Sometimes an interrupt from GPU is ignored while we
are still executing the previous interrupt. In order
to service any interrupt that was fired while executing
the interrupt handler, clear the interrupt register
immediately.
Also, clear the ADRENO_INT_RBBM_AHB_ERROR bit not before
but after it's serviced in its respective handler. This
will avoid firing the main interrupt handler a second
time.
CRs-Fixed:
1072781
Change-Id: Ie6b5a511f5b3077adae7d464de437f2aa893b0c9
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
struct adreno_gpudev *gpudev = ADRENO_GPU_DEVICE(adreno_dev);
struct adreno_irq *irq_params = gpudev->irq;
irqreturn_t ret = IRQ_NONE;
- unsigned int status = 0, tmp;
+ unsigned int status = 0, tmp, int_bit;
int i;
adreno_readreg(adreno_dev, ADRENO_REG_RBBM_INT_0_STATUS, &status);
+ /*
+ * Clear all the interrupt bits but ADRENO_INT_RBBM_AHB_ERROR. Because
+ * even if we clear it here, it will stay high until it is cleared
+ * in its respective handler. Otherwise, the interrupt handler will
+ * fire again.
+ */
+ int_bit = ADRENO_INT_BIT(adreno_dev, ADRENO_INT_RBBM_AHB_ERROR);
+ adreno_writereg(adreno_dev, ADRENO_REG_RBBM_INT_CLEAR_CMD,
+ status & ~int_bit);
+
/* Loop through all set interrupts and call respective handlers */
for (tmp = status; tmp != 0;) {
i = fls(tmp) - 1;
gpudev->irq_trace(adreno_dev, status);
- if (status)
+ /*
+ * Clear ADRENO_INT_RBBM_AHB_ERROR bit after this interrupt has been
+ * cleared in its respective handler
+ */
+ if (status & int_bit)
adreno_writereg(adreno_dev, ADRENO_REG_RBBM_INT_CLEAR_CMD,
- status);
+ int_bit);
+
return ret;
}
/* Time to allow preemption to complete (in ms) */
#define ADRENO_PREEMPT_TIMEOUT 10000
+#define ADRENO_INT_BIT(a, _bit) (((a)->gpucore->gpudev->int_bits) ? \
+ (adreno_get_int(a, _bit) < 0 ? 0 : \
+ BIT(adreno_get_int(a, _bit))) : 0)
+
/**
* enum adreno_preempt_states
* ADRENO_PREEMPT_NONE: No preemption is scheduled
ADRENO_REG_REGISTER_MAX,
};
+enum adreno_int_bits {
+ ADRENO_INT_RBBM_AHB_ERROR,
+ ADRENO_INT_BITS_MAX,
+};
+
/**
* adreno_reg_offsets: Holds array of register offsets
* @offsets: Offset array of size defined by enum adreno_regs
#define ADRENO_REG_UNUSED 0xFFFFFFFF
#define ADRENO_REG_SKIP 0xFFFFFFFE
#define ADRENO_REG_DEFINE(_offset, _reg) [_offset] = _reg
+#define ADRENO_INT_DEFINE(_offset, _val) ADRENO_REG_DEFINE(_offset, _val)
/*
* struct adreno_vbif_data - Describes vbif register value pair
* so define them in the structure and use them as variables.
*/
const struct adreno_reg_offsets *reg_offsets;
+ unsigned int *const int_bits;
const struct adreno_ft_perf_counters *ft_perf_counters;
unsigned int ft_perf_counters_count;
return gpudev->reg_offsets->offsets[offset_name];
}
+/*
+ * adreno_get_int() - Returns the offset value of an interrupt bit from
+ * the interrupt bit array in the gpudev node
+ * @adreno_dev: Pointer to the the adreno device
+ * @bit_name: The interrupt bit enum whose bit is returned
+ */
+static inline unsigned int adreno_get_int(struct adreno_device *adreno_dev,
+ enum adreno_int_bits bit_name)
+{
+ struct adreno_gpudev *gpudev = ADRENO_GPU_DEVICE(adreno_dev);
+
+ if (bit_name >= ADRENO_INT_BITS_MAX)
+ return -ERANGE;
+
+ return gpudev->int_bits[bit_name];
+}
+
/**
* adreno_gpu_fault() - Return the current state of the GPU
* @adreno_dev: A pointer to the adreno_device to query
.groups = a3xx_coresight_groups,
};
+static unsigned int a3xx_int_bits[ADRENO_INT_BITS_MAX] = {
+ ADRENO_INT_DEFINE(ADRENO_INT_RBBM_AHB_ERROR, A3XX_INT_RBBM_AHB_ERROR),
+};
+
/* Register offset defines for A3XX */
static unsigned int a3xx_register_offsets[ADRENO_REG_REGISTER_MAX] = {
ADRENO_REG_DEFINE(ADRENO_REG_CP_ME_RAM_WADDR, A3XX_CP_ME_RAM_WADDR),
struct adreno_gpudev adreno_a3xx_gpudev = {
.reg_offsets = &a3xx_reg_offsets,
+ .int_bits = a3xx_int_bits,
.ft_perf_counters = a3xx_ft_perf_counters,
.ft_perf_counters_count = ARRAY_SIZE(a3xx_ft_perf_counters),
.perfcounters = &a3xx_perfcounters,
}
}
+static unsigned int a4xx_int_bits[ADRENO_INT_BITS_MAX] = {
+ ADRENO_INT_DEFINE(ADRENO_INT_RBBM_AHB_ERROR, A4XX_INT_RBBM_AHB_ERROR),
+};
+
/* Register offset defines for A4XX, in order of enum adreno_regs */
static unsigned int a4xx_register_offsets[ADRENO_REG_REGISTER_MAX] = {
ADRENO_REG_DEFINE(ADRENO_REG_CP_ME_RAM_WADDR, A4XX_CP_ME_RAM_WADDR),
struct adreno_gpudev adreno_a4xx_gpudev = {
.reg_offsets = &a4xx_reg_offsets,
+ .int_bits = a4xx_int_bits,
.ft_perf_counters = a4xx_ft_perf_counters,
.ft_perf_counters_count = ARRAY_SIZE(a4xx_ft_perf_counters),
.perfcounters = &a4xx_perfcounters,
{KGSL_PERFCOUNTER_GROUP_TSE, A5XX_TSE_INPUT_PRIM_NUM},
};
+static unsigned int a5xx_int_bits[ADRENO_INT_BITS_MAX] = {
+ ADRENO_INT_DEFINE(ADRENO_INT_RBBM_AHB_ERROR, A5XX_INT_RBBM_AHB_ERROR),
+};
+
/* Register offset defines for A5XX, in order of enum adreno_regs */
static unsigned int a5xx_register_offsets[ADRENO_REG_REGISTER_MAX] = {
ADRENO_REG_DEFINE(ADRENO_REG_CP_WFI_PEND_CTR, A5XX_CP_WFI_PEND_CTR),
struct adreno_gpudev adreno_a5xx_gpudev = {
.reg_offsets = &a5xx_reg_offsets,
+ .int_bits = a5xx_int_bits,
.ft_perf_counters = a5xx_ft_perf_counters,
.ft_perf_counters_count = ARRAY_SIZE(a5xx_ft_perf_counters),
.coresight = &a5xx_coresight,