lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 6 May 2020 15:42:13 +0800
From:   Weiyi Lu <weiyi.lu@...iatek.com>
To:     Enric Balletbo Serra <eballetbo@...il.com>
CC:     Rob Herring <robh@...nel.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        srv_heupstream <srv_heupstream@...iatek.com>,
        JamesJJ Liao (廖建智) 
        <jamesjj.liao@...iatek.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Fan Chen (陳凡) 
        <fan.chen@...iatek.com>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        "Sascha Hauer" <kernel@...gutronix.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v13 04/11] soc: mediatek: Remove infracfg misc driver
 support


On Fri, 2020-04-24 at 02:19 +0800, Enric Balletbo Serra wrote:
> Hi Weiyi Lu,
> 
> Thank you for the patch
> 
> Missatge de Weiyi Lu <weiyi.lu@...iatek.com> del dia dv., 20 de març
> 2020 a les 8:33:
> >
> > The functions provided by infracfg misc driver have no other user except
> > the scpsys driver so move those into scpsys driver directly.
> > And then, remove infracfg misc drvier which is no longer being used.
> > BTW, in next patch, we're going to extend the bus protection functions
> > with more customized arguments.
> >
> > Signed-off-by: Weiyi Lu <weiyi.lu@...iatek.com>
> > ---
> >  drivers/soc/mediatek/Kconfig          | 10 -----
> >  drivers/soc/mediatek/Makefile         |  1 -
> >  drivers/soc/mediatek/mtk-infracfg.c   | 79 -----------------------------------
> >  drivers/soc/mediatek/mtk-scpsys.c     | 44 +++++++++++++++----
> >  drivers/soc/mediatek/scpsys.h         | 28 +++++++++++++
> >  include/linux/soc/mediatek/infracfg.h | 39 -----------------
> >  6 files changed, 63 insertions(+), 138 deletions(-)
> >  delete mode 100644 drivers/soc/mediatek/mtk-infracfg.c
> >  create mode 100644 drivers/soc/mediatek/scpsys.h
> >  delete mode 100644 include/linux/soc/mediatek/infracfg.h
> >
> > diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
> > index 2114b56..f837b3c 100644
> > --- a/drivers/soc/mediatek/Kconfig
> > +++ b/drivers/soc/mediatek/Kconfig
> > @@ -10,21 +10,12 @@ config MTK_CMDQ
> >         depends on ARCH_MEDIATEK || COMPILE_TEST
> >         select MAILBOX
> >         select MTK_CMDQ_MBOX
> > -       select MTK_INFRACFG
> >         help
> >           Say yes here to add support for the MediaTek Command Queue (CMDQ)
> >           driver. The CMDQ is used to help read/write registers with critical
> >           time limitation, such as updating display configuration during the
> >           vblank.
> >
> > -config MTK_INFRACFG
> > -       bool "MediaTek INFRACFG Support"
> > -       select REGMAP
> > -       help
> > -         Say yes here to add support for the MediaTek INFRACFG controller. The
> > -         INFRACFG controller contains various infrastructure registers not
> > -         directly associated to any device.
> > -
> >  config MTK_PMIC_WRAP
> >         tristate "MediaTek PMIC Wrapper Support"
> >         depends on RESET_CONTROLLER
> > @@ -38,7 +29,6 @@ config MTK_SCPSYS
> >         bool "MediaTek SCPSYS Support"
> >         default ARCH_MEDIATEK
> >         select REGMAP
> > -       select MTK_INFRACFG
> >         select PM_GENERIC_DOMAINS if PM
> >         help
> >           Say yes here to add support for the MediaTek SCPSYS power domain
> > diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile
> > index b017330..2b2c2537 100644
> > --- a/drivers/soc/mediatek/Makefile
> > +++ b/drivers/soc/mediatek/Makefile
> > @@ -1,5 +1,4 @@
> >  # SPDX-License-Identifier: GPL-2.0-only
> >  obj-$(CONFIG_MTK_CMDQ) += mtk-cmdq-helper.o
> > -obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o
> >  obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o
> >  obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o
> > diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c
> > deleted file mode 100644
> > index 341c7ac..0000000
> > --- a/drivers/soc/mediatek/mtk-infracfg.c
> > +++ /dev/null
> > @@ -1,79 +0,0 @@
> > -// SPDX-License-Identifier: GPL-2.0-only
> > -/*
> > - * Copyright (c) 2015 Pengutronix, Sascha Hauer <kernel@...gutronix.de>
> > - */
> > -
> > -#include <linux/export.h>
> > -#include <linux/jiffies.h>
> > -#include <linux/regmap.h>
> > -#include <linux/soc/mediatek/infracfg.h>
> > -#include <asm/processor.h>
> > -
> > -#define MTK_POLL_DELAY_US   10
> > -#define MTK_POLL_TIMEOUT    (jiffies_to_usecs(HZ))
> > -
> > -#define INFRA_TOPAXI_PROTECTEN         0x0220
> > -#define INFRA_TOPAXI_PROTECTSTA1       0x0228
> > -#define INFRA_TOPAXI_PROTECTEN_SET     0x0260
> > -#define INFRA_TOPAXI_PROTECTEN_CLR     0x0264
> > -
> > -/**
> > - * mtk_infracfg_set_bus_protection - enable bus protection
> > - * @regmap: The infracfg regmap
> > - * @mask: The mask containing the protection bits to be enabled.
> > - * @reg_update: The boolean flag determines to set the protection bits
> > - *              by regmap_update_bits with enable register(PROTECTEN) or
> > - *              by regmap_write with set register(PROTECTEN_SET).
> > - *
> > - * This function enables the bus protection bits for disabled power
> > - * domains so that the system does not hang when some unit accesses the
> > - * bus while in power down.
> > - */
> > -int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
> > -               bool reg_update)
> > -{
> > -       u32 val;
> > -       int ret;
> > -
> > -       if (reg_update)
> > -               regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask,
> > -                               mask);
> > -       else
> > -               regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_SET, mask);
> > -
> > -       ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
> > -                                      val, (val & mask) == mask,
> > -                                      MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
> > -
> > -       return ret;
> > -}
> > -
> > -/**
> > - * mtk_infracfg_clear_bus_protection - disable bus protection
> > - * @regmap: The infracfg regmap
> > - * @mask: The mask containing the protection bits to be disabled.
> > - * @reg_update: The boolean flag determines to clear the protection bits
> > - *              by regmap_update_bits with enable register(PROTECTEN) or
> > - *              by regmap_write with clear register(PROTECTEN_CLR).
> > - *
> > - * This function disables the bus protection bits previously enabled with
> > - * mtk_infracfg_set_bus_protection.
> > - */
> > -
> > -int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,
> > -               bool reg_update)
> > -{
> > -       int ret;
> > -       u32 val;
> > -
> > -       if (reg_update)
> > -               regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0);
> > -       else
> > -               regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_CLR, mask);
> > -
> > -       ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
> > -                                      val, !(val & mask),
> > -                                      MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
> > -
> > -       return ret;
> > -}
> > diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
> > index db35a28..e50a568 100644
> > --- a/drivers/soc/mediatek/mtk-scpsys.c
> > +++ b/drivers/soc/mediatek/mtk-scpsys.c
> > @@ -10,8 +10,9 @@
> >  #include <linux/of_device.h>
> >  #include <linux/platform_device.h>
> >  #include <linux/pm_domain.h>
> > +#include <linux/regmap.h>
> >  #include <linux/regulator/consumer.h>
> > -#include <linux/soc/mediatek/infracfg.h>
> > +#include "scpsys.h"
> 
> Are the defines in this include going to be used somewhere else?
> Otherwise, you can add the defines in this file directly.
> 

Supposed to be NO, so I'll add directly in this file in next version.

> 
> >
> >  #include <dt-bindings/power/mt2701-power.h>
> >  #include <dt-bindings/power/mt2712-power.h>
> > @@ -251,25 +252,50 @@ static int scpsys_sram_disable(struct scp_domain *scpd, void __iomem *ctl_addr)
> >  static int scpsys_bus_protect_enable(struct scp_domain *scpd)
> >  {
> >         struct scp *scp = scpd->scp;
> > +       struct regmap *infracfg = scp->infracfg;
> > +       u32 mask = scpd->data->bus_prot_mask;
> > +       bool reg_update = scp->bus_prot_reg_update;
> > +       u32 val;
> > +       int ret;
> >
> > -       if (!scpd->data->bus_prot_mask)
> > +       if (!mask)
> >                 return 0;
> >
> > -       return mtk_infracfg_set_bus_protection(scp->infracfg,
> > -                       scpd->data->bus_prot_mask,
> > -                       scp->bus_prot_reg_update);
> > +       if (reg_update)
> > +               regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask,
> > +                               mask);
> > +       else
> > +               regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_SET, mask);
> > +
> > +       ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
> > +                                      val, (val & mask) == mask,
> > +                                      MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
> > +
> > +       return ret;
> >  }
> >
> >  static int scpsys_bus_protect_disable(struct scp_domain *scpd)
> >  {
> >         struct scp *scp = scpd->scp;
> > +       struct regmap *infracfg = scp->infracfg;
> > +       u32 mask = scpd->data->bus_prot_mask;
> > +       bool reg_update = scp->bus_prot_reg_update;
> > +       u32 val;
> > +       int ret;
> >
> > -       if (!scpd->data->bus_prot_mask)
> > +       if (!mask)
> >                 return 0;
> >
> > -       return mtk_infracfg_clear_bus_protection(scp->infracfg,
> > -                       scpd->data->bus_prot_mask,
> > -                       scp->bus_prot_reg_update);
> > +       if (reg_update)
> > +               regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0);
> > +       else
> > +               regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_CLR, mask);
> > +
> > +       ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
> > +                                      val, !(val & mask),
> > +                                      MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
> > +
> > +       return ret;
> >  }
> >
> >  static int scpsys_power_on(struct generic_pm_domain *genpd)
> > diff --git a/drivers/soc/mediatek/scpsys.h b/drivers/soc/mediatek/scpsys.h
> > new file mode 100644
> > index 0000000..ad2559b
> > --- /dev/null
> > +++ b/drivers/soc/mediatek/scpsys.h
> > @@ -0,0 +1,28 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +#ifndef __SOC_MEDIATEK_SCPSYS_H
> > +#define __SOC_MEDIATEK_SCPSYS_H
> > +
> > +#define INFRA_TOPAXI_PROTECTEN         0x0220
> > +#define INFRA_TOPAXI_PROTECTSTA1       0x0228
> > +#define INFRA_TOPAXI_PROTECTEN_SET     0x0260
> > +#define INFRA_TOPAXI_PROTECTEN_CLR     0x0264
> > +
> > +#define MT2701_TOP_AXI_PROT_EN_MM_M0           BIT(1)
> > +#define MT2701_TOP_AXI_PROT_EN_CONN_M          BIT(2)
> > +#define MT2701_TOP_AXI_PROT_EN_CONN_S          BIT(8)
> > +
> > +#define MT7622_TOP_AXI_PROT_EN_ETHSYS          (BIT(3) | BIT(17))
> > +#define MT7622_TOP_AXI_PROT_EN_HIF0            (BIT(24) | BIT(25))
> > +#define MT7622_TOP_AXI_PROT_EN_HIF1            (BIT(26) | BIT(27) | \
> > +                                                BIT(28))
> > +#define MT7622_TOP_AXI_PROT_EN_WB              (BIT(2) | BIT(6) | \
> > +                                                BIT(7) | BIT(8))
> > +
> > +#define MT8173_TOP_AXI_PROT_EN_MM_M0           BIT(1)
> > +#define MT8173_TOP_AXI_PROT_EN_MM_M1           BIT(2)
> > +#define MT8173_TOP_AXI_PROT_EN_MFG_S           BIT(14)
> > +#define MT8173_TOP_AXI_PROT_EN_MFG_M0          BIT(21)
> > +#define MT8173_TOP_AXI_PROT_EN_MFG_M1          BIT(22)
> > +#define MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT   BIT(23)
> > +
> > +#endif /* __SOC_MEDIATEK_SCPSYS_H */
> > diff --git a/include/linux/soc/mediatek/infracfg.h b/include/linux/soc/mediatek/infracfg.h
> > deleted file mode 100644
> > index fd25f01..0000000
> > --- a/include/linux/soc/mediatek/infracfg.h
> > +++ /dev/null
> > @@ -1,39 +0,0 @@
> > -/* SPDX-License-Identifier: GPL-2.0 */
> > -#ifndef __SOC_MEDIATEK_INFRACFG_H
> > -#define __SOC_MEDIATEK_INFRACFG_H
> > -
> > -#define MT8173_TOP_AXI_PROT_EN_MCI_M2          BIT(0)
> > -#define MT8173_TOP_AXI_PROT_EN_MM_M0           BIT(1)
> > -#define MT8173_TOP_AXI_PROT_EN_MM_M1           BIT(2)
> > -#define MT8173_TOP_AXI_PROT_EN_MMAPB_S         BIT(6)
> > -#define MT8173_TOP_AXI_PROT_EN_L2C_M2          BIT(9)
> > -#define MT8173_TOP_AXI_PROT_EN_L2SS_SMI                BIT(11)
> > -#define MT8173_TOP_AXI_PROT_EN_L2SS_ADD                BIT(12)
> > -#define MT8173_TOP_AXI_PROT_EN_CCI_M2          BIT(13)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_S           BIT(14)
> > -#define MT8173_TOP_AXI_PROT_EN_PERI_M0         BIT(15)
> > -#define MT8173_TOP_AXI_PROT_EN_PERI_M1         BIT(16)
> > -#define MT8173_TOP_AXI_PROT_EN_DEBUGSYS                BIT(17)
> > -#define MT8173_TOP_AXI_PROT_EN_CQ_DMA          BIT(18)
> > -#define MT8173_TOP_AXI_PROT_EN_GCPU            BIT(19)
> > -#define MT8173_TOP_AXI_PROT_EN_IOMMU           BIT(20)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_M0          BIT(21)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_M1          BIT(22)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT   BIT(23)
> > -
> > -#define MT2701_TOP_AXI_PROT_EN_MM_M0           BIT(1)
> > -#define MT2701_TOP_AXI_PROT_EN_CONN_M          BIT(2)
> > -#define MT2701_TOP_AXI_PROT_EN_CONN_S          BIT(8)
> > -
> > -#define MT7622_TOP_AXI_PROT_EN_ETHSYS          (BIT(3) | BIT(17))
> > -#define MT7622_TOP_AXI_PROT_EN_HIF0            (BIT(24) | BIT(25))
> > -#define MT7622_TOP_AXI_PROT_EN_HIF1            (BIT(26) | BIT(27) | \
> > -                                                BIT(28))
> > -#define MT7622_TOP_AXI_PROT_EN_WB              (BIT(2) | BIT(6) | \
> > -                                                BIT(7) | BIT(8))
> > -
> > -int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
> > -               bool reg_update);
> > -int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,
> > -               bool reg_update);
> > -#endif /* __SOC_MEDIATEK_INFRACFG_H */
> > --
> > 1.8.1.1.dirty
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek
> 
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek


Powered by blists - more mailing lists