diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-17 09:33:39 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-17 09:33:39 -0700 |
commit | 9a07a7968407e20fe87ed6b5eb6a6000e4819492 (patch) | |
tree | 35bd04d937c731d8aad1768193ace3518f985965 /drivers | |
parent | 16490980e396fac079248b23b1dd81e7d48bebf3 (diff) | |
parent | 256b1cfb9a346bb4808cd27b7b8f9b120f96491e (diff) |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu:
"API:
- Crypto self tests can now be disabled at boot/run time.
- Add async support to algif_aead.
Algorithms:
- A large number of fixes to MPI from Nicolai Stange.
- Performance improvement for HMAC DRBG.
Drivers:
- Use generic crypto engine in omap-des.
- Merge ppc4xx-rng and crypto4xx drivers.
- Fix lockups in sun4i-ss driver by disabling IRQs.
- Add DMA engine support to ccp.
- Reenable talitos hash algorithms.
- Add support for Hisilicon SoC RNG.
- Add basic crypto driver for the MXC SCC.
Others:
- Do not allocate crypto hash tfm in NORECLAIM context in ecryptfs"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (77 commits)
crypto: qat - change the adf_ctl_stop_devices to void
crypto: caam - fix caam_jr_alloc() ret code
crypto: vmx - comply with ABIs that specify vrsave as reserved.
crypto: testmgr - Add a flag allowing the self-tests to be disabled at runtime.
crypto: ccp - constify ccp_actions structure
crypto: marvell/cesa - Use dma_pool_zalloc
crypto: qat - make adf_vf_isr.c dependant on IOV config
crypto: qat - Fix typo in comments
lib: asn1_decoder - add MODULE_LICENSE("GPL")
crypto: omap-sham - Use dma_request_chan() for requesting DMA channel
crypto: omap-des - Use dma_request_chan() for requesting DMA channel
crypto: omap-aes - Use dma_request_chan() for requesting DMA channel
crypto: omap-des - Integrate with the crypto engine framework
crypto: s5p-sss - fix incorrect usage of scatterlists api
crypto: s5p-sss - Fix missed interrupts when working with 8 kB blocks
crypto: s5p-sss - Use common BIT macro
crypto: mxc-scc - fix unwinding in mxc_scc_crypto_register()
crypto: mxc-scc - signedness bugs in mxc_scc_ablkcipher_req_init()
crypto: talitos - fix ahash algorithms registration
crypto: ccp - Ensure all dependencies are specified
...
Diffstat (limited to 'drivers')
53 files changed, 2657 insertions, 614 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index 67ee8b08ab53..ac51149e9777 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -268,19 +268,6 @@ config HW_RANDOM_NOMADIK If unsure, say Y. -config HW_RANDOM_PPC4XX - tristate "PowerPC 4xx generic true random number generator support" - depends on PPC && 4xx - default HW_RANDOM - ---help--- - This driver provides the kernel-side support for the TRNG hardware - found in the security function of some PowerPC 4xx SoCs. - - To compile this driver as a module, choose M here: the - module will be called ppc4xx-rng. - - If unsure, say N. - config HW_RANDOM_PSERIES tristate "pSeries HW Random Number Generator support" depends on PPC64 && IBMVIO @@ -309,7 +296,8 @@ config HW_RANDOM_POWERNV config HW_RANDOM_EXYNOS tristate "EXYNOS HW random number generator support" - depends on ARCH_EXYNOS + depends on ARCH_EXYNOS || COMPILE_TEST + depends on HAS_IOMEM default HW_RANDOM ---help--- This driver provides kernel-side support for the Random Number @@ -333,6 +321,19 @@ config HW_RANDOM_TPM If unsure, say Y. +config HW_RANDOM_HISI + tristate "Hisilicon Random Number Generator support" + depends on HW_RANDOM && ARCH_HISI + default HW_RANDOM + ---help--- + This driver provides kernel-side support for the Random Number + Generator hardware found on Hisilicon Hip04 and Hip05 SoC. + + To compile this driver as a module, choose M here: the + module will be called hisi-rng. + + If unsure, say Y. + config HW_RANDOM_MSM tristate "Qualcomm SoCs Random Number Generator support" depends on HW_RANDOM && ARCH_QCOM diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile index f5a6fa7690e7..63022b49f160 100644 --- a/drivers/char/hw_random/Makefile +++ b/drivers/char/hw_random/Makefile @@ -22,10 +22,10 @@ obj-$(CONFIG_HW_RANDOM_TX4939) += tx4939-rng.o obj-$(CONFIG_HW_RANDOM_MXC_RNGA) += mxc-rnga.o obj-$(CONFIG_HW_RANDOM_OCTEON) += octeon-rng.o obj-$(CONFIG_HW_RANDOM_NOMADIK) += nomadik-rng.o -obj-$(CONFIG_HW_RANDOM_PPC4XX) += ppc4xx-rng.o obj-$(CONFIG_HW_RANDOM_PSERIES) += pseries-rng.o obj-$(CONFIG_HW_RANDOM_POWERNV) += powernv-rng.o obj-$(CONFIG_HW_RANDOM_EXYNOS) += exynos-rng.o +obj-$(CONFIG_HW_RANDOM_HISI) += hisi-rng.o obj-$(CONFIG_HW_RANDOM_TPM) += tpm-rng.o obj-$(CONFIG_HW_RANDOM_BCM2835) += bcm2835-rng.o obj-$(CONFIG_HW_RANDOM_IPROC_RNG200) += iproc-rng200.o diff --git a/drivers/char/hw_random/exynos-rng.c b/drivers/char/hw_random/exynos-rng.c index ada081232528..ed44561ea647 100644 --- a/drivers/char/hw_random/exynos-rng.c +++ b/drivers/char/hw_random/exynos-rng.c @@ -2,7 +2,7 @@ * exynos-rng.c - Random Number Generator driver for the exynos * * Copyright (C) 2012 Samsung Electronics - * Jonghwa Lee <jonghwa3.lee@smasung.com> + * Jonghwa Lee <jonghwa3.lee@samsung.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -77,7 +77,8 @@ static int exynos_init(struct hwrng *rng) pm_runtime_get_sync(exynos_rng->dev); ret = exynos_rng_configure(exynos_rng); - pm_runtime_put_noidle(exynos_rng->dev); + pm_runtime_mark_last_busy(exynos_rng->dev); + pm_runtime_put_autosuspend(exynos_rng->dev); return ret; } @@ -89,6 +90,7 @@ static int exynos_read(struct hwrng *rng, void *buf, struct exynos_rng, rng); u32 *data = buf; int retry = 100; + int ret = 4; pm_runtime_get_sync(exynos_rng->dev); @@ -97,23 +99,27 @@ static int exynos_read(struct hwrng *rng, void *buf, while (!(exynos_rng_readl(exynos_rng, EXYNOS_PRNG_STATUS_OFFSET) & PRNG_DONE) && --retry) cpu_relax(); - if (!retry) - return -ETIMEDOUT; + if (!retry) { + ret = -ETIMEDOUT; + goto out; + } exynos_rng_writel(exynos_rng, PRNG_DONE, EXYNOS_PRNG_STATUS_OFFSET); *data = exynos_rng_readl(exynos_rng, EXYNOS_PRNG_OUT1_OFFSET); +out: pm_runtime_mark_last_busy(exynos_rng->dev); pm_runtime_put_sync_autosuspend(exynos_rng->dev); - return 4; + return ret; } static int exynos_rng_probe(struct platform_device *pdev) { struct exynos_rng *exynos_rng; struct resource *res; + int ret; exynos_rng = devm_kzalloc(&pdev->dev, sizeof(struct exynos_rng), GFP_KERNEL); @@ -141,7 +147,21 @@ static int exynos_rng_probe(struct platform_device *pdev) pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_enable(&pdev->dev); - return devm_hwrng_register(&pdev->dev, &exynos_rng->rng); + ret = devm_hwrng_register(&pdev->dev, &exynos_rng->rng); + if (ret) { + pm_runtime_dont_use_autosuspend(&pdev->dev); + pm_runtime_disable(&pdev->dev); + } + + return ret; +} + +static int exynos_rng_remove(struct platform_device *pdev) +{ + pm_runtime_dont_use_autosuspend(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return 0; } static int __maybe_unused exynos_rng_runtime_suspend(struct device *dev) @@ -201,6 +221,7 @@ static struct platform_driver exynos_rng_driver = { .of_match_table = exynos_rng_dt_match, }, .probe = exynos_rng_probe, + .remove = exynos_rng_remove, }; module_platform_driver(exynos_rng_driver); diff --git a/drivers/char/hw_random/hisi-rng.c b/drivers/char/hw_random/hisi-rng.c new file mode 100644 index 000000000000..40d96572c591 --- /dev/null +++ b/drivers/char/hw_random/hisi-rng.c @@ -0,0 +1,126 @@ +/* + * Copyright (C) 2016 HiSilicon Co., Ltd. + * + * 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/err.h> +#include <linux/kernel.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/random.h> + +#define RNG_SEED 0x0 +#define RNG_CTRL 0x4 + #define RNG_SEED_SEL BIT(2) + #define RNG_RING_EN BIT(1) + #define RNG_EN BIT(0) +#define RNG_RAN_NUM 0x10 +#define RNG_PHY_SEED 0x14 + +#define to_hisi_rng(p) container_of(p, struct hisi_rng, rng) + +static int seed_sel; +module_param(seed_sel, int, S_IRUGO); +MODULE_PARM_DESC(seed_sel, "Auto reload seed. 0, use LFSR(default); 1, use ring oscillator."); + +struct hisi_rng { + void __iomem *base; + struct hwrng rng; +}; + +static int hisi_rng_init(struct hwrng *rng) +{ + struct hisi_rng *hrng = to_hisi_rng(rng); + int val = RNG_EN; + u32 seed; + + /* get a random number as initial seed */ + get_random_bytes(&seed, sizeof(seed)); + + writel_relaxed(seed, hrng->base + RNG_SEED); + + /** + * The seed is reload periodically, there are two choice + * of seeds, default seed using the value from LFSR, or + * will use seed generated by ring oscillator. + */ + if (seed_sel == 1) + val |= RNG_RING_EN | RNG_SEED_SEL; + + writel_relaxed(val, hrng->base + RNG_CTRL); + return 0; +} + +static void hisi_rng_cleanup(struct hwrng *rng) +{ + struct hisi_rng *hrng = to_hisi_rng(rng); + + writel_relaxed(0, hrng->base + RNG_CTRL); +} + +static int hisi_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait) +{ + struct hisi_rng *hrng = to_hisi_rng(rng); + u32 *data = buf; + + *data = readl_relaxed(hrng->base + RNG_RAN_NUM); + return 4; +} + +static int hisi_rng_probe(struct platform_device *pdev) +{ + struct hisi_rng *rng; + struct resource *res; + int ret; + + rng = devm_kzalloc(&pdev->dev, sizeof(*rng), GFP_KERNEL); + if (!rng) + return -ENOMEM; + + platform_set_drvdata(pdev, rng); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + rng->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(rng->base)) + return PTR_ERR(rng->base); + + rng->rng.name = pdev->name; + rng->rng.init = hisi_rng_init; + rng->rng.cleanup = hisi_rng_cleanup; + rng->rng.read = hisi_rng_read; + + ret = devm_hwrng_register(&pdev->dev, &rng->rng); + if (ret) { + dev_err(&pdev->dev, "failed to register hwrng\n"); + return ret; + } + + return 0; +} + +static const struct of_device_id hisi_rng_dt_ids[] = { + { .compatible = "hisilicon,hip04-rng" }, + { .compatible = "hisilicon,hip05-rng" }, + { } +}; +MODULE_DEVICE_TABLE(of, hisi_rng_dt_ids); + +static struct platform_driver hisi_rng_driver = { + .probe = hisi_rng_probe, + .driver = { + .name = "hisi-rng", + .of_match_table = of_match_ptr(hisi_rng_dt_ids), + }, +}; + +module_platform_driver(hisi_rng_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Kefeng Wang <wangkefeng.wang@huawei>"); +MODULE_DESCRIPTION("Hisilicon random number generator driver"); diff --git a/drivers/char/hw_random/ppc4xx-rng.c b/drivers/char/hw_random/ppc4xx-rng.c deleted file mode 100644 index c0db4387d2e2..000000000000 --- a/drivers/char/hw_random/ppc4xx-rng.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * Generic PowerPC 44x RNG driver - * - * Copyright 2011 IBM Corporation - * - * This program 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; version 2 of the License. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/hw_random.h> -#include <linux/delay.h> -#include <linux/of_address.h> -#include <linux/of_platform.h> -#include <asm/io.h> - -#define PPC4XX_TRNG_DEV_CTRL 0x60080 - -#define PPC4XX_TRNGE 0x00020000 -#define PPC4XX_TRNG_CTRL 0x0008 -#define PPC4XX_TRNG_CTRL_DALM 0x20 -#define PPC4XX_TRNG_STAT 0x0004 -#define PPC4XX_TRNG_STAT_B 0x1 -#define PPC4XX_TRNG_DATA 0x0000 - -#define MODULE_NAME "ppc4xx_rng" - -static int ppc4xx_rng_data_present(struct hwrng *rng, int wait) -{ - void __iomem *rng_regs = (void __iomem *) rng->priv; - int busy, i, present = 0; - - for (i = 0; i < 20; i++) { - busy = (in_le32(rng_regs + PPC4XX_TRNG_STAT) & PPC4XX_TRNG_STAT_B); - if (!busy || !wait) { - present = 1; - break; - } - udelay(10); - } - return present; -} - -static int ppc4xx_rng_data_read(struct hwrng *rng, u32 *data) -{ - void __iomem *rng_regs = (void __iomem *) rng->priv; - *data = in_le32(rng_regs + PPC4XX_TRNG_DATA); - return 4; -} - -static int ppc4xx_rng_enable(int enable) -{ - struct device_node *ctrl; - void __iomem *ctrl_reg; - int err = 0; - u32 val; - - /* Find the main crypto device node and map it to turn the TRNG on */ - ctrl = of_find_compatible_node(NULL, NULL, "amcc,ppc4xx-crypto"); - if (!ctrl) - return -ENODEV; - - ctrl_reg = of_iomap(ctrl, 0); - if (!ctrl_reg) { - err = -ENODEV; - goto out; - } - - val = in_le32(ctrl_reg + PPC4XX_TRNG_DEV_CTRL); - - if (enable) - val |= PPC4XX_TRNGE; - else - val = val & ~PPC4XX_TRNGE; - - out_le32(ctrl_reg + PPC4XX_TRNG_DEV_CTRL, val); - iounmap(ctrl_reg); - -out: - of_node_put(ctrl); - - return err; -} - -static struct hwrng ppc4xx_rng = { - .name = MODULE_NAME, - .data_present = ppc4xx_rng_data_present, - .data_read = ppc4xx_rng_data_read, -}; - -static int ppc4xx_rng_probe(struct platform_device *dev) -{ - void __iomem *rng_regs; - int err = 0; - - rng_regs = of_iomap(dev->dev.of_node, 0); - if (!rng_regs) - return -ENODEV; - - err = ppc4xx_rng_enable(1); - if (err) - return err; - - out_le32(rng_regs + PPC4XX_TRNG_CTRL, PPC4XX_TRNG_CTRL_DALM); - ppc4xx_rng.priv = (unsigned long) rng_regs; - - err = hwrng_register(&ppc4xx_rng); - - return err; -} - -static int ppc4xx_rng_remove(struct platform_device *dev) -{ - void __iomem *rng_regs = (void __iomem *) ppc4xx_rng.priv; - - hwrng_unregister(&ppc4xx_rng); - ppc4xx_rng_enable(0); - iounmap(rng_regs); - - return 0; -} - -static const struct of_device_id ppc4xx_rng_match[] = { - { .compatible = "ppc4xx-rng", }, - { .compatible = "amcc,ppc460ex-rng", }, - { .compatible = "amcc,ppc440epx-rng", }, - {}, -}; -MODULE_DEVICE_TABLE(of, ppc4xx_rng_match); - -static struct platform_driver ppc4xx_rng_driver = { - .driver = { - .name = MODULE_NAME, - .of_match_table = ppc4xx_rng_match, - }, - .probe = ppc4xx_rng_probe, - .remove = ppc4xx_rng_remove, -}; - -module_platform_driver(ppc4xx_rng_driver); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Josh Boyer <jwboyer@linux.vnet.ibm.com>"); -MODULE_DESCRIPTION("HW RNG driver for PPC 4xx processors"); diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 477fffdb4f49..d77ba2f12242 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -279,6 +279,14 @@ config CRYPTO_DEV_PPC4XX help This option allows you to have support for AMCC crypto acceleration. +config HW_RANDOM_PPC4XX + bool "PowerPC 4xx generic true random number generator support" + depends on CRYPTO_DEV_PPC4XX && HW_RANDOM + default y + ---help--- + This option provides the kernel-side support for the TRNG hardware + found in the security function of some PowerPC 4xx SoCs. + config CRYPTO_DEV_OMAP_SHAM tristate "Support for OMAP MD5/SHA1/SHA2 hw accelerator" depends on ARCH_OMAP2PLUS @@ -302,15 +310,16 @@ config CRYPTO_DEV_OMAP_AES want to use the OMAP module for AES algorithms. config CRYPTO_DEV_OMAP_DES - tristate "Support for OMAP DES3DES hw engine" + tristate "Support for OMAP DES/3DES hw engine" depends on ARCH_OMAP2PLUS select CRYPTO_DES select CRYPTO_BLKCIPHER + select CRYPTO_ENGINE help OMAP processors have DES/3DES module accelerator. Select this if you want to use the OMAP module for DES and 3DES algorithms. Currently - the ECB and CBC modes of operation supported by the driver. Also - accesses made on unaligned boundaries are also supported. + the ECB and CBC modes of operation are supported by the driver. Also + accesses made on unaligned boundaries are supported. config CRYPTO_DEV_PICOXCELL tristate "Support for picoXcell IPSEC and Layer2 crypto engines" @@ -340,9 +349,19 @@ config CRYPTO_DEV_SAHARA This option enables support for the SAHARA HW crypto accelerator found in some Freescale i.MX chips. +config CRYPTO_DEV_MXC_SCC + tristate "Support for Freescale Security Controller (SCC)" + depends on ARCH_MXC && OF + select CRYPTO_BLKCIPHER + select CRYPTO_DES + help + This option enables support for the Security Controller (SCC) + found in Freescale i.MX25 chips. + config CRYPTO_DEV_S5P tristate "Support for Samsung S5PV210/Exynos crypto accelerator" - depends on ARCH_S5PV210 || ARCH_EXYNOS + depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST + depends on HAS_IOMEM && HAS_DMA select CRYPTO_AES select CRYPTO_BLKCIPHER help diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index 713de9d11148..3c6432dd09d9 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -23,6 +23,7 @@ obj-$(CONFIG_CRYPTO_DEV_PICOXCELL) += picoxcell_crypto.o obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += amcc/ obj-$(CONFIG_CRYPTO_DEV_S5P) += s5p-sss.o obj-$(CONFIG_CRYPTO_DEV_SAHARA) += sahara.o +obj-$(CONFIG_CRYPTO_DEV_MXC_SCC) += mxc-scc.o obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o obj-$(CONFIG_CRYPTO_DEV_UX500) += ux500/ obj-$(CONFIG_CRYPTO_DEV_QAT) += qat/ diff --git a/drivers/crypto/amcc/Makefile b/drivers/crypto/amcc/Makefile index 5c0c62b65d69..b95539928fdf 100644 --- a/drivers/crypto/amcc/Makefile +++ b/drivers/crypto/amcc/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += crypto4xx.o crypto4xx-y := crypto4xx_core.o crypto4xx_alg.o crypto4xx_sa.o +crypto4xx-$(CONFIG_HW_RANDOM_PPC4XX) += crypto4xx_trng.o diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c index 62134c8a2260..dae1e39139e9 100644 --- a/drivers/crypto/amcc/crypto4xx_core.c +++ b/drivers/crypto/amcc/crypto4xx_core.c @@ -40,6 +40,7 @@ #include "crypto4xx_reg_def.h" #include "crypto4xx_core.h" #include "crypto4xx_sa.h" +#include "crypto4xx_trng.h" #define PPC4XX_SEC_VERSION_STR "0.5" @@ -1225,6 +1226,7 @@ static int crypto4xx_probe(struct platform_device *ofdev) if (rc) goto err_start_dev; + ppc4xx_trng_probe(core_dev); return 0; err_start_dev: @@ -1252,6 +1254,8 @@ static int crypto4xx_remove(struct platform_device *ofdev) struct device *dev = &ofdev->dev; struct crypto4xx_core_device *core_dev = dev_get_drvdata(dev); + ppc4xx_trng_remove(core_dev); + free_irq(core_dev->irq, dev); irq_dispose_mapping(core_dev->irq); @@ -1272,7 +1276,7 @@ MODULE_DEVICE_TABLE(of, crypto4xx_match); static struct platform_driver crypto4xx_driver = { .driver = { - .name = "crypto4xx", + .name = MODULE_NAME, .of_match_table = crypto4xx_match, }, .probe = crypto4xx_probe, @@ -1284,4 +1288,3 @@ module_platform_driver(crypto4xx_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("James Hsiao <jhsiao@amcc.com>"); MODULE_DESCRIPTION("Driver for AMCC PPC4xx crypto accelerator"); - diff --git a/drivers/crypto/amcc/crypto4xx_core.h b/drivers/crypto/amcc/crypto4xx_core.h index bac0bdeb4b5f..ecfdcfe3698d 100644 --- a/drivers/crypto/amcc/crypto4xx_core.h +++ b/drivers/crypto/amcc/crypto4xx_core.h @@ -24,6 +24,8 @@ #include <crypto/internal/hash.h> +#define MODULE_NAME "crypto4xx" + #define PPC460SX_SDR0_SRST 0x201 #define PPC405EX_SDR0_SRST 0x200 #define PPC460EX_SDR0_SRST 0x201 @@ -72,6 +74,7 @@ struct crypto4xx_device { char *name; u64 ce_phy_address; void __iomem *ce_base; + void __iomem *trng_base; void *pdr; /* base address of packet descriptor ring */ @@ -106,6 +109,7 @@ struct crypto4xx_core_device { struct device *device; struct platform_device *ofdev; struct crypto4xx_device *dev; + struct hwrng *trng; u32 int_status; u32 irq; struct tasklet_struct tasklet; diff --git a/drivers/crypto/amcc/crypto4xx_reg_def.h b/drivers/crypto/amcc/crypto4xx_reg_def.h index 5f5fbc0716ff..46fe57c8f6eb 100644 --- a/drivers/crypto/amcc/crypto4xx_reg_def.h +++ b/drivers/crypto/amcc/crypto4xx_reg_def.h @@ -125,6 +125,7 @@ #define PPC4XX_INTERRUPT_CLR 0x3ffff #define PPC4XX_PRNG_CTRL_AUTO_EN 0x3 #define PPC4XX_DC_3DES_EN 1 +#define PPC4XX_TRNG_EN 0x00020000 #define PPC4XX_INT_DESCR_CNT 4 #define PPC4XX_INT_TIMEOUT_CNT 0 #define PPC4XX_INT_CFG 1 diff --git a/drivers/crypto/amcc/crypto4xx_trng.c b/drivers/crypto/amcc/crypto4xx_trng.c new file mode 100644 index 000000000000..677ca17fd223 --- /dev/null +++ b/drivers/crypto/amcc/crypto4xx_trng.c @@ -0,0 +1,131 @@ +/* + * Generic PowerPC 44x RNG driver + * + * Copyright 2011 IBM Corporation + * + * This program 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; version 2 of the License. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/hw_random.h> +#include <linux/delay.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/io.h> + +#inclu |