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crypto: ccp - Enable use of the additional CCP 

A second CCP is available, identical to the first, with
its ownn PCI ID. Make it available for use by the crypto
subsystem, as well as for DMA activity and random
number generation.

This device is not pre-configured at at boot time. The
driver must configure it (during the probe) for use.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gary R Hook 2016-07-26 19:10:49 -05:00 committed by Herbert Xu
parent 99d90b2ebd
commit e14e7d1267
3 changed files with 46 additions and 1 deletions
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37
drivers/crypto/ccp/ccp-dev-v5.c
View File

@ -835,7 +835,7 @@ static int ccp5_init(struct ccp_device *ccp)
/* Register the DMA engine support */
ret = ccp_dmaengine_register(ccp);
if (ret)
goto e_hwrng;
goto e_kthread;
return 0;
@ -952,6 +952,33 @@ static void ccp5_config(struct ccp_device *ccp)
iowrite32(0x00001249, ccp->io_regs + CMD5_REQID_CONFIG_OFFSET);
}
static void ccp5other_config(struct ccp_device *ccp)
{
int i;
u32 rnd;
/* We own all of the queues on the NTB CCP */
iowrite32(0x00012D57, ccp->io_regs + CMD5_TRNG_CTL_OFFSET);
iowrite32(0x00000003, ccp->io_regs + CMD5_CONFIG_0_OFFSET);
for (i = 0; i < 12; i++) {
rnd = ioread32(ccp->io_regs + TRNG_OUT_REG);
iowrite32(rnd, ccp->io_regs + CMD5_AES_MASK_OFFSET);
}
iowrite32(0x0000001F, ccp->io_regs + CMD5_QUEUE_MASK_OFFSET);
iowrite32(0x00005B6D, ccp->io_regs + CMD5_QUEUE_PRIO_OFFSET);
iowrite32(0x00000000, ccp->io_regs + CMD5_CMD_TIMEOUT_OFFSET);
iowrite32(0x3FFFFFFF, ccp->io_regs + LSB_PRIVATE_MASK_LO_OFFSET);
iowrite32(0x000003FF, ccp->io_regs + LSB_PRIVATE_MASK_HI_OFFSET);
iowrite32(0x00108823, ccp->io_regs + CMD5_CLK_GATE_CTL_OFFSET);
ccp5_config(ccp);
}
/* Version 5 adds some function, but is essentially the same as v5 */
static const struct ccp_actions ccp5_actions = {
.aes = ccp5_perform_aes,
.xts_aes = ccp5_perform_xts_aes,
@ -974,3 +1001,11 @@ struct ccp_vdata ccpv5 = {
.bar = 2,
.offset = 0x0,
};
struct ccp_vdata ccpv5other = {
.version = CCP_VERSION(5, 0),
.setup = ccp5other_config,
.perform = &ccp5_actions,
.bar = 2,
.offset = 0x0,
};

8
drivers/crypto/ccp/ccp-dev.h
View File

@ -63,7 +63,9 @@
/* ------------------------ CCP Version 5 Specifics ------------------------ */
#define CMD5_QUEUE_MASK_OFFSET 0x00
#define CMD5_QUEUE_PRIO_OFFSET 0x04
#define CMD5_REQID_CONFIG_OFFSET 0x08
#define CMD5_CMD_TIMEOUT_OFFSET 0x10
#define LSB_PUBLIC_MASK_LO_OFFSET 0x18
#define LSB_PUBLIC_MASK_HI_OFFSET 0x1C
#define LSB_PRIVATE_MASK_LO_OFFSET 0x20
@ -83,6 +85,11 @@
#define CMD5_Q_ABORT_BASE 0x0114
#define CMD5_Q_AX_CACHE_BASE 0x0118
#define CMD5_CONFIG_0_OFFSET 0x6000
#define CMD5_TRNG_CTL_OFFSET 0x6008
#define CMD5_AES_MASK_OFFSET 0x6010
#define CMD5_CLK_GATE_CTL_OFFSET 0x603C
/* Address offset between two virtual queue registers */
#define CMD5_Q_STATUS_INCR 0x1000
@ -634,5 +641,6 @@ struct ccp_vdata {
extern struct ccp_vdata ccpv3;
extern struct ccp_vdata ccpv5;
extern struct ccp_vdata ccpv5other;
#endif

2
drivers/crypto/ccp/ccp-pci.c
View File

@ -232,6 +232,7 @@ static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (ccp->vdata->setup)
ccp->vdata->setup(ccp);
ret = ccp->vdata->perform->init(ccp);
if (ret)
goto e_iomap;
@ -325,6 +326,7 @@ static int ccp_pci_resume(struct pci_dev *pdev)
static const struct pci_device_id ccp_pci_table[] = {
{ PCI_VDEVICE(AMD, 0x1537), (kernel_ulong_t)&ccpv3 },
{ PCI_VDEVICE(AMD, 0x1456), (kernel_ulong_t)&ccpv5 },
{ PCI_VDEVICE(AMD, 0x1468), (kernel_ulong_t)&ccpv5other },
/* Last entry must be zero */
{ 0, }
};