static int postinit(struct drm_device *dev, unsigned long flags)
{
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d: %s\n",
DRIVER_NAME,
DRIVER_MAJOR,
DRIVER_MINOR,
DRIVER_PATCHLEVEL,
DRIVER_DATE, dev->primary.minor, pci_pretty_name(dev->pdev)
);
return 0;
}
int postinit(struct drm_device *dev, unsigned long flags)
{
dev->counters += 4;
dev->types[6] = _DRM_STAT_IRQ;
dev->types[7] = _DRM_STAT_PRIMARY;
dev->types[8] = _DRM_STAT_SECONDARY;
dev->types[9] = _DRM_STAT_DMA;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d: %s\n",
DRIVER_NAME,
DRIVER_MAJOR,
DRIVER_MINOR,
DRIVER_PATCHLEVEL,
DRIVER_DATE, dev->primary.minor, pci_pretty_name(dev->pdev)
);
return 0;
}
/**
* Register.
*
* \param pdev - PCI device structure
* \param ent entry from the PCI ID table with device type flags
* \return zero on success or a negative number on failure.
*
* Attempt to gets inter module "drm" information. If we are first
* then register the character device and inter module information.
* Try and register, if we fail to register, backout previous work.
*/
int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
struct drm_driver *driver)
{
drm_device_t *dev;
int ret;
DRM_DEBUG("\n");
dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
if (!dev)
return -ENOMEM;
if (!drm_fb_loaded) {
pci_set_drvdata(pdev, dev);
pci_request_regions(pdev, driver->pci_driver.name);
pci_enable_device(pdev);
}
if ((ret = fill_in_dev(dev, pdev, ent, driver))) {
goto err_g1;
}
if ((ret = drm_get_head(dev, &dev->primary)))
goto err_g1;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d: %s\n",
driver->name, driver->major, driver->minor, driver->patchlevel,
driver->date, dev->primary.minor, pci_pretty_name(dev->pdev));
return 0;
err_g1:
if (!drm_fb_loaded) {
pci_set_drvdata(pdev, NULL);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
printk(KERN_ERR "DRM: drm_get_dev failed.\n");
return ret;
}
int mthca_reset(struct mthca_dev *mdev)
{
int i;
int err = 0;
u32 *hca_header = NULL;
u32 *bridge_header = NULL;
struct pci_dev *bridge = NULL;
#define MTHCA_RESET_OFFSET 0xf0010
#define MTHCA_RESET_VALUE swab32(1)
/*
* Reset the chip. This is somewhat ugly because we have to
* save off the PCI header before reset and then restore it
* after the chip reboots. We skip config space offsets 22
* and 23 since those have a special meaning.
*
* To make matters worse, for Tavor (PCI-X HCA) we have to
* find the associated bridge device and save off its PCI
* header as well.
*/
if (!(mdev->mthca_flags & MTHCA_FLAG_PCIE)) {
/* Look for the bridge -- its device ID will be 2 more
than HCA's device ID. */
while ((bridge = pci_get_device(mdev->pdev->vendor,
mdev->pdev->device + 2,
bridge)) != NULL) {
if (bridge->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
bridge->subordinate == mdev->pdev->bus) {
mthca_dbg(mdev, "Found bridge: %s (%s)\n",
pci_pretty_name(bridge), pci_name(bridge));
break;
}
}
if (!bridge) {
/*
* Didn't find a bridge for a Tavor device --
* assume we're in no-bridge mode and hope for
* the best.
*/
mthca_warn(mdev, "No bridge found for %s (%s)\n",
pci_pretty_name(mdev->pdev), pci_name(mdev->pdev));
}
}
/* For Arbel do we need to save off the full 4K PCI Express header?? */
hca_header = kmalloc(256, GFP_KERNEL);
if (!hca_header) {
err = -ENOMEM;
mthca_err(mdev, "Couldn't allocate memory to save HCA "
"PCI header, aborting.\n");
goto out;
}
for (i = 0; i < 64; ++i) {
if (i == 22 || i == 23)
continue;
if (pci_read_config_dword(mdev->pdev, i * 4, hca_header + i)) {
err = -ENODEV;
mthca_err(mdev, "Couldn't save HCA "
"PCI header, aborting.\n");
goto out;
}
}
if (bridge) {
bridge_header = kmalloc(256, GFP_KERNEL);
if (!bridge_header) {
err = -ENOMEM;
mthca_err(mdev, "Couldn't allocate memory to save HCA "
"bridge PCI header, aborting.\n");
goto out;
}
for (i = 0; i < 64; ++i) {
if (i == 22 || i == 23)
continue;
if (pci_read_config_dword(bridge, i * 4, bridge_header + i)) {
err = -ENODEV;
mthca_err(mdev, "Couldn't save HCA bridge "
"PCI header, aborting.\n");
goto out;
}
}
}
/* actually hit reset */
{
void __iomem *reset = ioremap(pci_resource_start(mdev->pdev, 0) +
MTHCA_RESET_OFFSET, 4);
if (!reset) {
err = -ENOMEM;
mthca_err(mdev, "Couldn't map HCA reset register, "
"aborting.\n");
goto out;
}
writel(MTHCA_RESET_VALUE, reset);
iounmap(reset);
}
/* Docs say to wait one second before accessing device */
msleep(1000);
/* Now wait for PCI device to start responding again */
{
u32 v;
int c = 0;
for (c = 0; c < 100; ++c) {
if (pci_read_config_dword(bridge ? bridge : mdev->pdev, 0, &v)) {
err = -ENODEV;
mthca_err(mdev, "Couldn't access HCA after reset, "
"aborting.\n");
goto out;
}
if (v != 0xffffffff)
goto good;
msleep(100);
}
err = -ENODEV;
mthca_err(mdev, "PCI device did not come back after reset, "
"aborting.\n");
goto out;
}
good:
/* Now restore the PCI headers */
if (bridge) {
/*
* Bridge control register is at 0x3e, so we'll
* naturally restore it last in this loop.
*/
for (i = 0; i < 16; ++i) {
if (i * 4 == PCI_COMMAND)
continue;
if (pci_write_config_dword(bridge, i * 4, bridge_header[i])) {
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA bridge reg %x, "
"aborting.\n", i);
goto out;
}
}
if (pci_write_config_dword(bridge, PCI_COMMAND,
bridge_header[PCI_COMMAND / 4])) {
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA bridge COMMAND, "
"aborting.\n");
goto out;
}
}
for (i = 0; i < 16; ++i) {
if (i * 4 == PCI_COMMAND)
continue;
if (pci_write_config_dword(mdev->pdev, i * 4, hca_header[i])) {
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA reg %x, "
"aborting.\n", i);
goto out;
}
}
if (pci_write_config_dword(mdev->pdev, PCI_COMMAND,
hca_header[PCI_COMMAND / 4])) {
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA COMMAND, "
"aborting.\n");
goto out;
}
out:
if (bridge)
pci_dev_put(bridge);
kfree(bridge_header);
kfree(hca_header);
return err;
}
