3  * ESP front-end for Amiga ZORRO SCSI systems.
8  *               migration to ESP SCSI core
52 MODULE_DESCRIPTION("Amiga Zorro NCR5C9x (ESP) driver");
158 	struct esp *esp;		/* our ESP instance - for Scsi_host* */  member
165  * On all implementations except for the Oktagon, padding between ESP
172 static void zorro_esp_write8(struct esp *esp, u8 val, unsigned long reg)  in zorro_esp_write8()  argument
174 	writeb(val, esp->regs + (reg * 4UL));  in zorro_esp_write8()
177 static u8 zorro_esp_read8(struct esp *esp, unsigned long reg)  in zorro_esp_read8()  argument
179 	return readb(esp->regs + (reg * 4UL));  in zorro_esp_read8()
182 static int zorro_esp_irq_pending(struct esp *esp)  in zorro_esp_irq_pending()  argument
184 	/* check ESP status register; DMA has no status reg. */  in zorro_esp_irq_pending()
185 	if (zorro_esp_read8(esp, ESP_STATUS) & ESP_STAT_INTR)  in zorro_esp_irq_pending()
191 static int cyber_esp_irq_pending(struct esp *esp)  in cyber_esp_irq_pending()  argument
193 	struct cyber_dma_registers __iomem *dregs = esp->dma_regs;  in cyber_esp_irq_pending()
197 	return ((zorro_esp_read8(esp, ESP_STATUS) & ESP_STAT_INTR) &&  in cyber_esp_irq_pending()
201 static int fastlane_esp_irq_pending(struct esp *esp)  in fastlane_esp_irq_pending()  argument
203 	struct fastlane_dma_registers __iomem *dregs = esp->dma_regs;  in fastlane_esp_irq_pending()
211 	/* Return non-zero if ESP requested IRQ */  in fastlane_esp_irq_pending()
215 	   (zorro_esp_read8(esp, ESP_STATUS) & ESP_STAT_INTR));  in fastlane_esp_irq_pending()
218 static u32 zorro_esp_dma_length_limit(struct esp *esp, u32 dma_addr,  in zorro_esp_dma_length_limit()  argument
224 static u32 fastlane_esp_dma_length_limit(struct esp *esp, u32 dma_addr,  in fastlane_esp_dma_length_limit()  argument
231 static void zorro_esp_reset_dma(struct esp *esp)  in zorro_esp_reset_dma()  argument
236 static void zorro_esp_dma_drain(struct esp *esp)  in zorro_esp_dma_drain()  argument
241 static void zorro_esp_dma_invalidate(struct esp *esp)  in zorro_esp_dma_invalidate()  argument
246 static void fastlane_esp_dma_invalidate(struct esp *esp)  in fastlane_esp_dma_invalidate()  argument
248 	struct zorro_esp_priv *zep = dev_get_drvdata(esp->dev);  in fastlane_esp_dma_invalidate()
249 	struct fastlane_dma_registers __iomem *dregs = esp->dma_regs;  in fastlane_esp_dma_invalidate()
259 static void zorro_esp_send_blz1230_dma_cmd(struct esp *esp, u32 addr,  in zorro_esp_send_blz1230_dma_cmd()  argument
262 	struct blz1230_dma_registers __iomem *dregs = esp->dma_regs;  in zorro_esp_send_blz1230_dma_cmd()
263 	u8 phase = esp->sreg & ESP_STAT_PMASK;  in zorro_esp_send_blz1230_dma_cmd()
266 	 * Use PIO if transferring message bytes to esp->command_block_dma.  in zorro_esp_send_blz1230_dma_cmd()
267 	 * PIO requires a virtual address, so substitute esp->command_block  in zorro_esp_send_blz1230_dma_cmd()
270 	if (phase == ESP_MIP && addr == esp->command_block_dma) {  in zorro_esp_send_blz1230_dma_cmd()
271 		esp_send_pio_cmd(esp, (u32)esp->command_block, esp_count,  in zorro_esp_send_blz1230_dma_cmd()
276 	/* Clear the results of a possible prior esp->ops->send_dma_cmd() */  in zorro_esp_send_blz1230_dma_cmd()
277 	esp->send_cmd_error = 0;  in zorro_esp_send_blz1230_dma_cmd()
278 	esp->send_cmd_residual = 0;  in zorro_esp_send_blz1230_dma_cmd()
282 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_blz1230_dma_cmd()
286 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_blz1230_dma_cmd()
301 	scsi_esp_cmd(esp, ESP_CMD_DMA);  in zorro_esp_send_blz1230_dma_cmd()
302 	zorro_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in zorro_esp_send_blz1230_dma_cmd()
303 	zorro_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in zorro_esp_send_blz1230_dma_cmd()
305 	scsi_esp_cmd(esp, cmd);  in zorro_esp_send_blz1230_dma_cmd()
310 static void zorro_esp_send_blz1230II_dma_cmd(struct esp *esp, u32 addr,  in zorro_esp_send_blz1230II_dma_cmd()  argument
313 	struct blz1230II_dma_registers __iomem *dregs = esp->dma_regs;  in zorro_esp_send_blz1230II_dma_cmd()
314 	u8 phase = esp->sreg & ESP_STAT_PMASK;  in zorro_esp_send_blz1230II_dma_cmd()
316 	/* Use PIO if transferring message bytes to esp->command_block_dma */  in zorro_esp_send_blz1230II_dma_cmd()
317 	if (phase == ESP_MIP && addr == esp->command_block_dma) {  in zorro_esp_send_blz1230II_dma_cmd()
318 		esp_send_pio_cmd(esp, (u32)esp->command_block, esp_count,  in zorro_esp_send_blz1230II_dma_cmd()
323 	esp->send_cmd_error = 0;  in zorro_esp_send_blz1230II_dma_cmd()
324 	esp->send_cmd_residual = 0;  in zorro_esp_send_blz1230II_dma_cmd()
328 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_blz1230II_dma_cmd()
332 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_blz1230II_dma_cmd()
346 	scsi_esp_cmd(esp, ESP_CMD_DMA);  in zorro_esp_send_blz1230II_dma_cmd()
347 	zorro_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in zorro_esp_send_blz1230II_dma_cmd()
348 	zorro_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in zorro_esp_send_blz1230II_dma_cmd()
350 	scsi_esp_cmd(esp, cmd);  in zorro_esp_send_blz1230II_dma_cmd()
355 static void zorro_esp_send_blz2060_dma_cmd(struct esp *esp, u32 addr,  in zorro_esp_send_blz2060_dma_cmd()  argument
358 	struct blz2060_dma_registers __iomem *dregs = esp->dma_regs;  in zorro_esp_send_blz2060_dma_cmd()
359 	u8 phase = esp->sreg & ESP_STAT_PMASK;  in zorro_esp_send_blz2060_dma_cmd()
361 	/* Use PIO if transferring message bytes to esp->command_block_dma */  in zorro_esp_send_blz2060_dma_cmd()
362 	if (phase == ESP_MIP && addr == esp->command_block_dma) {  in zorro_esp_send_blz2060_dma_cmd()
363 		esp_send_pio_cmd(esp, (u32)esp->command_block, esp_count,  in zorro_esp_send_blz2060_dma_cmd()
368 	esp->send_cmd_error = 0;  in zorro_esp_send_blz2060_dma_cmd()
369 	esp->send_cmd_residual = 0;  in zorro_esp_send_blz2060_dma_cmd()
373 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_blz2060_dma_cmd()
377 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_blz2060_dma_cmd()
391 	scsi_esp_cmd(esp, ESP_CMD_DMA);  in zorro_esp_send_blz2060_dma_cmd()
392 	zorro_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in zorro_esp_send_blz2060_dma_cmd()
393 	zorro_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in zorro_esp_send_blz2060_dma_cmd()
395 	scsi_esp_cmd(esp, cmd);  in zorro_esp_send_blz2060_dma_cmd()
400 static void zorro_esp_send_cyber_dma_cmd(struct esp *esp, u32 addr,  in zorro_esp_send_cyber_dma_cmd()  argument
403 	struct zorro_esp_priv *zep = dev_get_drvdata(esp->dev);  in zorro_esp_send_cyber_dma_cmd()
404 	struct cyber_dma_registers __iomem *dregs = esp->dma_regs;  in zorro_esp_send_cyber_dma_cmd()
405 	u8 phase = esp->sreg & ESP_STAT_PMASK;  in zorro_esp_send_cyber_dma_cmd()
408 	/* Use PIO if transferring message bytes to esp->command_block_dma */  in zorro_esp_send_cyber_dma_cmd()
409 	if (phase == ESP_MIP && addr == esp->command_block_dma) {  in zorro_esp_send_cyber_dma_cmd()
410 		esp_send_pio_cmd(esp, (u32)esp->command_block, esp_count,  in zorro_esp_send_cyber_dma_cmd()
415 	esp->send_cmd_error = 0;  in zorro_esp_send_cyber_dma_cmd()
416 	esp->send_cmd_residual = 0;  in zorro_esp_send_cyber_dma_cmd()
418 	zorro_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in zorro_esp_send_cyber_dma_cmd()
419 	zorro_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in zorro_esp_send_cyber_dma_cmd()
423 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_cyber_dma_cmd()
428 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_cyber_dma_cmd()
447 	scsi_esp_cmd(esp, cmd);  in zorro_esp_send_cyber_dma_cmd()
452 static void zorro_esp_send_cyberII_dma_cmd(struct esp *esp, u32 addr,  in zorro_esp_send_cyberII_dma_cmd()  argument
455 	struct cyberII_dma_registers __iomem *dregs = esp->dma_regs;  in zorro_esp_send_cyberII_dma_cmd()
456 	u8 phase = esp->sreg & ESP_STAT_PMASK;  in zorro_esp_send_cyberII_dma_cmd()
458 	/* Use PIO if transferring message bytes to esp->command_block_dma */  in zorro_esp_send_cyberII_dma_cmd()
459 	if (phase == ESP_MIP && addr == esp->command_block_dma) {  in zorro_esp_send_cyberII_dma_cmd()
460 		esp_send_pio_cmd(esp, (u32)esp->command_block, esp_count,  in zorro_esp_send_cyberII_dma_cmd()
465 	esp->send_cmd_error = 0;  in zorro_esp_send_cyberII_dma_cmd()
466 	esp->send_cmd_residual = 0;  in zorro_esp_send_cyberII_dma_cmd()
468 	zorro_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in zorro_esp_send_cyberII_dma_cmd()
469 	zorro_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in zorro_esp_send_cyberII_dma_cmd()
473 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_cyberII_dma_cmd()
478 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_cyberII_dma_cmd()
488 	scsi_esp_cmd(esp, cmd);  in zorro_esp_send_cyberII_dma_cmd()
493 static void zorro_esp_send_fastlane_dma_cmd(struct esp *esp, u32 addr,  in zorro_esp_send_fastlane_dma_cmd()  argument
496 	struct zorro_esp_priv *zep = dev_get_drvdata(esp->dev);  in zorro_esp_send_fastlane_dma_cmd()
497 	struct fastlane_dma_registers __iomem *dregs = esp->dma_regs;  in zorro_esp_send_fastlane_dma_cmd()
498 	u8 phase = esp->sreg & ESP_STAT_PMASK;  in zorro_esp_send_fastlane_dma_cmd()
501 	/* Use PIO if transferring message bytes to esp->command_block_dma */  in zorro_esp_send_fastlane_dma_cmd()
502 	if (phase == ESP_MIP && addr == esp->command_block_dma) {  in zorro_esp_send_fastlane_dma_cmd()
503 		esp_send_pio_cmd(esp, (u32)esp->command_block, esp_count,  in zorro_esp_send_fastlane_dma_cmd()
508 	esp->send_cmd_error = 0;  in zorro_esp_send_fastlane_dma_cmd()
509 	esp->send_cmd_residual = 0;  in zorro_esp_send_fastlane_dma_cmd()
511 	zorro_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);  in zorro_esp_send_fastlane_dma_cmd()
512 	zorro_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);  in zorro_esp_send_fastlane_dma_cmd()
516 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_fastlane_dma_cmd()
521 		dma_sync_single_for_device(esp->dev, addr, esp_count,  in zorro_esp_send_fastlane_dma_cmd()
540 	scsi_esp_cmd(esp, cmd);  in zorro_esp_send_fastlane_dma_cmd()
543 static int zorro_esp_dma_error(struct esp *esp)  in zorro_esp_dma_error()  argument
545 	return esp->send_cmd_error;  in zorro_esp_dma_error()
548 /* per-board ESP driver ops */
718 	struct esp *esp;  in zorro_esp_probe()  local
754 	 * for presence of ESP chip later, but don't try to fix up yet.  in zorro_esp_probe()
777 	host = scsi_host_alloc(tpnt, sizeof(struct esp));  in zorro_esp_probe()
788 	esp			= shost_priv(host);  in zorro_esp_probe()
789 	esp->host		= host;  in zorro_esp_probe()
790 	esp->dev		= &z->dev;  in zorro_esp_probe()
792 	esp->scsi_id		= host->this_id;  in zorro_esp_probe()
793 	esp->scsi_id_mask	= (1 << esp->scsi_id);  in zorro_esp_probe()
795 	esp->cfreq = 40000000;  in zorro_esp_probe()
797 	zep->esp = esp;  in zorro_esp_probe()
799 	dev_set_drvdata(esp->dev, zep);  in zorro_esp_probe()
803 		/* map full address space up to ESP base for DMA */  in zorro_esp_probe()
815 	esp->ops = zdd->esp_ops;  in zorro_esp_probe()
818 		esp->regs = ioremap(ioaddr, 0x20);  in zorro_esp_probe()
821 		esp->regs = ZTWO_VADDR(ioaddr);  in zorro_esp_probe()
823 	if (!esp->regs) {  in zorro_esp_probe()
828 	esp->fifo_reg = esp->regs + ESP_FDATA * 4;  in zorro_esp_probe()
832 		zorro_esp_write8(esp, (ESP_CONFIG1_PENABLE | 7), ESP_CFG1);  in zorro_esp_probe()
833 		if (zorro_esp_read8(esp, ESP_CFG1) != (ESP_CONFIG1_PENABLE|7)) {  in zorro_esp_probe()
844 		esp->dma_regs = ioremap(dmaaddr,  in zorro_esp_probe()
848 		esp->dma_regs = ZTWO_VADDR(dmaaddr);  in zorro_esp_probe()
850 	if (!esp->dma_regs) {  in zorro_esp_probe()
855 	esp->command_block = dma_alloc_coherent(esp->dev, 16,  in zorro_esp_probe()
856 						&esp->command_block_dma,  in zorro_esp_probe()
859 	if (!esp->command_block) {  in zorro_esp_probe()
866 			  "Amiga Zorro ESP", esp);  in zorro_esp_probe()
873 	err = scsi_esp_register(esp);  in zorro_esp_probe()
883 	free_irq(host->irq, esp);  in zorro_esp_probe()
886 	dma_free_coherent(esp->dev, 16,  in zorro_esp_probe()
887 			  esp->command_block,  in zorro_esp_probe()
888 			  esp->command_block_dma);  in zorro_esp_probe()
892 		iounmap(esp->dma_regs);  in zorro_esp_probe()
896 		iounmap(esp->regs);  in zorro_esp_probe()
917 	struct esp *esp	= zep->esp;  in zorro_esp_remove()  local
918 	struct Scsi_Host *host = esp->host;  in zorro_esp_remove()
920 	scsi_esp_unregister(esp);  in zorro_esp_remove()
922 	free_irq(host->irq, esp);  in zorro_esp_remove()
923 	dma_free_coherent(esp->dev, 16,  in zorro_esp_remove()
924 			  esp->command_block,  in zorro_esp_remove()
925 			  esp->command_block_dma);  in zorro_esp_remove()
929 		iounmap(esp->dma_regs);  in zorro_esp_remove()
933 		iounmap(esp->regs);  in zorro_esp_remove()