diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/hotplug/shpchp_hpc.c | 155 |
1 files changed, 19 insertions, 136 deletions
diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c index b7bede4..7e9347e 100644 --- a/drivers/pci/hotplug/shpchp_hpc.c +++ b/drivers/pci/hotplug/shpchp_hpc.c @@ -35,38 +35,6 @@ #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 @@ -211,7 +179,6 @@ #define SLOT_EVENT_LATCH 0x2 #define SLOT_SERR_INT_MASK 0x3 -DEFINE_DBG_BUFFER /* Debug string buffer for entire HPC defined here */ static atomic_t shpchp_num_controllers = ATOMIC_INIT(0); static irqreturn_t shpc_isr(int irq, void *dev_id); @@ -268,8 +235,6 @@ static void int_poll_timeout(unsigned long data) { struct controller *ctrl = (struct controller *)data; - DBG_ENTER_ROUTINE - /* Poll for interrupt events. regs == NULL => polling */ shpc_isr(0, ctrl); @@ -278,8 +243,6 @@ static void int_poll_timeout(unsigned long data) shpchp_poll_time = 2; /* default polling interval is 2 sec */ start_int_poll_timer(ctrl, shpchp_poll_time); - - DBG_LEAVE_ROUTINE } /* @@ -353,8 +316,6 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd) int retval = 0; u16 temp_word; - DBG_ENTER_ROUTINE - mutex_lock(&slot->ctrl->cmd_lock); if (!shpc_poll_ctrl_busy(ctrl)) { @@ -389,19 +350,13 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd) } out: mutex_unlock(&slot->ctrl->cmd_lock); - - DBG_LEAVE_ROUTINE return retval; } static int hpc_check_cmd_status(struct controller *ctrl) { - u16 cmd_status; int retval = 0; - - DBG_ENTER_ROUTINE - - cmd_status = shpc_readw(ctrl, CMD_STATUS) & 0x000F; + u16 cmd_status = shpc_readw(ctrl, CMD_STATUS) & 0x000F; switch (cmd_status >> 1) { case 0: @@ -423,7 +378,6 @@ static int hpc_check_cmd_status(struct controller *ctrl) retval = cmd_status; } - DBG_LEAVE_ROUTINE return retval; } @@ -431,13 +385,8 @@ static int hpc_check_cmd_status(struct controller *ctrl) static int hpc_get_attention_status(struct slot *slot, u8 *status) { struct controller *ctrl = slot->ctrl; - u32 slot_reg; - u8 state; - - DBG_ENTER_ROUTINE - - slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); - state = (slot_reg & ATN_LED_STATE_MASK) >> ATN_LED_STATE_SHIFT; + u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); + u8 state = (slot_reg & ATN_LED_STATE_MASK) >> ATN_LED_STATE_SHIFT; switch (state) { case ATN_LED_STATE_ON: @@ -454,20 +403,14 @@ static int hpc_get_attention_status(struct slot *slot, u8 *status) break; } - DBG_LEAVE_ROUTINE return 0; } static int hpc_get_power_status(struct slot * slot, u8 *status) { struct controller *ctrl = slot->ctrl; - u32 slot_reg; - u8 state; - - DBG_ENTER_ROUTINE - - slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); - state = (slot_reg & SLOT_STATE_MASK) >> SLOT_STATE_SHIFT; + u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); + u8 state = (slot_reg & SLOT_STATE_MASK) >> SLOT_STATE_SHIFT; switch (state) { case SLOT_STATE_PWRONLY: @@ -484,7 +427,6 @@ static int hpc_get_power_status(struct slot * slot, u8 *status) break; } - DBG_LEAVE_ROUTINE return 0; } @@ -492,30 +434,21 @@ static int hpc_get_power_status(struct slot * slot, u8 *status) static int hpc_get_latch_status(struct slot *slot, u8 *status) { struct controller *ctrl = slot->ctrl; - u32 slot_reg; - - DBG_ENTER_ROUTINE + u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); - slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); *status = !!(slot_reg & MRL_SENSOR); /* 0 -> close; 1 -> open */ - DBG_LEAVE_ROUTINE return 0; } static int hpc_get_adapter_status(struct slot *slot, u8 *status) { struct controller *ctrl = slot->ctrl; - u32 slot_reg; - u8 state; - - DBG_ENTER_ROUTINE + u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); + u8 state = (slot_reg & PRSNT_MASK) >> PRSNT_SHIFT; - slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); - state = (slot_reg & PRSNT_MASK) >> PRSNT_SHIFT; *status = (state != 0x3) ? 1 : 0; - DBG_LEAVE_ROUTINE return 0; } @@ -523,11 +456,8 @@ static int hpc_get_prog_int(struct slot *slot, u8 *prog_int) { struct controller *ctrl = slot->ctrl; - DBG_ENTER_ROUTINE - *prog_int = shpc_readb(ctrl, PROG_INTERFACE); - DBG_LEAVE_ROUTINE return 0; } @@ -539,8 +469,6 @@ static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value) u8 m66_cap = !!(slot_reg & MHZ66_CAP); u8 pi, pcix_cap; - DBG_ENTER_ROUTINE - if ((retval = hpc_get_prog_int(slot, &pi))) return retval; @@ -582,21 +510,15 @@ static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value) } dbg("Adapter speed = %d\n", *value); - DBG_LEAVE_ROUTINE return retval; } static int hpc_get_mode1_ECC_cap(struct slot *slot, u8 *mode) { - struct controller *ctrl = slot->ctrl; - u16 sec_bus_status; - u8 pi; int retval = 0; - - DBG_ENTER_ROUTINE - - pi = shpc_readb(ctrl, PROG_INTERFACE); - sec_bus_status = shpc_readw(ctrl, SEC_BUS_CONFIG); + struct controller *ctrl = slot->ctrl; + u16 sec_bus_status = shpc_readw(ctrl, SEC_BUS_CONFIG); + u8 pi = shpc_readb(ctrl, PROG_INTERFACE); if (pi == 2) { *mode = (sec_bus_status & 0x0100) >> 8; @@ -605,21 +527,14 @@ static int hpc_get_mode1_ECC_cap(struct slot *slot, u8 *mode) } dbg("Mode 1 ECC cap = %d\n", *mode); - - DBG_LEAVE_ROUTINE return retval; } static int hpc_query_power_fault(struct slot * slot) { struct controller *ctrl = slot->ctrl; - u32 slot_reg; - - DBG_ENTER_ROUTINE - - slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); + u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); - DBG_LEAVE_ROUTINE /* Note: Logic 0 => fault */ return !(slot_reg & POWER_FAULT); } @@ -666,8 +581,6 @@ static void hpc_release_ctlr(struct controller *ctrl) int i; u32 slot_reg, serr_int; - DBG_ENTER_ROUTINE - /* * Mask event interrupts and SERRs of all slots */ @@ -708,61 +621,43 @@ static void hpc_release_ctlr(struct controller *ctrl) */ if (atomic_dec_and_test(&shpchp_num_controllers)) destroy_workqueue(shpchp_wq); - - DBG_LEAVE_ROUTINE } static int hpc_power_on_slot(struct slot * slot) { int retval; - DBG_ENTER_ROUTINE - retval = shpc_write_cmd(slot, slot->hp_slot, SET_SLOT_PWR); - if (retval) { + if (retval) err("%s: Write command failed!\n", __FUNCTION__); - return retval; - } - - DBG_LEAVE_ROUTINE - return 0; + return retval; } static int hpc_slot_enable(struct slot * slot) { int retval; - DBG_ENTER_ROUTINE - /* Slot - Enable, Power Indicator - Blink, Attention Indicator - Off */ retval = shpc_write_cmd(slot, slot->hp_slot, SET_SLOT_ENABLE | SET_PWR_BLINK | SET_ATTN_OFF); - if (retval) { + if (retval) err("%s: Write command failed!\n", __FUNCTION__); - return retval; - } - DBG_LEAVE_ROUTINE - return 0; + return retval; } static int hpc_slot_disable(struct slot * slot) { int retval; - DBG_ENTER_ROUTINE - /* Slot - Disable, Power Indicator - Off, Attention Indicator - On */ retval = shpc_write_cmd(slot, slot->hp_slot, SET_SLOT_DISABLE | SET_PWR_OFF | SET_ATTN_ON); - if (retval) { + if (retval) err("%s: Write command failed!\n", __FUNCTION__); - return retval; - } - DBG_LEAVE_ROUTINE - return 0; + return retval; } static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value) @@ -771,8 +666,6 @@ static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value) struct controller *ctrl = slot->ctrl; u8 pi, cmd; - DBG_ENTER_ROUTINE - pi = shpc_readb(ctrl, PROG_INTERFACE); if ((pi == 1) && (value > PCI_SPEED_133MHz_PCIX)) return -EINVAL; @@ -828,7 +721,6 @@ static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value) if (retval) err("%s: Write command failed!\n", __FUNCTION__); - DBG_LEAVE_ROUTINE return retval; } @@ -920,8 +812,6 @@ static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value) u32 slot_avail1 = shpc_readl(ctrl, SLOT_AVAIL1); u32 slot_avail2 = shpc_readl(ctrl, SLOT_AVAIL2); - DBG_ENTER_ROUTINE - if (pi == 2) { if (slot_avail2 & SLOT_133MHZ_PCIX_533) bus_speed = PCI_SPEED_133MHz_PCIX_533; @@ -954,7 +844,7 @@ static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value) *value = bus_speed; dbg("Max bus speed = %d\n", bus_speed); - DBG_LEAVE_ROUTINE + return retval; } @@ -967,8 +857,6 @@ static int hpc_get_cur_bus_speed (struct slot *slot, enum pci_bus_speed *value) u8 pi = shpc_readb(ctrl, PROG_INTERFACE); u8 speed_mode = (pi == 2) ? (sec_bus_reg & 0xF) : (sec_bus_reg & 0x7); - DBG_ENTER_ROUTINE - if ((pi == 1) && (speed_mode > 4)) { *value = PCI_SPEED_UNKNOWN; return -ENODEV; @@ -1024,7 +912,6 @@ static int hpc_get_cur_bus_speed (struct slot *slot, enum pci_bus_speed *value) } dbg("Current bus speed = %d\n", bus_speed); - DBG_LEAVE_ROUTINE return retval; } @@ -1061,8 +948,6 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev) u32 tempdword, slot_reg, slot_config; u8 i; - DBG_ENTER_ROUTINE - ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */ if ((pdev->vendor == PCI_VENDOR_ID_AMD) || (pdev->device == @@ -1235,13 +1120,11 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev) dbg("%s: SERR_INTR_ENABLE = %x\n", __FUNCTION__, tempdword); } - DBG_LEAVE_ROUTINE return 0; /* We end up here for the many possible ways to fail this API. */ abort_iounmap: iounmap(ctrl->creg); abort: - DBG_LEAVE_ROUTINE return rc; } |
