From 297b9cebd2fc020f0bd3e0aac68b0758ab84e8d8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Horia=20Geant=C4=83?= Date: Tue, 18 Jul 2017 18:30:47 +0300 Subject: [PATCH] crypto: caam/jr - add support for DPAA2 parts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add support for using the caam/jr backend on DPAA2-based SoCs. These have some particularities we have to account for: -HW S/G format is different -Management Complex (MC) firmware initializes / manages (partially) the CAAM block: MCFGR, QI enablement in QICTL, RNG Signed-off-by: Horia Geantă Signed-off-by: Herbert Xu --- drivers/crypto/caam/caamhash.c | 7 ++- drivers/crypto/caam/ctrl.c | 45 +++++++++++------- drivers/crypto/caam/ctrl.h | 2 + drivers/crypto/caam/jr.c | 7 ++- drivers/crypto/caam/regs.h | 1 + drivers/crypto/caam/sg_sw_qm2.h | 81 ++++++++++++++++++++++++++++++++ drivers/crypto/caam/sg_sw_sec4.h | 30 ++++++++++-- 7 files changed, 148 insertions(+), 25 deletions(-) create mode 100644 drivers/crypto/caam/sg_sw_qm2.h diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 910ec61cae09..698580b60b2f 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -791,8 +791,8 @@ static int ahash_update_ctx(struct ahash_request *req) to_hash - *buflen, *next_buflen, 0); } else { - (edesc->sec4_sg + sec4_sg_src_index - 1)->len |= - cpu_to_caam32(SEC4_SG_LEN_FIN); + sg_to_sec4_set_last(edesc->sec4_sg + sec4_sg_src_index - + 1); } desc = edesc->hw_desc; @@ -882,8 +882,7 @@ static int ahash_final_ctx(struct ahash_request *req) if (ret) goto unmap_ctx; - (edesc->sec4_sg + sec4_sg_src_index - 1)->len |= - cpu_to_caam32(SEC4_SG_LEN_FIN); + sg_to_sec4_set_last(edesc->sec4_sg + sec4_sg_src_index - 1); edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, sec4_sg_bytes, DMA_TO_DEVICE); diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 7338f15b8674..fdbcba13824c 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -17,6 +17,8 @@ bool caam_little_end; EXPORT_SYMBOL(caam_little_end); +bool caam_dpaa2; +EXPORT_SYMBOL(caam_dpaa2); #ifdef CONFIG_CAAM_QI #include "qi.h" @@ -319,8 +321,11 @@ static int caam_remove(struct platform_device *pdev) caam_qi_shutdown(ctrlpriv->qidev); #endif - /* De-initialize RNG state handles initialized by this driver. */ - if (ctrlpriv->rng4_sh_init) + /* + * De-initialize RNG state handles initialized by this driver. + * In case of DPAA 2.x, RNG is managed by MC firmware. + */ + if (!caam_dpaa2 && ctrlpriv->rng4_sh_init) deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init); /* Shut down debug views */ @@ -552,12 +557,17 @@ static int caam_probe(struct platform_device *pdev) /* * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel, - * long pointers in master configuration register + * long pointers in master configuration register. + * In case of DPAA 2.x, Management Complex firmware performs + * the configuration. */ - clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK | MCFGR_LONG_PTR, - MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF | - MCFGR_WDENABLE | MCFGR_LARGE_BURST | - (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); + caam_dpaa2 = !!(comp_params & CTPR_MS_DPAA2); + if (!caam_dpaa2) + clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK | MCFGR_LONG_PTR, + MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF | + MCFGR_WDENABLE | MCFGR_LARGE_BURST | + (sizeof(dma_addr_t) == sizeof(u64) ? + MCFGR_LONG_PTR : 0)); /* * Read the Compile Time paramters and SCFGR to determine @@ -586,7 +596,9 @@ static int caam_probe(struct platform_device *pdev) JRSTART_JR3_START); if (sizeof(dma_addr_t) == sizeof(u64)) { - if (of_device_is_compatible(nprop, "fsl,sec-v5.0")) + if (caam_dpaa2) + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(49)); + else if (of_device_is_compatible(nprop, "fsl,sec-v5.0")) ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); else ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(36)); @@ -629,11 +641,9 @@ static int caam_probe(struct platform_device *pdev) ring++; } - /* Check to see if QI present. If so, enable */ - ctrlpriv->qi_present = - !!(rd_reg32(&ctrl->perfmon.comp_parms_ms) & - CTPR_MS_QI_MASK); - if (ctrlpriv->qi_present) { + /* Check to see if (DPAA 1.x) QI present. If so, enable */ + ctrlpriv->qi_present = !!(comp_params & CTPR_MS_QI_MASK); + if (ctrlpriv->qi_present && !caam_dpaa2) { ctrlpriv->qi = (struct caam_queue_if __iomem __force *) ((__force uint8_t *)ctrl + BLOCK_OFFSET * QI_BLOCK_NUMBER @@ -661,8 +671,10 @@ static int caam_probe(struct platform_device *pdev) /* * If SEC has RNG version >= 4 and RNG state handle has not been * already instantiated, do RNG instantiation + * In case of DPAA 2.x, RNG is managed by MC firmware. */ - if ((cha_vid_ls & CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT >= 4) { + if (!caam_dpaa2 && + (cha_vid_ls & CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT >= 4) { ctrlpriv->rng4_sh_init = rd_reg32(&ctrl->r4tst[0].rdsta); /* @@ -730,8 +742,9 @@ static int caam_probe(struct platform_device *pdev) /* Report "alive" for developer to see */ dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id, caam_get_era()); - dev_info(dev, "job rings = %d, qi = %d\n", - ctrlpriv->total_jobrs, ctrlpriv->qi_present); + dev_info(dev, "job rings = %d, qi = %d, dpaa2 = %s\n", + ctrlpriv->total_jobrs, ctrlpriv->qi_present, + caam_dpaa2 ? "yes" : "no"); #ifdef CONFIG_DEBUG_FS diff --git a/drivers/crypto/caam/ctrl.h b/drivers/crypto/caam/ctrl.h index cac5402a46eb..7e7bf68c9ef5 100644 --- a/drivers/crypto/caam/ctrl.h +++ b/drivers/crypto/caam/ctrl.h @@ -10,4 +10,6 @@ /* Prototypes for backend-level services exposed to APIs */ int caam_get_era(void); +extern bool caam_dpaa2; + #endif /* CTRL_H */ diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c index 1ccfb317d468..d258953ff488 100644 --- a/drivers/crypto/caam/jr.c +++ b/drivers/crypto/caam/jr.c @@ -9,6 +9,7 @@ #include #include "compat.h" +#include "ctrl.h" #include "regs.h" #include "jr.h" #include "desc.h" @@ -499,7 +500,11 @@ static int caam_jr_probe(struct platform_device *pdev) jrpriv->rregs = (struct caam_job_ring __iomem __force *)ctrl; if (sizeof(dma_addr_t) == sizeof(u64)) { - if (of_device_is_compatible(nprop, "fsl,sec-v5.0-job-ring")) + if (caam_dpaa2) + error = dma_set_mask_and_coherent(jrdev, + DMA_BIT_MASK(49)); + else if (of_device_is_compatible(nprop, + "fsl,sec-v5.0-job-ring")) error = dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(40)); else diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h index 84d2f838a063..2b5efff9ec3c 100644 --- a/drivers/crypto/caam/regs.h +++ b/drivers/crypto/caam/regs.h @@ -293,6 +293,7 @@ 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_DPAA2 BIT(13) #define CTPR_MS_VIRT_EN_INCL 0x00000001 #define CTPR_MS_VIRT_EN_POR 0x00000002 #define CTPR_MS_PG_SZ_MASK 0x10 diff --git a/drivers/crypto/caam/sg_sw_qm2.h b/drivers/crypto/caam/sg_sw_qm2.h new file mode 100644 index 000000000000..31b440757146 --- /dev/null +++ b/drivers/crypto/caam/sg_sw_qm2.h @@ -0,0 +1,81 @@ +/* + * Copyright 2015-2016 Freescale Semiconductor, Inc. + * Copyright 2017 NXP + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the names of the above-listed copyright holders nor the + * names of any contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _SG_SW_QM2_H_ +#define _SG_SW_QM2_H_ + +#include "../../../drivers/staging/fsl-mc/include/dpaa2-fd.h" + +static inline void dma_to_qm_sg_one(struct dpaa2_sg_entry *qm_sg_ptr, + dma_addr_t dma, u32 len, u16 offset) +{ + dpaa2_sg_set_addr(qm_sg_ptr, dma); + dpaa2_sg_set_format(qm_sg_ptr, dpaa2_sg_single); + dpaa2_sg_set_final(qm_sg_ptr, false); + dpaa2_sg_set_len(qm_sg_ptr, len); + dpaa2_sg_set_bpid(qm_sg_ptr, 0); + dpaa2_sg_set_offset(qm_sg_ptr, offset); +} + +/* + * convert scatterlist to h/w link table format + * but does not have final bit; instead, returns last entry + */ +static inline struct dpaa2_sg_entry * +sg_to_qm_sg(struct scatterlist *sg, int sg_count, + struct dpaa2_sg_entry *qm_sg_ptr, u16 offset) +{ + while (sg_count && sg) { + dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg), + sg_dma_len(sg), offset); + qm_sg_ptr++; + sg = sg_next(sg); + sg_count--; + } + return qm_sg_ptr - 1; +} + +/* + * convert scatterlist to h/w link table format + * scatterlist must have been previously dma mapped + */ +static inline void sg_to_qm_sg_last(struct scatterlist *sg, int sg_count, + struct dpaa2_sg_entry *qm_sg_ptr, + u16 offset) +{ + qm_sg_ptr = sg_to_qm_sg(sg, sg_count, qm_sg_ptr, offset); + dpaa2_sg_set_final(qm_sg_ptr, true); +} + +#endif /* _SG_SW_QM2_H_ */ diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h index 2f6bf162bb6c..936b1b630058 100644 --- a/drivers/crypto/caam/sg_sw_sec4.h +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -5,7 +5,13 @@ * */ +#ifndef _SG_SW_SEC4_H_ +#define _SG_SW_SEC4_H_ + +#include "ctrl.h" #include "regs.h" +#include "sg_sw_qm2.h" +#include "../../../drivers/staging/fsl-mc/include/dpaa2-fd.h" struct sec4_sg_entry { u64 ptr; @@ -19,9 +25,15 @@ struct sec4_sg_entry { static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, dma_addr_t dma, u32 len, u16 offset) { - sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma); - sec4_sg_ptr->len = cpu_to_caam32(len); - sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset & SEC4_SG_OFFSET_MASK); + if (caam_dpaa2) { + dma_to_qm_sg_one((struct dpaa2_sg_entry *)sec4_sg_ptr, dma, len, + offset); + } else { + sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma); + sec4_sg_ptr->len = cpu_to_caam32(len); + sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset & + SEC4_SG_OFFSET_MASK); + } #ifdef DEBUG print_hex_dump(KERN_ERR, "sec4_sg_ptr@: ", DUMP_PREFIX_ADDRESS, 16, 4, sec4_sg_ptr, @@ -47,6 +59,14 @@ sg_to_sec4_sg(struct scatterlist *sg, int sg_count, return sec4_sg_ptr - 1; } +static inline void sg_to_sec4_set_last(struct sec4_sg_entry *sec4_sg_ptr) +{ + if (caam_dpaa2) + dpaa2_sg_set_final((struct dpaa2_sg_entry *)sec4_sg_ptr, true); + else + sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN); +} + /* * convert scatterlist to h/w link table format * scatterlist must have been previously dma mapped @@ -56,5 +76,7 @@ static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int sg_count, u16 offset) { sec4_sg_ptr = sg_to_sec4_sg(sg, sg_count, sec4_sg_ptr, offset); - sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN); + sg_to_sec4_set_last(sec4_sg_ptr); } + +#endif /* _SG_SW_SEC4_H_ */