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-rw-r--r--arch/cris/arch-v10/kernel/debugport.c134
-rw-r--r--arch/cris/arch-v10/kernel/dma.c3
-rw-r--r--arch/cris/arch-v10/kernel/entry.S249
-rw-r--r--arch/cris/arch-v10/kernel/fasttimer.c35
-rw-r--r--arch/cris/arch-v10/kernel/head.S221
-rw-r--r--arch/cris/arch-v10/kernel/io_interface_mux.c515
-rw-r--r--arch/cris/arch-v10/kernel/irq.c7
-rw-r--r--arch/cris/arch-v10/kernel/kgdb.c58
-rw-r--r--arch/cris/arch-v10/kernel/process.c3
-rw-r--r--arch/cris/arch-v10/kernel/ptrace.c1
-rw-r--r--arch/cris/arch-v10/kernel/shadows.c3
-rw-r--r--arch/cris/arch-v10/kernel/traps.c198
12 files changed, 592 insertions, 835 deletions
diff --git a/arch/cris/arch-v10/kernel/debugport.c b/arch/cris/arch-v10/kernel/debugport.c
index 93679a48c79..04d5eee2c90 100644
--- a/arch/cris/arch-v10/kernel/debugport.c
+++ b/arch/cris/arch-v10/kernel/debugport.c
@@ -1,6 +1,6 @@
/* Serialport functions for debugging
*
- * Copyright (c) 2000 Axis Communications AB
+ * Copyright (c) 2000-2007 Axis Communications AB
*
* Authors: Bjorn Wesen
*
@@ -11,96 +11,6 @@
* enableDebugIRQ()
* init_etrax_debug()
*
- * $Log: debugport.c,v $
- * Revision 1.27 2005/06/10 10:34:14 starvik
- * Real console support
- *
- * Revision 1.26 2005/06/07 07:06:07 starvik
- * Added LF->CR translation to make ETRAX customers happy.
- *
- * Revision 1.25 2005/03/08 08:56:47 mikaelam
- * Do only set index as port->index if port is defined, otherwise use the index from the command line
- *
- * Revision 1.24 2005/01/19 10:26:33 mikaelam
- * Return the cris serial driver in console device driver callback function
- *
- * Revision 1.23 2005/01/14 10:12:17 starvik
- * KGDB on separate port.
- * Console fixes from 2.4.
- *
- * Revision 1.22 2005/01/11 16:06:13 starvik
- * typo
- *
- * Revision 1.21 2005/01/11 13:49:14 starvik
- * Added raw_printk to be used where we don't trust the console.
- *
- * Revision 1.20 2004/12/27 11:18:32 starvik
- * Merge of Linux 2.6.10 (not functional yet).
- *
- * Revision 1.19 2004/10/21 07:26:16 starvik
- * Made it possible to specify console settings on kernel command line.
- *
- * Revision 1.18 2004/10/19 13:07:37 starvik
- * Merge of Linux 2.6.9
- *
- * Revision 1.17 2004/09/29 10:33:46 starvik
- * Resolved a dealock when printing debug from kernel.
- *
- * Revision 1.16 2004/08/24 06:12:19 starvik
- * Whitespace cleanup
- *
- * Revision 1.15 2004/08/16 12:37:19 starvik
- * Merge of Linux 2.6.8
- *
- * Revision 1.14 2004/05/17 13:11:29 starvik
- * Disable DMA until real serial driver is up
- *
- * Revision 1.13 2004/05/14 07:58:01 starvik
- * Merge of changes from 2.4
- *
- * Revision 1.12 2003/09/11 07:29:49 starvik
- * Merge of Linux 2.6.0-test5
- *
- * Revision 1.11 2003/07/07 09:53:36 starvik
- * Revert all the 2.5.74 merge changes to make the console work again
- *
- * Revision 1.9 2003/02/17 17:07:23 starvik
- * Solved the problem with corrupted debug output (from Linux 2.4)
- * * Wait until DMA, FIFO and pipe is empty before and after transmissions
- * * Buffer data until a FIFO flush can be triggered.
- *
- * Revision 1.8 2003/01/22 06:48:36 starvik
- * Fixed warnings issued by GCC 3.2.1
- *
- * Revision 1.7 2002/12/12 08:26:32 starvik
- * Don't use C-comments inside CVS comments
- *
- * Revision 1.6 2002/12/11 15:42:02 starvik
- * Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/
- *
- * Revision 1.5 2002/11/20 06:58:03 starvik
- * Compiles with kgdb
- *
- * Revision 1.4 2002/11/19 14:35:24 starvik
- * Changes from linux 2.4
- * Changed struct initializer syntax to the currently preferred notation
- *
- * Revision 1.3 2002/11/06 09:47:03 starvik
- * Modified for new interrupt macros
- *
- * Revision 1.2 2002/01/21 15:21:50 bjornw
- * Update for kdev_t changes
- *
- * Revision 1.6 2001/04/17 13:58:39 orjanf
- * * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
- *
- * Revision 1.5 2001/03/26 14:22:05 bjornw
- * Namechange of some config options
- *
- * Revision 1.4 2000/10/06 12:37:26 bjornw
- * Use physical addresses when talking to DMA
- *
- *
*/
#include <linux/console.h>
@@ -112,6 +22,8 @@
#include <asm/arch/svinto.h>
#include <asm/io.h> /* Get SIMCOUT. */
+extern void reset_watchdog(void);
+
struct dbg_port
{
unsigned int index;
@@ -188,7 +100,9 @@ struct dbg_port ports[]=
}
};
+#ifdef CONFIG_ETRAX_SERIAL
extern struct tty_driver *serial_driver;
+#endif
struct dbg_port* port =
#if defined(CONFIG_ETRAX_DEBUG_PORT0)
@@ -368,11 +282,12 @@ console_write_direct(struct console *co, const char *buf, unsigned int len)
{
int i;
unsigned long flags;
- local_irq_save(flags);
if (!port)
return;
+ local_irq_save(flags);
+
/* Send data */
for (i = 0; i < len; i++) {
/* LF -> CRLF */
@@ -386,26 +301,16 @@ console_write_direct(struct console *co, const char *buf, unsigned int len)
;
*port->write = buf[i];
}
- local_irq_restore(flags);
-}
-int raw_printk(const char *fmt, ...)
-{
- static char buf[1024];
- int printed_len;
- static int first = 1;
- if (first) {
- /* Force reinitialization of the port to get manual mode. */
- port->started = 0;
- start_port(port);
- first = 0;
- }
- va_list args;
- va_start(args, fmt);
- printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
- va_end(args);
- console_write_direct(NULL, buf, strlen(buf));
- return printed_len;
+ /*
+ * Feed the watchdog, otherwise it will reset the chip during boot.
+ * The time to send an ordinary boot message line (10-90 chars)
+ * varies between 1-8ms at 115200. What makes up for the additional
+ * 90ms that allows the watchdog to bite?
+ */
+ reset_watchdog();
+
+ local_irq_restore(flags);
}
static void
@@ -500,6 +405,7 @@ console_setup(struct console *co, char *options)
return 0;
}
+
/* This is a dummy serial device that throws away anything written to it.
* This is used when no debug output is wanted.
*/
@@ -555,7 +461,13 @@ etrax_console_device(struct console* co, int *index)
{
if (port)
*index = port->index;
+ else
+ *index = 0;
+#ifdef CONFIG_ETRAX_SERIAL
return port ? serial_driver : &dummy_driver;
+#else
+ return &dummy_driver;
+#endif
}
static struct console sercons = {
diff --git a/arch/cris/arch-v10/kernel/dma.c b/arch/cris/arch-v10/kernel/dma.c
index e9a0311b141..eb1fa0d2b49 100644
--- a/arch/cris/arch-v10/kernel/dma.c
+++ b/arch/cris/arch-v10/kernel/dma.c
@@ -1,6 +1,5 @@
/* Wrapper for DMA channel allocator that updates DMA client muxing.
- * Copyright 2004, Axis Communications AB
- * $Id: dma.c,v 1.1 2004/12/13 12:21:51 starvik Exp $
+ * Copyright 2004-2007, Axis Communications AB
*/
#include <linux/kernel.h>
diff --git a/arch/cris/arch-v10/kernel/entry.S b/arch/cris/arch-v10/kernel/entry.S
index d1361dc119e..3a65f322ae0 100644
--- a/arch/cris/arch-v10/kernel/entry.S
+++ b/arch/cris/arch-v10/kernel/entry.S
@@ -1,252 +1,9 @@
-/* $Id: entry.S,v 1.28 2005/06/20 05:06:30 starvik Exp $
- *
+/*
* linux/arch/cris/entry.S
*
* Copyright (C) 2000, 2001, 2002 Axis Communications AB
*
* Authors: Bjorn Wesen (bjornw@axis.com)
- *
- * $Log: entry.S,v $
- * Revision 1.28 2005/06/20 05:06:30 starvik
- * Remove unnecessary diff to kernel.org tree
- *
- * Revision 1.27 2005/03/04 08:16:16 starvik
- * Merge of Linux 2.6.11.
- *
- * Revision 1.26 2005/01/11 13:49:47 starvik
- * Added NMI handler.
- *
- * Revision 1.25 2004/12/27 11:18:32 starvik
- * Merge of Linux 2.6.10 (not functional yet).
- *
- * Revision 1.24 2004/12/22 10:41:23 starvik
- * Updates to make v10 compile with the latest SMP aware generic code (even
- * though v10 will never have SMP).
- *
- * Revision 1.23 2004/10/19 13:07:37 starvik
- * Merge of Linux 2.6.9
- *
- * Revision 1.22 2004/06/21 10:29:55 starvik
- * Merge of Linux 2.6.7
- *
- * Revision 1.21 2004/06/09 05:30:27 starvik
- * Clean up multiple interrupt handling.
- * Prevent interrupts from interrupting each other.
- * Handle all active interrupts.
- *
- * Revision 1.20 2004/06/08 08:55:32 starvik
- * Removed unused code
- *
- * Revision 1.19 2004/06/04 11:56:15 starvik
- * Implemented page table lookup for refills in assembler for improved performance.
- *
- * Revision 1.18 2004/05/11 12:28:25 starvik
- * Merge of Linux 2.6.6
- *
- * Revision 1.17 2003/09/11 07:29:49 starvik
- * Merge of Linux 2.6.0-test5
- *
- * Revision 1.16 2003/07/04 08:27:41 starvik
- * Merge of Linux 2.5.74
- *
- * Revision 1.15 2003/04/09 07:32:55 starvik
- * resume should return task_struct, not thread_info
- *
- * Revision 1.14 2003/04/09 05:20:44 starvik
- * Merge of Linux 2.5.67
- *
- * Revision 1.13 2002/12/11 15:42:02 starvik
- * Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/*.c
- *
- * Revision 1.12 2002/12/10 09:00:10 starvik
- * Merge of Linux 2.5.51
- *
- * Revision 1.11 2002/12/05 07:53:10 starvik
- * Corrected constants used with btstq
- *
- * Revision 1.10 2002/11/27 08:45:10 starvik
- * pid is in task_struct, not thread_info
- *
- * Revision 1.9 2002/11/26 09:52:05 starvik
- * Added preemptive kernel scheduling (if CONFIG_PREEMPT)
- *
- * Revision 1.8 2002/11/20 11:56:11 starvik
- * Merge of Linux 2.5.48
- *
- * Revision 1.7 2002/11/18 13:02:42 starvik
- * Added fourth parameter to do_notify_resume
- * Minor cleanup
- *
- * Revision 1.6 2002/11/11 10:37:50 starvik
- * Use new asm-offset defines
- * Modified for new location of current->work etc
- * Removed SYMBOL_NAME from syscalls
- * Added some new syscalls
- *
- * Revision 1.5 2002/11/05 06:45:11 starvik
- * Merge of Linux 2.5.45
- *
- * Revision 1.4 2002/02/05 15:41:31 bjornw
- * Rewritten to conform better to current 2.5 code (similar to arch/i386)
- *
- * Revision 1.3 2002/01/21 15:22:20 bjornw
- * NICE_DOGGY fix from 2.4 arch/cris
- *
- * Revision 1.37 2001/12/07 17:03:55 bjornw
- * Call a c-hook called watchdog_bite_hook instead of show_registers directly
- *
- * Revision 1.36 2001/11/22 13:36:36 bjornw
- * * In ret_from_intr, check regs->dccr for usermode reentrance instead of
- * DCCR explicitly (because the latter might not reflect current reality)
- * * In mmu_bus_fault, set $r9 _after_ calling the C-code instead of before
- * since $r9 is call-clobbered and is potentially needed afterwards
- *
- * Revision 1.35 2001/10/30 17:10:15 bjornw
- * Add some syscalls
- *
- * Revision 1.34 2001/10/01 14:45:03 bjornw
- * Removed underscores and added register prefixes
- *
- * Revision 1.33 2001/08/21 13:48:01 jonashg
- * Added fix by HP to avoid oops when doing a hard_reset_now.
- *
- * Revision 1.32 2001/08/14 04:32:02 hp
- * In _resume, add comment why R9 is saved; don't sound like it's call-saved.
- *
- * Revision 1.31 2001/07/25 16:07:42 bjornw
- * softirq_active/mask -> softirq_pending only
- *
- * Revision 1.30 2001/07/05 01:03:32 hp
- * - include asm/errno.h to get ENOSYS.
- * - Use ENOSYS, not local constant LENOSYS; tweak comments.
- * - Explain why .include, not #include is used.
- * - Make oops-register-dump if watchdog bits and it's not expected.
- * - Don't jsr, use jump _hard_reset_now, and skip spurious nop.
- * - Use correct section attribute for section .rodata.
- * - Adjust sys_ni_syscall fill number.
- *
- * Revision 1.29 2001/06/25 14:07:00 hp
- * Fix review comment.
- * * head.S: Use IO_STATE, IO_FIELD and IO_MASK constructs instead of
- * magic numbers. Add comment that -traditional must not be used.
- * * entry.S (SYMBOL_NAME): Change redefinition to use ## concatenation.
- * Correct and update comment.
- * * Makefile (.S.o): Don't use -traditional. Add comment why the
- * toplevel rule can't be used (now that there's a reason).
- *
- * Revision 1.28 2001/06/21 02:00:40 hp
- * * entry.S: Include asm/unistd.h.
- * (_sys_call_table): Use section .rodata, not .data.
- * (_kernel_thread): Move from...
- * * process.c: ... here.
- * * entryoffsets.c (VAL): Break out from...
- * (OF): Use VAL.
- * (LCLONE_VM): New asmified value from CLONE_VM.
- *
- * Revision 1.27 2001/05/29 11:25:27 markusl
- * In case of "spurious_interrupt", do hard_reset instead of hanging system in a loop...
- *
- * Revision 1.26 2001/05/15 15:46:03 bjornw
- * Include config.h now that we use some CONFIG_ options
- *
- * Revision 1.25 2001/05/15 05:38:47 hp
- * Tweaked code in _ret_from_sys_call
- *
- * Revision 1.24 2001/05/15 05:27:49 hp
- * Save r9 in r1 over function call rather than on stack.
- *
- * Revision 1.23 2001/05/15 05:10:00 hp
- * Generate entry.S structure offsets from C
- *
- * Revision 1.22 2001/04/17 13:58:39 orjanf
- * * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
- *
- * Revision 1.21 2001/04/17 11:33:29 orjanf
- * Updated according to review:
- * * Included asm/sv_addr_ag.h to get macro for internal register.
- * * Corrected comment regarding system call argument passing.
- * * Removed comment about instruction being in a delay slot.
- * * Added comment about SYMBOL_NAME macro.
- *
- * Revision 1.20 2001/04/12 08:51:07 hp
- * - Add entry for sys_fcntl64. In fact copy last piece from i386 including ...
- * - .rept to fill table to safe state with sys_ni_syscall.
- *
- * Revision 1.19 2001/04/04 09:43:32 orjanf
- * * Moved do_sigtrap from traps.c to entry.S.
- * * LTASK_PID need not be global anymore.
- *
- * Revision 1.18 2001/03/26 09:25:02 markusl
- * Updated after review, should now handle USB interrupts correctly.
- *
- * Revision 1.17 2001/03/21 16:12:55 bjornw
- * * Always make room for the cpu status record in the frame, in order to
- * use the same framelength and layout for both mmu busfaults and normal
- * irqs. No need to check for the explicit CRIS_FRAME_FIXUP type anymore.
- * * Fixed bug with using addq for popping the stack in the epilogue - it
- * destroyed the flag register. Use instructions that don't affect the
- * flag register instead.
- * * Removed write to R_PORT_PA_DATA during spurious_interrupt
- *
- * Revision 1.16 2001/03/20 19:43:02 bjornw
- * * Get rid of esp0 setting
- * * Give a 7th argument to a systemcall - the stackframe
- *
- * Revision 1.15 2001/03/05 13:14:30 bjornw
- * Spelling fix
- *
- * Revision 1.14 2001/02/23 08:36:36 perf
- * New ABI; syscallnr=r9, arg5=mof, arg6=srp.
- * Corrected tracesys call check.
- *
- * Revision 1.13 2001/02/15 08:40:55 perf
- * H-P by way of perf;
- * - (_system_call): Don't read system call function address into r1.
- * - (RBFExit): There is no such thing as a null pop. Adjust sp by addq.
- * - (_system_call): Don't use r10 and don't save and restore it.
- * - (THREAD_ESP0): New constant.
- * - (_system_call): Inline set_esp0.
- *
- * Revision 1.12 2001/01/31 17:56:25 orjanf
- * Added definition of LTASK_PID and made it global.
- *
- * Revision 1.11 2001/01/10 21:13:29 bjornw
- * SYMBOL_NAME is defined incorrectly for the compiler options we currently use
- *
- * Revision 1.10 2000/12/18 23:47:56 bjornw
- * * Added syscall trace support (ptrace), completely untested of course
- * * Removed redundant check for NULL entries in syscall_table
- *
- * Revision 1.9 2000/11/21 16:40:51 bjornw
- * * New frame type used when an SBFS frame needs to be popped without
- * actually restarting the instruction
- * * Enable interrupts in signal_return (they did so in x86, I hope it's a good
- * idea)
- *
- * Revision 1.8 2000/11/17 16:53:35 bjornw
- * Added detection of frame-type in Rexit, so that mmu_bus_fault can
- * use ret_from_intr in the return-path to check for signals (like SEGV)
- * and other foul things that might have occurred during the fault.
- *
- * Revision 1.7 2000/10/06 15:04:28 bjornw
- * Include mof in register savings
- *
- * Revision 1.6 2000/09/12 16:02:44 bjornw
- * Linux-2.4.0-test7 derived updates
- *
- * Revision 1.5 2000/08/17 15:35:15 bjornw
- * 2.4.0-test6 changed local_irq_count and friends API
- *
- * Revision 1.4 2000/08/02 13:59:30 bjornw
- * Removed olduname and uname from the syscall list
- *
- * Revision 1.3 2000/07/31 13:32:58 bjornw
- * * Export ret_from_intr
- * * _resume updated (prev/last tjohejsan)
- * * timer_interrupt obsolete
- * * SIGSEGV detection in mmu_bus_fault temporarily disabled
- *
- *
*/
/*
@@ -1167,9 +924,11 @@ sys_call_table:
.long sys_epoll_pwait
.long sys_utimensat /* 320 */
.long sys_signalfd
- .long sys_ni_syscall
+ .long sys_timerfd_create
.long sys_eventfd
.long sys_fallocate
+ .long sys_timerfd_settime /* 325 */
+ .long sys_timerfd_gettime
/*
* NOTE!! This doesn't have to be exact - we just have
diff --git a/arch/cris/arch-v10/kernel/fasttimer.c b/arch/cris/arch-v10/kernel/fasttimer.c
index c1a3a2100ee..31ff35cff02 100644
--- a/arch/cris/arch-v10/kernel/fasttimer.c
+++ b/arch/cris/arch-v10/kernel/fasttimer.c
@@ -31,15 +31,12 @@
#define DEBUG_LOG_INCLUDED
#define FAST_TIMER_LOG
-//#define FAST_TIMER_TEST
+/* #define FAST_TIMER_TEST */
#define FAST_TIMER_SANITY_CHECKS
#ifdef FAST_TIMER_SANITY_CHECKS
-#define SANITYCHECK(x) x
static int sanity_failed;
-#else
-#define SANITYCHECK(x)
#endif
#define D1(x)
@@ -226,23 +223,19 @@ void start_one_shot_timer(struct fast_timer *t,
do_gettimeofday_fast(&t->tv_set);
tmp = fast_timer_list;
- SANITYCHECK({ /* Check so this is not in the list already... */
- while (tmp != NULL)
- {
- if (tmp == t)
- {
- printk(KERN_WARNING
- "timer name: %s data: 0x%08lX already in list!\n", name, data);
- sanity_failed++;
- goto done;
- }
- else
- {
- tmp = tmp->next;
- }
- }
- tmp = fast_timer_list;
- });
+#ifdef FAST_TIMER_SANITY_CHECKS
+ /* Check so this is not in the list already... */
+ while (tmp != NULL) {
+ if (tmp == t) {
+ printk(KERN_WARNING "timer name: %s data: "
+ "0x%08lX already in list!\n", name, data);
+ sanity_failed++;
+ goto done;
+ } else
+ tmp = tmp->next;
+ }
+ tmp = fast_timer_list;
+#endif
t->delay_us = delay_us;
t->function = function;
diff --git a/arch/cris/arch-v10/kernel/head.S b/arch/cris/arch-v10/kernel/head.S
index d946d8b8d27..96344afc4eb 100644
--- a/arch/cris/arch-v10/kernel/head.S
+++ b/arch/cris/arch-v10/kernel/head.S
@@ -1,186 +1,10 @@
-/* $Id: head.S,v 1.10 2005/06/20 05:12:54 starvik Exp $
- *
+/*
* Head of the kernel - alter with care
*
* Copyright (C) 2000, 2001 Axis Communications AB
*
* Authors: Bjorn Wesen (bjornw@axis.com)
*
- * $Log: head.S,v $
- * Revision 1.10 2005/06/20 05:12:54 starvik
- * Remove unnecessary diff to kernel.org tree
- *
- * Revision 1.9 2004/12/13 12:21:51 starvik
- * Added I/O and DMA allocators from Linux 2.4
- *
- * Revision 1.8 2004/11/22 11:41:14 starvik
- * Kernel command line may be supplied to kernel. Not used by Axis but may
- * be used by customers.
- *
- * Revision 1.7 2004/05/14 07:58:01 starvik
- * Merge of changes from 2.4
- *
- * Revision 1.6 2003/04/28 05:31:46 starvik
- * Added section attributes
- *
- * Revision 1.5 2002/12/11 15:42:02 starvik
- * Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/*.c
- *
- * Revision 1.4 2002/11/07 09:00:44 starvik
- * Names changed for init sections
- * init_task_union -> init_thread_union
- *
- * Revision 1.3 2002/02/05 15:38:23 bjornw
- * Oops.. non-CRAMFS_MAGIC should jump over the copying, not into it...
- *
- * Revision 1.2 2001/12/18 13:35:19 bjornw
- * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
- *
- * Revision 1.43 2001/11/08 15:09:43 starvik
- * Only start MII clock if Ethernet is configured
- *
- * Revision 1.42 2001/11/08 14:37:34 starvik
- * Start MII clock early to make sure that it is running at tranceiver reset
- *
- * Revision 1.41 2001/10/29 14:55:58 pkj
- * Corrected pa$r0 to par0.
- *
- * Revision 1.40 2001/10/03 14:59:57 pkj
- * Added support for resetting the Bluetooth hardware.
- *
- * Revision 1.39 2001/10/01 14:45:03 bjornw
- * Removed underscores and added register prefixes
- *
- * Revision 1.38 2001/09/21 07:14:11 jonashg
- * Made root filesystem (cramfs) use mtdblock driver when booting from flash.
- *
- * Revision 1.37 2001/09/11 13:44:29 orjanf
- * Decouple usage of serial ports for debug and kgdb.
- *
- * Revision 1.36 2001/06/29 12:39:31 pkj
- * Added support for mirroring the first flash to just below the
- * second one, to make them look consecutive to cramfs.
- *
- * Revision 1.35 2001/06/25 14:07:00 hp
- * Fix review comment.
- * * head.S: Use IO_STATE, IO_FIELD and IO_MASK constructs instead of
- * magic numbers. Add comment that -traditional must not be used.
- * * entry.S (SYMBOL_NAME): Change redefinition to use ## concatenation.
- * Correct and update comment.
- * * Makefile (.S.o): Don't use -traditional. Add comment why the
- * toplevel rule can't be used (now that there's a reason).
- *
- * Revision 1.34 2001/05/15 07:08:14 hp
- * Tweak "notice" to reflect that both r8 r9 are used
- *
- * Revision 1.33 2001/05/15 06:40:05 hp
- * Put bulk of code in .text.init, data in .data.init
- *
- * Revision 1.32 2001/05/15 06:18:56 hp
- * Execute review comment: s/bcc/bhs/g; s/bcs/blo/g
- *
- * Revision 1.31 2001/05/15 06:08:40 hp
- * Add sentence about autodetecting the bit31-MMU-bug
- *
- * Revision 1.30 2001/05/15 06:00:05 hp
- * Update comment: LOW_MAP is not forced on xsim anymore.
- *
- * Revision 1.29 2001/04/18 12:51:59 orjanf
- * * Reverted review change regarding the use of bcs/bcc.
- * * Removed non-working LED-clearing code.
- *
- * Revision 1.28 2001/04/17 13:58:39 orjanf
- * * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
- *
- * Revision 1.27 2001/04/17 11:42:35 orjanf
- * Changed according to review:
- * * Added comment explaining memory map bug.
- * * Changed bcs and bcc to blo and bhs, respectively.
- * * Removed mentioning of Stallone and Olga boards.
- *
- * Revision 1.26 2001/04/06 12:31:07 jonashg
- * Check for cramfs in flash before RAM instead of RAM before flash.
- *
- * Revision 1.25 2001/04/04 06:23:53 starvik
- * Initialize DRAM if not already initialized
- *
- * Revision 1.24 2001/04/03 11:12:00 starvik
- * Removed dram init (done by rescue or etrax100boot
- * Corrected include
- *
- * Revision 1.23 2001/04/03 09:53:03 starvik
- * Include hw_settings.S
- *
- * Revision 1.22 2001/03/26 14:23:26 bjornw
- * Namechange of some config options
- *
- * Revision 1.21 2001/03/08 12:14:41 bjornw
- * * Config name for ETRAX IDE was renamed
- * * Removed G27 auto-setting when JULIETTE is chosen (need to make this
- * a new config option later)
- *
- * Revision 1.20 2001/02/23 12:47:56 bjornw
- * MMU regs during LOW_MAP updated to reflect a newer reality
- *
- * Revision 1.19 2001/02/19 11:12:07 bjornw
- * Changed comment header format
- *
- * Revision 1.18 2001/02/15 07:25:38 starvik
- * Added support for synchronous serial ports
- *
- * Revision 1.17 2001/02/08 15:53:13 starvik
- * Last commit removed some important ifdefs
- *
- * Revision 1.16 2001/02/08 15:20:38 starvik
- * Include dram_init.S as inline
- *
- * Revision 1.15 2001/01/29 18:12:01 bjornw
- * Corrected some comments
- *
- * Revision 1.14 2001/01/29 13:11:29 starvik
- * Include dram_init.S (with DRAM/SDRAM initialization)
- *
- * Revision 1.13 2001/01/23 14:54:57 markusl
- * Updated for USB
- * i.e. added r_gen_config settings
- *
- * Revision 1.12 2001/01/19 16:16:29 perf
- * Added temporary mapping of 0x0c->0x0c to avoid flash loading confusion.
- * Renamed serial options from ETRAX100 to ETRAX.
- *
- * Revision 1.11 2001/01/16 16:31:38 bjornw
- * * Changed name and semantics of running_from_flash to romfs_in_flash,
- * set by head.S to indicate to setup.c whether there is a cramfs image
- * after the kernels BSS or not. Should work for all three boot-cases
- * (DRAM with cramfs in DRAM, DRAM with cramfs in flash (compressed boot),
- * and flash with cramfs in flash)
- *
- * Revision 1.10 2001/01/16 14:12:21 bjornw
- * * Check for cramfs start passed in r9 from the decompressor, if all other
- * cramfs options fail (if we boot from DRAM but don't find a cramfs image
- * after the kernel in DRAM, it is probably still in the flash)
- * * Check magic in cramfs detection when booting from flash directly
- *
- * Revision 1.9 2001/01/15 17:17:02 bjornw
- * * Corrected the code that detects the cramfs lengths
- * * Added a comment saying that the above does not work due to other
- * reasons..
- *
- * Revision 1.8 2001/01/15 16:27:51 jonashg
- * Made boot after flashing work.
- * * end destination is __vmlinux_end in RAM.
- * * _romfs_start moved because of virtual memory.
- *
- * Revision 1.7 2000/11/21 13:55:29 bjornw
- * Use CONFIG_CRIS_LOW_MAP for the low VM map instead of explicit CPU type
- *
- * Revision 1.6 2000/10/06 12:36:55 bjornw
- * Forgot swapper_pg_dir when changing memory map..
- *
- * Revision 1.5 2000/10/04 16:49:30 bjornw
- * * Fixed memory mapping in LX
- * * Check for cramfs instead of romfs
- *
*/
#define ASSEMBLER_MACROS_ONLY
@@ -595,11 +419,17 @@ no_command_line:
moveq 0,$r0
+ ;; Select or disable serial port 2
+#ifdef CONFIG_ETRAX_SERIAL_PORT2
+ or.d IO_STATE (R_GEN_CONFIG, ser2, select),$r0
+#else
+ or.d IO_STATE (R_GEN_CONFIG, ser2, disable),$r0
+#endif
+
;; Init interfaces (disable them).
or.d IO_STATE (R_GEN_CONFIG, scsi0, disable) \
| IO_STATE (R_GEN_CONFIG, ata, disable) \
| IO_STATE (R_GEN_CONFIG, par0, disable) \
- | IO_STATE (R_GEN_CONFIG, ser2, disable) \
| IO_STATE (R_GEN_CONFIG, mio, disable) \
| IO_STATE (R_GEN_CONFIG, scsi1, disable) \
| IO_STATE (R_GEN_CONFIG, scsi0w, disable) \
@@ -801,6 +631,41 @@ no_command_line:
| IO_STATE (R_SERIAL1_TR_CTRL, tr_bitnr, tr_8bit),$r0
move.b $r0,[R_SERIAL1_TR_CTRL]
+#ifdef CONFIG_ETRAX_SERIAL_PORT2
+ ;; setup the serial port 2 at 115200 baud for debug purposes
+
+ moveq IO_STATE (R_SERIAL2_XOFF, tx_stop, enable) \
+ | IO_STATE (R_SERIAL2_XOFF, auto_xoff, disable) \
+ | IO_FIELD (R_SERIAL2_XOFF, xoff_char, 0),$r0
+ move.d $r0,[R_SERIAL2_XOFF]
+
+ ; 115.2kbaud for both transmit and receive
+ move.b IO_STATE (R_SERIAL2_BAUD, tr_baud, c115k2Hz) \
+ | IO_STATE (R_SERIAL2_BAUD, rec_baud, c115k2Hz),$r0
+ move.b $r0,[R_SERIAL2_BAUD]
+
+ ; Set up and enable the serial2 receiver.
+ move.b IO_STATE (R_SERIAL2_REC_CTRL, dma_err, stop) \
+ | IO_STATE (R_SERIAL2_REC_CTRL, rec_enable, enable) \
+ | IO_STATE (R_SERIAL2_REC_CTRL, rts_, active) \
+ | IO_STATE (R_SERIAL2_REC_CTRL, sampling, middle) \
+ | IO_STATE (R_SERIAL2_REC_CTRL, rec_stick_par, normal) \
+ | IO_STATE (R_SERIAL2_REC_CTRL, rec_par, even) \
+ | IO_STATE (R_SERIAL2_REC_CTRL, rec_par_en, disable) \
+ | IO_STATE (R_SERIAL2_REC_CTRL, rec_bitnr, rec_8bit),$r0
+ move.b $r0,[R_SERIAL2_REC_CTRL]
+
+ ; Set up and enable the serial2 transmitter.
+ move.b IO_FIELD (R_SERIAL2_TR_CTRL, txd, 0) \
+ | IO_STATE (R_SERIAL2_TR_CTRL, tr_enable, enable) \
+ | IO_STATE (R_SERIAL2_TR_CTRL, auto_cts, disabled) \
+ | IO_STATE (R_SERIAL2_TR_CTRL, stop_bits, one_bit) \
+ | IO_STATE (R_SERIAL2_TR_CTRL, tr_stick_par, normal) \
+ | IO_STATE (R_SERIAL2_TR_CTRL, tr_par, even) \
+ | IO_STATE (R_SERIAL2_TR_CTRL, tr_par_en, disable) \
+ | IO_STATE (R_SERIAL2_TR_CTRL, tr_bitnr, tr_8bit),$r0
+ move.b $r0,[R_SERIAL2_TR_CTRL]
+#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT3
;; setup the serial port 3 at 115200 baud for debug purposes
diff --git a/arch/cris/arch-v10/kernel/io_interface_mux.c b/arch/cris/arch-v10/kernel/io_interface_mux.c
index f3b327d4ed9..add98e0941b 100644
--- a/arch/cris/arch-v10/kernel/io_interface_mux.c
+++ b/arch/cris/arch-v10/kernel/io_interface_mux.c
@@ -1,10 +1,9 @@
/* IO interface mux allocator for ETRAX100LX.
- * Copyright 2004, Axis Communications AB
- * $Id: io_interface_mux.c,v 1.2 2004/12/21 12:08:38 starvik Exp $
+ * Copyright 2004-2007, Axis Communications AB
*/
-/* C.f. ETRAX100LX Designer's Reference 20.9 */
+/* C.f. ETRAX100LX Designer's Reference chapter 19.9 */
#include <linux/kernel.h>
#include <linux/slab.h>
@@ -45,17 +44,39 @@ struct watcher
struct if_group
{
enum io_if_group group;
- unsigned char used;
- enum cris_io_interface owner;
+ /* name - the name of the group 'A' to 'F' */
+ char *name;
+ /* used - a bit mask of all pins in the group in the order listed
+ * in the tables in 19.9.1 to 19.9.6. Note that no
+ * distinction is made between in, out and in/out pins. */
+ unsigned int used;
};
struct interface
{
enum cris_io_interface ioif;
+ /* name - the name of the interface */
+ char *name;
+ /* groups - OR'ed together io_if_group flags describing what pin groups
+ * the interface uses pins in. */
unsigned char groups;
+ /* used - set when the interface is allocated. */
unsigned char used;
char *owner;
+ /* group_a through group_f - bit masks describing what pins in the
+ * pin groups the interface uses. */
+ unsigned int group_a;
+ unsigned int group_b;
+ unsigned int group_c;
+ unsigned int group_d;
+ unsigned int group_e;
+ unsigned int group_f;
+
+ /* gpio_g_in, gpio_g_out, gpio_b - bit masks telling what pins in the
+ * GPIO ports the interface uses. This could be reconstucted using
+ * the group_X masks and a table of what pins the GPIO ports use,
+ * but that would be messy. */
unsigned int gpio_g_in;
unsigned int gpio_g_out;
unsigned char gpio_b;
@@ -64,26 +85,32 @@ struct interface
static struct if_group if_groups[6] = {
{
.group = group_a,
+ .name = "A",
.used = 0,
},
{
.group = group_b,
+ .name = "B",
.used = 0,
},
{
.group = group_c,
+ .name = "C",
.used = 0,
},
{
.group = group_d,
+ .name = "D",
.used = 0,
},
{
.group = group_e,
+ .name = "E",
.used = 0,
},
{
.group = group_f,
+ .name = "F",
.used = 0,
}
};
@@ -94,14 +121,32 @@ static struct interface interfaces[] = {
/* Begin Non-multiplexed interfaces */
{
.ioif = if_eth,
+ .name = "ethernet",
.groups = 0,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0,
.gpio_g_out = 0,
.gpio_b = 0
},
{
.ioif = if_serial_0,
+ .name = "serial_0",
.groups = 0,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0,
.gpio_g_out = 0,
.gpio_b = 0
@@ -109,172 +154,385 @@ static struct interface interfaces[] = {
/* End Non-multiplexed interfaces */
{
.ioif = if_serial_1,
+ .name = "serial_1",
.groups = group_e,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0x0f,
+ .group_f = 0,
+
.gpio_g_in = 0x00000000,
.gpio_g_out = 0x00000000,
.gpio_b = 0x00
},
{
.ioif = if_serial_2,
+ .name = "serial_2",
.groups = group_b,
+
+ .group_a = 0,
+ .group_b = 0x0f,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x000000c0,
.gpio_g_out = 0x000000c0,
.gpio_b = 0x00
},
{
.ioif = if_serial_3,
+ .name = "serial_3",
.groups = group_c,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0x0f,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0xc0000000,
.gpio_g_out = 0xc0000000,
.gpio_b = 0x00
},
{
.ioif = if_sync_serial_1,
- .groups = group_e | group_f, /* if_sync_serial_1 and if_sync_serial_3
- can be used simultaneously */
+ .name = "sync_serial_1",
+ .groups = group_e | group_f,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0x0f,
+ .group_f = 0x10,
+
.gpio_g_in = 0x00000000,
.gpio_g_out = 0x00000000,
.gpio_b = 0x10
},
{
.ioif = if_sync_serial_3,
+ .name = "sync_serial_3",
.groups = group_c | group_f,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0x0f,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0x80,
+
.gpio_g_in = 0xc0000000,
.gpio_g_out = 0xc0000000,
.gpio_b = 0x80
},
{
.ioif = if_shared_ram,
+ .name = "shared_ram",
.groups = group_a,
+
+ .group_a = 0x7f8ff,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x0000ff3e,
.gpio_g_out = 0x0000ff38,
.gpio_b = 0x00
},
{
.ioif = if_shared_ram_w,
+ .name = "shared_ram_w",
.groups = group_a | group_d,
+
+ .group_a = 0x7f8ff,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0xff,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x00ffff3e,
.gpio_g_out = 0x00ffff38,
.gpio_b = 0x00
},
{
.ioif = if_par_0,
+ .name = "par_0",
.groups = group_a,
+
+ .group_a = 0x7fbff,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x0000ff3e,
.gpio_g_out = 0x0000ff3e,
.gpio_b = 0x00
},
{
.ioif = if_par_1,
+ .name = "par_1",
.groups = group_d,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0x7feff,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x3eff0000,
.gpio_g_out = 0x3eff0000,
.gpio_b = 0x00
},
{
.ioif = if_par_w,
+ .name = "par_w",
.groups = group_a | group_d,
+
+ .group_a = 0x7fbff,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0xff,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x00ffff3e,
.gpio_g_out = 0x00ffff3e,
.gpio_b = 0x00
},
{
.ioif = if_scsi8_0,
- .groups = group_a | group_b | group_f, /* if_scsi8_0 and if_scsi8_1
- can be used simultaneously */
+ .name = "scsi8_0",
+ .groups = group_a | group_b | group_f,
+
+ .group_a = 0x7ffff,
+ .group_b = 0x0f,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0x10,
+
.gpio_g_in = 0x0000ffff,
.gpio_g_out = 0x0000ffff,
.gpio_b = 0x10
},
{
.ioif = if_scsi8_1,
- .groups = group_c | group_d | group_f, /* if_scsi8_0 and if_scsi8_1
- can be used simultaneously */
+ .name = "scsi8_1",
+ .groups = group_c | group_d | group_f,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0x0f,
+ .group_d = 0x7ffff,
+ .group_e = 0,
+ .group_f = 0x80,
+
.gpio_g_in = 0xffff0000,
.gpio_g_out = 0xffff0000,
.gpio_b = 0x80
},
{
.ioif = if_scsi_w,
+ .name = "scsi_w",
.groups = group_a | group_b | group_d | group_f,
+
+ .group_a = 0x7ffff,
+ .group_b = 0x0f,
+ .group_c = 0,
+ .group_d = 0x601ff,
+ .group_e = 0,
+ .group_f = 0x90,
+
.gpio_g_in = 0x01ffffff,
.gpio_g_out = 0x07ffffff,
.gpio_b = 0x80
},
{
.ioif = if_ata,
+ .name = "ata",
.groups = group_a | group_b | group_c | group_d,
+
+ .group_a = 0x7ffff,
+ .group_b = 0x0f,
+ .group_c = 0x0f,
+ .group_d = 0x7cfff,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0xf9ffffff,
.gpio_g_out = 0xffffffff,
.gpio_b = 0x80
},
{
.ioif = if_csp,
- .groups = group_f, /* if_csp and if_i2c can be used simultaneously */
+ .name = "csp",
+ .groups = group_f,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0xfc,
+
.gpio_g_in = 0x00000000,
.gpio_g_out = 0x00000000,
.gpio_b = 0xfc
},
{
.ioif = if_i2c,
- .groups = group_f, /* if_csp and if_i2c can be used simultaneously */
+ .name = "i2c",
+ .groups = group_f,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0x03,
+
.gpio_g_in = 0x00000000,
.gpio_g_out = 0x00000000,
.gpio_b = 0x03
},
{
.ioif = if_usb_1,
+ .name = "usb_1",
.groups = group_e | group_f,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0x0f,
+ .group_f = 0x2c,
+
.gpio_g_in = 0x00000000,
.gpio_g_out = 0x00000000,
.gpio_b = 0x2c
},
{
.ioif = if_usb_2,
+ .name = "usb_2",
.groups = group_d,
- .gpio_g_in = 0x0e000000,
- .gpio_g_out = 0x3c000000,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0x33e00,
+ .group_f = 0,
+
+ .gpio_g_in = 0x3e000000,
+ .gpio_g_out = 0x0c000000,
.gpio_b = 0x00
},
/* GPIO pins */
{
.ioif = if_gpio_grp_a,
+ .name = "gpio_a",
.groups = group_a,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x0000ff3f,
.gpio_g_out = 0x0000ff3f,
.gpio_b = 0x00
},
{
.ioif = if_gpio_grp_b,
+ .name = "gpio_b",
.groups = group_b,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x000000c0,
.gpio_g_out = 0x000000c0,
.gpio_b = 0x00
},
{
.ioif = if_gpio_grp_c,
+ .name = "gpio_c",
.groups = group_c,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0xc0000000,
.gpio_g_out = 0xc0000000,
.gpio_b = 0x00
},
{
.ioif = if_gpio_grp_d,
+ .name = "gpio_d",
.groups = group_d,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x3fff0000,
.gpio_g_out = 0x3fff0000,
.gpio_b = 0x00
},
{
.ioif = if_gpio_grp_e,
+ .name = "gpio_e",
.groups = group_e,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x00000000,
.gpio_g_out = 0x00000000,
.gpio_b = 0x00
},
{
.ioif = if_gpio_grp_f,
+ .name = "gpio_f",
.groups = group_f,
+
+ .group_a = 0,
+ .group_b = 0,
+ .group_c = 0,
+ .group_d = 0,
+ .group_e = 0,
+ .group_f = 0,
+
.gpio_g_in = 0x00000000,
.gpio_g_out = 0x00000000,
.gpio_b = 0xff
@@ -284,11 +542,13 @@ static struct interface interfaces[] = {
static struct watcher *watchers = NULL;
+/* The pins that are free to use in the GPIO ports. */
static unsigned int gpio_in_pins = 0xffffffff;
static unsigned int gpio_out_pins = 0xffffffff;
static unsigned char gpio_pb_pins = 0xff;
static unsigned char gpio_pa_pins = 0xff;
+/* Identifiers for the owners of the GPIO pins. */
static enum cris_io_interface gpio_pa_owners[8];
static enum cris_io_interface gpio_pb_owners[8];
static enum cris_io_interface gpio_pg_owners[32];
@@ -338,13 +598,15 @@ int cris_request_io_interface(enum cris_io_interface ioif, const char *device_id
struct if_group *grp;
unsigned char group_set;
unsigned long flags;
+ int res = 0;
(void)cris_io_interface_init();
DBG(printk("cris_request_io_interface(%d, \"%s\")\n", ioif, device_id));
if ((ioif >= if_max_interfaces) || (ioif < 0)) {
- printk(KERN_CRIT "cris_request_io_interface: Bad interface %u submitted for %s\n",
+ printk(KERN_CRIT "cris_request_io_interface: Bad interface "
+ "%u submitted for %s\n",
ioif,
device_id);
return -EINVAL;
@@ -353,59 +615,69 @@ int cris_request_io_interface(enum cris_io_interface ioif, const char *device_id
local_irq_save(flags);
if (interfaces[ioif].used) {
- local_irq_restore(flags);
- printk(KERN_CRIT "cris_io_interface: Cannot allocate interface for %s, in use by %s\n",
+ printk(KERN_CRIT "cris_io_interface: Cannot allocate interface "
+ "%s for %s, in use by %s\n",
+ interfaces[ioif].name,
device_id,
interfaces[ioif].owner);
- return -EBUSY;
+ res = -EBUSY;
+ goto exit;
}
- /* Check that all required groups are free before allocating, */
+ /* Check that all required pins in the used groups are free
+ * before allocating. */
group_set = interfaces[ioif].groups;
while (NULL != (grp = get_group(group_set))) {
- if (grp->used) {
- if (grp->group == group_f) {
- if ((if_sync_serial_1 == ioif) ||
- (if_sync_serial_3 == ioif)) {
- if ((grp->owner != if_sync_serial_1) &&
- (grp->owner != if_sync_serial_3)) {
- local_irq_restore(flags);
- return -EBUSY;
- }
- } else if ((if_scsi8_0 == ioif) ||
- (if_scsi8_1 == ioif)) {
- if ((grp->owner != if_scsi8_0) &&
- (grp->owner != if_scsi8_1)) {
- local_irq_restore(flags);
- return -EBUSY;
- }
- }
- } else {
- local_irq_restore(flags);
- return -EBUSY;
- }
+ unsigned int if_group_use = 0;
+
+ switch (grp->group) {
+ case group_a:
+ if_group_use = interfaces[ioif].group_a;
+ break;
+ case group_b:
+ if_group_use = interfaces[ioif].group_b;
+ break;
+ case group_c:
+ if_group_use = interfaces[ioif].group_c;
+ break;
+ case group_d:
+ if_group_use = interfaces[ioif].group_d;
+ break;
+ case group_e:
+ if_group_use = interfaces[ioif].group_e;
+ break;
+ case group_f:
+ if_group_use = interfaces[ioif].group_f;
+ break;
+ default:
+ BUG_ON(1);
}
+
+ if (if_group_use & grp->used) {
+ printk(KERN_INFO "cris_request_io_interface: group "
+ "%s needed by %s not available\n",
+ grp->name, interfaces[ioif].name);
+ res = -EBUSY;
+ goto exit;
+ }
+
group_set = clear_group_from_set(group_set, grp);
}
/* Are the required GPIO pins available too? */
- if (((interfaces[ioif].gpio_g_in & gpio_in_pins) != interfaces[ioif].gpio_g_in) ||
- ((interfaces[ioif].gpio_g_out & gpio_out_pins) != interfaces[ioif].gpio_g_out) ||
- ((interfaces[ioif].gpio_b & gpio_pb_pins) != interfaces[ioif].gpio_b)) {
- local_irq_restore(flags);
- printk(KERN_CRIT "cris_request_io_interface: Could not get required pins for interface %u\n",
- ioif);
- return -EBUSY;
- }
-
- /* All needed I/O pins and pin groups are free, allocate. */
- group_set = interfaces[ioif].groups;
- while (NULL != (grp = get_group(group_set))) {
- grp->used = 1;
- grp->owner = ioif;
- group_set = clear_group_from_set(group_set, grp);
+ if (((interfaces[ioif].gpio_g_in & gpio_in_pins) !=
+ interfaces[ioif].gpio_g_in) ||
+ ((interfaces[ioif].gpio_g_out & gpio_out_pins) !=
+ interfaces[ioif].gpio_g_out) ||
+ ((interfaces[ioif].gpio_b & gpio_pb_pins) !=
+ interfaces[ioif].gpio_b)) {
+ printk(KERN_CRIT "cris_request_io_interface: Could not get "
+ "required pins for interface %u\n", ioif);
+ res = -EBUSY;
+ goto exit;
}
+ /* Check which registers need to be reconfigured. */
gens = genconfig_shadow;
gens_ii = gen_config_ii_shadow;
@@ -495,9 +767,43 @@ int cris_request_io_interface(enum cris_io_interface ioif, const char *device_id
set_gen_config = 0;
break;
default:
- panic("cris_request_io_interface: Bad interface %u submitted for %s\n",
- ioif,
- device_id);
+ printk(KERN_INFO "cris_request_io_interface: Bad interface "
+ "%u submitted for %s\n",
+ ioif, device_id);
+ res = -EBUSY;
+ goto exit;
+ }
+
+ /* All needed I/O pins and pin groups are free, allocate. */
+ group_set = interfaces[ioif].groups;
+ while (NULL != (grp = get_group(group_set))) {
+ unsigned int if_group_use = 0;
+
+ switch (grp->group) {
+ case group_a:
+ if_group_use = interfaces[ioif].group_a;
+ break;
+ case group_b:
+ if_group_use = interfaces[ioif].group_b;
+ break;
+ case group_c:
+ if_group_use = interfaces[ioif].group_c;
+ break;
+ case group_d:
+ if_group_use = interfaces[ioif].group_d;
+ break;
+ case group_e:
+ if_group_use = interfaces[ioif].group_e;
+ break;
+ case group_f:
+ if_group_use = interfaces[ioif].group_f;
+ break;
+ default:
+ BUG_ON(1);
+ }
+ grp->used |= if_group_use;
+
+ group_set = clear_group_from_set(group_set, grp);
}
interfaces[ioif].used = 1;
@@ -516,25 +822,28 @@ int cris_request_io_interface(enum cris_io_interface ioif, const char *device_id
*R_GEN_CONFIG_II = gen_config_ii_shadow;
}
- DBG(printk("GPIO pins: available before: g_in=0x%08x g_out=0x%08x pb=0x%02x\n",
- gpio_in_pins, gpio_out_pins, gpio_pb_pins));
- DBG(printk("grabbing pins: g_in=0x%08x g_out=0x%08x pb=0x%02x\n",
- interfaces[ioif].gpio_g_in,
- interfaces[ioif].gpio_g_out,
- interfaces[ioif].gpio_b));
+ DBG(printk(KERN_DEBUG "GPIO pins: available before: "
+ "g_in=0x%08x g_out=0x%08x pb=0x%02x\n",
+ gpio_in_pins, gpio_out_pins, gpio_pb_pins));
+ DBG(printk(KERN_DEBUG
+ "grabbing pins: g_in=0x%08x g_out=0x%08x pb=0x%02x\n",
+ interfaces[ioif].gpio_g_in,
+ interfaces[ioif].gpio_g_out,
+ interfaces[ioif].gpio_b));
gpio_in_pins &= ~interfaces[ioif].gpio_g_in;
gpio_out_pins &= ~interfaces[ioif].gpio_g_out;
gpio_pb_pins &= ~interfaces[ioif].gpio_b;
- DBG(printk("GPIO pins: available after: g_in=0x%08x g_out=0x%08x pb=0x%02x\n",
- gpio_in_pins, gpio_out_pins, gpio_pb_pins));
+ DBG(printk(KERN_DEBUG "GPIO pins: available after: "
+ "g_in=0x%08x g_out=0x%08x pb=0x%02x\n",
+ gpio_in_pins, gpio_out_pins, gpio_pb_pins));
+exit:
local_irq_restore(flags);
-
- notify_watchers();
-
- return 0;
+ if (res == 0)
+ notify_watchers();
+ return res;
}
@@ -560,43 +869,35 @@ void cris_free_io_interface(enum cris_io_interface ioif)
}
group_set = interfaces[ioif].groups;
while (NULL != (grp = get_group(group_set))) {
- if (grp->group == group_f) {
- switch (ioif)
- {
- case if_sync_serial_1:
- if ((grp->owner == if_sync_serial_1) &&
- interfaces[if_sync_serial_3].used) {
- grp->owner = if_sync_serial_3;
- } else
- grp->used = 0;
- break;
- case if_sync_serial_3:
- if ((grp->owner == if_sync_serial_3) &&
- interfaces[if_sync_serial_1].used) {
- grp->owner = if_sync_serial_1;
- } else
- grp->used = 0;
- break;
- case if_scsi8_0:
- if ((grp->owner == if_scsi8_0) &&
- interfaces[if_scsi8_1].used) {
- grp->owner = if_scsi8_1;
- } else
- grp->used = 0;
- break;
- case if_scsi8_1:
- if ((grp->owner == if_scsi8_1) &&
- interfaces[if_scsi8_0].used) {
- grp->owner = if_scsi8_0;
- } else
- grp->used = 0;
- break;
- default:
- grp->used = 0;
- }
- } else {
- grp->used = 0;
+ unsigned int if_group_use = 0;
+
+ switch (grp->group) {
+ case group_a:
+ if_group_use = interfaces[ioif].group_a;
+ break;
+ case group_b:
+ if_group_use = interfaces[ioif].group_b;
+ break;
+ case group_c:
+ if_group_use = interfaces[ioif].group_c;
+ break;
+ case group_d:
+ if_group_use = interfaces[ioif].group_d;
+ break;
+ case group_e:
+ if_group_use = interfaces[ioif].group_e;
+ break;
+ case group_f:
+ if_group_use = interfaces[ioif].group_f;
+ break;
+ default:
+ BUG_ON(1);
}
+
+ if ((grp->used & if_group_use) != if_group_use)
+ BUG_ON(1);
+ grp->used = grp->used & ~if_group_use;
+
group_set = clear_group_from_set(group_set, grp);
}
interfaces[ioif].used = 0;
diff --git a/arch/cris/arch-v10/kernel/irq.c b/arch/cris/arch-v10/kernel/irq.c
index e06ab0050d3..65ed803dae6 100644
--- a/arch/cris/arch-v10/kernel/irq.c
+++ b/arch/cris/arch-v10/kernel/irq.c
@@ -1,5 +1,4 @@
-/* $Id: irq.c,v 1.4 2005/01/04 12:22:28 starvik Exp $
- *
+/*
* linux/arch/cris/kernel/irq.c
*
* Copyright (c) 2000-2002 Axis Communications AB
@@ -18,10 +17,6 @@
#include <linux/kernel.h>
#include <linux/init.h>
-/* From kgdb.c. */
-extern void kgdb_init(void);
-extern void breakpoint(void);
-
#define mask_irq(irq_nr) (*R_VECT_MASK_CLR = 1 << (irq_nr));
#define unmask_irq(irq_nr) (*R_VECT_MASK_SET = 1 << (irq_nr));
diff --git a/arch/cris/arch-v10/kernel/kgdb.c b/arch/cris/arch-v10/kernel/kgdb.c
index 77f4b142372..a3ca5515074 100644
--- a/arch/cris/arch-v10/kernel/kgdb.c
+++ b/arch/cris/arch-v10/kernel/kgdb.c
@@ -17,66 +17,8 @@
*! Jun 17 1999 Hendrik Ruijter Added gdb 4.18 support. 'X', 'qC' and 'qL'.
*! Jul 21 1999 Bjorn Wesen eLinux port
*!
-*! $Log: kgdb.c,v $
-*! Revision 1.6 2005/01/14 10:12:17 starvik
-*! KGDB on separate port.
-*! Console fixes from 2.4.
-*!
-*! Revision 1.5 2004/10/07 13:59:08 starvik
-*! Corrected call to set_int_vector
-*!
-*! Revision 1.4 2003/04/09 05:20:44 starvik
-*! Merge of Linux 2.5.67
-*!
-*! Revision 1.3 2003/01/21 19:11:08 starvik
-*! Modified include path for new dir layout
-*!
-*! Revision 1.2 2002/11/19 14:35:24 starvik
-*! Changes from linux 2.4
-*! Changed struct initializer syntax to the currently preferred notation
-*!
-*! Revision 1.1 2001/12/17 13:59:27 bjornw
-*! Initial revision
-*!
-*! Revision 1.6 2001/10/09 13:10:03 matsfg
-*! Added $ on registers and removed some underscores
-*!
-*! Revision 1.5 2001/04/17 13:58:39 orjanf
-*! * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
-*!
-*! Revision 1.4 2001/02/23 13:45:19 bjornw
-*! config.h check
-*!
-*! Revision 1.3 2001/01/31 18:08:23 orjanf
-*! Removed kgdb_handle_breakpoint from being the break 8 handler.
-*!
-*! Revision 1.2 2001/01/12 14:22:25 orjanf
-*! Updated kernel debugging support to work with ETRAX 100LX.
-*!
-*! Revision 1.1 2000/07/10 16:25:21 bjornw
-*! Initial revision
-*!
-*! Revision 1.1.1.1 1999/12/03 14:57:31 bjornw
-*! * Initial version of arch/cris, the latest CRIS architecture with an MMU.
-*! Mostly copied from arch/etrax100 with appropriate renames of files.
-*! The mm/ subdir is copied from arch/i386.
-*! This does not compile yet at all.
-*!
-*!
-*! Revision 1.4 1999/07/22 17:25:25 bjornw
-*! Dont wait for + in putpacket if we havent hit the initial breakpoint yet. Added a kgdb_init function which sets up the break and irq vectors.
-*!
-*! Revision 1.3 1999/07/21 19:51:18 bjornw
-*! Check if the interrupting char is a ctrl-C, ignore otherwise.
-*!
-*! Revision 1.2 1999/07/21 18:09:39 bjornw
-*! Ported to eLinux architecture, and added some kgdb documentation.
-*!
-*!
*!---------------------------------------------------------------------------
*!
-*! $Id: kgdb.c,v 1.6 2005/01/14 10:12:17 starvik Exp $
-*!
*! (C) Copyright 1999, Axis Communications AB, LUND, SWEDEN
*!
*!**************************************************************************/
diff --git a/arch/cris/arch-v10/kernel/process.c b/arch/cris/arch-v10/kernel/process.c
index 1a3760c94f8..53117f07cc1 100644
--- a/arch/cris/arch-v10/kernel/process.c
+++ b/arch/cris/arch-v10/kernel/process.c
@@ -1,5 +1,4 @@
-/* $Id: process.c,v 1.12 2004/12/27 11:18:32 starvik Exp $
- *
+/*
* linux/arch/cris/kernel/process.c
*
* Copyright (C) 1995 Linus Torvalds
diff --git a/arch/cris/arch-v10/kernel/ptrace.c b/arch/cris/arch-v10/kernel/ptrace.c
index b570ae9b6ca..ee505b2eb4d 100644
--- a/arch/cris/arch-v10/kernel/ptrace.c
+++ b/arch/cris/arch-v10/kernel/ptrace.c
@@ -65,6 +65,7 @@ void
ptrace_disable(struct task_struct *child)
{
/* Todo - pending singlesteps? */
+ clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
}
/*
diff --git a/arch/cris/arch-v10/kernel/shadows.c b/arch/cris/arch-v10/kernel/shadows.c
index 326178aef6e..2454a0b02f5 100644
--- a/arch/cris/arch-v10/kernel/shadows.c
+++ b/arch/cris/arch-v10/kernel/shadows.c
@@ -1,5 +1,4 @@
-/* $Id: shadows.c,v 1.2 2004/12/13 12:21:51 starvik Exp $
- *
+/*
* Various shadow registers. Defines for these are in include/asm-etrax100/io.h
*/
diff --git a/arch/cris/arch-v10/kernel/traps.c b/arch/cris/arch-v10/kernel/traps.c
index 4becc1bcced..9eada5d8893 100644
--- a/arch/cris/arch-v10/kernel/traps.c
+++ b/arch/cris/arch-v10/kernel/traps.c
@@ -1,13 +1,10 @@
-/* $Id: traps.c,v 1.4 2005/04/24 18:47:55 starvik Exp $
+/*
+ * Helper functions for trap handlers
*
- * linux/arch/cris/arch-v10/traps.c
+ * Copyright (C) 2000-2007, Axis Communications AB.
*
- * Heler functions for trap handlers
- *
- * Copyright (C) 2000-2002 Axis Communications AB
- *
- * Authors: Bjorn Wesen
- * Hans-Peter Nilsson
+ * Authors: Bjorn Wesen
+ * Hans-Peter Nilsson
*
*/
@@ -15,124 +12,119 @@
#include <asm/uaccess.h>
#include <asm/arch/sv_addr_ag.h>
-extern int raw_printk(const char *fmt, ...);
-
-void
-show_registers(struct pt_regs * regs)
+void
+show_registers(struct pt_regs *regs)
{
- /* We either use rdusp() - the USP register, which might not
- correspond to the current process for all cases we're called,
- or we use the current->thread.usp, which is not up to date for
- the current process. Experience shows we want the USP
- register. */
+ /*
+ * It's possible to use either the USP register or current->thread.usp.
+ * USP might not correspond to the current process for all cases this
+ * function is called, and current->thread.usp isn't up to date for the
+ * current process. Experience shows that using USP is the way to go.
+ */
unsigned long usp = rdusp();
- raw_printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
- regs->irp, regs->srp, regs->dccr, usp, regs->mof );
- raw_printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
+ printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
+ regs->irp, regs->srp, regs->dccr, usp, regs->mof);
+
+ printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
regs->r0, regs->r1, regs->r2, regs->r3);
- raw_printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n",
+
+ printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n",
regs->r4, regs->r5, regs->r6, regs->r7);
- raw_printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n",
+
+ printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n",
regs->r8, regs->r9, regs->r10, regs->r11);
- raw_printk("r12: %08lx r13: %08lx oR10: %08lx sp: %08lx\n",
- regs->r12, regs->r13, regs->orig_r10, regs);
- raw_printk("R_MMU_CAUSE: %08lx\n", (unsigned long)*R_MMU_CAUSE);
- raw_printk("Process %s (pid: %d, stackpage=%08lx)\n",
+
+ printk("r12: %08lx r13: %08lx oR10: %08lx sp: %08lx\n",
+ regs->r12, regs->r13, regs->orig_r10, (long unsigned)regs);
+
+ printk("R_MMU_CAUSE: %08lx\n", (unsigned long)*R_MMU_CAUSE);
+
+ printk("Process %s (pid: %d, stackpage=%08lx)\n",
current->comm, current->pid, (unsigned long)current);
/*
- * When in-kernel, we also print out the stack and code at the
- * time of the fault..
- */
- if (! user_mode(regs)) {
- int i;
+ * When in-kernel, we also print out the stack and code at the
+ * time of the fault..
+ */
+ if (!user_mode(regs)) {
+ int i;
- show_stack(NULL, (unsigned long*)usp);
+ show_stack(NULL, (unsigned long *)usp);
- /* Dump kernel stack if the previous dump wasn't one. */
+ /*
+ * If the previous stack-dump wasn't a kernel one, dump the
+ * kernel stack now.
+ */
if (usp != 0)
- show_stack (NULL, NULL);
-
- raw_printk("\nCode: ");
- if(regs->irp < PAGE_OFFSET)
- goto bad;
-
- /* Often enough the value at regs->irp does not point to
- the interesting instruction, which is most often the
- _previous_ instruction. So we dump at an offset large
- enough that instruction decoding should be in sync at
- the interesting point, but small enough to fit on a row
- (sort of). We point out the regs->irp location in a
- ksymoops-friendly way by wrapping the byte for that
- address in parentheses. */
- for(i = -12; i < 12; i++)
- {
- unsigned char c;
- if(__get_user(c, &((unsigned char*)regs->irp)[i])) {
-bad:
- raw_printk(" Bad IP value.");
- break;
- }
+ show_stack(NULL, NULL);
+
+ printk("\nCode: ");
+
+ if (regs->irp < PAGE_OFFSET)
+ goto bad_value;
+
+ /*
+ * Quite often the value at regs->irp doesn't point to the
+ * interesting instruction, which often is the previous
+ * instruction. So dump at an offset large enough that the
+ * instruction decoding should be in sync at the interesting
+ * point, but small enough to fit on a row. The regs->irp
+ * location is pointed out in a ksymoops-friendly way by
+ * wrapping the byte for that address in parenthesises.
+ */
+ for (i = -12; i < 12; i++) {
+ unsigned char c;
+
+ if (__get_user(c, &((unsigned char *)regs->irp)[i])) {
+bad_value:
+ printk(" Bad IP value.");
+ break;
+ }
if (i == 0)
- raw_printk("(%02x) ", c);
+ printk("(%02x) ", c);
else
- raw_printk("%02x ", c);
- }
- raw_printk("\n");
- }
+ printk("%02x ", c);
+ }
+ printk("\n");
+ }
}
-/* Called from entry.S when the watchdog has bitten
- * We print out something resembling an oops dump, and if
- * we have the nice doggy development flag set, we halt here
- * instead of rebooting.
- */
-
-extern void reset_watchdog(void);
-extern void stop_watchdog(void);
-
-
void
-watchdog_bite_hook(struct pt_regs *regs)
+arch_enable_nmi(void)
{
-#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
- local_irq_disable();
- stop_watchdog();
- show_registers(regs);
- while(1) /* nothing */;
-#else
- show_registers(regs);
-#endif
+ asm volatile ("setf m");
}
-/* This is normally the 'Oops' routine */
-void
-die_if_kernel(const char * str, struct pt_regs * regs, long err)
+extern void (*nmi_handler)(struct pt_regs *);
+void handle_nmi(struct pt_regs *regs)
{
- if(user_mode(regs))
- return;
-
-#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
- /* This printout might take too long and trigger the
- * watchdog normally. If we're in the nice doggy
- * development mode, stop the watchdog during printout.
- */
- stop_watchdog();
-#endif
-
- raw_printk("%s: %04lx\n", str, err & 0xffff);
-
- show_registers(regs);
-
-#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
- reset_watchdog();
-#endif
- do_exit(SIGSEGV);
+ if (nmi_handler)
+ nmi_handler(regs);
+
+ /* Wait until nmi is no longer active. (We enable NMI immediately after
+ returning from this function, and we don't want it happening while
+ exiting from the NMI interrupt handler.) */
+ while (*R_IRQ_MASK0_RD & IO_STATE(R_IRQ_MASK0_RD, nmi_pin, active))
+ ;
}
-void arch_enable_nmi(void)
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+void
+handle_BUG(struct pt_regs *regs)
{
- asm volatile("setf m");
+ struct bug_frame f;
+ unsigned char c;
+ unsigned long irp = regs->irp;
+
+ if (__copy_from_user(&f, (const void __user *)(irp - 8), sizeof f))
+ return;
+ if (f.prefix != BUG_PREFIX || f.magic != BUG_MAGIC)
+ return;
+ if (__get_user(c, f.filename))
+ f.filename = "<bad filename>";
+
+ printk("kernel BUG at %s:%d!\n", f.filename, f.line);
}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 05:28:40 +0000