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drm/radeon/kms: add support for msi

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Try to enable msi on chips that support it.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2009-10-16 12:21:24 -04:00 committed by Dave Airlie
parent ebbe1cb936
commit 3e5cb98dfe
5 changed files with 49 additions and 2 deletions
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17
drivers/gpu/drm/radeon/r100.c
View file

@ -186,7 +186,7 @@ static inline uint32_t r100_irq_ack(struct radeon_device *rdev)
int r100_irq_process(struct radeon_device *rdev)
{
uint32_t status;
uint32_t status, msi_rearm;
status = r100_irq_ack(rdev);
if (!status) {
@ -209,6 +209,21 @@ int r100_irq_process(struct radeon_device *rdev)
}
status = r100_irq_ack(rdev);
}
if (rdev->msi_enabled) {
switch (rdev->family) {
case CHIP_RS400:
case CHIP_RS480:
msi_rearm = RREG32(RADEON_AIC_CNTL) & ~RS400_MSI_REARM;
WREG32(RADEON_AIC_CNTL, msi_rearm);
WREG32(RADEON_AIC_CNTL, msi_rearm | RS400_MSI_REARM);
break;
default:
msi_rearm = RREG32(RADEON_MSI_REARM_EN) & ~RV370_MSI_REARM_EN;
WREG32(RADEON_MSI_REARM_EN, msi_rearm);
WREG32(RADEON_MSI_REARM_EN, msi_rearm | RV370_MSI_REARM_EN);
break;
}
}
return IRQ_HANDLED;
}

1
drivers/gpu/drm/radeon/radeon.h
View file

@ -784,6 +784,7 @@ struct radeon_device {
const struct firmware *me_fw; /* all family ME firmware */
const struct firmware *pfp_fw; /* r6/700 PFP firmware */
struct r600_blit r600_blit;
int msi_enabled; /* msi enabled */
};
int radeon_device_init(struct radeon_device *rdev,

9
drivers/gpu/drm/radeon/radeon_irq_kms.c
View file

@ -92,6 +92,13 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
if (r) {
return r;
}
/* enable msi */
rdev->msi_enabled = 0;
if (rdev->family >= CHIP_RV380) {
int ret = pci_enable_msi(rdev->pdev);
if (!ret)
rdev->msi_enabled = 1;
}
drm_irq_install(rdev->ddev);
rdev->irq.installed = true;
DRM_INFO("radeon: irq initialized.\n");
@ -103,5 +110,7 @@ void radeon_irq_kms_fini(struct radeon_device *rdev)
if (rdev->irq.installed) {
rdev->irq.installed = false;
drm_irq_uninstall(rdev->ddev);
if (rdev->msi_enabled)
pci_disable_msi(rdev->pdev);
}
}

6
drivers/gpu/drm/radeon/radeon_reg.h
View file

@ -290,6 +290,8 @@
#define RADEON_BUS_CNTL 0x0030
# define RADEON_BUS_MASTER_DIS (1 << 6)
# define RADEON_BUS_BIOS_DIS_ROM (1 << 12)
# define RS600_BUS_MASTER_DIS (1 << 14)
# define RS600_MSI_REARM (1 << 20) /* rs600/rs690/rs740 */
# define RADEON_BUS_RD_DISCARD_EN (1 << 24)
# define RADEON_BUS_RD_ABORT_EN (1 << 25)
# define RADEON_BUS_MSTR_DISCONNECT_EN (1 << 28)
@ -297,6 +299,9 @@
# define RADEON_BUS_READ_BURST (1 << 30)
#define RADEON_BUS_CNTL1 0x0034
# define RADEON_BUS_WAIT_ON_LOCK_EN (1 << 4)
/* rv370/rv380, rv410, r423/r430/r480, r5xx */
#define RADEON_MSI_REARM_EN 0x0160
# define RV370_MSI_REARM_EN (1 << 0)
/* #define RADEON_PCIE_INDEX 0x0030 */
/* #define RADEON_PCIE_DATA 0x0034 */
@ -3311,6 +3316,7 @@
#define RADEON_AIC_CNTL 0x01d0
# define RADEON_PCIGART_TRANSLATE_EN (1 << 0)
# define RADEON_DIS_OUT_OF_PCI_GART_ACCESS (1 << 1)
# define RS400_MSI_REARM (1 << 3) /* rs400/rs480 */
#define RADEON_AIC_LO_ADDR 0x01dc
#define RADEON_AIC_PT_BASE 0x01d8
#define RADEON_AIC_HI_ADDR 0x01e0

18
drivers/gpu/drm/radeon/rs600.c
View file

@ -242,7 +242,7 @@ void rs600_irq_disable(struct radeon_device *rdev)
int rs600_irq_process(struct radeon_device *rdev)
{
uint32_t status;
uint32_t status, msi_rearm;
uint32_t r500_disp_int;
status = rs600_irq_ack(rdev, &r500_disp_int);
@ -260,6 +260,22 @@ int rs600_irq_process(struct radeon_device *rdev)
drm_handle_vblank(rdev->ddev, 1);
status = rs600_irq_ack(rdev, &r500_disp_int);
}
if (rdev->msi_enabled) {
switch (rdev->family) {
case CHIP_RS600:
case CHIP_RS690:
case CHIP_RS740:
msi_rearm = RREG32(RADEON_BUS_CNTL) & ~RS600_MSI_REARM;
WREG32(RADEON_BUS_CNTL, msi_rearm);
WREG32(RADEON_BUS_CNTL, msi_rearm | RS600_MSI_REARM);
break;
default:
msi_rearm = RREG32(RADEON_MSI_REARM_EN) & ~RV370_MSI_REARM_EN;
WREG32(RADEON_MSI_REARM_EN, msi_rearm);
WREG32(RADEON_MSI_REARM_EN, msi_rearm | RV370_MSI_REARM_EN);
break;
}
}
return IRQ_HANDLED;
}