crypto: caam - Configuration for platforms with virtualization enabled in CAAM
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@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 066a4d4..1d8e003 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -88,6 +88,14 @@
/* 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 @@
*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 @@
#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 @@
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 @@
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 @@
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 @@
/* 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 @@
#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 @@
#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