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Commit 2b34da7e authored by Kenji Kaneshige's avatar Kenji Kaneshige Committed by Greg Kroah-Hartman
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[PATCH] SHPC: Cleanup SHPC Logical Slot Register access 

This patch cleans up the code to access slot logical registers. This
patch has no functional changes.
Signed-off-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Cc: Kristen Accardi <kristen.c.accardi@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 75d97c59
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Showing with 18 additions and 13 deletions
drivers/pci/hotplug/shpchp_hpc.c
View file @ 2b34da7e
......@@ -90,6 +90,11 @@
#define MRLSENSOR 0x40000000
#define ATTN_BUTTON 0x80000000
/*
* Logical Slot Register definitions
*/
#define SLOT_REG(i) (SLOT1 + (4 * i))
/* Slot Status Field Definitions */
/* Slot State */
#define PWR_ONLY 0x0001
......@@ -433,7 +438,7 @@ static int hpc_get_attention_status(struct slot *slot, u8 *status)
return -1;
}
slot_reg = shpc_readl(ctrl, SLOT1 + 4*(slot->hp_slot));
slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
slot_status = (u16) slot_reg;
atten_led_state = (slot_status & 0x0030) >> 4;
......@@ -474,7 +479,7 @@ static int hpc_get_power_status(struct slot * slot, u8 *status)
return -1;
}
slot_reg = shpc_readl(ctrl, SLOT1 + 4*(slot->hp_slot));
slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
slot_status = (u16) slot_reg;
slot_state = (slot_status & 0x0003);
......@@ -514,7 +519,7 @@ static int hpc_get_latch_status(struct slot *slot, u8 *status)
return -1;
}
slot_reg = shpc_readl(ctrl, SLOT1 + 4*(slot->hp_slot));
slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
slot_status = (u16)slot_reg;
*status = ((slot_status & 0x0100) == 0) ? 0 : 1; /* 0 -> close; 1 -> open */
......@@ -538,7 +543,7 @@ static int hpc_get_adapter_status(struct slot *slot, u8 *status)
return -1;
}
slot_reg = shpc_readl(ctrl, SLOT1 + 4*(slot->hp_slot));
slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
slot_status = (u16)slot_reg;
card_state = (u8)((slot_status & 0x0C00) >> 10);
*status = (card_state != 0x3) ? 1 : 0;
......@@ -568,7 +573,7 @@ static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value)
{
int retval = 0;
struct controller *ctrl = slot->ctrl;
u32 slot_reg = shpc_readl(ctrl, SLOT1 + 4 * slot->hp_slot);
u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
u8 pcix_cap = (slot_reg >> 12) & 7;
u8 m66_cap = (slot_reg >> 9) & 1;
......@@ -648,7 +653,7 @@ static int hpc_query_power_fault(struct slot * slot)
return -1;
}
slot_reg = shpc_readl(ctrl, SLOT1 + 4*(slot->hp_slot));
slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
slot_status = (u16) slot_reg;
pwr_fault_state = (slot_status & 0x0040) >> 7;
status = (pwr_fault_state == 1) ? 0 : 1;
......@@ -805,7 +810,7 @@ static void hpc_release_ctlr(struct controller *ctrl)
* Mask all slot event interrupts
*/
for (i = 0; i < ctrl->num_slots; i++)
shpc_writel(ctrl, SLOT1 + (4 * i), 0xffff3fff);
shpc_writel(ctrl, SLOT_REG(i), 0xffff3fff);
cleanup_slots(ctrl);
......@@ -1072,7 +1077,7 @@ static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs)
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 = shpc_readl(ctrl, SLOT1 + (4*hp_slot));
temp_dword = shpc_readl(ctrl, SLOT_REG(hp_slot));
dbg("%s: Slot %x with intr, slot register = %x\n",
__FUNCTION__, hp_slot, temp_dword);
temp_byte = (temp_dword >> 16) & 0xFF;
......@@ -1091,7 +1096,7 @@ static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs)
/* Clear all slot events */
temp_dword = 0xe01f3fff;
shpc_writel(ctrl, SLOT1 + (4*hp_slot), temp_dword);
shpc_writel(ctrl, SLOT_REG(hp_slot), temp_dword);
intr_loc2 = shpc_readl(ctrl, INTR_LOC);
dbg("%s: intr_loc2 = %x\n",__FUNCTION__, intr_loc2);
......@@ -1379,11 +1384,11 @@ int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
* 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 = shpc_readl(ctrl, SLOT1 + 4*hp_slot );
slot_reg = shpc_readl(ctrl, SLOT_REG(hp_slot));
dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__,
hp_slot, slot_reg);
tempdword = 0xffff3fff;
shpc_writel(ctrl, SLOT1 + (4*hp_slot), tempdword);
shpc_writel(ctrl, SLOT_REG(hp_slot), tempdword);
}
if (shpchp_poll_mode) {/* Install interrupt polling code */
......@@ -1430,11 +1435,11 @@ int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
ctlr_seq_num++;
for (hp_slot = 0; hp_slot < php_ctlr->num_slots; hp_slot++) {
slot_reg = shpc_readl(ctrl, SLOT1 + 4*hp_slot );
slot_reg = shpc_readl(ctrl, SLOT_REG(hp_slot));
dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__,
hp_slot, slot_reg);
tempdword = 0xe01f3fff;
shpc_writel(ctrl, SLOT1 + (4*hp_slot), tempdword);
shpc_writel(ctrl, SLOT_REG(hp_slot), tempdword);
}
if (!shpchp_poll_mode) {
/* Unmask all general input interrupts and SERR */
......
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