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path: root/drivers/pci/hotplug
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-rw-r--r--drivers/pci/hotplug/Kconfig9
-rw-r--r--drivers/pci/hotplug/Makefile1
-rw-r--r--drivers/pci/hotplug/cpci_hotplug_core.c1
-rw-r--r--drivers/pci/hotplug/cpqphp_core.c1
-rw-r--r--drivers/pci/hotplug/cpqphp_ctrl.c4
-rw-r--r--drivers/pci/hotplug/cpqphp_nvram.h5
-rw-r--r--drivers/pci/hotplug/ibmphp_res.c1
-rw-r--r--drivers/pci/hotplug/pciehp.h42
-rw-r--r--drivers/pci/hotplug/pciehp_core.c27
-rw-r--r--drivers/pci/hotplug/pciehp_ctrl.c45
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c104
-rw-r--r--drivers/pci/hotplug/pciehp_pci.c2
-rw-r--r--drivers/pci/hotplug/pnv_php.c59
-rw-r--r--drivers/pci/hotplug/rpadlpar_core.c5
-rw-r--r--drivers/pci/hotplug/rpaphp_core.c142
-rw-r--r--drivers/pci/hotplug/rpaphp_slot.c3
-rw-r--r--drivers/pci/hotplug/sgi_hotplug.c700
17 files changed, 259 insertions, 892 deletions
diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig
index e9f78eb390d2..e7b493c22bf3 100644
--- a/drivers/pci/hotplug/Kconfig
+++ b/drivers/pci/hotplug/Kconfig
@@ -147,15 +147,6 @@ config HOTPLUG_PCI_RPA_DLPAR
When in doubt, say N.
-config HOTPLUG_PCI_SGI
- tristate "SGI PCI Hotplug Support"
- depends on IA64_SGI_SN2 || IA64_GENERIC
- help
- Say Y here if you want to use the SGI Altix Hotplug
- Driver for PCI devices.
-
- When in doubt, say N.
-
config HOTPLUG_PCI_S390
bool "System z PCI Hotplug Support"
depends on S390 && 64BIT
diff --git a/drivers/pci/hotplug/Makefile b/drivers/pci/hotplug/Makefile
index 7e3331603714..5196983220df 100644
--- a/drivers/pci/hotplug/Makefile
+++ b/drivers/pci/hotplug/Makefile
@@ -18,7 +18,6 @@ obj-$(CONFIG_HOTPLUG_PCI_SHPC) += shpchp.o
obj-$(CONFIG_HOTPLUG_PCI_POWERNV) += pnv-php.o
obj-$(CONFIG_HOTPLUG_PCI_RPA) += rpaphp.o
obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR) += rpadlpar_io.o
-obj-$(CONFIG_HOTPLUG_PCI_SGI) += sgi_hotplug.o
obj-$(CONFIG_HOTPLUG_PCI_ACPI) += acpiphp.o
obj-$(CONFIG_HOTPLUG_PCI_S390) += s390_pci_hpc.o
diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c
index 603eadf3d965..d0559d2faf50 100644
--- a/drivers/pci/hotplug/cpci_hotplug_core.c
+++ b/drivers/pci/hotplug/cpci_hotplug_core.c
@@ -563,7 +563,6 @@ cleanup_slots(void)
}
cleanup_null:
up_write(&list_rwsem);
- return;
}
int
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 16bbb183695a..b8aacb41a83c 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -173,7 +173,6 @@ static void pci_print_IRQ_route(void)
dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot);
}
- return;
}
diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index b7f4e1f099d9..68de958a9be8 100644
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -1872,8 +1872,6 @@ static void interrupt_event_handler(struct controller *ctrl)
}
} /* End of FOR loop */
}
-
- return;
}
@@ -1943,8 +1941,6 @@ void cpqhp_pushbutton_thread(struct timer_list *t)
p_slot->state = STATIC_STATE;
}
-
- return;
}
diff --git a/drivers/pci/hotplug/cpqphp_nvram.h b/drivers/pci/hotplug/cpqphp_nvram.h
index 918ff8dbfe62..70e879b6a23f 100644
--- a/drivers/pci/hotplug/cpqphp_nvram.h
+++ b/drivers/pci/hotplug/cpqphp_nvram.h
@@ -16,10 +16,7 @@
#ifndef CONFIG_HOTPLUG_PCI_COMPAQ_NVRAM
-static inline void compaq_nvram_init(void __iomem *rom_start)
-{
- return;
-}
+static inline void compaq_nvram_init(void __iomem *rom_start) { }
static inline int compaq_nvram_load(void __iomem *rom_start, struct controller *ctrl)
{
diff --git a/drivers/pci/hotplug/ibmphp_res.c b/drivers/pci/hotplug/ibmphp_res.c
index 5e8caf7a4452..5c93aa14f0de 100644
--- a/drivers/pci/hotplug/ibmphp_res.c
+++ b/drivers/pci/hotplug/ibmphp_res.c
@@ -1941,6 +1941,7 @@ static int __init update_bridge_ranges(struct bus_node **bus)
break;
case PCI_HEADER_TYPE_BRIDGE:
function = 0x8;
+ /* fall through */
case PCI_HEADER_TYPE_MULTIBRIDGE:
/* We assume here that only 1 bus behind the bridge
TO DO: add functionality for several:
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 506e1d923a1f..654c972b8ea0 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -25,36 +25,21 @@
#include "../pcie/portdrv.h"
-#define MY_NAME "pciehp"
-
extern bool pciehp_poll_mode;
extern int pciehp_poll_time;
-extern bool pciehp_debug;
-
-#define dbg(format, arg...) \
-do { \
- if (pciehp_debug) \
- printk(KERN_DEBUG "%s: " format, MY_NAME, ## arg); \
-} while (0)
-#define err(format, arg...) \
- printk(KERN_ERR "%s: " format, MY_NAME, ## arg)
-#define info(format, arg...) \
- printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
-#define warn(format, arg...) \
- printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
+/*
+ * Set CONFIG_DYNAMIC_DEBUG=y and boot with 'dyndbg="file pciehp* +p"' to
+ * enable debug messages.
+ */
#define ctrl_dbg(ctrl, format, arg...) \
- do { \
- if (pciehp_debug) \
- dev_printk(KERN_DEBUG, &ctrl->pcie->device, \
- format, ## arg); \
- } while (0)
+ pci_dbg(ctrl->pcie->port, format, ## arg)
#define ctrl_err(ctrl, format, arg...) \
- dev_err(&ctrl->pcie->device, format, ## arg)
+ pci_err(ctrl->pcie->port, format, ## arg)
#define ctrl_info(ctrl, format, arg...) \
- dev_info(&ctrl->pcie->device, format, ## arg)
+ pci_info(ctrl->pcie->port, format, ## arg)
#define ctrl_warn(ctrl, format, arg...) \
- dev_warn(&ctrl->pcie->device, format, ## arg)
+ pci_warn(ctrl->pcie->port, format, ## arg)
#define SLOT_NAME_SIZE 10
@@ -125,9 +110,9 @@ struct controller {
*
* @OFF_STATE: slot is powered off, no subordinate devices are enumerated
* @BLINKINGON_STATE: slot will be powered on after the 5 second delay,
- * green led is blinking
+ * Power Indicator is blinking
* @BLINKINGOFF_STATE: slot will be powered off after the 5 second delay,
- * green led is blinking
+ * Power Indicator is blinking
* @POWERON_STATE: slot is currently powering on
* @POWEROFF_STATE: slot is currently powering off
* @ON_STATE: slot is powered on, subordinate devices have been enumerated
@@ -182,12 +167,11 @@ int pciehp_power_on_slot(struct controller *ctrl);
void pciehp_power_off_slot(struct controller *ctrl);
void pciehp_get_power_status(struct controller *ctrl, u8 *status);
-void pciehp_set_attention_status(struct controller *ctrl, u8 status);
+#define INDICATOR_NOOP -1 /* Leave indicator unchanged */
+void pciehp_set_indicators(struct controller *ctrl, int pwr, int attn);
+
void pciehp_get_latch_status(struct controller *ctrl, u8 *status);
int pciehp_query_power_fault(struct controller *ctrl);
-void pciehp_green_led_on(struct controller *ctrl);
-void pciehp_green_led_off(struct controller *ctrl);
-void pciehp_green_led_blink(struct controller *ctrl);
bool pciehp_card_present(struct controller *ctrl);
bool pciehp_card_present_or_link_active(struct controller *ctrl);
int pciehp_check_link_status(struct controller *ctrl);
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index fc5366b50e95..b3122c151b80 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -17,6 +17,9 @@
* Dely Sy <[email protected]>"
*/
+#define pr_fmt(fmt) "pciehp: " fmt
+#define dev_fmt pr_fmt
+
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/slab.h>
@@ -27,7 +30,6 @@
#include "../pci.h"
/* Global variables */
-bool pciehp_debug;
bool pciehp_poll_mode;
int pciehp_poll_time;
@@ -35,15 +37,11 @@ int pciehp_poll_time;
* not really modular, but the easiest way to keep compat with existing
* bootargs behaviour is to continue using module_param here.
*/
-module_param(pciehp_debug, bool, 0644);
module_param(pciehp_poll_mode, bool, 0644);
module_param(pciehp_poll_time, int, 0644);
-MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
-#define PCIE_MODULE_NAME "pciehp"
-
static int set_attention_status(struct hotplug_slot *slot, u8 value);
static int get_power_status(struct hotplug_slot *slot, u8 *value);
static int get_latch_status(struct hotplug_slot *slot, u8 *value);
@@ -97,15 +95,20 @@ static void cleanup_slot(struct controller *ctrl)
}
/*
- * set_attention_status - Turns the Amber LED for a slot on, off or blink
+ * set_attention_status - Turns the Attention Indicator on, off or blinking
*/
static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
{
struct controller *ctrl = to_ctrl(hotplug_slot);
struct pci_dev *pdev = ctrl->pcie->port;
+ if (status)
+ status <<= PCI_EXP_SLTCTL_ATTN_IND_SHIFT;
+ else
+ status = PCI_EXP_SLTCTL_ATTN_IND_OFF;
+
pci_config_pm_runtime_get(pdev);
- pciehp_set_attention_status(ctrl, status);
+ pciehp_set_indicators(ctrl, INDICATOR_NOOP, status);
pci_config_pm_runtime_put(pdev);
return 0;
}
@@ -182,14 +185,14 @@ static int pciehp_probe(struct pcie_device *dev)
if (!dev->port->subordinate) {
/* Can happen if we run out of bus numbers during probe */
- dev_err(&dev->device,
+ pci_err(dev->port,
"Hotplug bridge without secondary bus, ignoring\n");
return -ENODEV;
}
ctrl = pcie_init(dev);
if (!ctrl) {
- dev_err(&dev->device, "Controller initialization failed\n");
+ pci_err(dev->port, "Controller initialization failed\n");
return -ENODEV;
}
set_service_data(dev, ctrl);
@@ -307,7 +310,7 @@ static int pciehp_runtime_resume(struct pcie_device *dev)
#endif /* PM */
static struct pcie_port_service_driver hpdriver_portdrv = {
- .name = PCIE_MODULE_NAME,
+ .name = "pciehp",
.port_type = PCIE_ANY_PORT,
.service = PCIE_PORT_SERVICE_HP,
@@ -328,9 +331,9 @@ int __init pcie_hp_init(void)
int retval = 0;
retval = pcie_port_service_register(&hpdriver_portdrv);
- dbg("pcie_port_service_register = %d\n", retval);
+ pr_debug("pcie_port_service_register = %d\n", retval);
if (retval)
- dbg("Failure to register service\n");
+ pr_debug("Failure to register service\n");
return retval;
}
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 3f3df4c29f6e..21af7b16d7a4 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -13,6 +13,8 @@
*
*/
+#define dev_fmt(fmt) "pciehp: " fmt
+
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pm_runtime.h>
@@ -28,7 +30,10 @@
static void set_slot_off(struct controller *ctrl)
{
- /* turn off slot, turn on Amber LED, turn off Green LED if supported*/
+ /*
+ * Turn off slot, turn on attention indicator, turn off power
+ * indicator
+ */
if (POWER_CTRL(ctrl)) {
pciehp_power_off_slot(ctrl);
@@ -40,8 +45,8 @@ static void set_slot_off(struct controller *ctrl)
msleep(1000);
}
- pciehp_green_led_off(ctrl);
- pciehp_set_attention_status(ctrl, 1);
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
+ PCI_EXP_SLTCTL_ATTN_IND_ON);
}
/**
@@ -63,7 +68,8 @@ static int board_added(struct controller *ctrl)
return retval;
}
- pciehp_green_led_blink(ctrl);
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK,
+ INDICATOR_NOOP);
/* Check link training status */
retval = pciehp_check_link_status(ctrl);
@@ -88,8 +94,8 @@ static int board_added(struct controller *ctrl)
}
}
- pciehp_green_led_on(ctrl);
- pciehp_set_attention_status(ctrl, 0);
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON,
+ PCI_EXP_SLTCTL_ATTN_IND_OFF);
return 0;
err_exit:
@@ -98,7 +104,7 @@ err_exit:
}
/**
- * remove_board - Turns off slot and LEDs
+ * remove_board - Turn off slot and Power Indicator
* @ctrl: PCIe hotplug controller where board is being removed
* @safe_removal: whether the board is safely removed (versus surprise removed)
*/
@@ -115,10 +121,14 @@ static void remove_board(struct controller *ctrl, bool safe_removal)
* removed from the slot/adapter.
*/
msleep(1000);
+
+ /* Ignore link or presence changes caused by power off */
+ atomic_and(~(PCI_EXP_SLTSTA_DLLSC | PCI_EXP_SLTSTA_PDC),
+ &ctrl->pending_events);
}
- /* turn off Green LED */
- pciehp_green_led_off(ctrl);
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
+ INDICATOR_NOOP);
}
static int pciehp_enable_slot(struct controller *ctrl);
@@ -165,9 +175,9 @@ void pciehp_handle_button_press(struct controller *ctrl)
ctrl_info(ctrl, "Slot(%s) Powering on due to button press\n",
slot_name(ctrl));
}
- /* blink green LED and turn off amber */
- pciehp_green_led_blink(ctrl);
- pciehp_set_attention_status(ctrl, 0);
+ /* blink power indicator and turn off attention */
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK,
+ PCI_EXP_SLTCTL_ATTN_IND_OFF);
schedule_delayed_work(&ctrl->button_work, 5 * HZ);
break;
case BLINKINGOFF_STATE:
@@ -181,12 +191,13 @@ void pciehp_handle_button_press(struct controller *ctrl)
cancel_delayed_work(&ctrl->button_work);
if (ctrl->state == BLINKINGOFF_STATE) {
ctrl->state = ON_STATE;
- pciehp_green_led_on(ctrl);
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON,
+ PCI_EXP_SLTCTL_ATTN_IND_OFF);
} else {
ctrl->state = OFF_STATE;
- pciehp_green_led_off(ctrl);
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
+ PCI_EXP_SLTCTL_ATTN_IND_OFF);
}
- pciehp_set_attention_status(ctrl, 0);
ctrl_info(ctrl, "Slot(%s): Action canceled due to button press\n",
slot_name(ctrl));
break;
@@ -304,7 +315,9 @@ static int pciehp_enable_slot(struct controller *ctrl)
pm_runtime_get_sync(&ctrl->pcie->port->dev);
ret = __pciehp_enable_slot(ctrl);
if (ret && ATTN_BUTTN(ctrl))
- pciehp_green_led_off(ctrl); /* may be blinking */
+ /* may be blinking */
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
+ INDICATOR_NOOP);
pm_runtime_put(&ctrl->pcie->port->dev);
mutex_lock(&ctrl->state_lock);
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 6a2365cd794e..1a522c1c4177 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -12,6 +12,8 @@
* Send feedback to <[email protected]>,<[email protected]>
*/
+#define dev_fmt(fmt) "pciehp: " fmt
+
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/jiffies.h>
@@ -46,7 +48,7 @@ static inline int pciehp_request_irq(struct controller *ctrl)
/* Installs the interrupt handler */
retval = request_threaded_irq(irq, pciehp_isr, pciehp_ist,
- IRQF_SHARED, MY_NAME, ctrl);
+ IRQF_SHARED, "pciehp", ctrl);
if (retval)
ctrl_err(ctrl, "Cannot get irq %d for the hotplug controller\n",
irq);
@@ -232,8 +234,8 @@ static bool pci_bus_check_dev(struct pci_bus *bus, int devfn)
delay -= step;
} while (delay > 0);
- if (count > 1 && pciehp_debug)
- printk(KERN_DEBUG "pci %04x:%02x:%02x.%d id reading try %d times with interval %d ms to get %08x\n",
+ if (count > 1)
+ pr_debug("pci %04x:%02x:%02x.%d id reading try %d times with interval %d ms to get %08x\n",
pci_domain_nr(bus), bus->number, PCI_SLOT(devfn),
PCI_FUNC(devfn), count, step, l);
@@ -416,65 +418,40 @@ int pciehp_set_raw_indicator_status(struct hotplug_slot *hotplug_slot,
return 0;
}
-void pciehp_set_attention_status(struct controller *ctrl, u8 value)
+/**
+ * pciehp_set_indicators() - set attention indicator, power indicator, or both
+ * @ctrl: PCIe hotplug controller
+ * @pwr: one of:
+ * PCI_EXP_SLTCTL_PWR_IND_ON
+ * PCI_EXP_SLTCTL_PWR_IND_BLINK
+ * PCI_EXP_SLTCTL_PWR_IND_OFF
+ * @attn: one of:
+ * PCI_EXP_SLTCTL_ATTN_IND_ON
+ * PCI_EXP_SLTCTL_ATTN_IND_BLINK
+ * PCI_EXP_SLTCTL_ATTN_IND_OFF
+ *
+ * Either @pwr or @attn can also be INDICATOR_NOOP to leave that indicator
+ * unchanged.
+ */
+void pciehp_set_indicators(struct controller *ctrl, int pwr, int attn)
{
- u16 slot_cmd;
+ u16 cmd = 0, mask = 0;
- if (!ATTN_LED(ctrl))
- return;
-
- switch (value) {
- case 0: /* turn off */
- slot_cmd = PCI_EXP_SLTCTL_ATTN_IND_OFF;
- break;
- case 1: /* turn on */
- slot_cmd = PCI_EXP_SLTCTL_ATTN_IND_ON;
- break;
- case 2: /* turn blink */
- slot_cmd = PCI_EXP_SLTCTL_ATTN_IND_BLINK;
- break;
- default:
- return;
+ if (PWR_LED(ctrl) && pwr != INDICATOR_NOOP) {
+ cmd |= (pwr & PCI_EXP_SLTCTL_PIC);
+ mask |= PCI_EXP_SLTCTL_PIC;
}
- pcie_write_cmd_nowait(ctrl, slot_cmd, PCI_EXP_SLTCTL_AIC);
- ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
- pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
-}
-
-void pciehp_green_led_on(struct controller *ctrl)
-{
- if (!PWR_LED(ctrl))
- return;
-
- pcie_write_cmd_nowait(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON,
- PCI_EXP_SLTCTL_PIC);
- ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
- pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL,
- PCI_EXP_SLTCTL_PWR_IND_ON);
-}
-
-void pciehp_green_led_off(struct controller *ctrl)
-{
- if (!PWR_LED(ctrl))
- return;
-
- pcie_write_cmd_nowait(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
- PCI_EXP_SLTCTL_PIC);
- ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
- pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL,
- PCI_EXP_SLTCTL_PWR_IND_OFF);
-}
-void pciehp_green_led_blink(struct controller *ctrl)
-{
- if (!PWR_LED(ctrl))
- return;
+ if (ATTN_LED(ctrl) && attn != INDICATOR_NOOP) {
+ cmd |= (attn & PCI_EXP_SLTCTL_AIC);
+ mask |= PCI_EXP_SLTCTL_AIC;
+ }
- pcie_write_cmd_nowait(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK,
- PCI_EXP_SLTCTL_PIC);
- ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
- pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL,
- PCI_EXP_SLTCTL_PWR_IND_BLINK);
+ if (cmd) {
+ pcie_write_cmd_nowait(ctrl, cmd, mask);
+ ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+ pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, cmd);
+ }
}
int pciehp_power_on_slot(struct controller *ctrl)
@@ -636,8 +613,8 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id)
if ((events & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) {
ctrl->power_fault_detected = 1;
ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(ctrl));
- pciehp_set_attention_status(ctrl, 1);
- pciehp_green_led_off(ctrl);
+ pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
+ PCI_EXP_SLTCTL_ATTN_IND_ON);
}
/*
@@ -822,14 +799,11 @@ static inline void dbg_ctrl(struct controller *ctrl)
struct pci_dev *pdev = ctrl->pcie->port;
u16 reg16;
- if (!pciehp_debug)
- return;
-
- ctrl_info(ctrl, "Slot Capabilities : 0x%08x\n", ctrl->slot_cap);
+ ctrl_dbg(ctrl, "Slot Capabilities : 0x%08x\n", ctrl->slot_cap);
pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &reg16);
- ctrl_info(ctrl, "Slot Status : 0x%04x\n", reg16);
+ ctrl_dbg(ctrl, "Slot Status : 0x%04x\n", reg16);
pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &reg16);
- ctrl_info(ctrl, "Slot Control : 0x%04x\n", reg16);
+ ctrl_dbg(ctrl, "Slot Control : 0x%04x\n", reg16);
}
#define FLAG(x, y) (((x) & (y)) ? '+' : '-')
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c
index b9c1396db6fe..d17f3bf36f70 100644
--- a/drivers/pci/hotplug/pciehp_pci.c
+++ b/drivers/pci/hotplug/pciehp_pci.c
@@ -13,6 +13,8 @@
*
*/
+#define dev_fmt(fmt) "pciehp: " fmt
+
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
diff --git a/drivers/pci/hotplug/pnv_php.c b/drivers/pci/hotplug/pnv_php.c
index 6758fd7c382e..d7b2b47bc33e 100644
--- a/drivers/pci/hotplug/pnv_php.c
+++ b/drivers/pci/hotplug/pnv_php.c
@@ -419,9 +419,21 @@ static int pnv_php_get_attention_state(struct hotplug_slot *slot, u8 *state)
static int pnv_php_set_attention_state(struct hotplug_slot *slot, u8 state)
{
struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);
+ struct pci_dev *bridge = php_slot->pdev;
+ u16 new, mask;
- /* FIXME: Make it real once firmware supports it */
php_slot->attention_state = state;
+ if (!bridge)
+ return 0;
+
+ mask = PCI_EXP_SLTCTL_AIC;
+
+ if (state)
+ new = PCI_EXP_SLTCTL_ATTN_IND_ON;
+ else
+ new = PCI_EXP_SLTCTL_ATTN_IND_OFF;
+
+ pcie_capability_clear_and_set_word(bridge, PCI_EXP_SLTCTL, mask, new);
return 0;
}
@@ -511,6 +523,37 @@ scan:
return 0;
}
+static int pnv_php_reset_slot(struct hotplug_slot *slot, int probe)
+{
+ struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);
+ struct pci_dev *bridge = php_slot->pdev;
+ uint16_t sts;
+
+ /*
+ * The CAPI folks want pnv_php to drive OpenCAPI slots
+ * which don't have a bridge. Only claim to support
+ * reset_slot() if we have a bridge device (for now...)
+ */
+ if (probe)
+ return !bridge;
+
+ /* mask our interrupt while resetting the bridge */
+ if (php_slot->irq > 0)
+ disable_irq(php_slot->irq);
+
+ pci_bridge_secondary_bus_reset(bridge);
+
+ /* clear any state changes that happened due to the reset */
+ pcie_capability_read_word(php_slot->pdev, PCI_EXP_SLTSTA, &sts);
+ sts &= (PCI_EXP_SLTSTA_PDC | PCI_EXP_SLTSTA_DLLSC);
+ pcie_capability_write_word(php_slot->pdev, PCI_EXP_SLTSTA, sts);
+
+ if (php_slot->irq > 0)
+ enable_irq(php_slot->irq);
+
+ return 0;
+}
+
static int pnv_php_enable_slot(struct hotplug_slot *slot)
{
struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);
@@ -548,6 +591,7 @@ static const struct hotplug_slot_ops php_slot_ops = {
.set_attention_status = pnv_php_set_attention_state,
.enable_slot = pnv_php_enable_slot,
.disable_slot = pnv_php_disable_slot,
+ .reset_slot = pnv_php_reset_slot,
};
static void pnv_php_release(struct pnv_php_slot *php_slot)
@@ -721,6 +765,12 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data)
pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &sts);
sts &= (PCI_EXP_SLTSTA_PDC | PCI_EXP_SLTSTA_DLLSC);
pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, sts);
+
+ pci_dbg(pdev, "PCI slot [%s]: HP int! DLAct: %d, PresDet: %d\n",
+ php_slot->name,
+ !!(sts & PCI_EXP_SLTSTA_DLLSC),
+ !!(sts & PCI_EXP_SLTSTA_PDC));
+
if (sts & PCI_EXP_SLTSTA_DLLSC) {
pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lsts);
added = !!(lsts & PCI_EXP_LNKSTA_DLLLA);
@@ -735,6 +785,7 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data)
added = !!(presence == OPAL_PCI_SLOT_PRESENT);
} else {
+ pci_dbg(pdev, "PCI slot [%s]: Spurious IRQ?\n", php_slot->name);
return IRQ_NONE;
}
@@ -955,6 +1006,9 @@ static int __init pnv_php_init(void)
for_each_compatible_node(dn, NULL, "ibm,ioda2-phb")
pnv_php_register(dn);
+ for_each_compatible_node(dn, NULL, "ibm,ioda3-phb")
+ pnv_php_register(dn);
+
return 0;
}
@@ -964,6 +1018,9 @@ static void __exit pnv_php_exit(void)
for_each_compatible_node(dn, NULL, "ibm,ioda2-phb")
pnv_php_unregister(dn);
+
+ for_each_compatible_node(dn, NULL, "ibm,ioda3-phb")
+ pnv_php_unregister(dn);
}
module_init(pnv_php_init);
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index e2356a9c7088..977946e4e613 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -51,6 +51,7 @@ static struct device_node *find_vio_slot_node(char *drc_name)
if (rc == 0)
break;
}
+ of_node_put(parent);
return dn;
}
@@ -71,6 +72,7 @@ static struct device_node *find_php_slot_pci_node(char *drc_name,
return np;
}
+/* Returns a device_node with its reference count incremented */
static struct device_node *find_dlpar_node(char *drc_name, int *node_type)
{
struct device_node *dn;
@@ -306,6 +308,7 @@ int dlpar_add_slot(char *drc_name)
rc = dlpar_add_phb(drc_name, dn);
break;
}
+ of_node_put(dn);
printk(KERN_INFO "%s: slot %s added\n", DLPAR_MODULE_NAME, drc_name);
exit:
@@ -439,6 +442,7 @@ int dlpar_remove_slot(char *drc_name)
rc = dlpar_remove_pci_slot(drc_name, dn);
break;
}
+ of_node_put(dn);
vm_unmap_aliases();
printk(KERN_INFO "%s: slot %s removed\n", DLPAR_MODULE_NAME, drc_name);
@@ -469,7 +473,6 @@ int __init rpadlpar_io_init(void)
void rpadlpar_io_exit(void)
{
dlpar_sysfs_exit();
- return;
}
module_init(rpadlpar_io_init);
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index bcd5d357ca23..951f7f216fb3 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -154,11 +154,11 @@ static enum pci_bus_speed get_max_bus_speed(struct slot *slot)
return speed;
}
-static int get_children_props(struct device_node *dn, const int **drc_indexes,
- const int **drc_names, const int **drc_types,
- const int **drc_power_domains)
+static int get_children_props(struct device_node *dn, const __be32 **drc_indexes,
+ const __be32 **drc_names, const __be32 **drc_types,
+ const __be32 **drc_power_domains)
{
- const int *indexes, *names, *types, *domains;
+ const __be32 *indexes, *names, *types, *domains;
indexes = of_get_property(dn, "ibm,drc-indexes", NULL);
names = of_get_property(dn, "ibm,drc-names", NULL);
@@ -194,8 +194,8 @@ static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name,
char *drc_type, unsigned int my_index)
{
char *name_tmp, *type_tmp;
- const int *indexes, *names;
- const int *types, *domains;
+ const __be32 *indexes, *names;
+ const __be32 *types, *domains;
int i, rc;
rc = get_children_props(dn->parent, &indexes, &names, &types, &domains);
@@ -208,7 +208,7 @@ static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name,
/* Iterate through parent properties, looking for my-drc-index */
for (i = 0; i < be32_to_cpu(indexes[0]); i++) {
- if ((unsigned int) indexes[i + 1] == my_index)
+ if (be32_to_cpu(indexes[i + 1]) == my_index)
break;
name_tmp += (strlen(name_tmp) + 1);
@@ -230,7 +230,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
struct of_drc_info drc;
const __be32 *value;
char cell_drc_name[MAX_DRC_NAME_LEN];
- int j, fndit;
+ int j;
info = of_find_property(dn->parent, "ibm,drc-info", NULL);
if (info == NULL)
@@ -239,23 +239,22 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
value = of_prop_next_u32(info, NULL, &entries);
if (!value)
return -EINVAL;
+ else
+ value++;
for (j = 0; j < entries; j++) {
of_read_drc_info_cell(&info, &value, &drc);
/* Should now know end of current entry */
- if (my_index > drc.last_drc_index)
- continue;
-
- fndit = 1;
- break;
+ /* Found it */
+ if (my_index >= drc.drc_index_start && my_index <= drc.last_drc_index) {
+ int index = my_index - drc.drc_index_start;
+ sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
+ drc.drc_name_suffix_start + index);
+ break;
+ }
}
- /* Found it */
-
- if (fndit)
- sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
- my_index);
if (((drc_name == NULL) ||
(drc_name && !strcmp(drc_name, cell_drc_name))) &&
@@ -269,7 +268,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
char *drc_type)
{
- const unsigned int *my_index;
+ const __be32 *my_index;
my_index = of_get_property(dn, "ibm,my-drc-index", NULL);
if (!my_index) {
@@ -277,12 +276,12 @@ int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
return -EINVAL;
}
- if (firmware_has_feature(FW_FEATURE_DRC_INFO))
+ if (of_find_property(dn->parent, "ibm,drc-info", NULL))
return rpaphp_check_drc_props_v2(dn, drc_name, drc_type,
- *my_index);
+ be32_to_cpu(*my_index));
else
return rpaphp_check_drc_props_v1(dn, drc_name, drc_type,
- *my_index);
+ be32_to_cpu(*my_index));
}
EXPORT_SYMBOL_GPL(rpaphp_check_drc_props);
@@ -313,10 +312,11 @@ static int is_php_type(char *drc_type)
* for built-in pci slots (even when the built-in slots are
* dlparable.)
*/
-static int is_php_dn(struct device_node *dn, const int **indexes,
- const int **names, const int **types, const int **power_domains)
+static int is_php_dn(struct device_node *dn, const __be32 **indexes,
+ const __be32 **names, const __be32 **types,
+ const __be32 **power_domains)
{
- const int *drc_types;
+ const __be32 *drc_types;
int rc;
rc = get_children_props(dn, indexes, names, &drc_types, power_domains);
@@ -330,33 +330,55 @@ static int is_php_dn(struct device_node *dn, const int **indexes,
return 1;
}
-/**
- * rpaphp_add_slot -- declare a hotplug slot to the hotplug subsystem.
- * @dn: device node of slot
- *
- * This subroutine will register a hotpluggable slot with the
- * PCI hotplug infrastructure. This routine is typically called
- * during boot time, if the hotplug slots are present at boot time,
- * or is called later, by the dlpar add code, if the slot is
- * being dynamically added during runtime.
- *
- * If the device node points at an embedded (built-in) slot, this
- * routine will just return without doing anything, since embedded
- * slots cannot be hotplugged.
- *
- * To remove a slot, it suffices to call rpaphp_deregister_slot().
- */
-int rpaphp_add_slot(struct device_node *dn)
+static int rpaphp_drc_info_add_slot(struct device_node *dn)
{
struct slot *slot;
+ struct property *info;
+ struct of_drc_info drc;
+ char drc_name[MAX_DRC_NAME_LEN];
+ const __be32 *cur;
+ u32 count;
int retval = 0;
- int i;
- const int *indexes, *names, *types, *power_domains;
- char *name, *type;
- if (!dn->name || strcmp(dn->name, "pci"))
+ info = of_find_property(dn, "ibm,drc-info", NULL);
+ if (!info)
return 0;
+ cur = of_prop_next_u32(info, NULL, &count);
+ if (cur)
+ cur++;
+ else
+ return 0;
+
+ of_read_drc_info_cell(&info, &cur, &drc);
+ if (!is_php_type(drc.drc_type))
+ return 0;
+
+ sprintf(drc_name, "%s%d", drc.drc_name_prefix, drc.drc_name_suffix_start);
+
+ slot = alloc_slot_struct(dn, drc.drc_index_start, drc_name, drc.drc_power_domain);
+ if (!slot)
+ return -ENOMEM;
+
+ slot->type = simple_strtoul(drc.drc_type, NULL, 10);
+ retval = rpaphp_enable_slot(slot);
+ if (!retval)
+ retval = rpaphp_register_slot(slot);
+
+ if (retval)
+ dealloc_slot_struct(slot);
+
+ return retval;
+}
+
+static int rpaphp_drc_add_slot(struct device_node *dn)
+{
+ struct slot *slot;
+ int retval = 0;
+ int i;
+ const __be32 *indexes, *names, *types, *power_domains;
+ char *name, *type;
+
/* If this is not a hotplug slot, return without doing anything. */
if (!is_php_dn(dn, &indexes, &names, &types, &power_domains))
return 0;
@@ -395,6 +417,33 @@ int rpaphp_add_slot(struct device_node *dn)
/* XXX FIXME: reports a failure only if last entry in loop failed */
return retval;
}
+
+/**
+ * rpaphp_add_slot -- declare a hotplug slot to the hotplug subsystem.
+ * @dn: device node of slot
+ *
+ * This subroutine will register a hotpluggable slot with the
+ * PCI hotplug infrastructure. This routine is typically called
+ * during boot time, if the hotplug slots are present at boot time,
+ * or is called later, by the dlpar add code, if the slot is
+ * being dynamically added during runtime.
+ *
+ * If the device node points at an embedded (built-in) slot, this
+ * routine will just return without doing anything, since embedded
+ * slots cannot be hotplugged.
+ *
+ * To remove a slot, it suffices to call rpaphp_deregister_slot().
+ */
+int rpaphp_add_slot(struct device_node *dn)
+{
+ if (!dn->name || strcmp(dn->name, "pci"))
+ return 0;
+
+ if (of_find_property(dn, "ibm,drc-info", NULL))
+ return rpaphp_drc_info_add_slot(dn);
+ else
+ return rpaphp_drc_add_slot(dn);
+}
EXPORT_SYMBOL_GPL(rpaphp_add_slot);
static void __exit cleanup_slots(void)
@@ -412,7 +461,6 @@ static void __exit cleanup_slots(void)
pci_hp_deregister(&slot->hotplug_slot);
dealloc_slot_struct(slot);
}
- return;
}
static int __init rpaphp_init(void)
diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c
index 5282aa3e33c5..93b4a945c55d 100644
--- a/drivers/pci/hotplug/rpaphp_slot.c
+++ b/drivers/pci/hotplug/rpaphp_slot.c
@@ -21,6 +21,7 @@
/* free up the memory used by a slot */
void dealloc_slot_struct(struct slot *slot)
{
+ of_node_put(slot->dn);
kfree(slot->name);
kfree(slot);
}
@@ -36,7 +37,7 @@ struct slot *alloc_slot_struct(struct device_node *dn,
slot->name = kstrdup(drc_name, GFP_KERNEL);
if (!slot->name)
goto error_slot;
- slot->dn = dn;
+ slot->dn = of_node_get(dn);
slot->index = drc_index;
slot->power_domain = power_domain;
slot->hotplug_slot.ops = &rpaphp_hotplug_slot_ops;
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
deleted file mode 100644
index 231f5bdd3d2d..000000000000
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ /dev/null
@@ -1,700 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2005-2006 Silicon Graphics, Inc. All rights reserved.
- *
- * This work was based on the 2.4/2.6 kernel development by Dick Reigner.
- * Work to add BIOS PROM support was completed by Mike Habeck.
- */
-
-#include <linux/acpi.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/pci_hotplug.h>
-#include <linux/proc_fs.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/mutex.h>
-
-#include <asm/sn/addrs.h>
-#include <asm/sn/geo.h>
-#include <asm/sn/l1.h>
-#include <asm/sn/module.h>
-#include <asm/sn/pcibr_provider.h>
-#include <asm/sn/pcibus_provider_defs.h>
-#include <asm/sn/pcidev.h>
-#include <asm/sn/sn_feature_sets.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/types.h>
-#include <asm/sn/acpi.h>
-
-#include "../pci.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("SGI ([email protected], [email protected], [email protected])");
-MODULE_DESCRIPTION("SGI Altix Hot Plug PCI Controller Driver");
-
-
-/* SAL call error codes. Keep in sync with prom header io/include/pcibr.h */
-#define PCI_SLOT_ALREADY_UP 2 /* slot already up */
-#define PCI_SLOT_ALREADY_DOWN 3 /* slot already down */
-#define PCI_L1_ERR 7 /* L1 console command error */
-#define PCI_EMPTY_33MHZ 15 /* empty 33 MHz bus */
-
-
-#define PCIIO_ASIC_TYPE_TIOCA 4
-#define PCI_L1_QSIZE 128 /* our L1 message buffer size */
-#define SN_MAX_HP_SLOTS 32 /* max hotplug slots */
-#define SN_SLOT_NAME_SIZE 33 /* size of name string */
-
-/* internal list head */
-static struct list_head sn_hp_list;
-
-/* hotplug_slot struct's private pointer */
-struct slot {
- int device_num;
- struct pci_bus *pci_bus;
- /* this struct for glue internal only */
- struct hotplug_slot hotplug_slot;
- struct list_head hp_list;
- char physical_path[SN_SLOT_NAME_SIZE];
-};
-
-struct pcibr_slot_enable_resp {
- int resp_sub_errno;
- char resp_l1_msg[PCI_L1_QSIZE + 1];
-};
-
-struct pcibr_slot_disable_resp {
- int resp_sub_errno;
- char resp_l1_msg[PCI_L1_QSIZE + 1];
-};
-
-enum sn_pci_req_e {
- PCI_REQ_SLOT_ELIGIBLE,
- PCI_REQ_SLOT_DISABLE
-};
-
-static int enable_slot(struct hotplug_slot *slot);
-static int disable_slot(struct hotplug_slot *slot);
-static inline int get_power_status(struct hotplug_slot *slot, u8 *value);
-
-static const struct hotplug_slot_ops sn_hotplug_slot_ops = {
- .enable_slot = enable_slot,
- .disable_slot = disable_slot,
- .get_power_status = get_power_status,
-};
-
-static DEFINE_MUTEX(sn_hotplug_mutex);
-
-static struct slot *to_slot(struct hotplug_slot *bss_hotplug_slot)
-{
- return container_of(bss_hotplug_slot, struct slot, hotplug_slot);
-}
-
-static ssize_t path_show(struct pci_slot *pci_slot, char *buf)
-{
- int retval = -ENOENT;
- struct slot *slot = to_slot(pci_slot->hotplug);
-
- if (!slot)
- return retval;
-
- retval = sprintf(buf, "%s\n", slot->physical_path);
- return retval;
-}
-
-static struct pci_slot_attribute sn_slot_path_attr = __ATTR_RO(path);
-
-static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
-{
- struct pcibus_info *pcibus_info;
- u16 busnum, segment, ioboard_type;
-
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
-
- /* Check to see if this is a valid slot on 'pci_bus' */
- if (!(pcibus_info->pbi_valid_devices & (1 << device)))
- return -EPERM;
-
- ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
- busnum = pcibus_info->pbi_buscommon.bs_persist_busnum;
- segment = pci_domain_nr(pci_bus) & 0xf;
-
- /* Do not allow hotplug operations on base I/O cards */
- if ((ioboard_type == L1_BRICKTYPE_IX ||
- ioboard_type == L1_BRICKTYPE_IA) &&
- (segment == 1 && busnum == 0 && device != 1))
- return -EPERM;
-
- return 1;
-}
-
-static int sn_pci_bus_valid(struct pci_bus *pci_bus)
-{
- struct pcibus_info *pcibus_info;
- u32 asic_type;
- u16 ioboard_type;
-
- /* Don't register slots hanging off the TIOCA bus */
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
- asic_type = pcibus_info->pbi_buscommon.bs_asic_type;
- if (asic_type == PCIIO_ASIC_TYPE_TIOCA)
- return -EPERM;
-
- /* Only register slots in I/O Bricks that support hotplug */
- ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
- switch (ioboard_type) {
- case L1_BRICKTYPE_IX:
- case L1_BRICKTYPE_PX:
- case L1_BRICKTYPE_IA:
- case L1_BRICKTYPE_PA:
- case L1_BOARDTYPE_PCIX3SLOT:
- return 1;
- break;
- default:
- return -EPERM;
- break;
- }
-
- return -EIO;
-}
-
-static int sn_hp_slot_private_alloc(struct hotplug_slot **bss_hotplug_slot,
- struct pci_bus *pci_bus, int device,
- char *name)
-{
- struct pcibus_info *pcibus_info;
- struct slot *slot;
-
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
-
- slot = kzalloc(sizeof(*slot), GFP_KERNEL);
- if (!slot)
- return -ENOMEM;
-
- slot->device_num = device;
- slot->pci_bus = pci_bus;
- sprintf(name, "%04x:%02x:%02x",
- pci_domain_nr(pci_bus),
- ((u16)pcibus_info->pbi_buscommon.bs_persist_busnum),
- device + 1);
-
- sn_generate_path(pci_bus, slot->physical_path);
-
- list_add(&slot->hp_list, &sn_hp_list);
- *bss_hotplug_slot = &slot->hotplug_slot;
-
- return 0;
-}
-
-static struct hotplug_slot *sn_hp_destroy(void)
-{
- struct slot *slot;
- struct pci_slot *pci_slot;
- struct hotplug_slot *bss_hotplug_slot = NULL;
-
- list_for_each_entry(slot, &sn_hp_list, hp_list) {
- bss_hotplug_slot = &slot->hotplug_slot;
- pci_slot = bss_hotplug_slot->pci_slot;
- list_del(&slot->hp_list);
- sysfs_remove_file(&pci_slot->kobj,
- &sn_slot_path_attr.attr);
- break;
- }
- return bss_hotplug_slot;
-}
-
-static void sn_bus_free_data(struct pci_dev *dev)
-{
- struct pci_bus *subordinate_bus;
- struct pci_dev *child;
-
- /* Recursively clean up sn_irq_info structs */
- if (dev->subordinate) {
- subordinate_bus = dev->subordinate;
- list_for_each_entry(child, &subordinate_bus->devices, bus_list)
- sn_bus_free_data(child);
- }
- /*
- * Some drivers may use dma accesses during the
- * driver remove function. We release the sysdata
- * areas after the driver remove functions have
- * been called.
- */
- sn_bus_store_sysdata(dev);
- sn_pci_unfixup_slot(dev);
-}
-
-static int sn_slot_enable(struct hotplug_slot *bss_hotplug_slot,
- int device_num, char **ssdt)
-{
- struct slot *slot = to_slot(bss_hotplug_slot);
- struct pcibus_info *pcibus_info;
- struct pcibr_slot_enable_resp resp;
- int rc;
-
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
-
- /*
- * Power-on and initialize the slot in the SN
- * PCI infrastructure.
- */
- rc = sal_pcibr_slot_enable(pcibus_info, device_num, &resp, ssdt);
-
-
- if (rc == PCI_SLOT_ALREADY_UP) {
- pci_dbg(slot->pci_bus->self, "is already active\n");
- return 1; /* return 1 to user */
- }
-
- if (rc == PCI_L1_ERR) {
- pci_dbg(slot->pci_bus->self, "L1 failure %d with message: %s",
- resp.resp_sub_errno, resp.resp_l1_msg);
- return -EPERM;
- }
-
- if (rc) {
- pci_dbg(slot->pci_bus->self, "insert failed with error %d sub-error %d\n",
- rc, resp.resp_sub_errno);
- return -EIO;
- }
-
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
- pcibus_info->pbi_enabled_devices |= (1 << device_num);
-
- return 0;
-}
-
-static int sn_slot_disable(struct hotplug_slot *bss_hotplug_slot,
- int device_num, int action)
-{
- struct slot *slot = to_slot(bss_hotplug_slot);
- struct pcibus_info *pcibus_info;
- struct pcibr_slot_disable_resp resp;
- int rc;
-
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
-
- rc = sal_pcibr_slot_disable(pcibus_info, device_num, action, &resp);
-
- if ((action == PCI_REQ_SLOT_ELIGIBLE) &&
- (rc == PCI_SLOT_ALREADY_DOWN)) {
- pci_dbg(slot->pci_bus->self, "Slot %s already inactive\n", slot->physical_path);
- return 1; /* return 1 to user */
- }
-
- if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_EMPTY_33MHZ)) {
- pci_dbg(slot->pci_bus->self, "Cannot remove last 33MHz card\n");
- return -EPERM;
- }
-
- if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_L1_ERR)) {
- pci_dbg(slot->pci_bus->self, "L1 failure %d with message \n%s\n",
- resp.resp_sub_errno, resp.resp_l1_msg);
- return -EPERM;
- }
-
- if ((action == PCI_REQ_SLOT_ELIGIBLE) && rc) {
- pci_dbg(slot->pci_bus->self, "remove failed with error %d sub-error %d\n",
- rc, resp.resp_sub_errno);
- return -EIO;
- }
-
- if ((action == PCI_REQ_SLOT_ELIGIBLE) && !rc)
- return 0;
-
- if ((action == PCI_REQ_SLOT_DISABLE) && !rc) {
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
- pcibus_info->pbi_enabled_devices &= ~(1 << device_num);
- pci_dbg(slot->pci_bus->self, "remove successful\n");
- return 0;
- }
-
- if ((action == PCI_REQ_SLOT_DISABLE) && rc) {
- pci_dbg(slot->pci_bus->self, "remove failed rc = %d\n", rc);
- }
-
- return rc;
-}
-
-/*
- * Power up and configure the slot via a SAL call to PROM.
- * Scan slot (and any children), do any platform specific fixup,
- * and find device driver.
- */
-static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
-{
- struct slot *slot = to_slot(bss_hotplug_slot);
- struct pci_bus *new_bus = NULL;
- struct pci_dev *dev;
- int num_funcs;
- int new_ppb = 0;
- int rc;
- char *ssdt = NULL;
- void pcibios_fixup_device_resources(struct pci_dev *);
-
- /* Serialize the Linux PCI infrastructure */
- mutex_lock(&sn_hotplug_mutex);
-
- /*
- * Power-on and initialize the slot in the SN
- * PCI infrastructure. Also, retrieve the ACPI SSDT
- * table for the slot (if ACPI capable PROM).
- */
- rc = sn_slot_enable(bss_hotplug_slot, slot->device_num, &ssdt);
- if (rc) {
- mutex_unlock(&sn_hotplug_mutex);
- return rc;
- }
-
- if (ssdt)
- ssdt = __va(ssdt);
- /* Add the new SSDT for the slot to the ACPI namespace */
- if (SN_ACPI_BASE_SUPPORT() && ssdt) {
- acpi_status ret;
-
- ret = acpi_load_table((struct acpi_table_header *)ssdt);
- if (ACPI_FAILURE(ret)) {
- printk(KERN_ERR "%s: acpi_load_table failed (0x%x)\n",
- __func__, ret);
- /* try to continue on */
- }
- }
-
- num_funcs = pci_scan_slot(slot->pci_bus,
- PCI_DEVFN(slot->device_num + 1, 0));
- if (!num_funcs) {
- pci_dbg(slot->pci_bus->self, "no device in slot\n");
- mutex_unlock(&sn_hotplug_mutex);
- return -ENODEV;
- }
-
- /*
- * Map SN resources for all functions on the card
- * to the Linux PCI interface and tell the drivers
- * about them.
- */
- list_for_each_entry(dev, &slot->pci_bus->devices, bus_list) {
- if (PCI_SLOT(dev->devfn) != slot->device_num + 1)
- continue;
-
- /* Need to do slot fixup on PPB before fixup of children
- * (PPB's pcidev_info needs to be in pcidev_info list
- * before child's SN_PCIDEV_INFO() call to setup
- * pdi_host_pcidev_info).
- */
- pcibios_fixup_device_resources(dev);
- if (SN_ACPI_BASE_SUPPORT())
- sn_acpi_slot_fixup(dev);
- else
- sn_io_slot_fixup(dev);
- if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
- pci_hp_add_bridge(dev);
- if (dev->subordinate) {
- new_bus = dev->subordinate;
- new_ppb = 1;
- }
- }
- }
-
- /*
- * Add the slot's devices to the ACPI infrastructure */
- if (SN_ACPI_BASE_SUPPORT() && ssdt) {
- unsigned long long adr;
- struct acpi_device *pdevice;
- acpi_handle phandle;
- acpi_handle chandle = NULL;
- acpi_handle rethandle;
- acpi_status ret;
-
- phandle = acpi_device_handle(PCI_CONTROLLER(slot->pci_bus)->companion);
-
- if (acpi_bus_get_device(phandle, &pdevice)) {
- pci_dbg(slot->pci_bus->self, "no parent device, assuming NULL\n");
- pdevice = NULL;
- }
-
- acpi_scan_lock_acquire();
- /*
- * Walk the rootbus node's immediate children looking for
- * the slot's device node(s). There can be more than
- * one for multifunction devices.
- */
- for (;;) {
- rethandle = NULL;
- ret = acpi_get_next_object(ACPI_TYPE_DEVICE,
- phandle, chandle,
- &rethandle);
-
- if (ret == AE_NOT_FOUND || rethandle == NULL)
- break;
-
- chandle = rethandle;
-
- ret = acpi_evaluate_integer(chandle, METHOD_NAME__ADR,
- NULL, &adr);
-
- if (ACPI_SUCCESS(ret) &&
- (adr>>16) == (slot->device_num + 1)) {
-
- ret = acpi_bus_scan(chandle);
- if (ACPI_FAILURE(ret)) {
- printk(KERN_ERR "%s: acpi_bus_scan failed (0x%x) for slot %d func %d\n",
- __func__, ret, (int)(adr>>16),
- (int)(adr&0xffff));
- /* try to continue on */
- }
- }
- }
- acpi_scan_lock_release();
- }
-
- pci_lock_rescan_remove();
-
- /* Call the driver for the new device */
- pci_bus_add_devices(slot->pci_bus);
- /* Call the drivers for the new devices subordinate to PPB */
- if (new_ppb)
- pci_bus_add_devices(new_bus);
-
- pci_unlock_rescan_remove();
- mutex_unlock(&sn_hotplug_mutex);
-
- if (rc == 0)
- pci_dbg(slot->pci_bus->self, "insert operation successful\n");
- else
- pci_dbg(slot->pci_bus->self, "insert operation failed rc = %d\n", rc);
-
- return rc;
-}
-
-static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
-{
- struct slot *slot = to_slot(bss_hotplug_slot);
- struct pci_dev *dev, *temp;
- int rc;
- acpi_handle ssdt_hdl = NULL;
-
- /* Acquire update access to the bus */
- mutex_lock(&sn_hotplug_mutex);
-
- /* is it okay to bring this slot down? */
- rc = sn_slot_disable(bss_hotplug_slot, slot->device_num,
- PCI_REQ_SLOT_ELIGIBLE);
- if (rc)
- goto leaving;
-
- /* free the ACPI resources for the slot */
- if (SN_ACPI_BASE_SUPPORT() &&
- PCI_CONTROLLER(slot->pci_bus)->companion) {
- unsigned long long adr;
- struct acpi_device *device;
- acpi_handle phandle;
- acpi_handle chandle = NULL;
- acpi_handle rethandle;
- acpi_status ret;
-
- /* Get the rootbus node pointer */
- phandle = acpi_device_handle(PCI_CONTROLLER(slot->pci_bus)->companion);
-
- acpi_scan_lock_acquire();
- /*
- * Walk the rootbus node's immediate children looking for
- * the slot's device node(s). There can be more than
- * one for multifunction devices.
- */
- for (;;) {
- rethandle = NULL;
- ret = acpi_get_next_object(ACPI_TYPE_DEVICE,
- phandle, chandle,
- &rethandle);
-
- if (ret == AE_NOT_FOUND || rethandle == NULL)
- break;
-
- chandle = rethandle;
-
- ret = acpi_evaluate_integer(chandle,
- METHOD_NAME__ADR,
- NULL, &adr);
- if (ACPI_SUCCESS(ret) &&
- (adr>>16) == (slot->device_num + 1)) {
- /* retain the owner id */
- ssdt_hdl = chandle;
-
- ret = acpi_bus_get_device(chandle,
- &device);
- if (ACPI_SUCCESS(ret))
- acpi_bus_trim(device);
- }
- }
- acpi_scan_lock_release();
- }
-
- pci_lock_rescan_remove();
- /* Free the SN resources assigned to the Linux device.*/
- list_for_each_entry_safe(dev, temp, &slot->pci_bus->devices, bus_list) {
- if (PCI_SLOT(dev->devfn) != slot->device_num + 1)
- continue;
-
- pci_dev_get(dev);
- sn_bus_free_data(dev);
- pci_stop_and_remove_bus_device(dev);
- pci_dev_put(dev);
- }
- pci_unlock_rescan_remove();
-
- /* Remove the SSDT for the slot from the ACPI namespace */
- if (SN_ACPI_BASE_SUPPORT() && ssdt_hdl) {
- acpi_status ret;
- ret = acpi_unload_parent_table(ssdt_hdl);
- if (ACPI_FAILURE(ret)) {
- acpi_handle_err(ssdt_hdl,
- "%s: acpi_unload_parent_table failed (0x%x)\n",
- __func__, ret);
- /* try to continue on */
- }
- }
-
- /* free the collected sysdata pointers */
- sn_bus_free_sysdata();
-
- /* Deactivate slot */
- rc = sn_slot_disable(bss_hotplug_slot, slot->device_num,
- PCI_REQ_SLOT_DISABLE);
- leaving:
- /* Release the bus lock */
- mutex_unlock(&sn_hotplug_mutex);
-
- return rc;
-}
-
-static inline int get_power_status(struct hotplug_slot *bss_hotplug_slot,
- u8 *value)
-{
- struct slot *slot = to_slot(bss_hotplug_slot);
- struct pcibus_info *pcibus_info;
- u32 power;
-
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
- mutex_lock(&sn_hotplug_mutex);
- power = pcibus_info->pbi_enabled_devices & (1 << slot->device_num);
- *value = power ? 1 : 0;
- mutex_unlock(&sn_hotplug_mutex);
- return 0;
-}
-
-static void sn_release_slot(struct hotplug_slot *bss_hotplug_slot)
-{
- kfree(to_slot(bss_hotplug_slot));
-}
-
-static int sn_hotplug_slot_register(struct pci_bus *pci_bus)
-{
- int device;
- struct pci_slot *pci_slot;
- struct hotplug_slot *bss_hotplug_slot;
- char name[SN_SLOT_NAME_SIZE];
- int rc = 0;
-
- /*
- * Currently only four devices are supported,
- * in the future there maybe more -- up to 32.
- */
-
- for (device = 0; device < SN_MAX_HP_SLOTS ; device++) {
- if (sn_pci_slot_valid(pci_bus, device) != 1)
- continue;
-
- if (sn_hp_slot_private_alloc(&bss_hotplug_slot,
- pci_bus, device, name)) {
- rc = -ENOMEM;
- goto alloc_err;
- }
- bss_hotplug_slot->ops = &sn_hotplug_slot_ops;
-
- rc = pci_hp_register(bss_hotplug_slot, pci_bus, device, name);
- if (rc)
- goto register_err;
-
- pci_slot = bss_hotplug_slot->pci_slot;
- rc = sysfs_create_file(&pci_slot->kobj,
- &sn_slot_path_attr.attr);
- if (rc)
- goto alloc_err;
- }
- pci_dbg(pci_bus->self, "Registered bus with hotplug\n");
- return rc;
-
-register_err:
- pci_dbg(pci_bus->self, "bus failed to register with err = %d\n",
- rc);
-
- /* destroy THIS element */
- sn_hp_destroy();
- sn_release_slot(bss_hotplug_slot);
-
-alloc_err:
- /* destroy anything else on the list */
- while ((bss_hotplug_slot = sn_hp_destroy())) {
- pci_hp_deregister(bss_hotplug_slot);
- sn_release_slot(bss_hotplug_slot);
- }
-
- return rc;
-}
-
-static int __init sn_pci_hotplug_init(void)
-{
- struct pci_bus *pci_bus = NULL;
- int rc;
- int registered = 0;
-
- if (!sn_prom_feature_available(PRF_HOTPLUG_SUPPORT)) {
- printk(KERN_ERR "%s: PROM version does not support hotplug.\n",
- __func__);
- return -EPERM;
- }
-
- INIT_LIST_HEAD(&sn_hp_list);
-
- while ((pci_bus = pci_find_next_bus(pci_bus))) {
- if (!pci_bus->sysdata)
- continue;
-
- rc = sn_pci_bus_valid(pci_bus);
- if (rc != 1) {
- pci_dbg(pci_bus->self, "not a valid hotplug bus\n");
- continue;
- }
- pci_dbg(pci_bus->self, "valid hotplug bus\n");
-
- rc = sn_hotplug_slot_register(pci_bus);
- if (!rc) {
- registered = 1;
- } else {
- registered = 0;
- break;
- }
- }
-
- return registered == 1 ? 0 : -ENODEV;
-}
-
-static void __exit sn_pci_hotplug_exit(void)
-{
- struct hotplug_slot *bss_hotplug_slot;
-
- while ((bss_hotplug_slot = sn_hp_destroy())) {
- pci_hp_deregister(bss_hotplug_slot);
- sn_release_slot(bss_hotplug_slot);
- }
-
- if (!list_empty(&sn_hp_list))
- printk(KERN_ERR "%s: internal list is not empty\n", __FILE__);
-}
-
-module_init(sn_pci_hotplug_init);
-module_exit(sn_pci_hotplug_exit);
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