lp)	do { *(lp) = RW_LOCK_UNLOCKED; } while (0)
 

include/asm-parisc/system.h

@@ -145,6 +145,19 @@ static inline void set_eiem(unsigned long val)
 	__ret; \
 })
 
+/* Because kmalloc only guarantees 8-byte alignment for kmalloc'd data,
+   and GCC only guarantees 8-byte alignment for stack locals, we can't
+   be assured of 16-byte alignment for atomic lock data even if we
+   specify "__attribute ((aligned(16)))" in the type declaration.  So,
+   we use a struct containing an array of four ints for the atomic lock
+   type and dynamically select the 16-byte aligned int from the array
+   for the semaphore.  */
+#define __PA_LDCW_ALIGNMENT 16
+#define __ldcw_align(a) ({ \
+  unsigned long __ret = (unsigned long) a;                     		\
+  __ret = (__ret + __PA_LDCW_ALIGNMENT - 1) & ~(__PA_LDCW_ALIGNMENT - 1); \
+  (volatile unsigned int *) __ret;                                      \
+})
 
 #ifdef CONFIG_SMP
 /*
@@ -152,8 +165,13 @@ static inline void set_eiem(unsigned long val)
  */
 
 typedef struct {
-	volatile unsigned int __attribute__((aligned(16))) lock;
+	volatile unsigned int lock[4];
 } spinlock_t;
+
+#define __lock_aligned __attribute__((__section__(".data.lock_aligned")))
+
 #endif
 
+#define KERNEL_START (0x10100000 - 0x1000)
+
 #endif

include/asm-parisc/unwind.h

+#ifndef _UNWIND_H_
+#define _UNWIND_H_
+
+/* From ABI specifications */
+struct unwind_table_entry {
+	unsigned int region_start;
+	unsigned int region_end;
+	unsigned int Cannot_unwind:1; /* 0 */
+	unsigned int Millicode:1;	/* 1 */
+	unsigned int Millicode_save_sr0:1;	/* 2 */
+	unsigned int Region_description:2;	/* 3..4 */
+	unsigned int reserved1:1;	/* 5 */
+	unsigned int Entry_SR:1;	/* 6 */
+	unsigned int Entry_FR:4;	/* number saved *//* 7..10 */
+	unsigned int Entry_GR:5;	/* number saved *//* 11..15 */
+	unsigned int Args_stored:1;	/* 16 */
+	unsigned int Variable_Frame:1;	/* 17 */
+	unsigned int Separate_Package_Body:1;	/* 18 */
+	unsigned int Frame_Extension_Millicode:1;	/* 19 */
+	unsigned int Stack_Overflow_Check:1;	/* 20 */
+	unsigned int Two_Instruction_SP_Increment:1;	/* 21 */
+	unsigned int Ada_Region:1;	/* 22 */
+	unsigned int cxx_info:1;	/* 23 */
+	unsigned int cxx_try_catch:1;	/* 24 */
+	unsigned int sched_entry_seq:1;	/* 25 */
+	unsigned int reserved2:1;	/* 26 */
+	unsigned int Save_SP:1;	/* 27 */
+	unsigned int Save_RP:1;	/* 28 */
+	unsigned int Save_MRP_in_frame:1;	/* 29 */
+	unsigned int extn_ptr_defined:1;	/* 30 */
+	unsigned int Cleanup_defined:1;	/* 31 */
+	
+	unsigned int MPE_XL_interrupt_marker:1;	/* 0 */
+	unsigned int HP_UX_interrupt_marker:1;	/* 1 */
+	unsigned int Large_frame:1;	/* 2 */
+	unsigned int Pseudo_SP_Set:1;	/* 3 */
+	unsigned int reserved4:1;	/* 4 */
+	unsigned int Total_frame_size:27;	/* 5..31 */
+};
+
+struct unwind_table {
+	struct unwind_table *next;
+	const char *name;
+	unsigned long gp;
+	unsigned long base_addr;
+	unsigned long start;
+	unsigned long end;
+	const struct unwind_table_entry *table;
+	unsigned long length;
+};
+
+struct unwind_frame_info {
+	unsigned long sp;
+	unsigned long ip;
+	struct task_struct *t;
+	/* Eventually we would like to be able to get at any of the registers
+	   available; but for now we only try to get the sp and ip for each
+	   frame */
+	/* struct pt_regs regs; */
+	unsigned long prev_sp, prev_ip;
+};
+
+void * unwind_table_add(const char *name, unsigned long base_addr, 
+		 unsigned long gp,
+                 const void *start, const void *end);
+void unwind_frame_init(struct unwind_frame_info *info, struct task_struct *t, 
+		       struct pt_regs *regs);
+void unwind_frame_init_from_blocked_task(struct unwind_frame_info *info, struct task_struct *t);
+int unwind_once(struct unwind_frame_info *info);
+int unwind_to_user(struct unwind_frame_info *info);
+
+#endif