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authorAlex Deucher <alexdeucher@gmail.com>2010-06-30 11:52:50 -0400
committerDave Airlie <airlied@redhat.com>2010-08-02 10:00:07 +1000
commit351a52a2414d2b104269755c86b476863c248034 (patch)
tree71e25c5cceab9235e5bca4a8d521f73b3adf3fa6 /drivers/gpu/drm/radeon/radeon_device.c
parentfe50ac78a6ec20db267b32e27a1d191128eaaa46 (diff)
downloadblackbird-op-linux-351a52a2414d2b104269755c86b476863c248034.tar.gz
blackbird-op-linux-351a52a2414d2b104269755c86b476863c248034.zip
drm/radeon/kms: add ioport register access
This is required for the NB_MISC regs on rs780/rs880 which means HDMI/DVI/DP ports using PCIEPHY won't work without it. It might also help with s/r (asic init) issues on other atombios cards. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=28774 and similar issues reported by Alberto Milone. [airlied: Squash io fix patch] Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Tested-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_device.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_device.c40
1 files changed, 39 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 37533bec1f25..fefeb0f958bf 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -415,6 +415,22 @@ static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
return r;
}
+static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
+{
+ struct radeon_device *rdev = info->dev->dev_private;
+
+ WREG32_IO(reg*4, val);
+}
+
+static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
+{
+ struct radeon_device *rdev = info->dev->dev_private;
+ uint32_t r;
+
+ r = RREG32_IO(reg*4);
+ return r;
+}
+
int radeon_atombios_init(struct radeon_device *rdev)
{
struct card_info *atom_card_info =
@@ -427,6 +443,15 @@ int radeon_atombios_init(struct radeon_device *rdev)
atom_card_info->dev = rdev->ddev;
atom_card_info->reg_read = cail_reg_read;
atom_card_info->reg_write = cail_reg_write;
+ /* needed for iio ops */
+ if (rdev->rio_mem) {
+ atom_card_info->ioreg_read = cail_ioreg_read;
+ atom_card_info->ioreg_write = cail_ioreg_write;
+ } else {
+ DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
+ atom_card_info->ioreg_read = cail_reg_read;
+ atom_card_info->ioreg_write = cail_reg_write;
+ }
atom_card_info->mc_read = cail_mc_read;
atom_card_info->mc_write = cail_mc_write;
atom_card_info->pll_read = cail_pll_read;
@@ -573,7 +598,7 @@ int radeon_device_init(struct radeon_device *rdev,
struct pci_dev *pdev,
uint32_t flags)
{
- int r;
+ int r, i;
int dma_bits;
rdev->shutdown = false;
@@ -659,6 +684,17 @@ int radeon_device_init(struct radeon_device *rdev,
DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
+ /* io port mapping */
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
+ rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
+ rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
+ break;
+ }
+ }
+ if (rdev->rio_mem == NULL)
+ DRM_ERROR("Unable to find PCI I/O BAR\n");
+
/* if we have > 1 VGA cards, then disable the radeon VGA resources */
/* this will fail for cards that aren't VGA class devices, just
* ignore it */
@@ -701,6 +737,8 @@ void radeon_device_fini(struct radeon_device *rdev)
destroy_workqueue(rdev->wq);
vga_switcheroo_unregister_client(rdev->pdev);
vga_client_register(rdev->pdev, NULL, NULL, NULL);
+ pci_iounmap(rdev->pdev, rdev->rio_mem);
+ rdev->rio_mem = NULL;
iounmap(rdev->rmmio);
rdev->rmmio = NULL;
}
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