Patchwork [U-Boot,RFC,1/5,Timer] Remove calls to [set, reset]_timer outside arch/

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Submitter Graeme Russ
Date May 29, 2011, 1:44 p.m.
Message ID <1306676654-6276-2-git-send-email-graeme.russ@gmail.com>
Download mbox | patch
Permalink /patch/97836/
State Superseded
Headers show

Comments

Graeme Russ - May 29, 2011, 1:44 p.m.
There is no need to use set_timer() and reset_timer() and there are build
breakages occuring because of them (specifically cfi_flash). Remove any
usage outside arch/ to fix build breakages and to prepare for complete
removal

The Nios2 timer implentation updates every 10ms (increases in 10ms steps)
and required a reset_timer() call before timing operations. For Nios2, call
reset_timer() when get_timer() is called with a parameter value of 0

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>

---
checkpatch complains about long lines and brace usage in the board specific
flash.c files - They are deprecated and not worth fixing for style

NOTE: The Nios2 solution is not correct - a proper solution is currently
under discussion

Changes since V1:
 - Fix typo in commit message
 - Add reset_timer() to Nios2 get_timer(0)
---
 arch/nios2/cpu/interrupts.c    |    4 ++++
 board/BuS/EB+MCF-EV123/flash.c |   10 ++++++----
 board/cobra5272/flash.c        |   10 ++++++----
 board/idmr/flash.c             |   10 ++++++----
 drivers/block/mg_disk.c        |    1 -
 drivers/mtd/cfi_flash.c        |    2 --
 6 files changed, 22 insertions(+), 15 deletions(-)

--
1.7.5.2.317.g391b14

Patch

diff --git a/arch/nios2/cpu/interrupts.c b/arch/nios2/cpu/interrupts.c
index 63acfa9..4e027f1 100644
--- a/arch/nios2/cpu/interrupts.c
+++ b/arch/nios2/cpu/interrupts.c
@@ -95,6 +95,10 @@  void reset_timer (void)
 ulong get_timer (ulong base)
 {
 	WATCHDOG_RESET ();
+
+	if (base == 0)
+		reset_timer();
+
 	return (timestamp - base);
 }

diff --git a/board/BuS/EB+MCF-EV123/flash.c b/board/BuS/EB+MCF-EV123/flash.c
index 3c36367..8b7f957 100644
--- a/board/BuS/EB+MCF-EV123/flash.c
+++ b/board/BuS/EB+MCF-EV123/flash.c
@@ -157,6 +157,7 @@  int amd_flash_erase_sector(flash_info_t * info, int sector)
 {
 	int state;
 	ulong result;
+	ulong start;

 	volatile u16 *addr =
 				(volatile u16 *) (info->start[sector]);
@@ -171,13 +172,13 @@  int amd_flash_erase_sector(flash_info_t * info, int sector)

 	/* wait until flash is ready */
 	state = 0;
-	set_timer (0);
+	start = get_timer(0);

 	do {
 		result = *addr;

 		/* check timeout */
-		if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) {
+		if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 			MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
 			state = ERR_TIMOUT;
 		}
@@ -267,6 +268,7 @@  volatile static int amd_write_word (flash_info_t * info, ulong dest, u16 data)
 	ulong result;
 	int cflag, iflag;
 	int state;
+	ulong start;

 	/*
 	 * Check if Flash is (sufficiently) erased
@@ -295,7 +297,7 @@  volatile static int amd_write_word (flash_info_t * info, ulong dest, u16 data)
 	*addr = data;

 	/* arm simple, non interrupt dependent timer */
-	set_timer (0);
+	start = get_timer(0);

 	/* wait until flash is ready */
 	state = 0;
@@ -303,7 +305,7 @@  volatile static int amd_write_word (flash_info_t * info, ulong dest, u16 data)
 		result = *addr;

 		/* check timeout */
-		if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) {
+		if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 				state = ERR_TIMOUT;
 		}
 		if (!state && ((result & BIT_RDY_MASK) == (data & BIT_RDY_MASK)))
diff --git a/board/cobra5272/flash.c b/board/cobra5272/flash.c
index 33c9361..e8f02eb 100644
--- a/board/cobra5272/flash.c
+++ b/board/cobra5272/flash.c
@@ -147,6 +147,7 @@  int flash_erase (flash_info_t * info, int s_first, int s_last)
 	int iflag, cflag, prot, sect;
 	int rc = ERR_OK;
 	int chip1;
+	ulong start;

 	/* first look for protection bits */

@@ -190,7 +191,7 @@  int flash_erase (flash_info_t * info, int s_first, int s_last)
 		printf ("Erasing sector %2d ... ", sect);

 		/* arm simple, non interrupt dependent timer */
-		set_timer (0);
+		start = get_timer(0);

 		if (info->protect[sect] == 0) {	/* not protected */
 			volatile u16 *addr =
@@ -211,7 +212,7 @@  int flash_erase (flash_info_t * info, int s_first, int s_last)
 				result = *addr;

 				/* check timeout */
-				if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) {
+				if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 					MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
 					chip1 = TMO;
 					break;
@@ -264,6 +265,7 @@  static int write_word (flash_info_t * info, ulong dest, ulong data)
 	int rc = ERR_OK;
 	int cflag, iflag;
 	int chip1;
+	ulong start;

 	/*
 	 * Check if Flash is (sufficiently) erased
@@ -291,7 +293,7 @@  static int write_word (flash_info_t * info, ulong dest, ulong data)
 	*addr = data;

 	/* arm simple, non interrupt dependent timer */
-	set_timer (0);
+	start = get_timer(0);

 	/* wait until flash is ready */
 	chip1 = 0;
@@ -299,7 +301,7 @@  static int write_word (flash_info_t * info, ulong dest, ulong data)
 		result = *addr;

 		/* check timeout */
-		if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) {
+		if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 			chip1 = ERR | TMO;
 			break;
 		}
diff --git a/board/idmr/flash.c b/board/idmr/flash.c
index 57c9948..9f4ff2b 100644
--- a/board/idmr/flash.c
+++ b/board/idmr/flash.c
@@ -130,6 +130,7 @@  int flash_erase (flash_info_t * info, int s_first, int s_last)
 	int iflag, prot, sect;
 	int rc = ERR_OK;
 	int chip1;
+	ulong start;

 	/* first look for protection bits */

@@ -170,7 +171,7 @@  int flash_erase (flash_info_t * info, int s_first, int s_last)
 		printf ("Erasing sector %2d ... ", sect);

 		/* arm simple, non interrupt dependent timer */
-		set_timer (0);
+		start = get_timer(0);

 		if (info->protect[sect] == 0) {	/* not protected */
 			volatile u16 *addr =
@@ -191,7 +192,7 @@  int flash_erase (flash_info_t * info, int s_first, int s_last)
 				result = *addr;

 				/* check timeout */
-				if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT * CONFIG_SYS_HZ / 1000) {
+				if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT * CONFIG_SYS_HZ / 1000) {
 					MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
 					chip1 = TMO;
 					break;
@@ -248,6 +249,7 @@  static int write_word (flash_info_t * info, ulong dest, ulong data)
 	int rc = ERR_OK;
 	int iflag;
 	int chip1;
+	ulong start;

 	/*
 	 * Check if Flash is (sufficiently) erased
@@ -272,7 +274,7 @@  static int write_word (flash_info_t * info, ulong dest, ulong data)
 	*addr = data;

 	/* arm simple, non interrupt dependent timer */
-	set_timer (0);
+	start = get_timer(0);

 	/* wait until flash is ready */
 	chip1 = 0;
@@ -280,7 +282,7 @@  static int write_word (flash_info_t * info, ulong dest, ulong data)
 		result = *addr;

 		/* check timeout */
-		if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT * CONFIG_SYS_HZ / 1000) {
+		if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT * CONFIG_SYS_HZ / 1000) {
 			chip1 = ERR | TMO;
 			break;
 		}
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index b74307a..7609557 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -91,7 +91,6 @@  static unsigned int mg_wait (u32 expect, u32 msec)
 	u32 from, cur, err;

 	err = MG_ERR_NONE;
-	reset_timer();
 	from = get_timer(0);

 	status = readb(mg_base() + MG_REG_STATUS);
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 5788328..ea5e1f2 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -573,7 +573,6 @@  static int flash_status_check (flash_info_t * info, flash_sect_t sector,
 #endif

 	/* Wait for command completion */
-	reset_timer();
 	start = get_timer (0);
 	while (flash_is_busy (info, sector)) {
 		if (get_timer (start) > tout) {
@@ -660,7 +659,6 @@  static int flash_status_poll(flash_info_t *info, void *src, void *dst,
 #endif

 	/* Wait for command completion */
-	reset_timer();
 	start = get_timer(0);
 	while (1) {
 		switch (info->portwidth) {