static atomic_t pciehp_num_controllers = ATOMIC_INIT(0);
-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),
-};
-
static inline int pciehp_readw(struct controller *ctrl, int reg, u16 *value)
{
struct pci_dev *dev = ctrl->pci_dev;
return pci_write_config_dword(dev, ctrl->cap_base + reg, value);
}
-/* 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
-#define LNK_X4 0x04
-#define LNK_X8 0x08
-#define LNK_X12 0x0C
-#define LNK_X16 0x10
-#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
-#define EMI_CTRL 0x0800
-
-/* 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
-
-/* EMI Status defines */
-#define EMI_DISENGAGED 0
-#define EMI_ENGAGED 1
-
-/* 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
-#define EMI_STATE 0x0080
-#define EMI_STATUS_BIT 7
+#define POWER_OFF PCI_EXP_SLTCTL_PCC
static irqreturn_t pcie_isr(int irq, void *dev_id);
static void start_int_poll_timer(struct controller *ctrl, int sec);
static int pcie_poll_cmd(struct controller *ctrl)
{
u16 slot_status;
- int timeout = 1000;
+ int err, timeout = 1000;
- if (!pciehp_readw(ctrl, SLOTSTATUS, &slot_status)) {
- if (slot_status & CMD_COMPLETED) {
- pciehp_writew(ctrl, SLOTSTATUS, CMD_COMPLETED);
- return 1;
- }
+ err = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
+ if (!err && (slot_status & PCI_EXP_SLTSTA_CC)) {
+ pciehp_writew(ctrl, PCI_EXP_SLTSTA, PCI_EXP_SLTSTA_CC);
+ return 1;
}
while (timeout > 0) {
msleep(10);
timeout -= 10;
- if (!pciehp_readw(ctrl, SLOTSTATUS, &slot_status)) {
- if (slot_status & CMD_COMPLETED) {
- pciehp_writew(ctrl, SLOTSTATUS, CMD_COMPLETED);
- return 1;
- }
+ err = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
+ if (!err && (slot_status & PCI_EXP_SLTSTA_CC)) {
+ pciehp_writew(ctrl, PCI_EXP_SLTSTA, PCI_EXP_SLTSTA_CC);
+ return 1;
}
}
return 0; /* timeout */
mutex_lock(&ctrl->ctrl_lock);
- retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read SLOTSTATUS register\n",
__func__);
goto out;
}
- if (slot_status & CMD_COMPLETED) {
+ if (slot_status & PCI_EXP_SLTSTA_CC) {
if (!ctrl->no_cmd_complete) {
/*
* 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.
*/
- ctrl_dbg(ctrl,
- "%s: CMD_COMPLETED not clear after 1 sec.\n",
- __func__);
+ ctrl_dbg(ctrl, "CMD_COMPLETED not clear after 1 sec\n");
} else if (!NO_CMD_CMPL(ctrl)) {
/*
* This controller semms to notify of command completed
* event even though it supports none of power
* controller, attention led, power led and EMI.
*/
- ctrl_dbg(ctrl, "%s: Unexpected CMD_COMPLETED. Need to "
- "wait for command completed event.\n",
- __func__);
+ ctrl_dbg(ctrl, "Unexpected CMD_COMPLETED. Need to "
+ "wait for command completed event.\n");
ctrl->no_cmd_complete = 0;
} else {
- ctrl_dbg(ctrl, "%s: Unexpected CMD_COMPLETED. Maybe "
- "the controller is broken.\n", __func__);
+ ctrl_dbg(ctrl, "Unexpected CMD_COMPLETED. Maybe "
+ "the controller is broken.\n");
}
}
- retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTCTL, &slot_ctrl);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read SLOTCTRL register\n", __func__);
goto out;
slot_ctrl |= (cmd & mask);
ctrl->cmd_busy = 1;
smp_mb();
- retval = pciehp_writew(ctrl, SLOTCTRL, slot_ctrl);
+ retval = pciehp_writew(ctrl, PCI_EXP_SLTCTL, slot_ctrl);
if (retval)
- ctrl_err(ctrl, "%s: Cannot write to SLOTCTRL register\n",
- __func__);
+ ctrl_err(ctrl, "Cannot write to SLOTCTRL register\n");
/*
* Wait for command completion.
* completed interrupt is not enabled, we need to poll
* command completed event.
*/
- if (!(slot_ctrl & HP_INTR_ENABLE) ||
- !(slot_ctrl & CMD_CMPL_INTR_ENABLE))
+ if (!(slot_ctrl & PCI_EXP_SLTCTL_HPIE) ||
+ !(slot_ctrl & PCI_EXP_SLTCTL_CCIE))
poll = 1;
pcie_wait_cmd(ctrl, poll);
}
return retval;
}
+static inline int check_link_active(struct controller *ctrl)
+{
+ u16 link_status;
+
+ if (pciehp_readw(ctrl, PCI_EXP_LNKSTA, &link_status))
+ return 0;
+ return !!(link_status & PCI_EXP_LNKSTA_DLLLA);
+}
+
+static void pcie_wait_link_active(struct controller *ctrl)
+{
+ int timeout = 1000;
+
+ if (check_link_active(ctrl))
+ return;
+ while (timeout > 0) {
+ msleep(10);
+ timeout -= 10;
+ if (check_link_active(ctrl))
+ return;
+ }
+ ctrl_dbg(ctrl, "Data Link Layer Link Active not set in 1000 msec\n");
+}
+
static int hpc_check_lnk_status(struct controller *ctrl)
{
u16 lnk_status;
int retval = 0;
- retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
+ /*
+ * Data Link Layer Link Active Reporting must be capable for
+ * hot-plug capable downstream port. But old controller might
+ * not implement it. In this case, we wait for 1000 ms.
+ */
+ if (ctrl->link_active_reporting){
+ /* Wait for Data Link Layer Link Active bit to be set */
+ pcie_wait_link_active(ctrl);
+ /*
+ * We must wait for 100 ms after the Data Link Layer
+ * Link Active bit reads 1b before initiating a
+ * configuration access to the hot added device.
+ */
+ msleep(100);
+ } else
+ msleep(1000);
+
+ retval = pciehp_readw(ctrl, PCI_EXP_LNKSTA, &lnk_status);
if (retval) {
- ctrl_err(ctrl, "%s: Cannot read LNKSTATUS register\n",
- __func__);
+ ctrl_err(ctrl, "Cannot read LNKSTATUS register\n");
return retval;
}
ctrl_dbg(ctrl, "%s: lnk_status = %x\n", __func__, lnk_status);
- if ( (lnk_status & LNK_TRN) || (lnk_status & LNK_TRN_ERR) ||
- !(lnk_status & NEG_LINK_WD)) {
- ctrl_err(ctrl, "%s : Link Training Error occurs \n", __func__);
+ if ((lnk_status & PCI_EXP_LNKSTA_LT) ||
+ !(lnk_status & PCI_EXP_LNKSTA_NLW)) {
+ ctrl_err(ctrl, "Link Training Error occurs \n");
retval = -1;
return retval;
}
u8 atten_led_state;
int retval = 0;
- retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTCTL, &slot_ctrl);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read SLOTCTRL register\n", __func__);
return retval;
}
ctrl_dbg(ctrl, "%s: SLOTCTRL %x, value read %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_ctrl);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_ctrl);
- atten_led_state = (slot_ctrl & ATTN_LED_CTRL) >> 6;
+ atten_led_state = (slot_ctrl & PCI_EXP_SLTCTL_AIC) >> 6;
switch (atten_led_state) {
case 0:
u8 pwr_state;
int retval = 0;
- retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTCTL, &slot_ctrl);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read SLOTCTRL register\n", __func__);
return retval;
}
ctrl_dbg(ctrl, "%s: SLOTCTRL %x value read %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_ctrl);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_ctrl);
- pwr_state = (slot_ctrl & PWR_CTRL) >> 10;
+ pwr_state = (slot_ctrl & PCI_EXP_SLTCTL_PCC) >> 10;
switch (pwr_state) {
case 0:
{
struct controller *ctrl = slot->ctrl;
u16 slot_status;
- int retval = 0;
+ int retval;
- retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read SLOTSTATUS register\n",
__func__);
return retval;
}
-
- *status = (((slot_status & MRL_STATE) >> 5) == 0) ? 0 : 1;
-
+ *status = !!(slot_status & PCI_EXP_SLTSTA_MRLSS);
return 0;
}
{
struct controller *ctrl = slot->ctrl;
u16 slot_status;
- u8 card_state;
- int retval = 0;
+ int retval;
- retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read SLOTSTATUS register\n",
__func__);
return retval;
}
- card_state = (u8)((slot_status & PRSN_STATE) >> 6);
- *status = (card_state == 1) ? 1 : 0;
-
+ *status = !!(slot_status & PCI_EXP_SLTSTA_PDS);
return 0;
}
{
struct controller *ctrl = slot->ctrl;
u16 slot_status;
- u8 pwr_fault;
- int retval = 0;
+ int retval;
- retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
if (retval) {
- ctrl_err(ctrl, "%s: Cannot check for power fault\n", __func__);
+ ctrl_err(ctrl, "Cannot check for power fault\n");
return retval;
}
- pwr_fault = (u8)((slot_status & PWR_FAULT_DETECTED) >> 1);
-
- return pwr_fault;
+ return !!(slot_status & PCI_EXP_SLTSTA_PFD);
}
static int hpc_get_emi_status(struct slot *slot, u8 *status)
{
struct controller *ctrl = slot->ctrl;
u16 slot_status;
- int retval = 0;
+ int retval;
- retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
if (retval) {
- ctrl_err(ctrl, "%s : Cannot check EMI status\n", __func__);
+ ctrl_err(ctrl, "Cannot check EMI status\n");
return retval;
}
- *status = (slot_status & EMI_STATE) >> EMI_STATUS_BIT;
-
+ *status = !!(slot_status & PCI_EXP_SLTSTA_EIS);
return retval;
}
u16 cmd_mask;
int rc;
- slot_cmd = EMI_CTRL;
- cmd_mask = EMI_CTRL;
+ slot_cmd = PCI_EXP_SLTCTL_EIC;
+ cmd_mask = PCI_EXP_SLTCTL_EIC;
rc = pcie_write_cmd(slot->ctrl, slot_cmd, cmd_mask);
slot->last_emi_toggle = get_seconds();
u16 cmd_mask;
int rc;
- cmd_mask = ATTN_LED_CTRL;
+ cmd_mask = PCI_EXP_SLTCTL_AIC;
switch (value) {
case 0 : /* turn off */
slot_cmd = 0x00C0;
}
rc = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
return rc;
}
u16 cmd_mask;
slot_cmd = 0x0100;
- cmd_mask = PWR_LED_CTRL;
+ cmd_mask = PCI_EXP_SLTCTL_PIC;
pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
}
static void hpc_set_green_led_off(struct slot *slot)
u16 cmd_mask;
slot_cmd = 0x0300;
- cmd_mask = PWR_LED_CTRL;
+ cmd_mask = PCI_EXP_SLTCTL_PIC;
pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
}
static void hpc_set_green_led_blink(struct slot *slot)
u16 cmd_mask;
slot_cmd = 0x0200;
- cmd_mask = PWR_LED_CTRL;
+ cmd_mask = PCI_EXP_SLTCTL_PIC;
pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
}
static int hpc_power_on_slot(struct slot * slot)
ctrl_dbg(ctrl, "%s: slot->hp_slot %x\n", __func__, slot->hp_slot);
/* Clear sticky power-fault bit from previous power failures */
- retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_SLTSTA, &slot_status);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read SLOTSTATUS register\n",
__func__);
return retval;
}
- slot_status &= PWR_FAULT_DETECTED;
+ slot_status &= PCI_EXP_SLTSTA_PFD;
if (slot_status) {
- retval = pciehp_writew(ctrl, SLOTSTATUS, slot_status);
+ retval = pciehp_writew(ctrl, PCI_EXP_SLTSTA, slot_status);
if (retval) {
ctrl_err(ctrl,
"%s: Cannot write to SLOTSTATUS register\n",
}
slot_cmd = POWER_ON;
- cmd_mask = PWR_CTRL;
- /* Enable detection that we turned off at slot power-off time */
+ cmd_mask = PCI_EXP_SLTCTL_PCC;
if (!pciehp_poll_mode) {
- slot_cmd |= (PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
- PRSN_DETECT_ENABLE);
- cmd_mask |= (PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
- PRSN_DETECT_ENABLE);
+ /* Enable power fault detection turned off at power off time */
+ slot_cmd |= PCI_EXP_SLTCTL_PFDE;
+ cmd_mask |= PCI_EXP_SLTCTL_PFDE;
}
retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
-
if (retval) {
- ctrl_err(ctrl, "%s: Write %x command failed!\n",
- __func__, slot_cmd);
- return -1;
+ ctrl_err(ctrl, "Write %x command failed!\n", slot_cmd);
+ return retval;
}
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
+ ctrl->power_fault_detected = 0;
return retval;
}
changed = pcie_mask_bad_dllp(ctrl);
slot_cmd = POWER_OFF;
- cmd_mask = PWR_CTRL;
- /*
- * 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.
- */
+ cmd_mask = PCI_EXP_SLTCTL_PCC;
if (!pciehp_poll_mode) {
- slot_cmd &= ~(PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
- PRSN_DETECT_ENABLE);
- cmd_mask |= (PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
- PRSN_DETECT_ENABLE);
+ /* Disable power fault detection */
+ slot_cmd &= ~PCI_EXP_SLTCTL_PFDE;
+ cmd_mask |= PCI_EXP_SLTCTL_PFDE;
}
retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
if (retval) {
- ctrl_err(ctrl, "%s: Write command failed!\n", __func__);
+ ctrl_err(ctrl, "Write command failed!\n");
retval = -1;
goto out;
}
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
- __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
+ __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
out:
if (changed)
pcie_unmask_bad_dllp(ctrl);
*/
intr_loc = 0;
do {
- if (pciehp_readw(ctrl, SLOTSTATUS, &detected)) {
+ if (pciehp_readw(ctrl, PCI_EXP_SLTSTA, &detected)) {
ctrl_err(ctrl, "%s: Cannot read SLOTSTATUS\n",
__func__);
return IRQ_NONE;
}
- detected &= (ATTN_BUTTN_PRESSED | PWR_FAULT_DETECTED |
- MRL_SENS_CHANGED | PRSN_DETECT_CHANGED |
- CMD_COMPLETED);
+ detected &= (PCI_EXP_SLTSTA_ABP | PCI_EXP_SLTSTA_PFD |
+ PCI_EXP_SLTSTA_MRLSC | PCI_EXP_SLTSTA_PDC |
+ PCI_EXP_SLTSTA_CC);
+ detected &= ~intr_loc;
intr_loc |= detected;
if (!intr_loc)
return IRQ_NONE;
- if (detected && pciehp_writew(ctrl, SLOTSTATUS, detected)) {
+ if (detected && pciehp_writew(ctrl, PCI_EXP_SLTSTA, intr_loc)) {
ctrl_err(ctrl, "%s: Cannot write to SLOTSTATUS\n",
__func__);
return IRQ_NONE;
ctrl_dbg(ctrl, "%s: intr_loc %x\n", __func__, intr_loc);
/* Check Command Complete Interrupt Pending */
- if (intr_loc & CMD_COMPLETED) {
+ if (intr_loc & PCI_EXP_SLTSTA_CC) {
ctrl->cmd_busy = 0;
smp_mb();
wake_up(&ctrl->queue);
}
- if (!(intr_loc & ~CMD_COMPLETED))
+ if (!(intr_loc & ~PCI_EXP_SLTSTA_CC))
return IRQ_HANDLED;
p_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
/* Check MRL Sensor Changed */
- if (intr_loc & MRL_SENS_CHANGED)
+ if (intr_loc & PCI_EXP_SLTSTA_MRLSC)
pciehp_handle_switch_change(p_slot);
/* Check Attention Button Pressed */
- if (intr_loc & ATTN_BUTTN_PRESSED)
+ if (intr_loc & PCI_EXP_SLTSTA_ABP)
pciehp_handle_attention_button(p_slot);
/* Check Presence Detect Changed */
- if (intr_loc & PRSN_DETECT_CHANGED)
+ if (intr_loc & PCI_EXP_SLTSTA_PDC)
pciehp_handle_presence_change(p_slot);
/* Check Power Fault Detected */
- if (intr_loc & PWR_FAULT_DETECTED)
+ if ((intr_loc & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) {
+ ctrl->power_fault_detected = 1;
pciehp_handle_power_fault(p_slot);
-
+ }
return IRQ_HANDLED;
}
u32 lnk_cap;
int retval = 0;
- retval = pciehp_readl(ctrl, LNKCAP, &lnk_cap);
+ retval = pciehp_readl(ctrl, PCI_EXP_LNKCAP, &lnk_cap);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read LNKCAP register\n", __func__);
return retval;
u32 lnk_cap;
int retval = 0;
- retval = pciehp_readl(ctrl, LNKCAP, &lnk_cap);
+ retval = pciehp_readl(ctrl, PCI_EXP_LNKCAP, &lnk_cap);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read LNKCAP register\n", __func__);
return retval;
}
- switch ((lnk_cap & 0x03F0) >> 4){
+ switch ((lnk_cap & PCI_EXP_LNKSTA_NLW) >> 4){
case 0:
lnk_wdth = PCIE_LNK_WIDTH_RESRV;
break;
int retval = 0;
u16 lnk_status;
- retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_LNKSTA, &lnk_status);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read LNKSTATUS register\n",
__func__);
return retval;
}
- switch (lnk_status & 0x0F) {
+ switch (lnk_status & PCI_EXP_LNKSTA_CLS) {
case 1:
lnk_speed = PCIE_2PT5GB;
break;
int retval = 0;
u16 lnk_status;
- retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
+ retval = pciehp_readw(ctrl, PCI_EXP_LNKSTA, &lnk_status);
if (retval) {
ctrl_err(ctrl, "%s: Cannot read LNKSTATUS register\n",
__func__);
return retval;
}
- switch ((lnk_status & 0x03F0) >> 4){
+ switch ((lnk_status & PCI_EXP_LNKSTA_NLW) >> 4){
case 0:
lnk_wdth = PCIE_LNK_WIDTH_RESRV;
break;
{
u16 cmd, mask;
- cmd = PRSN_DETECT_ENABLE;
+ cmd = PCI_EXP_SLTCTL_PDCE;
if (ATTN_BUTTN(ctrl))
- cmd |= ATTN_BUTTN_ENABLE;
+ cmd |= PCI_EXP_SLTCTL_ABPE;
if (POWER_CTRL(ctrl))
- cmd |= PWR_FAULT_DETECT_ENABLE;
+ cmd |= PCI_EXP_SLTCTL_PFDE;
if (MRL_SENS(ctrl))
- cmd |= MRL_DETECT_ENABLE;
+ cmd |= PCI_EXP_SLTCTL_MRLSCE;
if (!pciehp_poll_mode)
- cmd |= HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
+ cmd |= PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE;
- mask = PRSN_DETECT_ENABLE | ATTN_BUTTN_ENABLE | MRL_DETECT_ENABLE |
- PWR_FAULT_DETECT_ENABLE | HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
+ mask = (PCI_EXP_SLTCTL_PDCE | PCI_EXP_SLTCTL_ABPE |
+ PCI_EXP_SLTCTL_MRLSCE | PCI_EXP_SLTCTL_PFDE |
+ PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE);
if (pcie_write_cmd(ctrl, cmd, mask)) {
- ctrl_err(ctrl, "%s: Cannot enable software notification\n",
- __func__);
+ ctrl_err(ctrl, "Cannot enable software notification\n");
return -1;
}
return 0;
static void pcie_disable_notification(struct controller *ctrl)
{
u16 mask;
- mask = PRSN_DETECT_ENABLE | ATTN_BUTTN_ENABLE | MRL_DETECT_ENABLE |
- PWR_FAULT_DETECT_ENABLE | HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
+ mask = (PCI_EXP_SLTCTL_PDCE | PCI_EXP_SLTCTL_ABPE |
+ PCI_EXP_SLTCTL_MRLSCE | PCI_EXP_SLTCTL_PFDE |
+ PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE);
if (pcie_write_cmd(ctrl, 0, mask))
- ctrl_warn(ctrl, "%s: Cannot disable software notification\n",
- __func__);
+ ctrl_warn(ctrl, "Cannot disable software notification\n");
}
-static int pcie_init_notification(struct controller *ctrl)
+int pcie_init_notification(struct controller *ctrl)
{
if (pciehp_request_irq(ctrl))
return -1;
pciehp_free_irq(ctrl);
return -1;
}
+ ctrl->notification_enabled = 1;
return 0;
}
static void pcie_shutdown_notification(struct controller *ctrl)
{
- pcie_disable_notification(ctrl);
- pciehp_free_irq(ctrl);
+ if (ctrl->notification_enabled) {
+ pcie_disable_notification(ctrl);
+ pciehp_free_irq(ctrl);
+ ctrl->notification_enabled = 0;
+ }
}
static int pcie_init_slot(struct controller *ctrl)
slot->device = ctrl->slot_device_offset + slot->hp_slot;
slot->hpc_ops = ctrl->hpc_ops;
slot->number = ctrl->first_slot;
- snprintf(slot->name, SLOT_NAME_SIZE, "%d", slot->number);
mutex_init(&slot->lock);
INIT_DELAYED_WORK(&slot->work, pciehp_queue_pushbutton_work);
list_add(&slot->slot_list, &ctrl->slot_list);
EMI(ctrl) ? "yes" : "no");
ctrl_info(ctrl, " Command Completed : %3s\n",
NO_CMD_CMPL(ctrl) ? "no" : "yes");
- pciehp_readw(ctrl, SLOTSTATUS, ®16);
+ pciehp_readw(ctrl, PCI_EXP_SLTSTA, ®16);
ctrl_info(ctrl, "Slot Status : 0x%04x\n", reg16);
- pciehp_readw(ctrl, SLOTCTRL, ®16);
+ pciehp_readw(ctrl, PCI_EXP_SLTCTL, ®16);
ctrl_info(ctrl, "Slot Control : 0x%04x\n", reg16);
}
struct controller *pcie_init(struct pcie_device *dev)
{
struct controller *ctrl;
- u32 slot_cap;
+ u32 slot_cap, link_cap;
struct pci_dev *pdev = dev->port;
ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
if (!ctrl) {
- dev_err(&dev->device, "%s : out of memory\n", __func__);
+ dev_err(&dev->device, "%s: Out of memory\n", __func__);
goto abort;
}
INIT_LIST_HEAD(&ctrl->slot_list);
ctrl->pci_dev = pdev;
ctrl->cap_base = pci_find_capability(pdev, PCI_CAP_ID_EXP);
if (!ctrl->cap_base) {
- ctrl_err(ctrl, "%s: Cannot find PCI Express capability\n",
- __func__);
- goto abort;
+ ctrl_err(ctrl, "Cannot find PCI Express capability\n");
+ goto abort_ctrl;
}
- if (pciehp_readl(ctrl, SLOTCAP, &slot_cap)) {
- ctrl_err(ctrl, "%s: Cannot read SLOTCAP register\n", __func__);
- goto abort;
+ if (pciehp_readl(ctrl, PCI_EXP_SLTCAP, &slot_cap)) {
+ ctrl_err(ctrl, "Cannot read SLOTCAP register\n");
+ goto abort_ctrl;
}
ctrl->slot_cap = slot_cap;
!(POWER_CTRL(ctrl) | ATTN_LED(ctrl) | PWR_LED(ctrl) | EMI(ctrl)))
ctrl->no_cmd_complete = 1;
+ /* Check if Data Link Layer Link Active Reporting is implemented */
+ if (pciehp_readl(ctrl, PCI_EXP_LNKCAP, &link_cap)) {
+ ctrl_err(ctrl, "%s: Cannot read LNKCAP register\n", __func__);
+ goto abort_ctrl;
+ }
+ if (link_cap & PCI_EXP_LNKCAP_DLLLARC) {
+ ctrl_dbg(ctrl, "Link Active Reporting supported\n");
+ ctrl->link_active_reporting = 1;
+ }
+
/* Clear all remaining event bits in Slot Status register */
- if (pciehp_writew(ctrl, SLOTSTATUS, 0x1f))
+ if (pciehp_writew(ctrl, PCI_EXP_SLTSTA, 0x1f))
goto abort_ctrl;
/* Disable sotfware notification */
if (pcie_init_slot(ctrl))
goto abort_ctrl;
- if (pcie_init_notification(ctrl))
- goto abort_slot;
-
return ctrl;
-abort_slot:
- pcie_cleanup_slot(ctrl);
abort_ctrl:
kfree(ctrl);
abort:
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / blobdiff