diff options
Diffstat (limited to 'drivers/crypto/ux500/hash')
-rw-r--r-- | drivers/crypto/ux500/hash/hash_alg.h | 5 | ||||
-rw-r--r-- | drivers/crypto/ux500/hash/hash_core.c | 57 |
2 files changed, 42 insertions, 20 deletions
diff --git a/drivers/crypto/ux500/hash/hash_alg.h b/drivers/crypto/ux500/hash/hash_alg.h index cd9351cb24df..be6eb54da40f 100644 --- a/drivers/crypto/ux500/hash/hash_alg.h +++ b/drivers/crypto/ux500/hash/hash_alg.h @@ -11,6 +11,7 @@ #include <linux/bitops.h> #define HASH_BLOCK_SIZE 64 +#define HASH_DMA_FIFO 4 #define HASH_DMA_ALIGN_SIZE 4 #define HASH_DMA_PERFORMANCE_MIN_SIZE 1024 #define HASH_BYTES_PER_WORD 4 @@ -347,7 +348,8 @@ struct hash_req_ctx { /** * struct hash_device_data - structure for a hash device. - * @base: Pointer to the hardware base address. + * @base: Pointer to virtual base address of the hash device. + * @phybase: Pointer to physical memory location of the hash device. * @list_node: For inclusion in klist. * @dev: Pointer to the device dev structure. * @ctx_lock: Spinlock for current_ctx. @@ -361,6 +363,7 @@ struct hash_req_ctx { */ struct hash_device_data { struct hash_register __iomem *base; + phys_addr_t phybase; struct klist_node list_node; struct device *dev; struct spinlock ctx_lock; diff --git a/drivers/crypto/ux500/hash/hash_core.c b/drivers/crypto/ux500/hash/hash_core.c index 3b8f661d0edf..496ae6aae316 100644 --- a/drivers/crypto/ux500/hash/hash_core.c +++ b/drivers/crypto/ux500/hash/hash_core.c @@ -122,6 +122,13 @@ static void hash_dma_setup_channel(struct hash_device_data *device_data, struct device *dev) { struct hash_platform_data *platform_data = dev->platform_data; + struct dma_slave_config conf = { + .direction = DMA_MEM_TO_DEV, + .dst_addr = device_data->phybase + HASH_DMA_FIFO, + .dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, + .dst_maxburst = 16, + }; + dma_cap_zero(device_data->dma.mask); dma_cap_set(DMA_SLAVE, device_data->dma.mask); @@ -131,6 +138,8 @@ static void hash_dma_setup_channel(struct hash_device_data *device_data, platform_data->dma_filter, device_data->dma.cfg_mem2hash); + dmaengine_slave_config(device_data->dma.chan_mem2hash, &conf); + init_completion(&device_data->dma.complete); } @@ -171,9 +180,9 @@ static int hash_set_dma_transfer(struct hash_ctx *ctx, struct scatterlist *sg, dev_dbg(ctx->device->dev, "[%s]: Setting up DMA for buffer " "(TO_DEVICE)", __func__); - desc = channel->device->device_prep_slave_sg(channel, + desc = dmaengine_prep_slave_sg(channel, ctx->device->dma.sg, ctx->device->dma.sg_len, - direction, DMA_CTRL_ACK | DMA_PREP_INTERRUPT, NULL); + direction, DMA_CTRL_ACK | DMA_PREP_INTERRUPT); if (!desc) { dev_err(ctx->device->dev, "[%s]: device_prep_slave_sg() failed!", __func__); @@ -183,7 +192,7 @@ static int hash_set_dma_transfer(struct hash_ctx *ctx, struct scatterlist *sg, desc->callback = hash_dma_callback; desc->callback_param = ctx; - cookie = desc->tx_submit(desc); + cookie = dmaengine_submit(desc); dma_async_issue_pending(channel); return 0; @@ -194,7 +203,7 @@ static void hash_dma_done(struct hash_ctx *ctx) struct dma_chan *chan; chan = ctx->device->dma.chan_mem2hash; - chan->device->device_control(chan, DMA_TERMINATE_ALL, 0); + dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0); dma_unmap_sg(chan->device->dev, ctx->device->dma.sg, ctx->device->dma.sg_len, DMA_TO_DEVICE); @@ -464,12 +473,12 @@ static void hash_hw_write_key(struct hash_device_data *device_data, HASH_SET_DIN(&word, nwords); } - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); HASH_SET_DCAL; - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); } @@ -652,7 +661,7 @@ static void hash_messagepad(struct hash_device_data *device_data, if (index_bytes) HASH_SET_DIN(message, nwords); - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); /* num_of_bytes == 0 => NBLW <- 0 (32 bits valid in DATAIN) */ @@ -667,7 +676,7 @@ static void hash_messagepad(struct hash_device_data *device_data, (int)(readl_relaxed(&device_data->base->str) & HASH_STR_NBLW_MASK)); - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); } @@ -767,7 +776,7 @@ void hash_begin(struct hash_device_data *device_data, struct hash_ctx *ctx) /* HW and SW initializations */ /* Note: there is no need to initialize buffer and digest members */ - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); /* @@ -783,8 +792,7 @@ void hash_begin(struct hash_device_data *device_data, struct hash_ctx *ctx) HASH_CLEAR_BITS(&device_data->base->str, HASH_STR_NBLW_MASK); } -int hash_process_data( - struct hash_device_data *device_data, +static int hash_process_data(struct hash_device_data *device_data, struct hash_ctx *ctx, struct hash_req_ctx *req_ctx, int msg_length, u8 *data_buffer, u8 *buffer, u8 *index) { @@ -953,7 +961,7 @@ static int hash_dma_final(struct ahash_request *req) wait_for_completion(&ctx->device->dma.complete); hash_dma_done(ctx); - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); if (ctx->config.oper_mode == HASH_OPER_MODE_HMAC && ctx->key) { @@ -983,7 +991,7 @@ out: * hash_hw_final - The final hash calculation function * @req: The hash request for the job. */ -int hash_hw_final(struct ahash_request *req) +static int hash_hw_final(struct ahash_request *req) { int ret = 0; struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); @@ -1051,7 +1059,7 @@ int hash_hw_final(struct ahash_request *req) req_ctx->state.index); } else { HASH_SET_DCAL; - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); } @@ -1180,7 +1188,7 @@ int hash_resume_state(struct hash_device_data *device_data, temp_cr = device_state->temp_cr; writel_relaxed(temp_cr & HASH_CR_RESUME_MASK, &device_data->base->cr); - if (device_data->base->cr & HASH_CR_MODE_MASK) + if (readl(&device_data->base->cr) & HASH_CR_MODE_MASK) hash_mode = HASH_OPER_MODE_HMAC; else hash_mode = HASH_OPER_MODE_HASH; @@ -1224,7 +1232,7 @@ int hash_save_state(struct hash_device_data *device_data, * actually makes sure that there isn't any ongoing calculation in the * hardware. */ - while (device_data->base->str & HASH_STR_DCAL_MASK) + while (readl(&device_data->base->str) & HASH_STR_DCAL_MASK) cpu_relax(); temp_cr = readl_relaxed(&device_data->base->cr); @@ -1233,7 +1241,7 @@ int hash_save_state(struct hash_device_data *device_data, device_state->din_reg = readl_relaxed(&device_data->base->din); - if (device_data->base->cr & HASH_CR_MODE_MASK) + if (readl(&device_data->base->cr) & HASH_CR_MODE_MASK) hash_mode = HASH_OPER_MODE_HMAC; else hash_mode = HASH_OPER_MODE_HASH; @@ -1699,6 +1707,7 @@ static int ux500_hash_probe(struct platform_device *pdev) goto out_kfree; } + device_data->phybase = res->start; device_data->base = ioremap(res->start, resource_size(res)); if (!device_data->base) { dev_err(dev, "[%s] ioremap() failed!", @@ -1726,11 +1735,17 @@ static int ux500_hash_probe(struct platform_device *pdev) goto out_regulator; } + ret = clk_prepare(device_data->clk); + if (ret) { + dev_err(dev, "[%s] clk_prepare() failed!", __func__); + goto out_clk; + } + /* Enable device power (and clock) */ ret = hash_enable_power(device_data, false); if (ret) { dev_err(dev, "[%s]: hash_enable_power() failed!", __func__); - goto out_clk; + goto out_clk_unprepare; } ret = hash_check_hw(device_data); @@ -1756,12 +1771,15 @@ static int ux500_hash_probe(struct platform_device *pdev) goto out_power; } - dev_info(dev, "[%s] successfully probed\n", __func__); + dev_info(dev, "successfully registered\n"); return 0; out_power: hash_disable_power(device_data, false); +out_clk_unprepare: + clk_unprepare(device_data->clk); + out_clk: clk_put(device_data->clk); @@ -1826,6 +1844,7 @@ static int ux500_hash_remove(struct platform_device *pdev) dev_err(dev, "[%s]: hash_disable_power() failed", __func__); + clk_unprepare(device_data->clk); clk_put(device_data->clk); regulator_put(device_data->regulator); |