2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* PCI Express PCI Hot Plug Driver
|
|
|
|
*
|
|
|
|
* Copyright (C) 1995,2001 Compaq Computer Corporation
|
|
|
|
* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
|
|
|
|
* Copyright (C) 2001 IBM Corp.
|
|
|
|
* Copyright (C) 2003-2004 Intel Corporation
|
|
|
|
*
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or (at
|
|
|
|
* your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful, but
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
|
|
* NON INFRINGEMENT. See the GNU General Public License for more
|
|
|
|
* details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*
|
2005-08-16 22:16:10 +00:00
|
|
|
* Send feedback to <greg@kroah.com>,<kristen.c.accardi@intel.com>
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/types.h>
|
2006-01-08 09:02:05 +00:00
|
|
|
#include <linux/signal.h>
|
|
|
|
#include <linux/jiffies.h>
|
|
|
|
#include <linux/timer.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
#include <linux/pci.h>
|
2005-11-14 00:06:39 +00:00
|
|
|
#include <linux/interrupt.h>
|
2007-01-09 21:02:36 +00:00
|
|
|
#include <linux/time.h>
|
2005-11-14 00:06:39 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#include "../pci.h"
|
|
|
|
#include "pciehp.h"
|
|
|
|
|
2007-03-06 23:02:26 +00:00
|
|
|
static atomic_t pciehp_num_controllers = ATOMIC_INIT(0);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
struct ctrl_reg {
|
|
|
|
u8 cap_id;
|
|
|
|
u8 nxt_ptr;
|
|
|
|
u16 cap_reg;
|
|
|
|
u32 dev_cap;
|
|
|
|
u16 dev_ctrl;
|
|
|
|
u16 dev_status;
|
|
|
|
u32 lnk_cap;
|
|
|
|
u16 lnk_ctrl;
|
|
|
|
u16 lnk_status;
|
|
|
|
u32 slot_cap;
|
|
|
|
u16 slot_ctrl;
|
|
|
|
u16 slot_status;
|
|
|
|
u16 root_ctrl;
|
|
|
|
u16 rsvp;
|
|
|
|
u32 root_status;
|
|
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
|
|
/* offsets to the controller registers based on the above structure layout */
|
|
|
|
enum ctrl_offsets {
|
|
|
|
PCIECAPID = offsetof(struct ctrl_reg, cap_id),
|
|
|
|
NXTCAPPTR = offsetof(struct ctrl_reg, nxt_ptr),
|
|
|
|
CAPREG = offsetof(struct ctrl_reg, cap_reg),
|
|
|
|
DEVCAP = offsetof(struct ctrl_reg, dev_cap),
|
|
|
|
DEVCTRL = offsetof(struct ctrl_reg, dev_ctrl),
|
|
|
|
DEVSTATUS = offsetof(struct ctrl_reg, dev_status),
|
|
|
|
LNKCAP = offsetof(struct ctrl_reg, lnk_cap),
|
|
|
|
LNKCTRL = offsetof(struct ctrl_reg, lnk_ctrl),
|
|
|
|
LNKSTATUS = offsetof(struct ctrl_reg, lnk_status),
|
|
|
|
SLOTCAP = offsetof(struct ctrl_reg, slot_cap),
|
|
|
|
SLOTCTRL = offsetof(struct ctrl_reg, slot_ctrl),
|
|
|
|
SLOTSTATUS = offsetof(struct ctrl_reg, slot_status),
|
|
|
|
ROOTCTRL = offsetof(struct ctrl_reg, root_ctrl),
|
|
|
|
ROOTSTATUS = offsetof(struct ctrl_reg, root_status),
|
|
|
|
};
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
static inline int pciehp_readw(struct controller *ctrl, int reg, u16 *value)
|
|
|
|
{
|
|
|
|
struct pci_dev *dev = ctrl->pci_dev;
|
|
|
|
return pci_read_config_word(dev, ctrl->cap_base + reg, value);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int pciehp_readl(struct controller *ctrl, int reg, u32 *value)
|
|
|
|
{
|
|
|
|
struct pci_dev *dev = ctrl->pci_dev;
|
|
|
|
return pci_read_config_dword(dev, ctrl->cap_base + reg, value);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int pciehp_writew(struct controller *ctrl, int reg, u16 value)
|
|
|
|
{
|
|
|
|
struct pci_dev *dev = ctrl->pci_dev;
|
|
|
|
return pci_write_config_word(dev, ctrl->cap_base + reg, value);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int pciehp_writel(struct controller *ctrl, int reg, u32 value)
|
|
|
|
{
|
|
|
|
struct pci_dev *dev = ctrl->pci_dev;
|
|
|
|
return pci_write_config_dword(dev, ctrl->cap_base + reg, value);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* Field definitions in PCI Express Capabilities Register */
|
|
|
|
#define CAP_VER 0x000F
|
|
|
|
#define DEV_PORT_TYPE 0x00F0
|
|
|
|
#define SLOT_IMPL 0x0100
|
|
|
|
#define MSG_NUM 0x3E00
|
|
|
|
|
|
|
|
/* Device or Port Type */
|
|
|
|
#define NAT_ENDPT 0x00
|
|
|
|
#define LEG_ENDPT 0x01
|
|
|
|
#define ROOT_PORT 0x04
|
|
|
|
#define UP_STREAM 0x05
|
|
|
|
#define DN_STREAM 0x06
|
|
|
|
#define PCIE_PCI_BRDG 0x07
|
|
|
|
#define PCI_PCIE_BRDG 0x10
|
|
|
|
|
|
|
|
/* Field definitions in Device Capabilities Register */
|
|
|
|
#define DATTN_BUTTN_PRSN 0x1000
|
|
|
|
#define DATTN_LED_PRSN 0x2000
|
|
|
|
#define DPWR_LED_PRSN 0x4000
|
|
|
|
|
|
|
|
/* Field definitions in Link Capabilities Register */
|
|
|
|
#define MAX_LNK_SPEED 0x000F
|
|
|
|
#define MAX_LNK_WIDTH 0x03F0
|
|
|
|
|
|
|
|
/* Link Width Encoding */
|
|
|
|
#define LNK_X1 0x01
|
|
|
|
#define LNK_X2 0x02
|
2007-08-09 23:09:34 +00:00
|
|
|
#define LNK_X4 0x04
|
2005-04-16 22:20:36 +00:00
|
|
|
#define LNK_X8 0x08
|
|
|
|
#define LNK_X12 0x0C
|
2007-08-09 23:09:34 +00:00
|
|
|
#define LNK_X16 0x10
|
2005-04-16 22:20:36 +00:00
|
|
|
#define LNK_X32 0x20
|
|
|
|
|
|
|
|
/*Field definitions of Link Status Register */
|
|
|
|
#define LNK_SPEED 0x000F
|
|
|
|
#define NEG_LINK_WD 0x03F0
|
|
|
|
#define LNK_TRN_ERR 0x0400
|
|
|
|
#define LNK_TRN 0x0800
|
|
|
|
#define SLOT_CLK_CONF 0x1000
|
|
|
|
|
|
|
|
/* Field definitions in Slot Capabilities Register */
|
|
|
|
#define ATTN_BUTTN_PRSN 0x00000001
|
|
|
|
#define PWR_CTRL_PRSN 0x00000002
|
|
|
|
#define MRL_SENS_PRSN 0x00000004
|
|
|
|
#define ATTN_LED_PRSN 0x00000008
|
|
|
|
#define PWR_LED_PRSN 0x00000010
|
|
|
|
#define HP_SUPR_RM_SUP 0x00000020
|
|
|
|
#define HP_CAP 0x00000040
|
|
|
|
#define SLOT_PWR_VALUE 0x000003F8
|
|
|
|
#define SLOT_PWR_LIMIT 0x00000C00
|
|
|
|
#define PSN 0xFFF80000 /* PSN: Physical Slot Number */
|
|
|
|
|
|
|
|
/* Field definitions in Slot Control Register */
|
|
|
|
#define ATTN_BUTTN_ENABLE 0x0001
|
|
|
|
#define PWR_FAULT_DETECT_ENABLE 0x0002
|
|
|
|
#define MRL_DETECT_ENABLE 0x0004
|
|
|
|
#define PRSN_DETECT_ENABLE 0x0008
|
|
|
|
#define CMD_CMPL_INTR_ENABLE 0x0010
|
|
|
|
#define HP_INTR_ENABLE 0x0020
|
|
|
|
#define ATTN_LED_CTRL 0x00C0
|
|
|
|
#define PWR_LED_CTRL 0x0300
|
|
|
|
#define PWR_CTRL 0x0400
|
2007-01-09 21:02:36 +00:00
|
|
|
#define EMI_CTRL 0x0800
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* Attention indicator and Power indicator states */
|
|
|
|
#define LED_ON 0x01
|
|
|
|
#define LED_BLINK 0x10
|
|
|
|
#define LED_OFF 0x11
|
|
|
|
|
|
|
|
/* Power Control Command */
|
|
|
|
#define POWER_ON 0
|
|
|
|
#define POWER_OFF 0x0400
|
|
|
|
|
2007-01-09 21:02:36 +00:00
|
|
|
/* EMI Status defines */
|
|
|
|
#define EMI_DISENGAGED 0
|
|
|
|
#define EMI_ENGAGED 1
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* Field definitions in Slot Status Register */
|
|
|
|
#define ATTN_BUTTN_PRESSED 0x0001
|
|
|
|
#define PWR_FAULT_DETECTED 0x0002
|
|
|
|
#define MRL_SENS_CHANGED 0x0004
|
|
|
|
#define PRSN_DETECT_CHANGED 0x0008
|
|
|
|
#define CMD_COMPLETED 0x0010
|
|
|
|
#define MRL_STATE 0x0020
|
|
|
|
#define PRSN_STATE 0x0040
|
2007-01-09 21:02:36 +00:00
|
|
|
#define EMI_STATE 0x0080
|
|
|
|
#define EMI_STATUS_BIT 7
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:04 +00:00
|
|
|
static irqreturn_t pcie_isr(int irq, void *dev_id);
|
|
|
|
static void start_int_poll_timer(struct controller *ctrl, int sec);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* This is the interrupt polling timeout function. */
|
2006-12-22 01:01:04 +00:00
|
|
|
static void int_poll_timeout(unsigned long data)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = (struct controller *)data;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* Poll for interrupt events. regs == NULL => polling */
|
2006-12-22 01:01:04 +00:00
|
|
|
pcie_isr(0, ctrl);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:04 +00:00
|
|
|
init_timer(&ctrl->poll_timer);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (!pciehp_poll_time)
|
2007-08-09 23:09:38 +00:00
|
|
|
pciehp_poll_time = 2; /* default polling interval is 2 sec */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:04 +00:00
|
|
|
start_int_poll_timer(ctrl, pciehp_poll_time);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* This function starts the interrupt polling timer. */
|
2006-12-22 01:01:04 +00:00
|
|
|
static void start_int_poll_timer(struct controller *ctrl, int sec)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
/* Clamp to sane value */
|
|
|
|
if ((sec <= 0) || (sec > 60))
|
|
|
|
sec = 2;
|
|
|
|
|
|
|
|
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);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-22 01:01:09 +00:00
|
|
|
static inline int pcie_wait_cmd(struct controller *ctrl)
|
|
|
|
{
|
2006-12-22 01:01:10 +00:00
|
|
|
int retval = 0;
|
|
|
|
unsigned int msecs = pciehp_poll_mode ? 2500 : 1000;
|
|
|
|
unsigned long timeout = msecs_to_jiffies(msecs);
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = wait_event_interruptible_timeout(ctrl->queue,
|
|
|
|
!ctrl->cmd_busy, timeout);
|
|
|
|
if (!rc)
|
|
|
|
dbg("Command not completed in 1000 msec\n");
|
|
|
|
else if (rc < 0) {
|
|
|
|
retval = -EINTR;
|
|
|
|
info("Command was interrupted by a signal\n");
|
|
|
|
}
|
2006-12-22 01:01:09 +00:00
|
|
|
|
2006-12-22 01:01:10 +00:00
|
|
|
return retval;
|
2006-12-22 01:01:09 +00:00
|
|
|
}
|
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
/**
|
|
|
|
* 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)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
int retval = 0;
|
|
|
|
u16 slot_status;
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 slot_ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:09 +00:00
|
|
|
mutex_lock(&ctrl->ctrl_lock);
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTSTATUS register\n", __func__);
|
2006-12-22 01:01:09 +00:00
|
|
|
goto out;
|
2006-12-22 01:01:06 +00:00
|
|
|
}
|
|
|
|
|
2007-08-09 23:09:34 +00:00
|
|
|
if ((slot_status & CMD_COMPLETED) == CMD_COMPLETED ) {
|
2006-12-22 01:01:09 +00:00
|
|
|
/* After 1 sec and CMD_COMPLETED still not set, just
|
|
|
|
proceed forward to issue the next command according
|
|
|
|
to spec. Just print out the error message */
|
|
|
|
dbg("%s: CMD_COMPLETED not clear after 1 sec.\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCTRL register\n", __func__);
|
2008-04-25 21:38:57 +00:00
|
|
|
goto out;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
slot_ctrl &= ~mask;
|
|
|
|
slot_ctrl |= ((cmd & mask) | CMD_CMPL_INTR_ENABLE);
|
|
|
|
|
|
|
|
ctrl->cmd_busy = 1;
|
|
|
|
retval = pciehp_writew(ctrl, SLOTCTRL, slot_ctrl);
|
|
|
|
if (retval)
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot write to SLOTCTRL register\n", __func__);
|
2007-05-31 16:43:34 +00:00
|
|
|
|
2006-12-22 01:01:09 +00:00
|
|
|
/*
|
|
|
|
* Wait for command completion.
|
|
|
|
*/
|
2007-05-31 16:43:34 +00:00
|
|
|
if (!retval)
|
|
|
|
retval = pcie_wait_cmd(ctrl);
|
2006-12-22 01:01:09 +00:00
|
|
|
out:
|
|
|
|
mutex_unlock(&ctrl->ctrl_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int hpc_check_lnk_status(struct controller *ctrl)
|
|
|
|
{
|
|
|
|
u16 lnk_status;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read LNKSTATUS register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2008-03-04 03:09:46 +00:00
|
|
|
dbg("%s: lnk_status = %x\n", __func__, lnk_status);
|
2007-08-09 23:09:34 +00:00
|
|
|
if ( (lnk_status & LNK_TRN) || (lnk_status & LNK_TRN_ERR) ||
|
2005-04-16 22:20:36 +00:00
|
|
|
!(lnk_status & NEG_LINK_WD)) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s : Link Training Error occurs \n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
retval = -1;
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int hpc_get_attention_status(struct slot *slot, u8 *status)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_ctrl;
|
|
|
|
u8 atten_led_state;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCTRL register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x, value read %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_ctrl);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
atten_led_state = (slot_ctrl & ATTN_LED_CTRL) >> 6;
|
|
|
|
|
|
|
|
switch (atten_led_state) {
|
|
|
|
case 0:
|
|
|
|
*status = 0xFF; /* Reserved */
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
*status = 1; /* On */
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
*status = 2; /* Blink */
|
|
|
|
break;
|
|
|
|
case 3:
|
|
|
|
*status = 0; /* Off */
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
*status = 0xFF;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-12-22 01:01:04 +00:00
|
|
|
static int hpc_get_power_status(struct slot *slot, u8 *status)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_ctrl;
|
|
|
|
u8 pwr_state;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCTRL register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x value read %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_ctrl);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
pwr_state = (slot_ctrl & PWR_CTRL) >> 10;
|
|
|
|
|
|
|
|
switch (pwr_state) {
|
|
|
|
case 0:
|
|
|
|
*status = 1;
|
|
|
|
break;
|
|
|
|
case 1:
|
2007-08-09 23:09:34 +00:00
|
|
|
*status = 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
*status = 0xFF;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int hpc_get_latch_status(struct slot *slot, u8 *status)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_status;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTSTATUS register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2007-08-09 23:09:34 +00:00
|
|
|
*status = (((slot_status & MRL_STATE) >> 5) == 0) ? 0 : 1;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int hpc_get_adapter_status(struct slot *slot, u8 *status)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_status;
|
|
|
|
u8 card_state;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTSTATUS register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
card_state = (u8)((slot_status & PRSN_STATE) >> 6);
|
|
|
|
*status = (card_state == 1) ? 1 : 0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-12-22 01:01:04 +00:00
|
|
|
static int hpc_query_power_fault(struct slot *slot)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_status;
|
|
|
|
u8 pwr_fault;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot check for power fault\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
pwr_fault = (u8)((slot_status & PWR_FAULT_DETECTED) >> 1);
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-11-01 00:20:13 +00:00
|
|
|
return pwr_fault;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-01-09 21:02:36 +00:00
|
|
|
static int hpc_get_emi_status(struct slot *slot, u8 *status)
|
|
|
|
{
|
|
|
|
struct controller *ctrl = slot->ctrl;
|
|
|
|
u16 slot_status;
|
|
|
|
int retval = 0;
|
|
|
|
|
|
|
|
retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s : Cannot check EMI status\n", __func__);
|
2007-01-09 21:02:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
*status = (slot_status & EMI_STATE) >> EMI_STATUS_BIT;
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int hpc_toggle_emi(struct slot *slot)
|
|
|
|
{
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 slot_cmd;
|
|
|
|
u16 cmd_mask;
|
|
|
|
int rc;
|
2007-01-09 21:02:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
slot_cmd = EMI_CTRL;
|
|
|
|
cmd_mask = EMI_CTRL;
|
|
|
|
if (!pciehp_poll_mode) {
|
2007-01-09 21:02:36 +00:00
|
|
|
slot_cmd = slot_cmd | HP_INTR_ENABLE;
|
2007-05-31 16:43:34 +00:00
|
|
|
cmd_mask = cmd_mask | HP_INTR_ENABLE;
|
|
|
|
}
|
2007-01-09 21:02:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
rc = pcie_write_cmd(slot, slot_cmd, cmd_mask);
|
2007-01-09 21:02:36 +00:00
|
|
|
slot->last_emi_toggle = get_seconds();
|
2007-08-09 23:09:33 +00:00
|
|
|
|
2007-01-09 21:02:36 +00:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static int hpc_set_attention_status(struct slot *slot, u8 value)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 slot_cmd;
|
|
|
|
u16 cmd_mask;
|
|
|
|
int rc;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
cmd_mask = ATTN_LED_CTRL;
|
2005-04-16 22:20:36 +00:00
|
|
|
switch (value) {
|
|
|
|
case 0 : /* turn off */
|
2007-05-31 16:43:34 +00:00
|
|
|
slot_cmd = 0x00C0;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case 1: /* turn on */
|
2007-05-31 16:43:34 +00:00
|
|
|
slot_cmd = 0x0040;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case 2: /* turn blink */
|
2007-05-31 16:43:34 +00:00
|
|
|
slot_cmd = 0x0080;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -1;
|
|
|
|
}
|
2007-05-31 16:43:34 +00:00
|
|
|
if (!pciehp_poll_mode) {
|
|
|
|
slot_cmd = slot_cmd | HP_INTR_ENABLE;
|
|
|
|
cmd_mask = cmd_mask | HP_INTR_ENABLE;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
rc = pcie_write_cmd(slot, slot_cmd, cmd_mask);
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x write cmd %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void hpc_set_green_led_on(struct slot *slot)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_cmd;
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 cmd_mask;
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
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;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
pcie_write_cmd(slot, slot_cmd, cmd_mask);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x write cmd %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void hpc_set_green_led_off(struct slot *slot)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_cmd;
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 cmd_mask;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
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;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
pcie_write_cmd(slot, slot_cmd, cmd_mask);
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x write cmd %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void hpc_set_green_led_blink(struct slot *slot)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_cmd;
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 cmd_mask;
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
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;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
pcie_write_cmd(slot, slot_cmd, cmd_mask);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x write cmd %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void hpc_release_ctlr(struct controller *ctrl)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
if (pciehp_poll_mode)
|
|
|
|
del_timer(&ctrl->poll_timer);
|
|
|
|
else
|
|
|
|
free_irq(ctrl->pci_dev->irq, ctrl);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-03-06 23:02:26 +00:00
|
|
|
/*
|
|
|
|
* If this is the last controller to be released, destroy the
|
|
|
|
* pciehp work queue
|
|
|
|
*/
|
|
|
|
if (atomic_dec_and_test(&pciehp_num_controllers))
|
|
|
|
destroy_workqueue(pciehp_wq);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int hpc_power_on_slot(struct slot * slot)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_cmd;
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 cmd_mask;
|
|
|
|
u16 slot_status;
|
2005-04-16 22:20:36 +00:00
|
|
|
int retval = 0;
|
|
|
|
|
2008-03-04 03:09:46 +00:00
|
|
|
dbg("%s: slot->hp_slot %x\n", __func__, slot->hp_slot);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-11-23 23:44:54 +00:00
|
|
|
/* Clear sticky power-fault bit from previous power failures */
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTSTATUS register\n", __func__);
|
2006-12-22 01:01:06 +00:00
|
|
|
return retval;
|
|
|
|
}
|
2005-11-23 23:44:54 +00:00
|
|
|
slot_status &= PWR_FAULT_DETECTED;
|
2006-12-22 01:01:06 +00:00
|
|
|
if (slot_status) {
|
|
|
|
retval = pciehp_writew(ctrl, SLOTSTATUS, slot_status);
|
|
|
|
if (retval) {
|
|
|
|
err("%s: Cannot write to SLOTSTATUS register\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__);
|
2006-12-22 01:01:06 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
slot_cmd = POWER_ON;
|
|
|
|
cmd_mask = PWR_CTRL;
|
2005-12-08 19:55:57 +00:00
|
|
|
/* Enable detection that we turned off at slot power-off time */
|
2007-05-31 16:43:34 +00:00
|
|
|
if (!pciehp_poll_mode) {
|
2005-12-08 19:55:57 +00:00
|
|
|
slot_cmd = slot_cmd |
|
|
|
|
PWR_FAULT_DETECT_ENABLE |
|
|
|
|
MRL_DETECT_ENABLE |
|
|
|
|
PRSN_DETECT_ENABLE |
|
|
|
|
HP_INTR_ENABLE;
|
2007-05-31 16:43:34 +00:00
|
|
|
cmd_mask = cmd_mask |
|
|
|
|
PWR_FAULT_DETECT_ENABLE |
|
|
|
|
MRL_DETECT_ENABLE |
|
|
|
|
PRSN_DETECT_ENABLE |
|
|
|
|
HP_INTR_ENABLE;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
retval = pcie_write_cmd(slot, slot_cmd, cmd_mask);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Write %x command failed!\n", __func__, slot_cmd);
|
2005-04-16 22:20:36 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x write cmd %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2007-12-20 10:45:09 +00:00
|
|
|
static inline int pcie_mask_bad_dllp(struct controller *ctrl)
|
|
|
|
{
|
|
|
|
struct pci_dev *dev = ctrl->pci_dev;
|
|
|
|
int pos;
|
|
|
|
u32 reg;
|
|
|
|
|
|
|
|
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
|
|
|
|
if (!pos)
|
|
|
|
return 0;
|
|
|
|
pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, ®);
|
|
|
|
if (reg & PCI_ERR_COR_BAD_DLLP)
|
|
|
|
return 0;
|
|
|
|
reg |= PCI_ERR_COR_BAD_DLLP;
|
|
|
|
pci_write_config_dword(dev, pos + PCI_ERR_COR_MASK, reg);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void pcie_unmask_bad_dllp(struct controller *ctrl)
|
|
|
|
{
|
|
|
|
struct pci_dev *dev = ctrl->pci_dev;
|
|
|
|
u32 reg;
|
|
|
|
int pos;
|
|
|
|
|
|
|
|
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
|
|
|
|
if (!pos)
|
|
|
|
return;
|
|
|
|
pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, ®);
|
|
|
|
if (!(reg & PCI_ERR_COR_BAD_DLLP))
|
|
|
|
return;
|
|
|
|
reg &= ~PCI_ERR_COR_BAD_DLLP;
|
|
|
|
pci_write_config_dword(dev, pos + PCI_ERR_COR_MASK, reg);
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static int hpc_power_off_slot(struct slot * slot)
|
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 slot_cmd;
|
2007-05-31 16:43:34 +00:00
|
|
|
u16 cmd_mask;
|
2005-04-16 22:20:36 +00:00
|
|
|
int retval = 0;
|
2007-12-20 10:45:09 +00:00
|
|
|
int changed;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-03-04 03:09:46 +00:00
|
|
|
dbg("%s: slot->hp_slot %x\n", __func__, slot->hp_slot);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-12-20 10:45:09 +00:00
|
|
|
/*
|
|
|
|
* Set Bad DLLP Mask bit in Correctable Error Mask
|
|
|
|
* Register. This is the workaround against Bad DLLP error
|
|
|
|
* that sometimes happens during turning power off the slot
|
|
|
|
* which conforms to PCI Express 1.0a spec.
|
|
|
|
*/
|
|
|
|
changed = pcie_mask_bad_dllp(ctrl);
|
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
slot_cmd = POWER_OFF;
|
|
|
|
cmd_mask = PWR_CTRL;
|
2005-12-08 19:55:57 +00:00
|
|
|
/*
|
|
|
|
* If we get MRL or presence detect interrupts now, the isr
|
|
|
|
* will notice the sticky power-fault bit too and issue power
|
|
|
|
* indicator change commands. This will lead to an endless loop
|
|
|
|
* of command completions, since the power-fault bit remains on
|
|
|
|
* till the slot is powered on again.
|
|
|
|
*/
|
2007-05-31 16:43:34 +00:00
|
|
|
if (!pciehp_poll_mode) {
|
2005-12-08 19:55:57 +00:00
|
|
|
slot_cmd = (slot_cmd &
|
|
|
|
~PWR_FAULT_DETECT_ENABLE &
|
|
|
|
~MRL_DETECT_ENABLE &
|
|
|
|
~PRSN_DETECT_ENABLE) | HP_INTR_ENABLE;
|
2007-05-31 16:43:34 +00:00
|
|
|
cmd_mask = cmd_mask |
|
|
|
|
PWR_FAULT_DETECT_ENABLE |
|
|
|
|
MRL_DETECT_ENABLE |
|
|
|
|
PRSN_DETECT_ENABLE |
|
|
|
|
HP_INTR_ENABLE;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-31 16:43:34 +00:00
|
|
|
retval = pcie_write_cmd(slot, slot_cmd, cmd_mask);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Write command failed!\n", __func__);
|
2008-03-04 21:01:14 +00:00
|
|
|
retval = -1;
|
|
|
|
goto out;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x write cmd %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-12-20 10:43:56 +00:00
|
|
|
/*
|
|
|
|
* 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);
|
2008-03-04 21:01:14 +00:00
|
|
|
out:
|
2007-12-20 10:45:09 +00:00
|
|
|
if (changed)
|
|
|
|
pcie_unmask_bad_dllp(ctrl);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2006-12-22 01:01:04 +00:00
|
|
|
static irqreturn_t pcie_isr(int irq, void *dev_id)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = (struct controller *)dev_id;
|
2008-04-25 21:38:57 +00:00
|
|
|
u16 detected, intr_loc;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
/*
|
|
|
|
* In order to guarantee that all interrupt events are
|
|
|
|
* serviced, we need to re-inspect Slot Status register after
|
|
|
|
* clearing what is presumed to be the last pending interrupt.
|
|
|
|
*/
|
|
|
|
intr_loc = 0;
|
|
|
|
do {
|
|
|
|
if (pciehp_readw(ctrl, SLOTSTATUS, &detected)) {
|
|
|
|
err("%s: Cannot read SLOTSTATUS\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return IRQ_NONE;
|
|
|
|
}
|
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
detected &= (ATTN_BUTTN_PRESSED | PWR_FAULT_DETECTED |
|
|
|
|
MRL_SENS_CHANGED | PRSN_DETECT_CHANGED |
|
|
|
|
CMD_COMPLETED);
|
|
|
|
intr_loc |= detected;
|
|
|
|
if (!intr_loc)
|
2005-04-16 22:20:36 +00:00
|
|
|
return IRQ_NONE;
|
2008-04-25 21:38:57 +00:00
|
|
|
if (pciehp_writew(ctrl, SLOTSTATUS, detected)) {
|
|
|
|
err("%s: Cannot write to SLOTSTATUS\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return IRQ_NONE;
|
|
|
|
}
|
2008-04-25 21:38:57 +00:00
|
|
|
} while (detected);
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
dbg("%s: intr_loc %x\n", __FUNCTION__, intr_loc);
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
/* Check Command Complete Interrupt Pending */
|
2005-04-16 22:20:36 +00:00
|
|
|
if (intr_loc & CMD_COMPLETED) {
|
2006-12-22 01:01:10 +00:00
|
|
|
ctrl->cmd_busy = 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
wake_up_interruptible(&ctrl->queue);
|
|
|
|
}
|
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
/* Check MRL Sensor Changed */
|
2006-12-22 01:01:04 +00:00
|
|
|
if (intr_loc & MRL_SENS_CHANGED)
|
2008-04-25 21:38:57 +00:00
|
|
|
pciehp_handle_switch_change(0, ctrl);
|
2006-12-22 01:01:04 +00:00
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
/* Check Attention Button Pressed */
|
2006-12-22 01:01:04 +00:00
|
|
|
if (intr_loc & ATTN_BUTTN_PRESSED)
|
2008-04-25 21:38:57 +00:00
|
|
|
pciehp_handle_attention_button(0, ctrl);
|
2006-12-22 01:01:04 +00:00
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
/* Check Presence Detect Changed */
|
2006-12-22 01:01:04 +00:00
|
|
|
if (intr_loc & PRSN_DETECT_CHANGED)
|
2008-04-25 21:38:57 +00:00
|
|
|
pciehp_handle_presence_change(0, ctrl);
|
2006-12-22 01:01:04 +00:00
|
|
|
|
2008-04-25 21:38:57 +00:00
|
|
|
/* Check Power Fault Detected */
|
2006-12-22 01:01:04 +00:00
|
|
|
if (intr_loc & PWR_FAULT_DETECTED)
|
2008-04-25 21:38:57 +00:00
|
|
|
pciehp_handle_power_fault(0, ctrl);
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2007-08-09 23:09:38 +00:00
|
|
|
static int hpc_get_max_lnk_speed(struct slot *slot, enum pci_bus_speed *value)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
enum pcie_link_speed lnk_speed;
|
|
|
|
u32 lnk_cap;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readl(ctrl, LNKCAP, &lnk_cap);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read LNKCAP register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (lnk_cap & 0x000F) {
|
|
|
|
case 1:
|
|
|
|
lnk_speed = PCIE_2PT5GB;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
lnk_speed = PCIE_LNK_SPEED_UNKNOWN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
*value = lnk_speed;
|
|
|
|
dbg("Max link speed = %d\n", lnk_speed);
|
2007-08-09 23:09:33 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2007-08-09 23:09:38 +00:00
|
|
|
static int hpc_get_max_lnk_width(struct slot *slot,
|
|
|
|
enum pcie_link_width *value)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
enum pcie_link_width lnk_wdth;
|
|
|
|
u32 lnk_cap;
|
|
|
|
int retval = 0;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readl(ctrl, LNKCAP, &lnk_cap);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read LNKCAP register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch ((lnk_cap & 0x03F0) >> 4){
|
|
|
|
case 0:
|
|
|
|
lnk_wdth = PCIE_LNK_WIDTH_RESRV;
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
lnk_wdth = PCIE_LNK_X1;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
lnk_wdth = PCIE_LNK_X2;
|
|
|
|
break;
|
|
|
|
case 4:
|
|
|
|
lnk_wdth = PCIE_LNK_X4;
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
lnk_wdth = PCIE_LNK_X8;
|
|
|
|
break;
|
|
|
|
case 12:
|
|
|
|
lnk_wdth = PCIE_LNK_X12;
|
|
|
|
break;
|
|
|
|
case 16:
|
|
|
|
lnk_wdth = PCIE_LNK_X16;
|
|
|
|
break;
|
|
|
|
case 32:
|
|
|
|
lnk_wdth = PCIE_LNK_X32;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
lnk_wdth = PCIE_LNK_WIDTH_UNKNOWN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
*value = lnk_wdth;
|
|
|
|
dbg("Max link width = %d\n", lnk_wdth);
|
2007-08-09 23:09:33 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2007-08-09 23:09:38 +00:00
|
|
|
static int hpc_get_cur_lnk_speed(struct slot *slot, enum pci_bus_speed *value)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
enum pcie_link_speed lnk_speed = PCI_SPEED_UNKNOWN;
|
|
|
|
int retval = 0;
|
|
|
|
u16 lnk_status;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read LNKSTATUS register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (lnk_status & 0x0F) {
|
|
|
|
case 1:
|
|
|
|
lnk_speed = PCIE_2PT5GB;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
lnk_speed = PCIE_LNK_SPEED_UNKNOWN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
*value = lnk_speed;
|
|
|
|
dbg("Current link speed = %d\n", lnk_speed);
|
2007-08-09 23:09:33 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2007-08-09 23:09:38 +00:00
|
|
|
static int hpc_get_cur_lnk_width(struct slot *slot,
|
|
|
|
enum pcie_link_width *value)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-22 01:01:04 +00:00
|
|
|
struct controller *ctrl = slot->ctrl;
|
2005-04-16 22:20:36 +00:00
|
|
|
enum pcie_link_width lnk_wdth = PCIE_LNK_WIDTH_UNKNOWN;
|
|
|
|
int retval = 0;
|
|
|
|
u16 lnk_status;
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read LNKSTATUS register\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
switch ((lnk_status & 0x03F0) >> 4){
|
|
|
|
case 0:
|
|
|
|
lnk_wdth = PCIE_LNK_WIDTH_RESRV;
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
lnk_wdth = PCIE_LNK_X1;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
lnk_wdth = PCIE_LNK_X2;
|
|
|
|
break;
|
|
|
|
case 4:
|
|
|
|
lnk_wdth = PCIE_LNK_X4;
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
lnk_wdth = PCIE_LNK_X8;
|
|
|
|
break;
|
|
|
|
case 12:
|
|
|
|
lnk_wdth = PCIE_LNK_X12;
|
|
|
|
break;
|
|
|
|
case 16:
|
|
|
|
lnk_wdth = PCIE_LNK_X16;
|
|
|
|
break;
|
|
|
|
case 32:
|
|
|
|
lnk_wdth = PCIE_LNK_X32;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
lnk_wdth = PCIE_LNK_WIDTH_UNKNOWN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
*value = lnk_wdth;
|
|
|
|
dbg("Current link width = %d\n", lnk_wdth);
|
2007-08-09 23:09:33 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct hpc_ops pciehp_hpc_ops = {
|
|
|
|
.power_on_slot = hpc_power_on_slot,
|
|
|
|
.power_off_slot = hpc_power_off_slot,
|
|
|
|
.set_attention_status = hpc_set_attention_status,
|
|
|
|
.get_power_status = hpc_get_power_status,
|
|
|
|
.get_attention_status = hpc_get_attention_status,
|
|
|
|
.get_latch_status = hpc_get_latch_status,
|
|
|
|
.get_adapter_status = hpc_get_adapter_status,
|
2007-01-09 21:02:36 +00:00
|
|
|
.get_emi_status = hpc_get_emi_status,
|
|
|
|
.toggle_emi = hpc_toggle_emi,
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
.get_max_bus_speed = hpc_get_max_lnk_speed,
|
|
|
|
.get_cur_bus_speed = hpc_get_cur_lnk_speed,
|
|
|
|
.get_max_lnk_width = hpc_get_max_lnk_width,
|
|
|
|
.get_cur_lnk_width = hpc_get_cur_lnk_width,
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
.query_power_fault = hpc_query_power_fault,
|
|
|
|
.green_led_on = hpc_set_green_led_on,
|
|
|
|
.green_led_off = hpc_set_green_led_off,
|
|
|
|
.green_led_blink = hpc_set_green_led_blink,
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
.release_ctlr = hpc_release_ctlr,
|
|
|
|
.check_lnk_status = hpc_check_lnk_status,
|
|
|
|
};
|
|
|
|
|
2006-03-03 18:16:05 +00:00
|
|
|
#ifdef CONFIG_ACPI
|
|
|
|
int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
acpi_handle chandle, handle = DEVICE_ACPI_HANDLE(&(dev->dev));
|
|
|
|
struct pci_dev *pdev = dev;
|
|
|
|
struct pci_bus *parent;
|
2006-03-17 00:18:39 +00:00
|
|
|
struct acpi_buffer string = { ACPI_ALLOCATE_BUFFER, NULL };
|
2006-03-03 18:16:05 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Per PCI firmware specification, we should run the ACPI _OSC
|
|
|
|
* method to get control of hotplug hardware before using it.
|
|
|
|
* If an _OSC is missing, we look for an OSHP to do the same thing.
|
|
|
|
* To handle different BIOS behavior, we look for _OSC and OSHP
|
|
|
|
* within the scope of the hotplug controller and its parents, upto
|
|
|
|
* the host bridge under which this controller exists.
|
|
|
|
*/
|
|
|
|
while (!handle) {
|
|
|
|
/*
|
|
|
|
* This hotplug controller was not listed in the ACPI name
|
|
|
|
* space at all. Try to get acpi handle of parent pci bus.
|
|
|
|
*/
|
|
|
|
if (!pdev || !pdev->bus->parent)
|
|
|
|
break;
|
|
|
|
parent = pdev->bus->parent;
|
|
|
|
dbg("Could not find %s in acpi namespace, trying parent\n",
|
|
|
|
pci_name(pdev));
|
|
|
|
if (!parent->self)
|
|
|
|
/* Parent must be a host bridge */
|
|
|
|
handle = acpi_get_pci_rootbridge_handle(
|
|
|
|
pci_domain_nr(parent),
|
|
|
|
parent->number);
|
|
|
|
else
|
|
|
|
handle = DEVICE_ACPI_HANDLE(
|
|
|
|
&(parent->self->dev));
|
|
|
|
pdev = parent->self;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (handle) {
|
2006-03-17 00:18:39 +00:00
|
|
|
acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);
|
|
|
|
dbg("Trying to get hotplug control for %s \n",
|
|
|
|
(char *)string.pointer);
|
2006-03-03 18:16:05 +00:00
|
|
|
status = pci_osc_control_set(handle,
|
2007-08-09 23:09:32 +00:00
|
|
|
OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL |
|
2006-03-03 18:16:05 +00:00
|
|
|
OSC_PCI_EXPRESS_NATIVE_HP_CONTROL);
|
|
|
|
if (status == AE_NOT_FOUND)
|
|
|
|
status = acpi_run_oshp(handle);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
dbg("Gained control for hotplug HW for pci %s (%s)\n",
|
2006-03-17 00:18:39 +00:00
|
|
|
pci_name(dev), (char *)string.pointer);
|
2006-04-18 21:36:43 +00:00
|
|
|
kfree(string.pointer);
|
2006-03-03 18:16:05 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (acpi_root_bridge(handle))
|
|
|
|
break;
|
|
|
|
chandle = handle;
|
|
|
|
status = acpi_get_parent(chandle, &handle);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
err("Cannot get control of hotplug hardware for pci %s\n",
|
|
|
|
pci_name(dev));
|
2006-03-17 00:18:39 +00:00
|
|
|
|
2006-04-18 21:36:43 +00:00
|
|
|
kfree(string.pointer);
|
2006-03-03 18:16:05 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2007-11-21 23:07:55 +00:00
|
|
|
static int pcie_init_hardware_part1(struct controller *ctrl,
|
|
|
|
struct pcie_device *dev)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
u16 temp_word;
|
|
|
|
u32 slot_cap;
|
2007-11-28 23:11:46 +00:00
|
|
|
u16 slot_status;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_readl(ctrl, SLOTCAP, &slot_cap);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCAP register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
return -1;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Mask Hot-plug Interrupt Enable */
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCTRL register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
return -1;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
dbg("%s: SLOTCTRL %x value read %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, temp_word);
|
2007-08-09 23:09:38 +00:00
|
|
|
temp_word = (temp_word & ~HP_INTR_ENABLE & ~CMD_CMPL_INTR_ENABLE) |
|
|
|
|
0x00;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot write to SLOTCTRL register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
return -1;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTSTATUS register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
return -1;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
temp_word = 0x1F; /* Clear all events */
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot write to SLOTSTATUS register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
return -1;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2007-11-21 23:07:55 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2005-11-01 00:20:10 +00:00
|
|
|
|
2007-11-21 23:07:55 +00:00
|
|
|
int pcie_init_hardware_part2(struct controller *ctrl, struct pcie_device *dev)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
u16 temp_word;
|
|
|
|
u16 intr_enable = 0;
|
|
|
|
u32 slot_cap;
|
|
|
|
u16 slot_status;
|
2007-03-06 23:02:26 +00:00
|
|
|
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCTRL register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
goto abort;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
intr_enable = intr_enable | PRSN_DETECT_ENABLE;
|
|
|
|
|
2007-11-21 23:07:55 +00:00
|
|
|
rc = pciehp_readl(ctrl, SLOTCAP, &slot_cap);
|
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCAP register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
if (ATTN_BUTTN(slot_cap))
|
|
|
|
intr_enable = intr_enable | ATTN_BUTTN_ENABLE;
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
if (POWER_CTRL(slot_cap))
|
|
|
|
intr_enable = intr_enable | PWR_FAULT_DETECT_ENABLE;
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
if (MRL_SENS(slot_cap))
|
|
|
|
intr_enable = intr_enable | MRL_DETECT_ENABLE;
|
|
|
|
|
2007-08-09 23:09:34 +00:00
|
|
|
temp_word = (temp_word & ~intr_enable) | intr_enable;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (pciehp_poll_mode) {
|
|
|
|
temp_word = (temp_word & ~HP_INTR_ENABLE) | 0x0;
|
|
|
|
} else {
|
|
|
|
temp_word = (temp_word & ~HP_INTR_ENABLE) | HP_INTR_ENABLE;
|
|
|
|
}
|
|
|
|
|
2007-08-09 23:09:38 +00:00
|
|
|
/*
|
|
|
|
* Unmask Hot-plug Interrupt Enable for the interrupt
|
|
|
|
* notification mechanism case.
|
|
|
|
*/
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot write to SLOTCTRL register\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
goto abort;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTSTATUS register\n", __func__);
|
2006-05-09 07:50:31 +00:00
|
|
|
goto abort_disable_intr;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
temp_word = 0x1F; /* Clear all events */
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot write to SLOTSTATUS register\n", __func__);
|
2006-05-09 07:50:31 +00:00
|
|
|
goto abort_disable_intr;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2007-08-09 23:09:34 +00:00
|
|
|
|
2005-11-01 00:20:12 +00:00
|
|
|
if (pciehp_force) {
|
|
|
|
dbg("Bypassing BIOS check for pciehp use on %s\n",
|
|
|
|
pci_name(ctrl->pci_dev));
|
|
|
|
} else {
|
2005-11-07 21:37:36 +00:00
|
|
|
rc = pciehp_get_hp_hw_control_from_firmware(ctrl->pci_dev);
|
2005-11-01 00:20:12 +00:00
|
|
|
if (rc)
|
2006-05-09 07:50:31 +00:00
|
|
|
goto abort_disable_intr;
|
2005-11-01 00:20:12 +00:00
|
|
|
}
|
2005-11-01 00:20:07 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return 0;
|
|
|
|
|
2007-08-09 23:09:38 +00:00
|
|
|
/* We end up here for the many possible ways to fail this API. */
|
2006-05-09 07:50:31 +00:00
|
|
|
abort_disable_intr:
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
|
2006-05-09 07:50:31 +00:00
|
|
|
if (!rc) {
|
|
|
|
temp_word &= ~(intr_enable | HP_INTR_ENABLE);
|
2006-12-22 01:01:06 +00:00
|
|
|
rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
|
2006-05-09 07:50:31 +00:00
|
|
|
}
|
|
|
|
if (rc)
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s : disabling interrupts failed\n", __func__);
|
2007-11-21 23:07:55 +00:00
|
|
|
abort:
|
2005-04-16 22:20:36 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2007-11-28 23:11:46 +00:00
|
|
|
|
|
|
|
int pcie_init(struct controller *ctrl, struct pcie_device *dev)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
u16 cap_reg;
|
|
|
|
u32 slot_cap;
|
|
|
|
int cap_base;
|
|
|
|
u16 slot_status, slot_ctrl;
|
|
|
|
struct pci_dev *pdev;
|
|
|
|
|
|
|
|
pdev = dev->port;
|
|
|
|
ctrl->pci_dev = pdev; /* save pci_dev in context */
|
|
|
|
|
|
|
|
dbg("%s: hotplug controller vendor id 0x%x device id 0x%x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, pdev->vendor, pdev->device);
|
2007-11-28 23:11:46 +00:00
|
|
|
|
|
|
|
cap_base = pci_find_capability(pdev, PCI_CAP_ID_EXP);
|
|
|
|
if (cap_base == 0) {
|
2008-03-04 03:09:46 +00:00
|
|
|
dbg("%s: Can't find PCI_CAP_ID_EXP (0x10)\n", __func__);
|
2007-11-28 23:11:46 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
|
|
|
|
ctrl->cap_base = cap_base;
|
|
|
|
|
2008-03-04 03:09:46 +00:00
|
|
|
dbg("%s: pcie_cap_base %x\n", __func__, cap_base);
|
2007-11-28 23:11:46 +00:00
|
|
|
|
|
|
|
rc = pciehp_readw(ctrl, CAPREG, &cap_reg);
|
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read CAPREG register\n", __func__);
|
2007-11-28 23:11:46 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
dbg("%s: CAPREG offset %x cap_reg %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + CAPREG, cap_reg);
|
2007-11-28 23:11:46 +00:00
|
|
|
|
|
|
|
if (((cap_reg & SLOT_IMPL) == 0) ||
|
|
|
|
(((cap_reg & DEV_PORT_TYPE) != 0x0040)
|
|
|
|
&& ((cap_reg & DEV_PORT_TYPE) != 0x0060))) {
|
|
|
|
dbg("%s : This is not a root port or the port is not "
|
2008-03-04 03:09:46 +00:00
|
|
|
"connected to a slot\n", __func__);
|
2007-11-28 23:11:46 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = pciehp_readl(ctrl, SLOTCAP, &slot_cap);
|
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCAP register\n", __func__);
|
2007-11-28 23:11:46 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
dbg("%s: SLOTCAP offset %x slot_cap %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCAP, slot_cap);
|
2007-11-28 23:11:46 +00:00
|
|
|
|
|
|
|
if (!(slot_cap & HP_CAP)) {
|
2008-03-04 03:09:46 +00:00
|
|
|
dbg("%s : This slot is not hot-plug capable\n", __func__);
|
2007-11-28 23:11:46 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
/* For debugging purpose */
|
|
|
|
rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
|
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTSTATUS register\n", __func__);
|
2007-11-28 23:11:46 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
dbg("%s: SLOTSTATUS offset %x slot_status %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTSTATUS, slot_status);
|
2007-11-28 23:11:46 +00:00
|
|
|
|
|
|
|
rc = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
|
|
|
|
if (rc) {
|
2008-03-04 03:09:46 +00:00
|
|
|
err("%s: Cannot read SLOTCTRL register\n", __func__);
|
2007-11-28 23:11:46 +00:00
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
dbg("%s: SLOTCTRL offset %x slot_ctrl %x\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->cap_base + SLOTCTRL, slot_ctrl);
|
2007-11-28 23:11:46 +00:00
|
|
|
|
|
|
|
for (rc = 0; rc < DEVICE_COUNT_RESOURCE; rc++)
|
|
|
|
if (pci_resource_len(pdev, rc) > 0)
|
|
|
|
dbg("pci resource[%d] start=0x%llx(len=0x%llx)\n", rc,
|
|
|
|
(unsigned long long)pci_resource_start(pdev, rc),
|
|
|
|
(unsigned long long)pci_resource_len(pdev, rc));
|
|
|
|
|
|
|
|
info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n",
|
|
|
|
pdev->vendor, pdev->device,
|
|
|
|
pdev->subsystem_vendor, pdev->subsystem_device);
|
|
|
|
|
|
|
|
mutex_init(&ctrl->crit_sect);
|
|
|
|
mutex_init(&ctrl->ctrl_lock);
|
|
|
|
|
|
|
|
/* setup wait queue */
|
|
|
|
init_waitqueue_head(&ctrl->queue);
|
|
|
|
|
|
|
|
/* return PCI Controller Info */
|
|
|
|
ctrl->slot_device_offset = 0;
|
|
|
|
ctrl->num_slots = 1;
|
|
|
|
ctrl->first_slot = slot_cap >> 19;
|
|
|
|
ctrl->ctrlcap = slot_cap & 0x0000007f;
|
|
|
|
|
2007-11-21 23:07:55 +00:00
|
|
|
rc = pcie_init_hardware_part1(ctrl, dev);
|
|
|
|
if (rc)
|
|
|
|
goto abort;
|
|
|
|
|
|
|
|
if (pciehp_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 = request_irq(ctrl->pci_dev->irq, pcie_isr, IRQF_SHARED,
|
|
|
|
MY_NAME, (void *)ctrl);
|
|
|
|
dbg("%s: request_irq %d for hpc%d (returns %d)\n",
|
2008-03-04 03:09:46 +00:00
|
|
|
__func__, ctrl->pci_dev->irq,
|
2007-11-21 23:07:55 +00:00
|
|
|
atomic_read(&pciehp_num_controllers), rc);
|
|
|
|
if (rc) {
|
|
|
|
err("Can't get irq %d for the hotplug controller\n",
|
|
|
|
ctrl->pci_dev->irq);
|
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
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);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If this is the first controller to be initialized,
|
|
|
|
* initialize the pciehp work queue
|
|
|
|
*/
|
|
|
|
if (atomic_add_return(1, &pciehp_num_controllers) == 1) {
|
|
|
|
pciehp_wq = create_singlethread_workqueue("pciehpd");
|
|
|
|
if (!pciehp_wq) {
|
|
|
|
rc = -ENOMEM;
|
|
|
|
goto abort_free_irq;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = pcie_init_hardware_part2(ctrl, dev);
|
2007-11-28 23:11:46 +00:00
|
|
|
if (rc == 0) {
|
|
|
|
ctrl->hpc_ops = &pciehp_hpc_ops;
|
|
|
|
return 0;
|
|
|
|
}
|
2007-11-21 23:07:55 +00:00
|
|
|
abort_free_irq:
|
|
|
|
if (pciehp_poll_mode)
|
|
|
|
del_timer_sync(&ctrl->poll_timer);
|
|
|
|
else
|
|
|
|
free_irq(ctrl->pci_dev->irq, ctrl);
|
2007-11-28 23:11:46 +00:00
|
|
|
abort:
|
|
|
|
return -1;
|
|
|
|
}
|