diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-19 19:28:41 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-19 19:28:41 +0100 |
commit | 02b2f1a7b8ef340e57cae640a52ec7199b0b887d (patch) | |
tree | 5f988798262afdeda17dc8f0cd6882d30621de5d /drivers/char | |
parent | Merge tag 'chrome-platform-firmware-for-6.13' of git://git.kernel.org/pub/scm... (diff) | |
parent | crypto: marvell/cesa - fix uninit value for struct mv_cesa_op_ctx (diff) | |
download | linux-02b2f1a7b8ef340e57cae640a52ec7199b0b887d.tar.xz linux-02b2f1a7b8ef340e57cae640a52ec7199b0b887d.zip |
Merge tag 'v6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Add sig driver API
- Remove signing/verification from akcipher API
- Move crypto_simd_disabled_for_test to lib/crypto
- Add WARN_ON for return values from driver that indicates memory
corruption
Algorithms:
- Provide crc32-arch and crc32c-arch through Crypto API
- Optimise crc32c code size on x86
- Optimise crct10dif on arm/arm64
- Optimise p10-aes-gcm on powerpc
- Optimise aegis128 on x86
- Output full sample from test interface in jitter RNG
- Retry without padata when it fails in pcrypt
Drivers:
- Add support for Airoha EN7581 TRNG
- Add support for STM32MP25x platforms in stm32
- Enable iproc-r200 RNG driver on BCMBCA
- Add Broadcom BCM74110 RNG driver"
* tag 'v6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (112 commits)
crypto: marvell/cesa - fix uninit value for struct mv_cesa_op_ctx
crypto: cavium - Fix an error handling path in cpt_ucode_load_fw()
crypto: aesni - Move back to module_init
crypto: lib/mpi - Export mpi_set_bit
crypto: aes-gcm-p10 - Use the correct bit to test for P10
hwrng: amd - remove reference to removed PPC_MAPLE config
crypto: arm/crct10dif - Implement plain NEON variant
crypto: arm/crct10dif - Macroify PMULL asm code
crypto: arm/crct10dif - Use existing mov_l macro instead of __adrl
crypto: arm64/crct10dif - Remove remaining 64x64 PMULL fallback code
crypto: arm64/crct10dif - Use faster 16x64 bit polynomial multiply
crypto: arm64/crct10dif - Remove obsolete chunking logic
crypto: bcm - add error check in the ahash_hmac_init function
crypto: caam - add error check to caam_rsa_set_priv_key_form
hwrng: bcm74110 - Add Broadcom BCM74110 RNG driver
dt-bindings: rng: add binding for BCM74110 RNG
padata: Clean up in padata_do_multithreaded()
crypto: inside-secure - Fix the return value of safexcel_xcbcmac_cra_init()
crypto: qat - Fix missing destroy_workqueue in adf_init_aer()
crypto: rsassa-pkcs1 - Reinstate support for legacy protocols
...
Diffstat (limited to 'drivers/char')
-rw-r--r-- | drivers/char/hw_random/Kconfig | 30 | ||||
-rw-r--r-- | drivers/char/hw_random/Makefile | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/airoha-trng.c | 243 | ||||
-rw-r--r-- | drivers/char/hw_random/atmel-rng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/bcm74110-rng.c | 125 | ||||
-rw-r--r-- | drivers/char/hw_random/cctrng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/core.c | 11 | ||||
-rw-r--r-- | drivers/char/hw_random/exynos-trng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/histb-rng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/ingenic-rng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/ks-sa-rng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/mxc-rnga.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/n2-drv.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/npcm-rng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/omap-rng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/stm32-rng.c | 78 | ||||
-rw-r--r-- | drivers/char/hw_random/timeriomem-rng.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/xgene-rng.c | 2 |
18 files changed, 477 insertions, 36 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index b51d9e243f35..17854f052386 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -50,7 +50,7 @@ config HW_RANDOM_INTEL config HW_RANDOM_AMD tristate "AMD HW Random Number Generator support" - depends on (X86 || PPC_MAPLE || COMPILE_TEST) + depends on (X86 || COMPILE_TEST) depends on PCI && HAS_IOPORT_MAP default HW_RANDOM help @@ -62,6 +62,19 @@ config HW_RANDOM_AMD If unsure, say Y. +config HW_RANDOM_AIROHA + tristate "Airoha True HW Random Number Generator support" + depends on ARCH_AIROHA || COMPILE_TEST + default HW_RANDOM + help + This driver provides kernel-side support for the True Random Number + Generator hardware found on Airoha SoC. + + To compile this driver as a module, choose M here: the + module will be called airoha-rng. + + If unsure, say Y. + config HW_RANDOM_ATMEL tristate "Atmel Random Number Generator support" depends on (ARCH_AT91 || COMPILE_TEST) @@ -99,9 +112,22 @@ config HW_RANDOM_BCM2835 If unsure, say Y. +config HW_RANDOM_BCM74110 + tristate "Broadcom BCM74110 Random Number Generator support" + depends on ARCH_BRCMSTB || COMPILE_TEST + default HW_RANDOM + help + This driver provides kernel-side support for the Random Number + Generator hardware found on the Broadcom BCM74110 SoCs. + + To compile this driver as a module, choose M here: the + module will be called bcm74110-rng + + If unsure, say Y. + config HW_RANDOM_IPROC_RNG200 tristate "Broadcom iProc/STB RNG200 support" - depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST + depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BCMBCA || ARCH_BRCMSTB || COMPILE_TEST default HW_RANDOM help This driver provides kernel-side support for the RNG200 diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile index 01f012eab440..b9132b3f5d21 100644 --- a/drivers/char/hw_random/Makefile +++ b/drivers/char/hw_random/Makefile @@ -8,6 +8,7 @@ rng-core-y := core.o obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += timeriomem-rng.o obj-$(CONFIG_HW_RANDOM_INTEL) += intel-rng.o obj-$(CONFIG_HW_RANDOM_AMD) += amd-rng.o +obj-$(CONFIG_HW_RANDOM_AIROHA) += airoha-trng.o obj-$(CONFIG_HW_RANDOM_ATMEL) += atmel-rng.o obj-$(CONFIG_HW_RANDOM_BA431) += ba431-rng.o obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o @@ -31,6 +32,7 @@ obj-$(CONFIG_HW_RANDOM_POWERNV) += powernv-rng.o obj-$(CONFIG_HW_RANDOM_HISI) += hisi-rng.o obj-$(CONFIG_HW_RANDOM_HISTB) += histb-rng.o obj-$(CONFIG_HW_RANDOM_BCM2835) += bcm2835-rng.o +obj-$(CONFIG_HW_RANDOM_BCM74110) += bcm74110-rng.o obj-$(CONFIG_HW_RANDOM_IPROC_RNG200) += iproc-rng200.o obj-$(CONFIG_HW_RANDOM_ST) += st-rng.o obj-$(CONFIG_HW_RANDOM_XGENE) += xgene-rng.o diff --git a/drivers/char/hw_random/airoha-trng.c b/drivers/char/hw_random/airoha-trng.c new file mode 100644 index 000000000000..1dbfa9505c21 --- /dev/null +++ b/drivers/char/hw_random/airoha-trng.c @@ -0,0 +1,243 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2024 Christian Marangi */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/bitfield.h> +#include <linux/delay.h> +#include <linux/hw_random.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/iopoll.h> +#include <linux/platform_device.h> + +#define TRNG_IP_RDY 0x800 +#define CNT_TRANS GENMASK(15, 8) +#define SAMPLE_RDY BIT(0) +#define TRNG_NS_SEK_AND_DAT_EN 0x804 +#define RNG_EN BIT(31) /* referenced as ring_en */ +#define RAW_DATA_EN BIT(16) +#define TRNG_HEALTH_TEST_SW_RST 0x808 +#define SW_RST BIT(0) /* Active High */ +#define TRNG_INTR_EN 0x818 +#define INTR_MASK BIT(16) +#define CONTINUOUS_HEALTH_INITR_EN BIT(2) +#define SW_STARTUP_INITR_EN BIT(1) +#define RST_STARTUP_INITR_EN BIT(0) +/* Notice that Health Test are done only out of Reset and with RNG_EN */ +#define TRNG_HEALTH_TEST_STATUS 0x824 +#define CONTINUOUS_HEALTH_AP_TEST_FAIL BIT(23) +#define CONTINUOUS_HEALTH_RC_TEST_FAIL BIT(22) +#define SW_STARTUP_TEST_DONE BIT(21) +#define SW_STARTUP_AP_TEST_FAIL BIT(20) +#define SW_STARTUP_RC_TEST_FAIL BIT(19) +#define RST_STARTUP_TEST_DONE BIT(18) +#define RST_STARTUP_AP_TEST_FAIL BIT(17) +#define RST_STARTUP_RC_TEST_FAIL BIT(16) +#define RAW_DATA_VALID BIT(7) + +#define TRNG_RAW_DATA_OUT 0x828 + +#define TRNG_CNT_TRANS_VALID 0x80 +#define BUSY_LOOP_SLEEP 10 +#define BUSY_LOOP_TIMEOUT (BUSY_LOOP_SLEEP * 10000) + +struct airoha_trng { + void __iomem *base; + struct hwrng rng; + struct device *dev; + + struct completion rng_op_done; +}; + +static int airoha_trng_irq_mask(struct airoha_trng *trng) +{ + u32 val; + + val = readl(trng->base + TRNG_INTR_EN); + val |= INTR_MASK; + writel(val, trng->base + TRNG_INTR_EN); + + return 0; +} + +static int airoha_trng_irq_unmask(struct airoha_trng *trng) +{ + u32 val; + + val = readl(trng->base + TRNG_INTR_EN); + val &= ~INTR_MASK; + writel(val, trng->base + TRNG_INTR_EN); + + return 0; +} + +static int airoha_trng_init(struct hwrng *rng) +{ + struct airoha_trng *trng = container_of(rng, struct airoha_trng, rng); + int ret; + u32 val; + + val = readl(trng->base + TRNG_NS_SEK_AND_DAT_EN); + val |= RNG_EN; + writel(val, trng->base + TRNG_NS_SEK_AND_DAT_EN); + + /* Set out of SW Reset */ + airoha_trng_irq_unmask(trng); + writel(0, trng->base + TRNG_HEALTH_TEST_SW_RST); + + ret = wait_for_completion_timeout(&trng->rng_op_done, BUSY_LOOP_TIMEOUT); + if (ret <= 0) { + dev_err(trng->dev, "Timeout waiting for Health Check\n"); + airoha_trng_irq_mask(trng); + return -ENODEV; + } + + /* Check if Health Test Failed */ + val = readl(trng->base + TRNG_HEALTH_TEST_STATUS); + if (val & (RST_STARTUP_AP_TEST_FAIL | RST_STARTUP_RC_TEST_FAIL)) { + dev_err(trng->dev, "Health Check fail: %s test fail\n", + val & RST_STARTUP_AP_TEST_FAIL ? "AP" : "RC"); + return -ENODEV; + } + + /* Check if IP is ready */ + ret = readl_poll_timeout(trng->base + TRNG_IP_RDY, val, + val & SAMPLE_RDY, 10, 1000); + if (ret < 0) { + dev_err(trng->dev, "Timeout waiting for IP ready"); + return -ENODEV; + } + + /* CNT_TRANS must be 0x80 for IP to be considered ready */ + ret = readl_poll_timeout(trng->base + TRNG_IP_RDY, val, + FIELD_GET(CNT_TRANS, val) == TRNG_CNT_TRANS_VALID, + 10, 1000); + if (ret < 0) { + dev_err(trng->dev, "Timeout waiting for IP ready"); + return -ENODEV; + } + + return 0; +} + +static void airoha_trng_cleanup(struct hwrng *rng) +{ + struct airoha_trng *trng = container_of(rng, struct airoha_trng, rng); + u32 val; + + val = readl(trng->base + TRNG_NS_SEK_AND_DAT_EN); + val &= ~RNG_EN; + writel(val, trng->base + TRNG_NS_SEK_AND_DAT_EN); + + /* Put it in SW Reset */ + writel(SW_RST, trng->base + TRNG_HEALTH_TEST_SW_RST); +} + +static int airoha_trng_read(struct hwrng *rng, void *buf, size_t max, bool wait) +{ + struct airoha_trng *trng = container_of(rng, struct airoha_trng, rng); + u32 *data = buf; + u32 status; + int ret; + + ret = readl_poll_timeout(trng->base + TRNG_HEALTH_TEST_STATUS, status, + status & RAW_DATA_VALID, 10, 1000); + if (ret < 0) { + dev_err(trng->dev, "Timeout waiting for TRNG RAW Data valid\n"); + return ret; + } + + *data = readl(trng->base + TRNG_RAW_DATA_OUT); + + return 4; +} + +static irqreturn_t airoha_trng_irq(int irq, void *priv) +{ + struct airoha_trng *trng = (struct airoha_trng *)priv; + + airoha_trng_irq_mask(trng); + /* Just complete the task, we will read the value later */ + complete(&trng->rng_op_done); + + return IRQ_HANDLED; +} + +static int airoha_trng_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct airoha_trng *trng; + int irq, ret; + u32 val; + + trng = devm_kzalloc(dev, sizeof(*trng), GFP_KERNEL); + if (!trng) + return -ENOMEM; + + trng->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(trng->base)) + return PTR_ERR(trng->base); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + airoha_trng_irq_mask(trng); + ret = devm_request_irq(&pdev->dev, irq, airoha_trng_irq, 0, + pdev->name, (void *)trng); + if (ret) { + dev_err(dev, "Can't get interrupt working.\n"); + return ret; + } + + init_completion(&trng->rng_op_done); + + /* Enable interrupt for SW reset Health Check */ + val = readl(trng->base + TRNG_INTR_EN); + val |= RST_STARTUP_INITR_EN; + writel(val, trng->base + TRNG_INTR_EN); + + /* Set output to raw data */ + val = readl(trng->base + TRNG_NS_SEK_AND_DAT_EN); + val |= RAW_DATA_EN; + writel(val, trng->base + TRNG_NS_SEK_AND_DAT_EN); + + /* Put it in SW Reset */ + writel(SW_RST, trng->base + TRNG_HEALTH_TEST_SW_RST); + + trng->dev = dev; + trng->rng.name = pdev->name; + trng->rng.init = airoha_trng_init; + trng->rng.cleanup = airoha_trng_cleanup; + trng->rng.read = airoha_trng_read; + + ret = devm_hwrng_register(dev, &trng->rng); + if (ret) { + dev_err(dev, "failed to register rng device: %d\n", ret); + return ret; + } + + return 0; +} + +static const struct of_device_id airoha_trng_of_match[] = { + { .compatible = "airoha,en7581-trng", }, + {}, +}; +MODULE_DEVICE_TABLE(of, airoha_trng_of_match); + +static struct platform_driver airoha_trng_driver = { + .driver = { + .name = "airoha-trng", + .of_match_table = airoha_trng_of_match, + }, + .probe = airoha_trng_probe, +}; + +module_platform_driver(airoha_trng_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Christian Marangi <ansuelsmth@gmail.com>"); +MODULE_DESCRIPTION("Airoha True Random Number Generator driver"); diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c index e9157255f851..143406bc6939 100644 --- a/drivers/char/hw_random/atmel-rng.c +++ b/drivers/char/hw_random/atmel-rng.c @@ -216,7 +216,7 @@ MODULE_DEVICE_TABLE(of, atmel_trng_dt_ids); static struct platform_driver atmel_trng_driver = { .probe = atmel_trng_probe, - .remove_new = atmel_trng_remove, + .remove = atmel_trng_remove, .driver = { .name = "atmel-trng", .pm = pm_ptr(&atmel_trng_pm_ops), diff --git a/drivers/char/hw_random/bcm74110-rng.c b/drivers/char/hw_random/bcm74110-rng.c new file mode 100644 index 000000000000..5c64148e91f1 --- /dev/null +++ b/drivers/char/hw_random/bcm74110-rng.c @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2024 Broadcom + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/random.h> +#include <linux/hw_random.h> + +#define HOST_REV_ID 0x00 +#define HOST_FIFO_DEPTH 0x04 +#define HOST_FIFO_COUNT 0x08 +#define HOST_FIFO_THRESHOLD 0x0c +#define HOST_FIFO_DATA 0x10 + +#define HOST_FIFO_COUNT_MASK 0xffff + +/* Delay range in microseconds */ +#define FIFO_DELAY_MIN_US 3 +#define FIFO_DELAY_MAX_US 7 +#define FIFO_DELAY_MAX_COUNT 10 + +struct bcm74110_priv { + void __iomem *base; +}; + +static inline int bcm74110_rng_fifo_count(void __iomem *mem) +{ + return readl_relaxed(mem) & HOST_FIFO_COUNT_MASK; +} + +static int bcm74110_rng_read(struct hwrng *rng, void *buf, size_t max, + bool wait) +{ + struct bcm74110_priv *priv = (struct bcm74110_priv *)rng->priv; + void __iomem *fc_addr = priv->base + HOST_FIFO_COUNT; + void __iomem *fd_addr = priv->base + HOST_FIFO_DATA; + unsigned underrun_count = 0; + u32 max_words = max / sizeof(u32); + u32 num_words; + unsigned i; + + /* + * We need to check how many words are available in the RNG FIFO. If + * there aren't any, we need to wait for some to become available. + */ + while ((num_words = bcm74110_rng_fifo_count(fc_addr)) == 0) { + if (!wait) + return 0; + /* + * As a precaution, limit how long we wait. If the FIFO doesn't + * refill within the allotted time, return 0 (=no data) to the + * caller. + */ + if (likely(underrun_count < FIFO_DELAY_MAX_COUNT)) + usleep_range(FIFO_DELAY_MIN_US, FIFO_DELAY_MAX_US); + else + return 0; + underrun_count++; + } + if (num_words > max_words) + num_words = max_words; + + /* Bail early if we run out of random numbers unexpectedly */ + for (i = 0; i < num_words && bcm74110_rng_fifo_count(fc_addr) > 0; i++) + ((u32 *)buf)[i] = readl_relaxed(fd_addr); + + return i * sizeof(u32); +} + +static struct hwrng bcm74110_hwrng = { + .read = bcm74110_rng_read, +}; + +static int bcm74110_rng_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct bcm74110_priv *priv; + int rc; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + bcm74110_hwrng.name = pdev->name; + bcm74110_hwrng.priv = (unsigned long)priv; + + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + rc = devm_hwrng_register(dev, &bcm74110_hwrng); + if (rc) + dev_err(dev, "hwrng registration failed (%d)\n", rc); + else + dev_info(dev, "hwrng registered\n"); + + return rc; +} + +static const struct of_device_id bcm74110_rng_match[] = { + { .compatible = "brcm,bcm74110-rng", }, + {}, +}; +MODULE_DEVICE_TABLE(of, bcm74110_rng_match); + +static struct platform_driver bcm74110_rng_driver = { + .driver = { + .name = KBUILD_MODNAME, + .of_match_table = bcm74110_rng_match, + }, + .probe = bcm74110_rng_probe, +}; +module_platform_driver(bcm74110_rng_driver); + +MODULE_AUTHOR("Markus Mayer <mmayer@broadcom.com>"); +MODULE_DESCRIPTION("BCM 74110 Random Number Generator (RNG) driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/char/hw_random/cctrng.c b/drivers/char/hw_random/cctrng.c index 4c50efc46483..4db198849695 100644 --- a/drivers/char/hw_random/cctrng.c +++ b/drivers/char/hw_random/cctrng.c @@ -653,7 +653,7 @@ static struct platform_driver cctrng_driver = { .pm = &cctrng_pm, }, .probe = cctrng_probe, - .remove_new = cctrng_remove, + .remove = cctrng_remove, }; module_platform_driver(cctrng_driver); diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index 57c51efa5613..018316f54621 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -181,8 +181,15 @@ static inline int rng_get_data(struct hwrng *rng, u8 *buffer, size_t size, int present; BUG_ON(!mutex_is_locked(&reading_mutex)); - if (rng->read) - return rng->read(rng, (void *)buffer, size, wait); + if (rng->read) { + int err; + + err = rng->read(rng, buffer, size, wait); + if (WARN_ON_ONCE(err > 0 && err > size)) + err = size; + + return err; + } if (rng->data_present) present = rng->data_present(rng, wait); diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c index 9f039fddaee3..02e207c09e81 100644 --- a/drivers/char/hw_random/exynos-trng.c +++ b/drivers/char/hw_random/exynos-trng.c @@ -335,7 +335,7 @@ static struct platform_driver exynos_trng_driver = { .of_match_table = exynos_trng_dt_match, }, .probe = exynos_trng_probe, - .remove_new = exynos_trng_remove, + .remove = exynos_trng_remove, }; module_platform_driver(exynos_trng_driver); diff --git a/drivers/char/hw_random/histb-rng.c b/drivers/char/hw_random/histb-rng.c index f652e1135e4b..1b91e88cc4c0 100644 --- a/drivers/char/hw_random/histb-rng.c +++ b/drivers/char/hw_random/histb-rng.c @@ -89,7 +89,7 @@ depth_show(struct device *dev, struct device_attribute *attr, char *buf) struct histb_rng_priv *priv = dev_get_drvdata(dev); void __iomem *base = priv->base; - return sprintf(buf, "%d\n", histb_rng_get_depth(base)); + return sprintf(buf, "%u\n", histb_rng_get_depth(base)); } static ssize_t diff --git a/drivers/char/hw_random/ingenic-rng.c b/drivers/char/hw_random/ingenic-rng.c index 2f9b6483c4a1..bbfd662d25a6 100644 --- a/drivers/char/hw_random/ingenic-rng.c +++ b/drivers/char/hw_random/ingenic-rng.c @@ -132,7 +132,7 @@ MODULE_DEVICE_TABLE(of, ingenic_rng_of_match); static struct platform_driver ingenic_rng_driver = { .probe = ingenic_rng_probe, - .remove_new = ingenic_rng_remove, + .remove = ingenic_rng_remove, .driver = { .name = "ingenic-rng", .of_match_table = ingenic_rng_of_match, diff --git a/drivers/char/hw_random/ks-sa-rng.c b/drivers/char/hw_random/ks-sa-rng.c index 36c34252b4f6..d8fd8a354482 100644 --- a/drivers/char/hw_random/ks-sa-rng.c +++ b/drivers/char/hw_random/ks-sa-rng.c @@ -261,7 +261,7 @@ static struct platform_driver ks_sa_rng_driver = { .of_match_table = ks_sa_rng_dt_match, }, .probe = ks_sa_rng_probe, - .remove_new = ks_sa_rng_remove, + .remove = ks_sa_rng_remove, }; module_platform_driver(ks_sa_rng_driver); diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c index f01eb95bee31..e3fcb8bcc29b 100644 --- a/drivers/char/hw_random/mxc-rnga.c +++ b/drivers/char/hw_random/mxc-rnga.c @@ -188,7 +188,7 @@ static struct platform_driver mxc_rnga_driver = { .of_match_table = mxc_rnga_of_match, }, .probe = mxc_rnga_probe, - .remove_new = mxc_rnga_remove, + .remove = mxc_rnga_remove, }; module_platform_driver(mxc_rnga_driver); diff --git a/drivers/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c index 1b49e3a86d57..ea6d5599242f 100644 --- a/drivers/char/hw_random/n2-drv.c +++ b/drivers/char/hw_random/n2-drv.c @@ -858,7 +858,7 @@ static struct platform_driver n2rng_driver = { .of_match_table = n2rng_match, }, .probe = n2rng_probe, - .remove_new = n2rng_remove, + .remove = n2rng_remove, }; module_platform_driver(n2rng_driver); diff --git a/drivers/char/hw_random/npcm-rng.c b/drivers/char/hw_random/npcm-rng.c index bce8c4829a1f..9ff00f096f38 100644 --- a/drivers/char/hw_random/npcm-rng.c +++ b/drivers/char/hw_random/npcm-rng.c @@ -176,7 +176,7 @@ static struct platform_driver npcm_rng_driver = { .of_match_table = of_match_ptr(rng_dt_id), }, .probe = npcm_rng_probe, - .remove_new = npcm_rng_remove, + .remove = npcm_rng_remove, }; module_platform_driver(npcm_rng_driver); diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c index 4914a8720e58..5e8b50f15db7 100644 --- a/drivers/char/hw_random/omap-rng.c +++ b/drivers/char/hw_random/omap-rng.c @@ -558,7 +558,7 @@ static struct platform_driver omap_rng_driver = { .of_match_table = of_match_ptr(omap_rng_of_match), }, .probe = omap_rng_probe, - .remove_new = omap_rng_remove, + .remove = omap_rng_remove, }; module_platform_driver(omap_rng_driver); diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c index 9d041a67c295..98edbe796bc5 100644 --- a/drivers/char/hw_random/stm32-rng.c +++ b/drivers/char/hw_random/stm32-rng.c @@ -4,6 +4,7 @@ */ #include <linux/clk.h> +#include <linux/clk-provider.h> #include <linux/delay.h> #include <linux/hw_random.h> #include <linux/io.h> @@ -49,6 +50,7 @@ struct stm32_rng_data { uint max_clock_rate; + uint nb_clock; u32 cr; u32 nscr; u32 htcr; @@ -72,7 +74,7 @@ struct stm32_rng_private { struct hwrng rng; struct device *dev; void __iomem *base; - struct clk *clk; + struct clk_bulk_data *clk_bulk; struct reset_control *rst; struct stm32_rng_config pm_conf; const struct stm32_rng_data *data; @@ -266,7 +268,7 @@ static uint stm32_rng_clock_freq_restrain(struct hwrng *rng) unsigned long clock_rate = 0; uint clock_div = 0; - clock_rate = clk_get_rate(priv->clk); + clock_rate = clk_get_rate(priv->clk_bulk[0].clk); /* * Get the exponent to apply on the CLKDIV field in RNG_CR register @@ -276,7 +278,7 @@ static uint stm32_rng_clock_freq_restrain(struct hwrng *rng) while ((clock_rate >> clock_div) > priv->data->max_clock_rate) clock_div++; - pr_debug("RNG clk rate : %lu\n", clk_get_rate(priv->clk) >> clock_div); + pr_debug("RNG clk rate : %lu\n", clk_get_rate(priv->clk_bulk[0].clk) >> clock_div); return clock_div; } @@ -288,7 +290,7 @@ static int stm32_rng_init(struct hwrng *rng) int err; u32 reg; - err = clk_prepare_enable(priv->clk); + err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk); if (err) return err; @@ -328,7 +330,7 @@ static int stm32_rng_init(struct hwrng *rng) (!(reg & RNG_CR_CONDRST)), 10, 50000); if (err) { - clk_disable_unprepare(priv->clk); + clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk); dev_err(priv->dev, "%s: timeout %x!\n", __func__, reg); return -EINVAL; } @@ -356,12 +358,13 @@ static int stm32_rng_init(struct hwrng *rng) reg & RNG_SR_DRDY, 10, 100000); if (err || (reg & ~RNG_SR_DRDY)) { - clk_disable_unprepare(priv->clk); + clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk); dev_err(priv->dev, "%s: timeout:%x SR: %x!\n", __func__, err, reg); + return -EINVAL; } - clk_disable_unprepare(priv->clk); + clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk); return 0; } @@ -379,7 +382,8 @@ static int __maybe_unused stm32_rng_runtime_suspend(struct device *dev) reg = readl_relaxed(priv->base + RNG_CR); reg &= ~RNG_CR_RNGEN; writel_relaxed(reg, priv->base + RNG_CR); - clk_disable_unprepare(priv->clk); + + clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk); return 0; } @@ -389,7 +393,7 @@ static int __maybe_unused stm32_rng_suspend(struct device *dev) struct stm32_rng_private *priv = dev_get_drvdata(dev); int err; - err = clk_prepare_enable(priv->clk); + err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk); if (err) return err; @@ -403,7 +407,7 @@ static int __maybe_unused stm32_rng_suspend(struct device *dev) writel_relaxed(priv->pm_conf.cr, priv->base + RNG_CR); - clk_disable_unprepare(priv->clk); + clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk); return 0; } @@ -414,7 +418,7 @@ static int __maybe_unused stm32_rng_runtime_resume(struct device *dev) int err; u32 reg; - err = clk_prepare_enable(priv->clk); + err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk); if (err) return err; @@ -434,7 +438,7 @@ static int __maybe_unused stm32_rng_resume(struct device *dev) int err; u32 reg; - err = clk_prepare_enable(priv->clk); + err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk); if (err) return err; @@ -462,7 +466,7 @@ static int __maybe_unused stm32_rng_resume(struct device *dev) reg & ~RNG_CR_CONDRST, 10, 100000); if (err) { - clk_disable_unprepare(priv->clk); + clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk); dev_err(priv->dev, "%s: timeout:%x CR: %x!\n", __func__, err, reg); return -EINVAL; } @@ -472,7 +476,7 @@ static int __maybe_unused stm32_rng_resume(struct device *dev) writel_relaxed(reg, priv->base + RNG_CR); } - clk_disable_unprepare(priv->clk); + clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk); return 0; } @@ -484,9 +488,19 @@ static const struct dev_pm_ops __maybe_unused stm32_rng_pm_ops = { stm32_rng_resume) }; +static const struct stm32_rng_data stm32mp25_rng_data = { + .has_cond_reset = true, + .max_clock_rate = 48000000, + .nb_clock = 2, + .cr = 0x00F00D00, + .nscr = 0x2B5BB, + .htcr = 0x969D, +}; + static const struct stm32_rng_data stm32mp13_rng_data = { .has_cond_reset = true, .max_clock_rate = 48000000, + .nb_clock = 1, .cr = 0x00F00D00, .nscr = 0x2B5BB, .htcr = 0x969D, @@ -494,11 +508,16 @@ static const struct stm32_rng_data stm32mp13_rng_data = { static const struct stm32_rng_data stm32_rng_data = { .has_cond_reset = false, - .max_clock_rate = 3000000, + .max_clock_rate = 48000000, + .nb_clock = 1, }; static const struct of_device_id stm32_rng_match[] = { { + .compatible = "st,stm32mp25-rng", + .data = &stm32mp25_rng_data, + }, + { .compatible = "st,stm32mp13-rng", .data = &stm32mp13_rng_data, }, @@ -516,6 +535,7 @@ static int stm32_rng_probe(struct platform_device *ofdev) struct device_node *np = ofdev->dev.of_node; struct stm32_rng_private *priv; struct resource *res; + int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -525,10 +545,6 @@ static int stm32_rng_probe(struct platform_device *ofdev) 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); - priv->rst = devm_reset_control_get(&ofdev->dev, NULL); if (!IS_ERR(priv->rst)) { reset_control_assert(priv->rst); @@ -551,6 +567,28 @@ static int stm32_rng_probe(struct platform_device *ofdev) priv->rng.read = stm32_rng_read; priv->rng.quality = 900; + if (!priv->data->nb_clock || priv->data->nb_clock > 2) + return -EINVAL; + + ret = devm_clk_bulk_get_all(dev, &priv->clk_bulk); + if (ret != priv->data->nb_clock) + return dev_err_probe(dev, -EINVAL, "Failed to get clocks: %d\n", ret); + + if (priv->data->nb_clock == 2) { + const char *id = priv->clk_bulk[1].id; + struct clk *clk = priv->clk_bulk[1].clk; + + if (!priv->clk_bulk[0].id || !priv->clk_bulk[1].id) + return dev_err_probe(dev, -EINVAL, "Missing clock name\n"); + + if (strcmp(priv->clk_bulk[0].id, "core")) { + priv->clk_bulk[1].id = priv->clk_bulk[0].id; + priv->clk_bulk[1].clk = priv->clk_bulk[0].clk; + priv->clk_bulk[0].id = id; + priv->clk_bulk[0].clk = clk; + } + } + pm_runtime_set_autosuspend_delay(dev, 100); pm_runtime_use_autosuspend(dev); pm_runtime_enable(dev); @@ -565,7 +603,7 @@ static struct platform_driver stm32_rng_driver = { .of_match_table = stm32_rng_match, }, .probe = stm32_rng_probe, - .remove_new = stm32_rng_remove, + .remove = stm32_rng_remove, }; module_platform_driver(stm32_rng_driver); diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c index 65b8260339f5..7174bfccc7b3 100644 --- a/drivers/char/hw_random/timeriomem-rng.c +++ b/drivers/char/hw_random/timeriomem-rng.c @@ -193,7 +193,7 @@ static struct platform_driver timeriomem_rng_driver = { .of_match_table = timeriomem_rng_match, }, .probe = timeriomem_rng_probe, - .remove_new = timeriomem_rng_remove, + .remove = timeriomem_rng_remove, }; module_platform_driver(timeriomem_rng_driver); diff --git a/drivers/char/hw_random/xgene-rng.c b/drivers/char/hw_random/xgene-rng.c index 642d13519464..39acaa503fec 100644 --- a/drivers/char/hw_random/xgene-rng.c +++ b/drivers/char/hw_random/xgene-rng.c @@ -375,7 +375,7 @@ MODULE_DEVICE_TABLE(of, xgene_rng_of_match); static struct platform_driver xgene_rng_driver = { .probe = xgene_rng_probe, - .remove_new = xgene_rng_remove, + .remove = xgene_rng_remove, .driver = { .name = "xgene-rng", .of_match_table = xgene_rng_of_match, |