X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fpci%2Fhotplug%2Fpciehp_hpc.c;h=2387e75da0feee0ab93e4491fc3b1ee0ad0d0f62;hb=3be4bb06b53df2c0a760eeaa5f53448faddedfca;hp=7a0e27f0e063d40eebb4c02a3bd67b2177fb59d4;hpb=7974b1cc7879141962999e78a6fc9a136dc4479e;p=powerpc.git

diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 7a0e27f0e0..2387e75da0 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -27,16 +27,12 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
 #include <linux/pci.h>
-#include <asm/system.h>
+#include <linux/interrupt.h>
+
 #include "../pci.h"
 #include "pciehp.h"
 
@@ -217,23 +213,6 @@ static int pcie_cap_base = 0;		/* Base of the PCI Express capability item struct
 #define MRL_STATE		0x0020
 #define PRSN_STATE		0x0040
 
-struct php_ctlr_state_s {
-	struct php_ctlr_state_s *pnext;
-	struct pci_dev *pci_dev;
-	unsigned int irq;
-	unsigned long flags;				/* spinlock's */
-	u32 slot_device_offset;
-	u32 num_slots;
-    	struct timer_list	int_poll_timer;		/* Added for poll event */
-	php_intr_callback_t 	attention_button_callback;
-	php_intr_callback_t 	switch_change_callback;
-	php_intr_callback_t 	presence_change_callback;
-	php_intr_callback_t 	power_fault_callback;
-	void 			*callback_instance_id;
-	struct ctrl_reg 	*creg;				/* Ptr to controller register space */
-};
-
-
 static spinlock_t hpc_event_lock;
 
 DEFINE_DBG_BUFFER		/* Debug string buffer for entire HPC defined here */
@@ -297,7 +276,6 @@ static int pcie_write_cmd(struct slot *slot, u16 cmd)
 
 	DBG_ENTER_ROUTINE 
 	
-	dbg("%s : Enter\n", __FUNCTION__);
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
 		return -1;
@@ -308,7 +286,6 @@ static int pcie_write_cmd(struct slot *slot, u16 cmd)
 			err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
 			return retval;
 		}
-	dbg("%s : hp_register_read_word SLOT_STATUS %x\n", __FUNCTION__, slot_status);
 	
 	if ((slot_status & CMD_COMPLETED) == CMD_COMPLETED ) { 
 		/* After 1 sec and CMD_COMPLETED still not set, just proceed forward to issue 
@@ -316,14 +293,11 @@ static int pcie_write_cmd(struct slot *slot, u16 cmd)
 		dbg("%s : CMD_COMPLETED not clear after 1 sec.\n", __FUNCTION__);
 	}
 
-	dbg("%s: Before hp_register_write_word SLOT_CTRL %x\n", __FUNCTION__, cmd);
 	retval = hp_register_write_word(php_ctlr->pci_dev, SLOT_CTRL(slot->ctrl->cap_base), cmd | CMD_CMPL_INTR_ENABLE);
 	if (retval) {
 		err("%s : hp_register_write_word SLOT_CTRL failed\n", __FUNCTION__);
 		return retval;
 	}
-	dbg("%s : hp_register_write_word SLOT_CTRL %x\n", __FUNCTION__, cmd | CMD_CMPL_INTR_ENABLE);
-	dbg("%s : Exit\n", __FUNCTION__);
 
 	DBG_LEAVE_ROUTINE 
 	return retval;
@@ -509,7 +483,6 @@ static int hpc_query_power_fault(struct slot * slot)
 	u16 slot_status;
 	u8 pwr_fault;
 	int retval = 0;
-	u8 status;
 
 	DBG_ENTER_ROUTINE 
 
@@ -521,15 +494,13 @@ static int hpc_query_power_fault(struct slot * slot)
 	retval = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(slot->ctrl->cap_base), slot_status);
 
 	if (retval) {
-		err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
+		err("%s : Cannot check for power fault\n", __FUNCTION__);
 		return retval;
 	}
 	pwr_fault = (u8)((slot_status & PWR_FAULT_DETECTED) >> 1);
-	status = (pwr_fault != 1) ? 1 : 0;
 	
 	DBG_LEAVE_ROUTINE
-	/* Note: Logic 0 => fault */
-	return status;
+	return pwr_fault;
 }
 
 static int hpc_set_attention_status(struct slot *slot, u8 value)
@@ -539,7 +510,8 @@ static int hpc_set_attention_status(struct slot *slot, u8 value)
 	u16 slot_ctrl;
 	int rc = 0;
 
-	dbg("%s: \n", __FUNCTION__);
+	DBG_ENTER_ROUTINE
+
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
 		return -1;
@@ -555,7 +527,6 @@ static int hpc_set_attention_status(struct slot *slot, u8 value)
 		err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
 		return rc;
 	}
-	dbg("%s : hp_register_read_word SLOT_CTRL %x\n", __FUNCTION__, slot_ctrl);
 
 	switch (value) {
 		case 0 :	/* turn off */
@@ -576,6 +547,7 @@ static int hpc_set_attention_status(struct slot *slot, u8 value)
 	pcie_write_cmd(slot, slot_cmd);
 	dbg("%s: SLOT_CTRL %x write cmd %x\n", __FUNCTION__, SLOT_CTRL(slot->ctrl->cap_base), slot_cmd);
 	
+	DBG_LEAVE_ROUTINE
 	return rc;
 }
 
@@ -587,7 +559,8 @@ static void hpc_set_green_led_on(struct slot *slot)
 	u16 slot_ctrl;
 	int rc = 0;
        	
-	dbg("%s: \n", __FUNCTION__);	
+	DBG_ENTER_ROUTINE
+
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
 		return ;
@@ -604,7 +577,6 @@ static void hpc_set_green_led_on(struct slot *slot)
 		err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
 		return;
 	}
-	dbg("%s : hp_register_read_word SLOT_CTRL %x\n", __FUNCTION__, slot_ctrl);
 	slot_cmd = (slot_ctrl & ~PWR_LED_CTRL) | 0x0100;
 	if (!pciehp_poll_mode)
 		slot_cmd = slot_cmd | HP_INTR_ENABLE; 
@@ -612,6 +584,7 @@ static void hpc_set_green_led_on(struct slot *slot)
 	pcie_write_cmd(slot, slot_cmd);
 
 	dbg("%s: SLOT_CTRL %x write cmd %x\n",__FUNCTION__, SLOT_CTRL(slot->ctrl->cap_base), slot_cmd);
+	DBG_LEAVE_ROUTINE
 	return;
 }
 
@@ -622,7 +595,8 @@ static void hpc_set_green_led_off(struct slot *slot)
 	u16 slot_ctrl;
 	int rc = 0;
 
-	dbg("%s: \n", __FUNCTION__);	
+	DBG_ENTER_ROUTINE
+
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
 		return ;
@@ -639,7 +613,6 @@ static void hpc_set_green_led_off(struct slot *slot)
 		err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
 		return;
 	}
-	dbg("%s : hp_register_read_word SLOT_CTRL %x\n", __FUNCTION__, slot_ctrl);
 
 	slot_cmd = (slot_ctrl & ~PWR_LED_CTRL) | 0x0300;
 
@@ -648,6 +621,7 @@ static void hpc_set_green_led_off(struct slot *slot)
 	pcie_write_cmd(slot, slot_cmd);
 	dbg("%s: SLOT_CTRL %x write cmd %x\n", __FUNCTION__, SLOT_CTRL(slot->ctrl->cap_base), slot_cmd);
 
+	DBG_LEAVE_ROUTINE
 	return;
 }
 
@@ -658,7 +632,8 @@ static void hpc_set_green_led_blink(struct slot *slot)
 	u16 slot_ctrl;
 	int rc = 0; 
 	
-	dbg("%s: \n", __FUNCTION__);	
+	DBG_ENTER_ROUTINE
+
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
 		return ;
@@ -675,7 +650,6 @@ static void hpc_set_green_led_blink(struct slot *slot)
 		err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
 		return;
 	}
-	dbg("%s : hp_register_read_word SLOT_CTRL %x\n", __FUNCTION__, slot_ctrl);
 
 	slot_cmd = (slot_ctrl & ~PWR_LED_CTRL) | 0x0200;
 
@@ -684,6 +658,7 @@ static void hpc_set_green_led_blink(struct slot *slot)
 	pcie_write_cmd(slot, slot_cmd);
 
 	dbg("%s: SLOT_CTRL %x write cmd %x\n",__FUNCTION__, SLOT_CTRL(slot->ctrl->cap_base), slot_cmd);
+	DBG_LEAVE_ROUTINE
 	return;
 }
 
@@ -780,7 +755,6 @@ static int hpc_power_on_slot(struct slot * slot)
 	int retval = 0;
 
 	DBG_ENTER_ROUTINE 
-	dbg("%s: \n", __FUNCTION__);	
 
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
@@ -799,8 +773,6 @@ static int hpc_power_on_slot(struct slot * slot)
 		err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
 		return retval;
 	}
-	dbg("%s: SLOT_CTRL %x, value read %xn", __FUNCTION__, SLOT_CTRL(slot->ctrl->cap_base),
-		slot_ctrl);
 
 	slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_ON;
 
@@ -829,7 +801,6 @@ static int hpc_power_off_slot(struct slot * slot)
 	int retval = 0;
 
 	DBG_ENTER_ROUTINE 
-	dbg("%s: \n", __FUNCTION__);	
 
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
@@ -848,8 +819,6 @@ static int hpc_power_off_slot(struct slot * slot)
 		err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
 		return retval;
 	}
-	dbg("%s: SLOT_CTRL %x, value read %x\n", __FUNCTION__, SLOT_CTRL(slot->ctrl->cap_base),
-		slot_ctrl);
 
 	slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_OFF;
 
@@ -924,7 +893,6 @@ static irqreturn_t pcie_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 			return IRQ_NONE;
 		}
 
-		dbg("%s: Set Mask Hot-plug Interrupt Enable\n", __FUNCTION__);
 		dbg("%s: hp_register_read_word SLOT_CTRL with value %x\n", __FUNCTION__, temp_word);
 		temp_word = (temp_word & ~HP_INTR_ENABLE & ~CMD_CMPL_INTR_ENABLE) | 0x00;
 
@@ -933,7 +901,6 @@ static irqreturn_t pcie_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 			err("%s : hp_register_write_word SLOT_CTRL failed\n", __FUNCTION__);
 			return IRQ_NONE;
 		}
-		dbg("%s: hp_register_write_word SLOT_CTRL with value %x\n", __FUNCTION__, temp_word);
 		
 		rc = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), slot_status);
 		if (rc) {
@@ -949,14 +916,12 @@ static irqreturn_t pcie_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 			err("%s : hp_register_write_word SLOT_STATUS failed\n", __FUNCTION__);
 			return IRQ_NONE;
 		}
-		dbg("%s: hp_register_write_word SLOT_STATUS with value %x\n", __FUNCTION__, temp_word);
 	}
 	
 	if (intr_loc & CMD_COMPLETED) {
 		/* 
 		 * Command Complete Interrupt Pending 
 		 */
-		dbg("%s: In Command Complete Interrupt Pending\n", __FUNCTION__);
 		wake_up_interruptible(&ctrl->queue);
 	}
 
@@ -989,7 +954,6 @@ static irqreturn_t pcie_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 		}
 
 		dbg("%s: Unmask Hot-plug Interrupt Enable\n", __FUNCTION__);
-		dbg("%s: hp_register_read_word SLOT_CTRL with value %x\n", __FUNCTION__, temp_word);
 		temp_word = (temp_word & ~HP_INTR_ENABLE) | HP_INTR_ENABLE;
 
 		rc = hp_register_write_word(php_ctlr->pci_dev, SLOT_CTRL(ctrl->cap_base), temp_word);
@@ -997,14 +961,12 @@ static irqreturn_t pcie_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 			err("%s : hp_register_write_word SLOT_CTRL failed\n", __FUNCTION__);
 			return IRQ_NONE;
 		}
-		dbg("%s: hp_register_write_word SLOT_CTRL with value %x\n", __FUNCTION__, temp_word); 	
 	
 		rc = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), slot_status);
 		if (rc) {
 			err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
 			return IRQ_NONE;
 		}
-		dbg("%s: hp_register_read_word SLOT_STATUS with value %x\n", __FUNCTION__, slot_status); 
 		
 		/* Clear command complete interrupt caused by this write */
 		temp_word = 0x1F;
@@ -1248,12 +1210,7 @@ static struct hpc_ops pciehp_hpc_ops = {
 	.check_lnk_status		= hpc_check_lnk_status,
 };
 
-int pcie_init(struct controller * ctrl,
-	struct pcie_device *dev,
-	php_intr_callback_t attention_button_callback,
-	php_intr_callback_t switch_change_callback,
-	php_intr_callback_t presence_change_callback,
-	php_intr_callback_t power_fault_callback)
+int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 {
 	struct php_ctlr_state_s *php_ctlr, *p;
 	void *instance_id = ctrl;
@@ -1282,8 +1239,8 @@ int pcie_init(struct controller * ctrl,
 	pdev = dev->port;
 	php_ctlr->pci_dev = pdev;	/* save pci_dev in context */
 
-	dbg("%s: pdev->vendor %x pdev->device %x\n", __FUNCTION__,
-		pdev->vendor, pdev->device);
+	dbg("%s: hotplug controller vendor id 0x%x device id 0x%x\n",
+			__FUNCTION__, pdev->vendor, pdev->device);
 
 	saved_cap_base = pcie_cap_base;
 
@@ -1340,8 +1297,6 @@ int pcie_init(struct controller * ctrl,
 		first = 0;
 	}
 
-	dbg("pdev = %p: b:d:f:irq=0x%x:%x:%x:%x\n", pdev, pdev->bus->number, 
-		PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), dev->irq);
 	for ( rc = 0; rc < DEVICE_COUNT_RESOURCE; rc++)
 		if (pci_resource_len(pdev, rc) > 0)
 			dbg("pci resource[%d] start=0x%lx(len=0x%lx)\n", rc,
@@ -1359,13 +1314,12 @@ int pcie_init(struct controller * ctrl,
 
 	/* find the IRQ */
 	php_ctlr->irq = dev->irq;
-	dbg("HPC interrupt = %d\n", php_ctlr->irq);
 
 	/* Save interrupt callback info */
-	php_ctlr->attention_button_callback = attention_button_callback;
-	php_ctlr->switch_change_callback = switch_change_callback;
-	php_ctlr->presence_change_callback = presence_change_callback;
-	php_ctlr->power_fault_callback = power_fault_callback;
+	php_ctlr->attention_button_callback = pciehp_handle_attention_button;
+	php_ctlr->switch_change_callback = pciehp_handle_switch_change;
+	php_ctlr->presence_change_callback = pciehp_handle_presence_change;
+	php_ctlr->power_fault_callback = pciehp_handle_power_fault;
 	php_ctlr->callback_instance_id = instance_id;
 
 	/* return PCI Controller Info */
@@ -1387,15 +1341,12 @@ int pcie_init(struct controller * ctrl,
 		err("%s : hp_register_write_word SLOT_CTRL failed\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}
-	dbg("%s : Mask HPIE hp_register_write_word SLOT_CTRL %x\n", __FUNCTION__, temp_word);
 
 	rc = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), slot_status);
 	if (rc) {
 		err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}
-	dbg("%s: Mask HPIE SLOT_STATUS offset %x reads slot_status %x\n", __FUNCTION__, SLOT_STATUS(ctrl->cap_base)
-		, slot_status);
 
 	temp_word = 0x1F; /* Clear all events */
 	rc = hp_register_write_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), temp_word);
@@ -1403,7 +1354,6 @@ int pcie_init(struct controller * ctrl,
 		err("%s : hp_register_write_word SLOT_STATUS failed\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}
-	dbg("%s: SLOT_STATUS offset %x writes slot_status %x\n", __FUNCTION__, SLOT_STATUS(ctrl->cap_base), temp_word);
 
 	if (pciehp_poll_mode)  {/* Install interrupt polling code */
 		/* Install and start the interrupt polling timer */
@@ -1419,13 +1369,14 @@ int pcie_init(struct controller * ctrl,
 		}
 	}
 
+	dbg("pciehp ctrl b:d:f:irq=0x%x:%x:%x:%x\n", pdev->bus->number,
+		PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), dev->irq);
+
 	rc = hp_register_read_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word);
 	if (rc) {
 		err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}
-	dbg("%s: SLOT_CTRL %x value read %x\n", __FUNCTION__, SLOT_CTRL(ctrl->cap_base), temp_word);
-	dbg("%s: slot_cap %x\n", __FUNCTION__, slot_cap);
 
 	intr_enable = intr_enable | PRSN_DETECT_ENABLE;
 
@@ -1445,7 +1396,6 @@ int pcie_init(struct controller * ctrl,
 	} else {
 		temp_word = (temp_word & ~HP_INTR_ENABLE) | HP_INTR_ENABLE;
 	}
-	dbg("%s: temp_word %x\n", __FUNCTION__, temp_word);
 
 	/* Unmask Hot-plug Interrupt Enable for the interrupt notification mechanism case */
 	rc = hp_register_write_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word);
@@ -1453,14 +1403,11 @@ int pcie_init(struct controller * ctrl,
 		err("%s : hp_register_write_word SLOT_CTRL failed\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}
-	dbg("%s : Unmask HPIE hp_register_write_word SLOT_CTRL with %x\n", __FUNCTION__, temp_word);
 	rc = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), slot_status);
 	if (rc) {
 		err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}
-	dbg("%s: Unmask HPIE SLOT_STATUS offset %x reads slot_status %x\n", __FUNCTION__, 
-		SLOT_STATUS(ctrl->cap_base), slot_status);
 	
 	temp_word =  0x1F; /* Clear all events */
 	rc = hp_register_write_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), temp_word);
@@ -1468,8 +1415,16 @@ int pcie_init(struct controller * ctrl,
 		err("%s : hp_register_write_word SLOT_STATUS failed\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}
-	dbg("%s: SLOT_STATUS offset %x writes slot_status %x\n", __FUNCTION__, SLOT_STATUS(ctrl->cap_base), temp_word);
 	
+	if (pciehp_force) {
+		dbg("Bypassing BIOS check for pciehp use on %s\n",
+				pci_name(ctrl->pci_dev));
+	} else {
+		rc = pciehp_get_hp_hw_control_from_firmware(ctrl->pci_dev);
+		if (rc)
+			goto abort_free_ctlr;
+	}
+
 	/*  Add this HPC instance into the HPC list */
 	spin_lock(&list_lock);
 	if (php_ctlr_list_head == 0) {