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accel/ivpu/37xx: Fix missing VPUIP interrupts

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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
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11
drivers/accel/ivpu/ivpu_hw_37xx.c
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@ -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);
}