diff options
Diffstat (limited to 'drivers/pci/hotplug/shpchp_hpc.c')
| -rw-r--r-- | drivers/pci/hotplug/shpchp_hpc.c | 1620 |
1 files changed, 1620 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c new file mode 100644 index 00000000000..38c5d906669 --- /dev/null +++ b/drivers/pci/hotplug/shpchp_hpc.c @@ -0,0 +1,1620 @@ +/* + * Standard 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. + * + * Send feedback to <greg@kroah.com>,<dely.l.sy@intel.com> + * + */ + +#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/delay.h> +#include <linux/pci.h> +#include <asm/system.h> +#include "shpchp.h" + +#ifdef DEBUG +#define DBG_K_TRACE_ENTRY ((unsigned int)0x00000001) /* On function entry */ +#define DBG_K_TRACE_EXIT ((unsigned int)0x00000002) /* On function exit */ +#define DBG_K_INFO ((unsigned int)0x00000004) /* Info messages */ +#define DBG_K_ERROR ((unsigned int)0x00000008) /* Error messages */ +#define DBG_K_TRACE (DBG_K_TRACE_ENTRY|DBG_K_TRACE_EXIT) +#define DBG_K_STANDARD (DBG_K_INFO|DBG_K_ERROR|DBG_K_TRACE) +/* Redefine this flagword to set debug level */ +#define DEBUG_LEVEL DBG_K_STANDARD + +#define DEFINE_DBG_BUFFER char __dbg_str_buf[256]; + +#define DBG_PRINT( dbg_flags, args... ) \ + do { \ + if ( DEBUG_LEVEL & ( dbg_flags ) ) \ + { \ + int len; \ + len = sprintf( __dbg_str_buf, "%s:%d: %s: ", \ + __FILE__, __LINE__, __FUNCTION__ ); \ + sprintf( __dbg_str_buf + len, args ); \ + printk( KERN_NOTICE "%s\n", __dbg_str_buf ); \ + } \ + } while (0) + +#define DBG_ENTER_ROUTINE DBG_PRINT (DBG_K_TRACE_ENTRY, "%s", "[Entry]"); +#define DBG_LEAVE_ROUTINE DBG_PRINT (DBG_K_TRACE_EXIT, "%s", "[Exit]"); +#else +#define DEFINE_DBG_BUFFER +#define DBG_ENTER_ROUTINE +#define DBG_LEAVE_ROUTINE +#endif /* DEBUG */ + +/* Slot Available Register I field definition */ +#define SLOT_33MHZ 0x0000001f +#define SLOT_66MHZ_PCIX 0x00001f00 +#define SLOT_100MHZ_PCIX 0x001f0000 +#define SLOT_133MHZ_PCIX 0x1f000000 + +/* Slot Available Register II field definition */ +#define SLOT_66MHZ 0x0000001f +#define SLOT_66MHZ_PCIX_266 0x00000f00 +#define SLOT_100MHZ_PCIX_266 0x0000f000 +#define SLOT_133MHZ_PCIX_266 0x000f0000 +#define SLOT_66MHZ_PCIX_533 0x00f00000 +#define SLOT_100MHZ_PCIX_533 0x0f000000 +#define SLOT_133MHZ_PCIX_533 0xf0000000 + + +/* Secondary Bus Configuration Register */ +/* For PI = 1, Bits 0 to 2 have been encoded as follows to show current bus speed/mode */ +#define PCI_33MHZ 0x0 +#define PCI_66MHZ 0x1 +#define PCIX_66MHZ 0x2 +#define PCIX_100MHZ 0x3 +#define PCIX_133MHZ 0x4 + +/* For PI = 2, Bits 0 to 3 have been encoded as follows to show current bus speed/mode */ +#define PCI_33MHZ 0x0 +#define PCI_66MHZ 0x1 +#define PCIX_66MHZ 0x2 +#define PCIX_100MHZ 0x3 +#define PCIX_133MHZ 0x4 +#define PCIX_66MHZ_ECC 0x5 +#define PCIX_100MHZ_ECC 0x6 +#define PCIX_133MHZ_ECC 0x7 +#define PCIX_66MHZ_266 0x9 +#define PCIX_100MHZ_266 0xa +#define PCIX_133MHZ_266 0xb +#define PCIX_66MHZ_533 0x11 +#define PCIX_100MHZ_533 0x12 +#define PCIX_133MHZ_533 0x13 + +/* Slot Configuration */ +#define SLOT_NUM 0x0000001F +#define FIRST_DEV_NUM 0x00001F00 +#define PSN 0x07FF0000 +#define UPDOWN 0x20000000 +#define MRLSENSOR 0x40000000 +#define ATTN_BUTTON 0x80000000 + +/* Slot Status Field Definitions */ +/* Slot State */ +#define PWR_ONLY 0x0001 +#define ENABLED 0x0002 +#define DISABLED 0x0003 + +/* Power Indicator State */ +#define PWR_LED_ON 0x0004 +#define PWR_LED_BLINK 0x0008 +#define PWR_LED_OFF 0x000c + +/* Attention Indicator State */ +#define ATTEN_LED_ON 0x0010 +#define ATTEN_LED_BLINK 0x0020 +#define ATTEN_LED_OFF 0x0030 + +/* Power Fault */ +#define pwr_fault 0x0040 + +/* Attention Button */ +#define ATTEN_BUTTON 0x0080 + +/* MRL Sensor */ +#define MRL_SENSOR 0x0100 + +/* 66 MHz Capable */ +#define IS_66MHZ_CAP 0x0200 + +/* PRSNT1#/PRSNT2# */ +#define SLOT_EMP 0x0c00 + +/* PCI-X Capability */ +#define NON_PCIX 0x0000 +#define PCIX_66 0x1000 +#define PCIX_133 0x3000 +#define PCIX_266 0x4000 /* For PI = 2 only */ +#define PCIX_533 0x5000 /* For PI = 2 only */ + +/* SHPC 'write' operations/commands */ + +/* Slot operation - 0x00h to 0x3Fh */ + +#define NO_CHANGE 0x00 + +/* Slot state - Bits 0 & 1 of controller command register */ +#define SET_SLOT_PWR 0x01 +#define SET_SLOT_ENABLE 0x02 +#define SET_SLOT_DISABLE 0x03 + +/* Power indicator state - Bits 2 & 3 of controller command register*/ +#define SET_PWR_ON 0x04 +#define SET_PWR_BLINK 0x08 +#define SET_PWR_OFF 0x0C + +/* Attention indicator state - Bits 4 & 5 of controller command register*/ +#define SET_ATTN_ON 0x010 +#define SET_ATTN_BLINK 0x020 +#define SET_ATTN_OFF 0x030 + +/* Set bus speed/mode A - 0x40h to 0x47h */ +#define SETA_PCI_33MHZ 0x40 +#define SETA_PCI_66MHZ 0x41 +#define SETA_PCIX_66MHZ 0x42 +#define SETA_PCIX_100MHZ 0x43 +#define SETA_PCIX_133MHZ 0x44 +#define RESERV_1 0x45 +#define RESERV_2 0x46 +#define RESERV_3 0x47 + +/* Set bus speed/mode B - 0x50h to 0x5fh */ +#define SETB_PCI_33MHZ 0x50 +#define SETB_PCI_66MHZ 0x51 +#define SETB_PCIX_66MHZ_PM 0x52 +#define SETB_PCIX_100MHZ_PM 0x53 +#define SETB_PCIX_133MHZ_PM 0x54 +#define SETB_PCIX_66MHZ_EM 0x55 +#define SETB_PCIX_100MHZ_EM 0x56 +#define SETB_PCIX_133MHZ_EM 0x57 +#define SETB_PCIX_66MHZ_266 0x58 +#define SETB_PCIX_100MHZ_266 0x59 +#define SETB_PCIX_133MHZ_266 0x5a +#define SETB_PCIX_66MHZ_533 0x5b +#define SETB_PCIX_100MHZ_533 0x5c +#define SETB_PCIX_133MHZ_533 0x5d + + +/* Power-on all slots - 0x48h */ +#define SET_PWR_ON_ALL 0x48 + +/* Enable all slots - 0x49h */ +#define SET_ENABLE_ALL 0x49 + +/* SHPC controller command error code */ +#define SWITCH_OPEN 0x1 +#define INVALID_CMD 0x2 +#define INVALID_SPEED_MODE 0x4 + +/* For accessing SHPC Working Register Set */ +#define DWORD_SELECT 0x2 +#define DWORD_DATA 0x4 +#define BASE_OFFSET 0x0 + +/* Field Offset in Logical Slot Register - byte boundary */ +#define SLOT_EVENT_LATCH 0x2 +#define SLOT_SERR_INT_MASK 0x3 + +static spinlock_t hpc_event_lock; + +DEFINE_DBG_BUFFER /* Debug string buffer for entire HPC defined here */ +static struct php_ctlr_state_s *php_ctlr_list_head; /* HPC state linked list */ +static int ctlr_seq_num = 0; /* Controller sequenc # */ +static spinlock_t list_lock; + +static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs); + +static void start_int_poll_timer(struct php_ctlr_state_s *php_ctlr, int seconds); + +/* This is the interrupt polling timeout function. */ +static void int_poll_timeout(unsigned long lphp_ctlr) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *)lphp_ctlr; + + DBG_ENTER_ROUTINE + + if ( !php_ctlr ) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return; + } + + /* Poll for interrupt events. regs == NULL => polling */ + shpc_isr( 0, (void *)php_ctlr, NULL ); + + init_timer(&php_ctlr->int_poll_timer); + if (!shpchp_poll_time) + shpchp_poll_time = 2; /* reset timer to poll in 2 secs if user doesn't specify at module installation*/ + + start_int_poll_timer(php_ctlr, shpchp_poll_time); + + return; +} + +/* This function starts the interrupt polling timer. */ +static void start_int_poll_timer(struct php_ctlr_state_s *php_ctlr, int seconds) +{ + if (!php_ctlr) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return; + } + + if ( ( seconds <= 0 ) || ( seconds > 60 ) ) + seconds = 2; /* Clamp to sane value */ + + php_ctlr->int_poll_timer.function = &int_poll_timeout; + php_ctlr->int_poll_timer.data = (unsigned long)php_ctlr; /* Instance data */ + php_ctlr->int_poll_timer.expires = jiffies + seconds * HZ; + add_timer(&php_ctlr->int_poll_timer); + + return; +} + +static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u16 cmd_status; + int retval = 0; + u16 temp_word; + int i; + + DBG_ENTER_ROUTINE + + if (!php_ctlr) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + for (i = 0; i < 10; i++) { + cmd_status = readw(php_ctlr->creg + CMD_STATUS); + + if (!(cmd_status & 0x1)) + break; + /* Check every 0.1 sec for a total of 1 sec*/ + msleep(100); + } + + cmd_status = readw(php_ctlr->creg + CMD_STATUS); + + if (cmd_status & 0x1) { + /* After 1 sec and and the controller is still busy */ + err("%s : Controller is still busy after 1 sec.\n", __FUNCTION__); + return -1; + } + + ++t_slot; + temp_word = (t_slot << 8) | (cmd & 0xFF); + dbg("%s: t_slot %x cmd %x\n", __FUNCTION__, t_slot, cmd); + + /* To make sure the Controller Busy bit is 0 before we send out the + * command. + */ + writew(temp_word, php_ctlr->creg + CMD); + dbg("%s: temp_word written %x\n", __FUNCTION__, temp_word); + + DBG_LEAVE_ROUTINE + return retval; +} + +static int hpc_check_cmd_status(struct controller *ctrl) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) ctrl->hpc_ctlr_handle; + u16 cmd_status; + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + cmd_status = readw(php_ctlr->creg + CMD_STATUS) & 0x000F; + + switch (cmd_status >> 1) { + case 0: + retval = 0; + break; + case 1: + retval = SWITCH_OPEN; + err("%s: Switch opened!\n", __FUNCTION__); + break; + case 2: + retval = INVALID_CMD; + err("%s: Invalid HPC command!\n", __FUNCTION__); + break; + case 4: + retval = INVALID_SPEED_MODE; + err("%s: Invalid bus speed/mode!\n", __FUNCTION__); + break; + default: + retval = cmd_status; + } + + DBG_LEAVE_ROUTINE + return retval; +} + + +static int hpc_get_attention_status(struct slot *slot, u8 *status) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u32 slot_reg; + u16 slot_status; + u8 atten_led_state; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot)); + slot_status = (u16) slot_reg; + atten_led_state = (slot_status & 0x0030) >> 4; + + 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; + } + + DBG_LEAVE_ROUTINE + return 0; +} + +static int hpc_get_power_status(struct slot * slot, u8 *status) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u32 slot_reg; + u16 slot_status; + u8 slot_state; + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot)); + slot_status = (u16) slot_reg; + slot_state = (slot_status & 0x0003); + + switch (slot_state) { + case 0: + *status = 0xFF; + break; + case 1: + *status = 2; /* Powered only */ + break; + case 2: + *status = 1; /* Enabled */ + break; + case 3: + *status = 0; /* Disabled */ + break; + default: + *status = 0xFF; + break; + } + + DBG_LEAVE_ROUTINE + return retval; +} + + +static int hpc_get_latch_status(struct slot *slot, u8 *status) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u32 slot_reg; + u16 slot_status; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot)); + slot_status = (u16)slot_reg; + + *status = ((slot_status & 0x0100) == 0) ? 0 : 1; /* 0 -> close; 1 -> open */ + + + DBG_LEAVE_ROUTINE + return 0; +} + +static int hpc_get_adapter_status(struct slot *slot, u8 *status) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u32 slot_reg; + u16 slot_status; + u8 card_state; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot)); + slot_status = (u16)slot_reg; + card_state = (u8)((slot_status & 0x0C00) >> 10); + *status = (card_state != 0x3) ? 1 : 0; + + DBG_LEAVE_ROUTINE + return 0; +} + +static int hpc_get_prog_int(struct slot *slot, u8 *prog_int) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + *prog_int = readb(php_ctlr->creg + PROG_INTERFACE); + + DBG_LEAVE_ROUTINE + return 0; +} + +static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u32 slot_reg; + u16 slot_status, sec_bus_status; + u8 m66_cap, pcix_cap, pi; + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return -1; + } + + pi = readb(php_ctlr->creg + PROG_INTERFACE); + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot)); + dbg("%s: pi = %d, slot_reg = %x\n", __FUNCTION__, pi, slot_reg); + slot_status = (u16) slot_reg; + dbg("%s: slot_status = %x\n", __FUNCTION__, slot_status); + sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG); + + pcix_cap = (u8) ((slot_status & 0x3000) >> 12); + dbg("%s: pcix_cap = %x\n", __FUNCTION__, pcix_cap); + m66_cap = (u8) ((slot_status & 0x0200) >> 9); + dbg("%s: m66_cap = %x\n", __FUNCTION__, m66_cap); + + + if (pi == 2) { + switch (pcix_cap) { + case 0: + *value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz; + break; + case 1: + *value = PCI_SPEED_66MHz_PCIX; + break; + case 3: + *value = PCI_SPEED_133MHz_PCIX; + break; + case 4: + *value = PCI_SPEED_133MHz_PCIX_266; + break; + case 5: + *value = PCI_SPEED_133MHz_PCIX_533; + break; + case 2: /* Reserved */ + default: + *value = PCI_SPEED_UNKNOWN; + retval = -ENODEV; + break; + } + } else { + switch (pcix_cap) { + case 0: + *value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz; + break; + case 1: + *value = PCI_SPEED_66MHz_PCIX; + break; + case 3: + *value = PCI_SPEED_133MHz_PCIX; + break; + case 2: /* Reserved */ + default: + *value = PCI_SPEED_UNKNOWN; + retval = -ENODEV; + break; + } + } + + dbg("Adapter speed = %d\n", *value); + + DBG_LEAVE_ROUTINE + return retval; +} + +static int hpc_get_mode1_ECC_cap(struct slot *slot, u8 *mode) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u16 sec_bus_status; + u8 pi; + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + pi = readb(php_ctlr->creg + PROG_INTERFACE); + sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG); + + if (pi == 2) { + *mode = (sec_bus_status & 0x0100) >> 7; + } else { + retval = -1; + } + + dbg("Mode 1 ECC cap = %d\n", *mode); + + DBG_LEAVE_ROUTINE + return retval; +} + +static int hpc_query_power_fault(struct slot * slot) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u32 slot_reg; + u16 slot_status; + u8 pwr_fault_state, status; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot)); + slot_status = (u16) slot_reg; + pwr_fault_state = (slot_status & 0x0040) >> 7; + status = (pwr_fault_state == 1) ? 0 : 1; + + DBG_LEAVE_ROUTINE + /* Note: Logic 0 => fault */ + return status; +} + +static int hpc_set_attention_status(struct slot *slot, u8 value) +{ + struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u8 slot_cmd = 0; + int rc = 0; + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return -1; + } + + switch (value) { + case 0 : + slot_cmd = 0x30; /* OFF */ + break; + case 1: + slot_cmd = 0x10; /* ON */ + break; + case 2: + slot_cmd = 0x20; /* BLINK */ + break; + default: + return -1; + } + + shpc_write_cmd(slot, slot->hp_slot, slot_cmd); + + return rc; +} + + +static void hpc_set_green_led_on(struct slot *slot) +{ + struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u8 slot_cmd; + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return ; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return ; + } + + slot_cmd = 0x04; + + shpc_write_cmd(slot, slot->hp_slot, slot_cmd); + + return; +} + +static void hpc_set_green_led_off(struct slot *slot) +{ + struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u8 slot_cmd; + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return ; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return ; + } + + slot_cmd = 0x0C; + + shpc_write_cmd(slot, slot->hp_slot, slot_cmd); + + return; +} + +static void hpc_set_green_led_blink(struct slot *slot) +{ + struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u8 slot_cmd; + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return ; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return ; + } + + slot_cmd = 0x08; + + shpc_write_cmd(slot, slot->hp_slot, slot_cmd); + + return; +} + +int shpc_get_ctlr_slot_config(struct controller *ctrl, + int *num_ctlr_slots, /* number of slots in this HPC */ + int *first_device_num, /* PCI dev num of the first slot in this SHPC */ + int *physical_slot_num, /* phy slot num of the first slot in this SHPC */ + int *updown, /* physical_slot_num increament: 1 or -1 */ + int *flags) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) ctrl->hpc_ctlr_handle; + + DBG_ENTER_ROUTINE + + if (!ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + *first_device_num = php_ctlr->slot_device_offset; /* Obtained in shpc_init() */ + *num_ctlr_slots = php_ctlr->num_slots; /* Obtained in shpc_init() */ + + *physical_slot_num = (readl(php_ctlr->creg + SLOT_CONFIG) & PSN) >> 16; + dbg("%s: physical_slot_num = %x\n", __FUNCTION__, *physical_slot_num); + *updown = ((readl(php_ctlr->creg + SLOT_CONFIG) & UPDOWN ) >> 29) ? 1 : -1; + + DBG_LEAVE_ROUTINE + return 0; +} + +static void hpc_release_ctlr(struct controller *ctrl) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) ctrl->hpc_ctlr_handle; + struct php_ctlr_state_s *p, *p_prev; + + DBG_ENTER_ROUTINE + + if (!ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return ; + } + + if (shpchp_poll_mode) { + del_timer(&php_ctlr->int_poll_timer); + } else { + if (php_ctlr->irq) { + free_irq(php_ctlr->irq, ctrl); + php_ctlr->irq = 0; + pci_disable_msi(php_ctlr->pci_dev); + } + } + if (php_ctlr->pci_dev) { + dbg("%s: before calling iounmap & release_mem_region\n", __FUNCTION__); + iounmap(php_ctlr->creg); + release_mem_region(pci_resource_start(php_ctlr->pci_dev, 0), pci_resource_len(php_ctlr->pci_dev, 0)); + dbg("%s: before calling iounmap & release_mem_region\n", __FUNCTION__); + php_ctlr->pci_dev = NULL; + } + + spin_lock(&list_lock); + p = php_ctlr_list_head; + p_prev = NULL; + while (p) { + if (p == php_ctlr) { + if (p_prev) + p_prev->pnext = p->pnext; + else + php_ctlr_list_head = p->pnext; + break; + } else { + p_prev = p; + p = p->pnext; + } + } + spin_unlock(&list_lock); + + kfree(php_ctlr); + +DBG_LEAVE_ROUTINE + +} + +static int hpc_power_on_slot(struct slot * slot) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u8 slot_cmd; + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return -1; + } + slot_cmd = 0x01; + + retval = shpc_write_cmd(slot, slot->hp_slot, slot_cmd); + + if (retval) { + err("%s: Write command failed!\n", __FUNCTION__); + return -1; + } + + DBG_LEAVE_ROUTINE + + return retval; +} + +static int hpc_slot_enable(struct slot * slot) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u8 slot_cmd; + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return -1; + } + /* 3A => Slot - Enable, Power Indicator - Blink, Attention Indicator - Off */ + slot_cmd = 0x3A; + + retval = shpc_write_cmd(slot, slot->hp_slot, slot_cmd); + + if (retval) { + err("%s: Write command failed!\n", __FUNCTION__); + return -1; + } + + DBG_LEAVE_ROUTINE + return retval; +} + +static int hpc_slot_disable(struct slot * slot) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + u8 slot_cmd; + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return -1; + } + + /* 1F => Slot - Disable, Power Indicator - Off, Attention Indicator - On */ + slot_cmd = 0x1F; + + retval = shpc_write_cmd(slot, slot->hp_slot, slot_cmd); + + if (retval) { + err("%s: Write command failed!\n", __FUNCTION__); + return -1; + } + + DBG_LEAVE_ROUTINE + return retval; +} + +static int hpc_enable_all_slots( struct slot *slot ) +{ + int retval = 0; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + retval = shpc_write_cmd(slot, 0, SET_ENABLE_ALL); + if (retval) { + err("%s: Write command failed!\n", __FUNCTION__); + return -1; + } + + DBG_LEAVE_ROUTINE + + return retval; +} + +static int hpc_pwr_on_all_slots(struct slot *slot) +{ + int retval = 0; + + DBG_ENTER_ROUTINE + + retval = shpc_write_cmd(slot, 0, SET_PWR_ON_ALL); + + if (retval) { + err("%s: Write command failed!\n", __FUNCTION__); + return -1; + } + + DBG_LEAVE_ROUTINE + return retval; +} + +static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value) +{ + u8 slot_cmd; + u8 pi; + int retval = 0; + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + pi = readb(php_ctlr->creg + PROG_INTERFACE); + + if (pi == 1) { + switch (value) { + case 0: + slot_cmd = SETA_PCI_33MHZ; + break; + case 1: + slot_cmd = SETA_PCI_66MHZ; + break; + case 2: + slot_cmd = SETA_PCIX_66MHZ; + break; + case 3: + slot_cmd = SETA_PCIX_100MHZ; + break; + case 4: + slot_cmd = SETA_PCIX_133MHZ; + break; + default: + slot_cmd = PCI_SPEED_UNKNOWN; + retval = -ENODEV; + return retval; + } + } else { + switch (value) { + case 0: + slot_cmd = SETB_PCI_33MHZ; + break; + case 1: + slot_cmd = SETB_PCI_66MHZ; + break; + case 2: + slot_cmd = SETB_PCIX_66MHZ_PM; + break; + case 3: + slot_cmd = SETB_PCIX_100MHZ_PM; + break; + case 4: + slot_cmd = SETB_PCIX_133MHZ_PM; + break; + case 5: + slot_cmd = SETB_PCIX_66MHZ_EM; + break; + case 6: + slot_cmd = SETB_PCIX_100MHZ_EM; + break; + case 7: + slot_cmd = SETB_PCIX_133MHZ_EM; + break; + case 8: + slot_cmd = SETB_PCIX_66MHZ_266; + break; + case 0x9: + slot_cmd = SETB_PCIX_100MHZ_266; + break; + case 0xa: + slot_cmd = SETB_PCIX_133MHZ_266; + break; + case 0xb: + slot_cmd = SETB_PCIX_66MHZ_533; + break; + case 0xc: + slot_cmd = SETB_PCIX_100MHZ_533; + break; + case 0xd: + slot_cmd = SETB_PCIX_133MHZ_533; + break; + default: + slot_cmd = PCI_SPEED_UNKNOWN; + retval = -ENODEV; + return retval; + } + + } + retval = shpc_write_cmd(slot, 0, slot_cmd); + if (retval) { + err("%s: Write command failed!\n", __FUNCTION__); + return -1; + } + + DBG_LEAVE_ROUTINE + return retval; +} + +static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs) +{ + struct controller *ctrl = NULL; + struct php_ctlr_state_s *php_ctlr; + u8 schedule_flag = 0; + u8 temp_byte; + u32 temp_dword, intr_loc, intr_loc2; + int hp_slot; + + if (!dev_id) + return IRQ_NONE; + + if (!shpchp_poll_mode) { + ctrl = (struct controller *)dev_id; + php_ctlr = ctrl->hpc_ctlr_handle; + } else { + php_ctlr = (struct php_ctlr_state_s *) dev_id; + ctrl = (struct controller *)php_ctlr->callback_instance_id; + } + + if (!ctrl) + return IRQ_NONE; + + if (!php_ctlr || !php_ctlr->creg) + return IRQ_NONE; + + /* Check to see if it was our interrupt */ + intr_loc = readl(php_ctlr->creg + INTR_LOC); + + if (!intr_loc) + return IRQ_NONE; + dbg("%s: shpc_isr proceeds\n", __FUNCTION__); + dbg("%s: intr_loc = %x\n",__FUNCTION__, intr_loc); + + if(!shpchp_poll_mode) { + /* Mask Global Interrupt Mask - see implementation note on p. 139 */ + /* of SHPC spec rev 1.0*/ + temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + dbg("%s: Before masking global interrupt, temp_dword = %x\n", + __FUNCTION__, temp_dword); + temp_dword |= 0x00000001; + dbg("%s: After masking global interrupt, temp_dword = %x\n", + __FUNCTION__, temp_dword); + writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE); + + intr_loc2 = readl(php_ctlr->creg + INTR_LOC); + dbg("%s: intr_loc2 = %x\n",__FUNCTION__, intr_loc2); + } + + if (intr_loc & 0x0001) { + /* + * Command Complete Interrupt Pending + * RO only - clear by writing 0 to the Command Completion + * Detect bit in Controller SERR-INT register + */ + temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + dbg("%s: Before clearing CCIP, temp_dword = %x\n", + __FUNCTION__, temp_dword); + temp_dword &= 0xfffeffff; + dbg("%s: After clearing CCIP, temp_dword = %x\n", + __FUNCTION__, temp_dword); + writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE); + wake_up_interruptible(&ctrl->queue); + } + + if ((intr_loc = (intr_loc >> 1)) == 0) { + /* Unmask Global Interrupt Mask */ + temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + dbg("%s: 1-Before unmasking global interrupt, temp_dword = %x\n", + __FUNCTION__, temp_dword); + temp_dword &= 0xfffffffe; + dbg("%s: 1-After unmasking global interrupt, temp_dword = %x\n", + __FUNCTION__, temp_dword); + writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE); + + return IRQ_NONE; + } + + for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) { + /* To find out which slot has interrupt pending */ + if ((intr_loc >> hp_slot) & 0x01) { + temp_dword = readl(php_ctlr->creg + SLOT1 + (4*hp_slot)); + dbg("%s: Slot %x with intr, temp_dword = %x\n", + __FUNCTION__, hp_slot, temp_dword); + temp_byte = (temp_dword >> 16) & 0xFF; + dbg("%s: Slot with intr, temp_byte = %x\n", + __FUNCTION__, temp_byte); + if ((php_ctlr->switch_change_callback) && (temp_byte & 0x08)) + schedule_flag += php_ctlr->switch_change_callback( + hp_slot, php_ctlr->callback_instance_id); + if ((php_ctlr->attention_button_callback) && (temp_byte & 0x04)) + schedule_flag += php_ctlr->attention_button_callback( + hp_slot, php_ctlr->callback_instance_id); + if ((php_ctlr->presence_change_callback) && (temp_byte & 0x01)) + schedule_flag += php_ctlr->presence_change_callback( + hp_slot , php_ctlr->callback_instance_id); + if ((php_ctlr->power_fault_callback) && (temp_byte & 0x12)) + schedule_flag += php_ctlr->power_fault_callback( + hp_slot, php_ctlr->callback_instance_id); + + /* Clear all slot events */ + temp_dword = 0xe01f3fff; + dbg("%s: Clearing slot events, temp_dword = %x\n", + __FUNCTION__, temp_dword); + writel(temp_dword, php_ctlr->creg + SLOT1 + (4*hp_slot)); + + intr_loc2 = readl(php_ctlr->creg + INTR_LOC); + dbg("%s: intr_loc2 = %x\n",__FUNCTION__, intr_loc2); + } + } + if (!shpchp_poll_mode) { + /* Unmask Global Interrupt Mask */ + temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + dbg("%s: 2-Before unmasking global interrupt, temp_dword = %x\n", + __FUNCTION__, temp_dword); + temp_dword &= 0xfffffffe; + dbg("%s: 2-After unmasking global interrupt, temp_dword = %x\n", + __FUNCTION__, temp_dword); + writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE); + } + + return IRQ_HANDLED; +} + +static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN; + int retval = 0; + u8 pi; + u32 slot_avail1, slot_avail2; + int slot_num; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return -1; + } + + pi = readb(php_ctlr->creg + PROG_INTERFACE); + slot_avail1 = readl(php_ctlr->creg + SLOT_AVAIL1); + slot_avail2 = readl(php_ctlr->creg + SLOT_AVAIL2); + + if (pi == 2) { + if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_533) >> 27) ) != 0 ) + bus_speed = PCIX_133MHZ_533; + else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_533) >> 23) ) != 0 ) + bus_speed = PCIX_100MHZ_533; + else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_533) >> 19) ) != 0 ) + bus_speed = PCIX_66MHZ_533; + else if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_266) >> 15) ) != 0 ) + bus_speed = PCIX_133MHZ_266; + else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_266) >> 11) ) != 0 ) + bus_speed = PCIX_100MHZ_266; + else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_266) >> 7) ) != 0 ) + bus_speed = PCIX_66MHZ_266; + else if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 ) + bus_speed = PCIX_133MHZ; + else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 ) + bus_speed = PCIX_100MHZ; + else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 ) + bus_speed = PCIX_66MHZ; + else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 ) + bus_speed = PCI_66MHZ; + else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 ) + bus_speed = PCI_33MHZ; + else bus_speed = PCI_SPEED_UNKNOWN; + } else { + if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 ) + bus_speed = PCIX_133MHZ; + else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 ) + bus_speed = PCIX_100MHZ; + else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 ) + bus_speed = PCIX_66MHZ; + else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 ) + bus_speed = PCI_66MHZ; + else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 ) + bus_speed = PCI_33MHZ; + else bus_speed = PCI_SPEED_UNKNOWN; + } + + *value = bus_speed; + dbg("Max bus speed = %d\n", bus_speed); + DBG_LEAVE_ROUTINE + return retval; +} + +static int hpc_get_cur_bus_speed (struct slot *slot, enum pci_bus_speed *value) +{ + struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle; + enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN; + u16 sec_bus_status; + int retval = 0; + u8 pi; + + DBG_ENTER_ROUTINE + + if (!slot->ctrl->hpc_ctlr_handle) { + err("%s: Invalid HPC controller handle!\n", __FUNCTION__); + return -1; + } + + if (slot->hp_slot >= php_ctlr->num_slots) { + err("%s: Invalid HPC slot number!\n", __FUNCTION__); + return -1; + } + + pi = readb(php_ctlr->creg + PROG_INTERFACE); + sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG); + + if (pi == 2) { + switch (sec_bus_status & 0x000f) { + case 0: + bus_speed = PCI_SPEED_33MHz; + break; + case 1: + bus_speed = PCI_SPEED_66MHz; + break; + case 2: + bus_speed = PCI_SPEED_66MHz_PCIX; + break; + case 3: + bus_speed = PCI_SPEED_100MHz_PCIX; + break; + case 4: + bus_speed = PCI_SPEED_133MHz_PCIX; + break; + case 5: + bus_speed = PCI_SPEED_66MHz_PCIX_ECC; + break; + case 6: + bus_speed = PCI_SPEED_100MHz_PCIX_ECC; + break; + case 7: + bus_speed = PCI_SPEED_133MHz_PCIX_ECC; + break; + case 8: + bus_speed = PCI_SPEED_66MHz_PCIX_266; + break; + case 9: + bus_speed = PCI_SPEED_100MHz_PCIX_266; + break; + case 0xa: + bus_speed = PCI_SPEED_133MHz_PCIX_266; + break; + case 0xb: + bus_speed = PCI_SPEED_66MHz_PCIX_533; + break; + case 0xc: + bus_speed = PCI_SPEED_100MHz_PCIX_533; + break; + case 0xd: + bus_speed = PCI_SPEED_133MHz_PCIX_533; + break; + case 0xe: + case 0xf: + default: + bus_speed = PCI_SPEED_UNKNOWN; + break; + } + } else { + /* In the case where pi is undefined, default it to 1 */ + switch (sec_bus_status & 0x0007) { + case 0: + bus_speed = PCI_SPEED_33MHz; + break; + case 1: + bus_speed = PCI_SPEED_66MHz; + break; + case 2: + bus_speed = PCI_SPEED_66MHz_PCIX; + break; + case 3: + bus_speed = PCI_SPEED_100MHz_PCIX; + break; + case 4: + bus_speed = PCI_SPEED_133MHz_PCIX; + break; + case 5: + bus_speed = PCI_SPEED_UNKNOWN; /* Reserved */ + break; + case 6: + bus_speed = PCI_SPEED_UNKNOWN; /* Reserved */ + break; + case 7: + bus_speed = PCI_SPEED_UNKNOWN; /* Reserved */ + break; + default: + bus_speed = PCI_SPEED_UNKNOWN; + break; + } + } + + *value = bus_speed; + dbg("Current bus speed = %d\n", bus_speed); + DBG_LEAVE_ROUTINE + return retval; +} + +static struct hpc_ops shpchp_hpc_ops = { + .power_on_slot = hpc_power_on_slot, + .slot_enable = hpc_slot_enable, + .slot_disable = hpc_slot_disable, + .enable_all_slots = hpc_enable_all_slots, + .pwr_on_all_slots = hpc_pwr_on_all_slots, + .set_bus_speed_mode = hpc_set_bus_speed_mode, + .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, + + .get_max_bus_speed = hpc_get_max_bus_speed, + .get_cur_bus_speed = hpc_get_cur_bus_speed, + .get_adapter_speed = hpc_get_adapter_speed, + .get_mode1_ECC_cap = hpc_get_mode1_ECC_cap, + .get_prog_int = hpc_get_prog_int, + + .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, + + .release_ctlr = hpc_release_ctlr, + .check_cmd_status = hpc_check_cmd_status, +}; + +int shpc_init(struct controller * ctrl, + struct pci_dev * pdev, + 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) +{ + struct php_ctlr_state_s *php_ctlr, *p; + void *instance_id = ctrl; + int rc; + u8 hp_slot; + static int first = 1; + u32 shpc_cap_offset, shpc_base_offset; + u32 tempdword, slot_reg; + u16 vendor_id, device_id; + u8 i; + + DBG_ENTER_ROUTINE + + spin_lock_init(&list_lock); + php_ctlr = (struct php_ctlr_state_s *) kmalloc(sizeof(struct php_ctlr_state_s), GFP_KERNEL); + + if (!php_ctlr) { /* allocate controller state data */ + err("%s: HPC controller memory allocation error!\n", __FUNCTION__); + goto abort; + } + + memset(php_ctlr, 0, sizeof(struct php_ctlr_state_s)); + + php_ctlr->pci_dev = pdev; /* save pci_dev in context */ + + rc = pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor_id); + dbg("%s: Vendor ID: %x\n",__FUNCTION__, vendor_id); + if (rc) { + err("%s: unable to read PCI configuration data\n", __FUNCTION__); + goto abort_free_ctlr; + } + + rc = pci_read_config_word(pdev, PCI_DEVICE_ID, &device_id); + dbg("%s: Device ID: %x\n",__FUNCTION__, device_id); + if (rc) { + err("%s: unable to read PCI configuration data\n", __FUNCTION__); + goto abort_free_ctlr; + } + + if ((vendor_id == PCI_VENDOR_ID_AMD) || (device_id == PCI_DEVICE_ID_AMD_GOLAM_7450)) { + shpc_base_offset = 0; /* amd shpc driver doesn't use this; assume 0 */ + } else { + if ((shpc_cap_offset = pci_find_capability(pdev, PCI_CAP_ID_SHPC)) == 0) { + err("%s : shpc_cap_offset == 0\n", __FUNCTION__); + goto abort_free_ctlr; + } + dbg("%s: shpc_cap_offset = %x\n", __FUNCTION__, shpc_cap_offset); + + rc = pci_write_config_byte(pdev, (u8)shpc_cap_offset + DWORD_SELECT , BASE_OFFSET); + if (rc) { + err("%s : pci_word_config_byte failed\n", __FUNCTION__); + goto abort_free_ctlr; + } + + rc = pci_read_config_dword(pdev, (u8)shpc_cap_offset + DWORD_DATA, &shpc_base_offset); + if (rc) { + err("%s : pci_read_config_dword failed\n", __FUNCTION__); + goto abort_free_ctlr; + } + + for (i = 0; i <= 14; i++) { + rc = pci_write_config_byte(pdev, (u8)shpc_cap_offset + DWORD_SELECT , i); + if (rc) { + err("%s : pci_word_config_byte failed\n", __FUNCTION__); + goto abort_free_ctlr; + } + + rc = pci_read_config_dword(pdev, (u8)shpc_cap_offset + DWORD_DATA, &tempdword); + if (rc) { + err("%s : pci_read_config_dword failed\n", __FUNCTION__); + goto abort_free_ctlr; + } + dbg("%s: offset %d: tempdword %x\n", __FUNCTION__,i, tempdword); + } + } + + if (first) { + spin_lock_init(&hpc_event_lock); + 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), pdev->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), shpc_base_offset %x\n", rc, + pci_resource_start(pdev, rc), pci_resource_len(pdev, rc), shpc_base_offset); + + 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); + + if (pci_enable_device(pdev)) + goto abort_free_ctlr; + + if (!request_mem_region(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0), MY_NAME)) { + err("%s: cannot reserve MMIO region\n", __FUNCTION__); + goto abort_free_ctlr; + } + + php_ctlr->creg = ioremap(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0)); + if (!php_ctlr->creg) { + err("%s: cannot remap MMIO region %lx @ %lx\n", __FUNCTION__, pci_resource_len(pdev, 0), + pci_resource_start(pdev, 0) + shpc_base_offset); + release_mem_region(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0)); + goto abort_free_ctlr; + } + dbg("%s: php_ctlr->creg %p\n", __FUNCTION__, php_ctlr->creg); + dbg("%s: physical addr %p\n", __FUNCTION__, (void*)pci_resource_start(pdev, 0)); + + init_MUTEX(&ctrl->crit_sect); + /* Setup wait queue */ + init_waitqueue_head(&ctrl->queue); + + /* Find the IRQ */ + php_ctlr->irq = pdev->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->callback_instance_id = instance_id; + + /* Return PCI Controller Info */ + php_ctlr->slot_device_offset = (readl(php_ctlr->creg + SLOT_CONFIG) & FIRST_DEV_NUM ) >> 8; + php_ctlr->num_slots = readl(php_ctlr->creg + SLOT_CONFIG) & SLOT_NUM; + dbg("%s: slot_device_offset %x\n", __FUNCTION__, php_ctlr->slot_device_offset); + dbg("%s: num_slots %x\n", __FUNCTION__, php_ctlr->num_slots); + + /* Mask Global Interrupt Mask & Command Complete Interrupt Mask */ + tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + dbg("%s: SERR_INTR_ENABLE = %x\n", __FUNCTION__, tempdword); + tempdword = 0x0003000f; + writel(tempdword, php_ctlr->creg + SERR_INTR_ENABLE); + tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + dbg("%s: SERR_INTR_ENABLE = %x\n", __FUNCTION__, tempdword); + + /* Mask the MRL sensor SERR Mask of individual slot in + * Slot SERR-INT Mask & clear all the existing event if any + */ + for (hp_slot = 0; hp_slot < php_ctlr->num_slots; hp_slot++) { + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*hp_slot ); + dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__, + hp_slot, slot_reg); + tempdword = 0xffff3fff; + writel(tempdword, php_ctlr->creg + SLOT1 + (4*hp_slot)); + } + + if (shpchp_poll_mode) {/* Install interrupt polling code */ + /* Install and start the interrupt polling timer */ + init_timer(&php_ctlr->int_poll_timer); + start_int_poll_timer( php_ctlr, 10 ); /* start with 10 second delay */ + } else { + /* Installs the interrupt handler */ + rc = pci_enable_msi(pdev); + if (rc) { + info("Can't get msi for the hotplug controller\n"); + info("Use INTx for the hotplug controller\n"); + dbg("%s: rc = %x\n", __FUNCTION__, rc); + } else + php_ctlr->irq = pdev->irq; + + rc = request_irq(php_ctlr->irq, shpc_isr, SA_SHIRQ, MY_NAME, (void *) ctrl); + dbg("%s: request_irq %d for hpc%d (returns %d)\n", __FUNCTION__, php_ctlr->irq, ctlr_seq_num, rc); + if (rc) { + err("Can't get irq %d for the hotplug controller\n", php_ctlr->irq); + goto abort_free_ctlr; + } + /* Execute OSHP method here */ + } + dbg("%s: Before adding HPC to HPC list\n", __FUNCTION__); + + /* Add this HPC instance into the HPC list */ + spin_lock(&list_lock); + if (php_ctlr_list_head == 0) { + php_ctlr_list_head = php_ctlr; + p = php_ctlr_list_head; + p->pnext = NULL; + } else { + p = php_ctlr_list_head; + + while (p->pnext) + p = p->pnext; + + p->pnext = php_ctlr; + } + spin_unlock(&list_lock); + + + ctlr_seq_num++; + ctrl->hpc_ctlr_handle = php_ctlr; + ctrl->hpc_ops = &shpchp_hpc_ops; + + for (hp_slot = 0; hp_slot < php_ctlr->num_slots; hp_slot++) { + slot_reg = readl(php_ctlr->creg + SLOT1 + 4*hp_slot ); + dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__, + hp_slot, slot_reg); + tempdword = 0xe01f3fff; + writel(tempdword, php_ctlr->creg + SLOT1 + (4*hp_slot)); + } + if (!shpchp_poll_mode) { + /* Unmask all general input interrupts and SERR */ + tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + tempdword = 0x0000000a; + writel(tempdword, php_ctlr->creg + SERR_INTR_ENABLE); + tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE); + dbg("%s: SERR_INTR_ENABLE = %x\n", __FUNCTION__, tempdword); + } + + dbg("%s: Leaving shpc_init\n", __FUNCTION__); + DBG_LEAVE_ROUTINE + return 0; + + /* We end up here for the many possible ways to fail this API. */ +abort_free_ctlr: + kfree(php_ctlr); +abort: + DBG_LEAVE_ROUTINE + return -1; +} |