From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 20 Jan 2016 14:01:31 -0300
Subject: Linux-libre 4.4-gnu
---
drivers/char/agp/uninorth-agp.c | 16 ++-
drivers/char/efirtc.c | 13 +-
drivers/char/hpet.c | 25 +---
drivers/char/hw_random/Kconfig | 24 +++-
drivers/char/hw_random/Makefile | 2 +
drivers/char/hw_random/core.c | 2 +-
drivers/char/hw_random/exynos-rng.c | 58 ++++++--
drivers/char/hw_random/mxc-rnga.c | 14 +-
drivers/char/hw_random/octeon-rng.c | 12 +-
drivers/char/hw_random/pasemi-rng.c | 1 +
drivers/char/hw_random/ppc4xx-rng.c | 1 +
drivers/char/hw_random/st-rng.c | 151 +++++++++++++++++++++
drivers/char/hw_random/stm32-rng.c | 202 ++++++++++++++++++++++++++++
drivers/char/ipmi/ipmi_si_intf.c | 90 ++++++++-----
drivers/char/ipmi/ipmi_ssif.c | 9 +-
drivers/char/ipmi/ipmi_watchdog.c | 8 +-
drivers/char/pcmcia/synclink_cs.c | 9 --
drivers/char/snsc.c | 5 +-
drivers/char/tpm/st33zp24/Kconfig | 2 +-
drivers/char/tpm/st33zp24/i2c.c | 1 -
drivers/char/tpm/st33zp24/spi.c | 1 -
drivers/char/tpm/tpm-chip.c | 28 ++--
drivers/char/tpm/tpm-interface.c | 76 +++++++++++
drivers/char/tpm/tpm.h | 134 +++++++++++++++++--
drivers/char/tpm/tpm2-cmd.c | 255 +++++++++++++++++++++++++++++++++++-
drivers/char/tpm/tpm_crb.c | 39 +++---
drivers/char/tpm/tpm_eventlog.c | 78 +++++++----
drivers/char/tpm/tpm_eventlog.h | 6 +
drivers/char/tpm/tpm_i2c_atmel.c | 1 -
drivers/char/tpm/tpm_i2c_infineon.c | 1 -
drivers/char/tpm/tpm_i2c_nuvoton.c | 1 -
drivers/char/tpm/tpm_ibmvtpm.c | 2 +-
drivers/char/tpm/tpm_of.c | 9 +-
drivers/char/tpm/tpm_ppi.c | 34 ++---
drivers/char/tpm/tpm_tis.c | 200 +++++++++++++++++++++++-----
35 files changed, 1258 insertions(+), 252 deletions(-)
create mode 100644 drivers/char/hw_random/st-rng.c
create mode 100644 drivers/char/hw_random/stm32-rng.c
(limited to 'drivers/char')
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index a56ee9bed..057554412 100644
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -361,6 +361,10 @@ static int agp_uninorth_resume(struct pci_dev *pdev)
}
#endif /* CONFIG_PM */
+static struct {
+ struct page **pages_arr;
+} uninorth_priv;
+
static int uninorth_create_gatt_table(struct agp_bridge_data *bridge)
{
char *table;
@@ -371,7 +375,6 @@ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge)
int i;
void *temp;
struct page *page;
- struct page **pages;
/* We can't handle 2 level gatt's */
if (bridge->driver->size_type == LVL2_APER_SIZE)
@@ -400,8 +403,8 @@ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge)
if (table == NULL)
return -ENOMEM;
- pages = kmalloc((1 << page_order) * sizeof(struct page*), GFP_KERNEL);
- if (pages == NULL)
+ uninorth_priv.pages_arr = kmalloc((1 << page_order) * sizeof(struct page*), GFP_KERNEL);
+ if (uninorth_priv.pages_arr == NULL)
goto enomem;
table_end = table + ((PAGE_SIZE * (1 << page_order)) - 1);
@@ -409,14 +412,14 @@ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge)
for (page = virt_to_page(table), i = 0; page <= virt_to_page(table_end);
page++, i++) {
SetPageReserved(page);
- pages[i] = page;
+ uninorth_priv.pages_arr[i] = page;
}
bridge->gatt_table_real = (u32 *) table;
/* Need to clear out any dirty data still sitting in caches */
flush_dcache_range((unsigned long)table,
(unsigned long)table_end + 1);
- bridge->gatt_table = vmap(pages, (1 << page_order), 0, PAGE_KERNEL_NCG);
+ bridge->gatt_table = vmap(uninorth_priv.pages_arr, (1 << page_order), 0, PAGE_KERNEL_NCG);
if (bridge->gatt_table == NULL)
goto enomem;
@@ -434,7 +437,7 @@ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge)
return 0;
enomem:
- kfree(pages);
+ kfree(uninorth_priv.pages_arr);
if (table)
free_pages((unsigned long)table, page_order);
return -ENOMEM;
@@ -456,6 +459,7 @@ static int uninorth_free_gatt_table(struct agp_bridge_data *bridge)
*/
vunmap(bridge->gatt_table);
+ kfree(uninorth_priv.pages_arr);
table = (char *) bridge->gatt_table_real;
table_end = table + ((PAGE_SIZE * (1 << page_order)) - 1);
diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c
index e39e7402e..dc62568b7 100644
--- a/drivers/char/efirtc.c
+++ b/drivers/char/efirtc.c
@@ -30,7 +30,6 @@
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/miscdevice.h>
-#include <linux/module.h>
#include <linux/init.h>
#include <linux/rtc.h>
#include <linux/proc_fs.h>
@@ -395,14 +394,8 @@ efi_rtc_init(void)
}
return 0;
}
+device_initcall(efi_rtc_init);
-static void __exit
-efi_rtc_exit(void)
-{
- /* not yet used */
-}
-
-module_init(efi_rtc_init);
-module_exit(efi_rtc_exit);
-
+/*
MODULE_LICENSE("GPL");
+*/
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 5c0baa9ff..240b6cf1d 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -12,7 +12,6 @@
*/
#include <linux/interrupt.h>
-#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/miscdevice.h>
@@ -1043,24 +1042,16 @@ static int hpet_acpi_add(struct acpi_device *device)
return hpet_alloc(&data);
}
-static int hpet_acpi_remove(struct acpi_device *device)
-{
- /* XXX need to unregister clocksource, dealloc mem, etc */
- return -EINVAL;
-}
-
static const struct acpi_device_id hpet_device_ids[] = {
{"PNP0103", 0},
{"", 0},
};
-MODULE_DEVICE_TABLE(acpi, hpet_device_ids);
static struct acpi_driver hpet_acpi_driver = {
.name = "hpet",
.ids = hpet_device_ids,
.ops = {
.add = hpet_acpi_add,
- .remove = hpet_acpi_remove,
},
};
@@ -1086,19 +1077,9 @@ static int __init hpet_init(void)
return 0;
}
+device_initcall(hpet_init);
-static void __exit hpet_exit(void)
-{
- acpi_bus_unregister_driver(&hpet_acpi_driver);
-
- if (sysctl_header)
- unregister_sysctl_table(sysctl_header);
- misc_deregister(&hpet_misc);
-
- return;
-}
-
-module_init(hpet_init);
-module_exit(hpet_exit);
+/*
MODULE_AUTHOR("Bob Picco <Robert.Picco@hp.com>");
MODULE_LICENSE("GPL");
+*/
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index f48cf11c6..dbf227194 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -10,7 +10,7 @@ menuconfig HW_RANDOM
To compile this driver as a module, choose M here: the
module will be called rng-core. This provides a device
- that's usually called /dev/hw_random, and which exposes one
+ that's usually called /dev/hwrng, and which exposes one
of possibly several hardware random number generators.
These hardware random number generators do not feed directly
@@ -346,6 +346,16 @@ config HW_RANDOM_MSM
If unsure, say Y.
+config HW_RANDOM_ST
+ tristate "ST Microelectronics HW Random Number Generator support"
+ depends on HW_RANDOM && ARCH_STI
+ ---help---
+ This driver provides kernel-side support for the Random Number
+ Generator hardware found on STi series of SoCs.
+
+ To compile this driver as a module, choose M here: the
+ module will be called st-rng.
+
config HW_RANDOM_XGENE
tristate "APM X-Gene True Random Number Generator (TRNG) support"
depends on HW_RANDOM && ARCH_XGENE
@@ -359,6 +369,18 @@ config HW_RANDOM_XGENE
If unsure, say Y.
+config HW_RANDOM_STM32
+ tristate "STMicroelectronics STM32 random number generator"
+ depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST)
+ help
+ This driver provides kernel-side support for the Random Number
+ Generator hardware found on STM32 microcontrollers.
+
+ To compile this driver as a module, choose M here: the
+ module will be called stm32-rng.
+
+ If unsure, say N.
+
endif # HW_RANDOM
config UML_RANDOM
diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile
index 055bb0151..5ad397635 100644
--- a/drivers/char/hw_random/Makefile
+++ b/drivers/char/hw_random/Makefile
@@ -30,4 +30,6 @@ obj-$(CONFIG_HW_RANDOM_TPM) += tpm-rng.o
obj-$(CONFIG_HW_RANDOM_BCM2835) += bcm2835-rng.o
obj-$(CONFIG_HW_RANDOM_IPROC_RNG200) += iproc-rng200.o
obj-$(CONFIG_HW_RANDOM_MSM) += msm-rng.o
+obj-$(CONFIG_HW_RANDOM_ST) += st-rng.o
obj-$(CONFIG_HW_RANDOM_XGENE) += xgene-rng.o
+obj-$(CONFIG_HW_RANDOM_STM32) += stm32-rng.o
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 5643b65ce..6f497aa1b 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -323,7 +323,7 @@ static ssize_t hwrng_attr_current_store(struct device *dev,
return -ERESTARTSYS;
err = -ENODEV;
list_for_each_entry(rng, &rng_list, list) {
- if (strcmp(rng->name, buf) == 0) {
+ if (sysfs_streq(rng->name, buf)) {
err = 0;
if (rng != current_rng)
err = set_current_rng(rng);
diff --git a/drivers/char/hw_random/exynos-rng.c b/drivers/char/hw_random/exynos-rng.c
index dc4701fd8..30cf46231 100644
--- a/drivers/char/hw_random/exynos-rng.c
+++ b/drivers/char/hw_random/exynos-rng.c
@@ -53,15 +53,11 @@ static void exynos_rng_writel(struct exynos_rng *rng, u32 val, u32 offset)
__raw_writel(val, rng->mem + offset);
}
-static int exynos_init(struct hwrng *rng)
+static int exynos_rng_configure(struct exynos_rng *exynos_rng)
{
- struct exynos_rng *exynos_rng = container_of(rng,
- struct exynos_rng, rng);
int i;
int ret = 0;
- pm_runtime_get_sync(exynos_rng->dev);
-
for (i = 0 ; i < 5 ; i++)
exynos_rng_writel(exynos_rng, jiffies,
EXYNOS_PRNG_SEED_OFFSET + 4*i);
@@ -70,6 +66,17 @@ static int exynos_init(struct hwrng *rng)
& SEED_SETTING_DONE))
ret = -EIO;
+ return ret;
+}
+
+static int exynos_init(struct hwrng *rng)
+{
+ struct exynos_rng *exynos_rng = container_of(rng,
+ struct exynos_rng, rng);
+ int ret = 0;
+
+ pm_runtime_get_sync(exynos_rng->dev);
+ ret = exynos_rng_configure(exynos_rng);
pm_runtime_put_noidle(exynos_rng->dev);
return ret;
@@ -81,21 +88,24 @@ static int exynos_read(struct hwrng *rng, void *buf,
struct exynos_rng *exynos_rng = container_of(rng,
struct exynos_rng, rng);
u32 *data = buf;
+ int retry = 100;
pm_runtime_get_sync(exynos_rng->dev);
exynos_rng_writel(exynos_rng, PRNG_START, 0);
while (!(exynos_rng_readl(exynos_rng,
- EXYNOS_PRNG_STATUS_OFFSET) & PRNG_DONE))
+ EXYNOS_PRNG_STATUS_OFFSET) & PRNG_DONE) && --retry)
cpu_relax();
+ if (!retry)
+ return -ETIMEDOUT;
exynos_rng_writel(exynos_rng, PRNG_DONE, EXYNOS_PRNG_STATUS_OFFSET);
*data = exynos_rng_readl(exynos_rng, EXYNOS_PRNG_OUT1_OFFSET);
pm_runtime_mark_last_busy(exynos_rng->dev);
- pm_runtime_autosuspend(exynos_rng->dev);
+ pm_runtime_put_sync_autosuspend(exynos_rng->dev);
return 4;
}
@@ -152,15 +162,45 @@ static int exynos_rng_runtime_resume(struct device *dev)
return clk_prepare_enable(exynos_rng->clk);
}
+
+static int exynos_rng_suspend(struct device *dev)
+{
+ return pm_runtime_force_suspend(dev);
+}
+
+static int exynos_rng_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos_rng *exynos_rng = platform_get_drvdata(pdev);
+ int ret;
+
+ ret = pm_runtime_force_resume(dev);
+ if (ret)
+ return ret;
+
+ return exynos_rng_configure(exynos_rng);
+}
#endif
-static UNIVERSAL_DEV_PM_OPS(exynos_rng_pm_ops, exynos_rng_runtime_suspend,
- exynos_rng_runtime_resume, NULL);
+static const struct dev_pm_ops exynos_rng_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(exynos_rng_suspend, exynos_rng_resume)
+ SET_RUNTIME_PM_OPS(exynos_rng_runtime_suspend,
+ exynos_rng_runtime_resume, NULL)
+};
+
+static const struct of_device_id exynos_rng_dt_match[] = {
+ {
+ .compatible = "samsung,exynos4-rng",
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, exynos_rng_dt_match);
static struct platform_driver exynos_rng_driver = {
.driver = {
.name = "exynos-rng",
.pm = &exynos_rng_pm_ops,
+ .of_match_table = exynos_rng_dt_match,
},
.probe = exynos_rng_probe,
};
diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c
index 6cbb72ec6..467362262 100644
--- a/drivers/char/hw_random/mxc-rnga.c
+++ b/drivers/char/hw_random/mxc-rnga.c
@@ -141,12 +141,11 @@ static void mxc_rnga_cleanup(struct hwrng *rng)
static int __init mxc_rnga_probe(struct platform_device *pdev)
{
- int err = -ENODEV;
+ int err;
struct resource *res;
struct mxc_rng *mxc_rng;
- mxc_rng = devm_kzalloc(&pdev->dev, sizeof(struct mxc_rng),
- GFP_KERNEL);
+ mxc_rng = devm_kzalloc(&pdev->dev, sizeof(*mxc_rng), GFP_KERNEL);
if (!mxc_rng)
return -ENOMEM;
@@ -160,13 +159,12 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
mxc_rng->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(mxc_rng->clk)) {
dev_err(&pdev->dev, "Could not get rng_clk!\n");
- err = PTR_ERR(mxc_rng->clk);
- goto out;
+ return PTR_ERR(mxc_rng->clk);
}
err = clk_prepare_enable(mxc_rng->clk);
if (err)
- goto out;
+ return err;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mxc_rng->mem = devm_ioremap_resource(&pdev->dev, res);
@@ -181,14 +179,10 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
goto err_ioremap;
}
- dev_info(&pdev->dev, "MXC RNGA Registered.\n");
-
return 0;
err_ioremap:
clk_disable_unprepare(mxc_rng->clk);
-
-out:
return err;
}
diff --git a/drivers/char/hw_random/octeon-rng.c b/drivers/char/hw_random/octeon-rng.c
index 6234a4a19..8c78aa090 100644
--- a/drivers/char/hw_random/octeon-rng.c
+++ b/drivers/char/hw_random/octeon-rng.c
@@ -96,7 +96,7 @@ static int octeon_rng_probe(struct platform_device *pdev)
rng->ops = ops;
platform_set_drvdata(pdev, &rng->ops);
- ret = hwrng_register(&rng->ops);
+ ret = devm_hwrng_register(&pdev->dev, &rng->ops);
if (ret)
return -ENOENT;
@@ -105,21 +105,11 @@ static int octeon_rng_probe(struct platform_device *pdev)
return 0;
}
-static int octeon_rng_remove(struct platform_device *pdev)
-{
- struct hwrng *rng = platform_get_drvdata(pdev);
-
- hwrng_unregister(rng);
-
- return 0;
-}
-
static struct platform_driver octeon_rng_driver = {
.driver = {
.name = "octeon_rng",
},
.probe = octeon_rng_probe,
- .remove = octeon_rng_remove,
};
module_platform_driver(octeon_rng_driver);
diff --git a/drivers/char/hw_random/pasemi-rng.c b/drivers/char/hw_random/pasemi-rng.c
index 51cb1d5cc..699b7259f 100644
--- a/drivers/char/hw_random/pasemi-rng.c
+++ b/drivers/char/hw_random/pasemi-rng.c
@@ -138,6 +138,7 @@ static const struct of_device_id rng_match[] = {
{ .compatible = "pasemi,pwrficient-rng", },
{ },
};
+MODULE_DEVICE_TABLE(of, rng_match);
static struct platform_driver rng_driver = {
.driver = {
diff --git a/drivers/char/hw_random/ppc4xx-rng.c b/drivers/char/hw_random/ppc4xx-rng.c
index b2cfda0fa..c0db4387d 100644
--- a/drivers/char/hw_random/ppc4xx-rng.c
+++ b/drivers/char/hw_random/ppc4xx-rng.c
@@ -129,6 +129,7 @@ static const struct of_device_id ppc4xx_rng_match[] = {
{ .compatible = "amcc,ppc440epx-rng", },
{},
};
+MODULE_DEVICE_TABLE(of, ppc4xx_rng_match);
static struct platform_driver ppc4xx_rng_driver = {
.driver = {
diff --git a/drivers/char/hw_random/st-rng.c b/drivers/char/hw_random/st-rng.c
new file mode 100644
index 000000000..1d35363d2
--- /dev/null
+++ b/drivers/char/hw_random/st-rng.c
@@ -0,0 +1,151 @@
+/*
+ * ST Random Number Generator Driver ST's Platforms
+ *
+ * Author: Pankaj Dev: <pankaj.dev@st.com>
+ * Lee Jones <lee.jones@linaro.org>
+ *
+ * Copyright (C) 2015 STMicroelectronics (R&D) Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/hw_random.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+/* Registers */
+#define ST_RNG_STATUS_REG 0x20
+#define ST_RNG_DATA_REG 0x24
+
+/* Registers fields */
+#define ST_RNG_STATUS_BAD_SEQUENCE BIT(0)
+#define ST_RNG_STATUS_BAD_ALTERNANCE BIT(1)
+#define ST_RNG_STATUS_FIFO_FULL BIT(5)
+
+#define ST_RNG_SAMPLE_SIZE 2 /* 2 Byte (16bit) samples */
+#define ST_RNG_FIFO_DEPTH 4
+#define ST_RNG_FIFO_SIZE (ST_RNG_FIFO_DEPTH * ST_RNG_SAMPLE_SIZE)
+
+/*
+ * Samples are documented to be available every 0.667us, so in theory
+ * the 4 sample deep FIFO should take 2.668us to fill. However, during
+ * thorough testing, it became apparent that filling the FIFO actually
+ * takes closer to 12us. We then multiply by 2 in order to account for
+ * the lack of udelay()'s reliability, suggested by Russell King.
+ */
+#define ST_RNG_FILL_FIFO_TIMEOUT (12 * 2)
+
+struct st_rng_data {
+ void __iomem *base;
+ struct clk *clk;
+ struct hwrng ops;
+};
+
+static int st_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
+{
+ struct st_rng_data *ddata = (struct st_rng_data *)rng->priv;
+ u32 status;
+ int i;
+
+ if (max < sizeof(u16))
+ return -EINVAL;
+
+ /* Wait until FIFO is full - max 4uS*/
+ for (i = 0; i < ST_RNG_FILL_FIFO_TIMEOUT; i++) {
+ status = readl_relaxed(ddata->base + ST_RNG_STATUS_REG);
+ if (status & ST_RNG_STATUS_FIFO_FULL)
+ break;
+ udelay(1);
+ }
+
+ if (i == ST_RNG_FILL_FIFO_TIMEOUT)
+ return 0;
+
+ for (i = 0; i < ST_RNG_FIFO_SIZE && i < max; i += 2)
+ *(u16 *)(data + i) =
+ readl_relaxed(ddata->base + ST_RNG_DATA_REG);
+
+ return i; /* No of bytes read */
+}
+
+static int st_rng_probe(struct platform_device *pdev)
+{
+ struct st_rng_data *ddata;
+ struct resource *res;
+ struct clk *clk;
+ void __iomem *base;
+ int ret;
+
+ ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
+ if (!ddata)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ return ret;
+
+ ddata->ops.priv = (unsigned long)ddata;
+ ddata->ops.read = st_rng_read;
+ ddata->ops.name = pdev->name;
+ ddata->base = base;
+ ddata->clk = clk;
+
+ dev_set_drvdata(&pdev->dev, ddata);
+
+ ret = hwrng_register(&ddata->ops);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register HW RNG\n");
+ return ret;
+ }
+
+ dev_info(&pdev->dev, "Successfully registered HW RNG\n");
+
+ return 0;
+}
+
+static int st_rng_remove(struct platform_device *pdev)
+{
+ struct st_rng_data *ddata = dev_get_drvdata(&pdev->dev);
+
+ hwrng_unregister(&ddata->ops);
+
+ clk_disable_unprepare(ddata->clk);
+
+ return 0;
+}
+
+static const struct of_device_id st_rng_match[] = {
+ { .compatible = "st,rng" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, st_rng_match);
+
+static struct platform_driver st_rng_driver = {
+ .driver = {
+ .name = "st-hwrandom",
+ .of_match_table = of_match_ptr(st_rng_match),
+ },
+ .probe = st_rng_probe,
+ .remove = st_rng_remove
+};
+
+module_platform_driver(st_rng_driver);
+
+MODULE_AUTHOR("Pankaj Dev <pankaj.dev@st.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c
new file mode 100644
index 000000000..92a810648
--- /dev/null
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -0,0 +1,202 @@
+/*
+ * Copyright (c) 2015, Daniel Thompson
+ *
+ * This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/hw_random.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+
+#define RNG_CR 0x00
+#define RNG_CR_RNGEN BIT(2)
+
+#define RNG_SR 0x04
+#define RNG_SR_SEIS BIT(6)
+#define RNG_SR_CEIS BIT(5)
+#define RNG_SR_DRDY BIT(0)
+
+#define RNG_DR 0x08
+
+/*
+ * It takes 40 cycles @ 48MHz to generate each random number (e.g. <1us).
+ * At the time of writing STM32 parts max out at ~200MHz meaning a timeout
+ * of 500 leaves us a very comfortable margin for error. The loop to which
+ * the timeout applies takes at least 4 instructions per iteration so the
+ * timeout is enough to take us up to multi-GHz parts!
+ */
+#define RNG_TIMEOUT 500
+
+struct stm32_rng_private {
+ struct hwrng rng;
+ void __iomem *base;
+ struct clk *clk;
+};
+
+static int stm32_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
+{
+ struct stm32_rng_private *priv =
+ container_of(rng, struct stm32_rng_private, rng);
+ u32 sr;
+ int retval = 0;
+
+ pm_runtime_get_sync((struct device *) priv->rng.priv);
+
+ while (max > sizeof(u32)) {
+ sr = readl_relaxed(priv->base + RNG_SR);
+ if (!sr && wait) {
+ unsigned int timeout = RNG_TIMEOUT;
+
+ do {
+ cpu_relax();
+ sr = readl_relaxed(priv->base + RNG_SR);
+ } while (!sr && --timeout);
+ }
+
+ /* If error detected or data not ready... */
+ if (sr != RNG_SR_DRDY)
+ break;
+
+ *(u32 *)data = readl_relaxed(priv->base + RNG_DR);
+
+ retval += sizeof(u32);
+ data += sizeof(u32);
+ max -= sizeof(u32);
+ }
+
+ if (WARN_ONCE(sr & (RNG_SR_SEIS | RNG_SR_CEIS),
+ "bad RNG status - %x\n", sr))
+ writel_relaxed(0, priv->base + RNG_SR);
+
+ pm_runtime_mark_last_busy((struct device *) priv->rng.priv);
+ pm_runtime_put_sync_autosuspend((struct device *) priv->rng.priv);
+
+ return retval || !wait ? retval : -EIO;
+}
+
+static int stm32_rng_init(struct hwrng *rng)
+{
+ struct stm32_rng_private *priv =
+ container_of(rng, struct stm32_rng_private, rng);
+ int err;
+
+ err = clk_prepare_enable(priv->clk);
+ if (err)
+ return err;
+
+ writel_relaxed(RNG_CR_RNGEN, priv->base + RNG_CR);
+
+ /* clear error indicators */
+ writel_relaxed(0, priv->base + RNG_SR);
+
+ return 0;
+}
+
+static void stm32_rng_cleanup(struct hwrng *rng)
+{
+ struct stm32_rng_private *priv =
+ container_of(rng, struct stm32_rng_private, rng);
+
+ writel_relaxed(0, priv->base + RNG_CR);
+ clk_disable_unprepare(priv->clk);
+}
+
+static int stm32_rng_probe(struct platform_device *ofdev)
+{
+ struct device *dev = &ofdev->dev;
+ struct device_node *np = ofdev->dev.of_node;
+ struct stm32_rng_private *priv;
+ struct resource res;
+ int err;
+
+ priv = devm_kzalloc(dev, sizeof(struct stm32_rng_private), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ err = of_address_to_resource(np, 0, &res);
+ if (err)
+ return err;
+
+ priv->base = devm_ioremap_resource(dev, &res);
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
+
+ priv->clk = devm_clk_get(&ofdev->dev, NULL);
+ if (IS_ERR(priv->clk))
+ return PTR_ERR(priv->clk);
+
+ dev_set_drvdata(dev, priv);
+
+ priv->rng.name = dev_driver_string(dev),
+#ifndef CONFIG_PM
+ priv->rng.init = stm32_rng_init,
+ priv->rng.cleanup = stm32_rng_cleanup,
+#endif
+ priv->rng.read = stm32_rng_read,
+ priv->rng.priv = (unsigned long) dev;
+
+ pm_runtime_set_autosuspend_delay(dev, 100);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_enable(dev);
+
+ return devm_hwrng_register(dev, &priv->rng);
+}
+
+#ifdef CONFIG_PM
+static int stm32_rng_runtime_suspend(struct device *dev)
+{
+ struct stm32_rng_private *priv = dev_get_drvdata(dev);
+
+ stm32_rng_cleanup(&priv->rng);
+
+ return 0;
+}
+
+static int stm32_rng_runtime_resume(struct device *dev)
+{
+ struct stm32_rng_private *priv = dev_get_drvdata(dev);
+
+ return stm32_rng_init(&priv->rng);
+}
+#endif
+
+static UNIVERSAL_DEV_PM_OPS(stm32_rng_pm_ops, stm32_rng_runtime_suspend,
+ stm32_rng_runtime_resume, NULL);
+
+static const struct of_device_id stm32_rng_match[] = {
+ {
+ .compatible = "st,stm32-rng",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, stm32_rng_match);
+
+static struct platform_driver stm32_rng_driver = {
+ .driver = {
+ .name = "stm32-rng",
+ .pm = &stm32_rng_pm_ops,
+ .of_match_table = stm32_rng_match,
+ },
+ .probe = stm32_rng_probe,
+};
+
+module_platform_driver(stm32_rng_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Daniel Thompson <daniel.thompson@linaro.org>");
+MODULE_DESCRIPTION("STMicroelectronics STM32 RNG device driver");
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 654f6f36a..4cc72fa01 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -412,18 +412,42 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info)
return rv;
}
-static void start_check_enables(struct smi_info *smi_info)
+static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val)
+{
+ smi_info->last_timeout_jiffies = jiffies;
+ mod_timer(&smi_info->si_timer, new_val);
+ smi_info->timer_running = true;
+}
+
+/*
+ * Start a new message and (re)start the timer and thread.
+ */
+static void start_new_msg(struct smi_info *smi_info, unsigned char *msg,
+ unsigned int size)
+{
+ smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES);
+
+ if (smi_info->thread)
+ wake_up_process(smi_info->thread);
+
+ smi_info->handlers->start_transaction(smi_info->si_sm, msg, size);
+}
+
+static void start_check_enables(struct smi_info *smi_info, bool start_timer)
{
unsigned char msg[2];
msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD;
- smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2);
+ if (start_timer)
+ start_new_msg(smi_info, msg, 2);
+ else
+ smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2);
smi_info->si_state = SI_CHECKING_ENABLES;
}
-static void start_clear_flags(struct smi_info *smi_info)
+static void start_clear_flags(struct smi_info *smi_info, bool start_timer)
{
unsigned char msg[3];
@@ -432,7 +456,10 @@ static void start_clear_flags(struct smi_info *smi_info)
msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD;
msg[2] = WDT_PRE_TIMEOUT_INT;
- smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3);
+ if (start_timer)
+ start_new_msg(smi_info, msg, 3);
+ else
+ smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3);
smi_info->si_state = SI_CLEARING_FLAGS;
}
@@ -442,10 +469,8 @@ static void start_getting_msg_queue(struct smi_info *smi_info)
smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD;
smi_info->curr_msg->data_size = 2;
- smi_info->handlers->start_transaction(
- smi_info->si_sm,
- smi_info->curr_msg->data,
- smi_info->curr_msg->data_size);
+ start_new_msg(smi_info, smi_info->curr_msg->data,
+ smi_info->curr_msg->data_size);
smi_info->si_state = SI_GETTING_MESSAGES;
}
@@ -455,20 +480,11 @@ static void start_getting_events(struct smi_info *smi_info)
smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD;
smi_info->curr_msg->data_size = 2;
- smi_info->handlers->start_transaction(
- smi_info->si_sm,
- smi_info->curr_msg->data,
- smi_info->curr_msg->data_size);
+ start_new_msg(smi_info, smi_info->curr_msg->data,
+ smi_info->curr_msg->data_size);
smi_info->si_state = SI_GETTING_EVENTS;
}
-static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val)
-{
- smi_info->last_timeout_jiffies = jiffies;
- mod_timer(&smi_info->si_timer, new_val);
- smi_info->timer_running = true;
-}
-
/*
* When we have a situtaion where we run out of memory and cannot
* allocate messages, we just leave them in the BMC and run the system
@@ -478,11 +494,11 @@ static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val)
* Note that we cannot just use disable_irq(), since the interrupt may
* be shared.
*/
-static inline bool disable_si_irq(struct smi_info *smi_info)
+static inline bool disable_si_irq(struct smi_info *smi_info, bool start_timer)
{
if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
smi_info->interrupt_disabled = true;
- start_check_enables(smi_info);
+ start_check_enables(smi_info, start_timer);
return true;
}
return false;
@@ -492,7 +508,7 @@ static inline bool enable_si_irq(struct smi_info *smi_info)
{
if ((smi_info->irq) && (smi_info->interrupt_disabled)) {
smi_info->interrupt_disabled = false;
- start_check_enables(smi_info);
+ start_check_enables(smi_info, true);
return true;
}
return false;
@@ -510,7 +526,7 @@ static struct ipmi_smi_msg *alloc_msg_handle_irq(struct smi_info *smi_info)
msg = ipmi_alloc_smi_msg();
if (!msg) {
- if (!disable_si_irq(smi_info))
+ if (!disable_si_irq(smi_info, true))
smi_info->si_state = SI_NORMAL;
} else if (enable_si_irq(smi_info)) {
ipmi_free_smi_msg(msg);
@@ -526,7 +542,7 @@ static void handle_flags(struct smi_info *smi_info)
/* Watchdog pre-timeout */
smi_inc_stat(smi_info, watchdog_pretimeouts);
- start_clear_flags(smi_info);
+ start_clear_flags(smi_info, true);
smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT;
if (smi_info->intf)
ipmi_smi_watchdog_pretimeout(smi_info->intf);
@@ -879,8 +895,7 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info,
msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
msg[1] = IPMI_GET_MSG_FLAGS_CMD;
- smi_info->handlers->start_transaction(
- smi_info->si_sm, msg, 2);
+ start_new_msg(smi_info, msg, 2);
smi_info->si_state = SI_GETTING_FLAGS;
goto restart;
}
@@ -910,7 +925,7 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info,
* disable and messages disabled.
*/
if (smi_info->supports_event_msg_buff || smi_info->irq) {
- start_check_enables(smi_info);
+ start_check_enables(smi_info, true);
} else {
smi_info->curr_msg = alloc_msg_handle_irq(smi_info);
if (!smi_info->curr_msg)
@@ -920,6 +935,13 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info,
}
goto restart;
}
+
+ if (si_sm_result == SI_SM_IDLE && smi_info->timer_running) {
+ /* Ok it if fails, the timer will just go off. */
+ if (del_timer(&smi_info->si_timer))
+ smi_info->timer_running = false;
+ }
+
out:
return si_sm_result;
}
@@ -1208,14 +1230,14 @@ static int smi_start_processing(void *send_info,
new_smi->intf = intf;
- /* Try to claim any interrupts. */
- if (new_smi->irq_setup)
- new_smi->irq_setup(new_smi);
-
/* Set up the timer that drives the interface. */
setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi);
smi_mod_timer(new_smi, jiffies + SI_TIMEOUT_JIFFIES);
+ /* Try to claim any interrupts. */
+ if (new_smi->irq_setup)
+ new_smi->irq_setup(new_smi);
+
/*
* Check if the user forcefully enabled the daemon.
*/
@@ -2560,6 +2582,7 @@ static const struct of_device_id of_ipmi_match[] = {
.data = (void *)(unsigned long) SI_BT },
{},
};
+MODULE_DEVICE_TABLE(of, of_ipmi_match);
static int of_ipmi_probe(struct platform_device *dev)
{
@@ -2646,7 +2669,6 @@ static int of_ipmi_probe(struct platform_device *dev)
}
return 0;
}
-MODULE_DEVICE_TABLE(of, of_ipmi_match);
#else
#define of_ipmi_match NULL
static int of_ipmi_probe(struct platform_device *dev)
@@ -3613,7 +3635,7 @@ static int try_smi_init(struct smi_info *new_smi)
* Start clearing the flags before we enable interrupts or the
* timer to avoid racing with the timer.
*/
- start_clear_flags(new_smi);
+ start_clear_flags(new_smi, false);
/*
* IRQ is defined to be set when non-zero. req_events will
@@ -3908,7 +3930,7 @@ static void cleanup_one_si(struct smi_info *to_clean)
poll(to_clean);
schedule_timeout_uninterruptible(1);
}
- disable_si_irq(to_clean);
+ disable_si_irq(to_clean, false);
while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
poll(to_clean);
schedule_timeout_uninterruptible(1);
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 877205d22..90e624662 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -52,6 +52,7 @@
#include <linux/kthread.h>
#include <linux/acpi.h>
#include <linux/ctype.h>
+#include <linux/time64.h>
#define PFX "ipmi_ssif: "
#define DEVICE_NAME "ipmi_ssif"
@@ -1041,12 +1042,12 @@ static void sender(void *send_info,
start_next_msg(ssif_info, flags);
if (ssif_info->ssif_debug & SSIF_DEBUG_TIMING) {
- struct timeval t;
+ struct timespec64 t;
- do_gettimeofday(&t);
- pr_info("**Enqueue %02x %02x: %ld.%6.6ld\n",
+ ktime_get_real_ts64(&t);
+ pr_info("**Enqueue %02x %02x: %lld.%6.6ld\n",
msg->data[0], msg->data[1],
- (long) t.tv_sec, (long) t.tv_usec);
+ (long long) t.tv_sec, (long) t.tv_nsec / NSEC_PER_USEC);
}
}
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 0ac3bd1a5..096f0cef4 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -153,6 +153,9 @@ static int timeout = 10;
/* The pre-timeout is disabled by default. */
static int pretimeout;
+/* Default timeout to set on panic */
+static int panic_wdt_timeout = 255;
+
/* Default action is to reset the board on a timeout. */
static unsigned char action_val = WDOG_TIMEOUT_RESET;
@@ -293,6 +296,9 @@ MODULE_PARM_DESC(timeout, "Timeout value in seconds.");
module_param(pretimeout, timeout, 0644);
MODULE_PARM_DESC(pretimeout, "Pretimeout value in seconds.");
+module_param(panic_wdt_timeout, timeout, 0644);
+MODULE_PARM_DESC(timeout, "Timeout value on kernel panic in seconds.");
+
module_param_cb(action, ¶m_ops_str, action_op, 0644);
MODULE_PARM_DESC(action, "Timeout action. One of: "
"reset, none, power_cycle, power_off.");
@@ -1189,7 +1195,7 @@ static int wdog_panic_handler(struct notifier_block *this,
/* Make sure we do this only once. */
panic_event_handled = 1;
- timeout = 255;
+ timeout = panic_wdt_timeout;
pretimeout = 0;
panic_halt_ipmi_set_timeout();
}
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 7680d5213..45df4bf91 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -2507,15 +2507,6 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
printk("%s(%d):mgslpc_open(%s), old ref count = %d\n",
__FILE__, __LINE__, tty->driver->name, port->count);
- /* If port is closing, signal caller to try again */
- if (port->flags & ASYNC_CLOSING){
- wait_event_interruptible_tty(tty, port->close_wait,
- !(port->flags & ASYNC_CLOSING));
- retval = ((port->flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS);
- goto cleanup;
- }
-
port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
index 8a80ead8d..94006f9c2 100644
--- a/drivers/char/snsc.c
+++ b/drivers/char/snsc.c
@@ -19,7 +19,7 @@
#include <linux/sched.h>
#include <linux/device.h>
#include <linux/poll.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <asm/sn/io.h>
@@ -461,5 +461,4 @@ scdrv_init(void)
}
return 0;
}
-
-module_init(scdrv_init);
+device_initcall(scdrv_init);
diff --git a/drivers/char/tpm/st33zp24/Kconfig b/drivers/char/tpm/st33zp24/Kconfig
index 09cb72786..19c007461 100644
--- a/drivers/char/tpm/st33zp24/Kconfig
+++ b/drivers/char/tpm/st33zp24/Kconfig
@@ -1,6 +1,6 @@
config TCG_TIS_ST33ZP24
tristate "STMicroelectronics TPM Interface Specification 1.2 Interface"
- depends on GPIOLIB
+ depends on GPIOLIB || COMPILE_TEST
---help---
STMicroelectronics ST33ZP24 core driver. It implements the core
TPM1.2 logic and hooks into the TPM kernel APIs. Physical layers will
diff --git a/drivers/char/tpm/st33zp24/i2c.c b/drivers/char/tpm/st33zp24/i2c.c
index ad1ee180e..309d2767c 100644
--- a/drivers/char/tpm/st33zp24/i2c.c
+++ b/drivers/char/tpm/st33zp24/i2c.c
@@ -258,7 +258,6 @@ static SIMPLE_DEV_PM_OPS(st33zp24_i2c_ops, st33zp24_pm_suspend,
static struct i2c_driver st33zp24_i2c_driver = {
.driver = {
- .owner = THIS_MODULE,
.name = TPM_ST33_I2C,
.pm = &st33zp24_i2c_ops,
.of_match_table = of_match_ptr(of_st33zp24_i2c_match),
diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c
index f0184a1b0..f974c945c 100644
--- a/drivers/char/tpm/st33zp24/spi.c
+++ b/drivers/char/tpm/st33zp24/spi.c
@@ -381,7 +381,6 @@ static SIMPLE_DEV_PM_OPS(st33zp24_spi_ops, st33zp24_pm_suspend,
static struct spi_driver tpm_st33_spi_driver = {
.driver = {
- .owner = THIS_MODULE,
.name = TPM_ST33_SPI,
.pm = &st33zp24_spi_ops,
.of_match_table = of_match_ptr(of_st33zp24_spi_match),
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 1082d4bb0..45cc39aab 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -119,6 +119,9 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
chip->dev.class = tpm_class;
chip->dev.release = tpm_dev_release;
chip->dev.parent = chip->pdev;
+#ifdef CONFIG_ACPI
+ chip->dev.groups = chip->groups;
+#endif
if (chip->dev_num == 0)
chip->dev.devt = MKDEV(MISC_MAJOR, TPM_MINOR);
@@ -182,12 +185,6 @@ static int tpm1_chip_register(struct tpm_chip *chip)
if (rc)
return rc;
- rc = tpm_add_ppi(chip);
- if (rc) {
- tpm_sysfs_del_device(chip);
- return rc;
- }
-
chip->bios_dir = tpm_bios_log_setup(chip->devname);
return 0;
@@ -201,8 +198,6 @@ static void tpm1_chip_unregister(struct tpm_chip *chip)
if (chip->bios_dir)
tpm_bios_log_teardown(chip->bios_dir);
- tpm_remove_ppi(chip);
-
tpm_sysfs_del_device(chip);
}
@@ -225,17 +220,29 @@ int tpm_chip_register(struct tpm_chip *chip)
if (rc)
return rc;
+ tpm_add_ppi(chip);
+
rc = tpm_dev_add_device(chip);
if (rc)
goto out_err;
/* Make the chip available. */
spin_lock(&driver_lock);
- list_add_rcu(&chip->list, &tpm_chip_list);
+ list_add_tail_rcu(&chip->list, &tpm_chip_list);
spin_unlock(&driver_lock);
chip->flags |= TPM_CHIP_FLAG_REGISTERED;
+ if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) {
+ rc = __compat_only_sysfs_link_entry_to_kobj(&chip->pdev->kobj,
+ &chip->dev.kobj,
+ "ppi");
+ if (rc && rc != -ENOENT) {
+ tpm_chip_unregister(chip);
+ return rc;
+ }
+ }
+
return 0;
out_err:
tpm1_chip_unregister(chip);
@@ -263,6 +270,9 @@ void tpm_chip_unregister(struct tpm_chip *chip)
spin_unlock(&driver_lock);
synchronize_rcu();
+ if (!(chip->flags & TPM_CHIP_FLAG_TPM2))
+ sysfs_remove_link(&chip->pdev->kobj, "ppi");
+
tpm1_chip_unregister(chip);
tpm_dev_del_device(chip);
}
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index e85d3416d..c50637db3 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -665,6 +665,30 @@ int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
return rc;
}
+/**
+ * tpm_is_tpm2 - is the chip a TPM2 chip?
+ * @chip_num: tpm idx # or ANY
+ *
+ * Returns < 0 on error, and 1 or 0 on success depending whether the chip
+ * is a TPM2 chip.
+ */
+int tpm_is_tpm2(u32 chip_num)
+{
+ struct tpm_chip *chip;
+ int rc;
+
+ chip = tpm_chip_find_get(chip_num);
+ if (chip == NULL)
+ return -ENODEV;
+
+ rc = (chip->flags & TPM_CHIP_FLAG_TPM2) != 0;
+
+ tpm_chip_put(chip);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(tpm_is_tpm2);
+
/**
* tpm_pcr_read - read a pcr value
* @chip_num: tpm idx # or ANY
@@ -1021,6 +1045,58 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max)
}
EXPORT_SYMBOL_GPL(tpm_get_random);
+/**
+ * tpm_seal_trusted() - seal a trusted key
+ * @chip_num: A specific chip number for the request or TPM_ANY_NUM
+ * @options: authentication values and other options
+ * @payload: the key data in clear and encrypted form
+ *
+ * Returns < 0 on error and 0 on success. At the moment, only TPM 2.0 chips
+ * are supported.
+ */
+int tpm_seal_trusted(u32 chip_num, struct trusted_key_payload *payload,
+ struct trusted_key_options *options)
+{
+ struct tpm_chip *chip;
+ int rc;
+
+ chip = tpm_chip_find_get(chip_num);
+ if (chip == NULL || !(chip->flags & TPM_CHIP_FLAG_TPM2))
+ return -ENODEV;
+
+ rc = tpm2_seal_trusted(chip, payload, options);
+
+ tpm_chip_put(chip);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(tpm_seal_trusted);
+
+/**
+ * tpm_unseal_trusted() - unseal a trusted key
+ * @chip_num: A specific chip number for the request or TPM_ANY_NUM
+ * @options: authentication values and other options
+ * @payload: the key data in clear and encrypted form
+ *
+ * Returns < 0 on error and 0 on success. At the moment, only TPM 2.0 chips
+ * are supported.
+ */
+int tpm_unseal_trusted(u32 chip_num, struct trusted_key_payload *payload,
+ struct trusted_key_options *options)
+{
+ struct tpm_chip *chip;
+ int rc;
+
+ chip = tpm_chip_find_get(chip_num);
+ if (chip == NULL || !(chip->flags & TPM_CHIP_FLAG_TPM2))
+ return -ENODEV;
+
+ rc = tpm2_unseal_trusted(chip, payload, options);
+
+ tpm_chip_put(chip);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(tpm_unseal_trusted);
+
static int __init tpm_init(void)
{
int rc;
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index f8319a086..a4257a329 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -1,5 +1,6 @@
/*
* Copyright (C) 2004 IBM Corporation
+ * Copyright (C) 2015 Intel Corporation
*
* Authors:
* Leendert van Doorn <leendert@watson.ibm.com>
@@ -28,6 +29,7 @@
#include <linux/tpm.h>
#include <linux/acpi.h>
#include <linux/cdev.h>
+#include <linux/highmem.h>
enum tpm_const {
TPM_MINOR = 224, /* officially assigned */
@@ -88,6 +90,9 @@ enum tpm2_return_codes {
enum tpm2_algorithms {
TPM2_ALG_SHA1 = 0x0004,
+ TPM2_ALG_KEYEDHASH = 0x0008,
+ TPM2_ALG_SHA256 = 0x000B,
+ TPM2_ALG_NULL = 0x0010
};
enum tpm2_command_codes {
@@ -95,6 +100,10 @@ enum tpm2_command_codes {
TPM2_CC_SELF_TEST = 0x0143,
TPM2_CC_STARTUP = 0x0144,
TPM2_CC_SHUTDOWN = 0x0145,
+ TPM2_CC_CREATE = 0x0153,
+ TPM2_CC_LOAD = 0x0157,
+ TPM2_CC_UNSEAL = 0x015E,
+ TPM2_CC_FLUSH_CONTEXT = 0x0165,
TPM2_CC_GET_CAPABILITY = 0x017A,
TPM2_CC_GET_RANDOM = 0x017B,
TPM2_CC_PCR_READ = 0x017E,
@@ -115,6 +124,13 @@ enum tpm2_startup_types {
TPM2_SU_STATE = 0x0001,
};
+enum tpm2_start_method {
+ TPM2_START_ACPI = 2,
+ TPM2_START_FIFO = 6,
+ TPM2_START_CRB = 7,
+ TPM2_START_CRB_WITH_ACPI = 8,
+};
+
struct tpm_chip;
struct tpm_vendor_specific {
@@ -151,8 +167,7 @@ struct tpm_vendor_specific {
enum tpm_chip_flags {
TPM_CHIP_FLAG_REGISTERED = BIT(0),
- TPM_CHIP_FLAG_PPI = BIT(1),
- TPM_CHIP_FLAG_TPM2 = BIT(2),
+ TPM_CHIP_FLAG_TPM2 = BIT(1),
};
struct tpm_chip {
@@ -175,6 +190,8 @@ struct tpm_chip {
struct dentry **bios_dir;
#ifdef CONFIG_ACPI
+ const struct attribute_group *groups[2];
+ unsigned int groups_cnt;
acpi_handle acpi_dev_handle;
char ppi_version[TPM_PPI_VERSION_LEN + 1];
#endif /* CONFIG_ACPI */
@@ -182,7 +199,7 @@ struct tpm_chip {
struct list_head list;
};
-#define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor)
+#define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)
static inline void tpm_chip_put(struct tpm_chip *chip)
{
@@ -382,6 +399,101 @@ struct tpm_cmd_t {
tpm_cmd_params params;
} __packed;
+/* A string buffer type for constructing TPM commands. This is based on the
+ * ideas of string buffer code in security/keys/trusted.h but is heap based
+ * in order to keep the stack usage minimal.
+ */
+
+enum tpm_buf_flags {
+ TPM_BUF_OVERFLOW = BIT(0),
+};
+
+struct tpm_buf {
+ struct page *data_page;
+ unsigned int flags;
+ u8 *data;
+};
+
+static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
+{
+ struct tpm_input_header *head;
+
+ buf->data_page = alloc_page(GFP_HIGHUSER);
+ if (!buf->data_page)
+ return -ENOMEM;
+
+ buf->flags = 0;
+ buf->data = kmap(buf->data_page);
+
+ head = (struct tpm_input_header *) buf->data;
+
+ head->tag = cpu_to_be16(tag);
+ head->length = cpu_to_be32(sizeof(*head));
+ head->ordinal = cpu_to_be32(ordinal);
+
+ return 0;
+}
+
+static inline void tpm_buf_destroy(struct tpm_buf *buf)
+{
+ kunmap(buf->data_page);
+ __free_page(buf->data_page);
+}
+
+static inline u32 tpm_buf_length(struct tpm_buf *buf)
+{
+ struct tpm_input_header *head = (struct tpm_input_header *) buf->data;
+
+ return be32_to_cpu(head->length);
+}
+
+static inline u16 tpm_buf_tag(struct tpm_buf *buf)
+{
+ struct tpm_input_header *head = (struct tpm_input_header *) buf->data;
+
+ return be16_to_cpu(head->tag);
+}
+
+static inline void tpm_buf_append(struct tpm_buf *buf,
+ const unsigned char *new_data,
+ unsigned int new_len)
+{
+ struct tpm_input_header *head = (struct tpm_input_header *) buf->data;
+ u32 len = tpm_buf_length(buf);
+
+ /* Return silently if overflow has already happened. */
+ if (buf->flags & TPM_BUF_OVERFLOW)
+ return;
+
+ if ((len + new_len) > PAGE_SIZE) {
+ WARN(1, "tpm_buf: overflow\n");
+ buf->flags |= TPM_BUF_OVERFLOW;
+ return;
+ }
+
+ memcpy(&buf->data[len], new_data, new_len);
+ head->length = cpu_to_be32(len + new_len);
+}
+
+static inline void tpm_buf_append_u8(struct tpm_buf *buf, const u8 value)
+{
+ tpm_buf_append(buf, &value, 1);
+}
+
+static inline void tpm_buf_append_u16(struct tpm_buf *buf, const u16 value)
+{
+ __be16 value2 = cpu_to_be16(value);
+
+ tpm_buf_append(buf, (u8 *) &value2, 2);
+}
+
+static inline void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value)
+{
+ __be32 value2 = cpu_to_be32(value);
+
+ tpm_buf_append(buf, (u8 *) &value2, 4);
+}
+
extern struct class *tpm_class;
extern dev_t tpm_devt;
extern const struct file_operations tpm_fops;
@@ -412,15 +524,9 @@ void tpm_sysfs_del_device(struct tpm_chip *chip);
int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
#ifdef CONFIG_ACPI
-extern int tpm_add_ppi(struct tpm_chip *chip);
-extern void tpm_remove_ppi(struct tpm_chip *chip);
+extern void tpm_add_ppi(struct tpm_chip *chip);
#else
-static inline int tpm_add_ppi(struct tpm_chip *chip)
-{
- return 0;
-}
-
-static inline void tpm_remove_ppi(struct tpm_chip *chip)
+static inline void tpm_add_ppi(struct tpm_chip *chip)
{
}
#endif
@@ -428,6 +534,12 @@ static inline void tpm_remove_ppi(struct tpm_chip *chip)
int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash);
int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max);
+int tpm2_seal_trusted(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options);
+int tpm2_unseal_trusted(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options);
ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
u32 *value, const char *desc);
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 011909a9b..c12130485 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2014 Intel Corporation
+ * Copyright (C) 2014, 2015 Intel Corporation
*
* Authors:
* Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
@@ -16,6 +16,11 @@
*/
#include "tpm.h"
+#include <keys/trusted-type.h>
+
+enum tpm2_object_attributes {
+ TPM2_ATTR_USER_WITH_AUTH = BIT(6),
+};
struct tpm2_startup_in {
__be16 startup_type;
@@ -380,6 +385,254 @@ static const struct tpm_input_header tpm2_get_tpm_pt_header = {
.ordinal = cpu_to_be32(TPM2_CC_GET_CAPABILITY)
};
+/**
+ * Append TPMS_AUTH_COMMAND to the buffer. The buffer must be allocated with
+ * tpm_buf_alloc().
+ *
+ * @param buf: an allocated tpm_buf instance
+ * @param nonce: the session nonce, may be NULL if not used
+ * @param nonce_len: the session nonce length, may be 0 if not used
+ * @param attributes: the session attributes
+ * @param hmac: the session HMAC or password, may be NULL if not used
+ * @param hmac_len: the session HMAC or password length, maybe 0 if not used
+ */
+static void tpm2_buf_append_auth(struct tpm_buf *buf, u32 session_handle,
+ const u8 *nonce, u16 nonce_len,
+ u8 attributes,
+ const u8 *hmac, u16 hmac_len)
+{
+ tpm_buf_append_u32(buf, 9 + nonce_len + hmac_len);
+ tpm_buf_append_u32(buf, session_handle);
+ tpm_buf_append_u16(buf, nonce_len);
+
+ if (nonce && nonce_len)
+ tpm_buf_append(buf, nonce, nonce_len);
+
+ tpm_buf_append_u8(buf, attributes);
+ tpm_buf_append_u16(buf, hmac_len);
+
+ if (hmac && hmac_len)
+ tpm_buf_append(buf, hmac, hmac_len);
+}
+
+/**
+ * tpm2_seal_trusted() - seal a trusted key
+ * @chip_num: A specific chip number for the request or TPM_ANY_NUM
+ * @options: authentication values and other options
+ * @payload: the key data in clear and encrypted form
+ *
+ * Returns < 0 on error and 0 on success.
+ */
+int tpm2_seal_trusted(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options)
+{
+ unsigned int blob_len;
+ struct tpm_buf buf;
+ int rc;
+
+ rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_CREATE);
+ if (rc)
+ return rc;
+
+ tpm_buf_append_u32(&buf, options->keyhandle);
+ tpm2_buf_append_auth(&buf, TPM2_RS_PW,
+ NULL /* nonce */, 0,
+ 0 /* session_attributes */,
+ options->keyauth /* hmac */,
+ TPM_DIGEST_SIZE);
+
+ /* sensitive */
+ tpm_buf_append_u16(&buf, 4 + TPM_DIGEST_SIZE + payload->key_len + 1);
+
+ tpm_buf_append_u16(&buf, TPM_DIGEST_SIZE);
+ tpm_buf_append(&buf, options->blobauth, TPM_DIGEST_SIZE);
+ tpm_buf_append_u16(&buf, payload->key_len + 1);
+ tpm_buf_append(&buf, payload->key, payload->key_len);
+ tpm_buf_append_u8(&buf, payload->migratable);
+
+ /* public */
+ tpm_buf_append_u16(&buf, 14);
+
+ tpm_buf_append_u16(&buf, TPM2_ALG_KEYEDHASH);
+ tpm_buf_append_u16(&buf, TPM2_ALG_SHA256);
+ tpm_buf_append_u32(&buf, TPM2_ATTR_USER_WITH_AUTH);
+ tpm_buf_append_u16(&buf, 0); /* policy digest size */
+ tpm_buf_append_u16(&buf, TPM2_ALG_NULL);
+ tpm_buf_append_u16(&buf, 0);
+
+ /* outside info */
+ tpm_buf_append_u16(&buf, 0);
+
+ /* creation PCR */
+ tpm_buf_append_u32(&buf, 0);
+
+ if (buf.flags & TPM_BUF_OVERFLOW) {
+ rc = -E2BIG;
+ goto out;
+ }
+
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "sealing data");
+ if (rc)
+ goto out;
+
+ blob_len = be32_to_cpup((__be32 *) &buf.data[TPM_HEADER_SIZE]);
+ if (blob_len > MAX_BLOB_SIZE) {
+ rc = -E2BIG;
+ goto out;
+ }
+
+ memcpy(payload->blob, &buf.data[TPM_HEADER_SIZE + 4], blob_len);
+ payload->blob_len = blob_len;
+
+out:
+ tpm_buf_destroy(&buf);
+
+ if (rc > 0)
+ rc = -EPERM;
+
+ return rc;
+}
+
+static int tpm2_load(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options,
+ u32 *blob_handle)
+{
+ struct tpm_buf buf;
+ unsigned int private_len;
+ unsigned int public_len;
+ unsigned int blob_len;
+ int rc;
+
+ private_len = be16_to_cpup((__be16 *) &payload->blob[0]);
+ if (private_len > (payload->blob_len - 2))
+ return -E2BIG;
+
+ public_len = be16_to_cpup((__be16 *) &payload->blob[2 + private_len]);
+ blob_len = private_len + public_len + 4;
+ if (blob_len > payload->blob_len)
+ return -E2BIG;
+
+ rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_LOAD);
+ if (rc)
+ return rc;
+
+ tpm_buf_append_u32(&buf, options->keyhandle);
+ tpm2_buf_append_auth(&buf, TPM2_RS_PW,
+ NULL /* nonce */, 0,
+ 0 /* session_attributes */,
+ options->keyauth /* hmac */,
+ TPM_DIGEST_SIZE);
+
+ tpm_buf_append(&buf, payload->blob, blob_len);
+
+ if (buf.flags & TPM_BUF_OVERFLOW) {
+ rc = -E2BIG;
+ goto out;
+ }
+
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "loading blob");
+ if (!rc)
+ *blob_handle = be32_to_cpup(
+ (__be32 *) &buf.data[TPM_HEADER_SIZE]);
+
+out:
+ tpm_buf_destroy(&buf);
+
+ if (rc > 0)
+ rc = -EPERM;
+
+ return rc;
+}
+
+static void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
+{
+ struct tpm_buf buf;
+ int rc;
+
+ rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_FLUSH_CONTEXT);
+ if (rc) {
+ dev_warn(chip->pdev, "0x%08x was not flushed, out of memory\n",
+ handle);
+ return;
+ }
+
+ tpm_buf_append_u32(&buf, handle);
+
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "flushing context");
+ if (rc)
+ dev_warn(chip->pdev, "0x%08x was not flushed, rc=%d\n", handle,
+ rc);
+
+ tpm_buf_destroy(&buf);
+}
+
+static int tpm2_unseal(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options,
+ u32 blob_handle)
+{
+ struct tpm_buf buf;
+ u16 data_len;
+ u8 *data;
+ int rc;
+
+ rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_UNSEAL);
+ if (rc)
+ return rc;
+
+ tpm_buf_append_u32(&buf, blob_handle);
+ tpm2_buf_append_auth(&buf, TPM2_RS_PW,
+ NULL /* nonce */, 0,
+ 0 /* session_attributes */,
+ options->blobauth /* hmac */,
+ TPM_DIGEST_SIZE);
+
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "unsealing");
+ if (rc > 0)
+ rc = -EPERM;
+
+ if (!rc) {
+ data_len = be16_to_cpup(
+ (__be16 *) &buf.data[TPM_HEADER_SIZE + 4]);
+ data = &buf.data[TPM_HEADER_SIZE + 6];
+
+ memcpy(payload->key, data, data_len - 1);
+ payload->key_len = data_len - 1;
+ payload->migratable = data[data_len - 1];
+ }
+
+ tpm_buf_destroy(&buf);
+ return rc;
+}
+
+/**
+ * tpm_unseal_trusted() - unseal a trusted key
+ * @chip_num: A specific chip number for the request or TPM_ANY_NUM
+ * @options: authentication values and other options
+ * @payload: the key data in clear and encrypted form
+ *
+ * Returns < 0 on error and 0 on success.
+ */
+int tpm2_unseal_trusted(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options)
+{
+ u32 blob_handle;
+ int rc;
+
+ rc = tpm2_load(chip, payload, options, &blob_handle);
+ if (rc)
+ return rc;
+
+ rc = tpm2_unseal(chip, payload, options, blob_handle);
+
+ tpm2_flush_context(chip, blob_handle);
+
+ return rc;
+}
+
/**
* tpm2_get_tpm_pt() - get value of a TPM_CAP_TPM_PROPERTIES type property
* @chip: TPM chip to use.
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index 126732259..4bb9727c1 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -34,12 +34,6 @@ enum crb_defaults {
CRB_ACPI_START_INDEX = 1,
};
-enum crb_start_method {
- CRB_SM_ACPI_START = 2,
- CRB_SM_CRB = 7,
- CRB_SM_CRB_WITH_ACPI_START = 8,
-};
-
struct acpi_tpm2 {
struct acpi_table_header hdr;
u16 platform_class;
@@ -74,7 +68,8 @@ struct crb_control_area {
u32 int_enable;
u32 int_sts;
u32 cmd_size;
- u64 cmd_pa;
+ u32 cmd_pa_low;
+ u32 cmd_pa_high;
u32 rsp_size;
u64 rsp_pa;
} __packed;
@@ -220,12 +215,6 @@ static int crb_acpi_add(struct acpi_device *device)
u64 pa;
int rc;
- chip = tpmm_chip_alloc(dev, &tpm_crb);
- if (IS_ERR(chip))
- return PTR_ERR(chip);
-
- chip->flags = TPM_CHIP_FLAG_TPM2;
-
status = acpi_get_table(ACPI_SIG_TPM2, 1,
(struct acpi_table_header **) &buf);
if (ACPI_FAILURE(status)) {
@@ -233,13 +222,15 @@ static int crb_acpi_add(struct acpi_device *device)
return -ENODEV;
}
- /* At least some versions of AMI BIOS have a bug that TPM2 table has
- * zero address for the control area and therefore we must fail.
- */
- if (!buf->control_area_pa) {
- dev_err(dev, "TPM2 ACPI table has a zero address for the control area\n");
- return -EINVAL;
- }
+ /* Should the FIFO driver handle this? */
+ if (buf->start_method == TPM2_START_FIFO)
+ return -ENODEV;
+
+ chip = tpmm_chip_alloc(dev, &tpm_crb);
+ if (IS_ERR(chip))
+ return PTR_ERR(chip);
+
+ chip->flags = TPM_CHIP_FLAG_TPM2;
if (buf->hdr.length < sizeof(struct acpi_tpm2)) {
dev_err(dev, "TPM2 ACPI table has wrong size");
@@ -259,11 +250,11 @@ static int crb_acpi_add(struct acpi_device *device)
* report only ACPI start but in practice seems to require both
* ACPI start and CRB start.
*/
- if (sm == CRB_SM_CRB || sm == CRB_SM_CRB_WITH_ACPI_START ||
+ if (sm == TPM2_START_CRB || sm == TPM2_START_FIFO ||
!strcmp(acpi_device_hid(device), "MSFT0101"))
priv->flags |= CRB_FL_CRB_START;
- if (sm == CRB_SM_ACPI_START || sm == CRB_SM_CRB_WITH_ACPI_START)
+ if (sm == TPM2_START_ACPI || sm == TPM2_START_CRB_WITH_ACPI)
priv->flags |= CRB_FL_ACPI_START;
priv->cca = (struct crb_control_area __iomem *)
@@ -273,8 +264,8 @@ static int crb_acpi_add(struct acpi_device *device)
return -ENOMEM;
}
- memcpy_fromio(&pa, &priv->cca->cmd_pa, 8);
- pa = le64_to_cpu(pa);
+ pa = ((u64) le32_to_cpu(ioread32(&priv->cca->cmd_pa_high)) << 32) |
+ (u64) le32_to_cpu(ioread32(&priv->cca->cmd_pa_low));
priv->cmd = devm_ioremap_nocache(dev, pa,
ioread32(&priv->cca->cmd_size));
if (!priv->cmd) {
diff --git a/drivers/char/tpm/tpm_eventlog.c b/drivers/char/tpm/tpm_eventlog.c
index 3a56a1315..bd72fb042 100644
--- a/drivers/char/tpm/tpm_eventlog.c
+++ b/drivers/char/tpm/tpm_eventlog.c
@@ -76,15 +76,25 @@ static void *tpm_bios_measurements_start(struct seq_file *m, loff_t *pos)
void *addr = log->bios_event_log;
void *limit = log->bios_event_log_end;
struct tcpa_event *event;
+ u32 converted_event_size;
+ u32 converted_event_type;
+
/* read over *pos measurements */
for (i = 0; i < *pos; i++) {
event = addr;
+ converted_event_size =
+ do_endian_conversion(event->event_size);
+ converted_event_type =
+ do_endian_conversion(event->event_type);
+
if ((addr + sizeof(struct tcpa_event)) < limit) {
- if (event->event_type == 0 && event->event_size == 0)
+ if ((converted_event_type == 0) &&
+ (converted_event_size == 0))
return NULL;
- addr += sizeof(struct tcpa_event) + event->event_size;
+ addr += (sizeof(struct tcpa_event) +
+ converted_event_size);
}
}
@@ -94,8 +104,12 @@ static void *tpm_bios_measurements_start(struct seq_file *m, loff_t *pos)
event = addr;
- if ((event->event_type == 0 && event->event_size == 0) ||
- ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit))
+ converted_event_size = do_endian_conversion(event->event_size);
+ converted_event_type = do_endian_conversion(event->event_type);
+
+ if (((converted_event_type == 0) && (converted_event_size == 0))
+ || ((addr + sizeof(struct tcpa_event) + converted_event_size)
+ >= limit))
return NULL;
return addr;
@@ -107,8 +121,12 @@ static void *tpm_bios_measurements_next(struct seq_file *m, void *v,
struct tcpa_event *event = v;
struct tpm_bios_log *log = m->private;
void *limit = log->bios_event_log_end;
+ u32 converted_event_size;
+ u32 converted_event_type;
- v += sizeof(struct tcpa_event) + event->event_size;
+ converted_event_size = do_endian_conversion(event->event_size);
+
+ v += sizeof(struct tcpa_event) + converted_event_size;
/* now check if current entry is valid */
if ((v + sizeof(struct tcpa_event)) >= limit)
@@ -116,11 +134,11 @@ static void *tpm_bios_measurements_next(struct seq_file *m, void *v,
event = v;
- if (event->event_type == 0 && event->event_size == 0)
- return NULL;
+ converted_event_size = do_endian_conversion(event->event_size);
+ converted_event_type = do_endian_conversion(event->event_type);
- if ((event->event_type == 0 && event->event_size == 0) ||
- ((v + sizeof(struct tcpa_event) + event->event_size) >= limit))
+ if (((converted_event_type == 0) && (converted_event_size == 0)) ||
+ ((v + sizeof(struct tcpa_event) + converted_event_size) >= limit))
return NULL;
(*pos)++;
@@ -140,7 +158,7 @@ static int get_event_name(char *dest, struct tcpa_event *event,
int i, n_len = 0, d_len = 0;
struct tcpa_pc_event *pc_event;
- switch(event->event_type) {
+ switch (do_endian_conversion(event->event_type)) {
case PREBOOT:
case POST_CODE:
case UNUSED:
@@ -156,14 +174,16 @@ static int get_event_name(char *dest, struct tcpa_event *event,
case NONHOST_CODE:
case NONHOST_CONFIG:
case NONHOST_INFO:
- name = tcpa_event_type_strings[event->event_type];
+ name = tcpa_event_type_strings[do_endian_conversion
+ (event->event_type)];
n_len = strlen(name);
break;
case SEPARATOR:
case ACTION:
- if (MAX_TEXT_EVENT > event->event_size) {
+ if (MAX_TEXT_EVENT >
+ do_endian_conversion(event->event_size)) {
name = event_entry;
- n_len = event->event_size;
+ n_len = do_endian_conversion(event->event_size);
}
break;
case EVENT_TAG:
@@ -171,7 +191,7 @@ static int get_event_name(char *dest, struct tcpa_event *event,
/* ToDo Row data -> Base64 */
- switch (pc_event->event_id) {
+ switch (do_endian_conversion(pc_event->event_id)) {
case SMBIOS:
case BIS_CERT:
case CMOS:
@@ -179,7 +199,8 @@ static int get_event_name(char *dest, struct tcpa_event *event,
case OPTION_ROM_EXEC:
case OPTION_ROM_CONFIG:
case S_CRTM_VERSION:
- name = tcpa_pc_event_id_strings[pc_event->event_id];
+ name = tcpa_pc_event_id_strings[do_endian_conversion
+ (pc_event->event_id)];
n_len = strlen(name);
break;
/* hash data */
@@ -188,7 +209,8 @@ static int get_event_name(char *dest, struct tcpa_event *event,
case OPTION_ROM_MICROCODE:
case S_CRTM_CONTENTS:
case POST_CONTENTS:
- name = tcpa_pc_event_id_strings[pc_event->event_id];
+ name = tcpa_pc_event_id_strings[do_endian_conversion
+ (pc_event->event_id)];
n_len = strlen(name);
for (i = 0; i < 20; i++)
d_len += sprintf(&data[2*i], "%02x",
@@ -209,13 +231,24 @@ static int get_event_name(char *dest, struct tcpa_event *event,
static int tpm_binary_bios_measurements_show(struct seq_file *m, void *v)
{
struct tcpa_event *event = v;
- char *data = v;
+ struct tcpa_event temp_event;
+ char *tempPtr;
int i;
- for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++)
- seq_putc(m, data[i]);
+ memcpy(&temp_event, event, sizeof(struct tcpa_event));
+
+ /* convert raw integers for endianness */
+ temp_event.pcr_index = do_endian_conversion(event->pcr_index);
+ temp_event.event_type = do_endian_conversion(event->event_type);
+ temp_event.event_size = do_endian_conversion(event->event_size);
+
+ tempPtr = (char *)&temp_event;
+
+ for (i = 0; i < sizeof(struct tcpa_event) + temp_event.event_size; i++)
+ seq_putc(m, tempPtr[i]);
return 0;
+
}
static int tpm_bios_measurements_release(struct inode *inode,
@@ -238,7 +271,7 @@ static int tpm_ascii_bios_measurements_show(struct seq_file *m, void *v)
char *eventname;
struct tcpa_event *event = v;
unsigned char *event_entry =
- (unsigned char *) (v + sizeof(struct tcpa_event));
+ (unsigned char *)(v + sizeof(struct tcpa_event));
eventname = kmalloc(MAX_TEXT_EVENT, GFP_KERNEL);
if (!eventname) {
@@ -247,13 +280,14 @@ static int tpm_ascii_bios_measurements_show(struct seq_file *m, void *v)
return -EFAULT;
}
- seq_printf(m, "%2d ", event->pcr_index);
+ /* 1st: PCR */
+ seq_printf(m, "%2d ", do_endian_conversion(event->pcr_index));
/* 2nd: SHA1 */
seq_printf(m, "%20phN", event->pcr_value);
/* 3rd: event type identifier */
- seq_printf(m, " %02x", event->event_type);
+ seq_printf(m, " %02x", do_endian_conversion(event->event_type));
len += get_event_name(eventname, event, event_entry);
diff --git a/drivers/char/tpm/tpm_eventlog.h b/drivers/char/tpm/tpm_eventlog.h
index e7da086d6..267bfbd1b 100644
--- a/drivers/char/tpm/tpm_eventlog.h
+++ b/drivers/char/tpm/tpm_eventlog.h
@@ -6,6 +6,12 @@
#define MAX_TEXT_EVENT 1000 /* Max event string length */
#define ACPI_TCPA_SIG "TCPA" /* 0x41504354 /'TCPA' */
+#ifdef CONFIG_PPC64
+#define do_endian_conversion(x) be32_to_cpu(x)
+#else
+#define do_endian_conversion(x) x
+#endif
+
enum bios_platform_class {
BIOS_CLIENT = 0x00,
BIOS_SERVER = 0x01,
diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c
index 7a0ca78ad..8dfb88b97 100644
--- a/drivers/char/tpm/tpm_i2c_atmel.c
+++ b/drivers/char/tpm/tpm_i2c_atmel.c
@@ -217,7 +217,6 @@ static struct i2c_driver i2c_atmel_driver = {
.remove = i2c_atmel_remove,
.driver = {
.name = I2C_DRIVER_NAME,
- .owner = THIS_MODULE,
.pm = &i2c_atmel_pm_ops,
.of_match_table = of_match_ptr(i2c_atmel_of_match),
},
diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c
index 33c5f360a..63d5d22e9 100644
--- a/drivers/char/tpm/tpm_i2c_infineon.c
+++ b/drivers/char/tpm/tpm_i2c_infineon.c
@@ -711,7 +711,6 @@ static struct i2c_driver tpm_tis_i2c_driver = {
.remove = tpm_tis_i2c_remove,
.driver = {
.name = "tpm_i2c_infineon",
- .owner = THIS_MODULE,
.pm = &tpm_tis_i2c_ops,
.of_match_table = of_match_ptr(tpm_tis_i2c_of_match),
},
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index 9d42b7d78..847f1597f 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -641,7 +641,6 @@ static struct i2c_driver i2c_nuvoton_driver = {
.remove = i2c_nuvoton_remove,
.driver = {
.name = I2C_DRIVER_NAME,
- .owner = THIS_MODULE,
.pm = &i2c_nuvoton_pm_ops,
.of_match_table = of_match_ptr(i2c_nuvoton_of_match),
},
diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
index 27ebf9511..3e6a22658 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -491,7 +491,7 @@ static void ibmvtpm_crq_process(struct ibmvtpm_crq *crq,
}
ibmvtpm->rtce_size = be16_to_cpu(crq->len);
ibmvtpm->rtce_buf = kmalloc(ibmvtpm->rtce_size,
- GFP_KERNEL);
+ GFP_ATOMIC);
if (!ibmvtpm->rtce_buf) {
dev_err(ibmvtpm->dev, "Failed to allocate memory for rtce buffer\n");
return;
diff --git a/drivers/char/tpm/tpm_of.c b/drivers/char/tpm/tpm_of.c
index eebe62569..570f30c5c 100644
--- a/drivers/char/tpm/tpm_of.c
+++ b/drivers/char/tpm/tpm_of.c
@@ -24,14 +24,14 @@ int read_log(struct tpm_bios_log *log)
{
struct device_node *np;
const u32 *sizep;
- const __be64 *basep;
+ const u64 *basep;
if (log->bios_event_log != NULL) {
pr_err("%s: ERROR - Eventlog already initialized\n", __func__);
return -EFAULT;
}
- np = of_find_node_by_name(NULL, "ibm,vtpm");
+ np = of_find_node_by_name(NULL, "vtpm");
if (!np) {
pr_err("%s: ERROR - IBMVTPM not supported\n", __func__);
return -ENODEV;
@@ -53,17 +53,18 @@ int read_log(struct tpm_bios_log *log)
goto cleanup_eio;
}
- of_node_put(np);
log->bios_event_log = kmalloc(*sizep, GFP_KERNEL);
if (!log->bios_event_log) {
pr_err("%s: ERROR - Not enough memory for BIOS measurements\n",
__func__);
+ of_node_put(np);
return -ENOMEM;
}
log->bios_event_log_end = log->bios_event_log + *sizep;
- memcpy(log->bios_event_log, __va(be64_to_cpup(basep)), *sizep);
+ memcpy(log->bios_event_log, __va(*basep), *sizep);
+ of_node_put(np);
return 0;
diff --git a/drivers/char/tpm/tpm_ppi.c b/drivers/char/tpm/tpm_ppi.c
index 6ca9b5d78..692a2c6ae 100644
--- a/drivers/char/tpm/tpm_ppi.c
+++ b/drivers/char/tpm/tpm_ppi.c
@@ -53,7 +53,7 @@ tpm_eval_dsm(acpi_handle ppi_handle, int func, acpi_object_type type,
static ssize_t tpm_show_ppi_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct tpm_chip *chip = to_tpm_chip(dev);
return scnprintf(buf, PAGE_SIZE, "%s\n", chip->ppi_version);
}
@@ -63,7 +63,7 @@ static ssize_t tpm_show_ppi_request(struct device *dev,
{
ssize_t size = -EINVAL;
union acpi_object *obj;
- struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct tpm_chip *chip = to_tpm_chip(dev);
obj = tpm_eval_dsm(chip->acpi_dev_handle, TPM_PPI_FN_GETREQ,
ACPI_TYPE_PACKAGE, NULL);
@@ -100,7 +100,7 @@ static ssize_t tpm_store_ppi_request(struct device *dev,
int func = TPM_PPI_FN_SUBREQ;
union acpi_object *obj, tmp;
union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp);
- struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct tpm_chip *chip = to_tpm_chip(dev);
/*
* the function to submit TPM operation request to pre-os environment
@@ -156,7 +156,7 @@ static ssize_t tpm_show_ppi_transition_action(struct device *dev,
.buffer.length = 0,
.buffer.pointer = NULL
};
- struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct tpm_chip *chip = to_tpm_chip(dev);
static char *info[] = {
"None",
@@ -197,7 +197,7 @@ static ssize_t tpm_show_ppi_response(struct device *dev,
acpi_status status = -EINVAL;
union acpi_object *obj, *ret_obj;
u64 req, res;
- struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct tpm_chip *chip = to_tpm_chip(dev);
obj = tpm_eval_dsm(chip->acpi_dev_handle, TPM_PPI_FN_GETRSP,
ACPI_TYPE_PACKAGE, NULL);
@@ -296,7 +296,7 @@ static ssize_t tpm_show_ppi_tcg_operations(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct tpm_chip *chip = to_tpm_chip(dev);
return show_ppi_operations(chip->acpi_dev_handle, buf, 0,
PPI_TPM_REQ_MAX);
@@ -306,7 +306,7 @@ static ssize_t tpm_show_ppi_vs_operations(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct tpm_chip *chip = to_tpm_chip(dev);
return show_ppi_operations(chip->acpi_dev_handle, buf, PPI_VS_REQ_START,
PPI_VS_REQ_END);
@@ -334,17 +334,16 @@ static struct attribute_group ppi_attr_grp = {
.attrs = ppi_attrs
};
-int tpm_add_ppi(struct tpm_chip *chip)
+void tpm_add_ppi(struct tpm_chip *chip)
{
union acpi_object *obj;
- int rc;
if (!chip->acpi_dev_handle)
- return 0;
+ return;
if (!acpi_check_dsm(chip->acpi_dev_handle, tpm_ppi_uuid,
TPM_PPI_REVISION_ID, 1 << TPM_PPI_FN_VERSION))
- return 0;
+ return;
/* Cache PPI version string. */
obj = acpi_evaluate_dsm_typed(chip->acpi_dev_handle, tpm_ppi_uuid,
@@ -356,16 +355,5 @@ int tpm_add_ppi(struct tpm_chip *chip)
ACPI_FREE(obj);
}
- rc = sysfs_create_group(&chip->pdev->kobj, &ppi_attr_grp);
-
- if (!rc)
- chip->flags |= TPM_CHIP_FLAG_PPI;
-
- return rc;
-}
-
-void tpm_remove_ppi(struct tpm_chip *chip)
-{
- if (chip->flags & TPM_CHIP_FLAG_PPI)
- sysfs_remove_group(&chip->pdev->kobj, &ppi_attr_grp);
+ chip->groups[chip->groups_cnt++] = &ppi_attr_grp;
}
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index f2dffa770..65f7eecc4 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -1,6 +1,6 @@
/*
* Copyright (C) 2005, 2006 IBM Corporation
- * Copyright (C) 2014 Intel Corporation
+ * Copyright (C) 2014, 2015 Intel Corporation
*
* Authors:
* Leendert van Doorn <leendert@watson.ibm.com>
@@ -28,6 +28,7 @@
#include <linux/wait.h>
#include <linux/acpi.h>
#include <linux/freezer.h>
+#include <acpi/actbl2.h>
#include "tpm.h"
enum tis_access {
@@ -65,6 +66,17 @@ enum tis_defaults {
TIS_LONG_TIMEOUT = 2000, /* 2 sec */
};
+struct tpm_info {
+ unsigned long start;
+ unsigned long len;
+ unsigned int irq;
+};
+
+static struct tpm_info tis_default_info = {
+ .start = TIS_MEM_BASE,
+ .len = TIS_MEM_LEN,
+ .irq = 0,
+};
/* Some timeout values are needed before it is known whether the chip is
* TPM 1.0 or TPM 2.0.
@@ -91,26 +103,54 @@ struct priv_data {
};
#if defined(CONFIG_PNP) && defined(CONFIG_ACPI)
-static int is_itpm(struct pnp_dev *dev)
+static int has_hid(struct acpi_device *dev, const char *hid)
{
- struct acpi_device *acpi = pnp_acpi_device(dev);
struct acpi_hardware_id *id;
- if (!acpi)
- return 0;
-
- list_for_each_entry(id, &acpi->pnp.ids, list) {
- if (!strcmp("INTC0102", id->id))
+ list_for_each_entry(id, &dev->pnp.ids, list)
+ if (!strcmp(hid, id->id))
return 1;
- }
return 0;
}
+
+static inline int is_itpm(struct acpi_device *dev)
+{
+ return has_hid(dev, "INTC0102");
+}
+
+static inline int is_fifo(struct acpi_device *dev)
+{
+ struct acpi_table_tpm2 *tbl;
+ acpi_status st;
+
+ /* TPM 1.2 FIFO */
+ if (!has_hid(dev, "MSFT0101"))
+ return 1;
+
+ st = acpi_get_table(ACPI_SIG_TPM2, 1,
+ (struct acpi_table_header **) &tbl);
+ if (ACPI_FAILURE(st)) {
+ dev_err(&dev->dev, "failed to get TPM2 ACPI table\n");
+ return 0;
+ }
+
+ if (le32_to_cpu(tbl->start_method) != TPM2_START_FIFO)
+ return 0;
+
+ /* TPM 2.0 FIFO */
+ return 1;
+}
#else
-static inline int is_itpm(struct pnp_dev *dev)
+static inline int is_itpm(struct acpi_device *dev)
{
return 0;
}
+
+static inline int is_fifo(struct acpi_device *dev)
+{
+ return 1;
+}
#endif
/* Before we attempt to access the TPM we must see that the valid bit is set.
@@ -600,12 +640,12 @@ static void tpm_tis_remove(struct tpm_chip *chip)
release_locality(chip, chip->vendor.locality, 1);
}
-static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
- resource_size_t start, resource_size_t len,
- unsigned int irq)
+static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
+ acpi_handle acpi_dev_handle)
{
u32 vendor, intfcaps, intmask;
int rc, i, irq_s, irq_e, probe;
+ int irq_r = -1;
struct tpm_chip *chip;
struct priv_data *priv;
@@ -622,7 +662,7 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
chip->acpi_dev_handle = acpi_dev_handle;
#endif
- chip->vendor.iobase = devm_ioremap(dev, start, len);
+ chip->vendor.iobase = devm_ioremap(dev, tpm_info->start, tpm_info->len);
if (!chip->vendor.iobase)
return -EIO;
@@ -707,11 +747,12 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
chip->vendor.iobase +
TPM_INT_ENABLE(chip->vendor.locality));
if (interrupts)
- chip->vendor.irq = irq;
+ chip->vendor.irq = tpm_info->irq;
if (interrupts && !chip->vendor.irq) {
irq_s =
ioread8(chip->vendor.iobase +
TPM_INT_VECTOR(chip->vendor.locality));
+ irq_r = irq_s;
if (irq_s) {
irq_e = irq_s;
} else {
@@ -766,6 +807,8 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
iowrite32(intmask,
chip->vendor.iobase +
TPM_INT_ENABLE(chip->vendor.locality));
+
+ devm_free_irq(dev, i, chip);
}
}
if (chip->vendor.irq) {
@@ -792,7 +835,9 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
chip->vendor.iobase +
TPM_INT_ENABLE(chip->vendor.locality));
}
- }
+ } else if (irq_r != -1)
+ iowrite8(irq_r, chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
@@ -890,27 +935,27 @@ static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume);
static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
const struct pnp_device_id *pnp_id)
{
- resource_size_t start, len;
- unsigned int irq = 0;
+ struct tpm_info tpm_info = tis_default_info;
acpi_handle acpi_dev_handle = NULL;
- start = pnp_mem_start(pnp_dev, 0);
- len = pnp_mem_len(pnp_dev, 0);
+ tpm_info.start = pnp_mem_start(pnp_dev, 0);
+ tpm_info.len = pnp_mem_len(pnp_dev, 0);
if (pnp_irq_valid(pnp_dev, 0))
- irq = pnp_irq(pnp_dev, 0);
+ tpm_info.irq = pnp_irq(pnp_dev, 0);
else
interrupts = false;
- if (is_itpm(pnp_dev))
- itpm = true;
-
#ifdef CONFIG_ACPI
- if (pnp_acpi_device(pnp_dev))
+ if (pnp_acpi_device(pnp_dev)) {
+ if (is_itpm(pnp_acpi_device(pnp_dev)))
+ itpm = true;
+
acpi_dev_handle = pnp_acpi_device(pnp_dev)->handle;
+ }
#endif
- return tpm_tis_init(&pnp_dev->dev, acpi_dev_handle, start, len, irq);
+ return tpm_tis_init(&pnp_dev->dev, &tpm_info, acpi_dev_handle);
}
static struct pnp_device_id tpm_pnp_tbl[] = {
@@ -930,6 +975,7 @@ MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
static void tpm_tis_pnp_remove(struct pnp_dev *dev)
{
struct tpm_chip *chip = pnp_get_drvdata(dev);
+
tpm_chip_unregister(chip);
tpm_tis_remove(chip);
}
@@ -950,6 +996,79 @@ module_param_string(hid, tpm_pnp_tbl[TIS_HID_USR_IDX].id,
MODULE_PARM_DESC(hid, "Set additional specific HID for this driver to probe");
#endif
+#ifdef CONFIG_ACPI
+static int tpm_check_resource(struct acpi_resource *ares, void *data)
+{
+ struct tpm_info *tpm_info = (struct tpm_info *) data;
+ struct resource res;
+
+ if (acpi_dev_resource_interrupt(ares, 0, &res)) {
+ tpm_info->irq = res.start;
+ } else if (acpi_dev_resource_memory(ares, &res)) {
+ tpm_info->start = res.start;
+ tpm_info->len = resource_size(&res);
+ }
+
+ return 1;
+}
+
+static int tpm_tis_acpi_init(struct acpi_device *acpi_dev)
+{
+ struct list_head resources;
+ struct tpm_info tpm_info = tis_default_info;
+ int ret;
+
+ if (!is_fifo(acpi_dev))
+ return -ENODEV;
+
+ INIT_LIST_HEAD(&resources);
+ ret = acpi_dev_get_resources(acpi_dev, &resources, tpm_check_resource,
+ &tpm_info);
+ if (ret < 0)
+ return ret;
+
+ acpi_dev_free_resource_list(&resources);
+
+ if (!tpm_info.irq)
+ interrupts = false;
+
+ if (is_itpm(acpi_dev))
+ itpm = true;
+
+ return tpm_tis_init(&acpi_dev->dev, &tpm_info, acpi_dev->handle);
+}
+
+static int tpm_tis_acpi_remove(struct acpi_device *dev)
+{
+ struct tpm_chip *chip = dev_get_drvdata(&dev->dev);
+
+ tpm_chip_unregister(chip);
+ tpm_tis_remove(chip);
+
+ return 0;
+}
+
+static struct acpi_device_id tpm_acpi_tbl[] = {
+ {"MSFT0101", 0}, /* TPM 2.0 */
+ /* Add new here */
+ {"", 0}, /* User Specified */
+ {"", 0} /* Terminator */
+};
+MODULE_DEVICE_TABLE(acpi, tpm_acpi_tbl);
+
+static struct acpi_driver tis_acpi_driver = {
+ .name = "tpm_tis",
+ .ids = tpm_acpi_tbl,
+ .ops = {
+ .add = tpm_tis_acpi_init,
+ .remove = tpm_tis_acpi_remove,
+ },
+ .drv = {
+ .pm = &tpm_tis_pm,
+ },
+};
+#endif
+
static struct platform_driver tis_drv = {
.driver = {
.name = "tpm_tis",
@@ -966,9 +1085,25 @@ static int __init init_tis(void)
{
int rc;
#ifdef CONFIG_PNP
- if (!force)
- return pnp_register_driver(&tis_pnp_driver);
+ if (!force) {
+ rc = pnp_register_driver(&tis_pnp_driver);
+ if (rc)
+ return rc;
+ }
+#endif
+#ifdef CONFIG_ACPI
+ if (!force) {
+ rc = acpi_bus_register_driver(&tis_acpi_driver);
+ if (rc) {
+#ifdef CONFIG_PNP
+ pnp_unregister_driver(&tis_pnp_driver);
#endif
+ return rc;
+ }
+ }
+#endif
+ if (!force)
+ return 0;
rc = platform_driver_register(&tis_drv);
if (rc < 0)
@@ -978,7 +1113,7 @@ static int __init init_tis(void)
rc = PTR_ERR(pdev);
goto err_dev;
}
- rc = tpm_tis_init(&pdev->dev, NULL, TIS_MEM_BASE, TIS_MEM_LEN, 0);
+ rc = tpm_tis_init(&pdev->dev, &tis_default_info, NULL);
if (rc)
goto err_init;
return 0;
@@ -992,9 +1127,14 @@ err_dev:
static void __exit cleanup_tis(void)
{
struct tpm_chip *chip;
-#ifdef CONFIG_PNP
+#if defined(CONFIG_PNP) || defined(CONFIG_ACPI)
if (!force) {
+#ifdef CONFIG_ACPI
+ acpi_bus_unregister_driver(&tis_acpi_driver);
+#endif
+#ifdef CONFIG_PNP
pnp_unregister_driver(&tis_pnp_driver);
+#endif
return;
}
#endif
--
cgit v1.2.3-54-g00ecf