[alsa-devel] [PATCH v2 0/3] ASoC: Intel: Skylake: Add DSP muti-core support

Vinod Koul

21 Jun 2016 21 Jun '16

6:47 a.m.

This series adds support for managing multiple DSP cores. SW is responsible for powering up/down cores in DSP and we do that using refcount. 1st patch introduces core infrastructure change in driver and then adds support in SKL and BXT

Changes in v2: - fix error report by kbuild bot

Jayachandran B (3): ASoC: Intel: Skylake: Add DSP muti-core infrastructure ASoC: Intel: Skylake: Support multi-core in Skylake ASoC: Intel: Skylake: Support multi-core in Broxton

sound/soc/intel/skylake/bxt-sst.c | 160 ++++++++++++++------- sound/soc/intel/skylake/skl-sst-dsp.c | 253 ++++++++++++++++++++++++---------- sound/soc/intel/skylake/skl-sst-dsp.h | 96 ++++++++----- sound/soc/intel/skylake/skl-sst-ipc.h | 11 ++ sound/soc/intel/skylake/skl-sst.c | 91 +++++++----- 5 files changed, 425 insertions(+), 186 deletions(-)

-- 1.9.1

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Vinod Koul

21 Jun 21 Jun

6:47 a.m.

New subject: [alsa-devel] [PATCH v2 1/3] ASoC: Intel: Skylake: Add DSP muti-core infrastructure

From: Jayachandran B jayachandran.b@intel.com

The DSP can have more than one cores. In that case the secondary core has to be managed by the driver. This patch adds the changes to driver infrastructure to support multiple core.

A new object skl_dsp_cores is introduced to support multiple core. Helpers skl_dsp_get_core() skl_dsp_put_core() help to managed the cores.

Many of the power_up/down and DSP APIs take additional argument of core_id. The primary core, 0 is always powered up first and then on demand second core.

Signed-off-by: Jayachandran B jayachandran.b@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/soc/intel/skylake/bxt-sst.c | 22 +-- sound/soc/intel/skylake/skl-sst-dsp.c | 253 ++++++++++++++++++++++++---------- sound/soc/intel/skylake/skl-sst-dsp.h | 96 ++++++++----- sound/soc/intel/skylake/skl-sst-ipc.h | 11 ++ sound/soc/intel/skylake/skl-sst.c | 16 ++- 5 files changed, 278 insertions(+), 120 deletions(-)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c index 9d36440c802a..c3dc1c4f1fad 100644 --- a/sound/soc/intel/skylake/bxt-sst.c +++ b/sound/soc/intel/skylake/bxt-sst.c @@ -58,7 +58,7 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, ctx->dsp_ops.stream_tag = stream_tag; memcpy(ctx->dmab.area, fwdata, fwsize);

- ret = skl_dsp_core_power_up(ctx); + ret = skl_dsp_core_power_up(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret); goto base_fw_load_failed; @@ -68,7 +68,7 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, sst_dsp_shim_write(ctx, SKL_ADSP_REG_HIPCI, SKL_ADSP_REG_HIPCI_BUSY | (BXT_IPC_PURGE_FW | ((stream_tag - 1) << 9)));

- ret = skl_dsp_start_core(ctx); + ret = skl_dsp_start_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { dev_err(ctx->dev, "Start dsp core failed ret: %d\n", ret); ret = -EIO; @@ -118,7 +118,8 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx,

base_fw_load_failed: ctx->dsp_ops.cleanup(ctx->dev, &ctx->dmab, stream_tag); - skl_dsp_disable_core(ctx); + skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1)); + skl_dsp_disable_core(ctx, SKL_DSP_CORE_MASK(1)); return ret; }

@@ -183,14 +184,14 @@ static int bxt_load_base_firmware(struct sst_dsp *ctx) sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE), sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));

- skl_dsp_disable_core(ctx); + skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); } else { dev_dbg(ctx->dev, "Firmware download successful\n"); ret = wait_event_timeout(skl->boot_wait, skl->boot_complete, msecs_to_jiffies(SKL_IPC_BOOT_MSECS)); if (ret == 0) { dev_err(ctx->dev, "DSP boot fail, FW Ready timeout\n"); - skl_dsp_disable_core(ctx); + skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); ret = -EIO; } else { skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING); @@ -204,7 +205,7 @@ sst_load_base_firmware_failed: return ret; }

-static int bxt_set_dsp_D0(struct sst_dsp *ctx) +static int bxt_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id) { struct skl_sst *skl = ctx->thread_context; int ret; @@ -219,7 +220,7 @@ static int bxt_set_dsp_D0(struct sst_dsp *ctx) return ret; }

- ret = skl_dsp_enable_core(ctx); + ret = skl_dsp_enable_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { dev_err(ctx->dev, "enable dsp core failed ret: %d\n", ret); return ret; @@ -243,7 +244,7 @@ static int bxt_set_dsp_D0(struct sst_dsp *ctx) return 0; }

-static int bxt_set_dsp_D3(struct sst_dsp *ctx) +static int bxt_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id) { struct skl_ipc_dxstate_info dx; struct skl_sst *skl = ctx->thread_context; @@ -262,7 +263,7 @@ static int bxt_set_dsp_D3(struct sst_dsp *ctx) return ret; }

- ret = skl_dsp_disable_core(ctx); + ret = skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { dev_err(ctx->dev, "disbale dsp core failed: %d\n", ret); ret = -EIO; @@ -330,6 +331,7 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq, if (ret) return ret;

+ skl->cores.count = 2; skl->boot_complete = false; init_waitqueue_head(&skl->boot_wait);

@@ -339,6 +341,8 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq, return ret; }

+ skl_dsp_init_core_state(sst); + if (dsp) *dsp = skl;

diff --git a/sound/soc/intel/skylake/skl-sst-dsp.c b/sound/soc/intel/skylake/skl-sst-dsp.c index 33c45aa53532..c3deefab65d6 100644 --- a/sound/soc/intel/skylake/skl-sst-dsp.c +++ b/sound/soc/intel/skylake/skl-sst-dsp.c @@ -34,33 +34,84 @@ void skl_dsp_set_state_locked(struct sst_dsp *ctx, int state) mutex_unlock(&ctx->mutex); }

-static int skl_dsp_core_set_reset_state(struct sst_dsp *ctx) +/* + * Initialize core power state and usage count. To be called after + * successful first boot. Hence core 0 will be running and other cores + * will be reset + */ +void skl_dsp_init_core_state(struct sst_dsp *ctx) +{ + struct skl_sst *skl = ctx->thread_context; + int i; + + skl->cores.state[SKL_DSP_CORE0_ID] = SKL_DSP_RUNNING; + skl->cores.usage_count[SKL_DSP_CORE0_ID] = 1; + + for (i = SKL_DSP_CORE0_ID + 1; i < SKL_DSP_CORES_MAX; i++) { + skl->cores.state[i] = SKL_DSP_RESET; + skl->cores.usage_count[i] = 0; + } +} + +/* Get the mask for all enabled cores */ +unsigned int skl_dsp_get_enabled_cores(struct sst_dsp *ctx) +{ + struct skl_sst *skl = ctx->thread_context; + unsigned int core_mask, en_cores_mask; + u32 val; + + core_mask = SKL_DSP_CORES_MASK(skl->cores.count); + + val = sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS); + + /* Cores having CPA bit set */ + en_cores_mask = (val & SKL_ADSPCS_CPA_MASK(core_mask)) >> + SKL_ADSPCS_CPA_SHIFT; + + /* And cores having CRST bit cleared */ + en_cores_mask &= (~val & SKL_ADSPCS_CRST_MASK(core_mask)) >> + SKL_ADSPCS_CRST_SHIFT; + + /* And cores having CSTALL bit cleared */ + en_cores_mask &= (~val & SKL_ADSPCS_CSTALL_MASK(core_mask)) >> + SKL_ADSPCS_CSTALL_SHIFT; + en_cores_mask &= core_mask; + + dev_dbg(ctx->dev, "DSP enabled cores mask = %x\n", en_cores_mask); + + return en_cores_mask; +} + +static int +skl_dsp_core_set_reset_state(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

/* update bits */ sst_dsp_shim_update_bits_unlocked(ctx, - SKL_ADSP_REG_ADSPCS, SKL_ADSPCS_CRST_MASK, - SKL_ADSPCS_CRST(SKL_DSP_CORES_MASK)); + SKL_ADSP_REG_ADSPCS, SKL_ADSPCS_CRST_MASK(core_mask), + SKL_ADSPCS_CRST_MASK(core_mask));

/* poll with timeout to check if operation successful */ ret = sst_dsp_register_poll(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CRST_MASK, - SKL_ADSPCS_CRST(SKL_DSP_CORES_MASK), + SKL_ADSPCS_CRST_MASK(core_mask), + SKL_ADSPCS_CRST_MASK(core_mask), SKL_DSP_RESET_TO, "Set reset"); if ((sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS) & - SKL_ADSPCS_CRST(SKL_DSP_CORES_MASK)) != - SKL_ADSPCS_CRST(SKL_DSP_CORES_MASK)) { - dev_err(ctx->dev, "Set reset state failed\n"); + SKL_ADSPCS_CRST_MASK(core_mask)) != + SKL_ADSPCS_CRST_MASK(core_mask)) { + dev_err(ctx->dev, "Set reset state failed: core_mask %x\n", + core_mask); ret = -EIO; }

return ret; }

-static int skl_dsp_core_unset_reset_state(struct sst_dsp *ctx) +int skl_dsp_core_unset_reset_state( + struct sst_dsp *ctx, unsigned int core_mask) { int ret;

@@ -68,151 +119,160 @@ static int skl_dsp_core_unset_reset_state(struct sst_dsp *ctx)

/* update bits */ sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CRST_MASK, 0); + SKL_ADSPCS_CRST_MASK(core_mask), 0);

/* poll with timeout to check if operation successful */ ret = sst_dsp_register_poll(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CRST_MASK, + SKL_ADSPCS_CRST_MASK(core_mask), 0, SKL_DSP_RESET_TO, "Unset reset");

if ((sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS) & - SKL_ADSPCS_CRST(SKL_DSP_CORES_MASK)) != 0) { - dev_err(ctx->dev, "Unset reset state failed\n"); + SKL_ADSPCS_CRST_MASK(core_mask)) != 0) { + dev_err(ctx->dev, "Unset reset state failed: core_mask %x\n", + core_mask); ret = -EIO; }

return ret; }

-static bool is_skl_dsp_core_enable(struct sst_dsp *ctx) +static bool +is_skl_dsp_core_enable(struct sst_dsp *ctx, unsigned int core_mask) { int val; bool is_enable;

val = sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS);

- is_enable = ((val & SKL_ADSPCS_CPA(SKL_DSP_CORES_MASK)) && - (val & SKL_ADSPCS_SPA(SKL_DSP_CORES_MASK)) && - !(val & SKL_ADSPCS_CRST(SKL_DSP_CORES_MASK)) && - !(val & SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK))); + is_enable = ((val & SKL_ADSPCS_CPA_MASK(core_mask)) && + (val & SKL_ADSPCS_SPA_MASK(core_mask)) && + !(val & SKL_ADSPCS_CRST_MASK(core_mask)) && + !(val & SKL_ADSPCS_CSTALL_MASK(core_mask))); + + dev_dbg(ctx->dev, "DSP core(s) enabled? %d : core_mask %x\n", + is_enable, core_mask);

- dev_dbg(ctx->dev, "DSP core is enabled=%d\n", is_enable); return is_enable; }

-static int skl_dsp_reset_core(struct sst_dsp *ctx) +static int skl_dsp_reset_core(struct sst_dsp *ctx, unsigned int core_mask) { /* stall core */ sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CSTALL_MASK, - SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK)); + SKL_ADSPCS_CSTALL_MASK(core_mask), + SKL_ADSPCS_CSTALL_MASK(core_mask));

/* set reset state */ - return skl_dsp_core_set_reset_state(ctx); + return skl_dsp_core_set_reset_state(ctx, core_mask); }

-int skl_dsp_start_core(struct sst_dsp *ctx) +int skl_dsp_start_core(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

/* unset reset state */ - ret = skl_dsp_core_unset_reset_state(ctx); - if (ret < 0) { - dev_dbg(ctx->dev, "dsp unset reset fails\n"); + ret = skl_dsp_core_unset_reset_state(ctx, core_mask); + if (ret < 0) return ret; - }

/* run core */ - dev_dbg(ctx->dev, "run core...\n"); + dev_dbg(ctx->dev, "unstall/run core: core_mask = %x\n", core_mask); sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CSTALL_MASK, 0); + SKL_ADSPCS_CSTALL_MASK(core_mask), 0);

- if (!is_skl_dsp_core_enable(ctx)) { - skl_dsp_reset_core(ctx); - dev_err(ctx->dev, "DSP core enable failed\n"); + if (!is_skl_dsp_core_enable(ctx, core_mask)) { + skl_dsp_reset_core(ctx, core_mask); + dev_err(ctx->dev, "DSP start core failed: core_mask %x\n", + core_mask); ret = -EIO; }

return ret; }

-int skl_dsp_core_power_up(struct sst_dsp *ctx) +int skl_dsp_core_power_up(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

/* update bits */ sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_SPA_MASK, SKL_ADSPCS_SPA(SKL_DSP_CORES_MASK)); + SKL_ADSPCS_SPA_MASK(core_mask), + SKL_ADSPCS_SPA_MASK(core_mask));

/* poll with timeout to check if operation successful */ ret = sst_dsp_register_poll(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CPA_MASK, - SKL_ADSPCS_CPA(SKL_DSP_CORES_MASK), + SKL_ADSPCS_CPA_MASK(core_mask), + SKL_ADSPCS_CPA_MASK(core_mask), SKL_DSP_PU_TO, "Power up");

if ((sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS) & - SKL_ADSPCS_CPA(SKL_DSP_CORES_MASK)) != - SKL_ADSPCS_CPA(SKL_DSP_CORES_MASK)) { - dev_err(ctx->dev, "DSP core power up failed\n"); + SKL_ADSPCS_CPA_MASK(core_mask)) != + SKL_ADSPCS_CPA_MASK(core_mask)) { + dev_err(ctx->dev, "DSP core power up failed: core_mask %x\n", + core_mask); ret = -EIO; }

return ret; }

-static int skl_dsp_core_power_down(struct sst_dsp *ctx) +int skl_dsp_core_power_down(struct sst_dsp *ctx, unsigned int core_mask) { /* update bits */ sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_SPA_MASK, 0); + SKL_ADSPCS_SPA_MASK(core_mask), 0);

/* poll with timeout to check if operation successful */ return sst_dsp_register_poll(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CPA_MASK, + SKL_ADSPCS_CPA_MASK(core_mask), 0, SKL_DSP_PD_TO, "Power down"); }

-int skl_dsp_enable_core(struct sst_dsp *ctx) +int skl_dsp_enable_core(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

/* power up */ - ret = skl_dsp_core_power_up(ctx); + ret = skl_dsp_core_power_up(ctx, core_mask); if (ret < 0) { - dev_dbg(ctx->dev, "dsp core power up failed\n"); + dev_err(ctx->dev, "dsp core power up failed: core_mask %x\n", + core_mask); return ret; }

- return skl_dsp_start_core(ctx); + return skl_dsp_start_core(ctx, core_mask); }

-int skl_dsp_disable_core(struct sst_dsp *ctx) +int skl_dsp_disable_core(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

- ret = skl_dsp_reset_core(ctx); + ret = skl_dsp_reset_core(ctx, core_mask); if (ret < 0) { - dev_err(ctx->dev, "dsp core reset failed\n"); + dev_err(ctx->dev, "dsp core reset failed: core_mask %x\n", + core_mask); return ret; }

/* power down core*/ - ret = skl_dsp_core_power_down(ctx); + ret = skl_dsp_core_power_down(ctx, core_mask); if (ret < 0) { - dev_err(ctx->dev, "dsp core power down failed\n"); + dev_err(ctx->dev, "dsp core power down fail mask %x: %d\n", + core_mask, ret); return ret; }

- if (is_skl_dsp_core_enable(ctx)) { - dev_err(ctx->dev, "DSP core disable failed\n"); + if (is_skl_dsp_core_enable(ctx, core_mask)) { + dev_err(ctx->dev, "dsp core disable fail mask %x: %d\n", + core_mask, ret); ret = -EIO; }

@@ -223,28 +283,25 @@ int skl_dsp_boot(struct sst_dsp *ctx) { int ret;

- if (is_skl_dsp_core_enable(ctx)) { - dev_dbg(ctx->dev, "dsp core is already enabled, so reset the dap core\n"); - ret = skl_dsp_reset_core(ctx); + if (is_skl_dsp_core_enable(ctx, SKL_DSP_CORE0_MASK)) { + ret = skl_dsp_reset_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { - dev_err(ctx->dev, "dsp reset failed\n"); + dev_err(ctx->dev, "dsp core0 reset fail: %d\n", ret); return ret; }

- ret = skl_dsp_start_core(ctx); + ret = skl_dsp_start_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { - dev_err(ctx->dev, "dsp start failed\n"); + dev_err(ctx->dev, "dsp core0 start fail: %d\n", ret); return ret; } } else { - dev_dbg(ctx->dev, "disable and enable to make sure DSP is invalid state\n"); - ret = skl_dsp_disable_core(ctx); - + ret = skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { - dev_err(ctx->dev, "dsp disable core failes\n"); + dev_err(ctx->dev, "dsp core0 disable fail: %d\n", ret); return ret; } - ret = skl_dsp_enable_core(ctx); + ret = skl_dsp_enable_core(ctx, SKL_DSP_CORE0_MASK); }

return ret; @@ -280,16 +337,74 @@ irqreturn_t skl_dsp_sst_interrupt(int irq, void *dev_id)

return result; } +/* + * skl_dsp_get_core/skl_dsp_put_core will be called inside DAPM context + * within the dapm mutex. Hence no separate lock is used. + */ +int skl_dsp_get_core(struct sst_dsp *ctx, unsigned int core_id) +{ + struct skl_sst *skl = ctx->thread_context; + int ret = 0; + + if (core_id >= skl->cores.count) { + dev_err(ctx->dev, "invalid core id: %d\n", core_id); + return -EINVAL; + } + + if (skl->cores.state[core_id] == SKL_DSP_RESET) { + ret = ctx->fw_ops.set_state_D0(ctx, core_id); + if (ret < 0) { + dev_err(ctx->dev, "unable to get core%d\n", core_id); + return ret; + } + } + + skl->cores.usage_count[core_id]++; + + dev_dbg(ctx->dev, "core id %d state %d usage_count %d\n", + core_id, skl->cores.state[core_id], + skl->cores.usage_count[core_id]); + + return ret; +} +EXPORT_SYMBOL_GPL(skl_dsp_get_core); + +int skl_dsp_put_core(struct sst_dsp *ctx, unsigned int core_id) +{ + struct skl_sst *skl = ctx->thread_context; + int ret = 0; + + if (core_id >= skl->cores.count) { + dev_err(ctx->dev, "invalid core id: %d\n", core_id); + return -EINVAL; + } + + if (--skl->cores.usage_count[core_id] == 0) { + ret = ctx->fw_ops.set_state_D3(ctx, core_id); + if (ret < 0) { + dev_err(ctx->dev, "unable to put core %d: %d\n", + core_id, ret); + skl->cores.usage_count[core_id]++; + } + } + + dev_dbg(ctx->dev, "core id %d state %d usage_count %d\n", + core_id, skl->cores.state[core_id], + skl->cores.usage_count[core_id]); + + return ret; +} +EXPORT_SYMBOL_GPL(skl_dsp_put_core);

int skl_dsp_wake(struct sst_dsp *ctx) { - return ctx->fw_ops.set_state_D0(ctx); + return skl_dsp_get_core(ctx, SKL_DSP_CORE0_ID); } EXPORT_SYMBOL_GPL(skl_dsp_wake);

int skl_dsp_sleep(struct sst_dsp *ctx) { - return ctx->fw_ops.set_state_D3(ctx); + return skl_dsp_put_core(ctx, SKL_DSP_CORE0_ID); } EXPORT_SYMBOL_GPL(skl_dsp_sleep);

@@ -336,9 +451,7 @@ void skl_dsp_free(struct sst_dsp *dsp)

free_irq(dsp->irq, dsp); skl_ipc_op_int_disable(dsp); - skl_ipc_int_disable(dsp); - - skl_dsp_disable_core(dsp); + skl_dsp_disable_core(dsp, SKL_DSP_CORE0_MASK); } EXPORT_SYMBOL_GPL(skl_dsp_free);

diff --git a/sound/soc/intel/skylake/skl-sst-dsp.h b/sound/soc/intel/skylake/skl-sst-dsp.h index 22fbe1075cb5..0f8629ef79ac 100644 --- a/sound/soc/intel/skylake/skl-sst-dsp.h +++ b/sound/soc/intel/skylake/skl-sst-dsp.h @@ -77,35 +77,53 @@ struct sst_dsp_device; #define SKL_ADSPIC_IPC 1 #define SKL_ADSPIS_IPC 1

+/* Core ID of core0 */ +#define SKL_DSP_CORE0_ID 0 + +/* Mask for a given core index, c = 0.. number of supported cores - 1 */ +#define SKL_DSP_CORE_MASK(c) BIT(c) + +/* + * Core 0 mask = SKL_DSP_CORE_MASK(0); Defined separately + * since Core0 is primary core and it is used often + */ +#define SKL_DSP_CORE0_MASK BIT(0) + +/* + * Mask for a given number of cores + * nc = number of supported cores + */ +#define SKL_DSP_CORES_MASK(nc) GENMASK((nc - 1), 0) + /* ADSPCS - Audio DSP Control & Status */ -#define SKL_DSP_CORES 1 -#define SKL_DSP_CORE0_MASK 1 -#define SKL_DSP_CORES_MASK ((1 << SKL_DSP_CORES) - 1) - -/* Core Reset - asserted high */ -#define SKL_ADSPCS_CRST_SHIFT 0 -#define SKL_ADSPCS_CRST_MASK (SKL_DSP_CORES_MASK << SKL_ADSPCS_CRST_SHIFT) -#define SKL_ADSPCS_CRST(x) ((x << SKL_ADSPCS_CRST_SHIFT) & SKL_ADSPCS_CRST_MASK) - -/* Core run/stall - when set to '1' core is stalled */ -#define SKL_ADSPCS_CSTALL_SHIFT 8 -#define SKL_ADSPCS_CSTALL_MASK (SKL_DSP_CORES_MASK << \ - SKL_ADSPCS_CSTALL_SHIFT) -#define SKL_ADSPCS_CSTALL(x) ((x << SKL_ADSPCS_CSTALL_SHIFT) & \ - SKL_ADSPCS_CSTALL_MASK) - -/* Set Power Active - when set to '1' turn cores on */ -#define SKL_ADSPCS_SPA_SHIFT 16 -#define SKL_ADSPCS_SPA_MASK (SKL_DSP_CORES_MASK << SKL_ADSPCS_SPA_SHIFT) -#define SKL_ADSPCS_SPA(x) ((x << SKL_ADSPCS_SPA_SHIFT) & SKL_ADSPCS_SPA_MASK) - -/* Current Power Active - power status of cores, set by hardware */ -#define SKL_ADSPCS_CPA_SHIFT 24 -#define SKL_ADSPCS_CPA_MASK (SKL_DSP_CORES_MASK << SKL_ADSPCS_CPA_SHIFT) -#define SKL_ADSPCS_CPA(x) ((x << SKL_ADSPCS_CPA_SHIFT) & SKL_ADSPCS_CPA_MASK) - -#define SST_DSP_POWER_D0 0x0 /* full On */ -#define SST_DSP_POWER_D3 0x3 /* Off */ + +/* + * Core Reset - asserted high + * CRST Mask for a given core mask pattern, cm + */ +#define SKL_ADSPCS_CRST_SHIFT 0 +#define SKL_ADSPCS_CRST_MASK(cm) ((cm) << SKL_ADSPCS_CRST_SHIFT) + +/* + * Core run/stall - when set to '1' core is stalled + * CSTALL Mask for a given core mask pattern, cm + */ +#define SKL_ADSPCS_CSTALL_SHIFT 8 +#define SKL_ADSPCS_CSTALL_MASK(cm) ((cm) << SKL_ADSPCS_CSTALL_SHIFT) + +/* + * Set Power Active - when set to '1' turn cores on + * SPA Mask for a given core mask pattern, cm + */ +#define SKL_ADSPCS_SPA_SHIFT 16 +#define SKL_ADSPCS_SPA_MASK(cm) ((cm) << SKL_ADSPCS_SPA_SHIFT) + +/* + * Current Power Active - power status of cores, set by hardware + * CPA Mask for a given core mask pattern, cm + */ +#define SKL_ADSPCS_CPA_SHIFT 24 +#define SKL_ADSPCS_CPA_MASK(cm) ((cm) << SKL_ADSPCS_CPA_SHIFT)

enum skl_dsp_states { SKL_DSP_RUNNING = 1, @@ -116,8 +134,8 @@ struct skl_dsp_fw_ops { int (*load_fw)(struct sst_dsp *ctx); /* FW module parser/loader */ int (*parse_fw)(struct sst_dsp *ctx); - int (*set_state_D0)(struct sst_dsp *ctx); - int (*set_state_D3)(struct sst_dsp *ctx); + int (*set_state_D0)(struct sst_dsp *ctx, unsigned int core_id); + int (*set_state_D3)(struct sst_dsp *ctx, unsigned int core_id); unsigned int (*get_fw_errcode)(struct sst_dsp *ctx); int (*load_mod)(struct sst_dsp *ctx, u16 mod_id, u8 *mod_name); int (*unload_mod)(struct sst_dsp *ctx, u16 mod_id); @@ -158,14 +176,26 @@ int skl_cldma_prepare(struct sst_dsp *ctx); void skl_dsp_set_state_locked(struct sst_dsp *ctx, int state); struct sst_dsp *skl_dsp_ctx_init(struct device *dev, struct sst_dsp_device *sst_dev, int irq); -int skl_dsp_enable_core(struct sst_dsp *ctx); -int skl_dsp_disable_core(struct sst_dsp *ctx); bool is_skl_dsp_running(struct sst_dsp *ctx); + +unsigned int skl_dsp_get_enabled_cores(struct sst_dsp *ctx); +void skl_dsp_init_core_state(struct sst_dsp *ctx); +int skl_dsp_enable_core(struct sst_dsp *ctx, unsigned int core_mask); +int skl_dsp_disable_core(struct sst_dsp *ctx, unsigned int core_mask); +int skl_dsp_core_power_up(struct sst_dsp *ctx, unsigned int core_mask); +int skl_dsp_core_power_down(struct sst_dsp *ctx, unsigned int core_mask); +int skl_dsp_core_unset_reset_state(struct sst_dsp *ctx, + unsigned int core_mask); +int skl_dsp_start_core(struct sst_dsp *ctx, unsigned int core_mask); + irqreturn_t skl_dsp_sst_interrupt(int irq, void *dev_id); int skl_dsp_wake(struct sst_dsp *ctx); int skl_dsp_sleep(struct sst_dsp *ctx); void skl_dsp_free(struct sst_dsp *dsp);

+int skl_dsp_get_core(struct sst_dsp *ctx, unsigned int core_id); +int skl_dsp_put_core(struct sst_dsp *ctx, unsigned int core_id); + int skl_dsp_boot(struct sst_dsp *ctx); int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq, const char *fw_name, struct skl_dsp_loader_ops dsp_ops, @@ -182,7 +212,5 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, unsigned int offset); void skl_freeup_uuid_list(struct skl_sst *ctx);

int skl_dsp_strip_extended_manifest(struct firmware *fw); -int skl_dsp_start_core(struct sst_dsp *ctx); -int skl_dsp_core_power_up(struct sst_dsp *ctx);

#endif /*__SKL_SST_DSP_H__*/ diff --git a/sound/soc/intel/skylake/skl-sst-ipc.h b/sound/soc/intel/skylake/skl-sst-ipc.h index 5102c7b415fe..2e3d4e80ef97 100644 --- a/sound/soc/intel/skylake/skl-sst-ipc.h +++ b/sound/soc/intel/skylake/skl-sst-ipc.h @@ -45,6 +45,14 @@ struct skl_ipc_header { u32 extension; };

+#define SKL_DSP_CORES_MAX 2 + +struct skl_dsp_cores { + unsigned int count; + enum skl_dsp_states state[SKL_DSP_CORES_MAX]; + int usage_count[SKL_DSP_CORES_MAX]; +}; + struct skl_sst { struct device *dev; struct sst_dsp *dsp; @@ -66,6 +74,9 @@ struct skl_sst {

/* Is firmware loaded */ bool fw_loaded; + + /* multi-core */ + struct skl_dsp_cores cores; };

struct skl_ipc_init_instance_msg { diff --git a/sound/soc/intel/skylake/skl-sst.c b/sound/soc/intel/skylake/skl-sst.c index eaf0c9d19782..ecaca94d2a96 100644 --- a/sound/soc/intel/skylake/skl-sst.c +++ b/sound/soc/intel/skylake/skl-sst.c @@ -84,10 +84,8 @@ static int skl_load_base_firmware(struct sst_dsp *ctx) ret = request_firmware(&ctx->fw, ctx->fw_name, ctx->dev); if (ret < 0) { dev_err(ctx->dev, "Request firmware failed %d\n", ret); - skl_dsp_disable_core(ctx); return -EIO; } - }

ret = snd_skl_parse_uuids(ctx, SKL_ADSP_FW_BIN_HDR_OFFSET); @@ -95,7 +93,7 @@ static int skl_load_base_firmware(struct sst_dsp *ctx) dev_err(ctx->dev, "UUID parsing err: %d\n", ret); release_firmware(ctx->fw); - skl_dsp_disable_core(ctx); + skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); return ret; }

@@ -159,13 +157,13 @@ static int skl_load_base_firmware(struct sst_dsp *ctx) transfer_firmware_failed: ctx->cl_dev.ops.cl_cleanup_controller(ctx); skl_load_base_firmware_failed: - skl_dsp_disable_core(ctx); + skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); release_firmware(ctx->fw); ctx->fw = NULL; return ret; }

-static int skl_set_dsp_D0(struct sst_dsp *ctx) +static int skl_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id) { int ret;

@@ -180,7 +178,7 @@ static int skl_set_dsp_D0(struct sst_dsp *ctx) return ret; }

-static int skl_set_dsp_D3(struct sst_dsp *ctx) +static int skl_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id) { int ret; struct skl_ipc_dxstate_info dx; @@ -207,7 +205,7 @@ static int skl_set_dsp_D3(struct sst_dsp *ctx) skl_ipc_op_int_disable(ctx); skl_ipc_int_disable(ctx);

- ret = skl_dsp_disable_core(ctx); + ret = skl_dsp_disable_core(ctx, core_id); if (ret < 0) { dev_err(ctx->dev, "disable dsp core failed ret: %d\n", ret); ret = -EIO; @@ -466,12 +464,16 @@ int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq, if (ret) return ret;

+ skl->cores.count = 2; + ret = sst->fw_ops.load_fw(sst); if (ret < 0) { dev_err(dev, "Load base fw failed : %d", ret); goto cleanup; }

+ skl_dsp_init_core_state(sst); + if (dsp) *dsp = skl;

-- 1.9.1

Mark Brown

22 Jun 22 Jun

5:28 p.m.

New subject: [alsa-devel] Applied "ASoC: Intel: Skylake: Add DSP muti-core infrastructure" to the asoc tree

The patch

ASoC: Intel: Skylake: Add DSP muti-core infrastructure

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

...

From 052f103c89aa8ff6a72a4cadc0a5471cc8bc4c93 Mon Sep 17 00:00:00 2001

From: Jayachandran B jayachandran.b@intel.com Date: Tue, 21 Jun 2016 10:17:41 +0530 Subject: [PATCH] ASoC: Intel: Skylake: Add DSP muti-core infrastructure

The DSP can have more than one cores. In that case the secondary core has to be managed by the driver. This patch adds the changes to driver infrastructure to support multiple core.

A new object skl_dsp_cores is introduced to support multiple core. Helpers skl_dsp_get_core() skl_dsp_put_core() help to managed the cores.

Many of the power_up/down and DSP APIs take additional argument of core_id. The primary core, 0 is always powered up first and then on demand second core.

Signed-off-by: Jayachandran B jayachandran.b@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/intel/skylake/bxt-sst.c | 22 +-- sound/soc/intel/skylake/skl-sst-dsp.c | 253 ++++++++++++++++++++++++---------- sound/soc/intel/skylake/skl-sst-dsp.h | 96 ++++++++----- sound/soc/intel/skylake/skl-sst-ipc.h | 11 ++ sound/soc/intel/skylake/skl-sst.c | 16 ++- 5 files changed, 278 insertions(+), 120 deletions(-)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c index 622da5d3e3b3..c6cc1cfd04c8 100644 --- a/sound/soc/intel/skylake/bxt-sst.c +++ b/sound/soc/intel/skylake/bxt-sst.c @@ -58,7 +58,7 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, ctx->dsp_ops.stream_tag = stream_tag; memcpy(ctx->dmab.area, fwdata, fwsize);

@@ -183,14 +184,14 @@ static int bxt_load_base_firmware(struct sst_dsp *ctx) sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE), sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));

- ret = skl_dsp_disable_core(ctx); + ret = skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { dev_err(ctx->dev, "disbale dsp core failed: %d\n", ret); ret = -EIO; @@ -329,6 +330,7 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq, if (ret) return ret;

+ skl->cores.count = 2; skl->boot_complete = false; init_waitqueue_head(&skl->boot_wait);

@@ -338,6 +340,8 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq, return ret; }

+ skl_dsp_init_core_state(sst); + if (dsp) *dsp = skl;

return ret; }

-static int skl_dsp_core_unset_reset_state(struct sst_dsp *ctx) +int skl_dsp_core_unset_reset_state( + struct sst_dsp *ctx, unsigned int core_mask) { int ret;

@@ -68,151 +119,160 @@ static int skl_dsp_core_unset_reset_state(struct sst_dsp *ctx)

/* update bits */ sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS, - SKL_ADSPCS_CRST_MASK, 0); + SKL_ADSPCS_CRST_MASK(core_mask), 0);

return ret; }

-static bool is_skl_dsp_core_enable(struct sst_dsp *ctx) +static bool +is_skl_dsp_core_enable(struct sst_dsp *ctx, unsigned int core_mask) { int val; bool is_enable;

val = sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS);

- dev_dbg(ctx->dev, "DSP core is enabled=%d\n", is_enable); return is_enable; }

/* set reset state */ - return skl_dsp_core_set_reset_state(ctx); + return skl_dsp_core_set_reset_state(ctx, core_mask); }

-int skl_dsp_start_core(struct sst_dsp *ctx) +int skl_dsp_start_core(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

return ret; }

-int skl_dsp_core_power_up(struct sst_dsp *ctx) +int skl_dsp_core_power_up(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

return ret; }

-int skl_dsp_enable_core(struct sst_dsp *ctx) +int skl_dsp_enable_core(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

- return skl_dsp_start_core(ctx); + return skl_dsp_start_core(ctx, core_mask); }

-int skl_dsp_disable_core(struct sst_dsp *ctx) +int skl_dsp_disable_core(struct sst_dsp *ctx, unsigned int core_mask) { int ret;

@@ -223,28 +283,25 @@ int skl_dsp_boot(struct sst_dsp *ctx) { int ret;

return ret; @@ -280,16 +337,74 @@ irqreturn_t skl_dsp_sst_interrupt(int irq, void *dev_id)

int skl_dsp_wake(struct sst_dsp *ctx) { - return ctx->fw_ops.set_state_D0(ctx); + return skl_dsp_get_core(ctx, SKL_DSP_CORE0_ID); } EXPORT_SYMBOL_GPL(skl_dsp_wake);

int skl_dsp_sleep(struct sst_dsp *ctx) { - return ctx->fw_ops.set_state_D3(ctx); + return skl_dsp_put_core(ctx, SKL_DSP_CORE0_ID); } EXPORT_SYMBOL_GPL(skl_dsp_sleep);

@@ -336,9 +451,7 @@ void skl_dsp_free(struct sst_dsp *dsp)

free_irq(dsp->irq, dsp); skl_ipc_op_int_disable(dsp); - skl_ipc_int_disable(dsp); - - skl_dsp_disable_core(dsp); + skl_dsp_disable_core(dsp, SKL_DSP_CORE0_MASK); } EXPORT_SYMBOL_GPL(skl_dsp_free);

int skl_dsp_strip_extended_manifest(struct firmware *fw); -int skl_dsp_start_core(struct sst_dsp *ctx); -int skl_dsp_core_power_up(struct sst_dsp *ctx);

/* Is firmware loaded */ bool fw_loaded; + + /* multi-core */ + struct skl_dsp_cores cores; };

-static int skl_set_dsp_D0(struct sst_dsp *ctx) +static int skl_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id) { int ret;

@@ -180,7 +178,7 @@ static int skl_set_dsp_D0(struct sst_dsp *ctx) return ret; }

+ skl->cores.count = 2; + ret = sst->fw_ops.load_fw(sst); if (ret < 0) { dev_err(dev, "Load base fw failed : %d", ret); goto cleanup; }

+ skl_dsp_init_core_state(sst); + if (dsp) *dsp = skl;

-- 2.8.1

Vinod Koul

21 Jun 21 Jun

6:47 a.m.

New subject: [alsa-devel] [PATCH v2 2/3] ASoC: Intel: Skylake: Support multi-core in Skylake

From: Jayachandran B jayachandran.b@intel.com

Add multicore DSP support in Skylake DSP operations.

Signed-off-by: Jayachandran B jayachandran.b@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/soc/intel/skylake/skl-sst.c | 77 ++++++++++++++++++++++++--------------- 1 file changed, 48 insertions(+), 29 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-sst.c b/sound/soc/intel/skylake/skl-sst.c index ecaca94d2a96..588f899ceb65 100644 --- a/sound/soc/intel/skylake/skl-sst.c +++ b/sound/soc/intel/skylake/skl-sst.c @@ -150,7 +150,6 @@ static int skl_load_base_firmware(struct sst_dsp *ctx) }

dev_dbg(ctx->dev, "Download firmware successful%d\n", ret); - skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING); skl->fw_loaded = true; } return 0; @@ -166,14 +165,41 @@ skl_load_base_firmware_failed: static int skl_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id) { int ret; + struct skl_ipc_dxstate_info dx; + struct skl_sst *skl = ctx->thread_context; + unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);

- ret = skl_load_base_firmware(ctx); - if (ret < 0) { - dev_err(ctx->dev, "unable to load firmware\n"); - return ret; + /* If core0 is being turned on, we need to load the FW */ + if (core_id == SKL_DSP_CORE0_ID) { + ret = skl_load_base_firmware(ctx); + if (ret < 0) { + dev_err(ctx->dev, "unable to load firmware\n"); + return ret; + } + } + + /* + * If any core other than core 0 is being moved to D0, enable the + * core and send the set dx IPC for the core. + */ + if (core_id != SKL_DSP_CORE0_ID) { + ret = skl_dsp_enable_core(ctx, core_mask); + if (ret < 0) + return ret; + + dx.core_mask = core_mask; + dx.dx_mask = core_mask; + + ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID, + SKL_BASE_FW_MODULE_ID, &dx); + if (ret < 0) { + dev_err(ctx->dev, "Failed to set dsp to D0:core id= %d\n", + core_id); + skl_dsp_disable_core(ctx, core_mask); + } }

- skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING); + skl->cores.state[core_id] = SKL_DSP_RUNNING;

return ret; } @@ -183,35 +209,28 @@ static int skl_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id) int ret; struct skl_ipc_dxstate_info dx; struct skl_sst *skl = ctx->thread_context; + unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);

- dev_dbg(ctx->dev, "In %s:\n", __func__); - mutex_lock(&ctx->mutex); - if (!is_skl_dsp_running(ctx)) { - mutex_unlock(&ctx->mutex); - return 0; - } - mutex_unlock(&ctx->mutex); - - dx.core_mask = SKL_DSP_CORE0_MASK; + dx.core_mask = core_mask; dx.dx_mask = SKL_IPC_D3_MASK; + ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID, SKL_BASE_FW_MODULE_ID, &dx); if (ret < 0) - dev_err(ctx->dev, - "D3 request to FW failed, continuing reset: %d", ret); - - /* disable Interrupt */ - ctx->cl_dev.ops.cl_cleanup_controller(ctx); - skl_cldma_int_disable(ctx); - skl_ipc_op_int_disable(ctx); - skl_ipc_int_disable(ctx); - - ret = skl_dsp_disable_core(ctx, core_id); - if (ret < 0) { - dev_err(ctx->dev, "disable dsp core failed ret: %d\n", ret); - ret = -EIO; + dev_err(ctx->dev, "set Dx core %d fail: %d\n", core_id, ret); + + if (core_id == SKL_DSP_CORE0_ID) { + /* disable Interrupt */ + ctx->cl_dev.ops.cl_cleanup_controller(ctx); + skl_cldma_int_disable(ctx); + skl_ipc_op_int_disable(ctx); + skl_ipc_int_disable(ctx); } - skl_dsp_set_state_locked(ctx, SKL_DSP_RESET);

+ ret = skl_dsp_disable_core(ctx, core_mask); + if (ret < 0) + return ret; + + skl->cores.state[core_id] = SKL_DSP_RESET; return ret; }

-- 1.9.1

Vinod Koul

6:47 a.m.

New subject: [alsa-devel] [PATCH v2 3/3] ASoC: Intel: Skylake: Support multi-core in Broxton

From: Jayachandran B jayachandran.b@intel.com

Add multicore DSP support in Broxton DSP operations.

Signed-off-by: Jayachandran B jayachandran.b@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/soc/intel/skylake/bxt-sst.c | 144 +++++++++++++++++++++++++++----------- 1 file changed, 103 insertions(+), 41 deletions(-)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c index c3dc1c4f1fad..f53868956f39 100644 --- a/sound/soc/intel/skylake/bxt-sst.c +++ b/sound/soc/intel/skylake/bxt-sst.c @@ -37,11 +37,19 @@

#define BXT_ADSP_SRAM1_BASE 0xA0000

+#define BXT_INSTANCE_ID 0 +#define BXT_BASE_FW_MODULE_ID 0 + static unsigned int bxt_get_errorcode(struct sst_dsp *ctx) { return sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE); }

+/* + * First boot sequence has some extra steps. Core 0 waits for power + * status on core 1, so power up core 1 also momentarily, keep it in + * reset/stall and then turn it off + */ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, const void *fwdata, u32 fwsize) { @@ -49,7 +57,7 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, u32 reg;

stream_tag = ctx->dsp_ops.prepare(ctx->dev, 0x40, fwsize, &ctx->dmab); - if (stream_tag < 0) { + if (stream_tag <= 0) { dev_err(ctx->dev, "Failed to prepare DMA FW loading err: %x\n", stream_tag); return stream_tag; @@ -58,16 +66,19 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, ctx->dsp_ops.stream_tag = stream_tag; memcpy(ctx->dmab.area, fwdata, fwsize);

- ret = skl_dsp_core_power_up(ctx, SKL_DSP_CORE0_MASK); + /* Step 1: Power up core 0 and core1 */ + ret = skl_dsp_core_power_up(ctx, SKL_DSP_CORE0_MASK | + SKL_DSP_CORE_MASK(1)); if (ret < 0) { - dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret); + dev_err(ctx->dev, "dsp core0/1 power up failed\n"); goto base_fw_load_failed; }

- /* Purge FW request */ + /* Step 2: Purge FW request */ sst_dsp_shim_write(ctx, SKL_ADSP_REG_HIPCI, SKL_ADSP_REG_HIPCI_BUSY | (BXT_IPC_PURGE_FW | ((stream_tag - 1) << 9)));

+ /* Step 3: Unset core0 reset state & unstall/run core0 */ ret = skl_dsp_start_core(ctx, SKL_DSP_CORE0_MASK); if (ret < 0) { dev_err(ctx->dev, "Start dsp core failed ret: %d\n", ret); @@ -75,6 +86,7 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, goto base_fw_load_failed; }

+ /* Step 4: Wait for DONE Bit */ for (i = BXT_INIT_TIMEOUT; i > 0; --i) { reg = sst_dsp_shim_read(ctx, SKL_ADSP_REG_HIPCIE);

@@ -94,10 +106,18 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx, SKL_ADSP_REG_HIPCIE_DONE); }

- /* enable Interrupt */ + /* Step 5: power down core1 */ + ret = skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1)); + if (ret < 0) { + dev_err(ctx->dev, "dsp core1 power down failed\n"); + goto base_fw_load_failed; + } + + /* Step 6: Enable Interrupt */ skl_ipc_int_enable(ctx); skl_ipc_op_int_enable(ctx);

+ /* Step 7: Wait for ROM init */ for (i = BXT_INIT_TIMEOUT; i > 0; --i) { if (SKL_FW_INIT == (sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS) & @@ -194,7 +214,6 @@ static int bxt_load_base_firmware(struct sst_dsp *ctx) skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); ret = -EIO; } else { - skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING); ret = 0; skl->fw_loaded = true; } @@ -209,67 +228,110 @@ static int bxt_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id) { struct skl_sst *skl = ctx->thread_context; int ret; - - skl->boot_complete = false; + struct skl_ipc_dxstate_info dx; + unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);

if (skl->fw_loaded == false) { - dev_dbg(ctx->dev, "Re-loading fw\n"); ret = bxt_load_base_firmware(ctx); if (ret < 0) dev_err(ctx->dev, "reload fw failed: %d\n", ret); return ret; }

- ret = skl_dsp_enable_core(ctx, SKL_DSP_CORE0_MASK); - if (ret < 0) { - dev_err(ctx->dev, "enable dsp core failed ret: %d\n", ret); - return ret; + /* If core 0 is being turned on, turn on core 1 as well */ + if (core_id == SKL_DSP_CORE0_ID) + ret = skl_dsp_core_power_up(ctx, core_mask | + SKL_DSP_CORE_MASK(1)); + else + ret = skl_dsp_core_power_up(ctx, core_mask); + + if (ret < 0) + goto err; + + if (core_id == SKL_DSP_CORE0_ID) { + + /* + * Enable interrupt after SPA is set and before + * DSP is unstalled + */ + skl_ipc_int_enable(ctx); + skl_ipc_op_int_enable(ctx); + skl->boot_complete = false; }

- /* enable interrupt */ - skl_ipc_int_enable(ctx); - skl_ipc_op_int_enable(ctx); + ret = skl_dsp_start_core(ctx, core_mask); + if (ret < 0) + goto err;

- ret = wait_event_timeout(skl->boot_wait, skl->boot_complete, - msecs_to_jiffies(SKL_IPC_BOOT_MSECS)); - if (ret == 0) { - dev_err(ctx->dev, "ipc: error DSP boot timeout\n"); - dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n", - sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE), - sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS)); - return -EIO; + if (core_id == SKL_DSP_CORE0_ID) { + ret = wait_event_timeout(skl->boot_wait, + skl->boot_complete, + msecs_to_jiffies(SKL_IPC_BOOT_MSECS)); + + /* If core 1 was turned on for booting core 0, turn it off */ + skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1)); + if (ret == 0) { + dev_err(ctx->dev, "%s: DSP boot timeout\n", __func__); + dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n", + sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE), + sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS)); + dev_err(ctx->dev, "Failed to set core0 to D0 state\n"); + ret = -EIO; + goto err; + } + } + + /* Tell FW if additional core in now On */ + + if (core_id != SKL_DSP_CORE0_ID) { + dx.core_mask = core_mask; + dx.dx_mask = core_mask; + + ret = skl_ipc_set_dx(&skl->ipc, BXT_INSTANCE_ID, + BXT_BASE_FW_MODULE_ID, &dx); + if (ret < 0) { + dev_err(ctx->dev, "IPC set_dx for core %d fail: %d\n", + core_id, ret); + goto err; + } }

- skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING); + skl->cores.state[core_id] = SKL_DSP_RUNNING; return 0; +err: + if (core_id == SKL_DSP_CORE0_ID) + core_mask |= SKL_DSP_CORE_MASK(1); + skl_dsp_disable_core(ctx, core_mask); + + return ret; }

static int bxt_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id) { + int ret; struct skl_ipc_dxstate_info dx; struct skl_sst *skl = ctx->thread_context; - int ret = 0; - - if (!is_skl_dsp_running(ctx)) - return ret; + unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);

- dx.core_mask = SKL_DSP_CORE0_MASK; + dx.core_mask = core_mask; dx.dx_mask = SKL_IPC_D3_MASK;

- ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID, - SKL_BASE_FW_MODULE_ID, &dx); - if (ret < 0) { - dev_err(ctx->dev, "Failed to set DSP to D3 state: %d\n", ret); - return ret; - } + dev_dbg(ctx->dev, "core mask=%x dx_mask=%x\n", + dx.core_mask, dx.dx_mask);

- ret = skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK); + ret = skl_ipc_set_dx(&skl->ipc, BXT_INSTANCE_ID, + BXT_BASE_FW_MODULE_ID, &dx); + if (ret < 0) + dev_err(ctx->dev, + "Failed to set DSP to D3:core id = %d;Continue reset\n", + core_id); + + ret = skl_dsp_disable_core(ctx, core_mask); if (ret < 0) { - dev_err(ctx->dev, "disbale dsp core failed: %d\n", ret); - ret = -EIO; + dev_err(ctx->dev, "Failed to disable core %d", ret); + return ret; } - - skl_dsp_set_state_locked(ctx, SKL_DSP_RESET); + skl->cores.state[core_id] = SKL_DSP_RESET; return 0; }

-- 1.9.1

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Mark Brown
Vinod Koul