shpchp: remove unnecessary struct php_ctlr
The struct php_ctlr seems to be only for complicating codes. This
patch removes struct php_ctlr and related codes.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c
index 83a5226..b7bede4 100644
--- a/drivers/pci/hotplug/shpchp_hpc.c
+++ b/drivers/pci/hotplug/shpchp_hpc.c
@@ -212,44 +212,40 @@
#define SLOT_SERR_INT_MASK 0x3
DEFINE_DBG_BUFFER /* Debug string buffer for entire HPC defined here */
-static struct php_ctlr_state_s *php_ctlr_list_head; /* HPC state linked list */
-static int ctlr_seq_num = 0; /* Controller sequenc # */
-static spinlock_t list_lock;
-
static atomic_t shpchp_num_controllers = ATOMIC_INIT(0);
static irqreturn_t shpc_isr(int irq, void *dev_id);
-static void start_int_poll_timer(struct php_ctlr_state_s *php_ctlr, int sec);
+static void start_int_poll_timer(struct controller *ctrl, int sec);
static int hpc_check_cmd_status(struct controller *ctrl);
static inline u8 shpc_readb(struct controller *ctrl, int reg)
{
- return readb(ctrl->hpc_ctlr_handle->creg + reg);
+ return readb(ctrl->creg + reg);
}
static inline void shpc_writeb(struct controller *ctrl, int reg, u8 val)
{
- writeb(val, ctrl->hpc_ctlr_handle->creg + reg);
+ writeb(val, ctrl->creg + reg);
}
static inline u16 shpc_readw(struct controller *ctrl, int reg)
{
- return readw(ctrl->hpc_ctlr_handle->creg + reg);
+ return readw(ctrl->creg + reg);
}
static inline void shpc_writew(struct controller *ctrl, int reg, u16 val)
{
- writew(val, ctrl->hpc_ctlr_handle->creg + reg);
+ writew(val, ctrl->creg + reg);
}
static inline u32 shpc_readl(struct controller *ctrl, int reg)
{
- return readl(ctrl->hpc_ctlr_handle->creg + reg);
+ return readl(ctrl->creg + reg);
}
static inline void shpc_writel(struct controller *ctrl, int reg, u32 val)
{
- writel(val, ctrl->hpc_ctlr_handle->creg + reg);
+ writel(val, ctrl->creg + reg);
}
static inline int shpc_indirect_read(struct controller *ctrl, int index,
@@ -268,21 +264,20 @@
/*
* This is the interrupt polling timeout function.
*/
-static void int_poll_timeout(unsigned long lphp_ctlr)
+static void int_poll_timeout(unsigned long data)
{
- struct php_ctlr_state_s *php_ctlr =
- (struct php_ctlr_state_s *)lphp_ctlr;
+ struct controller *ctrl = (struct controller *)data;
DBG_ENTER_ROUTINE
/* Poll for interrupt events. regs == NULL => polling */
- shpc_isr(0, php_ctlr->callback_instance_id);
+ shpc_isr(0, ctrl);
- init_timer(&php_ctlr->int_poll_timer);
+ init_timer(&ctrl->poll_timer);
if (!shpchp_poll_time)
shpchp_poll_time = 2; /* default polling interval is 2 sec */
- start_int_poll_timer(php_ctlr, shpchp_poll_time);
+ start_int_poll_timer(ctrl, shpchp_poll_time);
DBG_LEAVE_ROUTINE
}
@@ -290,16 +285,16 @@
/*
* This function starts the interrupt polling timer.
*/
-static void start_int_poll_timer(struct php_ctlr_state_s *php_ctlr, int sec)
+static void start_int_poll_timer(struct controller *ctrl, int sec)
{
/* Clamp to sane value */
if ((sec <= 0) || (sec > 60))
sec = 2;
- php_ctlr->int_poll_timer.function = &int_poll_timeout;
- php_ctlr->int_poll_timer.data = (unsigned long)php_ctlr;
- php_ctlr->int_poll_timer.expires = jiffies + sec * HZ;
- add_timer(&php_ctlr->int_poll_timer);
+ ctrl->poll_timer.function = &int_poll_timeout;
+ ctrl->poll_timer.data = (unsigned long)ctrl;
+ ctrl->poll_timer.expires = jiffies + sec * HZ;
+ add_timer(&ctrl->poll_timer);
}
static inline int is_ctrl_busy(struct controller *ctrl)
@@ -666,33 +661,8 @@
shpc_write_cmd(slot, slot->hp_slot, SET_PWR_BLINK);
}
-int shpc_get_ctlr_slot_config(struct controller *ctrl,
- int *num_ctlr_slots, /* number of slots in this HPC */
- int *first_device_num, /* PCI dev num of the first slot in this SHPC */
- int *physical_slot_num, /* phy slot num of the first slot in this SHPC */
- int *updown, /* physical_slot_num increament: 1 or -1 */
- int *flags)
-{
- u32 slot_config;
-
- DBG_ENTER_ROUTINE
-
- slot_config = shpc_readl(ctrl, SLOT_CONFIG);
- *first_device_num = (slot_config & FIRST_DEV_NUM) >> 8;
- *num_ctlr_slots = slot_config & SLOT_NUM;
- *physical_slot_num = (slot_config & PSN) >> 16;
- *updown = ((slot_config & UPDOWN) >> 29) ? 1 : -1;
-
- dbg("%s: physical_slot_num = %x\n", __FUNCTION__, *physical_slot_num);
-
- DBG_LEAVE_ROUTINE
- return 0;
-}
-
static void hpc_release_ctlr(struct controller *ctrl)
{
- struct php_ctlr_state_s *php_ctlr = ctrl->hpc_ctlr_handle;
- struct php_ctlr_state_s *p, *p_prev;
int i;
u32 slot_reg, serr_int;
@@ -722,40 +692,15 @@
serr_int &= ~SERR_INTR_RSVDZ_MASK;
shpc_writel(ctrl, SERR_INTR_ENABLE, serr_int);
- if (shpchp_poll_mode) {
- del_timer(&php_ctlr->int_poll_timer);
- } else {
- if (php_ctlr->irq) {
- free_irq(php_ctlr->irq, ctrl);
- php_ctlr->irq = 0;
- pci_disable_msi(php_ctlr->pci_dev);
- }
+ if (shpchp_poll_mode)
+ del_timer(&ctrl->poll_timer);
+ else {
+ free_irq(ctrl->pci_dev->irq, ctrl);
+ pci_disable_msi(ctrl->pci_dev);
}
- if (php_ctlr->pci_dev) {
- iounmap(php_ctlr->creg);
- release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
- php_ctlr->pci_dev = NULL;
- }
-
- spin_lock(&list_lock);
- p = php_ctlr_list_head;
- p_prev = NULL;
- while (p) {
- if (p == php_ctlr) {
- if (p_prev)
- p_prev->pnext = p->pnext;
- else
- php_ctlr_list_head = p->pnext;
- break;
- } else {
- p_prev = p;
- p = p->pnext;
- }
- }
- spin_unlock(&list_lock);
-
- kfree(php_ctlr);
+ iounmap(ctrl->creg);
+ release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
/*
* If this is the last controller to be released, destroy the
@@ -764,8 +709,7 @@
if (atomic_dec_and_test(&shpchp_num_controllers))
destroy_workqueue(shpchp_wq);
-DBG_LEAVE_ROUTINE
-
+ DBG_LEAVE_ROUTINE
}
static int hpc_power_on_slot(struct slot * slot)
@@ -891,7 +835,6 @@
static irqreturn_t shpc_isr(int irq, void *dev_id)
{
struct controller *ctrl = (struct controller *)dev_id;
- struct php_ctlr_state_s *php_ctlr = ctrl->hpc_ctlr_handle;
u32 serr_int, slot_reg, intr_loc, intr_loc2;
int hp_slot;
@@ -942,20 +885,16 @@
__FUNCTION__, hp_slot, slot_reg);
if (slot_reg & MRL_CHANGE_DETECTED)
- php_ctlr->switch_change_callback(
- hp_slot, php_ctlr->callback_instance_id);
+ shpchp_handle_switch_change(hp_slot, ctrl);
if (slot_reg & BUTTON_PRESS_DETECTED)
- php_ctlr->attention_button_callback(
- hp_slot, php_ctlr->callback_instance_id);
+ shpchp_handle_attention_button(hp_slot, ctrl);
if (slot_reg & PRSNT_CHANGE_DETECTED)
- php_ctlr->presence_change_callback(
- hp_slot , php_ctlr->callback_instance_id);
+ shpchp_handle_presence_change(hp_slot, ctrl);
if (slot_reg & (ISO_PFAULT_DETECTED | CON_PFAULT_DETECTED))
- php_ctlr->power_fault_callback(
- hp_slot, php_ctlr->callback_instance_id);
+ shpchp_handle_power_fault(hp_slot, ctrl);
/* Clear all slot events */
slot_reg &= ~SLOT_REG_RSVDZ_MASK;
@@ -1114,10 +1053,8 @@
.release_ctlr = hpc_release_ctlr,
};
-int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
+int shpc_init(struct controller *ctrl, struct pci_dev *pdev)
{
- struct php_ctlr_state_s *php_ctlr, *p;
- void *instance_id = ctrl;
int rc = -1, num_slots = 0;
u8 hp_slot;
u32 shpc_base_offset;
@@ -1128,16 +1065,6 @@
ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */
- spin_lock_init(&list_lock);
- php_ctlr = kzalloc(sizeof(*php_ctlr), GFP_KERNEL);
-
- if (!php_ctlr) { /* allocate controller state data */
- err("%s: HPC controller memory allocation error!\n", __FUNCTION__);
- goto abort;
- }
-
- php_ctlr->pci_dev = pdev; /* save pci_dev in context */
-
if ((pdev->vendor == PCI_VENDOR_ID_AMD) || (pdev->device ==
PCI_DEVICE_ID_AMD_GOLAM_7450)) {
/* amd shpc driver doesn't use Base Offset; assume 0 */
@@ -1147,20 +1074,20 @@
ctrl->cap_offset = pci_find_capability(pdev, PCI_CAP_ID_SHPC);
if (!ctrl->cap_offset) {
err("%s : cap_offset == 0\n", __FUNCTION__);
- goto abort_free_ctlr;
+ goto abort;
}
dbg("%s: cap_offset = %x\n", __FUNCTION__, ctrl->cap_offset);
rc = shpc_indirect_read(ctrl, 0, &shpc_base_offset);
if (rc) {
err("%s: cannot read base_offset\n", __FUNCTION__);
- goto abort_free_ctlr;
+ goto abort;
}
rc = shpc_indirect_read(ctrl, 3, &tempdword);
if (rc) {
err("%s: cannot read slot config\n", __FUNCTION__);
- goto abort_free_ctlr;
+ goto abort;
}
num_slots = tempdword & SLOT_NUM;
dbg("%s: num_slots (indirect) %x\n", __FUNCTION__, num_slots);
@@ -1170,7 +1097,7 @@
if (rc) {
err("%s: cannot read creg (index = %d)\n",
__FUNCTION__, i);
- goto abort_free_ctlr;
+ goto abort;
}
dbg("%s: offset %d: value %x\n", __FUNCTION__,i,
tempdword);
@@ -1187,24 +1114,24 @@
rc = pci_enable_device(pdev);
if (rc) {
err("%s: pci_enable_device failed\n", __FUNCTION__);
- goto abort_free_ctlr;
+ goto abort;
}
if (!request_mem_region(ctrl->mmio_base, ctrl->mmio_size, MY_NAME)) {
err("%s: cannot reserve MMIO region\n", __FUNCTION__);
rc = -1;
- goto abort_free_ctlr;
+ goto abort;
}
- php_ctlr->creg = ioremap(ctrl->mmio_base, ctrl->mmio_size);
- if (!php_ctlr->creg) {
+ ctrl->creg = ioremap(ctrl->mmio_base, ctrl->mmio_size);
+ if (!ctrl->creg) {
err("%s: cannot remap MMIO region %lx @ %lx\n", __FUNCTION__,
ctrl->mmio_size, ctrl->mmio_base);
release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
rc = -1;
- goto abort_free_ctlr;
+ goto abort;
}
- dbg("%s: php_ctlr->creg %p\n", __FUNCTION__, php_ctlr->creg);
+ dbg("%s: ctrl->creg %p\n", __FUNCTION__, ctrl->creg);
mutex_init(&ctrl->crit_sect);
mutex_init(&ctrl->cmd_lock);
@@ -1212,23 +1139,14 @@
/* Setup wait queue */
init_waitqueue_head(&ctrl->queue);
- /* Find the IRQ */
- php_ctlr->irq = pdev->irq;
- php_ctlr->attention_button_callback = shpchp_handle_attention_button,
- php_ctlr->switch_change_callback = shpchp_handle_switch_change;
- php_ctlr->presence_change_callback = shpchp_handle_presence_change;
- php_ctlr->power_fault_callback = shpchp_handle_power_fault;
- php_ctlr->callback_instance_id = instance_id;
-
- ctrl->hpc_ctlr_handle = php_ctlr;
ctrl->hpc_ops = &shpchp_hpc_ops;
/* Return PCI Controller Info */
slot_config = shpc_readl(ctrl, SLOT_CONFIG);
- php_ctlr->slot_device_offset = (slot_config & FIRST_DEV_NUM) >> 8;
- php_ctlr->num_slots = slot_config & SLOT_NUM;
- dbg("%s: slot_device_offset %x\n", __FUNCTION__, php_ctlr->slot_device_offset);
- dbg("%s: num_slots %x\n", __FUNCTION__, php_ctlr->num_slots);
+ ctrl->slot_device_offset = (slot_config & FIRST_DEV_NUM) >> 8;
+ ctrl->num_slots = slot_config & SLOT_NUM;
+ ctrl->first_slot = (slot_config & PSN) >> 16;
+ ctrl->slot_num_inc = ((slot_config & UPDOWN) >> 29) ? 1 : -1;
/* Mask Global Interrupt Mask & Command Complete Interrupt Mask */
tempdword = shpc_readl(ctrl, SERR_INTR_ENABLE);
@@ -1243,7 +1161,7 @@
/* Mask the MRL sensor SERR Mask of individual slot in
* Slot SERR-INT Mask & clear all the existing event if any
*/
- for (hp_slot = 0; hp_slot < php_ctlr->num_slots; hp_slot++) {
+ for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) {
slot_reg = shpc_readl(ctrl, SLOT_REG(hp_slot));
dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__,
hp_slot, slot_reg);
@@ -1255,24 +1173,27 @@
shpc_writel(ctrl, SLOT_REG(hp_slot), slot_reg);
}
- if (shpchp_poll_mode) {/* Install interrupt polling code */
- /* Install and start the interrupt polling timer */
- init_timer(&php_ctlr->int_poll_timer);
- start_int_poll_timer( php_ctlr, 10 ); /* start with 10 second delay */
+ if (shpchp_poll_mode) {
+ /* Install interrupt polling timer. Start with 10 sec delay */
+ init_timer(&ctrl->poll_timer);
+ start_int_poll_timer(ctrl, 10);
} else {
/* Installs the interrupt handler */
rc = pci_enable_msi(pdev);
if (rc) {
info("Can't get msi for the hotplug controller\n");
info("Use INTx for the hotplug controller\n");
- } else
- php_ctlr->irq = pdev->irq;
+ }
- rc = request_irq(php_ctlr->irq, shpc_isr, IRQF_SHARED, MY_NAME, (void *) ctrl);
- dbg("%s: request_irq %d for hpc%d (returns %d)\n", __FUNCTION__, php_ctlr->irq, ctlr_seq_num, rc);
+ rc = request_irq(ctrl->pci_dev->irq, shpc_isr, IRQF_SHARED,
+ MY_NAME, (void *)ctrl);
+ dbg("%s: request_irq %d for hpc%d (returns %d)\n",
+ __FUNCTION__, ctrl->pci_dev->irq,
+ atomic_read(&shpchp_num_controllers), rc);
if (rc) {
- err("Can't get irq %d for the hotplug controller\n", php_ctlr->irq);
- goto abort_free_ctlr;
+ err("Can't get irq %d for the hotplug controller\n",
+ ctrl->pci_dev->irq);
+ goto abort_iounmap;
}
}
dbg("%s: HPC at b:d:f:irq=0x%x:%x:%x:%x\n", __FUNCTION__,
@@ -1280,24 +1201,6 @@
PCI_FUNC(pdev->devfn), pdev->irq);
get_hp_hw_control_from_firmware(pdev);
- /* Add this HPC instance into the HPC list */
- spin_lock(&list_lock);
- if (php_ctlr_list_head == 0) {
- php_ctlr_list_head = php_ctlr;
- p = php_ctlr_list_head;
- p->pnext = NULL;
- } else {
- p = php_ctlr_list_head;
-
- while (p->pnext)
- p = p->pnext;
-
- p->pnext = php_ctlr;
- }
- spin_unlock(&list_lock);
-
- ctlr_seq_num++;
-
/*
* If this is the first controller to be initialized,
* initialize the shpchpd work queue
@@ -1306,14 +1209,14 @@
shpchp_wq = create_singlethread_workqueue("shpchpd");
if (!shpchp_wq) {
rc = -ENOMEM;
- goto abort_free_ctlr;
+ goto abort_iounmap;
}
}
/*
* Unmask all event interrupts of all slots
*/
- for (hp_slot = 0; hp_slot < php_ctlr->num_slots; hp_slot++) {
+ for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) {
slot_reg = shpc_readl(ctrl, SLOT_REG(hp_slot));
dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__,
hp_slot, slot_reg);
@@ -1336,10 +1239,8 @@
return 0;
/* We end up here for the many possible ways to fail this API. */
-abort_free_ctlr:
- if (php_ctlr->creg)
- iounmap(php_ctlr->creg);
- kfree(php_ctlr);
+abort_iounmap:
+ iounmap(ctrl->creg);
abort:
DBG_LEAVE_ROUTINE
return rc;