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authorDave Jiang <dave.jiang@intel.com>2014-08-28 13:53:07 -0700
committerJon Mason <jdmason@kudzu.us>2014-10-17 07:08:50 -0400
commitb775e85bdb0395077a23bc072c4a62986883e276 (patch)
treed4d4a2074844d0949b4668f4422c6ee6ef4956e3 /drivers/ntb
parent6465d02ee15f7a45339b7e7859d0a0f22100ca87 (diff)
downloadlinux-b775e85bdb0395077a23bc072c4a62986883e276.tar.bz2
ntb: move platform detection to separate function
Move the platform detection function to separate functions to allow easier maintenence. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb')
-rw-r--r--drivers/ntb/ntb_hw.c74
1 files changed, 47 insertions, 27 deletions
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index a3990363a171..7567452250df 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -109,6 +109,41 @@ static const struct pci_device_id ntb_pci_tbl[] = {
};
MODULE_DEVICE_TABLE(pci, ntb_pci_tbl);
+static int is_ntb_xeon(struct ntb_device *ndev)
+{
+ switch (ndev->pdev->device) {
+ case PCI_DEVICE_ID_INTEL_NTB_SS_JSF:
+ case PCI_DEVICE_ID_INTEL_NTB_SS_SNB:
+ case PCI_DEVICE_ID_INTEL_NTB_SS_IVT:
+ case PCI_DEVICE_ID_INTEL_NTB_SS_HSX:
+ case PCI_DEVICE_ID_INTEL_NTB_PS_JSF:
+ case PCI_DEVICE_ID_INTEL_NTB_PS_SNB:
+ case PCI_DEVICE_ID_INTEL_NTB_PS_IVT:
+ case PCI_DEVICE_ID_INTEL_NTB_PS_HSX:
+ case PCI_DEVICE_ID_INTEL_NTB_B2B_JSF:
+ case PCI_DEVICE_ID_INTEL_NTB_B2B_SNB:
+ case PCI_DEVICE_ID_INTEL_NTB_B2B_IVT:
+ case PCI_DEVICE_ID_INTEL_NTB_B2B_HSX:
+ return 1;
+ default:
+ return 0;
+ }
+
+ return 0;
+}
+
+static int is_ntb_atom(struct ntb_device *ndev)
+{
+ switch (ndev->pdev->device) {
+ case PCI_DEVICE_ID_INTEL_NTB_B2B_BWD:
+ return 1;
+ default:
+ return 0;
+ }
+
+ return 0;
+}
+
/**
* ntb_register_event_callback() - register event callback
* @ndev: pointer to ntb_device instance
@@ -535,7 +570,7 @@ static void ntb_link_event(struct ntb_device *ndev, int link_state)
ndev->link_status = NTB_LINK_UP;
event = NTB_EVENT_HW_LINK_UP;
- if (ndev->hw_type == BWD_HW ||
+ if (is_ntb_atom(ndev) ||
ndev->conn_type == NTB_CONN_TRANSPARENT)
status = readw(ndev->reg_ofs.lnk_stat);
else {
@@ -566,7 +601,7 @@ static int ntb_link_status(struct ntb_device *ndev)
{
int link_state;
- if (ndev->hw_type == BWD_HW) {
+ if (is_ntb_atom(ndev)) {
u32 ntb_cntl;
ntb_cntl = readl(ndev->reg_ofs.lnk_cntl);
@@ -932,27 +967,12 @@ static int ntb_device_setup(struct ntb_device *ndev)
{
int rc;
- switch (ndev->pdev->device) {
- case PCI_DEVICE_ID_INTEL_NTB_SS_JSF:
- case PCI_DEVICE_ID_INTEL_NTB_SS_SNB:
- case PCI_DEVICE_ID_INTEL_NTB_SS_IVT:
- case PCI_DEVICE_ID_INTEL_NTB_SS_HSX:
- case PCI_DEVICE_ID_INTEL_NTB_PS_JSF:
- case PCI_DEVICE_ID_INTEL_NTB_PS_SNB:
- case PCI_DEVICE_ID_INTEL_NTB_PS_IVT:
- case PCI_DEVICE_ID_INTEL_NTB_PS_HSX:
- case PCI_DEVICE_ID_INTEL_NTB_B2B_JSF:
- case PCI_DEVICE_ID_INTEL_NTB_B2B_SNB:
- case PCI_DEVICE_ID_INTEL_NTB_B2B_IVT:
- case PCI_DEVICE_ID_INTEL_NTB_B2B_HSX:
+ if (is_ntb_xeon(ndev))
rc = ntb_xeon_setup(ndev);
- break;
- case PCI_DEVICE_ID_INTEL_NTB_B2B_BWD:
+ else if (is_ntb_atom(ndev))
rc = ntb_bwd_setup(ndev);
- break;
- default:
+ else
rc = -ENODEV;
- }
if (rc)
return rc;
@@ -970,7 +990,7 @@ static int ntb_device_setup(struct ntb_device *ndev)
static void ntb_device_free(struct ntb_device *ndev)
{
- if (ndev->hw_type == BWD_HW) {
+ if (is_ntb_atom(ndev)) {
cancel_delayed_work_sync(&ndev->hb_timer);
cancel_delayed_work_sync(&ndev->lr_timer);
}
@@ -1050,7 +1070,7 @@ static irqreturn_t ntb_interrupt(int irq, void *dev)
struct ntb_device *ndev = dev;
unsigned int i = 0;
- if (ndev->hw_type == BWD_HW) {
+ if (is_ntb_atom(ndev)) {
u64 ldb = readq(ndev->reg_ofs.ldb);
dev_dbg(&ndev->pdev->dev, "irq %d - ldb = %Lx\n", irq, ldb);
@@ -1192,7 +1212,7 @@ static int ntb_setup_msix(struct ntb_device *ndev)
for (i = 0; i < msix_entries; i++)
ndev->msix_entries[i].entry = i;
- if (ndev->hw_type == BWD_HW)
+ if (is_ntb_atom(ndev))
rc = ntb_setup_bwd_msix(ndev, msix_entries);
else
rc = ntb_setup_snb_msix(ndev, msix_entries);
@@ -1252,7 +1272,7 @@ static int ntb_setup_interrupts(struct ntb_device *ndev)
/* On BWD, disable all interrupts. On SNB, disable all but Link
* Interrupt. The rest will be unmasked as callbacks are registered.
*/
- if (ndev->hw_type == BWD_HW)
+ if (is_ntb_atom(ndev))
writeq(~0, ndev->reg_ofs.ldb_mask);
else {
u16 var = 1 << SNB_LINK_DB;
@@ -1285,7 +1305,7 @@ static void ntb_free_interrupts(struct ntb_device *ndev)
struct pci_dev *pdev = ndev->pdev;
/* mask interrupts */
- if (ndev->hw_type == BWD_HW)
+ if (is_ntb_atom(ndev))
writeq(~0, ndev->reg_ofs.ldb_mask);
else
writew(~0, ndev->reg_ofs.ldb_mask);
@@ -1296,7 +1316,7 @@ static void ntb_free_interrupts(struct ntb_device *ndev)
for (i = 0; i < ndev->num_msix; i++) {
msix = &ndev->msix_entries[i];
- if (ndev->hw_type != BWD_HW && i == ndev->num_msix - 1)
+ if (is_ntb_xeon(ndev) && i == ndev->num_msix - 1)
free_irq(msix->vector, ndev);
else
free_irq(msix->vector, &ndev->db_cb[i]);
@@ -1385,7 +1405,7 @@ static ssize_t ntb_debugfs_read(struct file *filp, char __user *ubuf,
ndev->link_width);
}
- if (ndev->hw_type != BWD_HW) {
+ if (is_ntb_xeon(ndev)) {
u32 status32;
u16 status16;
int rc;