Thanks! My comments are inline. Xi On 12/20/2024 3:52 AM, Ilpo Järvinen wrote:
On Thu, 19 Dec 2024, Xi Pardee wrote:Create a generic_core_init() function for all architecture to reduce duplicate code in each architecture file. Create an info structure to catch the variations between each architecture and pass it to the generic init function. Convert all architectures to call the generic core init function. Signed-off-by: Xi Pardee <xi.pardee@xxxxxxxxxxxxxxx>This looks much better!--- drivers/platform/x86/intel/pmc/adl.c | 21 ++++-------- drivers/platform/x86/intel/pmc/arl.c | 47 ++++++++------------------- drivers/platform/x86/intel/pmc/cnp.c | 21 ++++-------- drivers/platform/x86/intel/pmc/core.c | 45 +++++++++++++++++++++++++ drivers/platform/x86/intel/pmc/core.h | 25 ++++++++++++++ drivers/platform/x86/intel/pmc/icl.c | 18 ++++------ drivers/platform/x86/intel/pmc/lnl.c | 24 +++++--------- drivers/platform/x86/intel/pmc/mtl.c | 45 +++++++------------------ drivers/platform/x86/intel/pmc/spt.c | 18 ++++------ drivers/platform/x86/intel/pmc/tgl.c | 31 +++++++++--------- 10 files changed, 145 insertions(+), 150 deletions(-) diff --git a/drivers/platform/x86/intel/pmc/adl.c b/drivers/platform/x86/intel/pmc/adl.c index e7878558fd909..ac37f4ece9c70 100644 --- a/drivers/platform/x86/intel/pmc/adl.c +++ b/drivers/platform/x86/intel/pmc/adl.c @@ -311,20 +311,13 @@ const struct pmc_reg_map adl_reg_map = { .pson_residency_counter_step = TGL_PSON_RES_COUNTER_STEP, };+static struct pmc_dev_info adl_pmc_dev = {+ .map = &adl_reg_map, + .suspend = cnl_suspend, + .resume = cnl_resume, +}; + int adl_core_init(struct pmc_dev *pmcdev) { - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - int ret; - - pmcdev->suspend = cnl_suspend; - pmcdev->resume = cnl_resume; - - pmc->map = &adl_reg_map; - ret = get_primary_reg_base(pmc); - if (ret) - return ret; - - pmc_core_get_low_power_modes(pmcdev); - - return 0; + return generic_core_init(pmcdev, &adl_pmc_dev); } diff --git a/drivers/platform/x86/intel/pmc/arl.c b/drivers/platform/x86/intel/pmc/arl.c index 05dec4f5019f3..137a1fdfee715 100644 --- a/drivers/platform/x86/intel/pmc/arl.c +++ b/drivers/platform/x86/intel/pmc/arl.c @@ -691,40 +691,19 @@ static int arl_resume(struct pmc_dev *pmcdev) return cnl_resume(pmcdev); }+static struct pmc_dev_info arl_pmc_dev = {+ .func = 0, + .ssram = true, + .dmu_guid = ARL_PMT_DMU_GUID, + .regmap_list = arl_pmc_info_list, + .map = &arl_socs_reg_map, + .fixup = arl_d3_fixup,I think the fixups should be left to be called from the per architecture init funcs.
Will rename the fixup field to platform_specifc (more explanation at the end).
Will move the comment to be a function comment for the generic_core_init() function.+ .suspend = cnl_suspend, + .resume = arl_resume, +}; + int arl_core_init(struct pmc_dev *pmcdev) { - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_SOC]; - int ret; - int func = 0; - bool ssram_init = true; - - arl_d3_fixup(); - pmcdev->suspend = cnl_suspend; - pmcdev->resume = arl_resume; - pmcdev->regmap_list = arl_pmc_info_list; - - /* - * If ssram init fails use legacy method to at least get the - * primary PMC - */ - ret = pmc_core_ssram_init(pmcdev, func); - if (ret) { - ssram_init = false; - pmc->map = &arl_socs_reg_map; - - ret = get_primary_reg_base(pmc); - if (ret) - return ret; - } - - pmc_core_get_low_power_modes(pmcdev); - pmc_core_punit_pmt_init(pmcdev, ARL_PMT_DMU_GUID); - - if (ssram_init) { - ret = pmc_core_ssram_get_lpm_reqs(pmcdev); - if (ret) - return ret; - } - - return 0; + return generic_core_init(pmcdev, &arl_pmc_dev); } + diff --git a/drivers/platform/x86/intel/pmc/cnp.c b/drivers/platform/x86/intel/pmc/cnp.c index fc5193fdf8a88..6d268058e40b9 100644 --- a/drivers/platform/x86/intel/pmc/cnp.c +++ b/drivers/platform/x86/intel/pmc/cnp.c @@ -274,20 +274,13 @@ int cnl_resume(struct pmc_dev *pmcdev) return pmc_core_resume_common(pmcdev); }+static struct pmc_dev_info cnp_pmc_dev = {+ .map = &cnp_reg_map, + .suspend = cnl_suspend, + .resume = cnl_resume, +}; + int cnp_core_init(struct pmc_dev *pmcdev) { - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - int ret; - - pmcdev->suspend = cnl_suspend; - pmcdev->resume = cnl_resume; - - pmc->map = &cnp_reg_map; - ret = get_primary_reg_base(pmc); - if (ret) - return ret; - - pmc_core_get_low_power_modes(pmcdev); - - return 0; + return generic_core_init(pmcdev, &cnp_pmc_dev); } diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c index 3e7f99ac8c941..8b73101dcfe95 100644 --- a/drivers/platform/x86/intel/pmc/core.c +++ b/drivers/platform/x86/intel/pmc/core.c @@ -1344,6 +1344,51 @@ static void pmc_core_dbgfs_register(struct pmc_dev *pmcdev) } }+int generic_core_init(struct pmc_dev *pmcdev, struct pmc_dev_info *pmc_dev_info)+{ + struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; + void (*fixup)(void) = pmc_dev_info->fixup; + bool ssram; + int ret; + + if (fixup) + fixup(); + + pmcdev->suspend = pmc_dev_info->suspend; + pmcdev->resume = pmc_dev_info->resume; + + /* + * If ssram init fails use legacy method to at least get the + * primary PMC + */This comment feels misplaced. I think you could simply make it a function comment instead as it describes the general level behavior within the function.
Thanks! We don't need ssram field as regmap_list indicates that if ssram support is enabled+ ssram = pmc_dev_info->ssram; + if (ssram) { + pmcdev->regmap_list = pmc_dev_info->regmap_list;I wonder why the pmc_dev_info->ssram is necessary, doesn't ->regmap_list != NULL tell the same information already? You might also want to mention it in the struct pmc_dev_info documentation that it implies SSRAM. So you could do: ssram = pmc_dev_info->ssram != NULL; if (ssram) { ...
for each architecture. Will remove ssram in the next version.
+ ret = pmc_core_ssram_init(pmcdev, pmc_dev_info->func); + if (ret) { + dev_warn(&pmcdev->pdev->dev, + "ssram init failed, %d, using legacy init\n", ret); + ssram = false; + } + } + + if (!ssram) { + pmc->map = pmc_dev_info->map; + ret = get_primary_reg_base(pmc); + if (ret) + return ret; + } + + pmc_core_get_low_power_modes(pmcdev); + if (pmc_dev_info->dmu_guid) + pmc_core_punit_pmt_init(pmcdev, pmc_dev_info->dmu_guid); + + if (ssram) + return pmc_core_ssram_get_lpm_reqs(pmcdev); + + return 0; +} + static const struct x86_cpu_id intel_pmc_core_ids[] = { X86_MATCH_VFM(INTEL_SKYLAKE_L, spt_core_init), X86_MATCH_VFM(INTEL_SKYLAKE, spt_core_init), diff --git a/drivers/platform/x86/intel/pmc/core.h b/drivers/platform/x86/intel/pmc/core.h index a1886d8e1ef3e..82be953db9463 100644 --- a/drivers/platform/x86/intel/pmc/core.h +++ b/drivers/platform/x86/intel/pmc/core.h @@ -436,6 +436,30 @@ enum pmc_index { PMC_IDX_MAX };+/**+ * struct pmc_dev_info - Structure to keep pmc device info + * @func: Function number of the primary pmcCapitalize "PMC" in the comments.
Will change it.
+ * @ssram: Bool shows if platform has ssram support + * @dmu_guid: DMU GUID + * @regmap_list: Pointer to a list of pmc_info structure that could be + * available for the platform + * @map: Pointer to a pmc_reg_map struct that contains platform + * specific attributes of the primary pmc + * @fixup: Function to perform platform specific fixup + * @suspend: Function to perform platform specific suspend + * @resume: Function to perform platform specific resume + */ +struct pmc_dev_info { + u8 func; + bool ssram; + u32 dmu_guid; + struct pmc_info *regmap_list; + const struct pmc_reg_map *map; + void (*fixup)(void); + void (*suspend)(struct pmc_dev *pmcdev); + int (*resume)(struct pmc_dev *pmcdev); +}; + extern const struct pmc_bit_map msr_map[]; extern const struct pmc_bit_map spt_pll_map[]; extern const struct pmc_bit_map spt_mphy_map[]; @@ -592,6 +616,7 @@ extern void pmc_core_set_device_d3(unsigned int device);extern int pmc_core_ssram_init(struct pmc_dev *pmcdev, int func); +int generic_core_init(struct pmc_dev *pmcdev, struct pmc_dev_info *pmc_dev_info);int spt_core_init(struct pmc_dev *pmcdev); int cnp_core_init(struct pmc_dev *pmcdev); int icl_core_init(struct pmc_dev *pmcdev); diff --git a/drivers/platform/x86/intel/pmc/icl.c b/drivers/platform/x86/intel/pmc/icl.c index 71b0fd6cb7d84..f044546e1aa5e 100644 --- a/drivers/platform/x86/intel/pmc/icl.c +++ b/drivers/platform/x86/intel/pmc/icl.c @@ -50,18 +50,12 @@ const struct pmc_reg_map icl_reg_map = { .etr3_offset = ETR3_OFFSET, };+static struct pmc_dev_info icl_pmc_dev = {+ .map = &icl_reg_map, +}; + int icl_core_init(struct pmc_dev *pmcdev) { - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - int ret; - - pmc->map = &icl_reg_map; - - ret = get_primary_reg_base(pmc); - if (ret) - return ret; - - pmc_core_get_low_power_modes(pmcdev); - - return ret; + return generic_core_init(pmcdev, &icl_pmc_dev); } + diff --git a/drivers/platform/x86/intel/pmc/lnl.c b/drivers/platform/x86/intel/pmc/lnl.c index be029f12cdf40..8f6b2a8d30438 100644 --- a/drivers/platform/x86/intel/pmc/lnl.c +++ b/drivers/platform/x86/intel/pmc/lnl.c @@ -550,22 +550,14 @@ static int lnl_resume(struct pmc_dev *pmcdev) return cnl_resume(pmcdev); }+static struct pmc_dev_info lnl_pmc_dev = {+ .map = &lnl_socm_reg_map, + .fixup = lnl_d3_fixup, + .suspend = cnl_suspend, + .resume = lnl_resume, +}; + int lnl_core_init(struct pmc_dev *pmcdev) { - int ret; - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_SOC];Hmm, so PMC_IDX_SOC and PMC_IDX_MAIN are set to same value which I haven't noticed before. I don't know why they were separate to begin with but I think you just removed all user of PMC_IDX_SOC so perhaps that it should be removed from enum as well?
Will remove PMC_IDX_SOC from enum in next version.
Right now we store the init function pointer for each architecture in X86_MATCH_VFM() structure. We could change it to be a pointer to the pmc_dev_info structure instead. Most of the per architecture init function call the generic_init function directly except for TGL init function. The TGL case can be handled by adding a new callback function pointer field named platform_specific and this field can also be used to replace the fixup field.- - lnl_d3_fixup(); - - pmcdev->suspend = cnl_suspend; - pmcdev->resume = lnl_resume; - - pmc->map = &lnl_socm_reg_map; - ret = get_primary_reg_base(pmc); - if (ret) - return ret; - - pmc_core_get_low_power_modes(pmcdev); - - return 0; + return generic_core_init(pmcdev, &lnl_pmc_dev); } diff --git a/drivers/platform/x86/intel/pmc/mtl.c b/drivers/platform/x86/intel/pmc/mtl.c index 02949fed76e91..b7a752e8adbc6 100644 --- a/drivers/platform/x86/intel/pmc/mtl.c +++ b/drivers/platform/x86/intel/pmc/mtl.c @@ -990,39 +990,18 @@ static int mtl_resume(struct pmc_dev *pmcdev) return cnl_resume(pmcdev); }+static struct pmc_dev_info mtl_pmc_dev = {+ .func = 2, + .ssram = true, + .dmu_guid = MTL_PMT_DMU_GUID, + .regmap_list = mtl_pmc_info_list, + .map = &mtl_socm_reg_map, + .fixup = mtl_d3_fixup, + .suspend = cnl_suspend, + .resume = mtl_resume, +}; + int mtl_core_init(struct pmc_dev *pmcdev) { - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_SOC]; - int ret; - int func = 2; - bool ssram_init = true; - - mtl_d3_fixup(); - - pmcdev->suspend = cnl_suspend; - pmcdev->resume = mtl_resume; - pmcdev->regmap_list = mtl_pmc_info_list; - - /* - * If ssram init fails use legacy method to at least get the - * primary PMC - */ - ret = pmc_core_ssram_init(pmcdev, func); - if (ret) { - ssram_init = false; - dev_warn(&pmcdev->pdev->dev, - "ssram init failed, %d, using legacy init\n", ret); - pmc->map = &mtl_socm_reg_map; - ret = get_primary_reg_base(pmc); - if (ret) - return ret; - } - - pmc_core_get_low_power_modes(pmcdev); - pmc_core_punit_pmt_init(pmcdev, MTL_PMT_DMU_GUID); - - if (ssram_init) - return pmc_core_ssram_get_lpm_reqs(pmcdev); - - return 0; + return generic_core_init(pmcdev, &mtl_pmc_dev); } diff --git a/drivers/platform/x86/intel/pmc/spt.c b/drivers/platform/x86/intel/pmc/spt.c index ab993a69e33ee..09d3ce09af736 100644 --- a/drivers/platform/x86/intel/pmc/spt.c +++ b/drivers/platform/x86/intel/pmc/spt.c @@ -134,18 +134,12 @@ const struct pmc_reg_map spt_reg_map = { .pm_vric1_offset = SPT_PMC_VRIC1_OFFSET, };+static struct pmc_dev_info spt_pmc_dev = {+ .map = &spt_reg_map, +}; + int spt_core_init(struct pmc_dev *pmcdev) { - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - int ret; - - pmc->map = &spt_reg_map; - - ret = get_primary_reg_base(pmc); - if (ret) - return ret; - - pmc_core_get_low_power_modes(pmcdev); - - return ret; + return generic_core_init(pmcdev, &spt_pmc_dev); } + diff --git a/drivers/platform/x86/intel/pmc/tgl.c b/drivers/platform/x86/intel/pmc/tgl.c index 4fec43d212d01..43a2aec4a5673 100644 --- a/drivers/platform/x86/intel/pmc/tgl.c +++ b/drivers/platform/x86/intel/pmc/tgl.c @@ -285,35 +285,36 @@ void pmc_core_get_tgl_lpm_reqs(struct platform_device *pdev) ACPI_FREE(out_obj); }-static int tgl_core_generic_init(struct pmc_dev *pmcdev, int pch_tp)-{ - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - int ret; +static struct pmc_dev_info tgl_l_pmc_dev = { + .map = &tgl_reg_map, + .suspend = cnl_suspend, + .resume = cnl_resume, +};- if (pch_tp == PCH_H)- pmc->map = &tgl_h_reg_map; - else - pmc->map = &tgl_reg_map; +static struct pmc_dev_info tgl_pmc_dev = { + .map = &tgl_h_reg_map, + .suspend = cnl_suspend, + .resume = cnl_resume, +};- pmcdev->suspend = cnl_suspend;- pmcdev->resume = cnl_resume; +static int tgl_core_generic_init(struct pmc_dev *pmcdev, struct pmc_dev_info *pmc_dev_info) +{ + int ret;- ret = get_primary_reg_base(pmc);+ ret = generic_core_init(pmcdev, &tgl_l_pmc_dev); if (ret) return ret;- pmc_core_get_low_power_modes(pmcdev);pmc_core_get_tgl_lpm_reqs(pmcdev->pdev); - return 0; }int tgl_l_core_init(struct pmc_dev *pmcdev){ - return tgl_core_generic_init(pmcdev, PCH_LP); + return tgl_core_generic_init(pmcdev, &tgl_l_pmc_dev); }int tgl_core_init(struct pmc_dev *pmcdev){ - return tgl_core_generic_init(pmcdev, PCH_H); + return tgl_core_generic_init(pmcdev, &tgl_pmc_dev); }It might be also worth to consider what is stored into those X86_MATCH_VFM()s so that the simple init functions could be removed entirely but it could be done in another patch on top of this one.
Thanks! Xi
