1 files changed, 0 insertions, 473 deletions

diff --git a/arch/blackfin/kernel/kgdb.c b/arch/blackfin/kernel/kgdb.c
deleted file mode 100644
index cf773f0f1f30..000000000000
--- a/arch/blackfin/kernel/kgdb.c
+++ /dev/null
@@ -1,473 +0,0 @@
-/*
- * arch/blackfin/kernel/kgdb.c - Blackfin kgdb pieces
- *
- * Copyright 2005-2008 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/ptrace.h>		/* for linux pt_regs struct */
-#include <linux/kgdb.h>
-#include <linux/uaccess.h>
-#include <asm/irq_regs.h>
-
-void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
-{
-	gdb_regs[BFIN_R0] = regs->r0;
-	gdb_regs[BFIN_R1] = regs->r1;
-	gdb_regs[BFIN_R2] = regs->r2;
-	gdb_regs[BFIN_R3] = regs->r3;
-	gdb_regs[BFIN_R4] = regs->r4;
-	gdb_regs[BFIN_R5] = regs->r5;
-	gdb_regs[BFIN_R6] = regs->r6;
-	gdb_regs[BFIN_R7] = regs->r7;
-	gdb_regs[BFIN_P0] = regs->p0;
-	gdb_regs[BFIN_P1] = regs->p1;
-	gdb_regs[BFIN_P2] = regs->p2;
-	gdb_regs[BFIN_P3] = regs->p3;
-	gdb_regs[BFIN_P4] = regs->p4;
-	gdb_regs[BFIN_P5] = regs->p5;
-	gdb_regs[BFIN_SP] = regs->reserved;
-	gdb_regs[BFIN_FP] = regs->fp;
-	gdb_regs[BFIN_I0] = regs->i0;
-	gdb_regs[BFIN_I1] = regs->i1;
-	gdb_regs[BFIN_I2] = regs->i2;
-	gdb_regs[BFIN_I3] = regs->i3;
-	gdb_regs[BFIN_M0] = regs->m0;
-	gdb_regs[BFIN_M1] = regs->m1;
-	gdb_regs[BFIN_M2] = regs->m2;
-	gdb_regs[BFIN_M3] = regs->m3;
-	gdb_regs[BFIN_B0] = regs->b0;
-	gdb_regs[BFIN_B1] = regs->b1;
-	gdb_regs[BFIN_B2] = regs->b2;
-	gdb_regs[BFIN_B3] = regs->b3;
-	gdb_regs[BFIN_L0] = regs->l0;
-	gdb_regs[BFIN_L1] = regs->l1;
-	gdb_regs[BFIN_L2] = regs->l2;
-	gdb_regs[BFIN_L3] = regs->l3;
-	gdb_regs[BFIN_A0_DOT_X] = regs->a0x;
-	gdb_regs[BFIN_A0_DOT_W] = regs->a0w;
-	gdb_regs[BFIN_A1_DOT_X] = regs->a1x;
-	gdb_regs[BFIN_A1_DOT_W] = regs->a1w;
-	gdb_regs[BFIN_ASTAT] = regs->astat;
-	gdb_regs[BFIN_RETS] = regs->rets;
-	gdb_regs[BFIN_LC0] = regs->lc0;
-	gdb_regs[BFIN_LT0] = regs->lt0;
-	gdb_regs[BFIN_LB0] = regs->lb0;
-	gdb_regs[BFIN_LC1] = regs->lc1;
-	gdb_regs[BFIN_LT1] = regs->lt1;
-	gdb_regs[BFIN_LB1] = regs->lb1;
-	gdb_regs[BFIN_CYCLES] = 0;
-	gdb_regs[BFIN_CYCLES2] = 0;
-	gdb_regs[BFIN_USP] = regs->usp;
-	gdb_regs[BFIN_SEQSTAT] = regs->seqstat;
-	gdb_regs[BFIN_SYSCFG] = regs->syscfg;
-	gdb_regs[BFIN_RETI] = regs->pc;
-	gdb_regs[BFIN_RETX] = regs->retx;
-	gdb_regs[BFIN_RETN] = regs->retn;
-	gdb_regs[BFIN_RETE] = regs->rete;
-	gdb_regs[BFIN_PC] = regs->pc;
-	gdb_regs[BFIN_CC] = (regs->astat >> 5) & 1;
-	gdb_regs[BFIN_EXTRA1] = 0;
-	gdb_regs[BFIN_EXTRA2] = 0;
-	gdb_regs[BFIN_EXTRA3] = 0;
-	gdb_regs[BFIN_IPEND] = regs->ipend;
-}
-
-/*
- * Extracts ebp, esp and eip values understandable by gdb from the values
- * saved by switch_to.
- * thread.esp points to ebp. flags and ebp are pushed in switch_to hence esp
- * prior to entering switch_to is 8 greater than the value that is saved.
- * If switch_to changes, change following code appropriately.
- */
-void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
-{
-	gdb_regs[BFIN_SP] = p->thread.ksp;
-	gdb_regs[BFIN_PC] = p->thread.pc;
-	gdb_regs[BFIN_SEQSTAT] = p->thread.seqstat;
-}
-
-void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
-{
-	regs->r0 = gdb_regs[BFIN_R0];
-	regs->r1 = gdb_regs[BFIN_R1];
-	regs->r2 = gdb_regs[BFIN_R2];
-	regs->r3 = gdb_regs[BFIN_R3];
-	regs->r4 = gdb_regs[BFIN_R4];
-	regs->r5 = gdb_regs[BFIN_R5];
-	regs->r6 = gdb_regs[BFIN_R6];
-	regs->r7 = gdb_regs[BFIN_R7];
-	regs->p0 = gdb_regs[BFIN_P0];
-	regs->p1 = gdb_regs[BFIN_P1];
-	regs->p2 = gdb_regs[BFIN_P2];
-	regs->p3 = gdb_regs[BFIN_P3];
-	regs->p4 = gdb_regs[BFIN_P4];
-	regs->p5 = gdb_regs[BFIN_P5];
-	regs->fp = gdb_regs[BFIN_FP];
-	regs->i0 = gdb_regs[BFIN_I0];
-	regs->i1 = gdb_regs[BFIN_I1];
-	regs->i2 = gdb_regs[BFIN_I2];
-	regs->i3 = gdb_regs[BFIN_I3];
-	regs->m0 = gdb_regs[BFIN_M0];
-	regs->m1 = gdb_regs[BFIN_M1];
-	regs->m2 = gdb_regs[BFIN_M2];
-	regs->m3 = gdb_regs[BFIN_M3];
-	regs->b0 = gdb_regs[BFIN_B0];
-	regs->b1 = gdb_regs[BFIN_B1];
-	regs->b2 = gdb_regs[BFIN_B2];
-	regs->b3 = gdb_regs[BFIN_B3];
-	regs->l0 = gdb_regs[BFIN_L0];
-	regs->l1 = gdb_regs[BFIN_L1];
-	regs->l2 = gdb_regs[BFIN_L2];
-	regs->l3 = gdb_regs[BFIN_L3];
-	regs->a0x = gdb_regs[BFIN_A0_DOT_X];
-	regs->a0w = gdb_regs[BFIN_A0_DOT_W];
-	regs->a1x = gdb_regs[BFIN_A1_DOT_X];
-	regs->a1w = gdb_regs[BFIN_A1_DOT_W];
-	regs->rets = gdb_regs[BFIN_RETS];
-	regs->lc0 = gdb_regs[BFIN_LC0];
-	regs->lt0 = gdb_regs[BFIN_LT0];
-	regs->lb0 = gdb_regs[BFIN_LB0];
-	regs->lc1 = gdb_regs[BFIN_LC1];
-	regs->lt1 = gdb_regs[BFIN_LT1];
-	regs->lb1 = gdb_regs[BFIN_LB1];
-	regs->usp = gdb_regs[BFIN_USP];
-	regs->syscfg = gdb_regs[BFIN_SYSCFG];
-	regs->retx = gdb_regs[BFIN_RETX];
-	regs->retn = gdb_regs[BFIN_RETN];
-	regs->rete = gdb_regs[BFIN_RETE];
-	regs->pc = gdb_regs[BFIN_PC];
-
-#if 0				/* can't change these */
-	regs->astat = gdb_regs[BFIN_ASTAT];
-	regs->seqstat = gdb_regs[BFIN_SEQSTAT];
-	regs->ipend = gdb_regs[BFIN_IPEND];
-#endif
-}
-
-static struct hw_breakpoint {
-	unsigned int occupied:1;
-	unsigned int skip:1;
-	unsigned int enabled:1;
-	unsigned int type:1;
-	unsigned int dataacc:2;
-	unsigned short count;
-	unsigned int addr;
-} breakinfo[HW_WATCHPOINT_NUM];
-
-static int bfin_set_hw_break(unsigned long addr, int len, enum kgdb_bptype type)
-{
-	int breakno;
-	int bfin_type;
-	int dataacc = 0;
-
-	switch (type) {
-	case BP_HARDWARE_BREAKPOINT:
-		bfin_type = TYPE_INST_WATCHPOINT;
-		break;
-	case BP_WRITE_WATCHPOINT:
-		dataacc = 1;
-		bfin_type = TYPE_DATA_WATCHPOINT;
-		break;
-	case BP_READ_WATCHPOINT:
-		dataacc = 2;
-		bfin_type = TYPE_DATA_WATCHPOINT;
-		break;
-	case BP_ACCESS_WATCHPOINT:
-		dataacc = 3;
-		bfin_type = TYPE_DATA_WATCHPOINT;
-		break;
-	default:
-		return -ENOSPC;
-	}
-
-	/* Because hardware data watchpoint impelemented in current
-	 * Blackfin can not trigger an exception event as the hardware
-	 * instrction watchpoint does, we ignaore all data watch point here.
-	 * They can be turned on easily after future blackfin design
-	 * supports this feature.
-	 */
-	for (breakno = 0; breakno < HW_INST_WATCHPOINT_NUM; breakno++)
-		if (bfin_type == breakinfo[breakno].type
-			&& !breakinfo[breakno].occupied) {
-			breakinfo[breakno].occupied = 1;
-			breakinfo[breakno].skip = 0;
-			breakinfo[breakno].enabled = 1;
-			breakinfo[breakno].addr = addr;
-			breakinfo[breakno].dataacc = dataacc;
-			breakinfo[breakno].count = 0;
-			return 0;
-		}
-
-	return -ENOSPC;
-}
-
-static int bfin_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype type)
-{
-	int breakno;
-	int bfin_type;
-
-	switch (type) {
-	case BP_HARDWARE_BREAKPOINT:
-		bfin_type = TYPE_INST_WATCHPOINT;
-		break;
-	case BP_WRITE_WATCHPOINT:
-	case BP_READ_WATCHPOINT:
-	case BP_ACCESS_WATCHPOINT:
-		bfin_type = TYPE_DATA_WATCHPOINT;
-		break;
-	default:
-		return 0;
-	}
-	for (breakno = 0; breakno < HW_WATCHPOINT_NUM; breakno++)
-		if (bfin_type == breakinfo[breakno].type
-			&& breakinfo[breakno].occupied
-			&& breakinfo[breakno].addr == addr) {
-			breakinfo[breakno].occupied = 0;
-			breakinfo[breakno].enabled = 0;
-		}
-
-	return 0;
-}
-
-static void bfin_remove_all_hw_break(void)
-{
-	int breakno;
-
-	memset(breakinfo, 0, sizeof(struct hw_breakpoint)*HW_WATCHPOINT_NUM);
-
-	for (breakno = 0; breakno < HW_INST_WATCHPOINT_NUM; breakno++)
-		breakinfo[breakno].type = TYPE_INST_WATCHPOINT;
-	for (; breakno < HW_WATCHPOINT_NUM; breakno++)
-		breakinfo[breakno].type = TYPE_DATA_WATCHPOINT;
-}
-
-static void bfin_correct_hw_break(void)
-{
-	int breakno;
-	unsigned int wpiactl = 0;
-	unsigned int wpdactl = 0;
-	int enable_wp = 0;
-
-	for (breakno = 0; breakno < HW_WATCHPOINT_NUM; breakno++)
-		if (breakinfo[breakno].enabled) {
-			enable_wp = 1;
-
-			switch (breakno) {
-			case 0:
-				wpiactl |= WPIAEN0|WPICNTEN0;
-				bfin_write_WPIA0(breakinfo[breakno].addr);
-				bfin_write_WPIACNT0(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			case 1:
-				wpiactl |= WPIAEN1|WPICNTEN1;
-				bfin_write_WPIA1(breakinfo[breakno].addr);
-				bfin_write_WPIACNT1(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			case 2:
-				wpiactl |= WPIAEN2|WPICNTEN2;
-				bfin_write_WPIA2(breakinfo[breakno].addr);
-				bfin_write_WPIACNT2(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			case 3:
-				wpiactl |= WPIAEN3|WPICNTEN3;
-				bfin_write_WPIA3(breakinfo[breakno].addr);
-				bfin_write_WPIACNT3(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			case 4:
-				wpiactl |= WPIAEN4|WPICNTEN4;
-				bfin_write_WPIA4(breakinfo[breakno].addr);
-				bfin_write_WPIACNT4(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			case 5:
-				wpiactl |= WPIAEN5|WPICNTEN5;
-				bfin_write_WPIA5(breakinfo[breakno].addr);
-				bfin_write_WPIACNT5(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			case 6:
-				wpdactl |= WPDAEN0|WPDCNTEN0|WPDSRC0;
-				wpdactl |= breakinfo[breakno].dataacc
-					<< WPDACC0_OFFSET;
-				bfin_write_WPDA0(breakinfo[breakno].addr);
-				bfin_write_WPDACNT0(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			case 7:
-				wpdactl |= WPDAEN1|WPDCNTEN1|WPDSRC1;
-				wpdactl |= breakinfo[breakno].dataacc
-					<< WPDACC1_OFFSET;
-				bfin_write_WPDA1(breakinfo[breakno].addr);
-				bfin_write_WPDACNT1(breakinfo[breakno].count
-					+ breakinfo->skip);
-				break;
-			}
-		}
-
-	/* Should enable WPPWR bit first before set any other
-	 * WPIACTL and WPDACTL bits */
-	if (enable_wp) {
-		bfin_write_WPIACTL(WPPWR);
-		CSYNC();
-		bfin_write_WPIACTL(wpiactl|WPPWR);
-		bfin_write_WPDACTL(wpdactl);
-		CSYNC();
-	}
-}
-
-static void bfin_disable_hw_debug(struct pt_regs *regs)
-{
-	/* Disable hardware debugging while we are in kgdb */
-	bfin_write_WPIACTL(0);
-	bfin_write_WPDACTL(0);
-	CSYNC();
-}
-
-#ifdef CONFIG_SMP
-void kgdb_passive_cpu_callback(void *info)
-{
-	kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
-}
-
-void kgdb_roundup_cpus(unsigned long flags)
-{
-	unsigned int cpu;
-
-	for (cpu = cpumask_first(cpu_online_mask); cpu < nr_cpu_ids;
-		cpu = cpumask_next(cpu, cpu_online_mask))
-		smp_call_function_single(cpu, kgdb_passive_cpu_callback,
-					 NULL, 0);
-}
-
-void kgdb_roundup_cpu(int cpu, unsigned long flags)
-{
-	smp_call_function_single(cpu, kgdb_passive_cpu_callback, NULL, 0);
-}
-#endif
-
-#ifdef CONFIG_IPIPE
-static unsigned long kgdb_arch_imask;
-#endif
-
-int kgdb_arch_handle_exception(int vector, int signo,
-			       int err_code, char *remcom_in_buffer,
-			       char *remcom_out_buffer,
-			       struct pt_regs *regs)
-{
-	long addr;
-	char *ptr;
-	int newPC;
-	int i;
-
-	switch (remcom_in_buffer[0]) {
-	case 'c':
-	case 's':
-		if (kgdb_contthread && kgdb_contthread != current) {
-			strcpy(remcom_out_buffer, "E00");
-			break;
-		}
-
-		kgdb_contthread = NULL;
-
-		/* try to read optional parameter, pc unchanged if no parm */
-		ptr = &remcom_in_buffer[1];
-		if (kgdb_hex2long(&ptr, &addr)) {
-			regs->retx = addr;
-		}
-		newPC = regs->retx;
-
-		/* clear the trace bit */
-		regs->syscfg &= 0xfffffffe;
-
-		/* set the trace bit if we're stepping */
-		if (remcom_in_buffer[0] == 's') {
-			regs->syscfg |= 0x1;
-			kgdb_single_step = regs->ipend;
-			kgdb_single_step >>= 6;
-			for (i = 10; i > 0; i--, kgdb_single_step >>= 1)
-				if (kgdb_single_step & 1)
-					break;
-			/* i indicate event priority of current stopped instruction
-			 * user space instruction is 0, IVG15 is 1, IVTMR is 10.
-			 * kgdb_single_step > 0 means in single step mode
-			 */
-			kgdb_single_step = i + 1;
-
-			preempt_disable();
-#ifdef CONFIG_IPIPE
-			kgdb_arch_imask = cpu_pda[raw_smp_processor_id()].ex_imask;
-			cpu_pda[raw_smp_processor_id()].ex_imask = 0;
-#endif
-		}
-
-		bfin_correct_hw_break();
-
-		return 0;
-	}			/* switch */
-	return -1;		/* this means that we do not want to exit from the handler */
-}
-
-struct kgdb_arch arch_kgdb_ops = {
-	.gdb_bpt_instr = {0xa1},
-	.flags = KGDB_HW_BREAKPOINT,
-	.set_hw_breakpoint = bfin_set_hw_break,
-	.remove_hw_breakpoint = bfin_remove_hw_break,
-	.disable_hw_break = bfin_disable_hw_debug,
-	.remove_all_hw_break = bfin_remove_all_hw_break,
-	.correct_hw_break = bfin_correct_hw_break,
-};
-
-#define IN_MEM(addr, size, l1_addr, l1_size) \
-({ \
-	unsigned long __addr = (unsigned long)(addr); \
-	(l1_size && __addr >= l1_addr && __addr + (size) <= l1_addr + l1_size); \
-})
-#define ASYNC_BANK_SIZE \
-	(ASYNC_BANK0_SIZE + ASYNC_BANK1_SIZE + \
-	 ASYNC_BANK2_SIZE + ASYNC_BANK3_SIZE)
-
-int kgdb_validate_break_address(unsigned long addr)
-{
-	int cpu = raw_smp_processor_id();
-
-	if (addr >= 0x1000 && (addr + BREAK_INSTR_SIZE) <= physical_mem_end)
-		return 0;
-	if (IN_MEM(addr, BREAK_INSTR_SIZE, ASYNC_BANK0_BASE, ASYNC_BANK_SIZE))
-		return 0;
-	if (cpu == 0 && IN_MEM(addr, BREAK_INSTR_SIZE, L1_CODE_START, L1_CODE_LENGTH))
-		return 0;
-#ifdef CONFIG_SMP
-	else if (cpu == 1 && IN_MEM(addr, BREAK_INSTR_SIZE, COREB_L1_CODE_START, L1_CODE_LENGTH))
-		return 0;
-#endif
-	if (IN_MEM(addr, BREAK_INSTR_SIZE, L2_START, L2_LENGTH))
-		return 0;
-
-	return -EFAULT;
-}
-
-void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long ip)
-{
-	regs->retx = ip;
-}
-
-int kgdb_arch_init(void)
-{
-	kgdb_single_step = 0;
-#ifdef CONFIG_IPIPE
-	kgdb_arch_imask = 0;
-#endif
-
-	bfin_remove_all_hw_break();
-	return 0;
-}
-
-void kgdb_arch_exit(void)
-{
-}