diff options
Diffstat (limited to 'drivers/pci/hotplug/shpchp_hpc.c')
| -rw-r--r-- | drivers/pci/hotplug/shpchp_hpc.c | 98 |
1 files changed, 48 insertions, 50 deletions
diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c index e0f8c1bbaf12..f6b3bf3ee7ca 100644 --- a/drivers/pci/hotplug/shpchp_hpc.c +++ b/drivers/pci/hotplug/shpchp_hpc.c @@ -147,39 +147,37 @@ #define CON_PFAULT_SERR_MASK (1 << 30) #define SLOT_REG_RSVDZ_MASK (1 << 15) | (7 << 21) -/* 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 +/* + * SHPC Command Code definitnions + * + * Slot Operation 00h - 3Fh + * Set Bus Segment Speed/Mode A 40h - 47h + * Power-Only All Slots 48h + * Enable All Slots 49h + * Set Bus Segment Speed/Mode B (PI=2) 50h - 5Fh + * Reserved Command Codes 60h - BFh + * Vendor Specific Commands C0h - FFh + */ +#define SET_SLOT_PWR 0x01 /* Slot Operation */ +#define SET_SLOT_ENABLE 0x02 +#define SET_SLOT_DISABLE 0x03 +#define SET_PWR_ON 0x04 +#define SET_PWR_BLINK 0x08 +#define SET_PWR_OFF 0x0c +#define SET_ATTN_ON 0x10 +#define SET_ATTN_BLINK 0x20 +#define SET_ATTN_OFF 0x30 +#define SETA_PCI_33MHZ 0x40 /* Set Bus Segment Speed/Mode A */ #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 SETA_RESERVED1 0x45 +#define SETA_RESERVED2 0x46 +#define SETA_RESERVED3 0x47 +#define SET_PWR_ONLY_ALL 0x48 /* Power-Only All Slots */ +#define SET_ENABLE_ALL 0x49 /* Enable All Slots */ +#define SETB_PCI_33MHZ 0x50 /* Set Bus Segment Speed/Mode B */ #define SETB_PCI_66MHZ 0x51 #define SETB_PCIX_66MHZ_PM 0x52 #define SETB_PCIX_100MHZ_PM 0x53 @@ -193,23 +191,21 @@ #define SETB_PCIX_66MHZ_533 0x5b #define SETB_PCIX_100MHZ_533 0x5c #define SETB_PCIX_133MHZ_533 0x5d +#define SETB_RESERVED1 0x5e +#define SETB_RESERVED2 0x5f - -/* 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 */ +/* + * SHPC controller command error code + */ #define SWITCH_OPEN 0x1 #define INVALID_CMD 0x2 #define INVALID_SPEED_MODE 0x4 -/* For accessing SHPC Working Register Set */ +/* + * For accessing SHPC Working Register Set via PCI Configuration Space + */ #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 @@ -630,13 +626,13 @@ static int hpc_set_attention_status(struct slot *slot, u8 value) switch (value) { case 0 : - slot_cmd = 0x30; /* OFF */ + slot_cmd = SET_ATTN_OFF; /* OFF */ break; case 1: - slot_cmd = 0x10; /* ON */ + slot_cmd = SET_ATTN_ON; /* ON */ break; case 2: - slot_cmd = 0x20; /* BLINK */ + slot_cmd = SET_ATTN_BLINK; /* BLINK */ break; default: return -1; @@ -648,17 +644,17 @@ static int hpc_set_attention_status(struct slot *slot, u8 value) static void hpc_set_green_led_on(struct slot *slot) { - shpc_write_cmd(slot, slot->hp_slot, 0x04); + shpc_write_cmd(slot, slot->hp_slot, SET_PWR_ON); } static void hpc_set_green_led_off(struct slot *slot) { - shpc_write_cmd(slot, slot->hp_slot, 0x0c); + shpc_write_cmd(slot, slot->hp_slot, SET_PWR_OFF); } static void hpc_set_green_led_blink(struct slot *slot) { - shpc_write_cmd(slot, slot->hp_slot, 0x08); + shpc_write_cmd(slot, slot->hp_slot, SET_PWR_BLINK); } int shpc_get_ctlr_slot_config(struct controller *ctrl, @@ -769,7 +765,7 @@ static int hpc_power_on_slot(struct slot * slot) DBG_ENTER_ROUTINE - retval = shpc_write_cmd(slot, slot->hp_slot, 0x01); + retval = shpc_write_cmd(slot, slot->hp_slot, SET_SLOT_PWR); if (retval) { err("%s: Write command failed!\n", __FUNCTION__); return retval; @@ -786,8 +782,9 @@ static int hpc_slot_enable(struct slot * slot) DBG_ENTER_ROUTINE - /* 3A => Slot - Enable, Power Indicator - Blink, Attention Indicator - Off */ - retval = shpc_write_cmd(slot, slot->hp_slot, 0x3a); + /* 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) { err("%s: Write command failed!\n", __FUNCTION__); return retval; @@ -803,8 +800,9 @@ static int hpc_slot_disable(struct slot * slot) DBG_ENTER_ROUTINE - /* 1F => Slot - Disable, Power Indicator - Off, Attention Indicator - On */ - retval = shpc_write_cmd(slot, slot->hp_slot, 0x1f); + /* 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) { err("%s: Write command failed!\n", __FUNCTION__); return retval; 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