1 files changed, 85 insertions, 69 deletions

diff --git a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
index 7f813ae9eaff..992e0d8dbb67 100644
--- a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
+++ b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
@@ -28,6 +28,8 @@
 #include <linux/fs.h>
 #include <linux/errno.h>
 #include <linux/reboot.h>
+#include <linux/smp_lock.h>
+#include <linux/wait.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/sibyte/sb1250.h>
@@ -64,24 +66,25 @@ static void arm_tb(void)
         u_int64_t tb_options = M_SCD_TRACE_CFG_FREEZE_FULL;
         /* Generate an SCD_PERFCNT interrupt in TB_PERIOD Zclks to
            trigger start of trace.  XXX vary sampling period */
-        bus_writeq(0, IOADDR(A_SCD_PERF_CNT_1));
-        scdperfcnt = bus_readq(IOADDR(A_SCD_PERF_CNT_CFG));
+        __raw_writeq(0, IOADDR(A_SCD_PERF_CNT_1));
+        scdperfcnt = __raw_readq(IOADDR(A_SCD_PERF_CNT_CFG));
         /* Unfortunately, in Pass 2 we must clear all counters to knock down
            a previous interrupt request.  This means that bus profiling
            requires ALL of the SCD perf counters. */
-        bus_writeq((scdperfcnt & ~M_SPC_CFG_SRC1) | // keep counters 0,2,3 as is
-                   M_SPC_CFG_ENABLE |            // enable counting
-                   M_SPC_CFG_CLEAR |             // clear all counters
-                   V_SPC_CFG_SRC1(1),            // counter 1 counts cycles
-                   IOADDR(A_SCD_PERF_CNT_CFG));
-        bus_writeq(next, IOADDR(A_SCD_PERF_CNT_1));
+        __raw_writeq((scdperfcnt & ~M_SPC_CFG_SRC1) |
+                                                // keep counters 0,2,3 as is
+                     M_SPC_CFG_ENABLE |         // enable counting
+                     M_SPC_CFG_CLEAR |          // clear all counters
+                     V_SPC_CFG_SRC1(1),         // counter 1 counts cycles
+                     IOADDR(A_SCD_PERF_CNT_CFG));
+        __raw_writeq(next, IOADDR(A_SCD_PERF_CNT_1));
         /* Reset the trace buffer */
-        bus_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
+        __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
 #if 0 && defined(M_SCD_TRACE_CFG_FORCECNT)
         /* XXXKW may want to expose control to the data-collector */
         tb_options |= M_SCD_TRACE_CFG_FORCECNT;
 #endif
-        bus_writeq(tb_options, IOADDR(A_SCD_TRACE_CFG));
+        __raw_writeq(tb_options, IOADDR(A_SCD_TRACE_CFG));
         sbp.tb_armed = 1;
 }
 
@@ -93,23 +96,30 @@ static irqreturn_t sbprof_tb_intr(int irq, void *dev_id, struct pt_regs *regs)
                 /* XXX should use XKPHYS to make writes bypass L2 */
                 u_int64_t *p = sbp.sbprof_tbbuf[sbp.next_tb_sample++];
                 /* Read out trace */
-                bus_writeq(M_SCD_TRACE_CFG_START_READ, IOADDR(A_SCD_TRACE_CFG));
+                __raw_writeq(M_SCD_TRACE_CFG_START_READ,
+                             IOADDR(A_SCD_TRACE_CFG));
                 __asm__ __volatile__ ("sync" : : : "memory");
                 /* Loop runs backwards because bundles are read out in reverse order */
                 for (i = 256 * 6; i > 0; i -= 6) {
                         // Subscripts decrease to put bundle in the order
                         //   t0 lo, t0 hi, t1 lo, t1 hi, t2 lo, t2 hi
-                        p[i-1] = bus_readq(IOADDR(A_SCD_TRACE_READ)); // read t2 hi
-                        p[i-2] = bus_readq(IOADDR(A_SCD_TRACE_READ)); // read t2 lo
-                        p[i-3] = bus_readq(IOADDR(A_SCD_TRACE_READ)); // read t1 hi
-                        p[i-4] = bus_readq(IOADDR(A_SCD_TRACE_READ)); // read t1 lo
-                        p[i-5] = bus_readq(IOADDR(A_SCD_TRACE_READ)); // read t0 hi
-                        p[i-6] = bus_readq(IOADDR(A_SCD_TRACE_READ)); // read t0 lo
+                        p[i - 1] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
+                                                                // read t2 hi
+                        p[i - 2] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
+                                                                // read t2 lo
+                        p[i - 3] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
+                                                                // read t1 hi
+                        p[i - 4] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
+                                                                // read t1 lo
+                        p[i - 5] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
+                                                                // read t0 hi
+                        p[i - 6] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
+                                                                // read t0 lo
                 }
                 if (!sbp.tb_enable) {
                         DBG(printk(DEVNAME ": tb_intr shutdown\n"));
-                        bus_writeq(M_SCD_TRACE_CFG_RESET,
-                                   IOADDR(A_SCD_TRACE_CFG));
+                        __raw_writeq(M_SCD_TRACE_CFG_RESET,
+                                     IOADDR(A_SCD_TRACE_CFG));
                         sbp.tb_armed = 0;
                         wake_up(&sbp.tb_sync);
                 } else {
@@ -118,7 +128,7 @@ static irqreturn_t sbprof_tb_intr(int irq, void *dev_id, struct pt_regs *regs)
         } else {
                 /* No more trace buffer samples */
                 DBG(printk(DEVNAME ": tb_intr full\n"));
-                bus_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
+                __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
                 sbp.tb_armed = 0;
                 if (!sbp.tb_enable) {
                         wake_up(&sbp.tb_sync);
@@ -152,13 +162,11 @@ int sbprof_zbprof_start(struct file *filp)
                 return -EBUSY;
         }
         /* Make sure there isn't a perf-cnt interrupt waiting */
-        scdperfcnt = bus_readq(IOADDR(A_SCD_PERF_CNT_CFG));
+        scdperfcnt = __raw_readq(IOADDR(A_SCD_PERF_CNT_CFG));
         /* Disable and clear counters, override SRC_1 */
-        bus_writeq((scdperfcnt & ~(M_SPC_CFG_SRC1 | M_SPC_CFG_ENABLE)) |
-                   M_SPC_CFG_ENABLE |
-                   M_SPC_CFG_CLEAR |
-                   V_SPC_CFG_SRC1(1),
-                   IOADDR(A_SCD_PERF_CNT_CFG));
+        __raw_writeq((scdperfcnt & ~(M_SPC_CFG_SRC1 | M_SPC_CFG_ENABLE)) |
+                     M_SPC_CFG_ENABLE | M_SPC_CFG_CLEAR | V_SPC_CFG_SRC1(1),
+                     IOADDR(A_SCD_PERF_CNT_CFG));
 
         /* We grab this interrupt to prevent others from trying to use
            it, even though we don't want to service the interrupts
@@ -172,55 +180,55 @@ int sbprof_zbprof_start(struct file *filp)
         /* I need the core to mask these, but the interrupt mapper to
            pass them through.  I am exploiting my knowledge that
            cp0_status masks out IP[5]. krw */
-        bus_writeq(K_INT_MAP_I3,
-                   IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_MAP_BASE) +
-                          (K_INT_PERF_CNT << 3)));
+        __raw_writeq(K_INT_MAP_I3,
+                     IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_MAP_BASE) +
+                            (K_INT_PERF_CNT << 3)));
 
         /* Initialize address traps */
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_UP_0));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_UP_1));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_UP_2));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_UP_3));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_UP_0));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_UP_1));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_UP_2));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_UP_3));
 
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_0));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_1));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_2));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_3));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_0));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_1));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_2));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_DOWN_3));
 
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_CFG_0));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_CFG_1));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_CFG_2));
-        bus_writeq(0, IOADDR(A_ADDR_TRAP_CFG_3));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_CFG_0));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_CFG_1));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_CFG_2));
+        __raw_writeq(0, IOADDR(A_ADDR_TRAP_CFG_3));
 
         /* Initialize Trace Event 0-7 */
         //                              when interrupt
-        bus_writeq(M_SCD_TREVT_INTERRUPT, IOADDR(A_SCD_TRACE_EVENT_0));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_EVENT_1));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_EVENT_2));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_EVENT_3));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_EVENT_4));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_EVENT_5));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_EVENT_6));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_EVENT_7));
+        __raw_writeq(M_SCD_TREVT_INTERRUPT, IOADDR(A_SCD_TRACE_EVENT_0));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_1));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_2));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_3));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_4));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_5));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_6));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_7));
 
         /* Initialize Trace Sequence 0-7 */
         //                                   Start on event 0 (interrupt)
-        bus_writeq(V_SCD_TRSEQ_FUNC_START | 0x0fff,
-                   IOADDR(A_SCD_TRACE_SEQUENCE_0));
+        __raw_writeq(V_SCD_TRSEQ_FUNC_START | 0x0fff,
+                     IOADDR(A_SCD_TRACE_SEQUENCE_0));
         //                        dsamp when d used | asamp when a used
-        bus_writeq(M_SCD_TRSEQ_ASAMPLE | M_SCD_TRSEQ_DSAMPLE |
-                   K_SCD_TRSEQ_TRIGGER_ALL,
-                   IOADDR(A_SCD_TRACE_SEQUENCE_1));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_2));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_3));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_4));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_5));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_6));
-        bus_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_7));
+        __raw_writeq(M_SCD_TRSEQ_ASAMPLE | M_SCD_TRSEQ_DSAMPLE |
+                     K_SCD_TRSEQ_TRIGGER_ALL,
+                     IOADDR(A_SCD_TRACE_SEQUENCE_1));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_2));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_3));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_4));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_5));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_6));
+        __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_7));
 
         /* Now indicate the PERF_CNT interrupt as a trace-relevant interrupt */
-        bus_writeq((1ULL << K_INT_PERF_CNT),
-                   IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_TRACE)));
+        __raw_writeq(1ULL << K_INT_PERF_CNT,
+                     IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_TRACE)));
 
         arm_tb();
 
@@ -231,6 +239,7 @@ int sbprof_zbprof_start(struct file *filp)
 
 int sbprof_zbprof_stop(void)
 {
+        DEFINE_WAIT(wait);
         DBG(printk(DEVNAME ": stopping\n"));
 
         if (sbp.tb_enable) {
@@ -240,7 +249,9 @@ int sbprof_zbprof_stop(void)
                    this sleep happens. */
                 if (sbp.tb_armed) {
                         DBG(printk(DEVNAME ": wait for disarm\n"));
-                        interruptible_sleep_on(&sbp.tb_sync);
+                        prepare_to_wait(&sbp.tb_sync, &wait, TASK_INTERRUPTIBLE);
+                        schedule();
+                        finish_wait(&sbp.tb_sync, &wait);
                         DBG(printk(DEVNAME ": disarm complete\n"));
                 }
                 free_irq(K_INT_TRACE_FREEZE, &sbp);
@@ -333,13 +344,13 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf,
         return count;
 }
 
-static int sbprof_tb_ioctl(struct inode *inode,
-                           struct file *filp,
-                           unsigned int command,
-                           unsigned long arg)
+static long sbprof_tb_ioctl(struct file *filp,
+                            unsigned int command,
+                            unsigned long arg)
 {
         int error = 0;
 
+        lock_kernel();
         switch (command) {
         case SBPROF_ZBSTART:
                 error = sbprof_zbprof_start(filp);
@@ -348,13 +359,17 @@ static int sbprof_tb_ioctl(struct inode *inode,
                 error = sbprof_zbprof_stop();
                 break;
         case SBPROF_ZBWAITFULL:
-                interruptible_sleep_on(&sbp.tb_read);
+                DEFINE_WAIT(wait);
+                prepare_to_wait(&sbp.tb_read, &wait, TASK_INTERRUPTIBLE);
+                schedule();
+                finish_wait(&sbp.tb_read, &wait);
                 /* XXXKW check if interrupted? */
                 return put_user(TB_FULL, (int *) arg);
         default:
                 error = -EINVAL;
                 break;
         }
+        unlock_kernel();
 
         return error;
 }
@@ -364,7 +379,8 @@ static struct file_operations sbprof_tb_fops = {
         .open           = sbprof_tb_open,
         .release        = sbprof_tb_release,
         .read           = sbprof_tb_read,
-        .ioctl          = sbprof_tb_ioctl,
+        .unlocked_ioctl = sbprof_tb_ioctl,
+        .compat_ioctl   = sbprof_tb_ioctl,
         .mmap           = NULL,
 };