#include <linux/delay.h>
#include <linux/module.h>
#include <linux/pci.h>
-#include <linux/smp_lock.h>
#include <linux/init.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/kthread.h>
#include "ibmphp.h"
-static int to_debug = FALSE;
+static int to_debug = 0;
#define debug_polling(fmt, arg...) do { if (to_debug) debug (fmt, arg); } while (0)
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// macro utilities
//----------------------------------------------------------------------------
-// if bits 20,22,25,26,27,29,30 are OFF return TRUE
-#define HPC_I2CSTATUS_CHECK(s) ((u8)((s & 0x00000A76) ? FALSE : TRUE))
+// if bits 20,22,25,26,27,29,30 are OFF return 1
+#define HPC_I2CSTATUS_CHECK(s) ((u8)((s & 0x00000A76) ? 0 : 1))
//----------------------------------------------------------------------------
// global variables
//----------------------------------------------------------------------------
-static int ibmphp_shutdown;
-static int tid_poll;
-static struct semaphore sem_hpcaccess; // lock access to HPC
+static struct mutex sem_hpcaccess; // lock access to HPC
static struct semaphore semOperations; // lock all operations and
// access to data structures
static struct semaphore sem_exit; // make sure polling thread goes away
+static struct task_struct *ibmphp_poll_thread;
//----------------------------------------------------------------------------
// local function prototypes
//----------------------------------------------------------------------------
static u8 hpc_readcmdtoindex (u8, u8);
static void get_hpc_access (void);
static void free_hpc_access (void);
-static void poll_hpc (void);
+static int poll_hpc(void *data);
static int process_changeinstatus (struct slot *, struct slot *);
static int process_changeinlatch (u8, u8, struct controller *);
-static int hpc_poll_thread (void *);
static int hpc_wait_ctlr_notworking (int, struct controller *, void __iomem *, u8 *);
//----------------------------------------------------------------------------
{
debug ("%s - Entry\n", __FUNCTION__);
- init_MUTEX (&sem_hpcaccess);
+ mutex_init(&sem_hpcaccess);
init_MUTEX (&semOperations);
init_MUTEX_LOCKED (&sem_exit);
- to_debug = FALSE;
- ibmphp_shutdown = FALSE;
- tid_poll = 0;
+ to_debug = 0;
debug ("%s - Exit\n", __FUNCTION__);
}
*
* Action: issue a READ command to HPC
*
-* Input: pslot - can not be NULL for READ_ALLSTAT
+* Input: pslot - cannot be NULL for READ_ALLSTAT
* pstatus - can be NULL for READ_ALLSTAT
*
* Return 0 or error codes
// check controller is still not working on the command
//--------------------------------------------------------------------
timeout = CMD_COMPLETE_TOUT_SEC;
- done = FALSE;
+ done = 0;
while (!done) {
rc = hpc_wait_ctlr_notworking (HPC_CTLR_WORKING_TOUT, ctlr_ptr, wpg_bbar,
&status);
if (!rc) {
if (NEEDTOCHECK_CMDSTATUS (cmd)) {
if (CTLR_FINISHED (status) == HPC_CTLR_FINISHED_YES)
- done = TRUE;
+ done = 1;
} else
- done = TRUE;
+ done = 1;
}
if (!done) {
msleep(1000);
if (timeout < 1) {
- done = TRUE;
+ done = 1;
err ("%s - Error command complete timeout\n", __FUNCTION__);
rc = -EFAULT;
} else
*---------------------------------------------------------------------*/
static void get_hpc_access (void)
{
- down (&sem_hpcaccess);
+ mutex_lock(&sem_hpcaccess);
}
/*----------------------------------------------------------------------
*---------------------------------------------------------------------*/
void free_hpc_access (void)
{
- up (&sem_hpcaccess);
+ mutex_unlock(&sem_hpcaccess);
}
/*----------------------------------------------------------------------
void ibmphp_lock_operations (void)
{
down (&semOperations);
- to_debug = TRUE;
+ to_debug = 1;
}
/*----------------------------------------------------------------------
{
debug ("%s - Entry\n", __FUNCTION__);
up (&semOperations);
- to_debug = FALSE;
+ to_debug = 0;
debug ("%s - Exit\n", __FUNCTION__);
}
#define POLL_LATCH_REGISTER 0
#define POLL_SLOTS 1
#define POLL_SLEEP 2
-static void poll_hpc (void)
+static int poll_hpc(void *data)
{
struct slot myslot;
struct slot *pslot = NULL;
debug ("%s - Entry\n", __FUNCTION__);
- while (!ibmphp_shutdown) {
- if (ibmphp_shutdown)
- break;
-
+ while (!kthread_should_stop()) {
/* try to get the lock to do some kind of hardware access */
down (&semOperations);
up (&semOperations);
msleep(POLL_INTERVAL_SEC * 1000);
- if (ibmphp_shutdown)
+ if (kthread_should_stop())
break;
down (&semOperations);
}
up (&sem_exit);
debug ("%s - Exit\n", __FUNCTION__);
+ return 0;
}
{
u8 status;
int rc = 0;
- u8 disable = FALSE;
- u8 update = FALSE;
+ u8 disable = 0;
+ u8 update = 0;
debug ("process_changeinstatus - Entry pslot[%p], poldslot[%p]\n", pslot, poldslot);
// bit 0 - HPC_SLOT_POWER
if ((pslot->status & 0x01) != (poldslot->status & 0x01))
- update = TRUE;
+ update = 1;
// bit 1 - HPC_SLOT_CONNECT
// ignore
// bit 2 - HPC_SLOT_ATTN
if ((pslot->status & 0x04) != (poldslot->status & 0x04))
- update = TRUE;
+ update = 1;
// bit 3 - HPC_SLOT_PRSNT2
// bit 4 - HPC_SLOT_PRSNT1
if (((pslot->status & 0x08) != (poldslot->status & 0x08))
|| ((pslot->status & 0x10) != (poldslot->status & 0x10)))
- update = TRUE;
+ update = 1;
// bit 5 - HPC_SLOT_PWRGD
if ((pslot->status & 0x20) != (poldslot->status & 0x20))
// OFF -> ON: ignore, ON -> OFF: disable slot
if ((poldslot->status & 0x20) && (SLOT_CONNECT (poldslot->status) == HPC_SLOT_CONNECTED) && (SLOT_PRESENT (poldslot->status)))
- disable = TRUE;
+ disable = 1;
// bit 6 - HPC_SLOT_BUS_SPEED
// ignore
// bit 7 - HPC_SLOT_LATCH
if ((pslot->status & 0x80) != (poldslot->status & 0x80)) {
- update = TRUE;
+ update = 1;
// OPEN -> CLOSE
if (pslot->status & 0x80) {
if (SLOT_PWRGD (pslot->status)) {
msleep(1000);
rc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &status);
if (SLOT_PWRGD (status))
- update = TRUE;
+ update = 1;
else // overwrite power in pslot to OFF
pslot->status &= ~HPC_SLOT_POWER;
}
// CLOSE -> OPEN
else if ((SLOT_PWRGD (poldslot->status) == HPC_SLOT_PWRGD_GOOD)
&& (SLOT_CONNECT (poldslot->status) == HPC_SLOT_CONNECTED) && (SLOT_PRESENT (poldslot->status))) {
- disable = TRUE;
+ disable = 1;
}
// else - ignore
}
// bit 4 - HPC_SLOT_BLINK_ATTN
if ((pslot->ext_status & 0x08) != (poldslot->ext_status & 0x08))
- update = TRUE;
+ update = 1;
if (disable) {
debug ("process_changeinstatus - disable slot\n");
- pslot->flag = FALSE;
+ pslot->flag = 0;
rc = ibmphp_do_disable_slot (pslot);
}
return rc;
}
-/*----------------------------------------------------------------------
-* Name: hpc_poll_thread
-*
-* Action: polling
-*
-* Return 0
-* Value:
-*---------------------------------------------------------------------*/
-static int hpc_poll_thread (void *data)
-{
- debug ("%s - Entry\n", __FUNCTION__);
-
- daemonize("hpc_poll");
- allow_signal(SIGKILL);
-
- poll_hpc ();
-
- tid_poll = 0;
- debug ("%s - Exit\n", __FUNCTION__);
- return 0;
-}
-
-
/*----------------------------------------------------------------------
* Name: ibmphp_hpc_start_poll_thread
*
*---------------------------------------------------------------------*/
int __init ibmphp_hpc_start_poll_thread (void)
{
- int rc = 0;
-
debug ("%s - Entry\n", __FUNCTION__);
- tid_poll = kernel_thread (hpc_poll_thread, NULL, 0);
- if (tid_poll < 0) {
+ ibmphp_poll_thread = kthread_run(poll_hpc, NULL, "hpc_poll");
+ if (IS_ERR(ibmphp_poll_thread)) {
err ("%s - Error, thread not started\n", __FUNCTION__);
- rc = -1;
+ return PTR_ERR(ibmphp_poll_thread);
}
-
- debug ("%s - Exit tid_poll[%d] rc[%d]\n", __FUNCTION__, tid_poll, rc);
- return rc;
+ return 0;
}
/*----------------------------------------------------------------------
{
debug ("%s - Entry\n", __FUNCTION__);
- ibmphp_shutdown = TRUE;
+ kthread_stop(ibmphp_poll_thread);
debug ("before locking operations \n");
ibmphp_lock_operations ();
debug ("after locking operations \n");
u8 * pstatus)
{
int rc = 0;
- u8 done = FALSE;
+ u8 done = 0;
debug_polling ("hpc_wait_ctlr_notworking - Entry timeout[%d]\n", timeout);
*pstatus = ctrl_read (ctlr_ptr, wpg_bbar, WPG_CTLR_INDEX);
if (*pstatus == HPC_ERROR) {
rc = HPC_ERROR;
- done = TRUE;
+ done = 1;
}
if (CTLR_WORKING (*pstatus) == HPC_CTLR_WORKING_NO)
- done = TRUE;
+ done = 1;
if (!done) {
msleep(1000);
if (timeout < 1) {
- done = TRUE;
+ done = 1;
err ("HPCreadslot - Error ctlr timeout\n");
rc = HPC_ERROR;
} else
projects / linux-2.6 / blobdiff