From: Azhar Shaikh <azhar.shaikh@intel.com> To: jarkko.sakkinen@linux.intel.com, jgunthorpe@obsidianresearch.com, peterhuewe@gmx.de Cc: linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, tpmdd-devel@lists.sourceforge.net, azhar.shaikh@intel.com Subject: [PATCH v4 2/2] tpm_tis: Move ilb_base_addr to tpm_tis_tcg_phy Date: Tue, 21 Nov 2017 14:39:24 -0800 [thread overview] Message-ID: <1511303964-56294-3-git-send-email-azhar.shaikh@intel.com> (raw) In-Reply-To: <1511303964-56294-1-git-send-email-azhar.shaikh@intel.com> Move the static variable ilb_base_addr to tpm_tis_tcg_phy. Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com> --- drivers/char/tpm/tpm_tis.c | 67 ++++++++++++++++++++++++++-------------------- 1 file changed, 38 insertions(+), 29 deletions(-) diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index 76a7b64195c8..d87b37c5404b 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -46,6 +46,7 @@ struct tpm_info { struct tpm_tis_tcg_phy { struct tpm_tis_data priv; void __iomem *iobase; + void __iomem *ilb_base_addr; bool begin_xfer_done; }; @@ -134,19 +135,22 @@ static int check_acpi_tpm2(struct device *dev) } #endif +static inline bool is_bsw(void) +{ #ifdef CONFIG_X86 + return ((boot_cpu_data.x86_model == INTEL_FAM6_ATOM_AIRMONT) ? 1 : 0); +#else + return false; +#endif +} + #define INTEL_LEGACY_BLK_BASE_ADDR 0xFED08000 #define ILB_REMAP_SIZE 0x100 + +#ifdef CONFIG_X86 #define LPC_CNTRL_REG_OFFSET 0x84 #define LPC_CLKRUN_EN (1 << 2) -static void __iomem *ilb_base_addr; - -static inline bool is_bsw(void) -{ - return ((boot_cpu_data.x86_model == INTEL_FAM6_ATOM_AIRMONT) ? 1 : 0); -} - /** * tpm_platform_begin_xfer() - clear LPC CLKRUN_EN i.e. clocks will be running * @data: struct tpm_tis_data instance @@ -160,11 +164,11 @@ static void tpm_platform_begin_xfer(struct tpm_tis_data *data) phy->begin_xfer_done)) return; - clkrun_val = ioread32(ilb_base_addr + LPC_CNTRL_REG_OFFSET); + clkrun_val = ioread32(phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* Disable LPC CLKRUN# */ clkrun_val &= ~LPC_CLKRUN_EN; - iowrite32(clkrun_val, ilb_base_addr + LPC_CNTRL_REG_OFFSET); + iowrite32(clkrun_val, phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* * Write any random value on port 0x80 which is on LPC, to make @@ -185,15 +189,16 @@ static void tpm_platform_begin_xfer(struct tpm_tis_data *data) static void tpm_platform_end_xfer(struct tpm_tis_data *data) { u32 clkrun_val; + struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data); if (!is_bsw() || (data->flags & TPM_TIS_CLK_ENABLE)) return; - clkrun_val = ioread32(ilb_base_addr + LPC_CNTRL_REG_OFFSET); + clkrun_val = ioread32(phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* Enable LPC CLKRUN# */ clkrun_val |= LPC_CLKRUN_EN; - iowrite32(clkrun_val, ilb_base_addr + LPC_CNTRL_REG_OFFSET); + iowrite32(clkrun_val, phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* * Write any random value on port 0x80 which is on LPC, to make @@ -204,10 +209,6 @@ static void tpm_platform_end_xfer(struct tpm_tis_data *data) } #else -static inline bool is_bsw(void) -{ - return false; -} static void tpm_platform_begin_xfer(struct tpm_tis_data *data) { } @@ -311,14 +312,25 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info) if (IS_ERR(phy->iobase)) return PTR_ERR(phy->iobase); + if (is_bsw()) { + phy->ilb_base_addr = ioremap(INTEL_LEGACY_BLK_BASE_ADDR, + ILB_REMAP_SIZE); + if (!phy->ilb_base_addr) + return -ENOMEM; + } + if (interrupts) irq = tpm_info->irq; if (itpm || is_itpm(ACPI_COMPANION(dev))) phy->priv.flags |= TPM_TIS_ITPM_WORKAROUND; - return tpm_tis_core_init(dev, &phy->priv, irq, &tpm_tcg, + rc = tpm_tis_core_init(dev, &phy->priv, irq, &tpm_tcg, ACPI_HANDLE(dev)); + if (rc && is_bsw()) + iounmap(phy->ilb_base_addr); + + return rc; } static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume); @@ -359,9 +371,14 @@ static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev, static void tpm_tis_pnp_remove(struct pnp_dev *dev) { struct tpm_chip *chip = pnp_get_drvdata(dev); + struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev); + struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(priv); tpm_chip_unregister(chip); tpm_tis_remove(chip); + + if (is_bsw()) + iounmap(phy->ilb_base_addr); } static struct pnp_driver tis_pnp_driver = { @@ -408,10 +425,15 @@ static int tpm_tis_plat_probe(struct platform_device *pdev) static int tpm_tis_plat_remove(struct platform_device *pdev) { struct tpm_chip *chip = dev_get_drvdata(&pdev->dev); + struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev); + struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(priv); tpm_chip_unregister(chip); tpm_tis_remove(chip); + if (is_bsw()) + iounmap(phy->ilb_base_addr); + return 0; } @@ -469,11 +491,6 @@ static int __init init_tis(void) if (rc) goto err_force; -#ifdef CONFIG_X86 - if (is_bsw()) - ilb_base_addr = ioremap(INTEL_LEGACY_BLK_BASE_ADDR, - ILB_REMAP_SIZE); -#endif rc = platform_driver_register(&tis_drv); if (rc) goto err_platform; @@ -492,10 +509,6 @@ static int __init init_tis(void) err_platform: if (force_pdev) platform_device_unregister(force_pdev); -#ifdef CONFIG_X86 - if (is_bsw()) - iounmap(ilb_base_addr); -#endif err_force: return rc; } @@ -505,10 +518,6 @@ static void __exit cleanup_tis(void) pnp_unregister_driver(&tis_pnp_driver); platform_driver_unregister(&tis_drv); -#ifdef CONFIG_X86 - if (is_bsw()) - iounmap(ilb_base_addr); -#endif if (force_pdev) platform_device_unregister(force_pdev); } -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: azhar.shaikh@intel.com (Azhar Shaikh) To: linux-security-module@vger.kernel.org Subject: [PATCH v4 2/2] tpm_tis: Move ilb_base_addr to tpm_tis_tcg_phy Date: Tue, 21 Nov 2017 14:39:24 -0800 [thread overview] Message-ID: <1511303964-56294-3-git-send-email-azhar.shaikh@intel.com> (raw) In-Reply-To: <1511303964-56294-1-git-send-email-azhar.shaikh@intel.com> Move the static variable ilb_base_addr to tpm_tis_tcg_phy. Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com> --- drivers/char/tpm/tpm_tis.c | 67 ++++++++++++++++++++++++++-------------------- 1 file changed, 38 insertions(+), 29 deletions(-) diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index 76a7b64195c8..d87b37c5404b 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -46,6 +46,7 @@ struct tpm_info { struct tpm_tis_tcg_phy { struct tpm_tis_data priv; void __iomem *iobase; + void __iomem *ilb_base_addr; bool begin_xfer_done; }; @@ -134,19 +135,22 @@ static int check_acpi_tpm2(struct device *dev) } #endif +static inline bool is_bsw(void) +{ #ifdef CONFIG_X86 + return ((boot_cpu_data.x86_model == INTEL_FAM6_ATOM_AIRMONT) ? 1 : 0); +#else + return false; +#endif +} + #define INTEL_LEGACY_BLK_BASE_ADDR 0xFED08000 #define ILB_REMAP_SIZE 0x100 + +#ifdef CONFIG_X86 #define LPC_CNTRL_REG_OFFSET 0x84 #define LPC_CLKRUN_EN (1 << 2) -static void __iomem *ilb_base_addr; - -static inline bool is_bsw(void) -{ - return ((boot_cpu_data.x86_model == INTEL_FAM6_ATOM_AIRMONT) ? 1 : 0); -} - /** * tpm_platform_begin_xfer() - clear LPC CLKRUN_EN i.e. clocks will be running * @data: struct tpm_tis_data instance @@ -160,11 +164,11 @@ static void tpm_platform_begin_xfer(struct tpm_tis_data *data) phy->begin_xfer_done)) return; - clkrun_val = ioread32(ilb_base_addr + LPC_CNTRL_REG_OFFSET); + clkrun_val = ioread32(phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* Disable LPC CLKRUN# */ clkrun_val &= ~LPC_CLKRUN_EN; - iowrite32(clkrun_val, ilb_base_addr + LPC_CNTRL_REG_OFFSET); + iowrite32(clkrun_val, phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* * Write any random value on port 0x80 which is on LPC, to make @@ -185,15 +189,16 @@ static void tpm_platform_begin_xfer(struct tpm_tis_data *data) static void tpm_platform_end_xfer(struct tpm_tis_data *data) { u32 clkrun_val; + struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data); if (!is_bsw() || (data->flags & TPM_TIS_CLK_ENABLE)) return; - clkrun_val = ioread32(ilb_base_addr + LPC_CNTRL_REG_OFFSET); + clkrun_val = ioread32(phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* Enable LPC CLKRUN# */ clkrun_val |= LPC_CLKRUN_EN; - iowrite32(clkrun_val, ilb_base_addr + LPC_CNTRL_REG_OFFSET); + iowrite32(clkrun_val, phy->ilb_base_addr + LPC_CNTRL_REG_OFFSET); /* * Write any random value on port 0x80 which is on LPC, to make @@ -204,10 +209,6 @@ static void tpm_platform_end_xfer(struct tpm_tis_data *data) } #else -static inline bool is_bsw(void) -{ - return false; -} static void tpm_platform_begin_xfer(struct tpm_tis_data *data) { } @@ -311,14 +312,25 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info) if (IS_ERR(phy->iobase)) return PTR_ERR(phy->iobase); + if (is_bsw()) { + phy->ilb_base_addr = ioremap(INTEL_LEGACY_BLK_BASE_ADDR, + ILB_REMAP_SIZE); + if (!phy->ilb_base_addr) + return -ENOMEM; + } + if (interrupts) irq = tpm_info->irq; if (itpm || is_itpm(ACPI_COMPANION(dev))) phy->priv.flags |= TPM_TIS_ITPM_WORKAROUND; - return tpm_tis_core_init(dev, &phy->priv, irq, &tpm_tcg, + rc = tpm_tis_core_init(dev, &phy->priv, irq, &tpm_tcg, ACPI_HANDLE(dev)); + if (rc && is_bsw()) + iounmap(phy->ilb_base_addr); + + return rc; } static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume); @@ -359,9 +371,14 @@ static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev, static void tpm_tis_pnp_remove(struct pnp_dev *dev) { struct tpm_chip *chip = pnp_get_drvdata(dev); + struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev); + struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(priv); tpm_chip_unregister(chip); tpm_tis_remove(chip); + + if (is_bsw()) + iounmap(phy->ilb_base_addr); } static struct pnp_driver tis_pnp_driver = { @@ -408,10 +425,15 @@ static int tpm_tis_plat_probe(struct platform_device *pdev) static int tpm_tis_plat_remove(struct platform_device *pdev) { struct tpm_chip *chip = dev_get_drvdata(&pdev->dev); + struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev); + struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(priv); tpm_chip_unregister(chip); tpm_tis_remove(chip); + if (is_bsw()) + iounmap(phy->ilb_base_addr); + return 0; } @@ -469,11 +491,6 @@ static int __init init_tis(void) if (rc) goto err_force; -#ifdef CONFIG_X86 - if (is_bsw()) - ilb_base_addr = ioremap(INTEL_LEGACY_BLK_BASE_ADDR, - ILB_REMAP_SIZE); -#endif rc = platform_driver_register(&tis_drv); if (rc) goto err_platform; @@ -492,10 +509,6 @@ static int __init init_tis(void) err_platform: if (force_pdev) platform_device_unregister(force_pdev); -#ifdef CONFIG_X86 - if (is_bsw()) - iounmap(ilb_base_addr); -#endif err_force: return rc; } @@ -505,10 +518,6 @@ static void __exit cleanup_tis(void) pnp_unregister_driver(&tis_pnp_driver); platform_driver_unregister(&tis_drv); -#ifdef CONFIG_X86 - if (is_bsw()) - iounmap(ilb_base_addr); -#endif if (force_pdev) platform_device_unregister(force_pdev); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-11-21 22:39 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-11-21 22:39 [PATCH v4 0/2] ] Fix corner cases with disabling CLKRUN in tpm_tis Azhar Shaikh 2017-11-21 22:39 ` Azhar Shaikh 2017-11-21 22:39 ` [PATCH v4 1/2] tpm: Keep CLKRUN enabled throughout the duration of transmit_cmd() Azhar Shaikh 2017-11-21 22:39 ` Azhar Shaikh 2017-11-22 19:57 ` Shaikh, Azhar 2017-11-22 19:57 ` Shaikh, Azhar 2017-11-22 19:57 ` Shaikh, Azhar 2017-11-21 22:39 ` Azhar Shaikh [this message] 2017-11-21 22:39 ` [PATCH v4 2/2] tpm_tis: Move ilb_base_addr to tpm_tis_tcg_phy Azhar Shaikh
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