[PATCH] crypto:caam - Configuration for platforms with virtualization enabled in CAAM
From: Ruchika Gupta
Date: Mon Jun 23 2014 - 02:55:39 EST
For platforms with virtualization enabled
1. The job ring registers can be written to only is the job ring has been
started i.e STARTR bit in JRSTART register is 1
2. For DECO's under direct software control, with virtualization enabled
PL, BMT, ICID and SDID values need to be provided. These are provided by
selecting a Job ring in start mode whose parameters would be used for the
DECO access programming.
Signed-off-by: Ruchika Gupta <ruchika.gupta@xxxxxxxxxxxxx>
---
The current patch used the 32 bit register comp_params_ms defined in another patch.
The link of patch thsi patch is depnedent on is given below:
crypto: caam - Correct definition of registers in memory map
(https://lkml.org/lkml/2014/6/23/3)
drivers/crypto/caam/ctrl.c | 39 +++++++++++++++++++++++++++++++++++++++
drivers/crypto/caam/intern.h | 1 +
drivers/crypto/caam/regs.h | 18 ++++++++++++++++--
3 files changed, 56 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 066a4d4..7acaaa4 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -88,6 +88,14 @@ static inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc,
/* Set the bit to request direct access to DECO0 */
topregs = (struct caam_full __iomem *)ctrlpriv->ctrl;
+
+ if (ctrlpriv->virt_en == 1)
+ setbits32(&topregs->ctrl.deco_rsr, DECORSR_JR0);
+
+ while (!(rd_reg32(&topregs->ctrl.deco_rsr) & DECORSR_VALID) &&
+ --timeout)
+ cpu_relax();
+
setbits32(&topregs->ctrl.deco_rq, DECORR_RQD0ENABLE);
while (!(rd_reg32(&topregs->ctrl.deco_rq) & DECORR_DEN0) &&
@@ -130,6 +138,9 @@ static inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc,
*status = rd_reg32(&topregs->deco.op_status_hi) &
DECO_OP_STATUS_HI_ERR_MASK;
+ if (ctrlpriv->virt_en == 1)
+ clrbits32(&topregs->ctrl.deco_rsr, DECORSR_JR0);
+
/* Mark the DECO as free */
clrbits32(&topregs->ctrl.deco_rq, DECORR_RQD0ENABLE);
@@ -378,6 +389,7 @@ static int caam_probe(struct platform_device *pdev)
#ifdef CONFIG_DEBUG_FS
struct caam_perfmon *perfmon;
#endif
+ u32 scfgr, comp_params;
u32 cha_vid_ls;
ctrlpriv = devm_kzalloc(&pdev->dev, sizeof(struct caam_drv_private),
@@ -412,6 +424,33 @@ static int caam_probe(struct platform_device *pdev)
setbits32(&topregs->ctrl.mcr, MCFGR_WDENABLE |
(sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0));
+ /*
+ * Read the Compile Time paramters and SCFGR to determine
+ * if Virtualization is enabled for this platform
+ */
+ comp_params = rd_reg32(&topregs->ctrl.perfmon.comp_parms_ms);
+ scfgr = rd_reg32(&topregs->ctrl.scfgr);
+
+ ctrlpriv->virt_en = 0;
+ if (comp_params & CTPR_MS_VIRT_EN_INCL) {
+ /* VIRT_EN_INCL = 1 & VIRT_EN_POR = 1 or
+ * VIRT_EN_INCL = 1 & VIRT_EN_POR = 0 & SCFGR_VIRT_EN = 1
+ */
+ if ((comp_params & CTPR_MS_VIRT_EN_POR) ||
+ (!(comp_params & CTPR_MS_VIRT_EN_POR) &&
+ (scfgr & SCFGR_VIRT_EN)))
+ ctrlpriv->virt_en = 1;
+ } else {
+ /* VIRT_EN_INCL = 0 && VIRT_EN_POR_VALUE = 1 */
+ if (comp_params & CTPR_MS_VIRT_EN_POR)
+ ctrlpriv->virt_en = 1;
+ }
+
+ if (ctrlpriv->virt_en == 1)
+ setbits32(&topregs->ctrl.jrstart, JRSTART_JR0_START |
+ JRSTART_JR1_START | JRSTART_JR2_START |
+ JRSTART_JR3_START);
+
if (sizeof(dma_addr_t) == sizeof(u64))
if (of_device_is_compatible(nprop, "fsl,sec-v5.0"))
dma_set_mask(dev, DMA_BIT_MASK(40));
diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h
index 6d85fcc..97363db 100644
--- a/drivers/crypto/caam/intern.h
+++ b/drivers/crypto/caam/intern.h
@@ -82,6 +82,7 @@ struct caam_drv_private {
u8 total_jobrs; /* Total Job Rings in device */
u8 qi_present; /* Nonzero if QI present in device */
int secvio_irq; /* Security violation interrupt number */
+ int virt_en; /* Virtualization enabled in CAAM */
#define RNG4_MAX_HANDLES 2
/* RNG4 block */
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index 7bb898d..69e3562 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -176,6 +176,8 @@ struct caam_perfmon {
u32 cha_rev_ls; /* CRNR - CHA Rev No. Least significant half*/
#define CTPR_MS_QI_SHIFT 25
#define CTPR_MS_QI_MASK (0x1ull << CTPR_MS_QI_SHIFT)
+#define CTPR_MS_VIRT_EN_INCL 0x00000001
+#define CTPR_MS_VIRT_EN_POR 0x00000002
u32 comp_parms_ms; /* CTPR - Compile Parameters Register */
u32 comp_parms_ls; /* CTPR - Compile Parameters Register */
u64 rsvd1[2];
@@ -309,9 +311,12 @@ struct caam_ctrl {
/* Bus Access Configuration Section 010-11f */
/* Read/Writable */
struct masterid jr_mid[4]; /* JRxLIODNR - JobR LIODN setup */
- u32 rsvd3[12];
+ u32 rsvd3[11];
+ u32 jrstart; /* JRSTART - Job Ring Start Register */
struct masterid rtic_mid[4]; /* RTICxLIODNR - RTIC LIODN setup */
- u32 rsvd4[7];
+ u32 rsvd4[5];
+ u32 deco_rsr; /* DECORSR - Deco Request Source */
+ u32 rsvd11;
u32 deco_rq; /* DECORR - DECO Request */
struct partid deco_mid[5]; /* DECOxLIODNR - 1 per DECO */
u32 rsvd5[22];
@@ -352,7 +357,10 @@ struct caam_ctrl {
#define MCFGR_DMA_RESET 0x10000000
#define MCFGR_LONG_PTR 0x00010000 /* Use >32-bit desc addressing */
#define SCFGR_RDBENABLE 0x00000400
+#define SCFGR_VIRT_EN 0x00008000
#define DECORR_RQD0ENABLE 0x00000001 /* Enable DECO0 for direct access */
+#define DECORSR_JR0 0x00000001 /* JR to supply TZ, SDID, ICID */
+#define DECORSR_VALID 0x80000000
#define DECORR_DEN0 0x00010000 /* DECO0 available for access*/
/* AXI read cache control */
@@ -370,6 +378,12 @@ struct caam_ctrl {
#define MCFGR_AXIPRI 0x00000008 /* Assert AXI priority sideband */
#define MCFGR_BURST_64 0x00000001 /* Max burst size */
+/* JRSTART register offsets */
+#define JRSTART_JR0_START 0x00000001 /* Start Job ring 0 */
+#define JRSTART_JR1_START 0x00000002 /* Start Job ring 1 */
+#define JRSTART_JR2_START 0x00000004 /* Start Job ring 2 */
+#define JRSTART_JR3_START 0x00000008 /* Start Job ring 3 */
+
/*
* caam_job_ring - direct job ring setup
* 1-4 possible per instantiation, base + 1000/2000/3000/4000
--
1.8.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/