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Date: Tue, 12 Feb 2019 15:13:19 +0530
From: Anshuman Gupta <anshuman.gupta@...el.com>
To: Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>
Cc: platform-driver-x86@...r.kernel.org, dvhart@...radead.org,
andy@...radead.org, linux-kernel@...r.kernel.org,
"David E. Box" <david.e.box@...el.com>,
Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Subject: Re: [PATCH 08/10] platform/x86: intel_pmc_core: Add ICL platform
support
On Fri, Feb 01, 2019 at 01:02:32PM +0530, Rajneesh Bhardwaj wrote:
> Icelake can resue most of the CNL PCH IPs as they are mostly similar.
> This patch enables the PMC Core driver for ICL family.
>
> It also addresses few other minor issues like upper case conversions and
> some tab alignments.
>
> Cc: "David E. Box" <david.e.box@...el.com>
> Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>
Acked-and-tested-by: <anshuman.gupta@...el.com>
> ---
> drivers/platform/x86/intel_pmc_core.c | 59 +++++++++++++++++++++------
> drivers/platform/x86/intel_pmc_core.h | 4 ++
> 2 files changed, 50 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
> index d3752d75075b..400946b7a3b5 100644
> --- a/drivers/platform/x86/intel_pmc_core.c
> +++ b/drivers/platform/x86/intel_pmc_core.c
> @@ -166,25 +166,26 @@ static const struct pmc_bit_map cnp_pfear_map[] = {
> {"SDX", BIT(4)},
> {"SPE", BIT(5)},
> {"Fuse", BIT(6)},
> - {"Res_23", BIT(7)},
> + /* Reserved for Cannonlake but valid for Icelake */
> + {"SBR8", BIT(7)},
>
> {"CSME_FSC", BIT(0)},
> {"USB3_OTG", BIT(1)},
> {"EXI", BIT(2)},
> {"CSE", BIT(3)},
> - {"csme_kvm", BIT(4)},
> - {"csme_pmt", BIT(5)},
> - {"csme_clink", BIT(6)},
> - {"csme_ptio", BIT(7)},
> -
> - {"csme_usbr", BIT(0)},
> - {"csme_susram", BIT(1)},
> - {"csme_smt1", BIT(2)},
> + {"CSME_KVM", BIT(4)},
> + {"CSME_PMT", BIT(5)},
> + {"CSME_CLINK", BIT(6)},
> + {"CSME_PTIO", BIT(7)},
> +
> + {"CSME_USBR", BIT(0)},
> + {"CSME_SUSRAM", BIT(1)},
> + {"CSME_SMT1", BIT(2)},
> {"CSME_SMT4", BIT(3)},
> - {"csme_sms2", BIT(4)},
> - {"csme_sms1", BIT(5)},
> - {"csme_rtc", BIT(6)},
> - {"csme_psf", BIT(7)},
> + {"CSME_SMS2", BIT(4)},
> + {"CSME_SMS1", BIT(5)},
> + {"CSME_RTC", BIT(6)},
> + {"CSME_PSF", BIT(7)},
>
> {"SBR0", BIT(0)},
> {"SBR1", BIT(1)},
> @@ -209,6 +210,20 @@ static const struct pmc_bit_map cnp_pfear_map[] = {
> {"HDA_PGD4", BIT(2)},
> {"HDA_PGD5", BIT(3)},
> {"HDA_PGD6", BIT(4)},
> + /* Reserved for Cannonlake but valid for Icelake */
> + {"PSF6", BIT(5)},
> + {"PSF7", BIT(6)},
> + {"PSF8", BIT(7)},
> +
> + /* Icelake generation onwards only */
> + {"RES_65", BIT(0)},
> + {"RES_66", BIT(1)},
> + {"RES_67", BIT(2)},
> + {"TAM", BIT(3)},
> + {"GBETSN", BIT(4)},
> + {"TBTLSX", BIT(5)},
> + {"RES_71", BIT(6)},
> + {"RES_72", BIT(7)},
> {}
> };
>
> @@ -290,6 +305,8 @@ static const struct pmc_bit_map cnp_ltr_show_map[] = {
> {"ISH", CNP_PMC_LTR_ISH},
> {"UFSX2", CNP_PMC_LTR_UFSX2},
> {"EMMC", CNP_PMC_LTR_EMMC},
> + /* Reserved for Cannonlake but valid for Icelake */
> + {"WIGIG", ICL_PMC_LTR_WIGIG},
> /* Below two cannot be used for LTR_IGNORE */
> {"CURRENT_PLATFORM", CNP_PMC_LTR_CUR_PLT},
> {"AGGREGATED_SYSTEM", CNP_PMC_LTR_CUR_ASLT},
> @@ -311,6 +328,21 @@ static const struct pmc_reg_map cnp_reg_map = {
> .ltr_ignore_max = CNP_NUM_IP_IGN_ALLOWED,
> };
>
> +static const struct pmc_reg_map icl_reg_map = {
> + .pfear_sts = cnp_pfear_map,
> + .slp_s0_offset = CNP_PMC_SLP_S0_RES_COUNTER_OFFSET,
> + .slps0_dbg_maps = cnp_slps0_dbg_maps,
> + .ltr_show_sts = cnp_ltr_show_map,
> + .slps0_dbg_offset = CNP_PMC_SLPS0_DBG_OFFSET,
> + .ltr_ignore_offset = CNP_PMC_LTR_IGNORE_OFFSET,
> + .regmap_length = CNP_PMC_MMIO_REG_LEN,
> + .ppfear0_offset = CNP_PMC_HOST_PPFEAR0A,
> + .ppfear_buckets = ICL_PPFEAR_NUM_ENTRIES,
> + .pm_cfg_offset = CNP_PMC_PM_CFG_OFFSET,
> + .pm_read_disable_bit = CNP_PMC_READ_DISABLE_BIT,
> + .ltr_ignore_max = ICL_NUM_IP_IGN_ALLOWED,
> +};
> +
> static inline u8 pmc_core_reg_read_byte(struct pmc_dev *pmcdev, int offset)
> {
> return readb(pmcdev->regbase + offset);
> @@ -740,6 +772,7 @@ static const struct x86_cpu_id intel_pmc_core_ids[] = {
> INTEL_CPU_FAM6(KABYLAKE_MOBILE, spt_reg_map),
> INTEL_CPU_FAM6(KABYLAKE_DESKTOP, spt_reg_map),
> INTEL_CPU_FAM6(CANNONLAKE_MOBILE, cnp_reg_map),
> + INTEL_CPU_FAM6(ICELAKE_MOBILE, icl_reg_map),
> {}
> };
>
> diff --git a/drivers/platform/x86/intel_pmc_core.h b/drivers/platform/x86/intel_pmc_core.h
> index 0680ca397b57..78dd4229489d 100644
> --- a/drivers/platform/x86/intel_pmc_core.h
> +++ b/drivers/platform/x86/intel_pmc_core.h
> @@ -178,6 +178,10 @@ enum ppfear_regs {
> #define LTR_REQ_SNOOP BIT(15)
> #define LTR_REQ_NONSNOOP BIT(31)
>
> +#define ICL_PPFEAR_NUM_ENTRIES 9
> +#define ICL_NUM_IP_IGN_ALLOWED 20
> +#define ICL_PMC_LTR_WIGIG 0x1BFC
> +
> struct pmc_bit_map {
> const char *name;
> u32 bit_mask;
> --
> 2.17.1
>
--
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