Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile/mm/init.c: trivial: use BUG_ON arch/tile: remove useless set_fixmap_nocache() macro arch/tile: add hypervisor-based character driver for SPI flash ROM ioctl-number.txt: add the tile hardwall ioctl range tile: use generic-y format for one-line asm-generic headers clocksource: tile: convert to use clocksource_register_hz
git-mirror · Aug 3, 2011 · 1850536 · 1850536
2 parents ed8f373 + d1afa65
commit 1850536
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Showing 46 changed files with 576 additions and 49 deletions.
diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt
@@ -292,6 +292,7 @@ Code  Seq#(hex)	Include File		Comments
 					<mailto:buk@buks.ipn.de>
 0xA0	all	linux/sdp/sdp.h		Industrial Device Project
 					<mailto:kenji@bitgate.com>
+0xA2	00-0F	arch/tile/include/asm/hardwall.h
 0xA3	80-8F	Port ACL		in development:
 					<mailto:tlewis@mindspring.com>
 0xA3	90-9F	linux/dtlk.h

diff --git a/arch/tile/include/asm/Kbuild b/arch/tile/include/asm/Kbuild
@@ -2,3 +2,41 @@ include include/asm-generic/Kbuild.asm
 
 header-y += ucontext.h
 header-y += hardwall.h
+
+generic-y += bug.h
+generic-y += bugs.h
+generic-y += cputime.h
+generic-y += device.h
+generic-y += div64.h
+generic-y += emergency-restart.h
+generic-y += errno.h
+generic-y += fb.h
+generic-y += fcntl.h
+generic-y += ioctl.h
+generic-y += ioctls.h
+generic-y += ipc.h
+generic-y += ipcbuf.h
+generic-y += irq_regs.h
+generic-y += kdebug.h
+generic-y += local.h
+generic-y += module.h
+generic-y += msgbuf.h
+generic-y += mutex.h
+generic-y += param.h
+generic-y += parport.h
+generic-y += poll.h
+generic-y += posix_types.h
+generic-y += resource.h
+generic-y += scatterlist.h
+generic-y += sembuf.h
+generic-y += serial.h
+generic-y += shmbuf.h
+generic-y += shmparam.h
+generic-y += socket.h
+generic-y += sockios.h
+generic-y += statfs.h
+generic-y += termbits.h
+generic-y += termios.h
+generic-y += types.h
+generic-y += ucontext.h
+generic-y += xor.h
diff --git a/arch/tile/include/asm/bug.h b/arch/tile/include/asm/bug.h
diff --git a/arch/tile/include/asm/bugs.h b/arch/tile/include/asm/bugs.h
diff --git a/arch/tile/include/asm/cputime.h b/arch/tile/include/asm/cputime.h
diff --git a/arch/tile/include/asm/device.h b/arch/tile/include/asm/device.h
diff --git a/arch/tile/include/asm/div64.h b/arch/tile/include/asm/div64.h
diff --git a/arch/tile/include/asm/emergency-restart.h b/arch/tile/include/asm/emergency-restart.h
diff --git a/arch/tile/include/asm/errno.h b/arch/tile/include/asm/errno.h
diff --git a/arch/tile/include/asm/fb.h b/arch/tile/include/asm/fb.h
diff --git a/arch/tile/include/asm/fcntl.h b/arch/tile/include/asm/fcntl.h
diff --git a/arch/tile/include/asm/fixmap.h b/arch/tile/include/asm/fixmap.h
@@ -75,12 +75,6 @@ extern void __set_fixmap(enum fixed_addresses idx,
 
 #define set_fixmap(idx, phys) \
 		__set_fixmap(idx, phys, PAGE_KERNEL)
-/*
- * Some hardware wants to get fixmapped without caching.
- */
-#define set_fixmap_nocache(idx, phys) \
-		__set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
-
 #define clear_fixmap(idx) \
 		__set_fixmap(idx, 0, __pgprot(0))
 

diff --git a/arch/tile/include/asm/ioctl.h b/arch/tile/include/asm/ioctl.h
diff --git a/arch/tile/include/asm/ioctls.h b/arch/tile/include/asm/ioctls.h
diff --git a/arch/tile/include/asm/ipc.h b/arch/tile/include/asm/ipc.h
diff --git a/arch/tile/include/asm/ipcbuf.h b/arch/tile/include/asm/ipcbuf.h
diff --git a/arch/tile/include/asm/irq_regs.h b/arch/tile/include/asm/irq_regs.h
diff --git a/arch/tile/include/asm/kdebug.h b/arch/tile/include/asm/kdebug.h
diff --git a/arch/tile/include/asm/local.h b/arch/tile/include/asm/local.h
diff --git a/arch/tile/include/asm/module.h b/arch/tile/include/asm/module.h
diff --git a/arch/tile/include/asm/msgbuf.h b/arch/tile/include/asm/msgbuf.h
diff --git a/arch/tile/include/asm/mutex.h b/arch/tile/include/asm/mutex.h
diff --git a/arch/tile/include/asm/param.h b/arch/tile/include/asm/param.h
diff --git a/arch/tile/include/asm/parport.h b/arch/tile/include/asm/parport.h
diff --git a/arch/tile/include/asm/poll.h b/arch/tile/include/asm/poll.h
diff --git a/arch/tile/include/asm/posix_types.h b/arch/tile/include/asm/posix_types.h
diff --git a/arch/tile/include/asm/resource.h b/arch/tile/include/asm/resource.h
diff --git a/arch/tile/include/asm/scatterlist.h b/arch/tile/include/asm/scatterlist.h
diff --git a/arch/tile/include/asm/sembuf.h b/arch/tile/include/asm/sembuf.h
diff --git a/arch/tile/include/asm/serial.h b/arch/tile/include/asm/serial.h
diff --git a/arch/tile/include/asm/shmbuf.h b/arch/tile/include/asm/shmbuf.h
diff --git a/arch/tile/include/asm/shmparam.h b/arch/tile/include/asm/shmparam.h
diff --git a/arch/tile/include/asm/socket.h b/arch/tile/include/asm/socket.h
diff --git a/arch/tile/include/asm/sockios.h b/arch/tile/include/asm/sockios.h
diff --git a/arch/tile/include/asm/statfs.h b/arch/tile/include/asm/statfs.h
diff --git a/arch/tile/include/asm/termbits.h b/arch/tile/include/asm/termbits.h
diff --git a/arch/tile/include/asm/termios.h b/arch/tile/include/asm/termios.h
diff --git a/arch/tile/include/asm/types.h b/arch/tile/include/asm/types.h
diff --git a/arch/tile/include/asm/ucontext.h b/arch/tile/include/asm/ucontext.h
diff --git a/arch/tile/include/asm/xor.h b/arch/tile/include/asm/xor.h
diff --git a/arch/tile/include/hv/drv_srom_intf.h b/arch/tile/include/hv/drv_srom_intf.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2011 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/**
+ * @file drv_srom_intf.h
+ * Interface definitions for the SPI Flash ROM driver.
+ */
+
+#ifndef _SYS_HV_INCLUDE_DRV_SROM_INTF_H
+#define _SYS_HV_INCLUDE_DRV_SROM_INTF_H
+
+/** Read this offset to get the total device size. */
+#define SROM_TOTAL_SIZE_OFF   0xF0000000
+
+/** Read this offset to get the device sector size. */
+#define SROM_SECTOR_SIZE_OFF  0xF0000004
+
+/** Read this offset to get the device page size. */
+#define SROM_PAGE_SIZE_OFF    0xF0000008
+
+/** Write this offset to flush any pending writes. */
+#define SROM_FLUSH_OFF        0xF1000000
+
+/** Write this offset, plus the byte offset of the start of a sector, to
+ *  erase a sector.  Any write data is ignored, but there must be at least
+ *  one byte of write data.  Only applies when the driver is in MTD mode.
+ */
+#define SROM_ERASE_OFF        0xF2000000
+
+#endif /* _SYS_HV_INCLUDE_DRV_SROM_INTF_H */
diff --git a/arch/tile/kernel/time.c b/arch/tile/kernel/time.c
@@ -78,7 +78,6 @@ static struct clocksource cycle_counter_cs = {
 	.rating = 300,
 	.read = clocksource_get_cycles,
 	.mask = CLOCKSOURCE_MASK(64),
-	.shift = 22,   /* typical value, e.g. x86 tsc uses this */
 	.flags = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -91,8 +90,6 @@ void __init setup_clock(void)
 	cycles_per_sec = hv_sysconf(HV_SYSCONF_CPU_SPEED);
 	sched_clock_mult =
 		clocksource_hz2mult(cycles_per_sec, SCHED_CLOCK_SHIFT);
-	cycle_counter_cs.mult =
-		clocksource_hz2mult(cycles_per_sec, cycle_counter_cs.shift);
 }
 
 void __init calibrate_delay(void)
@@ -107,7 +104,7 @@ void __init calibrate_delay(void)
 void __init time_init(void)
 {
 	/* Initialize and register the clock source. */
-	clocksource_register(&cycle_counter_cs);
+	clocksource_register_hz(&cycle_counter_cs, cycles_per_sec);
 
 	/* Start up the tile-timer interrupt source on the boot cpu. */
 	setup_tile_timer();

diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
@@ -836,8 +836,7 @@ void __init mem_init(void)
 #endif
 
 #ifdef CONFIG_FLATMEM
-	if (!mem_map)
-		BUG();
+	BUG_ON(!mem_map);
 #endif
 
 #ifdef CONFIG_HIGHMEM

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
@@ -616,5 +616,16 @@ config MSM_SMD_PKT
 	  Enables userspace clients to read and write to some packet SMD
 	  ports via device interface for MSM chipset.
 
+config TILE_SROM
+	bool "Character-device access via hypervisor to the Tilera SPI ROM"
+	depends on TILE
+	default y
+	---help---
+	  This device provides character-level read-write access
+	  to the SROM, typically via the "0", "1", and "2" devices
+	  in /dev/srom/.  The Tilera hypervisor makes the flash
+	  device appear much like a simple EEPROM, and knows
+	  how to partition a single ROM for multiple purposes.
+
 endmenu
 
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
@@ -63,3 +63,5 @@ obj-$(CONFIG_RAMOOPS)		+= ramoops.o
 
 obj-$(CONFIG_JS_RTC)		+= js-rtc.o
 js-rtc-y = rtc.o
+
+obj-$(CONFIG_TILE_SROM)		+= tile-srom.o
Original file line number	Diff line number	Diff line change
Expand Up		@@ -63,3 +63,5 @@ obj-$(CONFIG_RAMOOPS) += ramoops.o

		obj-$(CONFIG_JS_RTC) += js-rtc.o
		js-rtc-y = rtc.o

		obj-$(CONFIG_TILE_SROM) += tile-srom.o