31 	sbus_readl(esp->dma_regs + (REG))
33 	sbus_writel((VAL), esp->dma_regs + (REG))
46 static int esp_sbus_setup_dma(struct esp *esp, struct platform_device *dma_of)  in esp_sbus_setup_dma()  argument
48 	esp->dma = dma_of;  in esp_sbus_setup_dma()
50 	esp->dma_regs = of_ioremap(&dma_of->resource[0], 0,  in esp_sbus_setup_dma()
53 	if (!esp->dma_regs)  in esp_sbus_setup_dma()
58 		esp->dmarev = dvmarev0;  in esp_sbus_setup_dma()
61 		esp->dmarev = dvmaesc1;  in esp_sbus_setup_dma()
64 		esp->dmarev = dvmarev1;  in esp_sbus_setup_dma()
67 		esp->dmarev = dvmarev2;  in esp_sbus_setup_dma()
70 		esp->dmarev = dvmahme;  in esp_sbus_setup_dma()
73 		esp->dmarev = dvmarevplus;  in esp_sbus_setup_dma()
81 static int esp_sbus_map_regs(struct esp *esp, int hme)  in esp_sbus_map_regs()  argument
83 	struct platform_device *op = esp->dev;  in esp_sbus_map_regs()
94 	esp->regs = of_ioremap(res, 0, SBUS_ESP_REG_SIZE, "ESP");  in esp_sbus_map_regs()
95 	if (!esp->regs)  in esp_sbus_map_regs()
101 static int esp_sbus_map_command_block(struct esp *esp)  in esp_sbus_map_command_block()  argument
103 	struct platform_device *op = esp->dev;  in esp_sbus_map_command_block()
105 	esp->command_block = dma_alloc_coherent(&op->dev, 16,  in esp_sbus_map_command_block()
106 						&esp->command_block_dma,  in esp_sbus_map_command_block()
108 	if (!esp->command_block)  in esp_sbus_map_command_block()
113 static int esp_sbus_register_irq(struct esp *esp)  in esp_sbus_register_irq()  argument
115 	struct Scsi_Host *host = esp->host;  in esp_sbus_register_irq()
116 	struct platform_device *op = esp->dev;  in esp_sbus_register_irq()
119 	return request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp);  in esp_sbus_register_irq()
122 static void esp_get_scsi_id(struct esp *esp, struct platform_device *espdma)  in esp_get_scsi_id()  argument
124 	struct platform_device *op = esp->dev;  in esp_get_scsi_id()
128 	esp->scsi_id = of_getintprop_default(dp, "initiator-id", 0xff);  in esp_get_scsi_id()
129 	if (esp->scsi_id != 0xff)  in esp_get_scsi_id()
132 	esp->scsi_id = of_getintprop_default(dp, "scsi-initiator-id", 0xff);  in esp_get_scsi_id()
133 	if (esp->scsi_id != 0xff)  in esp_get_scsi_id()
136 	esp->scsi_id = of_getintprop_default(espdma->dev.of_node,  in esp_get_scsi_id()
140 	esp->host->this_id = esp->scsi_id;  in esp_get_scsi_id()
141 	esp->scsi_id_mask = (1 << esp->scsi_id);  in esp_get_scsi_id()
144 static void esp_get_differential(struct esp *esp)  in esp_get_differential()  argument
146 	struct platform_device *op = esp->dev;  in esp_get_differential()
151 		esp->flags |= ESP_FLAG_DIFFERENTIAL;  in esp_get_differential()
153 		esp->flags &= ~ESP_FLAG_DIFFERENTIAL;  in esp_get_differential()
156 static void esp_get_clock_params(struct esp *esp)  in esp_get_clock_params()  argument
158 	struct platform_device *op = esp->dev;  in esp_get_clock_params()
169 	esp->cfreq = fmhz;  in esp_get_clock_params()
172 static void esp_get_bursts(struct esp *esp, struct platform_device *dma_of)  in esp_get_bursts()  argument
175 	struct platform_device *op = esp->dev;  in esp_get_bursts()
194 	esp->bursts = bursts;  in esp_get_bursts()
197 static void esp_sbus_get_props(struct esp *esp, struct platform_device *espdma)  in esp_sbus_get_props()  argument
199 	esp_get_scsi_id(esp, espdma);  in esp_sbus_get_props()
200 	esp_get_differential(esp);  in esp_sbus_get_props()
201 	esp_get_clock_params(esp);  in esp_sbus_get_props()
202 	esp_get_bursts(esp, espdma);  in esp_sbus_get_props()
205 static void sbus_esp_write8(struct esp *esp, u8 val, unsigned long reg)  in sbus_esp_write8()  argument
207 	sbus_writeb(val, esp->regs + (reg * 4UL));  in sbus_esp_write8()
210 static u8 sbus_esp_read8(struct esp *esp, unsigned long reg)  in sbus_esp_read8()  argument
212 	return sbus_readb(esp->regs + (reg * 4UL));  in sbus_esp_read8()
215 static dma_addr_t sbus_esp_map_single(struct esp *esp, void *buf,  in sbus_esp_map_single()  argument
218 	struct platform_device *op = esp->dev;  in sbus_esp_map_single()
223 static int sbus_esp_map_sg(struct esp *esp, struct scatterlist *sg,  in sbus_esp_map_sg()  argument
226 	struct platform_device *op = esp->dev;  in sbus_esp_map_sg()
231 static void sbus_esp_unmap_single(struct esp *esp, dma_addr_t addr,  in sbus_esp_unmap_single()  argument
234 	struct platform_device *op = esp->dev;  in sbus_esp_unmap_single()
239 static void sbus_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,  in sbus_esp_unmap_sg()  argument
242 	struct platform_device *op = esp->dev;  in sbus_esp_unmap_sg()
247 static int sbus_esp_irq_pending(struct esp *esp)  in sbus_esp_irq_pending()  argument
254 static void sbus_esp_reset_dma(struct esp *esp)  in sbus_esp_reset_dma()  argument
261 	can_do_burst16 = (esp->bursts & DMA_BURST16) != 0;  in sbus_esp_reset_dma()
262 	can_do_burst32 = (esp->bursts & DMA_BURST32) != 0;  in sbus_esp_reset_dma()
265 	op = esp->dev;  in sbus_esp_reset_dma()
269 		can_do_burst64 = (esp->bursts & DMA_BURST64) != 0;  in sbus_esp_reset_dma()
272 	if (esp->dmarev != dvmahme) {  in sbus_esp_reset_dma()
277 	switch (esp->dmarev) {  in sbus_esp_reset_dma()
282 		esp->prev_hme_dmacsr = (DMA_PARITY_OFF | DMA_2CLKS |  in sbus_esp_reset_dma()
285 		esp->prev_hme_dmacsr &= ~(DMA_ENABLE | DMA_ST_WRITE |  in sbus_esp_reset_dma()
289 			esp->prev_hme_dmacsr |= DMA_BRST64;  in sbus_esp_reset_dma()
291 			esp->prev_hme_dmacsr |= DMA_BRST32;  in sbus_esp_reset_dma()
294 			esp->prev_hme_dmacsr |= DMA_SCSI_SBUS64;  in sbus_esp_reset_dma()
295 			sbus_set_sbus64(&op->dev, esp->bursts);  in sbus_esp_reset_dma()
303 				       esp->host->unique_id);  in sbus_esp_reset_dma()
310 		dma_write32(esp->prev_hme_dmacsr, DMA_CSR);  in sbus_esp_reset_dma()
316 		if (esp->rev != ESP100) {  in sbus_esp_reset_dma()
354 static void sbus_esp_dma_drain(struct esp *esp)  in sbus_esp_dma_drain()  argument
359 	if (esp->dmarev == dvmahme)  in sbus_esp_dma_drain()
366 	if (esp->dmarev != dvmarev3 && esp->dmarev != dvmaesc1)  in sbus_esp_dma_drain()
373 			       esp->host->unique_id);  in sbus_esp_dma_drain()
380 static void sbus_esp_dma_invalidate(struct esp *esp)  in sbus_esp_dma_invalidate()  argument
382 	if (esp->dmarev == dvmahme) {  in sbus_esp_dma_invalidate()
385 		esp->prev_hme_dmacsr = ((esp->prev_hme_dmacsr |  in sbus_esp_dma_invalidate()
391 		dma_write32(esp->prev_hme_dmacsr, DMA_CSR);  in sbus_esp_dma_invalidate()
405 				       "invalidate!\n", esp->host->unique_id);  in sbus_esp_dma_invalidate()
419 static void sbus_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count,  in sbus_esp_send_dma_cmd()  argument
426 	sbus_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in sbus_esp_send_dma_cmd()
427 	sbus_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in sbus_esp_send_dma_cmd()
428 	if (esp->rev == FASHME) {  in sbus_esp_send_dma_cmd()
429 		sbus_esp_write8(esp, (esp_count >> 16) & 0xff, FAS_RLO);  in sbus_esp_send_dma_cmd()
430 		sbus_esp_write8(esp, 0, FAS_RHI);  in sbus_esp_send_dma_cmd()
432 		scsi_esp_cmd(esp, cmd);  in sbus_esp_send_dma_cmd()
434 		csr = esp->prev_hme_dmacsr;  in sbus_esp_send_dma_cmd()
440 		esp->prev_hme_dmacsr = csr;  in sbus_esp_send_dma_cmd()
453 		if (esp->dmarev == dvmaesc1) {  in sbus_esp_send_dma_cmd()
459 		scsi_esp_cmd(esp, cmd);  in sbus_esp_send_dma_cmd()
464 static int sbus_esp_dma_error(struct esp *esp)  in sbus_esp_dma_error()  argument
494 	struct esp *esp;  in esp_sbus_probe_one()  local
497 	host = scsi_host_alloc(tpnt, sizeof(struct esp));  in esp_sbus_probe_one()
504 	esp = shost_priv(host);  in esp_sbus_probe_one()
506 	esp->host = host;  in esp_sbus_probe_one()
507 	esp->dev = op;  in esp_sbus_probe_one()
508 	esp->ops = &sbus_esp_ops;  in esp_sbus_probe_one()
511 		esp->flags |= ESP_FLAG_WIDE_CAPABLE;  in esp_sbus_probe_one()
513 	err = esp_sbus_setup_dma(esp, espdma);  in esp_sbus_probe_one()
517 	err = esp_sbus_map_regs(esp, hme);  in esp_sbus_probe_one()
521 	err = esp_sbus_map_command_block(esp);  in esp_sbus_probe_one()
525 	err = esp_sbus_register_irq(esp);  in esp_sbus_probe_one()
529 	esp_sbus_get_props(esp, espdma);  in esp_sbus_probe_one()
535 	if (esp->dmarev == dvmaesc1) {  in esp_sbus_probe_one()
541 	dev_set_drvdata(&op->dev, esp);  in esp_sbus_probe_one()
543 	err = scsi_esp_register(esp, &op->dev);  in esp_sbus_probe_one()
550 	free_irq(host->irq, esp);  in esp_sbus_probe_one()
553 			  esp->command_block,  in esp_sbus_probe_one()
554 			  esp->command_block_dma);  in esp_sbus_probe_one()
556 	of_iounmap(&op->resource[(hme ? 1 : 0)], esp->regs, SBUS_ESP_REG_SIZE);  in esp_sbus_probe_one()
588 	struct esp *esp = dev_get_drvdata(&op->dev);  in esp_sbus_remove()  local
589 	struct platform_device *dma_of = esp->dma;  in esp_sbus_remove()
590 	unsigned int irq = esp->host->irq;  in esp_sbus_remove()
594 	scsi_esp_unregister(esp);  in esp_sbus_remove()
600 	free_irq(irq, esp);  in esp_sbus_remove()
602 	is_hme = (esp->dmarev == dvmahme);  in esp_sbus_remove()
605 			  esp->command_block,  in esp_sbus_remove()
606 			  esp->command_block_dma);  in esp_sbus_remove()
607 	of_iounmap(&op->resource[(is_hme ? 1 : 0)], esp->regs,  in esp_sbus_remove()
609 	of_iounmap(&dma_of->resource[0], esp->dma_regs,  in esp_sbus_remove()
612 	scsi_host_put(esp->host);  in esp_sbus_remove()