-From 659603c5f6cbc3d39922d4374df25ae4627d0e88 Mon Sep 17 00:00:00 2001
+From 854c1f0e9574e9b25a55b439608c71e013b34a56 Mon Sep 17 00:00:00 2001
From: Yangbo Lu <yangbo.lu@nxp.com>
Date: Mon, 25 Sep 2017 12:12:20 +0800
Subject: [PATCH] dma: support layerscape
Signed-off-by: jiaheng.fan <jiaheng.fan@nxp.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
- drivers/dma/Kconfig | 14 +
- drivers/dma/Makefile | 2 +
+ drivers/dma/Kconfig | 31 +
+ drivers/dma/Makefile | 3 +
+ drivers/dma/caam_dma.c | 563 +++++++++++++++
drivers/dma/dpaa2-qdma/Kconfig | 8 +
drivers/dma/dpaa2-qdma/Makefile | 8 +
drivers/dma/dpaa2-qdma/dpaa2-qdma.c | 986 +++++++++++++++++++++++++
drivers/dma/dpaa2-qdma/fsl_dpdmai.h | 521 ++++++++++++++
drivers/dma/dpaa2-qdma/fsl_dpdmai_cmd.h | 222 ++++++
drivers/dma/fsl-qdma.c | 1201 +++++++++++++++++++++++++++++++
- 10 files changed, 3678 insertions(+)
+ 11 files changed, 4259 insertions(+)
+ create mode 100644 drivers/dma/caam_dma.c
create mode 100644 drivers/dma/dpaa2-qdma/Kconfig
create mode 100644 drivers/dma/dpaa2-qdma/Makefile
create mode 100644 drivers/dma/dpaa2-qdma/dpaa2-qdma.c
create mode 100644 drivers/dma/dpaa2-qdma/fsl_dpdmai_cmd.h
create mode 100644 drivers/dma/fsl-qdma.c
+diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
+index 141aefbe..8caaf091 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -192,6 +192,20 @@ config FSL_EDMA
config FSL_RAID
tristate "Freescale RAID engine Support"
depends on FSL_SOC && !ASYNC_TX_ENABLE_CHANNEL_SWITCH
+@@ -564,6 +578,23 @@ config ZX_DMA
+ help
+ Support the DMA engine for ZTE ZX296702 platform devices.
+
++config CRYPTO_DEV_FSL_CAAM_DMA
++ tristate "CAAM DMA engine support"
++ depends on CRYPTO_DEV_FSL_CAAM_JR
++ default y
++ select DMA_ENGINE
++ select ASYNC_CORE
++ select ASYNC_TX_ENABLE_CHANNEL_SWITCH
++ help
++ Selecting this will offload the DMA operations for users of
++ the scatter gather memcopy API to the CAAM via job rings. The
++ CAAM is a hardware module that provides hardware acceleration to
++ cryptographic operations. It has a built-in DMA controller that can
++ be programmed to read/write cryptographic data. This module defines
++ a DMA driver that uses the DMA capabilities of the CAAM.
++
++ To compile this as a module, choose M here: the module
++ will be called caam_dma.
+
+ # driver files
+ source "drivers/dma/bestcomm/Kconfig"
+diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
+index e4dc9cac..a694da0e 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -29,6 +29,8 @@ obj-$(CONFIG_DW_DMAC_CORE) += dw/
obj-$(CONFIG_FSL_RAID) += fsl_raid.o
obj-$(CONFIG_HSU_DMA) += hsu/
obj-$(CONFIG_IMG_MDC_DMA) += img-mdc-dma.o
+@@ -67,6 +69,7 @@ obj-$(CONFIG_TI_DMA_CROSSBAR) += ti-dma-crossbar.o
+ obj-$(CONFIG_TI_EDMA) += edma.o
+ obj-$(CONFIG_XGENE_DMA) += xgene-dma.o
+ obj-$(CONFIG_ZX_DMA) += zx296702_dma.o
++obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_DMA) += caam_dma.o
+
+ obj-y += qcom/
+ obj-y += xilinx/
+diff --git a/drivers/dma/caam_dma.c b/drivers/dma/caam_dma.c
+new file mode 100644
+index 00000000..e430b320
+--- /dev/null
++++ b/drivers/dma/caam_dma.c
+@@ -0,0 +1,563 @@
++/*
++ * caam support for SG DMA
++ *
++ * Copyright 2016 Freescale Semiconductor, Inc
++ * Copyright 2017 NXP
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/dma-mapping.h>
++#include <linux/interrupt.h>
++#include <linux/slab.h>
++#include <linux/debugfs.h>
++
++#include <linux/dmaengine.h>
++#include "dmaengine.h"
++
++#include "../crypto/caam/regs.h"
++#include "../crypto/caam/jr.h"
++#include "../crypto/caam/error.h"
++#include "../crypto/caam/intern.h"
++#include "../crypto/caam/desc_constr.h"
++#include "../crypto/caam/sg_sw_sec4.h"
++
++#define DESC_DMA_MEMCPY_LEN ((CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN) / \
++ CAAM_CMD_SZ)
++
++/* This is max chunk size of a DMA transfer. If a buffer is larger than this
++ * value it is internally broken into chunks of max CAAM_DMA_CHUNK_SIZE bytes
++ * and for each chunk a DMA transfer request is issued.
++ * This value is the largest number on 16 bits that is a multiple of 256 bytes
++ * (the largest configurable CAAM DMA burst size).
++ */
++#define CAAM_DMA_CHUNK_SIZE 65280
++
++struct caam_dma_sh_desc {
++ u32 desc[DESC_DMA_MEMCPY_LEN] ____cacheline_aligned;
++ dma_addr_t desc_dma;
++};
++
++/* caam dma extended descriptor */
++struct caam_dma_edesc {
++ struct dma_async_tx_descriptor async_tx;
++ struct list_head node;
++ struct caam_dma_ctx *ctx;
++ dma_addr_t src_dma;
++ dma_addr_t dst_dma;
++ unsigned int src_len;
++ unsigned int dst_len;
++ struct sec4_sg_entry *sec4_sg;
++ u32 jd[] ____cacheline_aligned;
++};
++
++/*
++ * caam_dma_ctx - per jr/channel context
++ * @chan: dma channel used by async_tx API
++ * @node: list_head used to attach to the global dma_ctx_list
++ * @jrdev: Job Ring device
++ * @submit_q: queue of pending (submitted, but not enqueued) jobs
++ * @done_not_acked: jobs that have been completed by jr, but maybe not acked
++ * @edesc_lock: protects extended descriptor
++ */
++struct caam_dma_ctx {
++ struct dma_chan chan;
++ struct list_head node;
++ struct device *jrdev;
++ struct list_head submit_q;
++ struct list_head done_not_acked;
++ spinlock_t edesc_lock;
++};
++
++static struct dma_device *dma_dev;
++static struct caam_dma_sh_desc *dma_sh_desc;
++static LIST_HEAD(dma_ctx_list);
++
++static dma_cookie_t caam_dma_tx_submit(struct dma_async_tx_descriptor *tx)
++{
++ struct caam_dma_edesc *edesc = NULL;
++ struct caam_dma_ctx *ctx = NULL;
++ dma_cookie_t cookie;
++
++ edesc = container_of(tx, struct caam_dma_edesc, async_tx);
++ ctx = container_of(tx->chan, struct caam_dma_ctx, chan);
++
++ spin_lock_bh(&ctx->edesc_lock);
++
++ cookie = dma_cookie_assign(tx);
++ list_add_tail(&edesc->node, &ctx->submit_q);
++
++ spin_unlock_bh(&ctx->edesc_lock);
++
++ return cookie;
++}
++
++static unsigned int caam_dma_sg_dma_len(struct scatterlist *sg,
++ unsigned int nents)
++{
++ unsigned int len;
++
++ for (len = 0; sg && nents; sg = sg_next(sg), nents--)
++ len += sg_dma_len(sg);
++
++ return len;
++}
++
++static struct caam_dma_edesc *
++caam_dma_sg_edesc_alloc(struct dma_chan *chan,
++ struct scatterlist *dst_sg, unsigned int dst_nents,
++ struct scatterlist *src_sg, unsigned int src_nents,
++ unsigned long flags)
++{
++ struct caam_dma_ctx *ctx = container_of(chan, struct caam_dma_ctx,
++ chan);
++ struct device *jrdev = ctx->jrdev;
++ struct caam_dma_edesc *edesc;
++ struct sec4_sg_entry *sec4_sg;
++ dma_addr_t sec4_sg_dma_src;
++ unsigned int sec4_sg_bytes;
++
++ if (!dst_sg || !src_sg || !dst_nents || !src_nents)
++ return NULL;
++
++ sec4_sg_bytes = (src_nents + dst_nents) * sizeof(*sec4_sg);
++
++ edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN + sec4_sg_bytes,
++ GFP_DMA | GFP_NOWAIT);
++ if (!edesc)
++ return ERR_PTR(-ENOMEM);
++
++ edesc->src_len = caam_dma_sg_dma_len(src_sg, src_nents);
++ edesc->dst_len = caam_dma_sg_dma_len(dst_sg, dst_nents);
++ if (edesc->src_len != edesc->dst_len) {
++ dev_err(jrdev, "%s: src(%u) and dst(%u) len mismatch.\n",
++ __func__, edesc->src_len, edesc->dst_len);
++ kfree(edesc);
++ return ERR_PTR(-EINVAL);
++ }
++
++ dma_async_tx_descriptor_init(&edesc->async_tx, chan);
++ edesc->async_tx.tx_submit = caam_dma_tx_submit;
++ edesc->async_tx.flags = flags;
++ edesc->async_tx.cookie = -EBUSY;
++
++ /* Prepare SEC SGs */
++ edesc->sec4_sg = (void *)edesc + offsetof(struct caam_dma_edesc, jd) +
++ DESC_JOB_IO_LEN;
++
++ sec4_sg = edesc->sec4_sg;
++ sg_to_sec4_sg_last(src_sg, src_nents, sec4_sg, 0);
++
++ sec4_sg += src_nents;
++ sg_to_sec4_sg_last(dst_sg, dst_nents, sec4_sg, 0);
++
++ sec4_sg_dma_src = dma_map_single(jrdev, edesc->sec4_sg, sec4_sg_bytes,
++ DMA_TO_DEVICE);
++ if (dma_mapping_error(jrdev, sec4_sg_dma_src)) {
++ dev_err(jrdev, "error mapping segments to device\n");
++ kfree(edesc);
++ return ERR_PTR(-ENOMEM);
++ }
++
++ edesc->src_dma = sec4_sg_dma_src;
++ edesc->dst_dma = sec4_sg_dma_src + src_nents * sizeof(*sec4_sg);
++ edesc->ctx = ctx;
++
++ return edesc;
++}
++
++static void caam_jr_chan_free_edesc(struct caam_dma_edesc *edesc)
++{
++ struct caam_dma_ctx *ctx = edesc->ctx;
++ struct caam_dma_edesc *_edesc = NULL;
++
++ spin_lock_bh(&ctx->edesc_lock);
++
++ list_add_tail(&edesc->node, &ctx->done_not_acked);
++ list_for_each_entry_safe(edesc, _edesc, &ctx->done_not_acked, node) {
++ if (async_tx_test_ack(&edesc->async_tx)) {
++ list_del(&edesc->node);
++ kfree(edesc);
++ }
++ }
++
++ spin_unlock_bh(&ctx->edesc_lock);
++}
++
++static void caam_dma_done(struct device *dev, u32 *hwdesc, u32 err,
++ void *context)
++{
++ struct caam_dma_edesc *edesc = context;
++ struct caam_dma_ctx *ctx = edesc->ctx;
++ dma_async_tx_callback callback;
++ void *callback_param;
++
++ if (err)
++ caam_jr_strstatus(ctx->jrdev, err);
++
++ dma_run_dependencies(&edesc->async_tx);
++
++ spin_lock_bh(&ctx->edesc_lock);
++ dma_cookie_complete(&edesc->async_tx);
++ spin_unlock_bh(&ctx->edesc_lock);
++
++ callback = edesc->async_tx.callback;
++ callback_param = edesc->async_tx.callback_param;
++
++ dma_descriptor_unmap(&edesc->async_tx);
++
++ caam_jr_chan_free_edesc(edesc);
++
++ if (callback)
++ callback(callback_param);
++}
++
++static void caam_dma_sg_init_job_desc(struct caam_dma_edesc *edesc)
++{
++ u32 *jd = edesc->jd;
++ u32 *sh_desc = dma_sh_desc->desc;
++ dma_addr_t desc_dma = dma_sh_desc->desc_dma;
++
++ /* init the job descriptor */
++ init_job_desc_shared(jd, desc_dma, desc_len(sh_desc), HDR_REVERSE);
++
++ /* set SEQIN PTR */
++ append_seq_in_ptr(jd, edesc->src_dma, edesc->src_len, LDST_SGF);
++
++ /* set SEQOUT PTR */
++ append_seq_out_ptr(jd, edesc->dst_dma, edesc->dst_len, LDST_SGF);
++
++#ifdef DEBUG
++ print_hex_dump(KERN_ERR, "caam dma desc@" __stringify(__LINE__) ": ",
++ DUMP_PREFIX_ADDRESS, 16, 4, jd, desc_bytes(jd), 1);
++#endif
++}
++
++/* This function can be called from an interrupt context */
++static struct dma_async_tx_descriptor *
++caam_dma_prep_sg(struct dma_chan *chan, struct scatterlist *dst_sg,
++ unsigned int dst_nents, struct scatterlist *src_sg,
++ unsigned int src_nents, unsigned long flags)
++{
++ struct caam_dma_edesc *edesc;
++
++ /* allocate extended descriptor */
++ edesc = caam_dma_sg_edesc_alloc(chan, dst_sg, dst_nents, src_sg,
++ src_nents, flags);
++ if (IS_ERR_OR_NULL(edesc))
++ return ERR_CAST(edesc);
++
++ /* Initialize job descriptor */
++ caam_dma_sg_init_job_desc(edesc);
++
++ return &edesc->async_tx;
++}
++
++static void caam_dma_memcpy_init_job_desc(struct caam_dma_edesc *edesc)
++{
++ u32 *jd = edesc->jd;
++ u32 *sh_desc = dma_sh_desc->desc;
++ dma_addr_t desc_dma = dma_sh_desc->desc_dma;
++
++ /* init the job descriptor */
++ init_job_desc_shared(jd, desc_dma, desc_len(sh_desc), HDR_REVERSE);
++
++ /* set SEQIN PTR */
++ append_seq_in_ptr(jd, edesc->src_dma, edesc->src_len, 0);
++
++ /* set SEQOUT PTR */
++ append_seq_out_ptr(jd, edesc->dst_dma, edesc->dst_len, 0);
++
++#ifdef DEBUG
++ print_hex_dump(KERN_ERR, "caam dma desc@" __stringify(__LINE__) ": ",
++ DUMP_PREFIX_ADDRESS, 16, 4, jd, desc_bytes(jd), 1);
++#endif
++}
++
++static struct dma_async_tx_descriptor *
++caam_dma_prep_memcpy(struct dma_chan *chan, dma_addr_t dst, dma_addr_t src,
++ size_t len, unsigned long flags)
++{
++ struct caam_dma_edesc *edesc;
++ struct caam_dma_ctx *ctx = container_of(chan, struct caam_dma_ctx,
++ chan);
++
++ edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN, GFP_DMA | GFP_NOWAIT);
++ if (!edesc)
++ return ERR_PTR(-ENOMEM);
++
++ dma_async_tx_descriptor_init(&edesc->async_tx, chan);
++ edesc->async_tx.tx_submit = caam_dma_tx_submit;
++ edesc->async_tx.flags = flags;
++ edesc->async_tx.cookie = -EBUSY;
++
++ edesc->src_dma = src;
++ edesc->src_len = len;
++ edesc->dst_dma = dst;
++ edesc->dst_len = len;
++ edesc->ctx = ctx;
++
++ caam_dma_memcpy_init_job_desc(edesc);
++
++ return &edesc->async_tx;
++}
++
++/* This function can be called in an interrupt context */
++static void caam_dma_issue_pending(struct dma_chan *chan)
++{
++ struct caam_dma_ctx *ctx = container_of(chan, struct caam_dma_ctx,
++ chan);
++ struct caam_dma_edesc *edesc, *_edesc;
++
++ spin_lock_bh(&ctx->edesc_lock);
++ list_for_each_entry_safe(edesc, _edesc, &ctx->submit_q, node) {
++ if (caam_jr_enqueue(ctx->jrdev, edesc->jd,
++ caam_dma_done, edesc) < 0)
++ break;
++ list_del(&edesc->node);
++ }
++ spin_unlock_bh(&ctx->edesc_lock);
++}
++
++static void caam_dma_free_chan_resources(struct dma_chan *chan)
++{
++ struct caam_dma_ctx *ctx = container_of(chan, struct caam_dma_ctx,
++ chan);
++ struct caam_dma_edesc *edesc, *_edesc;
++
++ spin_lock_bh(&ctx->edesc_lock);
++ list_for_each_entry_safe(edesc, _edesc, &ctx->submit_q, node) {
++ list_del(&edesc->node);
++ kfree(edesc);
++ }
++ list_for_each_entry_safe(edesc, _edesc, &ctx->done_not_acked, node) {
++ list_del(&edesc->node);
++ kfree(edesc);
++ }
++ spin_unlock_bh(&ctx->edesc_lock);
++}
++
++static int caam_dma_jr_chan_bind(void)
++{
++ struct device *jrdev;
++ struct caam_dma_ctx *ctx;
++ int bonds = 0;
++ int i;
++
++ for (i = 0; i < caam_jr_driver_probed(); i++) {
++ jrdev = caam_jridx_alloc(i);
++ if (IS_ERR(jrdev)) {
++ pr_err("job ring device %d allocation failed\n", i);
++ continue;
++ }
++
++ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
++ if (!ctx) {
++ caam_jr_free(jrdev);
++ continue;
++ }
++
++ ctx->chan.device = dma_dev;
++ ctx->chan.private = ctx;
++
++ ctx->jrdev = jrdev;
++
++ INIT_LIST_HEAD(&ctx->submit_q);
++ INIT_LIST_HEAD(&ctx->done_not_acked);
++ INIT_LIST_HEAD(&ctx->node);
++ spin_lock_init(&ctx->edesc_lock);
++
++ dma_cookie_init(&ctx->chan);
++
++ /* add the context of this channel to the context list */
++ list_add_tail(&ctx->node, &dma_ctx_list);
++
++ /* add this channel to the device chan list */
++ list_add_tail(&ctx->chan.device_node, &dma_dev->channels);
++
++ bonds++;
++ }
++
++ return bonds;
++}
++
++static inline void caam_jr_dma_free(struct dma_chan *chan)
++{
++ struct caam_dma_ctx *ctx = container_of(chan, struct caam_dma_ctx,
++ chan);
++
++ list_del(&ctx->node);
++ list_del(&chan->device_node);
++ caam_jr_free(ctx->jrdev);
++ kfree(ctx);
++}
++
++static void set_caam_dma_desc(u32 *desc)
++{
++ u32 *jmp_cmd;
++
++ /* dma shared descriptor */
++ init_sh_desc(desc, HDR_SHARE_NEVER | (1 << HDR_START_IDX_SHIFT));
++
++ /* REG1 = CAAM_DMA_CHUNK_SIZE */
++ append_math_add_imm_u32(desc, REG1, ZERO, IMM, CAAM_DMA_CHUNK_SIZE);
++
++ /* REG0 = SEQINLEN - CAAM_DMA_CHUNK_SIZE */
++ append_math_sub_imm_u32(desc, REG0, SEQINLEN, IMM, CAAM_DMA_CHUNK_SIZE);
++
++ /* if (REG0 > 0)
++ * jmp to LABEL1
++ */
++ jmp_cmd = append_jump(desc, JUMP_TEST_INVALL | JUMP_COND_MATH_N |
++ JUMP_COND_MATH_Z);
++
++ /* REG1 = SEQINLEN */
++ append_math_sub(desc, REG1, SEQINLEN, ZERO, CAAM_CMD_SZ);
++
++ /* LABEL1 */
++ set_jump_tgt_here(desc, jmp_cmd);
++
++ /* VARSEQINLEN = REG1 */
++ append_math_add(desc, VARSEQINLEN, REG1, ZERO, CAAM_CMD_SZ);
++
++ /* VARSEQOUTLEN = REG1 */
++ append_math_add(desc, VARSEQOUTLEN, REG1, ZERO, CAAM_CMD_SZ);
++
++ /* do FIFO STORE */
++ append_seq_fifo_store(desc, 0, FIFOST_TYPE_METADATA | LDST_VLF);
++
++ /* do FIFO LOAD */
++ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 |
++ FIFOLD_TYPE_IFIFO | LDST_VLF);
++
++ /* if (REG0 > 0)
++ * jmp 0xF8 (after shared desc header)
++ */
++ append_jump(desc, JUMP_TEST_INVALL | JUMP_COND_MATH_N |
++ JUMP_COND_MATH_Z | 0xF8);
++
++#ifdef DEBUG
++ print_hex_dump(KERN_ERR, "caam dma shdesc@" __stringify(__LINE__) ": ",
++ DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
++#endif
++}
++
++static int __init caam_dma_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ struct device *ctrldev = dev->parent;
++ struct dma_chan *chan, *_chan;
++ u32 *sh_desc;
++ int err = -ENOMEM;
++ int bonds;
++
++ if (!caam_jr_driver_probed()) {
++ dev_info(dev, "Defer probing after JR driver probing\n");
++ return -EPROBE_DEFER;
++ }
++
++ dma_dev = kzalloc(sizeof(*dma_dev), GFP_KERNEL);
++ if (!dma_dev)
++ return -ENOMEM;
++
++ dma_sh_desc = kzalloc(sizeof(*dma_sh_desc), GFP_KERNEL | GFP_DMA);
++ if (!dma_sh_desc)
++ goto desc_err;
++
++ sh_desc = dma_sh_desc->desc;
++ set_caam_dma_desc(sh_desc);
++ dma_sh_desc->desc_dma = dma_map_single(ctrldev, sh_desc,
++ desc_bytes(sh_desc),
++ DMA_TO_DEVICE);
++ if (dma_mapping_error(ctrldev, dma_sh_desc->desc_dma)) {
++ dev_err(dev, "unable to map dma descriptor\n");
++ goto map_err;
++ }
++
++ INIT_LIST_HEAD(&dma_dev->channels);
++
++ bonds = caam_dma_jr_chan_bind();
++ if (!bonds) {
++ err = -ENODEV;
++ goto jr_bind_err;
++ }
++
++ dma_dev->dev = dev;
++ dma_dev->residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;
++ dma_cap_set(DMA_SG, dma_dev->cap_mask);
++ dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
++ dma_cap_set(DMA_PRIVATE, dma_dev->cap_mask);
++ dma_dev->device_tx_status = dma_cookie_status;
++ dma_dev->device_issue_pending = caam_dma_issue_pending;
++ dma_dev->device_prep_dma_sg = caam_dma_prep_sg;
++ dma_dev->device_prep_dma_memcpy = caam_dma_prep_memcpy;
++ dma_dev->device_free_chan_resources = caam_dma_free_chan_resources;
++
++ err = dma_async_device_register(dma_dev);
++ if (err) {
++ dev_err(dev, "Failed to register CAAM DMA engine\n");
++ goto jr_bind_err;
++ }
++
++ dev_info(dev, "caam dma support with %d job rings\n", bonds);
++
++ return err;
++
++jr_bind_err:
++ list_for_each_entry_safe(chan, _chan, &dma_dev->channels, device_node)
++ caam_jr_dma_free(chan);
++
++ dma_unmap_single(ctrldev, dma_sh_desc->desc_dma, desc_bytes(sh_desc),
++ DMA_TO_DEVICE);
++map_err:
++ kfree(dma_sh_desc);
++desc_err:
++ kfree(dma_dev);
++ return err;
++}
++
++static int caam_dma_remove(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ struct device *ctrldev = dev->parent;
++ struct caam_dma_ctx *ctx, *_ctx;
++
++ dma_async_device_unregister(dma_dev);
++
++ list_for_each_entry_safe(ctx, _ctx, &dma_ctx_list, node) {
++ list_del(&ctx->node);
++ caam_jr_free(ctx->jrdev);
++ kfree(ctx);
++ }
++
++ dma_unmap_single(ctrldev, dma_sh_desc->desc_dma,
++ desc_bytes(dma_sh_desc->desc), DMA_TO_DEVICE);
++
++ kfree(dma_sh_desc);
++ kfree(dma_dev);
++
++ dev_info(dev, "caam dma support disabled\n");
++ return 0;
++}
++
++static const struct of_device_id caam_dma_match[] = {
++ { .compatible = "fsl,sec-v5.4-dma", },
++ { .compatible = "fsl,sec-v5.0-dma", },
++ { .compatible = "fsl,sec-v4.0-dma", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, caam_dma_match);
++
++static struct platform_driver caam_dma_driver = {
++ .driver = {
++ .name = "caam-dma",
++ .of_match_table = caam_dma_match,
++ },
++ .probe = caam_dma_probe,
++ .remove = caam_dma_remove,
++};
++module_platform_driver(caam_dma_driver);
++
++MODULE_LICENSE("Dual BSD/GPL");
++MODULE_DESCRIPTION("NXP CAAM support for SG DMA");
++MODULE_AUTHOR("NXP Semiconductors");
+diff --git a/drivers/dma/dpaa2-qdma/Kconfig b/drivers/dma/dpaa2-qdma/Kconfig
+new file mode 100644
+index 00000000..084e34bf
--- /dev/null
+++ b/drivers/dma/dpaa2-qdma/Kconfig
@@ -0,0 +1,8 @@
+ ---help---
+ NXP Data Path Acceleration Architecture 2 QDMA driver,
+ using the NXP MC bus driver.
+diff --git a/drivers/dma/dpaa2-qdma/Makefile b/drivers/dma/dpaa2-qdma/Makefile
+new file mode 100644
+index 00000000..ba599ac6
--- /dev/null
+++ b/drivers/dma/dpaa2-qdma/Makefile
@@ -0,0 +1,8 @@
+obj-$(CONFIG_FSL_DPAA2_QDMA) += fsl-dpaa2-qdma.o
+
+fsl-dpaa2-qdma-objs := dpaa2-qdma.o dpdmai.o
+diff --git a/drivers/dma/dpaa2-qdma/dpaa2-qdma.c b/drivers/dma/dpaa2-qdma/dpaa2-qdma.c
+new file mode 100644
+index 00000000..ad6b03f7
--- /dev/null
+++ b/drivers/dma/dpaa2-qdma/dpaa2-qdma.c
@@ -0,0 +1,986 @@
+
+MODULE_DESCRIPTION("NXP DPAA2 qDMA driver");
+MODULE_LICENSE("Dual BSD/GPL");
+diff --git a/drivers/dma/dpaa2-qdma/dpaa2-qdma.h b/drivers/dma/dpaa2-qdma/dpaa2-qdma.h
+new file mode 100644
+index 00000000..71a00db8
--- /dev/null
+++ b/drivers/dma/dpaa2-qdma/dpaa2-qdma.h
@@ -0,0 +1,262 @@
+#define SG_POOL_SIZE (sizeof(struct qdma_sg_blk) +\
+ sizeof(struct dpaa2_qdma_sg) * NUM_SG_PER_BLK)
+#endif /* __DPAA2_QDMA_H */
+diff --git a/drivers/dma/dpaa2-qdma/dpdmai.c b/drivers/dma/dpaa2-qdma/dpdmai.c
+new file mode 100644
+index 00000000..ad13fc1e
--- /dev/null
+++ b/drivers/dma/dpaa2-qdma/dpdmai.c
@@ -0,0 +1,454 @@
+
+ return 0;
+}
+diff --git a/drivers/dma/dpaa2-qdma/fsl_dpdmai.h b/drivers/dma/dpaa2-qdma/fsl_dpdmai.h
+new file mode 100644
+index 00000000..e931ce16
--- /dev/null
+++ b/drivers/dma/dpaa2-qdma/fsl_dpdmai.h
@@ -0,0 +1,521 @@
+ struct dpdmai_tx_queue_attr *attr);
+
+#endif /* __FSL_DPDMAI_H */
+diff --git a/drivers/dma/dpaa2-qdma/fsl_dpdmai_cmd.h b/drivers/dma/dpaa2-qdma/fsl_dpdmai_cmd.h
+new file mode 100644
+index 00000000..7d403c01
--- /dev/null
+++ b/drivers/dma/dpaa2-qdma/fsl_dpdmai_cmd.h
@@ -0,0 +1,222 @@
+ MC_RSP_OP(cmd, 1, 0, 32, uint32_t, attr->fqid)
+
+#endif /* _FSL_DPDMAI_CMD_H */
+diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c
+new file mode 100644
+index 00000000..6c4c2813
--- /dev/null
+++ b/drivers/dma/fsl-qdma.c
@@ -0,0 +1,1201 @@
+MODULE_ALIAS("platform:fsl-qdma");
+MODULE_DESCRIPTION("Freescale qDMA engine driver");
+MODULE_LICENSE("GPL v2");
+--
+2.14.1
+
projects / openwrt / staging / hauke.git / blobdiff