66 static void wpcm_fiu_set_opcode(struct wpcm_fiu_spi *fiu, u8 opcode)  in wpcm_fiu_set_opcode()  argument
68 	writeb(opcode, fiu->regs + FIU_UMA_CODE);  in wpcm_fiu_set_opcode()
71 static void wpcm_fiu_set_addr(struct wpcm_fiu_spi *fiu, u32 addr)  in wpcm_fiu_set_addr()  argument
73 	writeb((addr >>  0) & 0xff, fiu->regs + FIU_UMA_AB0);  in wpcm_fiu_set_addr()
74 	writeb((addr >>  8) & 0xff, fiu->regs + FIU_UMA_AB1);  in wpcm_fiu_set_addr()
75 	writeb((addr >> 16) & 0xff, fiu->regs + FIU_UMA_AB2);  in wpcm_fiu_set_addr()
78 static void wpcm_fiu_set_data(struct wpcm_fiu_spi *fiu, const u8 *data, unsigned int nbytes)  in wpcm_fiu_set_data()  argument
83 		writeb(data[i], fiu->regs + FIU_UMA_DB0 + i);  in wpcm_fiu_set_data()
86 static void wpcm_fiu_get_data(struct wpcm_fiu_spi *fiu, u8 *data, unsigned int nbytes)  in wpcm_fiu_get_data()  argument
91 		data[i] = readb(fiu->regs + FIU_UMA_DB0 + i);  in wpcm_fiu_get_data()
97 static int wpcm_fiu_do_uma(struct wpcm_fiu_spi *fiu, unsigned int cs,  in wpcm_fiu_do_uma()  argument
109 	writeb(cts, fiu->regs + FIU_UMA_CTS);  in wpcm_fiu_do_uma()
112 		if (!(readb(fiu->regs + FIU_UMA_CTS) & FIU_UMA_CTS_EXEC_DONE))  in wpcm_fiu_do_uma()
115 	dev_info(fiu->dev, "UMA transfer has not finished in %d iterations\n", UMA_WAIT_ITERATIONS);  in wpcm_fiu_do_uma()
119 static void wpcm_fiu_ects_assert(struct wpcm_fiu_spi *fiu, unsigned int cs)  in wpcm_fiu_ects_assert()  argument
121 	u8 ects = readb(fiu->regs + FIU_UMA_ECTS);  in wpcm_fiu_ects_assert()
124 	writeb(ects, fiu->regs + FIU_UMA_ECTS);  in wpcm_fiu_ects_assert()
127 static void wpcm_fiu_ects_deassert(struct wpcm_fiu_spi *fiu, unsigned int cs)  in wpcm_fiu_ects_deassert()  argument
129 	u8 ects = readb(fiu->regs + FIU_UMA_ECTS);  in wpcm_fiu_ects_deassert()
132 	writeb(ects, fiu->regs + FIU_UMA_ECTS);  in wpcm_fiu_ects_deassert()
152 	struct wpcm_fiu_spi *fiu = spi_controller_get_devdata(mem->spi->controller);  in wpcm_fiu_normal_exec()  local
155 	wpcm_fiu_set_opcode(fiu, op->cmd.opcode);  in wpcm_fiu_normal_exec()
156 	wpcm_fiu_set_addr(fiu, op->addr.val);  in wpcm_fiu_normal_exec()
158 		wpcm_fiu_set_data(fiu, op->data.buf.out, op->data.nbytes);  in wpcm_fiu_normal_exec()
160 	ret = wpcm_fiu_do_uma(fiu, spi_get_chipselect(mem->spi, 0), op->addr.nbytes == 3,  in wpcm_fiu_normal_exec()
164 		wpcm_fiu_get_data(fiu, op->data.buf.in, op->data.nbytes);  in wpcm_fiu_normal_exec()
197 	struct wpcm_fiu_spi *fiu = spi_controller_get_devdata(mem->spi->controller);  in wpcm_fiu_4ba_exec()  local
200 	wpcm_fiu_ects_assert(fiu, cs);  in wpcm_fiu_4ba_exec()
202 	wpcm_fiu_set_opcode(fiu, op->cmd.opcode);  in wpcm_fiu_4ba_exec()
203 	wpcm_fiu_set_addr(fiu, op->addr.val >> 8);  in wpcm_fiu_4ba_exec()
204 	wpcm_fiu_do_uma(fiu, cs, true, false, 0);  in wpcm_fiu_4ba_exec()
206 	wpcm_fiu_set_opcode(fiu, op->addr.val & 0xff);  in wpcm_fiu_4ba_exec()
207 	wpcm_fiu_set_addr(fiu, 0);  in wpcm_fiu_4ba_exec()
209 		wpcm_fiu_set_data(fiu, op->data.buf.out, op->data.nbytes);  in wpcm_fiu_4ba_exec()
210 	wpcm_fiu_do_uma(fiu, cs, false, op->data.dir == SPI_MEM_DATA_OUT, op->data.nbytes);  in wpcm_fiu_4ba_exec()
212 	wpcm_fiu_ects_deassert(fiu, cs);  in wpcm_fiu_4ba_exec()
215 		wpcm_fiu_get_data(fiu, op->data.buf.in, op->data.nbytes);  in wpcm_fiu_4ba_exec()
242 	struct wpcm_fiu_spi *fiu = spi_controller_get_devdata(mem->spi->controller);  in wpcm_fiu_rdid_exec()  local
246 	wpcm_fiu_set_opcode(fiu, op->cmd.opcode);  in wpcm_fiu_rdid_exec()
247 	wpcm_fiu_set_addr(fiu, 0);  in wpcm_fiu_rdid_exec()
248 	wpcm_fiu_do_uma(fiu, cs, false, false, 3);  in wpcm_fiu_rdid_exec()
249 	wpcm_fiu_get_data(fiu, op->data.buf.in, 3);  in wpcm_fiu_rdid_exec()
252 	wpcm_fiu_set_opcode(fiu, op->cmd.opcode);  in wpcm_fiu_rdid_exec()
253 	wpcm_fiu_set_addr(fiu, 0);  in wpcm_fiu_rdid_exec()
254 	wpcm_fiu_do_uma(fiu, cs, true, false, 3);  in wpcm_fiu_rdid_exec()
255 	wpcm_fiu_get_data(fiu, op->data.buf.in + 3, 3);  in wpcm_fiu_rdid_exec()
279 	struct wpcm_fiu_spi *fiu = spi_controller_get_devdata(mem->spi->controller);  in wpcm_fiu_dummy_exec()  local
282 	wpcm_fiu_ects_assert(fiu, cs);  in wpcm_fiu_dummy_exec()
285 	wpcm_fiu_set_opcode(fiu, op->cmd.opcode);  in wpcm_fiu_dummy_exec()
286 	wpcm_fiu_set_addr(fiu, op->addr.val);  in wpcm_fiu_dummy_exec()
287 	wpcm_fiu_do_uma(fiu, cs, op->addr.nbytes != 0, true, op->dummy.nbytes - 1);  in wpcm_fiu_dummy_exec()
290 	wpcm_fiu_set_opcode(fiu, 0);  in wpcm_fiu_dummy_exec()
291 	wpcm_fiu_set_addr(fiu, 0);  in wpcm_fiu_dummy_exec()
292 	wpcm_fiu_do_uma(fiu, cs, false, false, op->data.nbytes);  in wpcm_fiu_dummy_exec()
293 	wpcm_fiu_get_data(fiu, op->data.buf.in, op->data.nbytes);  in wpcm_fiu_dummy_exec()
295 	wpcm_fiu_ects_deassert(fiu, cs);  in wpcm_fiu_dummy_exec()
341 static void wpcm_fiu_stall_host(struct wpcm_fiu_spi *fiu, bool stall)  in wpcm_fiu_stall_host()  argument
343 	if (fiu->shm_regmap) {  in wpcm_fiu_stall_host()
344 		int res = regmap_update_bits(fiu->shm_regmap, SHM_FLASH_SIZE,  in wpcm_fiu_stall_host()
348 			dev_warn(fiu->dev, "Failed to (un)stall host memory accesses: %d\n", res);  in wpcm_fiu_stall_host()
354 	struct wpcm_fiu_spi *fiu = spi_controller_get_devdata(mem->spi->controller);  in wpcm_fiu_exec_op()  local
357 	wpcm_fiu_stall_host(fiu, true);  in wpcm_fiu_exec_op()
362 	wpcm_fiu_stall_host(fiu, false);  in wpcm_fiu_exec_op()
377 	struct wpcm_fiu_spi *fiu = spi_controller_get_devdata(desc->mem->spi->controller);  in wpcm_fiu_dirmap_create()  local
393 	if (cs * MAX_MEMORY_SIZE_PER_CS + desc->info.offset + desc->info.length > fiu->memory_size)  in wpcm_fiu_dirmap_create()
401 	struct wpcm_fiu_spi *fiu = spi_controller_get_devdata(desc->mem->spi->controller);  in wpcm_fiu_direct_read()  local
409 	if (!fiu->memory || offs >= fiu->memory_size)  in wpcm_fiu_direct_read()
412 	len = min_t(size_t, len, fiu->memory_size - offs);  in wpcm_fiu_direct_read()
413 	memcpy_fromio(buf, fiu->memory + offs, len);  in wpcm_fiu_direct_read()
426 static void wpcm_fiu_hw_init(struct wpcm_fiu_spi *fiu)  in wpcm_fiu_hw_init()  argument
429 	writeb(FIU_BURST_CFG_R16, fiu->regs + FIU_BURST_BFG);  in wpcm_fiu_hw_init()
430 	writeb(MAX_MEMORY_SIZE_TOTAL / (512 << 10), fiu->regs + FIU_CFG);  in wpcm_fiu_hw_init()
431 	writeb(MAX_MEMORY_SIZE_PER_CS / (512 << 10) | BIT(6), fiu->regs + FIU_SPI_FL_CFG);  in wpcm_fiu_hw_init()
434 	writeb(0x0f, fiu->regs + FIU_UMA_ECTS);  in wpcm_fiu_hw_init()
441 	struct wpcm_fiu_spi *fiu;  in wpcm_fiu_probe()  local
444 	ctrl = devm_spi_alloc_host(dev, sizeof(*fiu));  in wpcm_fiu_probe()
448 	fiu = spi_controller_get_devdata(ctrl);  in wpcm_fiu_probe()
449 	fiu->dev = dev;  in wpcm_fiu_probe()
451 	fiu->regs = devm_platform_ioremap_resource_byname(pdev, "control");  in wpcm_fiu_probe()
452 	if (IS_ERR(fiu->regs))  in wpcm_fiu_probe()
453 		return dev_err_probe(dev, PTR_ERR(fiu->regs),  in wpcm_fiu_probe()
456 	fiu->clk = devm_clk_get_enabled(dev, NULL);  in wpcm_fiu_probe()
457 	if (IS_ERR(fiu->clk))  in wpcm_fiu_probe()
458 		return PTR_ERR(fiu->clk);  in wpcm_fiu_probe()
461 	fiu->memory = devm_ioremap_resource(dev, res);  in wpcm_fiu_probe()
462 	fiu->memory_size = min_t(size_t, resource_size(res), MAX_MEMORY_SIZE_TOTAL);  in wpcm_fiu_probe()
463 	if (IS_ERR(fiu->memory))  in wpcm_fiu_probe()
464 		return dev_err_probe(dev, PTR_ERR(fiu->memory),  in wpcm_fiu_probe()
467 	fiu->shm_regmap = syscon_regmap_lookup_by_phandle_optional(dev->of_node, "nuvoton,shm");  in wpcm_fiu_probe()
469 	wpcm_fiu_hw_init(fiu);  in wpcm_fiu_probe()
480 	ctrl->min_speed_hz = clk_get_rate(fiu->clk);  in wpcm_fiu_probe()
481 	ctrl->max_speed_hz = clk_get_rate(fiu->clk);  in wpcm_fiu_probe()