* [PATCH v3 1/5] crypto: ccp - Use devres interface to allocate PCI/iomap and cleanup
2017-06-29 16:48 [PATCH v3 0/5] Introduce AMD Secure Processor device Brijesh Singh
@ 2017-06-29 16:48 ` Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 2/5] crypto: ccp - Introduce the AMD Secure Processor device Brijesh Singh
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Brijesh Singh @ 2017-06-29 16:48 UTC (permalink / raw)
To: linux-crypto; +Cc: gary.hook, herbert, davem, Brijesh Singh
Update pci and platform files to use devres interface to allocate the PCI
and iomap resources. Also add helper functions to consolicate module init,
exit and power mangagement code duplication.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
drivers/crypto/ccp/ccp-dev-v3.c | 7 +++
drivers/crypto/ccp/ccp-dev.c | 61 ++++++++++++++++++++
drivers/crypto/ccp/ccp-dev.h | 6 ++
drivers/crypto/ccp/ccp-pci.c | 114 +++++++++-----------------------------
drivers/crypto/ccp/ccp-platform.c | 56 ++-----------------
5 files changed, 106 insertions(+), 138 deletions(-)
diff --git a/drivers/crypto/ccp/ccp-dev-v3.c b/drivers/crypto/ccp/ccp-dev-v3.c
index 367c2e3..52aa88b 100644
--- a/drivers/crypto/ccp/ccp-dev-v3.c
+++ b/drivers/crypto/ccp/ccp-dev-v3.c
@@ -586,6 +586,13 @@ static const struct ccp_actions ccp3_actions = {
.irqhandler = ccp_irq_handler,
};
+const struct ccp_vdata ccpv3_platform = {
+ .version = CCP_VERSION(3, 0),
+ .setup = NULL,
+ .perform = &ccp3_actions,
+ .offset = 0,
+};
+
const struct ccp_vdata ccpv3 = {
.version = CCP_VERSION(3, 0),
.setup = NULL,
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
index 2506b50..abb3d68 100644
--- a/drivers/crypto/ccp/ccp-dev.c
+++ b/drivers/crypto/ccp/ccp-dev.c
@@ -538,8 +538,69 @@ bool ccp_queues_suspended(struct ccp_device *ccp)
return ccp->cmd_q_count == suspended;
}
+
+int ccp_dev_suspend(struct ccp_device *ccp, pm_message_t state)
+{
+ unsigned long flags;
+ unsigned int i;
+
+ spin_lock_irqsave(&ccp->cmd_lock, flags);
+
+ ccp->suspending = 1;
+
+ /* Wake all the queue kthreads to prepare for suspend */
+ for (i = 0; i < ccp->cmd_q_count; i++)
+ wake_up_process(ccp->cmd_q[i].kthread);
+
+ spin_unlock_irqrestore(&ccp->cmd_lock, flags);
+
+ /* Wait for all queue kthreads to say they're done */
+ while (!ccp_queues_suspended(ccp))
+ wait_event_interruptible(ccp->suspend_queue,
+ ccp_queues_suspended(ccp));
+
+ return 0;
+}
+
+int ccp_dev_resume(struct ccp_device *ccp)
+{
+ unsigned long flags;
+ unsigned int i;
+
+ spin_lock_irqsave(&ccp->cmd_lock, flags);
+
+ ccp->suspending = 0;
+
+ /* Wake up all the kthreads */
+ for (i = 0; i < ccp->cmd_q_count; i++) {
+ ccp->cmd_q[i].suspended = 0;
+ wake_up_process(ccp->cmd_q[i].kthread);
+ }
+
+ spin_unlock_irqrestore(&ccp->cmd_lock, flags);
+
+ return 0;
+}
#endif
+int ccp_dev_init(struct ccp_device *ccp)
+{
+ ccp->io_regs = ccp->io_map + ccp->vdata->offset;
+
+ if (ccp->vdata->setup)
+ ccp->vdata->setup(ccp);
+
+ return ccp->vdata->perform->init(ccp);
+}
+
+void ccp_dev_destroy(struct ccp_device *ccp)
+{
+ if (!ccp)
+ return;
+
+ ccp->vdata->perform->destroy(ccp);
+}
+
static int __init ccp_mod_init(void)
{
#ifdef CONFIG_X86
diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h
index a70154a..df2e76e 100644
--- a/drivers/crypto/ccp/ccp-dev.h
+++ b/drivers/crypto/ccp/ccp-dev.h
@@ -652,6 +652,11 @@ void ccp_dmaengine_unregister(struct ccp_device *ccp);
void ccp5_debugfs_setup(struct ccp_device *ccp);
void ccp5_debugfs_destroy(void);
+int ccp_dev_init(struct ccp_device *ccp);
+void ccp_dev_destroy(struct ccp_device *ccp);
+int ccp_dev_suspend(struct ccp_device *ccp, pm_message_t state);
+int ccp_dev_resume(struct ccp_device *ccp);
+
/* Structure for computation functions that are device-specific */
struct ccp_actions {
int (*aes)(struct ccp_op *);
@@ -679,6 +684,7 @@ struct ccp_vdata {
const unsigned int offset;
};
+extern const struct ccp_vdata ccpv3_platform;
extern const struct ccp_vdata ccpv3;
extern const struct ccp_vdata ccpv5a;
extern const struct ccp_vdata ccpv5b;
diff --git a/drivers/crypto/ccp/ccp-pci.c b/drivers/crypto/ccp/ccp-pci.c
index e880d4cf4..490ad0a 100644
--- a/drivers/crypto/ccp/ccp-pci.c
+++ b/drivers/crypto/ccp/ccp-pci.c
@@ -150,28 +150,13 @@ static void ccp_free_irqs(struct ccp_device *ccp)
ccp->irq = 0;
}
-static int ccp_find_mmio_area(struct ccp_device *ccp)
-{
- struct device *dev = ccp->dev;
- struct pci_dev *pdev = to_pci_dev(dev);
- resource_size_t io_len;
- unsigned long io_flags;
-
- io_flags = pci_resource_flags(pdev, ccp->vdata->bar);
- io_len = pci_resource_len(pdev, ccp->vdata->bar);
- if ((io_flags & IORESOURCE_MEM) &&
- (io_len >= (ccp->vdata->offset + 0x800)))
- return ccp->vdata->bar;
-
- return -EIO;
-}
-
static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct ccp_device *ccp;
struct ccp_pci *ccp_pci;
struct device *dev = &pdev->dev;
- unsigned int bar;
+ void __iomem * const *iomap_table;
+ int bar_mask;
int ret;
ret = -ENOMEM;
@@ -193,32 +178,34 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ccp->get_irq = ccp_get_irqs;
ccp->free_irq = ccp_free_irqs;
- ret = pci_request_regions(pdev, "ccp");
+ ret = pcim_enable_device(pdev);
if (ret) {
- dev_err(dev, "pci_request_regions failed (%d)\n", ret);
+ dev_err(dev, "pcim_enable_device failed (%d)\n", ret);
goto e_err;
}
- ret = pci_enable_device(pdev);
+ bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
+ ret = pcim_iomap_regions(pdev, bar_mask, "ccp");
if (ret) {
- dev_err(dev, "pci_enable_device failed (%d)\n", ret);
- goto e_regions;
+ dev_err(dev, "pcim_iomap_regions failed (%d)\n", ret);
+ goto e_err;
}
- pci_set_master(pdev);
-
- ret = ccp_find_mmio_area(ccp);
- if (ret < 0)
- goto e_device;
- bar = ret;
+ iomap_table = pcim_iomap_table(pdev);
+ if (!iomap_table) {
+ dev_err(dev, "pcim_iomap_table failed\n");
+ ret = -ENOMEM;
+ goto e_err;
+ }
- ret = -EIO;
- ccp->io_map = pci_iomap(pdev, bar, 0);
+ ccp->io_map = iomap_table[ccp->vdata->bar];
if (!ccp->io_map) {
- dev_err(dev, "pci_iomap failed\n");
- goto e_device;
+ dev_err(dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto e_err;
}
- ccp->io_regs = ccp->io_map + ccp->vdata->offset;
+
+ pci_set_master(pdev);
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
if (ret) {
@@ -226,32 +213,20 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (ret) {
dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n",
ret);
- goto e_iomap;
+ goto e_err;
}
}
dev_set_drvdata(dev, ccp);
- if (ccp->vdata->setup)
- ccp->vdata->setup(ccp);
-
- ret = ccp->vdata->perform->init(ccp);
+ ret = ccp_dev_init(ccp);
if (ret)
- goto e_iomap;
+ goto e_err;
dev_notice(dev, "enabled\n");
return 0;
-e_iomap:
- pci_iounmap(pdev, ccp->io_map);
-
-e_device:
- pci_disable_device(pdev);
-
-e_regions:
- pci_release_regions(pdev);
-
e_err:
dev_notice(dev, "initialization failed\n");
return ret;
@@ -265,13 +240,7 @@ static void ccp_pci_remove(struct pci_dev *pdev)
if (!ccp)
return;
- ccp->vdata->perform->destroy(ccp);
-
- pci_iounmap(pdev, ccp->io_map);
-
- pci_disable_device(pdev);
-
- pci_release_regions(pdev);
+ ccp_dev_destroy(ccp);
dev_notice(dev, "disabled\n");
}
@@ -281,47 +250,16 @@ static int ccp_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct device *dev = &pdev->dev;
struct ccp_device *ccp = dev_get_drvdata(dev);
- unsigned long flags;
- unsigned int i;
-
- spin_lock_irqsave(&ccp->cmd_lock, flags);
-
- ccp->suspending = 1;
-
- /* Wake all the queue kthreads to prepare for suspend */
- for (i = 0; i < ccp->cmd_q_count; i++)
- wake_up_process(ccp->cmd_q[i].kthread);
- spin_unlock_irqrestore(&ccp->cmd_lock, flags);
-
- /* Wait for all queue kthreads to say they're done */
- while (!ccp_queues_suspended(ccp))
- wait_event_interruptible(ccp->suspend_queue,
- ccp_queues_suspended(ccp));
-
- return 0;
+ return ccp_dev_suspend(ccp, state);
}
static int ccp_pci_resume(struct pci_dev *pdev)
{
struct device *dev = &pdev->dev;
struct ccp_device *ccp = dev_get_drvdata(dev);
- unsigned long flags;
- unsigned int i;
-
- spin_lock_irqsave(&ccp->cmd_lock, flags);
-
- ccp->suspending = 0;
- /* Wake up all the kthreads */
- for (i = 0; i < ccp->cmd_q_count; i++) {
- ccp->cmd_q[i].suspended = 0;
- wake_up_process(ccp->cmd_q[i].kthread);
- }
-
- spin_unlock_irqrestore(&ccp->cmd_lock, flags);
-
- return 0;
+ return ccp_dev_resume(ccp);
}
#endif
diff --git a/drivers/crypto/ccp/ccp-platform.c b/drivers/crypto/ccp/ccp-platform.c
index e26969e..4a970b1 100644
--- a/drivers/crypto/ccp/ccp-platform.c
+++ b/drivers/crypto/ccp/ccp-platform.c
@@ -102,19 +102,6 @@ static void ccp_free_irqs(struct ccp_device *ccp)
free_irq(ccp->irq, dev);
}
-static struct resource *ccp_find_mmio_area(struct ccp_device *ccp)
-{
- struct device *dev = ccp->dev;
- struct platform_device *pdev = to_platform_device(dev);
- struct resource *ior;
-
- ior = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (ior && (resource_size(ior) >= 0x800))
- return ior;
-
- return NULL;
-}
-
static int ccp_platform_probe(struct platform_device *pdev)
{
struct ccp_device *ccp;
@@ -144,7 +131,7 @@ static int ccp_platform_probe(struct platform_device *pdev)
ccp->get_irq = ccp_get_irqs;
ccp->free_irq = ccp_free_irqs;
- ior = ccp_find_mmio_area(ccp);
+ ior = platform_get_resource(pdev, IORESOURCE_MEM, 0);
ccp->io_map = devm_ioremap_resource(dev, ior);
if (IS_ERR(ccp->io_map)) {
ret = PTR_ERR(ccp->io_map);
@@ -172,7 +159,7 @@ static int ccp_platform_probe(struct platform_device *pdev)
dev_set_drvdata(dev, ccp);
- ret = ccp->vdata->perform->init(ccp);
+ ret = ccp_dev_init(ccp);
if (ret)
goto e_err;
@@ -190,7 +177,7 @@ static int ccp_platform_remove(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct ccp_device *ccp = dev_get_drvdata(dev);
- ccp->vdata->perform->destroy(ccp);
+ ccp_dev_destroy(ccp);
dev_notice(dev, "disabled\n");
@@ -203,47 +190,16 @@ static int ccp_platform_suspend(struct platform_device *pdev,
{
struct device *dev = &pdev->dev;
struct ccp_device *ccp = dev_get_drvdata(dev);
- unsigned long flags;
- unsigned int i;
-
- spin_lock_irqsave(&ccp->cmd_lock, flags);
- ccp->suspending = 1;
-
- /* Wake all the queue kthreads to prepare for suspend */
- for (i = 0; i < ccp->cmd_q_count; i++)
- wake_up_process(ccp->cmd_q[i].kthread);
-
- spin_unlock_irqrestore(&ccp->cmd_lock, flags);
-
- /* Wait for all queue kthreads to say they're done */
- while (!ccp_queues_suspended(ccp))
- wait_event_interruptible(ccp->suspend_queue,
- ccp_queues_suspended(ccp));
-
- return 0;
+ return ccp_dev_suspend(ccp, state);
}
static int ccp_platform_resume(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct ccp_device *ccp = dev_get_drvdata(dev);
- unsigned long flags;
- unsigned int i;
-
- spin_lock_irqsave(&ccp->cmd_lock, flags);
- ccp->suspending = 0;
-
- /* Wake up all the kthreads */
- for (i = 0; i < ccp->cmd_q_count; i++) {
- ccp->cmd_q[i].suspended = 0;
- wake_up_process(ccp->cmd_q[i].kthread);
- }
-
- spin_unlock_irqrestore(&ccp->cmd_lock, flags);
-
- return 0;
+ return ccp_dev_resume(ccp);
}
#endif
@@ -258,7 +214,7 @@ MODULE_DEVICE_TABLE(acpi, ccp_acpi_match);
#ifdef CONFIG_OF
static const struct of_device_id ccp_of_match[] = {
{ .compatible = "amd,ccp-seattle-v1a",
- .data = (const void *)&ccpv3 },
+ .data = (const void *)&ccpv3_platform },
{ },
};
MODULE_DEVICE_TABLE(of, ccp_of_match);
--
2.9.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v3 2/5] crypto: ccp - Introduce the AMD Secure Processor device
2017-06-29 16:48 [PATCH v3 0/5] Introduce AMD Secure Processor device Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 1/5] crypto: ccp - Use devres interface to allocate PCI/iomap and cleanup Brijesh Singh
@ 2017-06-29 16:48 ` Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 3/5] crypto: cpp - Abstract interrupt registeration Brijesh Singh
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Brijesh Singh @ 2017-06-29 16:48 UTC (permalink / raw)
To: linux-crypto; +Cc: gary.hook, herbert, davem, Brijesh Singh
The CCP device is part of the AMD Secure Processor. In order to expand
the usage of the AMD Secure Processor, create a framework that allows
functional components of the AMD Secure Processor to be initialized and
handled appropriately.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
drivers/crypto/Kconfig | 6 +-
drivers/crypto/ccp/Kconfig | 21 +++--
drivers/crypto/ccp/Makefile | 4 +-
drivers/crypto/ccp/ccp-dev-v3.c | 4 +-
drivers/crypto/ccp/ccp-dev-v5.c | 5 +-
drivers/crypto/ccp/ccp-dev.c | 106 +++++++++-------------
drivers/crypto/ccp/ccp-dev.h | 21 +----
drivers/crypto/ccp/ccp-pci.c | 81 +++++++++++------
drivers/crypto/ccp/ccp-platform.c | 70 ++++++++-------
drivers/crypto/ccp/sp-dev.c | 180 ++++++++++++++++++++++++++++++++++++++
drivers/crypto/ccp/sp-dev.h | 120 +++++++++++++++++++++++++
include/linux/ccp.h | 7 +-
12 files changed, 461 insertions(+), 164 deletions(-)
create mode 100644 drivers/crypto/ccp/sp-dev.c
create mode 100644 drivers/crypto/ccp/sp-dev.h
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 0528a62..148b516 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -513,11 +513,11 @@ config CRYPTO_DEV_ATMEL_SHA
will be called atmel-sha.
config CRYPTO_DEV_CCP
- bool "Support for AMD Cryptographic Coprocessor"
+ bool "Support for AMD Secure Processor"
depends on ((X86 && PCI) || (ARM64 && (OF_ADDRESS || ACPI))) && HAS_IOMEM
help
- The AMD Cryptographic Coprocessor provides hardware offload support
- for encryption, hashing and related operations.
+ The AMD Secure Processor provides hardware offload support for memory
+ encryption in virtualization and cryptographic hashing and related operations.
if CRYPTO_DEV_CCP
source "drivers/crypto/ccp/Kconfig"
diff --git a/drivers/crypto/ccp/Kconfig b/drivers/crypto/ccp/Kconfig
index 2238f77..15b63fd 100644
--- a/drivers/crypto/ccp/Kconfig
+++ b/drivers/crypto/ccp/Kconfig
@@ -1,22 +1,29 @@
config CRYPTO_DEV_CCP_DD
- tristate "Cryptographic Coprocessor device driver"
- depends on CRYPTO_DEV_CCP
+ tristate "Secure Processor device driver"
default m
+ help
+ Provides AMD Secure Processor device driver.
+ If you choose 'M' here, this module will be called ccp.
+
+config CRYPTO_DEV_SP_CCP
+ bool "Cryptographic Coprocessor device"
+ default y
+ depends on CRYPTO_DEV_CCP_DD
select HW_RANDOM
select DMA_ENGINE
select DMADEVICES
select CRYPTO_SHA1
select CRYPTO_SHA256
help
- Provides the interface to use the AMD Cryptographic Coprocessor
- which can be used to offload encryption operations such as SHA,
- AES and more. If you choose 'M' here, this module will be called
- ccp.
+ Provides the support for AMD Cryptographic Coprocessor (CCP) device
+ which can be used to offload encryption operations such as SHA, AES
+ and more.
config CRYPTO_DEV_CCP_CRYPTO
tristate "Encryption and hashing offload support"
- depends on CRYPTO_DEV_CCP_DD
default m
+ depends on CRYPTO_DEV_CCP_DD
+ depends on CRYPTO_DEV_SP_CCP
select CRYPTO_HASH
select CRYPTO_BLKCIPHER
select CRYPTO_AUTHENC
diff --git a/drivers/crypto/ccp/Makefile b/drivers/crypto/ccp/Makefile
index 59493fd..d2f1b52 100644
--- a/drivers/crypto/ccp/Makefile
+++ b/drivers/crypto/ccp/Makefile
@@ -1,9 +1,9 @@
obj-$(CONFIG_CRYPTO_DEV_CCP_DD) += ccp.o
-ccp-objs := ccp-dev.o \
+ccp-objs := sp-dev.o ccp-platform.o
+ccp-$(CONFIG_CRYPTO_DEV_SP_CCP) += ccp-dev.o \
ccp-ops.o \
ccp-dev-v3.o \
ccp-dev-v5.o \
- ccp-platform.o \
ccp-dmaengine.o \
ccp-debugfs.o
ccp-$(CONFIG_PCI) += ccp-pci.o
diff --git a/drivers/crypto/ccp/ccp-dev-v3.c b/drivers/crypto/ccp/ccp-dev-v3.c
index 52aa88b..57179034 100644
--- a/drivers/crypto/ccp/ccp-dev-v3.c
+++ b/drivers/crypto/ccp/ccp-dev-v3.c
@@ -359,8 +359,7 @@ static void ccp_irq_bh(unsigned long data)
static irqreturn_t ccp_irq_handler(int irq, void *data)
{
- struct device *dev = data;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct ccp_device *ccp = (struct ccp_device *)data;
ccp_disable_queue_interrupts(ccp);
if (ccp->use_tasklet)
@@ -597,6 +596,5 @@ const struct ccp_vdata ccpv3 = {
.version = CCP_VERSION(3, 0),
.setup = NULL,
.perform = &ccp3_actions,
- .bar = 2,
.offset = 0x20000,
};
diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index b10d2d2..8ed2b37 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -769,8 +769,7 @@ static void ccp5_irq_bh(unsigned long data)
static irqreturn_t ccp5_irq_handler(int irq, void *data)
{
- struct device *dev = data;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct ccp_device *ccp = (struct ccp_device *)data;
ccp5_disable_queue_interrupts(ccp);
ccp->total_interrupts++;
@@ -1113,7 +1112,6 @@ const struct ccp_vdata ccpv5a = {
.version = CCP_VERSION(5, 0),
.setup = ccp5_config,
.perform = &ccp5_actions,
- .bar = 2,
.offset = 0x0,
};
@@ -1122,6 +1120,5 @@ const struct ccp_vdata ccpv5b = {
.dma_chan_attr = DMA_PRIVATE,
.setup = ccp5other_config,
.perform = &ccp5_actions,
- .bar = 2,
.offset = 0x0,
};
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
index abb3d68..8a1674a 100644
--- a/drivers/crypto/ccp/ccp-dev.c
+++ b/drivers/crypto/ccp/ccp-dev.c
@@ -111,13 +111,6 @@ static LIST_HEAD(ccp_units);
static DEFINE_SPINLOCK(ccp_rr_lock);
static struct ccp_device *ccp_rr;
-/* Ever-increasing value to produce unique unit numbers */
-static atomic_t ccp_unit_ordinal;
-static unsigned int ccp_increment_unit_ordinal(void)
-{
- return atomic_inc_return(&ccp_unit_ordinal);
-}
-
/**
* ccp_add_device - add a CCP device to the list
*
@@ -464,14 +457,17 @@ int ccp_cmd_queue_thread(void *data)
*
* @dev: device struct of the CCP
*/
-struct ccp_device *ccp_alloc_struct(struct device *dev)
+struct ccp_device *ccp_alloc_struct(struct sp_device *sp)
{
+ struct device *dev = sp->dev;
struct ccp_device *ccp;
ccp = devm_kzalloc(dev, sizeof(*ccp), GFP_KERNEL);
if (!ccp)
return NULL;
ccp->dev = dev;
+ ccp->sp = sp;
+ ccp->axcache = sp->axcache;
INIT_LIST_HEAD(&ccp->cmd);
INIT_LIST_HEAD(&ccp->backlog);
@@ -486,9 +482,8 @@ struct ccp_device *ccp_alloc_struct(struct device *dev)
init_waitqueue_head(&ccp->sb_queue);
init_waitqueue_head(&ccp->suspend_queue);
- ccp->ord = ccp_increment_unit_ordinal();
- snprintf(ccp->name, MAX_CCP_NAME_LEN, "ccp-%u", ccp->ord);
- snprintf(ccp->rngname, MAX_CCP_NAME_LEN, "ccp-%u-rng", ccp->ord);
+ snprintf(ccp->name, MAX_CCP_NAME_LEN, "ccp-%u", sp->ord);
+ snprintf(ccp->rngname, MAX_CCP_NAME_LEN, "ccp-%u-rng", sp->ord);
return ccp;
}
@@ -539,8 +534,9 @@ bool ccp_queues_suspended(struct ccp_device *ccp)
return ccp->cmd_q_count == suspended;
}
-int ccp_dev_suspend(struct ccp_device *ccp, pm_message_t state)
+int ccp_dev_suspend(struct sp_device *sp, pm_message_t state)
{
+ struct ccp_device *ccp = sp->ccp_data;
unsigned long flags;
unsigned int i;
@@ -562,8 +558,9 @@ int ccp_dev_suspend(struct ccp_device *ccp, pm_message_t state)
return 0;
}
-int ccp_dev_resume(struct ccp_device *ccp)
+int ccp_dev_resume(struct sp_device *sp)
{
+ struct ccp_device *ccp = sp->ccp_data;
unsigned long flags;
unsigned int i;
@@ -583,71 +580,54 @@ int ccp_dev_resume(struct ccp_device *ccp)
}
#endif
-int ccp_dev_init(struct ccp_device *ccp)
+int ccp_dev_init(struct sp_device *sp)
{
- ccp->io_regs = ccp->io_map + ccp->vdata->offset;
-
- if (ccp->vdata->setup)
- ccp->vdata->setup(ccp);
-
- return ccp->vdata->perform->init(ccp);
-}
+ struct device *dev = sp->dev;
+ struct ccp_device *ccp;
+ int ret;
-void ccp_dev_destroy(struct ccp_device *ccp)
-{
+ ret = -ENOMEM;
+ ccp = ccp_alloc_struct(sp);
if (!ccp)
- return;
+ goto e_err;
+ sp->ccp_data = ccp;
+
+ ccp->vdata = (struct ccp_vdata *)sp->dev_vdata->ccp_vdata;
+ if (!ccp->vdata || !ccp->vdata->version) {
+ ret = -ENODEV;
+ dev_err(dev, "missing driver data\n");
+ goto e_err;
+ }
- ccp->vdata->perform->destroy(ccp);
-}
+ ccp->get_irq = sp->get_irq;
+ ccp->free_irq = sp->free_irq;
-static int __init ccp_mod_init(void)
-{
-#ifdef CONFIG_X86
- int ret;
+ ccp->io_regs = sp->io_map + ccp->vdata->offset;
+ if (ccp->vdata->setup)
+ ccp->vdata->setup(ccp);
- ret = ccp_pci_init();
+ ret = ccp->vdata->perform->init(ccp);
if (ret)
- return ret;
+ goto e_err;
- /* Don't leave the driver loaded if init failed */
- if (ccp_present() != 0) {
- ccp_pci_exit();
- return -ENODEV;
- }
+ dev_notice(dev, "ccp enabled\n");
return 0;
-#endif
-
-#ifdef CONFIG_ARM64
- int ret;
- ret = ccp_platform_init();
- if (ret)
- return ret;
+e_err:
+ sp->ccp_data = NULL;
- /* Don't leave the driver loaded if init failed */
- if (ccp_present() != 0) {
- ccp_platform_exit();
- return -ENODEV;
- }
-
- return 0;
-#endif
+ dev_notice(dev, "ccp initialization failed\n");
- return -ENODEV;
+ return ret;
}
-static void __exit ccp_mod_exit(void)
+void ccp_dev_destroy(struct sp_device *sp)
{
-#ifdef CONFIG_X86
- ccp_pci_exit();
-#endif
+ struct ccp_device *ccp = sp->ccp_data;
-#ifdef CONFIG_ARM64
- ccp_platform_exit();
-#endif
-}
+ if (!ccp)
+ return;
-module_init(ccp_mod_init);
-module_exit(ccp_mod_exit);
+ ccp->vdata->perform->destroy(ccp);
+}
diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h
index df2e76e..ca44821 100644
--- a/drivers/crypto/ccp/ccp-dev.h
+++ b/drivers/crypto/ccp/ccp-dev.h
@@ -27,6 +27,8 @@
#include <linux/irqreturn.h>
#include <linux/dmaengine.h>
+#include "sp-dev.h"
+
#define MAX_CCP_NAME_LEN 16
#define MAX_DMAPOOL_NAME_LEN 32
@@ -344,6 +346,7 @@ struct ccp_device {
char rngname[MAX_CCP_NAME_LEN];
struct device *dev;
+ struct sp_device *sp;
/* Bus specific device information
*/
@@ -362,7 +365,6 @@ struct ccp_device {
* them.
*/
struct mutex req_mutex ____cacheline_aligned;
- void __iomem *io_map;
void __iomem *io_regs;
/* Master lists that all cmds are queued on. Because there can be
@@ -637,7 +639,7 @@ void ccp_del_device(struct ccp_device *ccp);
extern void ccp_log_error(struct ccp_device *, int);
-struct ccp_device *ccp_alloc_struct(struct device *dev);
+struct ccp_device *ccp_alloc_struct(struct sp_device *sp);
bool ccp_queues_suspended(struct ccp_device *ccp);
int ccp_cmd_queue_thread(void *data);
int ccp_trng_read(struct hwrng *rng, void *data, size_t max, bool wait);
@@ -652,11 +654,6 @@ void ccp_dmaengine_unregister(struct ccp_device *ccp);
void ccp5_debugfs_setup(struct ccp_device *ccp);
void ccp5_debugfs_destroy(void);
-int ccp_dev_init(struct ccp_device *ccp);
-void ccp_dev_destroy(struct ccp_device *ccp);
-int ccp_dev_suspend(struct ccp_device *ccp, pm_message_t state);
-int ccp_dev_resume(struct ccp_device *ccp);
-
/* Structure for computation functions that are device-specific */
struct ccp_actions {
int (*aes)(struct ccp_op *);
@@ -674,16 +671,6 @@ struct ccp_actions {
irqreturn_t (*irqhandler)(int, void *);
};
-/* Structure to hold CCP version-specific values */
-struct ccp_vdata {
- const unsigned int version;
- const unsigned int dma_chan_attr;
- void (*setup)(struct ccp_device *);
- const struct ccp_actions *perform;
- const unsigned int bar;
- const unsigned int offset;
-};
-
extern const struct ccp_vdata ccpv3_platform;
extern const struct ccp_vdata ccpv3;
extern const struct ccp_vdata ccpv5a;
diff --git a/drivers/crypto/ccp/ccp-pci.c b/drivers/crypto/ccp/ccp-pci.c
index 490ad0a..ab2df96 100644
--- a/drivers/crypto/ccp/ccp-pci.c
+++ b/drivers/crypto/ccp/ccp-pci.c
@@ -40,7 +40,8 @@ struct ccp_pci {
static int ccp_get_msix_irqs(struct ccp_device *ccp)
{
- struct ccp_pci *ccp_pci = ccp->dev_specific;
+ struct sp_device *sp = ccp->sp;
+ struct ccp_pci *ccp_pci = sp->dev_specific;
struct device *dev = ccp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
struct msix_entry msix_entry[MSIX_VECTORS];
@@ -58,11 +59,11 @@ static int ccp_get_msix_irqs(struct ccp_device *ccp)
for (v = 0; v < ccp_pci->msix_count; v++) {
/* Set the interrupt names and request the irqs */
snprintf(ccp_pci->msix[v].name, name_len, "%s-%u",
- ccp->name, v);
+ sp->name, v);
ccp_pci->msix[v].vector = msix_entry[v].vector;
ret = request_irq(ccp_pci->msix[v].vector,
ccp->vdata->perform->irqhandler,
- 0, ccp_pci->msix[v].name, dev);
+ 0, ccp_pci->msix[v].name, ccp);
if (ret) {
dev_notice(dev, "unable to allocate MSI-X IRQ (%d)\n",
ret);
@@ -86,6 +87,7 @@ static int ccp_get_msix_irqs(struct ccp_device *ccp)
static int ccp_get_msi_irq(struct ccp_device *ccp)
{
+ struct sp_device *sp = ccp->sp;
struct device *dev = ccp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
int ret;
@@ -96,7 +98,7 @@ static int ccp_get_msi_irq(struct ccp_device *ccp)
ccp->irq = pdev->irq;
ret = request_irq(ccp->irq, ccp->vdata->perform->irqhandler, 0,
- ccp->name, dev);
+ sp->name, ccp);
if (ret) {
dev_notice(dev, "unable to allocate MSI IRQ (%d)\n", ret);
goto e_msi;
@@ -134,17 +136,18 @@ static int ccp_get_irqs(struct ccp_device *ccp)
static void ccp_free_irqs(struct ccp_device *ccp)
{
- struct ccp_pci *ccp_pci = ccp->dev_specific;
+ struct sp_device *sp = ccp->sp;
+ struct ccp_pci *ccp_pci = sp->dev_specific;
struct device *dev = ccp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
if (ccp_pci->msix_count) {
while (ccp_pci->msix_count--)
free_irq(ccp_pci->msix[ccp_pci->msix_count].vector,
- dev);
+ ccp);
pci_disable_msix(pdev);
} else if (ccp->irq) {
- free_irq(ccp->irq, dev);
+ free_irq(ccp->irq, ccp);
pci_disable_msi(pdev);
}
ccp->irq = 0;
@@ -152,7 +155,7 @@ static void ccp_free_irqs(struct ccp_device *ccp)
static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
- struct ccp_device *ccp;
+ struct sp_device *sp;
struct ccp_pci *ccp_pci;
struct device *dev = &pdev->dev;
void __iomem * const *iomap_table;
@@ -160,23 +163,23 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
int ret;
ret = -ENOMEM;
- ccp = ccp_alloc_struct(dev);
- if (!ccp)
+ 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;
- ccp->dev_specific = ccp_pci;
- ccp->vdata = (struct ccp_vdata *)id->driver_data;
- if (!ccp->vdata || !ccp->vdata->version) {
+ 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;
}
- ccp->get_irq = ccp_get_irqs;
- ccp->free_irq = ccp_free_irqs;
+ sp->get_irq = ccp_get_irqs;
+ sp->free_irq = ccp_free_irqs;
ret = pcim_enable_device(pdev);
if (ret) {
@@ -198,8 +201,8 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto e_err;
}
- ccp->io_map = iomap_table[ccp->vdata->bar];
- if (!ccp->io_map) {
+ sp->io_map = iomap_table[sp->dev_vdata->bar];
+ if (!sp->io_map) {
dev_err(dev, "ioremap failed\n");
ret = -ENOMEM;
goto e_err;
@@ -217,9 +220,9 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
}
- dev_set_drvdata(dev, ccp);
+ dev_set_drvdata(dev, sp);
- ret = ccp_dev_init(ccp);
+ ret = sp_init(sp);
if (ret)
goto e_err;
@@ -235,12 +238,12 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
static void ccp_pci_remove(struct pci_dev *pdev)
{
struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct sp_device *sp = dev_get_drvdata(dev);
- if (!ccp)
+ if (!sp)
return;
- ccp_dev_destroy(ccp);
+ sp_destroy(sp);
dev_notice(dev, "disabled\n");
}
@@ -249,24 +252,44 @@ static void ccp_pci_remove(struct pci_dev *pdev)
static int ccp_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct sp_device *sp = dev_get_drvdata(dev);
- return ccp_dev_suspend(ccp, state);
+ return sp_suspend(sp, state);
}
static int ccp_pci_resume(struct pci_dev *pdev)
{
struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct sp_device *sp = dev_get_drvdata(dev);
- return ccp_dev_resume(ccp);
+ 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)&ccpv3 },
- { PCI_VDEVICE(AMD, 0x1456), (kernel_ulong_t)&ccpv5a },
- { PCI_VDEVICE(AMD, 0x1468), (kernel_ulong_t)&ccpv5b },
+ { 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, }
};
diff --git a/drivers/crypto/ccp/ccp-platform.c b/drivers/crypto/ccp/ccp-platform.c
index 4a970b1..b6bb22d 100644
--- a/drivers/crypto/ccp/ccp-platform.c
+++ b/drivers/crypto/ccp/ccp-platform.c
@@ -35,26 +35,26 @@ struct ccp_platform {
static const struct acpi_device_id ccp_acpi_match[];
static const struct of_device_id ccp_of_match[];
-static struct ccp_vdata *ccp_get_of_version(struct platform_device *pdev)
+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 ccp_vdata *)match->data;
+ return (struct sp_dev_vdata *)match->data;
#endif
return NULL;
}
-static struct ccp_vdata *ccp_get_acpi_version(struct platform_device *pdev)
+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 ccp_vdata *)match->driver_data;
+ return (struct sp_dev_vdata *)match->driver_data;
#endif
return NULL;
}
@@ -71,7 +71,7 @@ static int ccp_get_irq(struct ccp_device *ccp)
ccp->irq = ret;
ret = request_irq(ccp->irq, ccp->vdata->perform->irqhandler, 0,
- ccp->name, dev);
+ ccp->name, ccp);
if (ret) {
dev_notice(dev, "unable to allocate IRQ (%d)\n", ret);
return ret;
@@ -97,14 +97,12 @@ static int ccp_get_irqs(struct ccp_device *ccp)
static void ccp_free_irqs(struct ccp_device *ccp)
{
- struct device *dev = ccp->dev;
-
- free_irq(ccp->irq, dev);
+ free_irq(ccp->irq, ccp);
}
static int ccp_platform_probe(struct platform_device *pdev)
{
- struct ccp_device *ccp;
+ struct sp_device *sp;
struct ccp_platform *ccp_platform;
struct device *dev = &pdev->dev;
enum dev_dma_attr attr;
@@ -112,32 +110,31 @@ static int ccp_platform_probe(struct platform_device *pdev)
int ret;
ret = -ENOMEM;
- ccp = ccp_alloc_struct(dev);
- if (!ccp)
+ 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;
- ccp->dev_specific = ccp_platform;
- ccp->vdata = pdev->dev.of_node ? ccp_get_of_version(pdev)
+ sp->dev_specific = ccp_platform;
+ sp->dev_vdata = pdev->dev.of_node ? ccp_get_of_version(pdev)
: ccp_get_acpi_version(pdev);
- if (!ccp->vdata || !ccp->vdata->version) {
+ if (!sp->dev_vdata) {
ret = -ENODEV;
dev_err(dev, "missing driver data\n");
goto e_err;
}
- ccp->get_irq = ccp_get_irqs;
- ccp->free_irq = ccp_free_irqs;
+ sp->get_irq = ccp_get_irqs;
+ sp->free_irq = ccp_free_irqs;
ior = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- ccp->io_map = devm_ioremap_resource(dev, ior);
- if (IS_ERR(ccp->io_map)) {
- ret = PTR_ERR(ccp->io_map);
+ sp->io_map = devm_ioremap_resource(dev, ior);
+ if (IS_ERR(sp->io_map)) {
+ ret = PTR_ERR(sp->io_map);
goto e_err;
}
- ccp->io_regs = ccp->io_map;
attr = device_get_dma_attr(dev);
if (attr == DEV_DMA_NOT_SUPPORTED) {
@@ -147,9 +144,9 @@ static int ccp_platform_probe(struct platform_device *pdev)
ccp_platform->coherent = (attr == DEV_DMA_COHERENT);
if (ccp_platform->coherent)
- ccp->axcache = CACHE_WB_NO_ALLOC;
+ sp->axcache = CACHE_WB_NO_ALLOC;
else
- ccp->axcache = CACHE_NONE;
+ sp->axcache = CACHE_NONE;
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
if (ret) {
@@ -157,9 +154,9 @@ static int ccp_platform_probe(struct platform_device *pdev)
goto e_err;
}
- dev_set_drvdata(dev, ccp);
+ dev_set_drvdata(dev, sp);
- ret = ccp_dev_init(ccp);
+ ret = sp_init(sp);
if (ret)
goto e_err;
@@ -175,9 +172,9 @@ static int ccp_platform_probe(struct platform_device *pdev)
static int ccp_platform_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct sp_device *sp = dev_get_drvdata(dev);
- ccp_dev_destroy(ccp);
+ sp_destroy(sp);
dev_notice(dev, "disabled\n");
@@ -189,23 +186,32 @@ static int ccp_platform_suspend(struct platform_device *pdev,
pm_message_t state)
{
struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct sp_device *sp = dev_get_drvdata(dev);
- return ccp_dev_suspend(ccp, state);
+ return sp_suspend(sp, state);
}
static int ccp_platform_resume(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
+ struct sp_device *sp = dev_get_drvdata(dev);
- return ccp_dev_resume(ccp);
+ return sp_resume(sp);
}
#endif
+static const struct sp_dev_vdata dev_vdata[] = {
+ {
+ .bar = 2,
+#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)&ccpv3 },
+ { "AMDI0C00", (kernel_ulong_t)&dev_vdata[0] },
{ },
};
MODULE_DEVICE_TABLE(acpi, ccp_acpi_match);
@@ -214,7 +220,7 @@ MODULE_DEVICE_TABLE(acpi, ccp_acpi_match);
#ifdef CONFIG_OF
static const struct of_device_id ccp_of_match[] = {
{ .compatible = "amd,ccp-seattle-v1a",
- .data = (const void *)&ccpv3_platform },
+ .data = (const void *)&dev_vdata[0] },
{ },
};
MODULE_DEVICE_TABLE(of, ccp_of_match);
diff --git a/drivers/crypto/ccp/sp-dev.c b/drivers/crypto/ccp/sp-dev.c
new file mode 100644
index 0000000..d1dda38
--- /dev/null
+++ b/drivers/crypto/ccp/sp-dev.c
@@ -0,0 +1,180 @@
+/*
+ * AMD Secure Processor driver
+ *
+ * Copyright (C) 2017 Advanced Micro Devices, Inc.
+ *
+ * Author: Tom Lendacky <thomas.lendacky@amd.com>
+ * Author: Gary R Hook <gary.hook@amd.com>
+ * Author: Brijesh Singh <brijesh.singh@amd.com>
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/spinlock_types.h>
+#include <linux/types.h>
+#include <linux/ccp.h>
+
+#include "ccp-dev.h"
+#include "sp-dev.h"
+
+MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>");
+MODULE_AUTHOR("Gary R Hook <gary.hook@amd.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.1.0");
+MODULE_DESCRIPTION("AMD Secure Processor driver");
+
+/* List of SPs, SP count, read-write access lock, and access functions
+ *
+ * Lock structure: get sp_unit_lock for reading whenever we need to
+ * examine the SP list.
+ */
+static DEFINE_RWLOCK(sp_unit_lock);
+static LIST_HEAD(sp_units);
+
+/* Ever-increasing value to produce unique unit numbers */
+static atomic_t sp_ordinal;
+
+static void sp_add_device(struct sp_device *sp)
+{
+ unsigned long flags;
+
+ write_lock_irqsave(&sp_unit_lock, flags);
+
+ list_add_tail(&sp->entry, &sp_units);
+
+ write_unlock_irqrestore(&sp_unit_lock, flags);
+}
+
+static void sp_del_device(struct sp_device *sp)
+{
+ unsigned long flags;
+
+ write_lock_irqsave(&sp_unit_lock, flags);
+
+ list_del(&sp->entry);
+
+ write_unlock_irqrestore(&sp_unit_lock, flags);
+}
+
+/**
+ * sp_alloc_struct - allocate and initialize the sp_device struct
+ *
+ * @dev: device struct of the SP
+ */
+struct sp_device *sp_alloc_struct(struct device *dev)
+{
+ struct sp_device *sp;
+
+ sp = devm_kzalloc(dev, sizeof(*sp), GFP_KERNEL);
+ if (!sp)
+ return NULL;
+
+ sp->dev = dev;
+ sp->ord = atomic_inc_return(&sp_ordinal);
+ snprintf(sp->name, SP_MAX_NAME_LEN, "sp-%u", sp->ord);
+
+ return sp;
+}
+
+int sp_init(struct sp_device *sp)
+{
+ sp_add_device(sp);
+
+ if (sp->dev_vdata->ccp_vdata)
+ ccp_dev_init(sp);
+
+ return 0;
+}
+
+void sp_destroy(struct sp_device *sp)
+{
+ if (sp->dev_vdata->ccp_vdata)
+ ccp_dev_destroy(sp);
+
+ sp_del_device(sp);
+}
+
+int sp_suspend(struct sp_device *sp, pm_message_t state)
+{
+ int ret;
+
+ if (sp->dev_vdata->ccp_vdata) {
+ ret = ccp_dev_suspend(sp, state);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+int sp_resume(struct sp_device *sp)
+{
+ int ret;
+
+ if (sp->dev_vdata->ccp_vdata) {
+ ret = ccp_dev_resume(sp);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __init sp_mod_init(void)
+{
+#ifdef CONFIG_X86
+ int ret;
+
+ ret = ccp_pci_init();
+ if (ret)
+ return ret;
+
+ /* Don't leave the driver loaded if init failed */
+ if (ccp_present() != 0) {
+ ccp_pci_exit();
+ return -ENODEV;
+ }
+
+ return 0;
+#endif
+
+#ifdef CONFIG_ARM64
+ int ret;
+
+ ret = ccp_platform_init();
+ if (ret)
+ return ret;
+
+ /* Don't leave the driver loaded if init failed */
+ if (ccp_present() != 0) {
+ ccp_platform_exit();
+ return -ENODEV;
+ }
+
+ return 0;
+#endif
+
+ return -ENODEV;
+}
+
+static void __exit sp_mod_exit(void)
+{
+#ifdef CONFIG_X86
+ ccp_pci_exit();
+#endif
+
+#ifdef CONFIG_ARM64
+ ccp_platform_exit();
+#endif
+}
+
+module_init(sp_mod_init);
+module_exit(sp_mod_exit);
diff --git a/drivers/crypto/ccp/sp-dev.h b/drivers/crypto/ccp/sp-dev.h
new file mode 100644
index 0000000..189e57e
--- /dev/null
+++ b/drivers/crypto/ccp/sp-dev.h
@@ -0,0 +1,120 @@
+/*
+ * AMD Secure Processor driver
+ *
+ * Copyright (C) 2017 Advanced Micro Devices, Inc.
+ *
+ * Author: Tom Lendacky <thomas.lendacky@amd.com>
+ * Author: Gary R Hook <gary.hook@amd.com>
+ * Author: Brijesh Singh <brijesh.singh@amd.com>
+ *
+ * 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.
+ */
+
+#ifndef __SP_DEV_H__
+#define __SP_DEV_H__
+
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/list.h>
+#include <linux/wait.h>
+#include <linux/dmapool.h>
+#include <linux/hw_random.h>
+#include <linux/bitops.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
+
+#define SP_MAX_NAME_LEN 32
+
+#define CACHE_NONE 0x00
+#define CACHE_WB_NO_ALLOC 0xb7
+
+/* Structure to hold CCP device data */
+struct ccp_device;
+struct ccp_vdata {
+ const unsigned int version;
+ const unsigned int dma_chan_attr;
+ void (*setup)(struct ccp_device *);
+ const struct ccp_actions *perform;
+ const unsigned int offset;
+};
+/* Structure to hold SP device data */
+struct sp_dev_vdata {
+ const unsigned int bar;
+
+ const struct ccp_vdata *ccp_vdata;
+ void *psp_vdata;
+};
+
+struct sp_device {
+ struct list_head entry;
+
+ struct device *dev;
+
+ struct sp_dev_vdata *dev_vdata;
+ unsigned int ord;
+ char name[SP_MAX_NAME_LEN];
+
+ /* Bus specific device information */
+ void *dev_specific;
+
+ /* I/O area used for device communication. */
+ void __iomem *io_map;
+
+ /* DMA caching attribute support */
+ unsigned int axcache;
+
+ bool irq_registered;
+
+ int (*get_irq)(struct ccp_device *ccp);
+ void (*free_irq)(struct ccp_device *ccp);
+
+ void *ccp_data;
+ void *psp_data;
+};
+
+int sp_pci_init(void);
+void sp_pci_exit(void);
+
+int sp_platform_init(void);
+void sp_platform_exit(void);
+
+struct sp_device *sp_alloc_struct(struct device *dev);
+
+int sp_init(struct sp_device *sp);
+void sp_destroy(struct sp_device *sp);
+struct sp_device *sp_get_master(void);
+
+int sp_suspend(struct sp_device *sp, pm_message_t state);
+int sp_resume(struct sp_device *sp);
+
+#ifdef CONFIG_CRYPTO_DEV_SP_CCP
+
+int ccp_dev_init(struct sp_device *sp);
+void ccp_dev_destroy(struct sp_device *sp);
+
+int ccp_dev_suspend(struct sp_device *sp, pm_message_t state);
+int ccp_dev_resume(struct sp_device *sp);
+
+#else /* !CONFIG_CRYPTO_DEV_SP_CCP */
+
+static inline int ccp_dev_init(struct sp_device *sp)
+{
+ return 0;
+}
+static inline void ccp_dev_destroy(struct sp_device *sp) { }
+
+static inline int ccp_dev_suspend(struct sp_device *sp, pm_message_t state)
+{
+ return 0;
+}
+static inline int ccp_dev_resume(struct sp_device *sp)
+{
+ return 0;
+}
+#endif /* CONFIG_CRYPTO_DEV_SP_CCP */
+
+#endif
diff --git a/include/linux/ccp.h b/include/linux/ccp.h
index 3285c94..523a579 100644
--- a/include/linux/ccp.h
+++ b/include/linux/ccp.h
@@ -24,8 +24,7 @@
struct ccp_device;
struct ccp_cmd;
-#if defined(CONFIG_CRYPTO_DEV_CCP_DD) || \
- defined(CONFIG_CRYPTO_DEV_CCP_DD_MODULE)
+#if defined(CONFIG_CRYPTO_DEV_SP_CCP)
/**
* ccp_present - check if a CCP device is present
@@ -71,7 +70,7 @@ unsigned int ccp_version(void);
*/
int ccp_enqueue_cmd(struct ccp_cmd *cmd);
-#else /* CONFIG_CRYPTO_DEV_CCP_DD is not enabled */
+#else /* CONFIG_CRYPTO_DEV_CCP_SP_DEV is not enabled */
static inline int ccp_present(void)
{
@@ -88,7 +87,7 @@ static inline int ccp_enqueue_cmd(struct ccp_cmd *cmd)
return -ENODEV;
}
-#endif /* CONFIG_CRYPTO_DEV_CCP_DD */
+#endif /* CONFIG_CRYPTO_DEV_SP_CCP */
/***** AES engine *****/
--
2.9.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v3 3/5] crypto: cpp - Abstract interrupt registeration
2017-06-29 16:48 [PATCH v3 0/5] Introduce AMD Secure Processor device Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 1/5] crypto: ccp - Use devres interface to allocate PCI/iomap and cleanup Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 2/5] crypto: ccp - Introduce the AMD Secure Processor device Brijesh Singh
@ 2017-06-29 16:48 ` Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 4/5] crypto: ccp - rename ccp driver initialize files as sp device Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 5/5] crypto: ccp - remove ccp_present() check from device initialize Brijesh Singh
4 siblings, 0 replies; 6+ messages in thread
From: Brijesh Singh @ 2017-06-29 16:48 UTC (permalink / raw)
To: linux-crypto; +Cc: gary.hook, herbert, davem, Brijesh Singh
The CCP and PSP devices part of AMD Secure Procesor may share the same
interrupt. Hence we expand the SP device to register a common interrupt
handler and provide functions to CCP and PSP devices to register their
interrupt callback which will be invoked upon interrupt.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
drivers/crypto/ccp/ccp-dev-v3.c | 6 +--
drivers/crypto/ccp/ccp-dev-v5.c | 7 ++-
drivers/crypto/ccp/ccp-dev.c | 3 +-
drivers/crypto/ccp/ccp-dev.h | 2 -
drivers/crypto/ccp/ccp-pci.c | 103 +++++++++++-------------------------
drivers/crypto/ccp/ccp-platform.c | 57 ++++++++++----------
drivers/crypto/ccp/sp-dev.c | 107 ++++++++++++++++++++++++++++++++++++++
drivers/crypto/ccp/sp-dev.h | 16 +++++-
8 files changed, 186 insertions(+), 115 deletions(-)
diff --git a/drivers/crypto/ccp/ccp-dev-v3.c b/drivers/crypto/ccp/ccp-dev-v3.c
index 57179034..695fde8 100644
--- a/drivers/crypto/ccp/ccp-dev-v3.c
+++ b/drivers/crypto/ccp/ccp-dev-v3.c
@@ -453,7 +453,7 @@ static int ccp_init(struct ccp_device *ccp)
iowrite32(ccp->qim, ccp->io_regs + IRQ_STATUS_REG);
/* Request an irq */
- ret = ccp->get_irq(ccp);
+ ret = sp_request_ccp_irq(ccp->sp, ccp_irq_handler, ccp->name, ccp);
if (ret) {
dev_err(dev, "unable to allocate an IRQ\n");
goto e_pool;
@@ -510,7 +510,7 @@ static int ccp_init(struct ccp_device *ccp)
if (ccp->cmd_q[i].kthread)
kthread_stop(ccp->cmd_q[i].kthread);
- ccp->free_irq(ccp);
+ sp_free_ccp_irq(ccp->sp, ccp);
e_pool:
for (i = 0; i < ccp->cmd_q_count; i++)
@@ -549,7 +549,7 @@ static void ccp_destroy(struct ccp_device *ccp)
if (ccp->cmd_q[i].kthread)
kthread_stop(ccp->cmd_q[i].kthread);
- ccp->free_irq(ccp);
+ sp_free_ccp_irq(ccp->sp, ccp);
for (i = 0; i < ccp->cmd_q_count; i++)
dma_pool_destroy(ccp->cmd_q[i].dma_pool);
diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index 8ed2b37..b0391f0 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -880,7 +880,7 @@ static int ccp5_init(struct ccp_device *ccp)
dev_dbg(dev, "Requesting an IRQ...\n");
/* Request an irq */
- ret = ccp->get_irq(ccp);
+ ret = sp_request_ccp_irq(ccp->sp, ccp5_irq_handler, ccp->name, ccp);
if (ret) {
dev_err(dev, "unable to allocate an IRQ\n");
goto e_pool;
@@ -986,7 +986,7 @@ static int ccp5_init(struct ccp_device *ccp)
kthread_stop(ccp->cmd_q[i].kthread);
e_irq:
- ccp->free_irq(ccp);
+ sp_free_ccp_irq(ccp->sp, ccp);
e_pool:
for (i = 0; i < ccp->cmd_q_count; i++)
@@ -1036,7 +1036,7 @@ static void ccp5_destroy(struct ccp_device *ccp)
if (ccp->cmd_q[i].kthread)
kthread_stop(ccp->cmd_q[i].kthread);
- ccp->free_irq(ccp);
+ sp_free_ccp_irq(ccp->sp, ccp);
for (i = 0; i < ccp->cmd_q_count; i++) {
cmd_q = &ccp->cmd_q[i];
@@ -1105,7 +1105,6 @@ static const struct ccp_actions ccp5_actions = {
.init = ccp5_init,
.destroy = ccp5_destroy,
.get_free_slots = ccp5_get_free_slots,
- .irqhandler = ccp5_irq_handler,
};
const struct ccp_vdata ccpv5a = {
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
index 8a1674a..7c751bf 100644
--- a/drivers/crypto/ccp/ccp-dev.c
+++ b/drivers/crypto/ccp/ccp-dev.c
@@ -599,8 +599,7 @@ int ccp_dev_init(struct sp_device *sp)
goto e_err;
}
- ccp->get_irq = sp->get_irq;
- ccp->free_irq = sp->free_irq;
+ ccp->use_tasklet = sp->use_tasklet;
ccp->io_regs = sp->io_map + ccp->vdata->offset;
if (ccp->vdata->setup)
diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h
index ca44821..193f309 100644
--- a/drivers/crypto/ccp/ccp-dev.h
+++ b/drivers/crypto/ccp/ccp-dev.h
@@ -351,8 +351,6 @@ struct ccp_device {
/* Bus specific device information
*/
void *dev_specific;
- int (*get_irq)(struct ccp_device *ccp);
- void (*free_irq)(struct ccp_device *ccp);
unsigned int qim;
unsigned int irq;
bool use_tasklet;
diff --git a/drivers/crypto/ccp/ccp-pci.c b/drivers/crypto/ccp/ccp-pci.c
index ab2df96..b29a093 100644
--- a/drivers/crypto/ccp/ccp-pci.c
+++ b/drivers/crypto/ccp/ccp-pci.c
@@ -28,67 +28,37 @@
#define MSIX_VECTORS 2
-struct ccp_msix {
- u32 vector;
- char name[16];
-};
-
struct ccp_pci {
int msix_count;
- struct ccp_msix msix[MSIX_VECTORS];
+ struct msix_entry msix_entry[MSIX_VECTORS];
};
-static int ccp_get_msix_irqs(struct ccp_device *ccp)
+static int ccp_get_msix_irqs(struct sp_device *sp)
{
- struct sp_device *sp = ccp->sp;
struct ccp_pci *ccp_pci = sp->dev_specific;
- struct device *dev = ccp->dev;
+ struct device *dev = sp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
- struct msix_entry msix_entry[MSIX_VECTORS];
- unsigned int name_len = sizeof(ccp_pci->msix[0].name) - 1;
int v, ret;
- for (v = 0; v < ARRAY_SIZE(msix_entry); v++)
- msix_entry[v].entry = v;
+ for (v = 0; v < ARRAY_SIZE(ccp_pci->msix_entry); v++)
+ ccp_pci->msix_entry[v].entry = v;
- ret = pci_enable_msix_range(pdev, msix_entry, 1, v);
+ ret = pci_enable_msix_range(pdev, ccp_pci->msix_entry, 1, v);
if (ret < 0)
return ret;
ccp_pci->msix_count = ret;
- for (v = 0; v < ccp_pci->msix_count; v++) {
- /* Set the interrupt names and request the irqs */
- snprintf(ccp_pci->msix[v].name, name_len, "%s-%u",
- sp->name, v);
- ccp_pci->msix[v].vector = msix_entry[v].vector;
- ret = request_irq(ccp_pci->msix[v].vector,
- ccp->vdata->perform->irqhandler,
- 0, ccp_pci->msix[v].name, ccp);
- if (ret) {
- dev_notice(dev, "unable to allocate MSI-X IRQ (%d)\n",
- ret);
- goto e_irq;
- }
- }
- ccp->use_tasklet = true;
+ 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;
-
-e_irq:
- while (v--)
- free_irq(ccp_pci->msix[v].vector, dev);
-
- pci_disable_msix(pdev);
-
- ccp_pci->msix_count = 0;
-
- return ret;
}
-static int ccp_get_msi_irq(struct ccp_device *ccp)
+static int ccp_get_msi_irq(struct sp_device *sp)
{
- struct sp_device *sp = ccp->sp;
- struct device *dev = ccp->dev;
+ struct device *dev = sp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
int ret;
@@ -96,35 +66,24 @@ static int ccp_get_msi_irq(struct ccp_device *ccp)
if (ret)
return ret;
- ccp->irq = pdev->irq;
- ret = request_irq(ccp->irq, ccp->vdata->perform->irqhandler, 0,
- sp->name, ccp);
- if (ret) {
- dev_notice(dev, "unable to allocate MSI IRQ (%d)\n", ret);
- goto e_msi;
- }
- ccp->use_tasklet = true;
+ sp->ccp_irq = pdev->irq;
+ sp->psp_irq = pdev->irq;
return 0;
-
-e_msi:
- pci_disable_msi(pdev);
-
- return ret;
}
-static int ccp_get_irqs(struct ccp_device *ccp)
+static int ccp_get_irqs(struct sp_device *sp)
{
- struct device *dev = ccp->dev;
+ struct device *dev = sp->dev;
int ret;
- ret = ccp_get_msix_irqs(ccp);
+ 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(ccp);
+ ret = ccp_get_msi_irq(sp);
if (!ret)
return 0;
@@ -134,23 +93,19 @@ static int ccp_get_irqs(struct ccp_device *ccp)
return ret;
}
-static void ccp_free_irqs(struct ccp_device *ccp)
+static void ccp_free_irqs(struct sp_device *sp)
{
- struct sp_device *sp = ccp->sp;
struct ccp_pci *ccp_pci = sp->dev_specific;
- struct device *dev = ccp->dev;
+ struct device *dev = sp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
- if (ccp_pci->msix_count) {
- while (ccp_pci->msix_count--)
- free_irq(ccp_pci->msix[ccp_pci->msix_count].vector,
- ccp);
+ if (ccp_pci->msix_count)
pci_disable_msix(pdev);
- } else if (ccp->irq) {
- free_irq(ccp->irq, ccp);
+ else if (sp->psp_irq)
pci_disable_msi(pdev);
- }
- ccp->irq = 0;
+
+ sp->ccp_irq = 0;
+ sp->psp_irq = 0;
}
static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
@@ -178,8 +133,6 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dev_err(dev, "missing driver data\n");
goto e_err;
}
- sp->get_irq = ccp_get_irqs;
- sp->free_irq = ccp_free_irqs;
ret = pcim_enable_device(pdev);
if (ret) {
@@ -208,6 +161,10 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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));
@@ -245,6 +202,8 @@ static void ccp_pci_remove(struct pci_dev *pdev)
sp_destroy(sp);
+ ccp_free_irqs(sp);
+
dev_notice(dev, "disabled\n");
}
diff --git a/drivers/crypto/ccp/ccp-platform.c b/drivers/crypto/ccp/ccp-platform.c
index b6bb22d..5228dd7 100644
--- a/drivers/crypto/ccp/ccp-platform.c
+++ b/drivers/crypto/ccp/ccp-platform.c
@@ -30,6 +30,7 @@
struct ccp_platform {
int coherent;
+ unsigned int irq_count;
};
static const struct acpi_device_id ccp_acpi_match[];
@@ -59,45 +60,39 @@ static struct sp_dev_vdata *ccp_get_acpi_version(struct platform_device *pdev)
return NULL;
}
-static int ccp_get_irq(struct ccp_device *ccp)
+static int ccp_get_irqs(struct sp_device *sp)
{
- struct device *dev = ccp->dev;
+ 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;
- ret = platform_get_irq(pdev, 0);
- if (ret < 0)
- return ret;
+ for (i = 0, count = 0; i < pdev->num_resources; i++) {
+ struct resource *res = &pdev->resource[i];
- ccp->irq = ret;
- ret = request_irq(ccp->irq, ccp->vdata->perform->irqhandler, 0,
- ccp->name, ccp);
- if (ret) {
- dev_notice(dev, "unable to allocate IRQ (%d)\n", ret);
- return ret;
+ if (resource_type(res) == IORESOURCE_IRQ)
+ count++;
}
- return 0;
-}
+ ccp_platform->irq_count = count;
-static int ccp_get_irqs(struct ccp_device *ccp)
-{
- struct device *dev = ccp->dev;
- int ret;
-
- ret = ccp_get_irq(ccp);
- if (!ret)
- return 0;
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ return ret;
- /* Couldn't get an interrupt */
- dev_notice(dev, "could not enable interrupts (%d)\n", ret);
+ sp->psp_irq = ret;
+ if (count == 1) {
+ sp->ccp_irq = ret;
+ } else {
+ ret = platform_get_irq(pdev, 1);
+ if (ret < 0)
+ return ret;
- return ret;
-}
+ sp->ccp_irq = ret;
+ }
-static void ccp_free_irqs(struct ccp_device *ccp)
-{
- free_irq(ccp->irq, ccp);
+ return 0;
}
static int ccp_platform_probe(struct platform_device *pdev)
@@ -126,8 +121,6 @@ static int ccp_platform_probe(struct platform_device *pdev)
dev_err(dev, "missing driver data\n");
goto e_err;
}
- sp->get_irq = ccp_get_irqs;
- sp->free_irq = ccp_free_irqs;
ior = platform_get_resource(pdev, IORESOURCE_MEM, 0);
sp->io_map = devm_ioremap_resource(dev, ior);
@@ -154,6 +147,10 @@ static int ccp_platform_probe(struct platform_device *pdev)
goto e_err;
}
+ ret = ccp_get_irqs(sp);
+ if (ret)
+ goto e_err;
+
dev_set_drvdata(dev, sp);
ret = sp_init(sp);
diff --git a/drivers/crypto/ccp/sp-dev.c b/drivers/crypto/ccp/sp-dev.c
index d1dda38..44e76e5 100644
--- a/drivers/crypto/ccp/sp-dev.c
+++ b/drivers/crypto/ccp/sp-dev.c
@@ -64,6 +64,113 @@ static void sp_del_device(struct sp_device *sp)
write_unlock_irqrestore(&sp_unit_lock, flags);
}
+static irqreturn_t sp_irq_handler(int irq, void *data)
+{
+ struct sp_device *sp = data;
+
+ if (sp->ccp_irq_handler)
+ sp->ccp_irq_handler(irq, sp->ccp_irq_data);
+
+ if (sp->psp_irq_handler)
+ sp->psp_irq_handler(irq, sp->psp_irq_data);
+
+ return IRQ_HANDLED;
+}
+
+int sp_request_ccp_irq(struct sp_device *sp, irq_handler_t handler,
+ const char *name, void *data)
+{
+ int ret;
+
+ if ((sp->psp_irq == sp->ccp_irq) && sp->dev_vdata->psp_vdata) {
+ /* Need a common routine to manage all interrupts */
+ sp->ccp_irq_data = data;
+ sp->ccp_irq_handler = handler;
+
+ if (!sp->irq_registered) {
+ ret = request_irq(sp->ccp_irq, sp_irq_handler, 0,
+ sp->name, sp);
+ if (ret)
+ return ret;
+
+ sp->irq_registered = true;
+ }
+ } else {
+ /* Each sub-device can manage it's own interrupt */
+ ret = request_irq(sp->ccp_irq, handler, 0, name, data);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+int sp_request_psp_irq(struct sp_device *sp, irq_handler_t handler,
+ const char *name, void *data)
+{
+ int ret;
+
+ if ((sp->psp_irq == sp->ccp_irq) && sp->dev_vdata->ccp_vdata) {
+ /* Need a common routine to manage all interrupts */
+ sp->psp_irq_data = data;
+ sp->psp_irq_handler = handler;
+
+ if (!sp->irq_registered) {
+ ret = request_irq(sp->psp_irq, sp_irq_handler, 0,
+ sp->name, sp);
+ if (ret)
+ return ret;
+
+ sp->irq_registered = true;
+ }
+ } else {
+ /* Each sub-device can manage it's own interrupt */
+ ret = request_irq(sp->psp_irq, handler, 0, name, data);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void sp_free_ccp_irq(struct sp_device *sp, void *data)
+{
+ if ((sp->psp_irq == sp->ccp_irq) && sp->dev_vdata->psp_vdata) {
+ /* Using common routine to manage all interrupts */
+ if (!sp->psp_irq_handler) {
+ /* Nothing else using it, so free it */
+ free_irq(sp->ccp_irq, sp);
+
+ sp->irq_registered = false;
+ }
+
+ sp->ccp_irq_handler = NULL;
+ sp->ccp_irq_data = NULL;
+ } else {
+ /* Each sub-device can manage it's own interrupt */
+ free_irq(sp->ccp_irq, data);
+ }
+}
+
+void sp_free_psp_irq(struct sp_device *sp, void *data)
+{
+ if ((sp->psp_irq == sp->ccp_irq) && sp->dev_vdata->ccp_vdata) {
+ /* Using common routine to manage all interrupts */
+ if (!sp->ccp_irq_handler) {
+ /* Nothing else using it, so free it */
+ free_irq(sp->psp_irq, sp);
+
+ sp->irq_registered = false;
+ }
+
+ sp->psp_irq_handler = NULL;
+ sp->psp_irq_data = NULL;
+ } else {
+ /* Each sub-device can manage it's own interrupt */
+ free_irq(sp->psp_irq, data);
+ }
+}
+
/**
* sp_alloc_struct - allocate and initialize the sp_device struct
*
diff --git a/drivers/crypto/ccp/sp-dev.h b/drivers/crypto/ccp/sp-dev.h
index 189e57e..3520da4 100644
--- a/drivers/crypto/ccp/sp-dev.h
+++ b/drivers/crypto/ccp/sp-dev.h
@@ -68,9 +68,15 @@ struct sp_device {
unsigned int axcache;
bool irq_registered;
+ bool use_tasklet;
- int (*get_irq)(struct ccp_device *ccp);
- void (*free_irq)(struct ccp_device *ccp);
+ unsigned int ccp_irq;
+ irq_handler_t ccp_irq_handler;
+ void *ccp_irq_data;
+
+ unsigned int psp_irq;
+ irq_handler_t psp_irq_handler;
+ void *psp_irq_data;
void *ccp_data;
void *psp_data;
@@ -90,6 +96,12 @@ struct sp_device *sp_get_master(void);
int sp_suspend(struct sp_device *sp, pm_message_t state);
int sp_resume(struct sp_device *sp);
+int sp_request_ccp_irq(struct sp_device *sp, irq_handler_t handler,
+ const char *name, void *data);
+void sp_free_ccp_irq(struct sp_device *sp, void *data);
+int sp_request_psp_irq(struct sp_device *sp, irq_handler_t handler,
+ const char *name, void *data);
+void sp_free_psp_irq(struct sp_device *sp, void *data);
#ifdef CONFIG_CRYPTO_DEV_SP_CCP
--
2.9.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v3 4/5] crypto: ccp - rename ccp driver initialize files as sp device
2017-06-29 16:48 [PATCH v3 0/5] Introduce AMD Secure Processor device Brijesh Singh
` (2 preceding siblings ...)
2017-06-29 16:48 ` [PATCH v3 3/5] crypto: cpp - Abstract interrupt registeration Brijesh Singh
@ 2017-06-29 16:48 ` Brijesh Singh
2017-06-29 16:48 ` [PATCH v3 5/5] crypto: ccp - remove ccp_present() check from device initialize Brijesh Singh
4 siblings, 0 replies; 6+ messages in thread
From: Brijesh Singh @ 2017-06-29 16:48 UTC (permalink / raw)
To: linux-crypto; +Cc: gary.hook, herbert, davem, Brijesh Singh
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 <brijesh.singh@amd.com>
---
drivers/crypto/ccp/Makefile | 4 +-
drivers/crypto/ccp/ccp-dev.h | 6 --
drivers/crypto/ccp/sp-dev.c | 12 ++--
drivers/crypto/ccp/{ccp-pci.c => sp-pci.c} | 80 +++++++++++-----------
.../crypto/ccp/{ccp-platform.c => sp-platform.c} | 78 ++++++++++-----------
5 files changed, 87 insertions(+), 93 deletions(-)
rename drivers/crypto/ccp/{ccp-pci.c => sp-pci.c} (71%)
rename drivers/crypto/ccp/{ccp-platform.c => sp-platform.c} (66%)
diff --git a/drivers/crypto/ccp/Makefile b/drivers/crypto/ccp/Makefile
index d2f1b52..5f2adc5 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 193f309..b959e24 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/sp-dev.c b/drivers/crypto/ccp/sp-dev.c
index 44e76e5..edbf1bd9 100644
--- a/drivers/crypto/ccp/sp-dev.c
+++ b/drivers/crypto/ccp/sp-dev.c
@@ -240,13 +240,13 @@ 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;
}
@@ -256,13 +256,13 @@ 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;
}
@@ -275,11 +275,11 @@ 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/ccp-pci.c b/drivers/crypto/ccp/sp-pci.c
similarity index 71%
rename from drivers/crypto/ccp/ccp-pci.c
rename to drivers/crypto/ccp/sp-pci.c
index b29a093..9859aa6 100644
--- a/drivers/crypto/ccp/ccp-pci.c
+++ b/drivers/crypto/ccp/sp-pci.c
@@ -1,5 +1,5 @@
/*
- * AMD Cryptographic Coprocessor (CCP) driver
+ * AMD Secure Processor device driver
*
* Copyright (C) 2013,2016 Advanced Micro Devices, Inc.
*
@@ -28,35 +28,35 @@
#define MSIX_VECTORS 2
-struct ccp_pci {
+struct sp_pci {
int msix_count;
struct msix_entry msix_entry[MSIX_VECTORS];
};
-static int ccp_get_msix_irqs(struct sp_device *sp)
+static int sp_get_msix_irqs(struct sp_device *sp)
{
- struct ccp_pci *ccp_pci = sp->dev_specific;
+ 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(ccp_pci->msix_entry); v++)
- ccp_pci->msix_entry[v].entry = v;
+ for (v = 0; v < ARRAY_SIZE(sp_pci->msix_entry); v++)
+ sp_pci->msix_entry[v].entry = v;
- ret = pci_enable_msix_range(pdev, ccp_pci->msix_entry, 1, v);
+ ret = pci_enable_msix_range(pdev, sp_pci->msix_entry, 1, v);
if (ret < 0)
return ret;
- ccp_pci->msix_count = ret;
+ sp_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;
+ 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 ccp_get_msi_irq(struct sp_device *sp)
+static int sp_get_msi_irq(struct sp_device *sp)
{
struct device *dev = sp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
@@ -72,18 +72,18 @@ static int ccp_get_msi_irq(struct sp_device *sp)
return 0;
}
-static int ccp_get_irqs(struct sp_device *sp)
+static int sp_get_irqs(struct sp_device *sp)
{
struct device *dev = sp->dev;
int ret;
- ret = ccp_get_msix_irqs(sp);
+ 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 = ccp_get_msi_irq(sp);
+ ret = sp_get_msi_irq(sp);
if (!ret)
return 0;
@@ -93,13 +93,13 @@ static int ccp_get_irqs(struct sp_device *sp)
return ret;
}
-static void ccp_free_irqs(struct sp_device *sp)
+static void sp_free_irqs(struct sp_device *sp)
{
- struct ccp_pci *ccp_pci = sp->dev_specific;
+ struct sp_pci *sp_pci = sp->dev_specific;
struct device *dev = sp->dev;
struct pci_dev *pdev = to_pci_dev(dev);
- if (ccp_pci->msix_count)
+ if (sp_pci->msix_count)
pci_disable_msix(pdev);
else if (sp->psp_irq)
pci_disable_msi(pdev);
@@ -108,10 +108,10 @@ static void ccp_free_irqs(struct sp_device *sp)
sp->psp_irq = 0;
}
-static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct sp_device *sp;
- struct ccp_pci *ccp_pci;
+ struct sp_pci *sp_pci;
struct device *dev = &pdev->dev;
void __iomem * const *iomap_table;
int bar_mask;
@@ -122,11 +122,11 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (!sp)
goto e_err;
- ccp_pci = devm_kzalloc(dev, sizeof(*ccp_pci), GFP_KERNEL);
- if (!ccp_pci)
+ sp_pci = devm_kzalloc(dev, sizeof(*sp_pci), GFP_KERNEL);
+ if (!sp_pci)
goto e_err;
- sp->dev_specific = ccp_pci;
+ sp->dev_specific = sp_pci;
sp->dev_vdata = (struct sp_dev_vdata *)id->driver_data;
if (!sp->dev_vdata) {
ret = -ENODEV;
@@ -161,7 +161,7 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto e_err;
}
- ret = ccp_get_irqs(sp);
+ ret = sp_get_irqs(sp);
if (ret)
goto e_err;
@@ -192,7 +192,7 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return ret;
}
-static void ccp_pci_remove(struct pci_dev *pdev)
+static void sp_pci_remove(struct pci_dev *pdev)
{
struct device *dev = &pdev->dev;
struct sp_device *sp = dev_get_drvdata(dev);
@@ -202,13 +202,13 @@ static void ccp_pci_remove(struct pci_dev *pdev)
sp_destroy(sp);
- ccp_free_irqs(sp);
+ sp_free_irqs(sp);
dev_notice(dev, "disabled\n");
}
#ifdef CONFIG_PM
-static int ccp_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+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);
@@ -216,7 +216,7 @@ static int ccp_pci_suspend(struct pci_dev *pdev, pm_message_t state)
return sp_suspend(sp, state);
}
-static int ccp_pci_resume(struct pci_dev *pdev)
+static int sp_pci_resume(struct pci_dev *pdev)
{
struct device *dev = &pdev->dev;
struct sp_device *sp = dev_get_drvdata(dev);
@@ -245,32 +245,32 @@ static const struct sp_dev_vdata dev_vdata[] = {
#endif
},
};
-static const struct pci_device_id ccp_pci_table[] = {
+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, ccp_pci_table);
+MODULE_DEVICE_TABLE(pci, sp_pci_table);
-static struct pci_driver ccp_pci_driver = {
+static struct pci_driver sp_pci_driver = {
.name = "ccp",
- .id_table = ccp_pci_table,
- .probe = ccp_pci_probe,
- .remove = ccp_pci_remove,
+ .id_table = sp_pci_table,
+ .probe = sp_pci_probe,
+ .remove = sp_pci_remove,
#ifdef CONFIG_PM
- .suspend = ccp_pci_suspend,
- .resume = ccp_pci_resume,
+ .suspend = sp_pci_suspend,
+ .resume = sp_pci_resume,
#endif
};
-int ccp_pci_init(void)
+int sp_pci_init(void)
{
- return pci_register_driver(&ccp_pci_driver);
+ return pci_register_driver(&sp_pci_driver);
}
-void ccp_pci_exit(void)
+void sp_pci_exit(void)
{
- pci_unregister_driver(&ccp_pci_driver);
+ pci_unregister_driver(&sp_pci_driver);
}
diff --git a/drivers/crypto/ccp/ccp-platform.c b/drivers/crypto/ccp/sp-platform.c
similarity index 66%
rename from drivers/crypto/ccp/ccp-platform.c
rename to drivers/crypto/ccp/sp-platform.c
index 5228dd7..1785832 100644
--- a/drivers/crypto/ccp/ccp-platform.c
+++ b/drivers/crypto/ccp/sp-platform.c
@@ -1,5 +1,5 @@
/*
- * AMD Cryptographic Coprocessor (CCP) driver
+ * AMD Secure Processor device driver
*
* Copyright (C) 2014,2016 Advanced Micro Devices, Inc.
*
@@ -28,41 +28,41 @@
#include "ccp-dev.h"
-struct ccp_platform {
+struct sp_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 const struct acpi_device_id sp_acpi_match[];
+static const struct of_device_id sp_of_match[];
-static struct sp_dev_vdata *ccp_get_of_version(struct platform_device *pdev)
+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(ccp_of_match, pdev->dev.of_node);
+ 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 *ccp_get_acpi_version(struct platform_device *pdev)
+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(ccp_acpi_match, &pdev->dev);
+ 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 ccp_get_irqs(struct sp_device *sp)
+static int sp_get_irqs(struct sp_device *sp)
{
- struct ccp_platform *ccp_platform = sp->dev_specific;
+ 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;
@@ -75,7 +75,7 @@ static int ccp_get_irqs(struct sp_device *sp)
count++;
}
- ccp_platform->irq_count = count;
+ sp_platform->irq_count = count;
ret = platform_get_irq(pdev, 0);
if (ret < 0)
@@ -95,10 +95,10 @@ static int ccp_get_irqs(struct sp_device *sp)
return 0;
}
-static int ccp_platform_probe(struct platform_device *pdev)
+static int sp_platform_probe(struct platform_device *pdev)
{
struct sp_device *sp;
- struct ccp_platform *ccp_platform;
+ struct sp_platform *sp_platform;
struct device *dev = &pdev->dev;
enum dev_dma_attr attr;
struct resource *ior;
@@ -109,13 +109,13 @@ static int ccp_platform_probe(struct platform_device *pdev)
if (!sp)
goto e_err;
- ccp_platform = devm_kzalloc(dev, sizeof(*ccp_platform), GFP_KERNEL);
- if (!ccp_platform)
+ sp_platform = devm_kzalloc(dev, sizeof(*sp_platform), GFP_KERNEL);
+ if (!sp_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);
+ 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");
@@ -135,8 +135,8 @@ static int ccp_platform_probe(struct platform_device *pdev)
goto e_err;
}
- ccp_platform->coherent = (attr == DEV_DMA_COHERENT);
- if (ccp_platform->coherent)
+ sp_platform->coherent = (attr == DEV_DMA_COHERENT);
+ if (sp_platform->coherent)
sp->axcache = CACHE_WB_NO_ALLOC;
else
sp->axcache = CACHE_NONE;
@@ -147,7 +147,7 @@ static int ccp_platform_probe(struct platform_device *pdev)
goto e_err;
}
- ret = ccp_get_irqs(sp);
+ ret = sp_get_irqs(sp);
if (ret)
goto e_err;
@@ -166,7 +166,7 @@ static int ccp_platform_probe(struct platform_device *pdev)
return ret;
}
-static int ccp_platform_remove(struct platform_device *pdev)
+static int sp_platform_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct sp_device *sp = dev_get_drvdata(dev);
@@ -179,7 +179,7 @@ static int ccp_platform_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM
-static int ccp_platform_suspend(struct platform_device *pdev,
+static int sp_platform_suspend(struct platform_device *pdev,
pm_message_t state)
{
struct device *dev = &pdev->dev;
@@ -188,7 +188,7 @@ static int ccp_platform_suspend(struct platform_device *pdev,
return sp_suspend(sp, state);
}
-static int ccp_platform_resume(struct platform_device *pdev)
+static int sp_platform_resume(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct sp_device *sp = dev_get_drvdata(dev);
@@ -207,46 +207,46 @@ static const struct sp_dev_vdata dev_vdata[] = {
};
#ifdef CONFIG_ACPI
-static const struct acpi_device_id ccp_acpi_match[] = {
+static const struct acpi_device_id sp_acpi_match[] = {
{ "AMDI0C00", (kernel_ulong_t)&dev_vdata[0] },
{ },
};
-MODULE_DEVICE_TABLE(acpi, ccp_acpi_match);
+MODULE_DEVICE_TABLE(acpi, sp_acpi_match);
#endif
#ifdef CONFIG_OF
-static const struct of_device_id ccp_of_match[] = {
+static const struct of_device_id sp_of_match[] = {
{ .compatible = "amd,ccp-seattle-v1a",
.data = (const void *)&dev_vdata[0] },
{ },
};
-MODULE_DEVICE_TABLE(of, ccp_of_match);
+MODULE_DEVICE_TABLE(of, sp_of_match);
#endif
-static struct platform_driver ccp_platform_driver = {
+static struct platform_driver sp_platform_driver = {
.driver = {
.name = "ccp",
#ifdef CONFIG_ACPI
- .acpi_match_table = ccp_acpi_match,
+ .acpi_match_table = sp_acpi_match,
#endif
#ifdef CONFIG_OF
- .of_match_table = ccp_of_match,
+ .of_match_table = sp_of_match,
#endif
},
- .probe = ccp_platform_probe,
- .remove = ccp_platform_remove,
+ .probe = sp_platform_probe,
+ .remove = sp_platform_remove,
#ifdef CONFIG_PM
- .suspend = ccp_platform_suspend,
- .resume = ccp_platform_resume,
+ .suspend = sp_platform_suspend,
+ .resume = sp_platform_resume,
#endif
};
-int ccp_platform_init(void)
+int sp_platform_init(void)
{
- return platform_driver_register(&ccp_platform_driver);
+ return platform_driver_register(&sp_platform_driver);
}
-void ccp_platform_exit(void)
+void sp_platform_exit(void)
{
- platform_driver_unregister(&ccp_platform_driver);
+ platform_driver_unregister(&sp_platform_driver);
}
--
2.9.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v3 5/5] crypto: ccp - remove ccp_present() check from device initialize
2017-06-29 16:48 [PATCH v3 0/5] Introduce AMD Secure Processor device Brijesh Singh
` (3 preceding siblings ...)
2017-06-29 16:48 ` [PATCH v3 4/5] crypto: ccp - rename ccp driver initialize files as sp device Brijesh Singh
@ 2017-06-29 16:48 ` Brijesh Singh
4 siblings, 0 replies; 6+ messages in thread
From: Brijesh Singh @ 2017-06-29 16:48 UTC (permalink / raw)
To: linux-crypto; +Cc: gary.hook, herbert, davem, Brijesh Singh
Since SP device driver supports multiples devices (e.g CCP, PSP), we
should not fail the driver init just because CCP device is not found.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
drivers/crypto/ccp/sp-dev.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/crypto/ccp/sp-dev.c b/drivers/crypto/ccp/sp-dev.c
index edbf1bd9..a017233 100644
--- a/drivers/crypto/ccp/sp-dev.c
+++ b/drivers/crypto/ccp/sp-dev.c
@@ -244,12 +244,6 @@ static int __init sp_mod_init(void)
if (ret)
return ret;
- /* Don't leave the driver loaded if init failed */
- if (ccp_present() != 0) {
- sp_pci_exit();
- return -ENODEV;
- }
-
return 0;
#endif
@@ -260,12 +254,6 @@ static int __init sp_mod_init(void)
if (ret)
return ret;
- /* Don't leave the driver loaded if init failed */
- if (ccp_present() != 0) {
- sp_platform_exit();
- return -ENODEV;
- }
-
return 0;
#endif
--
2.9.4
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