2 /* sun3x_esp.c: ESP front-end for Sun3x systems.
44 	readl(esp->dma_regs + (REG))
46 	writel((VAL), esp->dma_regs + (REG))
49 	*(volatile u32 *)(esp->dma_regs + (REG))
51 	do { *(volatile u32 *)(esp->dma_regs + (REG)) = (VAL); } while (0)
54 static void sun3x_esp_write8(struct esp *esp, u8 val, unsigned long reg)  in sun3x_esp_write8()  argument
56 	writeb(val, esp->regs + (reg * 4UL));  in sun3x_esp_write8()
59 static u8 sun3x_esp_read8(struct esp *esp, unsigned long reg)  in sun3x_esp_read8()  argument
61 	return readb(esp->regs + (reg * 4UL));  in sun3x_esp_read8()
64 static int sun3x_esp_irq_pending(struct esp *esp)  in sun3x_esp_irq_pending()  argument
71 static void sun3x_esp_reset_dma(struct esp *esp)  in sun3x_esp_reset_dma()  argument
84 static void sun3x_esp_dma_drain(struct esp *esp)  in sun3x_esp_dma_drain()  argument
98 			printk(KERN_ALERT PFX "esp%d: DMA will not drain!\n",  in sun3x_esp_dma_drain()
99 			       esp->host->unique_id);  in sun3x_esp_dma_drain()
106 static void sun3x_esp_dma_invalidate(struct esp *esp)  in sun3x_esp_dma_invalidate()  argument
114 			printk(KERN_ALERT PFX "esp%d: DMA will not "  in sun3x_esp_dma_invalidate()
115 			       "invalidate!\n", esp->host->unique_id);  in sun3x_esp_dma_invalidate()
128 static void sun3x_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count,  in sun3x_esp_send_dma_cmd()  argument
135 	sun3x_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in sun3x_esp_send_dma_cmd()
136 	sun3x_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in sun3x_esp_send_dma_cmd()
146 	scsi_esp_cmd(esp, cmd);  in sun3x_esp_send_dma_cmd()
149 static int sun3x_esp_dma_error(struct esp *esp)  in sun3x_esp_dma_error()  argument
174 	struct esp *esp;  in esp_sun3x_probe()  local
178 	host = scsi_host_alloc(tpnt, sizeof(struct esp));  in esp_sun3x_probe()
183 	esp = shost_priv(host);  in esp_sun3x_probe()
185 	esp->host = host;  in esp_sun3x_probe()
186 	esp->dev = &dev->dev;  in esp_sun3x_probe()
187 	esp->ops = &sun3x_esp_ops;  in esp_sun3x_probe()
193 	esp->regs = ioremap(res->start, 0x20);  in esp_sun3x_probe()
194 	if (!esp->regs)  in esp_sun3x_probe()
201 	esp->dma_regs = ioremap(res->start, 0x10);  in esp_sun3x_probe()
203 	esp->command_block = dma_alloc_coherent(esp->dev, 16,  in esp_sun3x_probe()
204 						&esp->command_block_dma,  in esp_sun3x_probe()
206 	if (!esp->command_block)  in esp_sun3x_probe()
213 			  "SUN3X ESP", esp);  in esp_sun3x_probe()
217 	esp->scsi_id = 7;  in esp_sun3x_probe()
218 	esp->host->this_id = esp->scsi_id;  in esp_sun3x_probe()
219 	esp->scsi_id_mask = (1 << esp->scsi_id);  in esp_sun3x_probe()
220 	esp->cfreq = 20000000;  in esp_sun3x_probe()
222 	dev_set_drvdata(&dev->dev, esp);  in esp_sun3x_probe()
224 	err = scsi_esp_register(esp);  in esp_sun3x_probe()
231 	free_irq(host->irq, esp);  in esp_sun3x_probe()
233 	dma_free_coherent(esp->dev, 16,  in esp_sun3x_probe()
234 			  esp->command_block,  in esp_sun3x_probe()
235 			  esp->command_block_dma);  in esp_sun3x_probe()
237 	iounmap(esp->dma_regs);  in esp_sun3x_probe()
239 	iounmap(esp->regs);  in esp_sun3x_probe()
248 	struct esp *esp = dev_get_drvdata(&dev->dev);  in esp_sun3x_remove()  local
249 	unsigned int irq = esp->host->irq;  in esp_sun3x_remove()
252 	scsi_esp_unregister(esp);  in esp_sun3x_remove()
258 	free_irq(irq, esp);  in esp_sun3x_remove()
259 	dma_free_coherent(esp->dev, 16,  in esp_sun3x_remove()
260 			  esp->command_block,  in esp_sun3x_remove()
261 			  esp->command_block_dma);  in esp_sun3x_remove()
263 	scsi_host_put(esp->host);  in esp_sun3x_remove()
277 MODULE_DESCRIPTION("Sun3x ESP SCSI driver");