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SubjectRe: [PATCH 2/4] platform/x86: intel_pmc_core: Fix LTR IGNORE Max offset
On Mon, Sep 3, 2018 at 9:05 PM Rajneesh Bhardwaj
<rajneesh.bhardwaj@linux.intel.com> wrote:
>
> Cannonlake PCH allows us to ignore LTR from more IPs than Sunrisepoint
> PCH so make the LTR ignore platform specific.
>

This looks fine to me.

> Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>
> ---
> drivers/platform/x86/intel_pmc_core.c | 4 +++-
> drivers/platform/x86/intel_pmc_core.h | 4 +++-
> 2 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
> index 972735bd4c75..c1330a03523d 100644
> --- a/drivers/platform/x86/intel_pmc_core.c
> +++ b/drivers/platform/x86/intel_pmc_core.c
> @@ -149,6 +149,7 @@ static const struct pmc_reg_map spt_reg_map = {
> .ppfear_buckets = SPT_PPFEAR_NUM_ENTRIES,
> .pm_cfg_offset = SPT_PMC_PM_CFG_OFFSET,
> .pm_read_disable_bit = SPT_PMC_READ_DISABLE_BIT,
> + .ltr_ignore_max = SPT_NUM_IP_IGN_ALLOWED,
> };
>
> /* Cannonlake: PGD PFET Enable Ack Status Register(s) bitmap */
> @@ -320,6 +321,7 @@ static const struct pmc_reg_map cnp_reg_map = {
> .ppfear_buckets = CNP_PPFEAR_NUM_ENTRIES,
> .pm_cfg_offset = CNP_PMC_PM_CFG_OFFSET,
> .pm_read_disable_bit = CNP_PMC_READ_DISABLE_BIT,
> + .ltr_ignore_max = CNP_NUM_IP_IGN_ALLOWED,
> };
>
> static inline u8 pmc_core_reg_read_byte(struct pmc_dev *pmcdev, int offset)
> @@ -566,7 +568,7 @@ static ssize_t pmc_core_ltr_ignore_write(struct file *file, const char __user
> goto out_unlock;
> }
>
> - if (val > NUM_IP_IGN_ALLOWED) {
> + if (val > map->ltr_ignore_max) {
> err = -EINVAL;
> goto out_unlock;
> }
> diff --git a/drivers/platform/x86/intel_pmc_core.h b/drivers/platform/x86/intel_pmc_core.h
> index b24407048fa1..12663c58f122 100644
> --- a/drivers/platform/x86/intel_pmc_core.h
> +++ b/drivers/platform/x86/intel_pmc_core.h
> @@ -44,7 +44,7 @@
> #define SPT_PMC_READ_DISABLE_BIT 0x16
> #define SPT_PMC_MSG_FULL_STS_BIT 0x18
> #define NUM_RETRIES 100
> -#define NUM_IP_IGN_ALLOWED 17
> +#define SPT_NUM_IP_IGN_ALLOWED 17
> #define SPT_PMC_LTR_CUR_PLT 0x350
> #define SPT_PMC_LTR_CUR_ASLT 0x354
> #define SPT_PMC_LTR_SPA 0x360
> @@ -153,6 +153,7 @@ enum ppfear_regs {
> #define CNP_PPFEAR_NUM_ENTRIES 8
> #define CNP_PMC_READ_DISABLE_BIT 22
> #define CNP_PMC_LATCH_SLPS0_EVENTS BIT(31)
> +#define CNP_NUM_IP_IGN_ALLOWED 19
> #define CNP_PMC_LTR_CUR_PLT 0x1B50
> #define CNP_PMC_LTR_CUR_ASLT 0x1B54
> #define CNP_PMC_LTR_SPA 0x1B60
> @@ -215,6 +216,7 @@ struct pmc_reg_map {
> const u32 pm_cfg_offset;
> const int pm_read_disable_bit;
> const u32 slps0_dbg_offset;
> + const u32 ltr_ignore_max;
> };
>
> /**
> --
> 2.17.1
>


--
With Best Regards,
Andy Shevchenko

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