From 6c5f898f12a3d65f04a928ffd7e38ae397c9a0d4 Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Tue, 20 Aug 2019 13:23:57 -0700 Subject: [PATCH] crypto: caam - drop explicit usage of struct jr_outentry MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Using struct jr_outentry to specify the layout of JobR output ring is not appropriate for all 64-bit SoC, since some of them, like i.MX8MQ, use 32-bit pointers there which doesn't match 64-bit dma_addr_t. Convert existing code to use explicit helper functions to access any of the JobR output ring elements, so that the support for i.MX8MQ can be added later. No functional change intended. Signed-off-by: Andrey Smirnov Cc: Chris Spencer Cc: Cory Tusar Cc: Chris Healy Cc: Lucas Stach Cc: Horia Geantă Cc: Aymen Sghaier Cc: Leonard Crestez Cc: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Herbert Xu --- drivers/crypto/caam/intern.h | 2 +- drivers/crypto/caam/jr.c | 10 +++++---- drivers/crypto/caam/regs.h | 40 ++++++++++++++++++++++++++++++++---- 3 files changed, 43 insertions(+), 9 deletions(-) diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h index 1f01703f510a..081805c0f88b 100644 --- a/drivers/crypto/caam/intern.h +++ b/drivers/crypto/caam/intern.h @@ -58,7 +58,7 @@ struct caam_drv_private_jr { dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */ int out_ring_read_index; /* Output index "tail" */ int tail; /* entinfo (s/w ring) tail index */ - struct jr_outentry *outring; /* Base of output ring, DMA-safe */ + void *outring; /* Base of output ring, DMA-safe */ }; /* diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c index 98b308de42c0..6c91f38862e4 100644 --- a/drivers/crypto/caam/jr.c +++ b/drivers/crypto/caam/jr.c @@ -211,7 +211,7 @@ static void caam_jr_dequeue(unsigned long devarg) for (i = 0; CIRC_CNT(head, tail + i, JOBR_DEPTH) >= 1; i++) { sw_idx = (tail + i) & (JOBR_DEPTH - 1); - if (jrp->outring[hw_idx].desc == + if (jr_outentry_desc(jrp->outring, hw_idx) == caam_dma_to_cpu(jrp->entinfo[sw_idx].desc_addr_dma)) break; /* found */ } @@ -220,7 +220,8 @@ static void caam_jr_dequeue(unsigned long devarg) /* Unmap just-run descriptor so we can post-process */ dma_unmap_single(dev, - caam_dma_to_cpu(jrp->outring[hw_idx].desc), + caam_dma_to_cpu(jr_outentry_desc(jrp->outring, + hw_idx)), jrp->entinfo[sw_idx].desc_size, DMA_TO_DEVICE); @@ -231,7 +232,8 @@ static void caam_jr_dequeue(unsigned long devarg) usercall = jrp->entinfo[sw_idx].callbk; userarg = jrp->entinfo[sw_idx].cbkarg; userdesc = jrp->entinfo[sw_idx].desc_addr_virt; - userstatus = caam32_to_cpu(jrp->outring[hw_idx].jrstatus); + userstatus = caam32_to_cpu(jr_outentry_jrstatus(jrp->outring, + hw_idx)); /* * Make sure all information from the job has been obtained @@ -438,7 +440,7 @@ static int caam_jr_init(struct device *dev) if (!jrp->inpring) return -ENOMEM; - jrp->outring = dmam_alloc_coherent(dev, sizeof(*jrp->outring) * + jrp->outring = dmam_alloc_coherent(dev, SIZEOF_JR_OUTENTRY * JOBR_DEPTH, &outbusaddr, GFP_KERNEL); if (!jrp->outring) diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h index 0df4cf32fe78..cf73015b3be0 100644 --- a/drivers/crypto/caam/regs.h +++ b/drivers/crypto/caam/regs.h @@ -71,6 +71,7 @@ extern bool caam_little_end; extern bool caam_imx; +extern size_t caam_ptr_sz; #define caam_to_cpu(len) \ static inline u##len caam##len ## _to_cpu(u##len val) \ @@ -208,10 +209,41 @@ static inline u64 caam_dma_to_cpu(u64 value) * jr_outentry * Represents each entry in a JobR output ring */ -struct jr_outentry { - dma_addr_t desc;/* Pointer to completed descriptor */ - u32 jrstatus; /* Status for completed descriptor */ -} __packed; + +static inline void jr_outentry_get(void *outring, int hw_idx, dma_addr_t *desc, + u32 *jrstatus) +{ + struct { + dma_addr_t desc;/* Pointer to completed descriptor */ + u32 jrstatus; /* Status for completed descriptor */ + } __packed *outentry = outring; + + *desc = outentry[hw_idx].desc; + *jrstatus = outentry[hw_idx].jrstatus; +} + +#define SIZEOF_JR_OUTENTRY (caam_ptr_sz + sizeof(u32)) + +static inline dma_addr_t jr_outentry_desc(void *outring, int hw_idx) +{ + dma_addr_t desc; + u32 unused; + + jr_outentry_get(outring, hw_idx, &desc, &unused); + + return desc; +} + +static inline u32 jr_outentry_jrstatus(void *outring, int hw_idx) +{ + dma_addr_t unused; + u32 jrstatus; + + jr_outentry_get(outring, hw_idx, &unused, &jrstatus); + + return jrstatus; +} + /* Version registers (Era 10+) e80-eff */ struct version_regs { -- 2.39.5