Lines Matching refs:esp
32 static void jazz_esp_write8(struct esp *esp, u8 val, unsigned long reg)
34 *(volatile u8 *)(esp->regs + reg) = val;
37 static u8 jazz_esp_read8(struct esp *esp, unsigned long reg)
39 return *(volatile u8 *)(esp->regs + reg);
42 static int jazz_esp_irq_pending(struct esp *esp)
44 if (jazz_esp_read8(esp, ESP_STATUS) & ESP_STAT_INTR)
49 static void jazz_esp_reset_dma(struct esp *esp)
51 vdma_disable ((int)esp->dma_regs);
54 static void jazz_esp_dma_drain(struct esp *esp)
59 static void jazz_esp_dma_invalidate(struct esp *esp)
61 vdma_disable ((int)esp->dma_regs);
64 static void jazz_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count,
69 jazz_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);
70 jazz_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);
71 vdma_disable ((int)esp->dma_regs);
73 vdma_set_mode ((int)esp->dma_regs, DMA_MODE_READ);
75 vdma_set_mode ((int)esp->dma_regs, DMA_MODE_WRITE);
77 vdma_set_addr ((int)esp->dma_regs, addr);
78 vdma_set_count ((int)esp->dma_regs, dma_count);
79 vdma_enable ((int)esp->dma_regs);
81 scsi_esp_cmd(esp, cmd);
84 static int jazz_esp_dma_error(struct esp *esp)
86 u32 enable = vdma_get_enable((int)esp->dma_regs);
109 struct esp *esp;
113 host = scsi_host_alloc(tpnt, sizeof(struct esp));
120 esp = shost_priv(host);
122 esp->host = host;
123 esp->dev = &dev->dev;
124 esp->ops = &jazz_esp_ops;
130 esp->regs = (void __iomem *)res->start;
131 if (!esp->regs)
138 esp->dma_regs = (void __iomem *)res->start;
140 esp->command_block = dma_alloc_coherent(esp->dev, 16,
141 &esp->command_block_dma,
143 if (!esp->command_block)
149 err = request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp);
153 esp->scsi_id = 7;
154 esp->host->this_id = esp->scsi_id;
155 esp->scsi_id_mask = (1 << esp->scsi_id);
156 esp->cfreq = 40000000;
158 dev_set_drvdata(&dev->dev, esp);
160 err = scsi_esp_register(esp);
167 free_irq(host->irq, esp);
169 dma_free_coherent(esp->dev, 16,
170 esp->command_block,
171 esp->command_block_dma);
181 struct esp *esp = dev_get_drvdata(&dev->dev);
182 unsigned int irq = esp->host->irq;
184 scsi_esp_unregister(esp);
186 free_irq(irq, esp);
187 dma_free_coherent(esp->dev, 16,
188 esp->command_block,
189 esp->command_block_dma);
191 scsi_host_put(esp->host);