Lines Matching full:ocmem
3 * The On Chip Memory (OCMEM) allocator allows various clients to allocate
4 * memory from OCMEM based on performance, latency and power requirements.
25 #include <soc/qcom/ocmem.h>
54 struct ocmem {
102 static inline void ocmem_write(struct ocmem *ocmem, u32 reg, u32 data)
104 writel(data, ocmem->mmio + reg);
107 static inline u32 ocmem_read(struct ocmem *ocmem, u32 reg)
109 return readl(ocmem->mmio + reg);
112 static void update_ocmem(struct ocmem *ocmem)
118 for (i = 0; i < ocmem->config->num_regions; i++) {
119 struct ocmem_region *region = &ocmem->regions[i];
125 dev_dbg(ocmem->dev, "ocmem_region_mode_control %x\n",
127 ocmem_write(ocmem, OCMEM_REG_REGION_MODE_CTL, region_mode_ctrl);
130 for (i = 0; i < ocmem->config->num_regions; i++) {
131 struct ocmem_region *region = &ocmem->regions[i];
139 ocmem_write(ocmem, OCMEM_REG_PSGSC_CTL(i), data);
143 static unsigned long phys_to_offset(struct ocmem *ocmem,
146 if (addr < ocmem->memory->start || addr >= ocmem->memory->end)
149 return addr - ocmem->memory->start;
152 static unsigned long device_address(struct ocmem *ocmem,
159 return phys_to_offset(ocmem, addr);
162 static void update_range(struct ocmem *ocmem, struct ocmem_buf *buf,
168 for (i = 0; i < ocmem->config->num_regions; i++) {
169 struct ocmem_region *region = &ocmem->regions[i];
183 update_ocmem(ocmem);
186 struct ocmem *of_get_ocmem(struct device *dev)
189 struct ocmem *ocmem;
204 ocmem = platform_get_drvdata(pdev);
205 if (!ocmem) {
206 dev_err(dev, "Cannot get ocmem\n");
210 return ocmem;
214 struct ocmem_buf *ocmem_allocate(struct ocmem *ocmem, enum ocmem_client client,
226 if (test_and_set_bit_lock(BIT(client), &ocmem->active_allocations))
236 buf->addr = device_address(ocmem, client, buf->offset);
239 update_range(ocmem, buf, CORE_ON, WIDE_MODE);
245 dev_err(ocmem->dev, "could not lock: %d\n", ret);
250 ocmem_write(ocmem, OCMEM_REG_GFX_MPU_START, buf->offset);
251 ocmem_write(ocmem, OCMEM_REG_GFX_MPU_END,
255 dev_dbg(ocmem->dev, "using %ldK of OCMEM at 0x%08lx for client %d\n",
261 clear_bit_unlock(BIT(client), &ocmem->active_allocations);
267 void ocmem_free(struct ocmem *ocmem, enum ocmem_client client,
274 update_range(ocmem, buf, CLK_OFF, MODE_DEFAULT);
282 dev_err(ocmem->dev, "could not unlock: %d\n", ret);
284 ocmem_write(ocmem, OCMEM_REG_GFX_MPU_START, 0x0);
285 ocmem_write(ocmem, OCMEM_REG_GFX_MPU_END, 0x0);
290 clear_bit_unlock(BIT(client), &ocmem->active_allocations);
299 struct ocmem *ocmem;
304 ocmem = devm_kzalloc(dev, sizeof(*ocmem), GFP_KERNEL);
305 if (!ocmem)
308 ocmem->dev = dev;
309 ocmem->config = device_get_match_data(dev);
311 ocmem->core_clk = devm_clk_get(dev, "core");
312 if (IS_ERR(ocmem->core_clk))
313 return dev_err_probe(dev, PTR_ERR(ocmem->core_clk),
316 ocmem->iface_clk = devm_clk_get_optional(dev, "iface");
317 if (IS_ERR(ocmem->iface_clk))
318 return dev_err_probe(dev, PTR_ERR(ocmem->iface_clk),
321 ocmem->mmio = devm_platform_ioremap_resource_byname(pdev, "ctrl");
322 if (IS_ERR(ocmem->mmio))
323 return dev_err_probe(&pdev->dev, PTR_ERR(ocmem->mmio),
326 ocmem->memory = platform_get_resource_byname(pdev, IORESOURCE_MEM,
328 if (!ocmem->memory) {
334 WARN_ON(clk_set_rate(ocmem->core_clk, 1000) < 0);
336 ret = clk_prepare_enable(ocmem->core_clk);
338 return dev_err_probe(ocmem->dev, ret, "Failed to enable core clock\n");
340 ret = clk_prepare_enable(ocmem->iface_clk);
342 clk_disable_unprepare(ocmem->core_clk);
343 return dev_err_probe(ocmem->dev, ret, "Failed to enable iface clock\n");
355 reg = ocmem_read(ocmem, OCMEM_REG_HW_VERSION);
356 dev_dbg(dev, "OCMEM hardware version: %lu.%lu.%lu\n",
361 reg = ocmem_read(ocmem, OCMEM_REG_HW_PROFILE);
362 ocmem->num_ports = OCMEM_HW_PROFILE_NUM_PORTS(reg);
363 ocmem->num_macros = OCMEM_HW_PROFILE_NUM_MACROS(reg);
364 ocmem->interleaved = !!(reg & OCMEM_HW_PROFILE_INTERLEAVING);
366 num_banks = ocmem->num_ports / 2;
367 region_size = ocmem->config->macro_size * num_banks;
370 ocmem->num_ports, ocmem->config->num_regions,
371 ocmem->num_macros, ocmem->interleaved ? "" : "not ");
373 ocmem->regions = devm_kcalloc(dev, ocmem->config->num_regions,
375 if (!ocmem->regions) {
380 for (i = 0; i < ocmem->config->num_regions; i++) {
381 struct ocmem_region *region = &ocmem->regions[i];
391 if (i == (ocmem->config->num_regions - 1) &&
393 region->macro_size = ocmem->config->macro_size / 2;
396 region->macro_size = ocmem->config->macro_size;
404 platform_set_drvdata(pdev, ocmem);
409 clk_disable_unprepare(ocmem->core_clk);
410 clk_disable_unprepare(ocmem->iface_clk);
416 struct ocmem *ocmem = platform_get_drvdata(pdev);
418 clk_disable_unprepare(ocmem->core_clk);
419 clk_disable_unprepare(ocmem->iface_clk);
433 { .compatible = "qcom,msm8226-ocmem", .data = &ocmem_8226_config },
434 { .compatible = "qcom,msm8974-ocmem", .data = &ocmem_8974_config },
444 .name = "ocmem",
451 MODULE_DESCRIPTION("On Chip Memory (OCMEM) allocator for some Snapdragon SoCs");