#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/delay.h>
+#include <linux/slab.h>
#include "mthca_dev.h"
#include "mthca_cmd.h"
u32 *hca_header = NULL;
u32 *bridge_header = NULL;
struct pci_dev *bridge = NULL;
+ int bridge_pcix_cap = 0;
+ int hca_pcie_cap = 0;
+ int hca_pcix_cap = 0;
+
+ u16 devctl;
+ u16 linkctl;
#define MTHCA_RESET_OFFSET 0xf0010
#define MTHCA_RESET_VALUE swab32(1)
}
}
+ hca_pcix_cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
+ hca_pcie_cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP);
+
if (bridge) {
bridge_header = kmalloc(256, GFP_KERNEL);
if (!bridge_header) {
goto out;
}
}
+ bridge_pcix_cap = pci_find_capability(bridge, PCI_CAP_ID_PCIX);
+ if (!bridge_pcix_cap) {
+ err = -ENODEV;
+ mthca_err(mdev, "Couldn't locate HCA bridge "
+ "PCI-X capability, aborting.\n");
+ goto out;
+ }
}
/* actually hit reset */
good:
/* Now restore the PCI headers */
if (bridge) {
+ if (pci_write_config_dword(bridge, bridge_pcix_cap + 0x8,
+ bridge_header[(bridge_pcix_cap + 0x8) / 4])) {
+ err = -ENODEV;
+ mthca_err(mdev, "Couldn't restore HCA bridge Upstream "
+ "split transaction control, aborting.\n");
+ goto out;
+ }
+ if (pci_write_config_dword(bridge, bridge_pcix_cap + 0xc,
+ bridge_header[(bridge_pcix_cap + 0xc) / 4])) {
+ err = -ENODEV;
+ mthca_err(mdev, "Couldn't restore HCA bridge Downstream "
+ "split transaction control, aborting.\n");
+ goto out;
+ }
/*
* Bridge control register is at 0x3e, so we'll
* naturally restore it last in this loop.
}
}
+ if (hca_pcix_cap) {
+ if (pci_write_config_dword(mdev->pdev, hca_pcix_cap,
+ hca_header[hca_pcix_cap / 4])) {
+ err = -ENODEV;
+ mthca_err(mdev, "Couldn't restore HCA PCI-X "
+ "command register, aborting.\n");
+ goto out;
+ }
+ }
+
+ if (hca_pcie_cap) {
+ devctl = hca_header[(hca_pcie_cap + PCI_EXP_DEVCTL) / 4];
+ if (pci_write_config_word(mdev->pdev, hca_pcie_cap + PCI_EXP_DEVCTL,
+ devctl)) {
+ err = -ENODEV;
+ mthca_err(mdev, "Couldn't restore HCA PCI Express "
+ "Device Control register, aborting.\n");
+ goto out;
+ }
+ linkctl = hca_header[(hca_pcie_cap + PCI_EXP_LNKCTL) / 4];
+ if (pci_write_config_word(mdev->pdev, hca_pcie_cap + PCI_EXP_LNKCTL,
+ linkctl)) {
+ err = -ENODEV;
+ mthca_err(mdev, "Couldn't restore HCA PCI Express "
+ "Link control register, aborting.\n");
+ goto out;
+ }
+ }
+
for (i = 0; i < 16; ++i) {
if (i * 4 == PCI_COMMAND)
continue;