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-rw-r--r--drivers/pci/hotplug/acpiphp.h1
-rw-r--r--drivers/pci/hotplug/acpiphp_core.c6
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c53
-rw-r--r--drivers/pci/hotplug/acpiphp_ibm.c7
-rw-r--r--drivers/pci/hotplug/cpci_hotplug_core.c66
-rw-r--r--drivers/pci/hotplug/cpci_hotplug_pci.c2
-rw-r--r--drivers/pci/hotplug/cpqphp_core.c12
-rw-r--r--drivers/pci/hotplug/pciehp.h1
-rw-r--r--drivers/pci/hotplug/pciehp_ctrl.c12
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c191
-rw-r--r--drivers/pci/hotplug/rpadlpar_core.c6
11 files changed, 203 insertions, 154 deletions
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index ddbadd95387..f6cc0c5b565 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -211,6 +211,7 @@ typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
+extern int acpiphp_eject_slot (struct acpiphp_slot *slot);
extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index fa5c0197d57..a0ca63adad5 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -156,11 +156,15 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
static int disable_slot(struct hotplug_slot *hotplug_slot)
{
struct slot *slot = hotplug_slot->private;
+ int retval;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
/* disable the specified slot */
- return acpiphp_disable_slot(slot->acpi_slot);
+ retval = acpiphp_disable_slot(slot->acpi_slot);
+ if (!retval)
+ retval = acpiphp_eject_slot(slot->acpi_slot);
+ return retval;
}
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 9ef4e989afc..1e125b56c9a 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -1282,7 +1282,7 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
/**
* acpiphp_eject_slot - physically eject the slot
*/
-static int acpiphp_eject_slot(struct acpiphp_slot *slot)
+int acpiphp_eject_slot(struct acpiphp_slot *slot)
{
acpi_status status;
struct acpiphp_func *func;
@@ -1368,6 +1368,9 @@ static void program_hpp(struct pci_dev *dev, struct acpiphp_bridge *bridge)
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
return;
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
+ return;
+
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
bridge->hpp.t0->cache_line_size);
pci_write_config_byte(dev, PCI_LATENCY_TIMER,
@@ -1502,6 +1505,37 @@ static void handle_bridge_insertion(acpi_handle handle, u32 type)
* ACPI event handlers
*/
+static acpi_status
+count_sub_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+ int *count = (int *)context;
+ struct acpiphp_bridge *bridge;
+
+ bridge = acpiphp_handle_to_bridge(handle);
+ if (bridge)
+ (*count)++;
+ return AE_OK ;
+}
+
+static acpi_status
+check_sub_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+ struct acpiphp_bridge *bridge;
+ char objname[64];
+ struct acpi_buffer buffer = { .length = sizeof(objname),
+ .pointer = objname };
+
+ bridge = acpiphp_handle_to_bridge(handle);
+ if (bridge) {
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+ dbg("%s: re-enumerating slots under %s\n",
+ __FUNCTION__, objname);
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+ acpiphp_check_bridge(bridge);
+ }
+ return AE_OK ;
+}
+
/**
* handle_hotplug_event_bridge - handle ACPI event on bridges
*
@@ -1519,6 +1553,7 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type, void *cont
struct acpi_buffer buffer = { .length = sizeof(objname),
.pointer = objname };
struct acpi_device *device;
+ int num_sub_bridges = 0;
if (acpi_bus_get_device(handle, &device)) {
/* This bridge must have just been physically inserted */
@@ -1527,7 +1562,12 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type, void *cont
}
bridge = acpiphp_handle_to_bridge(handle);
- if (!bridge) {
+ if (type == ACPI_NOTIFY_BUS_CHECK) {
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, ACPI_UINT32_MAX,
+ count_sub_bridges, &num_sub_bridges, NULL);
+ }
+
+ if (!bridge && !num_sub_bridges) {
err("cannot get bridge info\n");
return;
}
@@ -1538,7 +1578,14 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type, void *cont
case ACPI_NOTIFY_BUS_CHECK:
/* bus re-enumerate */
dbg("%s: Bus check notify on %s\n", __FUNCTION__, objname);
- acpiphp_check_bridge(bridge);
+ if (bridge) {
+ dbg("%s: re-enumerating slots under %s\n",
+ __FUNCTION__, objname);
+ acpiphp_check_bridge(bridge);
+ }
+ if (num_sub_bridges)
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
+ ACPI_UINT32_MAX, check_sub_bridges, NULL, NULL);
break;
case ACPI_NOTIFY_DEVICE_CHECK:
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index e7322c25d37..70db38c0ced 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -106,7 +106,8 @@ static int ibm_get_attention_status(struct hotplug_slot *slot, u8 *status);
static void ibm_handle_events(acpi_handle handle, u32 event, void *context);
static int ibm_get_table_from_acpi(char **bufp);
static ssize_t ibm_read_apci_table(struct kobject *kobj,
- char *buffer, loff_t pos, size_t size);
+ struct bin_attribute *bin_attr,
+ char *buffer, loff_t pos, size_t size);
static acpi_status __init ibm_find_acpi_device(acpi_handle handle,
u32 lvl, void *context, void **rv);
static int __init ibm_acpiphp_init(void);
@@ -117,7 +118,6 @@ static struct notification ibm_note;
static struct bin_attribute ibm_apci_table_attr = {
.attr = {
.name = "apci_table",
- .owner = THIS_MODULE,
.mode = S_IRUGO,
},
.read = ibm_read_apci_table,
@@ -358,7 +358,8 @@ read_table_done:
* our solution is to only allow reading the table in all at once
**/
static ssize_t ibm_read_apci_table(struct kobject *kobj,
- char *buffer, loff_t pos, size_t size)
+ struct bin_attribute *bin_attr,
+ char *buffer, loff_t pos, size_t size)
{
int bytes_read = -EINVAL;
char *table = NULL;
diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c
index 684551559d4..ed4d44e3332 100644
--- a/drivers/pci/hotplug/cpci_hotplug_core.c
+++ b/drivers/pci/hotplug/cpci_hotplug_core.c
@@ -35,6 +35,7 @@
#include <linux/smp_lock.h>
#include <asm/atomic.h>
#include <linux/delay.h>
+#include <linux/kthread.h>
#include "cpci_hotplug.h"
#define DRIVER_AUTHOR "Scott Murray <scottm@somanetworks.com>"
@@ -59,9 +60,8 @@ static int slots;
static atomic_t extracting;
int cpci_debug;
static struct cpci_hp_controller *controller;
-static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
-static struct semaphore thread_exit; /* guard ensure thread has exited before calling it quits */
-static int thread_finished = 1;
+static struct task_struct *cpci_thread;
+static int thread_finished;
static int enable_slot(struct hotplug_slot *slot);
static int disable_slot(struct hotplug_slot *slot);
@@ -357,9 +357,7 @@ cpci_hp_intr(int irq, void *data)
controller->ops->disable_irq();
/* Trigger processing by the event thread */
- dbg("Signal event_semaphore");
- up(&event_semaphore);
- dbg("exited cpci_hp_intr");
+ wake_up_process(cpci_thread);
return IRQ_HANDLED;
}
@@ -521,17 +519,12 @@ event_thread(void *data)
{
int rc;
- lock_kernel();
- daemonize("cpci_hp_eventd");
- unlock_kernel();
-
dbg("%s - event thread started", __FUNCTION__);
while (1) {
dbg("event thread sleeping");
- down_interruptible(&event_semaphore);
- dbg("event thread woken, thread_finished = %d",
- thread_finished);
- if (thread_finished || signal_pending(current))
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ if (kthread_should_stop())
break;
do {
rc = check_slots();
@@ -541,18 +534,17 @@ event_thread(void *data)
} else if (rc < 0) {
dbg("%s - error checking slots", __FUNCTION__);
thread_finished = 1;
- break;
+ goto out;
}
- } while (atomic_read(&extracting) && !thread_finished);
- if (thread_finished)
+ } while (atomic_read(&extracting) && !kthread_should_stop());
+ if (kthread_should_stop())
break;
/* Re-enable ENUM# interrupt */
dbg("%s - re-enabling irq", __FUNCTION__);
controller->ops->enable_irq();
}
- dbg("%s - event thread signals exit", __FUNCTION__);
- up(&thread_exit);
+ out:
return 0;
}
@@ -562,12 +554,8 @@ poll_thread(void *data)
{
int rc;
- lock_kernel();
- daemonize("cpci_hp_polld");
- unlock_kernel();
-
while (1) {
- if (thread_finished || signal_pending(current))
+ if (kthread_should_stop() || signal_pending(current))
break;
if (controller->ops->query_enum()) {
do {
@@ -578,48 +566,36 @@ poll_thread(void *data)
} else if (rc < 0) {
dbg("%s - error checking slots", __FUNCTION__);
thread_finished = 1;
- break;
+ goto out;
}
- } while (atomic_read(&extracting) && !thread_finished);
+ } while (atomic_read(&extracting) && !kthread_should_stop());
}
msleep(100);
}
- dbg("poll thread signals exit");
- up(&thread_exit);
+ out:
return 0;
}
static int
cpci_start_thread(void)
{
- int pid;
-
- /* initialize our semaphores */
- init_MUTEX_LOCKED(&event_semaphore);
- init_MUTEX_LOCKED(&thread_exit);
- thread_finished = 0;
-
if (controller->irq)
- pid = kernel_thread(event_thread, NULL, 0);
+ cpci_thread = kthread_run(event_thread, NULL, "cpci_hp_eventd");
else
- pid = kernel_thread(poll_thread, NULL, 0);
- if (pid < 0) {
+ cpci_thread = kthread_run(poll_thread, NULL, "cpci_hp_polld");
+ if (IS_ERR(cpci_thread)) {
err("Can't start up our thread");
- return -1;
+ return PTR_ERR(cpci_thread);
}
- dbg("Our thread pid = %d", pid);
+ thread_finished = 0;
return 0;
}
static void
cpci_stop_thread(void)
{
+ kthread_stop(cpci_thread);
thread_finished = 1;
- dbg("thread finish command given");
- if (controller->irq)
- up(&event_semaphore);
- dbg("wait for thread to exit");
- down(&thread_exit);
}
int
diff --git a/drivers/pci/hotplug/cpci_hotplug_pci.c b/drivers/pci/hotplug/cpci_hotplug_pci.c
index 7b1beaad275..5e9be44817c 100644
--- a/drivers/pci/hotplug/cpci_hotplug_pci.c
+++ b/drivers/pci/hotplug/cpci_hotplug_pci.c
@@ -45,8 +45,6 @@ extern int cpci_debug;
#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
-#define ROUND_UP(x, a) (((x) + (a) - 1) & ~((a) - 1))
-
u8 cpci_get_attention_status(struct slot* slot)
{
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 5617cfdadc5..d590a99930f 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -796,7 +796,6 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
u8 num_of_slots = 0;
u8 hp_slot = 0;
u8 device;
- u8 rev;
u8 bus_cap;
u16 temp_word;
u16 vendor_id;
@@ -823,9 +822,8 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
dbg("Vendor ID: %x\n", vendor_id);
- rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
- dbg("revision: %d\n", rev);
- if (rc || ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!rev))) {
+ dbg("revision: %d\n", pdev->revision);
+ if ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!pdev->revision)) {
err(msg_HPC_rev_error);
rc = -ENODEV;
goto err_disable_device;
@@ -836,7 +834,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
* For Intel, each SSID bit identifies a PHP capability.
* Also Intel HPC's may have RID=0.
*/
- if ((rev > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) {
+ if ((pdev->revision > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) {
// TODO: This code can be made to support non-Compaq or Intel subsystem IDs
rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid);
if (rc) {
@@ -870,7 +868,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
switch (subsystem_vid) {
case PCI_VENDOR_ID_COMPAQ:
- if (rev >= 0x13) { /* CIOBX */
+ if (pdev->revision >= 0x13) { /* CIOBX */
ctrl->push_flag = 1;
ctrl->slot_switch_type = 1;
ctrl->push_button = 1;
@@ -1075,7 +1073,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus));
ctrl->bus = pdev->bus->number;
- ctrl->rev = rev;
+ ctrl->rev = pdev->revision;
dbg("bus device function rev: %d %d %d %d\n", ctrl->bus,
PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev);
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index ccc57627201..7959c222dc2 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -103,6 +103,7 @@ struct controller {
u8 cap_base;
struct timer_list poll_timer;
volatile int cmd_busy;
+ spinlock_t lock;
};
#define INT_BUTTON_IGNORE 0
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 7f22caa7017..98e541ffef3 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -197,6 +197,12 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
__FUNCTION__);
return;
}
+ /*
+ * After turning power off, we must wait for at least
+ * 1 second before taking any action that relies on
+ * power having been removed from the slot/adapter.
+ */
+ msleep(1000);
}
}
@@ -615,6 +621,12 @@ int pciehp_disable_slot(struct slot *p_slot)
mutex_unlock(&p_slot->ctrl->crit_sect);
return -EINVAL;
}
+ /*
+ * After turning power off, we must wait for at least
+ * 1 second before taking any action that relies on
+ * power having been removed from the slot/adapter.
+ */
+ msleep(1000);
}
ret = remove_board(p_slot);
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 9aac6a87eb5..016eea94a8a 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -275,11 +275,19 @@ static inline int pcie_wait_cmd(struct controller *ctrl)
return retval;
}
-static int pcie_write_cmd(struct slot *slot, u16 cmd)
+/**
+ * pcie_write_cmd - Issue controller command
+ * @slot: slot to which the command is issued
+ * @cmd: command value written to slot control register
+ * @mask: bitmask of slot control register to be modified
+ */
+static int pcie_write_cmd(struct slot *slot, u16 cmd, u16 mask)
{
struct controller *ctrl = slot->ctrl;
int retval = 0;
u16 slot_status;
+ u16 slot_ctrl;
+ unsigned long flags;
DBG_ENTER_ROUTINE
@@ -299,17 +307,29 @@ static int pcie_write_cmd(struct slot *slot, u16 cmd)
__FUNCTION__);
}
- ctrl->cmd_busy = 1;
- retval = pciehp_writew(ctrl, SLOTCTRL, (cmd | CMD_CMPL_INTR_ENABLE));
+ spin_lock_irqsave(&ctrl->lock, flags);
+ retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
if (retval) {
- err("%s: Cannot write to SLOTCTRL register\n", __FUNCTION__);
- goto out;
+ err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
+ goto out_spin_unlock;
}
+ slot_ctrl &= ~mask;
+ slot_ctrl |= ((cmd & mask) | CMD_CMPL_INTR_ENABLE);
+
+ ctrl->cmd_busy = 1;
+ retval = pciehp_writew(ctrl, SLOTCTRL, slot_ctrl);
+ if (retval)
+ err("%s: Cannot write to SLOTCTRL register\n", __FUNCTION__);
+
+ out_spin_unlock:
+ spin_unlock_irqrestore(&ctrl->lock, flags);
+
/*
* Wait for command completion.
*/
- retval = pcie_wait_cmd(ctrl);
+ if (!retval)
+ retval = pcie_wait_cmd(ctrl);
out:
mutex_unlock(&ctrl->ctrl_lock);
DBG_LEAVE_ROUTINE
@@ -502,25 +522,20 @@ static int hpc_get_emi_status(struct slot *slot, u8 *status)
static int hpc_toggle_emi(struct slot *slot)
{
- struct controller *ctrl = slot->ctrl;
- u16 slot_cmd = 0;
- u16 slot_ctrl;
- int rc = 0;
+ u16 slot_cmd;
+ u16 cmd_mask;
+ int rc;
DBG_ENTER_ROUTINE
- rc = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
- if (rc) {
- err("%s : hp_register_read_word SLOT_CTRL failed\n",
- __FUNCTION__);
- return rc;
- }
-
- slot_cmd = (slot_ctrl | EMI_CTRL);
- if (!pciehp_poll_mode)
+ slot_cmd = EMI_CTRL;
+ cmd_mask = EMI_CTRL;
+ if (!pciehp_poll_mode) {
slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ cmd_mask = cmd_mask | HP_INTR_ENABLE;
+ }
- pcie_write_cmd(slot, slot_cmd);
+ rc = pcie_write_cmd(slot, slot_cmd, cmd_mask);
slot->last_emi_toggle = get_seconds();
DBG_LEAVE_ROUTINE
return rc;
@@ -529,35 +544,32 @@ static int hpc_toggle_emi(struct slot *slot)
static int hpc_set_attention_status(struct slot *slot, u8 value)
{
struct controller *ctrl = slot->ctrl;
- u16 slot_cmd = 0;
- u16 slot_ctrl;
- int rc = 0;
+ u16 slot_cmd;
+ u16 cmd_mask;
+ int rc;
DBG_ENTER_ROUTINE
- rc = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
- if (rc) {
- err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
- return rc;
- }
-
+ cmd_mask = ATTN_LED_CTRL;
switch (value) {
case 0 : /* turn off */
- slot_cmd = (slot_ctrl & ~ATTN_LED_CTRL) | 0x00C0;
+ slot_cmd = 0x00C0;
break;
case 1: /* turn on */
- slot_cmd = (slot_ctrl & ~ATTN_LED_CTRL) | 0x0040;
+ slot_cmd = 0x0040;
break;
case 2: /* turn blink */
- slot_cmd = (slot_ctrl & ~ATTN_LED_CTRL) | 0x0080;
+ slot_cmd = 0x0080;
break;
default:
return -1;
}
- if (!pciehp_poll_mode)
- slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ if (!pciehp_poll_mode) {
+ slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ cmd_mask = cmd_mask | HP_INTR_ENABLE;
+ }
- pcie_write_cmd(slot, slot_cmd);
+ rc = pcie_write_cmd(slot, slot_cmd, cmd_mask);
dbg("%s: SLOTCTRL %x write cmd %x\n",
__FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
@@ -570,21 +582,18 @@ static void hpc_set_green_led_on(struct slot *slot)
{
struct controller *ctrl = slot->ctrl;
u16 slot_cmd;
- u16 slot_ctrl;
- int rc = 0;
+ u16 cmd_mask;
DBG_ENTER_ROUTINE
- rc = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
- if (rc) {
- err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
- return;
+ slot_cmd = 0x0100;
+ cmd_mask = PWR_LED_CTRL;
+ if (!pciehp_poll_mode) {
+ slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ cmd_mask = cmd_mask | HP_INTR_ENABLE;
}
- slot_cmd = (slot_ctrl & ~PWR_LED_CTRL) | 0x0100;
- if (!pciehp_poll_mode)
- slot_cmd = slot_cmd | HP_INTR_ENABLE;
- pcie_write_cmd(slot, slot_cmd);
+ pcie_write_cmd(slot, slot_cmd, cmd_mask);
dbg("%s: SLOTCTRL %x write cmd %x\n",
__FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
@@ -596,22 +605,18 @@ static void hpc_set_green_led_off(struct slot *slot)
{
struct controller *ctrl = slot->ctrl;
u16 slot_cmd;
- u16 slot_ctrl;
- int rc = 0;
+ u16 cmd_mask;
DBG_ENTER_ROUTINE
- rc = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
- if (rc) {
- err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
- return;
+ slot_cmd = 0x0300;
+ cmd_mask = PWR_LED_CTRL;
+ if (!pciehp_poll_mode) {
+ slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ cmd_mask = cmd_mask | HP_INTR_ENABLE;
}
- slot_cmd = (slot_ctrl & ~PWR_LED_CTRL) | 0x0300;
-
- if (!pciehp_poll_mode)
- slot_cmd = slot_cmd | HP_INTR_ENABLE;
- pcie_write_cmd(slot, slot_cmd);
+ pcie_write_cmd(slot, slot_cmd, cmd_mask);
dbg("%s: SLOTCTRL %x write cmd %x\n",
__FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
@@ -623,22 +628,18 @@ static void hpc_set_green_led_blink(struct slot *slot)
{
struct controller *ctrl = slot->ctrl;
u16 slot_cmd;
- u16 slot_ctrl;
- int rc = 0;
+ u16 cmd_mask;
DBG_ENTER_ROUTINE
- rc = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
- if (rc) {
- err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
- return;
+ slot_cmd = 0x0200;
+ cmd_mask = PWR_LED_CTRL;
+ if (!pciehp_poll_mode) {
+ slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ cmd_mask = cmd_mask | HP_INTR_ENABLE;
}
- slot_cmd = (slot_ctrl & ~PWR_LED_CTRL) | 0x0200;
-
- if (!pciehp_poll_mode)
- slot_cmd = slot_cmd | HP_INTR_ENABLE;
- pcie_write_cmd(slot, slot_cmd);
+ pcie_write_cmd(slot, slot_cmd, cmd_mask);
dbg("%s: SLOTCTRL %x write cmd %x\n",
__FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
@@ -669,7 +670,8 @@ static int hpc_power_on_slot(struct slot * slot)
{
struct controller *ctrl = slot->ctrl;
u16 slot_cmd;
- u16 slot_ctrl, slot_status;
+ u16 cmd_mask;
+ u16 slot_status;
int retval = 0;
DBG_ENTER_ROUTINE
@@ -692,23 +694,23 @@ static int hpc_power_on_slot(struct slot * slot)
}
}
- retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
- if (retval) {
- err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
- return retval;
- }
-
- slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_ON;
-
+ slot_cmd = POWER_ON;
+ cmd_mask = PWR_CTRL;
/* Enable detection that we turned off at slot power-off time */
- if (!pciehp_poll_mode)
+ if (!pciehp_poll_mode) {
slot_cmd = slot_cmd |
PWR_FAULT_DETECT_ENABLE |
MRL_DETECT_ENABLE |
PRSN_DETECT_ENABLE |
HP_INTR_ENABLE;
+ cmd_mask = cmd_mask |
+ PWR_FAULT_DETECT_ENABLE |
+ MRL_DETECT_ENABLE |
+ PRSN_DETECT_ENABLE |
+ HP_INTR_ENABLE;
+ }
- retval = pcie_write_cmd(slot, slot_cmd);
+ retval = pcie_write_cmd(slot, slot_cmd, cmd_mask);
if (retval) {
err("%s: Write %x command failed!\n", __FUNCTION__, slot_cmd);
@@ -726,21 +728,15 @@ static int hpc_power_off_slot(struct slot * slot)
{
struct controller *ctrl = slot->ctrl;
u16 slot_cmd;
- u16 slot_ctrl;
+ u16 cmd_mask;
int retval = 0;
DBG_ENTER_ROUTINE
dbg("%s: slot->hp_slot %x\n", __FUNCTION__, slot->hp_slot);
- retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
- if (retval) {
- err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
- return retval;
- }
-
- slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_OFF;
-
+ slot_cmd = POWER_OFF;
+ cmd_mask = PWR_CTRL;
/*
* If we get MRL or presence detect interrupts now, the isr
* will notice the sticky power-fault bit too and issue power
@@ -748,14 +744,19 @@ static int hpc_power_off_slot(struct slot * slot)
* of command completions, since the power-fault bit remains on
* till the slot is powered on again.
*/
- if (!pciehp_poll_mode)
+ if (!pciehp_poll_mode) {
slot_cmd = (slot_cmd &
~PWR_FAULT_DETECT_ENABLE &
~MRL_DETECT_ENABLE &
~PRSN_DETECT_ENABLE) | HP_INTR_ENABLE;
+ cmd_mask = cmd_mask |
+ PWR_FAULT_DETECT_ENABLE |
+ MRL_DETECT_ENABLE |
+ PRSN_DETECT_ENABLE |
+ HP_INTR_ENABLE;
+ }
- retval = pcie_write_cmd(slot, slot_cmd);
-
+ retval = pcie_write_cmd(slot, slot_cmd, cmd_mask);
if (retval) {
err("%s: Write command failed!\n", __FUNCTION__);
return -1;
@@ -775,6 +776,7 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
u16 temp_word;
int hp_slot = 0; /* only 1 slot per PCI Express port */
int rc = 0;
+ unsigned long flags;
rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
if (rc) {
@@ -794,10 +796,12 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
dbg("%s: intr_loc %x\n", __FUNCTION__, intr_loc);
/* Mask Hot-plug Interrupt Enable */
if (!pciehp_poll_mode) {
+ spin_lock_irqsave(&ctrl->lock, flags);
rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
if (rc) {
err("%s: Cannot read SLOT_CTRL register\n",
__FUNCTION__);
+ spin_unlock_irqrestore(&ctrl->lock, flags);
return IRQ_NONE;
}
@@ -808,8 +812,10 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
if (rc) {
err("%s: Cannot write to SLOTCTRL register\n",
__FUNCTION__);
+ spin_unlock_irqrestore(&ctrl->lock, flags);
return IRQ_NONE;
}
+ spin_unlock_irqrestore(&ctrl->lock, flags);
rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
if (rc) {
@@ -859,10 +865,12 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
}
/* Unmask Hot-plug Interrupt Enable */
if (!pciehp_poll_mode) {
+ spin_lock_irqsave(&ctrl->lock, flags);
rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
if (rc) {
err("%s: Cannot read SLOTCTRL register\n",
__FUNCTION__);
+ spin_unlock_irqrestore(&ctrl->lock, flags);
return IRQ_NONE;
}
@@ -873,8 +881,10 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
if (rc) {
err("%s: Cannot write to SLOTCTRL register\n",
__FUNCTION__);
+ spin_unlock_irqrestore(&ctrl->lock, flags);
return IRQ_NONE;
}
+ spin_unlock_irqrestore(&ctrl->lock, flags);
rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
if (rc) {
@@ -1237,6 +1247,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
mutex_init(&ctrl->crit_sect);
mutex_init(&ctrl->ctrl_lock);
+ spin_lock_init(&ctrl->lock);
/* setup wait queue */
init_waitqueue_head(&ctrl->queue);
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index bb3c101c2c5..deb6b5e35fe 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -159,8 +159,8 @@ static void dlpar_pci_add_bus(struct device_node *dn)
/* Claim new bus resources */
pcibios_claim_one_bus(dev->bus);
- /* ioremap() for child bus, which may or may not succeed */
- remap_bus_range(dev->subordinate);
+ /* Map IO space for child bus, which may or may not succeed */
+ pcibios_map_io_space(dev->subordinate);
/* Add new devices to global lists. Register in proc, sysfs. */
pci_bus_add_devices(phb->bus);
@@ -390,7 +390,7 @@ int dlpar_remove_pci_slot(char *drc_name, struct device_node *dn)
} else
pcibios_remove_pci_devices(bus);
- if (unmap_bus_range(bus)) {
+ if (pcibios_unmap_io_space(bus)) {
printk(KERN_ERR "%s: failed to unmap bus range\n",
__FUNCTION__);
return -ERANGE;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 15:17:53 +0000