From d0ebbc0c407a10485a8672ef370dfe55c666d57f Mon Sep 17 00:00:00 2001 From: Brijesh Singh Date: Thu, 6 Jul 2017 09:59:16 -0500 Subject: crypto: ccp - rename ccp driver initialize files as sp device CCP device initializes is now integerated into higher level SP device, to avoid the confusion lets rename the ccp driver initialization files (ccp-platform.c->sp-platform.c, ccp-pci.c->sp-pci.c). The patch does not make any functional changes other than renaming file and structures Signed-off-by: Brijesh Singh Acked-by: Gary R Hook Signed-off-by: Herbert Xu --- drivers/crypto/ccp/Makefile | 4 +- drivers/crypto/ccp/ccp-dev.h | 6 - drivers/crypto/ccp/ccp-pci.c | 276 -------------------------------------- drivers/crypto/ccp/ccp-platform.c | 256 ----------------------------------- drivers/crypto/ccp/sp-dev.c | 12 +- drivers/crypto/ccp/sp-pci.c | 276 ++++++++++++++++++++++++++++++++++++++ drivers/crypto/ccp/sp-platform.c | 256 +++++++++++++++++++++++++++++++++++ 7 files changed, 540 insertions(+), 546 deletions(-) delete mode 100644 drivers/crypto/ccp/ccp-pci.c delete mode 100644 drivers/crypto/ccp/ccp-platform.c create mode 100644 drivers/crypto/ccp/sp-pci.c create mode 100644 drivers/crypto/ccp/sp-platform.c (limited to 'drivers/crypto/ccp') diff --git a/drivers/crypto/ccp/Makefile b/drivers/crypto/ccp/Makefile index d2f1b5264362..5f2adc5facfe 100644 --- a/drivers/crypto/ccp/Makefile +++ b/drivers/crypto/ccp/Makefile @@ -1,12 +1,12 @@ obj-$(CONFIG_CRYPTO_DEV_CCP_DD) += ccp.o -ccp-objs := sp-dev.o ccp-platform.o +ccp-objs := sp-dev.o sp-platform.o ccp-$(CONFIG_CRYPTO_DEV_SP_CCP) += ccp-dev.o \ ccp-ops.o \ ccp-dev-v3.o \ ccp-dev-v5.o \ ccp-dmaengine.o \ ccp-debugfs.o -ccp-$(CONFIG_PCI) += ccp-pci.o +ccp-$(CONFIG_PCI) += sp-pci.o obj-$(CONFIG_CRYPTO_DEV_CCP_CRYPTO) += ccp-crypto.o ccp-crypto-objs := ccp-crypto-main.o \ diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h index 193f30973694..b959e2402aa2 100644 --- a/drivers/crypto/ccp/ccp-dev.h +++ b/drivers/crypto/ccp/ccp-dev.h @@ -626,12 +626,6 @@ struct ccp5_desc { struct dword7 dw7; }; -int ccp_pci_init(void); -void ccp_pci_exit(void); - -int ccp_platform_init(void); -void ccp_platform_exit(void); - void ccp_add_device(struct ccp_device *ccp); void ccp_del_device(struct ccp_device *ccp); diff --git a/drivers/crypto/ccp/ccp-pci.c b/drivers/crypto/ccp/ccp-pci.c deleted file mode 100644 index b29a093fd127..000000000000 --- a/drivers/crypto/ccp/ccp-pci.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * AMD Cryptographic Coprocessor (CCP) driver - * - * Copyright (C) 2013,2016 Advanced Micro Devices, Inc. - * - * Author: Tom Lendacky - * Author: Gary R Hook - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ccp-dev.h" - -#define MSIX_VECTORS 2 - -struct ccp_pci { - int msix_count; - struct msix_entry msix_entry[MSIX_VECTORS]; -}; - -static int ccp_get_msix_irqs(struct sp_device *sp) -{ - struct ccp_pci *ccp_pci = sp->dev_specific; - struct device *dev = sp->dev; - struct pci_dev *pdev = to_pci_dev(dev); - int v, ret; - - for (v = 0; v < ARRAY_SIZE(ccp_pci->msix_entry); v++) - ccp_pci->msix_entry[v].entry = v; - - ret = pci_enable_msix_range(pdev, ccp_pci->msix_entry, 1, v); - if (ret < 0) - return ret; - - ccp_pci->msix_count = ret; - sp->use_tasklet = true; - - sp->psp_irq = ccp_pci->msix_entry[0].vector; - sp->ccp_irq = (ccp_pci->msix_count > 1) ? ccp_pci->msix_entry[1].vector - : ccp_pci->msix_entry[0].vector; - return 0; -} - -static int ccp_get_msi_irq(struct sp_device *sp) -{ - struct device *dev = sp->dev; - struct pci_dev *pdev = to_pci_dev(dev); - int ret; - - ret = pci_enable_msi(pdev); - if (ret) - return ret; - - sp->ccp_irq = pdev->irq; - sp->psp_irq = pdev->irq; - - return 0; -} - -static int ccp_get_irqs(struct sp_device *sp) -{ - struct device *dev = sp->dev; - int ret; - - ret = ccp_get_msix_irqs(sp); - if (!ret) - return 0; - - /* Couldn't get MSI-X vectors, try MSI */ - dev_notice(dev, "could not enable MSI-X (%d), trying MSI\n", ret); - ret = ccp_get_msi_irq(sp); - if (!ret) - return 0; - - /* Couldn't get MSI interrupt */ - dev_notice(dev, "could not enable MSI (%d)\n", ret); - - return ret; -} - -static void ccp_free_irqs(struct sp_device *sp) -{ - struct ccp_pci *ccp_pci = sp->dev_specific; - struct device *dev = sp->dev; - struct pci_dev *pdev = to_pci_dev(dev); - - if (ccp_pci->msix_count) - pci_disable_msix(pdev); - else if (sp->psp_irq) - pci_disable_msi(pdev); - - sp->ccp_irq = 0; - sp->psp_irq = 0; -} - -static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) -{ - struct sp_device *sp; - struct ccp_pci *ccp_pci; - struct device *dev = &pdev->dev; - void __iomem * const *iomap_table; - int bar_mask; - int ret; - - ret = -ENOMEM; - sp = sp_alloc_struct(dev); - if (!sp) - goto e_err; - - ccp_pci = devm_kzalloc(dev, sizeof(*ccp_pci), GFP_KERNEL); - if (!ccp_pci) - goto e_err; - - sp->dev_specific = ccp_pci; - sp->dev_vdata = (struct sp_dev_vdata *)id->driver_data; - if (!sp->dev_vdata) { - ret = -ENODEV; - dev_err(dev, "missing driver data\n"); - goto e_err; - } - - ret = pcim_enable_device(pdev); - if (ret) { - dev_err(dev, "pcim_enable_device failed (%d)\n", ret); - goto e_err; - } - - bar_mask = pci_select_bars(pdev, IORESOURCE_MEM); - ret = pcim_iomap_regions(pdev, bar_mask, "ccp"); - if (ret) { - dev_err(dev, "pcim_iomap_regions failed (%d)\n", ret); - goto e_err; - } - - iomap_table = pcim_iomap_table(pdev); - if (!iomap_table) { - dev_err(dev, "pcim_iomap_table failed\n"); - ret = -ENOMEM; - goto e_err; - } - - sp->io_map = iomap_table[sp->dev_vdata->bar]; - if (!sp->io_map) { - dev_err(dev, "ioremap failed\n"); - ret = -ENOMEM; - goto e_err; - } - - ret = ccp_get_irqs(sp); - if (ret) - goto e_err; - - pci_set_master(pdev); - - ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); - if (ret) { - ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); - if (ret) { - dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", - ret); - goto e_err; - } - } - - dev_set_drvdata(dev, sp); - - ret = sp_init(sp); - if (ret) - goto e_err; - - dev_notice(dev, "enabled\n"); - - return 0; - -e_err: - dev_notice(dev, "initialization failed\n"); - return ret; -} - -static void ccp_pci_remove(struct pci_dev *pdev) -{ - struct device *dev = &pdev->dev; - struct sp_device *sp = dev_get_drvdata(dev); - - if (!sp) - return; - - sp_destroy(sp); - - ccp_free_irqs(sp); - - dev_notice(dev, "disabled\n"); -} - -#ifdef CONFIG_PM -static int ccp_pci_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct device *dev = &pdev->dev; - struct sp_device *sp = dev_get_drvdata(dev); - - return sp_suspend(sp, state); -} - -static int ccp_pci_resume(struct pci_dev *pdev) -{ - struct device *dev = &pdev->dev; - struct sp_device *sp = dev_get_drvdata(dev); - - return sp_resume(sp); -} -#endif - -static const struct sp_dev_vdata dev_vdata[] = { - { - .bar = 2, -#ifdef CONFIG_CRYPTO_DEV_SP_CCP - .ccp_vdata = &ccpv3, -#endif - }, - { - .bar = 2, -#ifdef CONFIG_CRYPTO_DEV_SP_CCP - .ccp_vdata = &ccpv5a, -#endif - }, - { - .bar = 2, -#ifdef CONFIG_CRYPTO_DEV_SP_CCP - .ccp_vdata = &ccpv5b, -#endif - }, -}; -static const struct pci_device_id ccp_pci_table[] = { - { PCI_VDEVICE(AMD, 0x1537), (kernel_ulong_t)&dev_vdata[0] }, - { PCI_VDEVICE(AMD, 0x1456), (kernel_ulong_t)&dev_vdata[1] }, - { PCI_VDEVICE(AMD, 0x1468), (kernel_ulong_t)&dev_vdata[2] }, - /* Last entry must be zero */ - { 0, } -}; -MODULE_DEVICE_TABLE(pci, ccp_pci_table); - -static struct pci_driver ccp_pci_driver = { - .name = "ccp", - .id_table = ccp_pci_table, - .probe = ccp_pci_probe, - .remove = ccp_pci_remove, -#ifdef CONFIG_PM - .suspend = ccp_pci_suspend, - .resume = ccp_pci_resume, -#endif -}; - -int ccp_pci_init(void) -{ - return pci_register_driver(&ccp_pci_driver); -} - -void ccp_pci_exit(void) -{ - pci_unregister_driver(&ccp_pci_driver); -} diff --git a/drivers/crypto/ccp/ccp-platform.c b/drivers/crypto/ccp/ccp-platform.c deleted file mode 100644 index 04a1cc42dbb2..000000000000 --- a/drivers/crypto/ccp/ccp-platform.c +++ /dev/null @@ -1,256 +0,0 @@ -/* - * AMD Cryptographic Coprocessor (CCP) driver - * - * Copyright (C) 2014,2016 Advanced Micro Devices, Inc. - * - * Author: Tom Lendacky - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ccp-dev.h" - -struct ccp_platform { - int coherent; - unsigned int irq_count; -}; - -static const struct acpi_device_id ccp_acpi_match[]; -static const struct of_device_id ccp_of_match[]; - -static struct sp_dev_vdata *ccp_get_of_version(struct platform_device *pdev) -{ -#ifdef CONFIG_OF - const struct of_device_id *match; - - match = of_match_node(ccp_of_match, pdev->dev.of_node); - if (match && match->data) - return (struct sp_dev_vdata *)match->data; -#endif - return NULL; -} - -static struct sp_dev_vdata *ccp_get_acpi_version(struct platform_device *pdev) -{ -#ifdef CONFIG_ACPI - const struct acpi_device_id *match; - - match = acpi_match_device(ccp_acpi_match, &pdev->dev); - if (match && match->driver_data) - return (struct sp_dev_vdata *)match->driver_data; -#endif - return NULL; -} - -static int ccp_get_irqs(struct sp_device *sp) -{ - struct ccp_platform *ccp_platform = sp->dev_specific; - struct device *dev = sp->dev; - struct platform_device *pdev = to_platform_device(dev); - unsigned int i, count; - int ret; - - for (i = 0, count = 0; i < pdev->num_resources; i++) { - struct resource *res = &pdev->resource[i]; - - if (resource_type(res) == IORESOURCE_IRQ) - count++; - } - - ccp_platform->irq_count = count; - - ret = platform_get_irq(pdev, 0); - if (ret < 0) { - dev_notice(dev, "unable to get IRQ (%d)\n", ret); - return ret; - } - - sp->psp_irq = ret; - if (count == 1) { - sp->ccp_irq = ret; - } else { - ret = platform_get_irq(pdev, 1); - if (ret < 0) { - dev_notice(dev, "unable to get IRQ (%d)\n", ret); - return ret; - } - - sp->ccp_irq = ret; - } - - return 0; -} - -static int ccp_platform_probe(struct platform_device *pdev) -{ - struct sp_device *sp; - struct ccp_platform *ccp_platform; - struct device *dev = &pdev->dev; - enum dev_dma_attr attr; - struct resource *ior; - int ret; - - ret = -ENOMEM; - sp = sp_alloc_struct(dev); - if (!sp) - goto e_err; - - ccp_platform = devm_kzalloc(dev, sizeof(*ccp_platform), GFP_KERNEL); - if (!ccp_platform) - goto e_err; - - sp->dev_specific = ccp_platform; - sp->dev_vdata = pdev->dev.of_node ? ccp_get_of_version(pdev) - : ccp_get_acpi_version(pdev); - if (!sp->dev_vdata) { - ret = -ENODEV; - dev_err(dev, "missing driver data\n"); - goto e_err; - } - - ior = platform_get_resource(pdev, IORESOURCE_MEM, 0); - sp->io_map = devm_ioremap_resource(dev, ior); - if (IS_ERR(sp->io_map)) { - ret = PTR_ERR(sp->io_map); - goto e_err; - } - - attr = device_get_dma_attr(dev); - if (attr == DEV_DMA_NOT_SUPPORTED) { - dev_err(dev, "DMA is not supported"); - goto e_err; - } - - ccp_platform->coherent = (attr == DEV_DMA_COHERENT); - if (ccp_platform->coherent) - sp->axcache = CACHE_WB_NO_ALLOC; - else - sp->axcache = CACHE_NONE; - - ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); - if (ret) { - dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", ret); - goto e_err; - } - - ret = ccp_get_irqs(sp); - if (ret) - goto e_err; - - dev_set_drvdata(dev, sp); - - ret = sp_init(sp); - if (ret) - goto e_err; - - dev_notice(dev, "enabled\n"); - - return 0; - -e_err: - dev_notice(dev, "initialization failed\n"); - return ret; -} - -static int ccp_platform_remove(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct sp_device *sp = dev_get_drvdata(dev); - - sp_destroy(sp); - - dev_notice(dev, "disabled\n"); - - return 0; -} - -#ifdef CONFIG_PM -static int ccp_platform_suspend(struct platform_device *pdev, - pm_message_t state) -{ - struct device *dev = &pdev->dev; - struct sp_device *sp = dev_get_drvdata(dev); - - return sp_suspend(sp, state); -} - -static int ccp_platform_resume(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct sp_device *sp = dev_get_drvdata(dev); - - return sp_resume(sp); -} -#endif - -static const struct sp_dev_vdata dev_vdata[] = { - { - .bar = 0, -#ifdef CONFIG_CRYPTO_DEV_SP_CCP - .ccp_vdata = &ccpv3_platform, -#endif - }, -}; - -#ifdef CONFIG_ACPI -static const struct acpi_device_id ccp_acpi_match[] = { - { "AMDI0C00", (kernel_ulong_t)&dev_vdata[0] }, - { }, -}; -MODULE_DEVICE_TABLE(acpi, ccp_acpi_match); -#endif - -#ifdef CONFIG_OF -static const struct of_device_id ccp_of_match[] = { - { .compatible = "amd,ccp-seattle-v1a", - .data = (const void *)&dev_vdata[0] }, - { }, -}; -MODULE_DEVICE_TABLE(of, ccp_of_match); -#endif - -static struct platform_driver ccp_platform_driver = { - .driver = { - .name = "ccp", -#ifdef CONFIG_ACPI - .acpi_match_table = ccp_acpi_match, -#endif -#ifdef CONFIG_OF - .of_match_table = ccp_of_match, -#endif - }, - .probe = ccp_platform_probe, - .remove = ccp_platform_remove, -#ifdef CONFIG_PM - .suspend = ccp_platform_suspend, - .resume = ccp_platform_resume, -#endif -}; - -int ccp_platform_init(void) -{ - return platform_driver_register(&ccp_platform_driver); -} - -void ccp_platform_exit(void) -{ - platform_driver_unregister(&ccp_platform_driver); -} diff --git a/drivers/crypto/ccp/sp-dev.c b/drivers/crypto/ccp/sp-dev.c index 7e30773443e9..1e5ffad4437b 100644 --- a/drivers/crypto/ccp/sp-dev.c +++ b/drivers/crypto/ccp/sp-dev.c @@ -242,13 +242,13 @@ static int __init sp_mod_init(void) #ifdef CONFIG_X86 int ret; - ret = ccp_pci_init(); + ret = sp_pci_init(); if (ret) return ret; /* Don't leave the driver loaded if init failed */ if (ccp_present() != 0) { - ccp_pci_exit(); + sp_pci_exit(); return -ENODEV; } @@ -258,13 +258,13 @@ static int __init sp_mod_init(void) #ifdef CONFIG_ARM64 int ret; - ret = ccp_platform_init(); + ret = sp_platform_init(); if (ret) return ret; /* Don't leave the driver loaded if init failed */ if (ccp_present() != 0) { - ccp_platform_exit(); + sp_platform_exit(); return -ENODEV; } @@ -277,11 +277,11 @@ static int __init sp_mod_init(void) static void __exit sp_mod_exit(void) { #ifdef CONFIG_X86 - ccp_pci_exit(); + sp_pci_exit(); #endif #ifdef CONFIG_ARM64 - ccp_platform_exit(); + sp_platform_exit(); #endif } diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c new file mode 100644 index 000000000000..9859aa683a28 --- /dev/null +++ b/drivers/crypto/ccp/sp-pci.c @@ -0,0 +1,276 @@ +/* + * AMD Secure Processor device driver + * + * Copyright (C) 2013,2016 Advanced Micro Devices, Inc. + * + * Author: Tom Lendacky + * Author: Gary R Hook + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ccp-dev.h" + +#define MSIX_VECTORS 2 + +struct sp_pci { + int msix_count; + struct msix_entry msix_entry[MSIX_VECTORS]; +}; + +static int sp_get_msix_irqs(struct sp_device *sp) +{ + struct sp_pci *sp_pci = sp->dev_specific; + struct device *dev = sp->dev; + struct pci_dev *pdev = to_pci_dev(dev); + int v, ret; + + for (v = 0; v < ARRAY_SIZE(sp_pci->msix_entry); v++) + sp_pci->msix_entry[v].entry = v; + + ret = pci_enable_msix_range(pdev, sp_pci->msix_entry, 1, v); + if (ret < 0) + return ret; + + sp_pci->msix_count = ret; + sp->use_tasklet = true; + + sp->psp_irq = sp_pci->msix_entry[0].vector; + sp->ccp_irq = (sp_pci->msix_count > 1) ? sp_pci->msix_entry[1].vector + : sp_pci->msix_entry[0].vector; + return 0; +} + +static int sp_get_msi_irq(struct sp_device *sp) +{ + struct device *dev = sp->dev; + struct pci_dev *pdev = to_pci_dev(dev); + int ret; + + ret = pci_enable_msi(pdev); + if (ret) + return ret; + + sp->ccp_irq = pdev->irq; + sp->psp_irq = pdev->irq; + + return 0; +} + +static int sp_get_irqs(struct sp_device *sp) +{ + struct device *dev = sp->dev; + int ret; + + ret = sp_get_msix_irqs(sp); + if (!ret) + return 0; + + /* Couldn't get MSI-X vectors, try MSI */ + dev_notice(dev, "could not enable MSI-X (%d), trying MSI\n", ret); + ret = sp_get_msi_irq(sp); + if (!ret) + return 0; + + /* Couldn't get MSI interrupt */ + dev_notice(dev, "could not enable MSI (%d)\n", ret); + + return ret; +} + +static void sp_free_irqs(struct sp_device *sp) +{ + struct sp_pci *sp_pci = sp->dev_specific; + struct device *dev = sp->dev; + struct pci_dev *pdev = to_pci_dev(dev); + + if (sp_pci->msix_count) + pci_disable_msix(pdev); + else if (sp->psp_irq) + pci_disable_msi(pdev); + + sp->ccp_irq = 0; + sp->psp_irq = 0; +} + +static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct sp_device *sp; + struct sp_pci *sp_pci; + struct device *dev = &pdev->dev; + void __iomem * const *iomap_table; + int bar_mask; + int ret; + + ret = -ENOMEM; + sp = sp_alloc_struct(dev); + if (!sp) + goto e_err; + + sp_pci = devm_kzalloc(dev, sizeof(*sp_pci), GFP_KERNEL); + if (!sp_pci) + goto e_err; + + sp->dev_specific = sp_pci; + sp->dev_vdata = (struct sp_dev_vdata *)id->driver_data; + if (!sp->dev_vdata) { + ret = -ENODEV; + dev_err(dev, "missing driver data\n"); + goto e_err; + } + + ret = pcim_enable_device(pdev); + if (ret) { + dev_err(dev, "pcim_enable_device failed (%d)\n", ret); + goto e_err; + } + + bar_mask = pci_select_bars(pdev, IORESOURCE_MEM); + ret = pcim_iomap_regions(pdev, bar_mask, "ccp"); + if (ret) { + dev_err(dev, "pcim_iomap_regions failed (%d)\n", ret); + goto e_err; + } + + iomap_table = pcim_iomap_table(pdev); + if (!iomap_table) { + dev_err(dev, "pcim_iomap_table failed\n"); + ret = -ENOMEM; + goto e_err; + } + + sp->io_map = iomap_table[sp->dev_vdata->bar]; + if (!sp->io_map) { + dev_err(dev, "ioremap failed\n"); + ret = -ENOMEM; + goto e_err; + } + + ret = sp_get_irqs(sp); + if (ret) + goto e_err; + + pci_set_master(pdev); + + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); + if (ret) { + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); + if (ret) { + dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", + ret); + goto e_err; + } + } + + dev_set_drvdata(dev, sp); + + ret = sp_init(sp); + if (ret) + goto e_err; + + dev_notice(dev, "enabled\n"); + + return 0; + +e_err: + dev_notice(dev, "initialization failed\n"); + return ret; +} + +static void sp_pci_remove(struct pci_dev *pdev) +{ + struct device *dev = &pdev->dev; + struct sp_device *sp = dev_get_drvdata(dev); + + if (!sp) + return; + + sp_destroy(sp); + + sp_free_irqs(sp); + + dev_notice(dev, "disabled\n"); +} + +#ifdef CONFIG_PM +static int sp_pci_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct device *dev = &pdev->dev; + struct sp_device *sp = dev_get_drvdata(dev); + + return sp_suspend(sp, state); +} + +static int sp_pci_resume(struct pci_dev *pdev) +{ + struct device *dev = &pdev->dev; + struct sp_device *sp = dev_get_drvdata(dev); + + return sp_resume(sp); +} +#endif + +static const struct sp_dev_vdata dev_vdata[] = { + { + .bar = 2, +#ifdef CONFIG_CRYPTO_DEV_SP_CCP + .ccp_vdata = &ccpv3, +#endif + }, + { + .bar = 2, +#ifdef CONFIG_CRYPTO_DEV_SP_CCP + .ccp_vdata = &ccpv5a, +#endif + }, + { + .bar = 2, +#ifdef CONFIG_CRYPTO_DEV_SP_CCP + .ccp_vdata = &ccpv5b, +#endif + }, +}; +static const struct pci_device_id sp_pci_table[] = { + { PCI_VDEVICE(AMD, 0x1537), (kernel_ulong_t)&dev_vdata[0] }, + { PCI_VDEVICE(AMD, 0x1456), (kernel_ulong_t)&dev_vdata[1] }, + { PCI_VDEVICE(AMD, 0x1468), (kernel_ulong_t)&dev_vdata[2] }, + /* Last entry must be zero */ + { 0, } +}; +MODULE_DEVICE_TABLE(pci, sp_pci_table); + +static struct pci_driver sp_pci_driver = { + .name = "ccp", + .id_table = sp_pci_table, + .probe = sp_pci_probe, + .remove = sp_pci_remove, +#ifdef CONFIG_PM + .suspend = sp_pci_suspend, + .resume = sp_pci_resume, +#endif +}; + +int sp_pci_init(void) +{ + return pci_register_driver(&sp_pci_driver); +} + +void sp_pci_exit(void) +{ + pci_unregister_driver(&sp_pci_driver); +} diff --git a/drivers/crypto/ccp/sp-platform.c b/drivers/crypto/ccp/sp-platform.c new file mode 100644 index 000000000000..71734f254fd1 --- /dev/null +++ b/drivers/crypto/ccp/sp-platform.c @@ -0,0 +1,256 @@ +/* + * AMD Secure Processor device driver + * + * Copyright (C) 2014,2016 Advanced Micro Devices, Inc. + * + * Author: Tom Lendacky + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ccp-dev.h" + +struct sp_platform { + int coherent; + unsigned int irq_count; +}; + +static const struct acpi_device_id sp_acpi_match[]; +static const struct of_device_id sp_of_match[]; + +static struct sp_dev_vdata *sp_get_of_version(struct platform_device *pdev) +{ +#ifdef CONFIG_OF + const struct of_device_id *match; + + match = of_match_node(sp_of_match, pdev->dev.of_node); + if (match && match->data) + return (struct sp_dev_vdata *)match->data; +#endif + return NULL; +} + +static struct sp_dev_vdata *sp_get_acpi_version(struct platform_device *pdev) +{ +#ifdef CONFIG_ACPI + const struct acpi_device_id *match; + + match = acpi_match_device(sp_acpi_match, &pdev->dev); + if (match && match->driver_data) + return (struct sp_dev_vdata *)match->driver_data; +#endif + return NULL; +} + +static int sp_get_irqs(struct sp_device *sp) +{ + struct sp_platform *sp_platform = sp->dev_specific; + struct device *dev = sp->dev; + struct platform_device *pdev = to_platform_device(dev); + unsigned int i, count; + int ret; + + for (i = 0, count = 0; i < pdev->num_resources; i++) { + struct resource *res = &pdev->resource[i]; + + if (resource_type(res) == IORESOURCE_IRQ) + count++; + } + + sp_platform->irq_count = count; + + ret = platform_get_irq(pdev, 0); + if (ret < 0) { + dev_notice(dev, "unable to get IRQ (%d)\n", ret); + return ret; + } + + sp->psp_irq = ret; + if (count == 1) { + sp->ccp_irq = ret; + } else { + ret = platform_get_irq(pdev, 1); + if (ret < 0) { + dev_notice(dev, "unable to get IRQ (%d)\n", ret); + return ret; + } + + sp->ccp_irq = ret; + } + + return 0; +} + +static int sp_platform_probe(struct platform_device *pdev) +{ + struct sp_device *sp; + struct sp_platform *sp_platform; + struct device *dev = &pdev->dev; + enum dev_dma_attr attr; + struct resource *ior; + int ret; + + ret = -ENOMEM; + sp = sp_alloc_struct(dev); + if (!sp) + goto e_err; + + sp_platform = devm_kzalloc(dev, sizeof(*sp_platform), GFP_KERNEL); + if (!sp_platform) + goto e_err; + + sp->dev_specific = sp_platform; + sp->dev_vdata = pdev->dev.of_node ? sp_get_of_version(pdev) + : sp_get_acpi_version(pdev); + if (!sp->dev_vdata) { + ret = -ENODEV; + dev_err(dev, "missing driver data\n"); + goto e_err; + } + + ior = platform_get_resource(pdev, IORESOURCE_MEM, 0); + sp->io_map = devm_ioremap_resource(dev, ior); + if (IS_ERR(sp->io_map)) { + ret = PTR_ERR(sp->io_map); + goto e_err; + } + + attr = device_get_dma_attr(dev); + if (attr == DEV_DMA_NOT_SUPPORTED) { + dev_err(dev, "DMA is not supported"); + goto e_err; + } + + sp_platform->coherent = (attr == DEV_DMA_COHERENT); + if (sp_platform->coherent) + sp->axcache = CACHE_WB_NO_ALLOC; + else + sp->axcache = CACHE_NONE; + + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); + if (ret) { + dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", ret); + goto e_err; + } + + ret = sp_get_irqs(sp); + if (ret) + goto e_err; + + dev_set_drvdata(dev, sp); + + ret = sp_init(sp); + if (ret) + goto e_err; + + dev_notice(dev, "enabled\n"); + + return 0; + +e_err: + dev_notice(dev, "initialization failed\n"); + return ret; +} + +static int sp_platform_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct sp_device *sp = dev_get_drvdata(dev); + + sp_destroy(sp); + + dev_notice(dev, "disabled\n"); + + return 0; +} + +#ifdef CONFIG_PM +static int sp_platform_suspend(struct platform_device *pdev, + pm_message_t state) +{ + struct device *dev = &pdev->dev; + struct sp_device *sp = dev_get_drvdata(dev); + + return sp_suspend(sp, state); +} + +static int sp_platform_resume(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct sp_device *sp = dev_get_drvdata(dev); + + return sp_resume(sp); +} +#endif + +static const struct sp_dev_vdata dev_vdata[] = { + { + .bar = 0, +#ifdef CONFIG_CRYPTO_DEV_SP_CCP + .ccp_vdata = &ccpv3_platform, +#endif + }, +}; + +#ifdef CONFIG_ACPI +static const struct acpi_device_id sp_acpi_match[] = { + { "AMDI0C00", (kernel_ulong_t)&dev_vdata[0] }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, sp_acpi_match); +#endif + +#ifdef CONFIG_OF +static const struct of_device_id sp_of_match[] = { + { .compatible = "amd,ccp-seattle-v1a", + .data = (const void *)&dev_vdata[0] }, + { }, +}; +MODULE_DEVICE_TABLE(of, sp_of_match); +#endif + +static struct platform_driver sp_platform_driver = { + .driver = { + .name = "ccp", +#ifdef CONFIG_ACPI + .acpi_match_table = sp_acpi_match, +#endif +#ifdef CONFIG_OF + .of_match_table = sp_of_match, +#endif + }, + .probe = sp_platform_probe, + .remove = sp_platform_remove, +#ifdef CONFIG_PM + .suspend = sp_platform_suspend, + .resume = sp_platform_resume, +#endif +}; + +int sp_platform_init(void) +{ + return platform_driver_register(&sp_platform_driver); +} + +void sp_platform_exit(void) +{ + platform_driver_unregister(&sp_platform_driver); +} -- cgit v1.2.3