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accel/ivpu/37xx: Fix missing VPUIP interrupts 

Move sequence of masking and unmasking global interrupts from buttress
interrupt handler to generic one that handles both VPUIP and BTRS
interrupts. Unmasking global interrupts will re-trigger MSI for any
pending interrupts.

Lack of this sequence will cause the driver to miss any
VPUIP interrupt that comes after reading VPU_37XX_HOST_SS_ICB_STATUS_0
and before clearing all active interrupt sources.

Fixes: 35b137630f ("accel/ivpu: Introduce a new DRM driver for Intel VPU")
Cc: stable@vger.kernel.org
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231024161952.759914-1-stanislaw.gruszka@linux.intel.com
This commit is contained in:
Karol Wachowski 2023-10-24 18:19:52 +02:00 committed by Stanislaw Gruszka
parent 4e6c38c387
commit b132ac51d7
1 changed files with 5 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/accel/ivpu/ivpu_hw_37xx.c
View File

@ -940,9 +940,6 @@ static u32 ivpu_hw_37xx_irqb_handler(struct ivpu_device *vdev, int irq)
if (status == 0)
return 0;
/* Disable global interrupt before handling local buttress interrupts */
REGB_WR32(VPU_37XX_BUTTRESS_GLOBAL_INT_MASK, 0x1);
if (REG_TEST_FLD(VPU_37XX_BUTTRESS_INTERRUPT_STAT, FREQ_CHANGE, status))
ivpu_dbg(vdev, IRQ, "FREQ_CHANGE irq: %08x",
REGB_RD32(VPU_37XX_BUTTRESS_CURRENT_PLL));
@ -974,9 +971,6 @@ static u32 ivpu_hw_37xx_irqb_handler(struct ivpu_device *vdev, int irq)
else
REGB_WR32(VPU_37XX_BUTTRESS_INTERRUPT_STAT, status);
/* Re-enable global interrupt */
REGB_WR32(VPU_37XX_BUTTRESS_GLOBAL_INT_MASK, 0x0);
if (schedule_recovery)
ivpu_pm_schedule_recovery(vdev);
@ -988,9 +982,14 @@ static irqreturn_t ivpu_hw_37xx_irq_handler(int irq, void *ptr)
struct ivpu_device *vdev = ptr;
u32 ret_irqv, ret_irqb;
REGB_WR32(VPU_37XX_BUTTRESS_GLOBAL_INT_MASK, 0x1);
ret_irqv = ivpu_hw_37xx_irqv_handler(vdev, irq);
ret_irqb = ivpu_hw_37xx_irqb_handler(vdev, irq);
/* Re-enable global interrupts to re-trigger MSI for pending interrupts */
REGB_WR32(VPU_37XX_BUTTRESS_GLOBAL_INT_MASK, 0x0);
return IRQ_RETVAL(ret_irqb | ret_irqv);
}