Lines Matching +full:burst +full:- +full:read
1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
22 #include <linux/dma-mapping.h>
50 "maximum write burst (default: ACPI/DT value)");
55 "maximum read burst (default: ACPI/DT value)");
65 "maximum number of read transactions (default: ACPI/DT value)");
72 if (!is_power_of_2(mgmtdev->max_write_request) || in hidma_mgmt_setup()
73 (mgmtdev->max_write_request < 128) || in hidma_mgmt_setup()
74 (mgmtdev->max_write_request > 1024)) { in hidma_mgmt_setup()
75 dev_err(&mgmtdev->pdev->dev, "invalid write request %d\n", in hidma_mgmt_setup()
76 mgmtdev->max_write_request); in hidma_mgmt_setup()
77 return -EINVAL; in hidma_mgmt_setup()
80 if (!is_power_of_2(mgmtdev->max_read_request) || in hidma_mgmt_setup()
81 (mgmtdev->max_read_request < 128) || in hidma_mgmt_setup()
82 (mgmtdev->max_read_request > 1024)) { in hidma_mgmt_setup()
83 dev_err(&mgmtdev->pdev->dev, "invalid read request %d\n", in hidma_mgmt_setup()
84 mgmtdev->max_read_request); in hidma_mgmt_setup()
85 return -EINVAL; in hidma_mgmt_setup()
88 if (mgmtdev->max_wr_xactions > HIDMA_MAX_WR_XACTIONS_MASK) { in hidma_mgmt_setup()
89 dev_err(&mgmtdev->pdev->dev, in hidma_mgmt_setup()
92 return -EINVAL; in hidma_mgmt_setup()
95 if (mgmtdev->max_rd_xactions > HIDMA_MAX_RD_XACTIONS_MASK) { in hidma_mgmt_setup()
96 dev_err(&mgmtdev->pdev->dev, in hidma_mgmt_setup()
99 return -EINVAL; in hidma_mgmt_setup()
102 for (i = 0; i < mgmtdev->dma_channels; i++) { in hidma_mgmt_setup()
103 if (mgmtdev->priority[i] > 1) { in hidma_mgmt_setup()
104 dev_err(&mgmtdev->pdev->dev, in hidma_mgmt_setup()
106 return -EINVAL; in hidma_mgmt_setup()
109 if (mgmtdev->weight[i] > HIDMA_MAX_CHANNEL_WEIGHT) { in hidma_mgmt_setup()
110 dev_err(&mgmtdev->pdev->dev, in hidma_mgmt_setup()
113 return -EINVAL; in hidma_mgmt_setup()
117 if (mgmtdev->weight[i] == 0) in hidma_mgmt_setup()
118 mgmtdev->weight[i] = 1; in hidma_mgmt_setup()
121 pm_runtime_get_sync(&mgmtdev->pdev->dev); in hidma_mgmt_setup()
122 val = readl(mgmtdev->virtaddr + HIDMA_MAX_BUS_REQ_LEN_OFFSET); in hidma_mgmt_setup()
124 val |= mgmtdev->max_write_request << HIDMA_MAX_BUS_WR_REQ_BIT_POS; in hidma_mgmt_setup()
126 val |= mgmtdev->max_read_request; in hidma_mgmt_setup()
127 writel(val, mgmtdev->virtaddr + HIDMA_MAX_BUS_REQ_LEN_OFFSET); in hidma_mgmt_setup()
129 val = readl(mgmtdev->virtaddr + HIDMA_MAX_XACTIONS_OFFSET); in hidma_mgmt_setup()
131 val |= mgmtdev->max_wr_xactions << HIDMA_MAX_WR_XACTIONS_BIT_POS; in hidma_mgmt_setup()
133 val |= mgmtdev->max_rd_xactions; in hidma_mgmt_setup()
134 writel(val, mgmtdev->virtaddr + HIDMA_MAX_XACTIONS_OFFSET); in hidma_mgmt_setup()
136 mgmtdev->hw_version = in hidma_mgmt_setup()
137 readl(mgmtdev->virtaddr + HIDMA_HW_VERSION_OFFSET); in hidma_mgmt_setup()
138 mgmtdev->hw_version_major = (mgmtdev->hw_version >> 28) & 0xF; in hidma_mgmt_setup()
139 mgmtdev->hw_version_minor = (mgmtdev->hw_version >> 16) & 0xF; in hidma_mgmt_setup()
141 for (i = 0; i < mgmtdev->dma_channels; i++) { in hidma_mgmt_setup()
142 u32 weight = mgmtdev->weight[i]; in hidma_mgmt_setup()
143 u32 priority = mgmtdev->priority[i]; in hidma_mgmt_setup()
145 val = readl(mgmtdev->virtaddr + HIDMA_QOS_N_OFFSET + (4 * i)); in hidma_mgmt_setup()
150 writel(val, mgmtdev->virtaddr + HIDMA_QOS_N_OFFSET + (4 * i)); in hidma_mgmt_setup()
153 val = readl(mgmtdev->virtaddr + HIDMA_CHRESET_TIMEOUT_OFFSET); in hidma_mgmt_setup()
155 val |= mgmtdev->chreset_timeout_cycles & HIDMA_CHRESET_TIMEOUT_MASK; in hidma_mgmt_setup()
156 writel(val, mgmtdev->virtaddr + HIDMA_CHRESET_TIMEOUT_OFFSET); in hidma_mgmt_setup()
158 pm_runtime_mark_last_busy(&mgmtdev->pdev->dev); in hidma_mgmt_setup()
159 pm_runtime_put_autosuspend(&mgmtdev->pdev->dev); in hidma_mgmt_setup()
173 pm_runtime_set_autosuspend_delay(&pdev->dev, HIDMA_AUTOSUSPEND_TIMEOUT); in hidma_mgmt_probe()
174 pm_runtime_use_autosuspend(&pdev->dev); in hidma_mgmt_probe()
175 pm_runtime_set_active(&pdev->dev); in hidma_mgmt_probe()
176 pm_runtime_enable(&pdev->dev); in hidma_mgmt_probe()
177 pm_runtime_get_sync(&pdev->dev); in hidma_mgmt_probe()
191 mgmtdev = devm_kzalloc(&pdev->dev, sizeof(*mgmtdev), GFP_KERNEL); in hidma_mgmt_probe()
193 rc = -ENOMEM; in hidma_mgmt_probe()
197 mgmtdev->pdev = pdev; in hidma_mgmt_probe()
198 mgmtdev->addrsize = resource_size(res); in hidma_mgmt_probe()
199 mgmtdev->virtaddr = virtaddr; in hidma_mgmt_probe()
201 rc = device_property_read_u32(&pdev->dev, "dma-channels", in hidma_mgmt_probe()
202 &mgmtdev->dma_channels); in hidma_mgmt_probe()
204 dev_err(&pdev->dev, "number of channels missing\n"); in hidma_mgmt_probe()
208 rc = device_property_read_u32(&pdev->dev, in hidma_mgmt_probe()
209 "channel-reset-timeout-cycles", in hidma_mgmt_probe()
210 &mgmtdev->chreset_timeout_cycles); in hidma_mgmt_probe()
212 dev_err(&pdev->dev, "channel reset timeout missing\n"); in hidma_mgmt_probe()
216 rc = device_property_read_u32(&pdev->dev, "max-write-burst-bytes", in hidma_mgmt_probe()
217 &mgmtdev->max_write_request); in hidma_mgmt_probe()
219 dev_err(&pdev->dev, "max-write-burst-bytes missing\n"); in hidma_mgmt_probe()
224 (max_write_request != mgmtdev->max_write_request)) { in hidma_mgmt_probe()
225 dev_info(&pdev->dev, "overriding max-write-burst-bytes: %d\n", in hidma_mgmt_probe()
227 mgmtdev->max_write_request = max_write_request; in hidma_mgmt_probe()
229 max_write_request = mgmtdev->max_write_request; in hidma_mgmt_probe()
231 rc = device_property_read_u32(&pdev->dev, "max-read-burst-bytes", in hidma_mgmt_probe()
232 &mgmtdev->max_read_request); in hidma_mgmt_probe()
234 dev_err(&pdev->dev, "max-read-burst-bytes missing\n"); in hidma_mgmt_probe()
238 (max_read_request != mgmtdev->max_read_request)) { in hidma_mgmt_probe()
239 dev_info(&pdev->dev, "overriding max-read-burst-bytes: %d\n", in hidma_mgmt_probe()
241 mgmtdev->max_read_request = max_read_request; in hidma_mgmt_probe()
243 max_read_request = mgmtdev->max_read_request; in hidma_mgmt_probe()
245 rc = device_property_read_u32(&pdev->dev, "max-write-transactions", in hidma_mgmt_probe()
246 &mgmtdev->max_wr_xactions); in hidma_mgmt_probe()
248 dev_err(&pdev->dev, "max-write-transactions missing\n"); in hidma_mgmt_probe()
252 (max_wr_xactions != mgmtdev->max_wr_xactions)) { in hidma_mgmt_probe()
253 dev_info(&pdev->dev, "overriding max-write-transactions: %d\n", in hidma_mgmt_probe()
255 mgmtdev->max_wr_xactions = max_wr_xactions; in hidma_mgmt_probe()
257 max_wr_xactions = mgmtdev->max_wr_xactions; in hidma_mgmt_probe()
259 rc = device_property_read_u32(&pdev->dev, "max-read-transactions", in hidma_mgmt_probe()
260 &mgmtdev->max_rd_xactions); in hidma_mgmt_probe()
262 dev_err(&pdev->dev, "max-read-transactions missing\n"); in hidma_mgmt_probe()
266 (max_rd_xactions != mgmtdev->max_rd_xactions)) { in hidma_mgmt_probe()
267 dev_info(&pdev->dev, "overriding max-read-transactions: %d\n", in hidma_mgmt_probe()
269 mgmtdev->max_rd_xactions = max_rd_xactions; in hidma_mgmt_probe()
271 max_rd_xactions = mgmtdev->max_rd_xactions; in hidma_mgmt_probe()
273 mgmtdev->priority = devm_kcalloc(&pdev->dev, in hidma_mgmt_probe()
274 mgmtdev->dma_channels, in hidma_mgmt_probe()
275 sizeof(*mgmtdev->priority), in hidma_mgmt_probe()
277 if (!mgmtdev->priority) { in hidma_mgmt_probe()
278 rc = -ENOMEM; in hidma_mgmt_probe()
282 mgmtdev->weight = devm_kcalloc(&pdev->dev, in hidma_mgmt_probe()
283 mgmtdev->dma_channels, in hidma_mgmt_probe()
284 sizeof(*mgmtdev->weight), GFP_KERNEL); in hidma_mgmt_probe()
285 if (!mgmtdev->weight) { in hidma_mgmt_probe()
286 rc = -ENOMEM; in hidma_mgmt_probe()
292 dev_err(&pdev->dev, "setup failed\n"); in hidma_mgmt_probe()
297 val = readl(mgmtdev->virtaddr + HIDMA_CFG_OFFSET); in hidma_mgmt_probe()
299 writel(val, mgmtdev->virtaddr + HIDMA_CFG_OFFSET); in hidma_mgmt_probe()
303 dev_err(&pdev->dev, "sysfs setup failed\n"); in hidma_mgmt_probe()
307 dev_info(&pdev->dev, in hidma_mgmt_probe()
309 mgmtdev->hw_version_major, mgmtdev->hw_version_minor, in hidma_mgmt_probe()
310 &res->start, mgmtdev->dma_channels); in hidma_mgmt_probe()
313 pm_runtime_mark_last_busy(&pdev->dev); in hidma_mgmt_probe()
314 pm_runtime_put_autosuspend(&pdev->dev); in hidma_mgmt_probe()
317 pm_runtime_put_sync_suspend(&pdev->dev); in hidma_mgmt_probe()
318 pm_runtime_disable(&pdev->dev); in hidma_mgmt_probe()
331 {.compatible = "qcom,hidma-mgmt-1.0",},
339 .name = "hidma-mgmt",
359 return -ENOMEM; in hidma_mgmt_of_populate_channels()
377 pdevinfo.fwnode = &child->fwnode; in hidma_mgmt_of_populate_channels()
378 pdevinfo.parent = pdev_parent ? &pdev_parent->dev : NULL; in hidma_mgmt_of_populate_channels()
379 pdevinfo.name = child->name; in hidma_mgmt_of_populate_channels()
391 new_pdev->dev.of_node = child; in hidma_mgmt_of_populate_channels()
392 of_dma_configure(&new_pdev->dev, child, true); in hidma_mgmt_of_populate_channels()
397 of_msi_configure(&new_pdev->dev, child); in hidma_mgmt_of_populate_channels()
430 * be cleaned up - this is not a trivial exercise. in hidma_mgmt_init()