static int a6xx_rpmh_start(struct a6xx_gmu *gmu)
{
int ret;
u32 val;
gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1 << 1);
/* Wait for the register to finish posting */
wmb();
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_RSCC_CONTROL_ACK, val,
val & (1 << 1), 100, 10000);
if (ret) {
DRM_DEV_ERROR(gmu->dev, "Unable to power on the GPU RSC\n");
return ret;
}
ret = gmu_poll_timeout(gmu, REG_A6XX_RSCC_SEQ_BUSY_DRV0, val,
!val, 100, 10000);
if (ret) {
DRM_DEV_ERROR(gmu->dev, "GPU RSC sequence stuck while waking up the GPU\n");
return ret;
}
gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0);
/* Set up CX GMU counter 0 to count busy ticks */
gmu_write(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_MASK, 0xff000000);
gmu_rmw(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_SELECT_0, 0xff, 0x20);
/* Enable the power counter */
gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1);
return 0;
}
/* Let the GMU know that we are about to go into slumber */
static int a6xx_gmu_notify_slumber(struct a6xx_gmu *gmu)
{
int ret;
/* Disable the power counter so the GMU isn't busy */
gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 0);
/* Disable SPTP_PC if the CPU is responsible for it */
if (gmu->idle_level < GMU_IDLE_STATE_SPTP)
a6xx_sptprac_disable(gmu);
/* Tell the GMU to get ready to slumber */
gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 1);
ret = a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER);
a6xx_gmu_clear_oob(gmu, GMU_OOB_BOOT_SLUMBER);
if (!ret) {
/* Check to see if the GMU really did slumber */
if (gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE)
!= 0x0f) {
DRM_DEV_ERROR(gmu->dev, "The GMU did not go into slumber\n");
ret = -ETIMEDOUT;
}
}
/* Put fence into allow mode */
gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0);
return ret;
}
static void __a6xx_gmu_set_freq(struct a6xx_gmu *gmu, int index)
{
struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
struct msm_gpu *gpu = &adreno_gpu->base;
int ret;
gmu_write(gmu, REG_A6XX_GMU_DCVS_ACK_OPTION, 0);
gmu_write(gmu, REG_A6XX_GMU_DCVS_PERF_SETTING,
((3 & 0xf) << 28) | index);
/*
* Send an invalid index as a vote for the bus bandwidth and let the
* firmware decide on the right vote
*/
gmu_write(gmu, REG_A6XX_GMU_DCVS_BW_SETTING, 0xff);
/* Set and clear the OOB for DCVS to trigger the GMU */
a6xx_gmu_set_oob(gmu, GMU_OOB_DCVS_SET);
a6xx_gmu_clear_oob(gmu, GMU_OOB_DCVS_SET);
ret = gmu_read(gmu, REG_A6XX_GMU_DCVS_RETURN);
if (ret)
dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret);
gmu->freq = gmu->gpu_freqs[index];
/*
* Eventually we will want to scale the path vote with the frequency but
* for now leave it at max so that the performance is nominal.
*/
icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
}
static int a6xx_rpmh_start(struct a6xx_gmu *gmu)
{
int ret;
u32 val;
gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1 << 1);
/* Wait for the register to finish posting */
wmb();
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_RSCC_CONTROL_ACK, val,
val & (1 << 1), 100, 10000);
if (ret) {
dev_err(gmu->dev, "Unable to power on the GPU RSC\n");
return ret;
}
ret = gmu_poll_timeout(gmu, REG_A6XX_RSCC_SEQ_BUSY_DRV0, val,
!val, 100, 10000);
if (!ret) {
gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0);
/* Re-enable the power counter */
gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1);
return 0;
}
dev_err(gmu->dev, "GPU RSC sequence stuck while waking up the GPU\n");
return ret;
}
/* Set up the idle state for the GMU */
static void a6xx_gmu_power_config(struct a6xx_gmu *gmu)
{
/* Disable GMU WB/RB buffer */
gmu_write(gmu, REG_A6XX_GMU_SYS_BUS_CONFIG, 0x1);
gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0x9c40400);
switch (gmu->idle_level) {
case GMU_IDLE_STATE_IFPC:
gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_HYST,
GMU_PWR_COL_HYST);
gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0,
A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE |
A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_HM_POWER_COLLAPSE_ENABLE);
/* Fall through */
case GMU_IDLE_STATE_SPTP:
gmu_write(gmu, REG_A6XX_GMU_PWR_COL_SPTPRAC_HYST,
GMU_PWR_COL_HYST);
gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0,
A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE |
A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_SPTPRAC_POWER_CONTROL_ENABLE);
}
/* Enable RPMh GPU client */
gmu_rmw(gmu, REG_A6XX_GMU_RPMH_CTRL, 0,
A6XX_GMU_RPMH_CTRL_RPMH_INTERFACE_ENABLE |
A6XX_GMU_RPMH_CTRL_LLC_VOTE_ENABLE |
A6XX_GMU_RPMH_CTRL_DDR_VOTE_ENABLE |
A6XX_GMU_RPMH_CTRL_MX_VOTE_ENABLE |
A6XX_GMU_RPMH_CTRL_CX_VOTE_ENABLE |
A6XX_GMU_RPMH_CTRL_GFX_VOTE_ENABLE);
}
static void a6xx_gmu_irq_disable(struct a6xx_gmu *gmu)
{
disable_irq(gmu->gmu_irq);
disable_irq(gmu->hfi_irq);
gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~0);
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~0);
}
static void a6xx_gmu_irq_enable(struct a6xx_gmu *gmu)
{
gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0);
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, ~0);
gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK,
~A6XX_GMU_IRQ_MASK);
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK,
~A6XX_HFI_IRQ_MASK);
enable_irq(gmu->gmu_irq);
enable_irq(gmu->hfi_irq);
}
static void a6xx_rpmh_stop(struct a6xx_gmu *gmu)
{
int ret;
u32 val;
gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1);
ret = gmu_poll_timeout(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0,
val, val & (1 << 16), 100, 10000);
if (ret)
DRM_DEV_ERROR(gmu->dev, "Unable to power off the GPU RSC\n");
gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0);
}
/* Let the GMU know we are starting a boot sequence */
static int a6xx_gmu_gfx_rail_on(struct a6xx_gmu *gmu)
{
u32 vote;
/* Let the GMU know we are getting ready for boot */
gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 0);
/* Choose the "default" power level as the highest available */
vote = gmu->gx_arc_votes[gmu->nr_gpu_freqs - 1];
gmu_write(gmu, REG_A6XX_GMU_GX_VOTE_IDX, vote & 0xff);
gmu_write(gmu, REG_A6XX_GMU_MX_VOTE_IDX, (vote >> 8) & 0xff);
/* Let the GMU know the boot sequence has started */
return a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER);
}
static int a6xx_gmu_start(struct a6xx_gmu *gmu)
{
int ret;
u32 val;
gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1);
gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 0);
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, val,
val == 0xbabeface, 100, 10000);
if (ret)
DRM_DEV_ERROR(gmu->dev, "GMU firmware initialization timed out\n");
return ret;
}
/* Clear a pending OOB state in the GMU */
void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
{
switch (state) {
case GMU_OOB_GPU_SET:
gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET,
1 << GMU_OOB_GPU_SET_CLEAR);
break;
case GMU_OOB_BOOT_SLUMBER:
gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET,
1 << GMU_OOB_BOOT_SLUMBER_CLEAR);
break;
case GMU_OOB_DCVS_SET:
gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET,
1 << GMU_OOB_DCVS_CLEAR);
break;
}
}
/* Trigger a OOB (out of band) request to the GMU */
int a6xx_gmu_set_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
{
int ret;
u32 val;
int request, ack;
const char *name;
switch (state) {
case GMU_OOB_GPU_SET:
request = GMU_OOB_GPU_SET_REQUEST;
ack = GMU_OOB_GPU_SET_ACK;
name = "GPU_SET";
break;
case GMU_OOB_BOOT_SLUMBER:
request = GMU_OOB_BOOT_SLUMBER_REQUEST;
ack = GMU_OOB_BOOT_SLUMBER_ACK;
name = "BOOT_SLUMBER";
break;
case GMU_OOB_DCVS_SET:
request = GMU_OOB_DCVS_REQUEST;
ack = GMU_OOB_DCVS_ACK;
name = "GPU_DCVS";
break;
default:
return -EINVAL;
}
/* Trigger the equested OOB operation */
gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 1 << request);
/* Wait for the acknowledge interrupt */
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO, val,
val & (1 << ack), 100, 10000);
if (ret)
DRM_DEV_ERROR(gmu->dev,
"Timeout waiting for GMU OOB set %s: 0x%x\n",
name,
gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO));
/* Clear the acknowledge interrupt */
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, 1 << ack);
return ret;
}
static int a6xx_gmu_set_freq(struct a6xx_gmu *gmu, int index)
{
gmu_write(gmu, REG_A6XX_GMU_DCVS_ACK_OPTION, 0);
gmu_write(gmu, REG_A6XX_GMU_DCVS_PERF_SETTING,
((index << 24) & 0xff) | (3 & 0xf));
/*
* Send an invalid index as a vote for the bus bandwidth and let the
* firmware decide on the right vote
*/
gmu_write(gmu, REG_A6XX_GMU_DCVS_BW_SETTING, 0xff);
/* Set and clear the OOB for DCVS to trigger the GMU */
a6xx_gmu_set_oob(gmu, GMU_OOB_DCVS_SET);
a6xx_gmu_clear_oob(gmu, GMU_OOB_DCVS_SET);
return gmu_read(gmu, REG_A6XX_GMU_DCVS_RETURN);
}
static int a6xx_gmu_hfi_start(struct a6xx_gmu *gmu)
{
u32 val;
int ret;
gmu_write(gmu, REG_A6XX_GMU_HFI_CTRL_INIT, 1);
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_HFI_CTRL_STATUS, val,
val & 1, 100, 10000);
if (ret)
DRM_DEV_ERROR(gmu->dev, "Unable to start the HFI queues\n");
return ret;
}
static irqreturn_t a6xx_hfi_irq(int irq, void *data)
{
struct a6xx_gmu *gmu = data;
u32 status;
status = gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO);
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, status);
if (status & A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) {
dev_err_ratelimited(gmu->dev, "GMU firmware fault\n");
a6xx_gmu_fault(gmu);
}
return IRQ_HANDLED;
}
static int a6xx_gmu_hfi_start(struct a6xx_gmu *gmu)
{
u32 val;
int ret;
gmu_rmw(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK,
A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ, 0);
gmu_write(gmu, REG_A6XX_GMU_HFI_CTRL_INIT, 1);
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_HFI_CTRL_STATUS, val,
val & 1, 100, 10000);
if (ret)
dev_err(gmu->dev, "Unable to start the HFI queues\n");
return ret;
}
/* Disable CPU control of SPTP power power collapse */
static void a6xx_sptprac_disable(struct a6xx_gmu *gmu)
{
u32 val;
int ret;
/* Make sure retention is on */
gmu_rmw(gmu, REG_A6XX_GPU_CC_GX_GDSCR, 0, (1 << 11));
gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778001);
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val,
(val & 0x04), 100, 10000);
if (ret)
DRM_DEV_ERROR(gmu->dev, "failed to power off SPTPRAC: 0x%x\n",
gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS));
}
/* Enable CPU control of SPTP power power collapse */
static int a6xx_sptprac_enable(struct a6xx_gmu *gmu)
{
int ret;
u32 val;
gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778000);
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val,
(val & 0x38) == 0x28, 1, 100);
if (ret) {
DRM_DEV_ERROR(gmu->dev, "Unable to power on SPTPRAC: 0x%x\n",
gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS));
}
return 0;
}
static irqreturn_t a6xx_hfi_irq(int irq, void *data)
{
struct a6xx_gmu *gmu = data;
u32 status;
status = gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO);
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, status);
if (status & A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ)
tasklet_schedule(&gmu->hfi_tasklet);
if (status & A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) {
dev_err_ratelimited(gmu->dev, "GMU firmware fault\n");
/* Temporary until we can recover safely */
BUG();
}
return IRQ_HANDLED;
}
static irqreturn_t a6xx_gmu_irq(int irq, void *data)
{
struct a6xx_gmu *gmu = data;
u32 status;
status = gmu_read(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_STATUS);
gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, status);
if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE) {
dev_err_ratelimited(gmu->dev, "GMU watchdog expired\n");
a6xx_gmu_fault(gmu);
}
if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_HOST_AHB_BUS_ERROR)
dev_err_ratelimited(gmu->dev, "GMU AHB bus error\n");
if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_FENCE_ERR)
dev_err_ratelimited(gmu->dev, "GMU fence error: 0x%x\n",
gmu_read(gmu, REG_A6XX_GMU_AHB_FENCE_STATUS));
return IRQ_HANDLED;
}
static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu)
{
struct platform_device *pdev = to_platform_device(gmu->dev);
void __iomem *pdcptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc");
void __iomem *seqptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc_seq");
if (!pdcptr || !seqptr)
goto err;
/* Disable SDE clock gating */
gmu_write(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0, BIT(24));
/* Setup RSC PDC handshake for sleep and wakeup */
gmu_write(gmu, REG_A6XX_RSCC_PDC_SLAVE_ID_DRV0, 1);
gmu_write(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA, 0);
gmu_write(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR, 0);
gmu_write(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 2, 0);
gmu_write(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 2, 0);
gmu_write(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 4, 0x80000000);
gmu_write(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 4, 0);
gmu_write(gmu, REG_A6XX_RSCC_OVERRIDE_START_ADDR, 0);
gmu_write(gmu, REG_A6XX_RSCC_PDC_SEQ_START_ADDR, 0x4520);
gmu_write(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_LO, 0x4510);
gmu_write(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_HI, 0x4514);
/* Load RSC sequencer uCode for sleep and wakeup */
gmu_write(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0, 0xa7a506a0);
gmu_write(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 1, 0xa1e6a6e7);
gmu_write(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 2, 0xa2e081e1);
gmu_write(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 3, 0xe9a982e2);
gmu_write(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 4, 0x0020e8a8);
/* Load PDC sequencer uCode for power up and power down sequence */
pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0, 0xfebea1e1);
pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 1, 0xa5a4a3a2);
pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 2, 0x8382a6e0);
pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 3, 0xbce3e284);
pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 4, 0x002081fc);
/* Set TCS commands used by PDC sequence for low power modes */
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_ENABLE_BANK, 7);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_WAIT_FOR_CMPL_BANK, 0);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CONTROL, 0);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID, 0x10108);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR, 0x30010);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA, 1);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 4, 0x10108);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 4, 0x30000);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 4, 0x0);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 8, 0x10108);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 8, 0x30080);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 8, 0x0);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_ENABLE_BANK, 7);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_WAIT_FOR_CMPL_BANK, 0);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CONTROL, 0);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID, 0x10108);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR, 0x30010);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA, 2);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 4, 0x10108);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 4, 0x30000);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 4, 0x3);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 8, 0x10108);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 8, 0x30080);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 8, 0x3);
/* Setup GPU PDC */
pdc_write(pdcptr, REG_A6XX_PDC_GPU_SEQ_START_ADDR, 0);
pdc_write(pdcptr, REG_A6XX_PDC_GPU_ENABLE_PDC, 0x80000001);
/* ensure no writes happen before the uCode is fully written */
wmb();
err:
if (!IS_ERR_OR_NULL(pdcptr))
iounmap(pdcptr);
if (!IS_ERR_OR_NULL(seqptr))
iounmap(seqptr);
}
int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
{
struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
struct msm_gpu *gpu = &adreno_gpu->base;
struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
int status, ret;
if (WARN(!gmu->initialized, "The GMU is not set up yet\n"))
return 0;
gmu->hung = false;
/* Turn on the resources */
pm_runtime_get_sync(gmu->dev);
/* Use a known rate to bring up the GMU */
clk_set_rate(gmu->core_clk, 200000000);
ret = clk_bulk_prepare_enable(gmu->nr_clocks, gmu->clocks);
if (ret) {
pm_runtime_put(gmu->dev);
return ret;
}
/* Set the bus quota to a reasonable value for boot */
icc_set_bw(gpu->icc_path, 0, MBps_to_icc(3072));
/* Enable the GMU interrupt */
gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0);
gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~A6XX_GMU_IRQ_MASK);
enable_irq(gmu->gmu_irq);
/* Check to see if we are doing a cold or warm boot */
status = gmu_read(gmu, REG_A6XX_GMU_GENERAL_7) == 1 ?
GMU_WARM_BOOT : GMU_COLD_BOOT;
ret = a6xx_gmu_fw_start(gmu, status);
if (ret)
goto out;
ret = a6xx_hfi_start(gmu, status);
if (ret)
goto out;
/*
* Turn on the GMU firmware fault interrupt after we know the boot
* sequence is successful
*/
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, ~0);
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~A6XX_HFI_IRQ_MASK);
enable_irq(gmu->hfi_irq);
/* Set the GPU to the highest power frequency */
__a6xx_gmu_set_freq(gmu, gmu->nr_gpu_freqs - 1);
/*
* "enable" the GX power domain which won't actually do anything but it
* will make sure that the refcounting is correct in case we need to
* bring down the GX after a GMU failure
*/
if (!IS_ERR_OR_NULL(gmu->gxpd))
pm_runtime_get(gmu->gxpd);
out:
/* On failure, shut down the GMU to leave it in a good state */
if (ret) {
disable_irq(gmu->gmu_irq);
a6xx_rpmh_stop(gmu);
pm_runtime_put(gmu->dev);
}
return ret;
}
static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state)
{
static bool rpmh_init;
struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
int i, ret;
u32 chipid;
u32 *image;
if (state == GMU_WARM_BOOT) {
ret = a6xx_rpmh_start(gmu);
if (ret)
return ret;
} else {
if (WARN(!adreno_gpu->fw[ADRENO_FW_GMU],
"GMU firmware is not loaded\n"))
return -ENOENT;
/* Sanity check the size of the firmware that was loaded */
if (adreno_gpu->fw[ADRENO_FW_GMU]->size > 0x8000) {
DRM_DEV_ERROR(gmu->dev,
"GMU firmware is bigger than the available region\n");
return -EINVAL;
}
/* Turn on register retention */
gmu_write(gmu, REG_A6XX_GMU_GENERAL_7, 1);
/* We only need to load the RPMh microcode once */
if (!rpmh_init) {
a6xx_gmu_rpmh_init(gmu);
rpmh_init = true;
} else {
ret = a6xx_rpmh_start(gmu);
if (ret)
return ret;
}
image = (u32 *) adreno_gpu->fw[ADRENO_FW_GMU]->data;
for (i = 0; i < adreno_gpu->fw[ADRENO_FW_GMU]->size >> 2; i++)
gmu_write(gmu, REG_A6XX_GMU_CM3_ITCM_START + i,
image[i]);
}
gmu_write(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, 0);
gmu_write(gmu, REG_A6XX_GMU_CM3_BOOT_CONFIG, 0x02);
/* Write the iova of the HFI table */
gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_ADDR, gmu->hfi->iova);
gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_INFO, 1);
gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_RANGE_0,
(1 << 31) | (0xa << 18) | (0xa0));
chipid = adreno_gpu->rev.core << 24;
chipid |= adreno_gpu->rev.major << 16;
chipid |= adreno_gpu->rev.minor << 12;
chipid |= adreno_gpu->rev.patchid << 8;
gmu_write(gmu, REG_A6XX_GMU_HFI_SFR_ADDR, chipid);
/* Set up the lowest idle level on the GMU */
a6xx_gmu_power_config(gmu);
ret = a6xx_gmu_start(gmu);
if (ret)
return ret;
ret = a6xx_gmu_gfx_rail_on(gmu);
if (ret)
return ret;
/* Enable SPTP_PC if the CPU is responsible for it */
if (gmu->idle_level < GMU_IDLE_STATE_SPTP) {
ret = a6xx_sptprac_enable(gmu);
if (ret)
return ret;
}
ret = a6xx_gmu_hfi_start(gmu);
if (ret)
return ret;
/* FIXME: Do we need this wmb() here? */
wmb();
return 0;
}
