Re: [PATCH v2 2/4] platform/x86: intel_pmc_core: Fix LTR IGNORE Max offset

From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: rajneesh.bhardwaj@linux.intel.com
Cc: Platform Driver <platform-driver-x86@vger.kernel.org>,
	Darren Hart <dvhart@infradead.org>,
	Andy Shevchenko <andy@infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Rajneesh Bhardwaj <rajneesh.bhardwaj@intel.com>
Subject: Re: [PATCH v2 2/4] platform/x86: intel_pmc_core: Fix LTR IGNORE Max offset
Date: Fri, 19 Oct 2018 15:13:29 +0300	[thread overview]
Message-ID: <CAHp75Vde__h3XDjw_TLQA8YVrnCU+_JJgr-Mr_gtQE77Pwjy2A@mail.gmail.com> (raw)
In-Reply-To: <20181006065113.669-2-rajneesh.bhardwaj@linux.intel.com>

On Sat, Oct 6, 2018 at 9:54 AM 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.
>

Pushed to my reviewing and testing queue, thanks!

> 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 217a822a8da1..c616cfedf2be 100644
> --- a/drivers/platform/x86/intel_pmc_core.c
> +++ b/drivers/platform/x86/intel_pmc_core.c
> @@ -148,6 +148,7 @@ 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 */
> @@ -319,6 +320,7 @@ 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)
> @@ -565,7 +567,7 @@ 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 7a00436e337d..7f8181057ec8 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
> @@ -154,6 +154,7 @@ 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
> @@ -216,6 +217,7 @@ 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