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hc
2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c 
 kernel/drivers/scsi/esp_scsi.h
....@@ -78,12 +78,14 @@
7878 #define ESP_CONFIG3_IMS       0x80     /* ID msg chk'ng        (esp/fas236)  */
7979 #define ESP_CONFIG3_OBPUSH    0x80     /* Push odd-byte to dma (hme)         */
8080 
81
-/* ESP config register 4 read-write, found only on am53c974 chips */
82
-#define ESP_CONFIG4_RADE      0x04     /* Active negation */
83
-#define ESP_CONFIG4_RAE       0x08     /* Active negation on REQ and ACK */
84
-#define ESP_CONFIG4_PWD       0x20     /* Reduced power feature */
85
-#define ESP_CONFIG4_GE0       0x40     /* Glitch eater bit 0 */
86
-#define ESP_CONFIG4_GE1       0x80     /* Glitch eater bit 1 */
81
+/* ESP config register 4 read-write */
82
+#define ESP_CONFIG4_BBTE      0x01     /* Back-to-back transfers     (fsc)   */
83
+#define ESP_CONGIG4_TEST      0x02     /* Transfer counter test mode (fsc)   */
84
+#define ESP_CONFIG4_RADE      0x04     /* Active negation   (am53c974/fsc)   */
85
+#define ESP_CONFIG4_RAE       0x08     /* Act. negation REQ/ACK (am53c974)   */
86
+#define ESP_CONFIG4_PWD       0x20     /* Reduced power feature (am53c974)   */
87
+#define ESP_CONFIG4_GE0       0x40     /* Glitch eater bit 0    (am53c974)   */
88
+#define ESP_CONFIG4_GE1       0x80     /* Glitch eater bit 1    (am53c974)   */
8789 
8890 #define ESP_CONFIG_GE_12NS    (0)
8991 #define ESP_CONFIG_GE_25NS    (ESP_CONFIG_GE1)
....@@ -209,10 +211,15 @@
209211 #define ESP_TEST_TS           0x04     /* Tristate test mode */
210212 
211213 /* ESP unique ID register read-only, found on fas236+fas100a only */
214
+#define ESP_UID_FAM           0xf8     /* ESP family bitmask */
215
+
216
+#define ESP_FAMILY(uid) (((uid) & ESP_UID_FAM) >> 3)
217
+
218
+/* Values for the ESP family bits */
212219 #define ESP_UID_F100A         0x00     /* ESP FAS100A  */
213220 #define ESP_UID_F236          0x02     /* ESP FAS236   */
214
-#define ESP_UID_REV           0x07     /* ESP revision */
215
-#define ESP_UID_FAM           0xf8     /* ESP family   */
221
+#define ESP_UID_HME           0x0a     /* FAS HME      */
222
+#define ESP_UID_FSC           0x14     /* NCR/Symbios Logic 53CF9x-2 */
216223 
217224 /* ESP fifo flags register read-only */
218225 /* Note that the following implies a 16 byte FIFO on the ESP. */
....@@ -249,26 +256,25 @@
249256 #define SYNC_DEFP_FAST            0x19   /* 10mb/s */
250257 
251258 struct esp_cmd_priv {
252
-	union {
253
-		dma_addr_t	dma_addr;
254
-		int		num_sg;
255
-	} u;
256
-
259
+	int			num_sg;
257260 	int			cur_residue;
261
+	struct scatterlist	*prv_sg;
258262 	struct scatterlist	*cur_sg;
259263 	int			tot_residue;
260264 };
261265 #define ESP_CMD_PRIV(CMD)	((struct esp_cmd_priv *)(&(CMD)->SCp))
262266 
267
+/* NOTE: this enum is ordered based on chip features! */
263268 enum esp_rev {
264
-	ESP100     = 0x00,  /* NCR53C90 - very broken */
265
-	ESP100A    = 0x01,  /* NCR53C90A */
266
-	ESP236     = 0x02,
267
-	FAS236     = 0x03,
268
-	FAS100A    = 0x04,
269
-	FAST       = 0x05,
270
-	FASHME     = 0x06,
271
-	PCSCSI     = 0x07,  /* AM53c974 */
269
+	ESP100,  /* NCR53C90 - very broken */
270
+	ESP100A, /* NCR53C90A */
271
+	ESP236,
272
+	FAS236,
273
+	PCSCSI,  /* AM53c974 */
274
+	FSC,     /* NCR/Symbios Logic 53CF9x-2 */
275
+	FAS100A,
276
+	FAST,
277
+	FASHME,
272278 };
273279 
274280 struct esp_cmd_entry {
....@@ -277,6 +283,7 @@
277283 	struct scsi_cmnd	*cmd;
278284 
279285 	unsigned int		saved_cur_residue;
286
+	struct scatterlist	*saved_prv_sg;
280287 	struct scatterlist	*saved_cur_sg;
281288 	unsigned int		saved_tot_residue;
282289 
....@@ -363,19 +370,6 @@
363370 	void (*esp_write8)(struct esp *esp, u8 val, unsigned long reg);
364371 	u8 (*esp_read8)(struct esp *esp, unsigned long reg);
365372 
366
-	/* Map and unmap DMA memory.  Eventually the driver will be
367
-	 * converted to the generic DMA API as soon as SBUS is able to
368
-	 * cope with that.  At such time we can remove this.
369
-	 */
370
-	dma_addr_t (*map_single)(struct esp *esp, void *buf,
371
-				 size_t sz, int dir);
372
-	int (*map_sg)(struct esp *esp, struct scatterlist *sg,
373
-		      int num_sg, int dir);
374
-	void (*unmap_single)(struct esp *esp, dma_addr_t addr,
375
-			     size_t sz, int dir);
376
-	void (*unmap_sg)(struct esp *esp, struct scatterlist *sg,
377
-			 int num_sg, int dir);
378
-
379373 	/* Return non-zero if there is an IRQ pending.  Usually this
380374 	 * status bit lives in the DMA controller sitting in front of
381375 	 * the ESP.  This has to be accurate or else the ESP interrupt
....@@ -435,7 +429,7 @@
435429 	const struct esp_driver_ops *ops;
436430 
437431 	struct Scsi_Host	*host;
438
-	void			*dev;
432
+	struct device		*dev;
439433 
440434 	struct esp_cmd_entry	*active_cmd;
441435 
....@@ -490,11 +484,11 @@
490484 	u32			flags;
491485 #define ESP_FLAG_DIFFERENTIAL	0x00000001
492486 #define ESP_FLAG_RESETTING	0x00000002
493
-#define ESP_FLAG_DOING_SLOWCMD	0x00000004
494487 #define ESP_FLAG_WIDE_CAPABLE	0x00000008
495488 #define ESP_FLAG_QUICKIRQ_CHECK	0x00000010
496489 #define ESP_FLAG_DISABLE_SYNC	0x00000020
497490 #define ESP_FLAG_USE_FIFO	0x00000040
491
+#define ESP_FLAG_NO_DMA_MAP	0x00000080
498492 
499493 	u8			select_state;
500494 #define ESP_SELECT_NONE		0x00 /* Not selecting */
....@@ -532,7 +526,7 @@
532526 	u32			min_period;
533527 	u32			radelay;
534528 
535
-	/* Slow command state.  */
529
+	/* ESP_CMD_SELAS command state */
536530 	u8			*cmd_bytes_ptr;
537531 	int			cmd_bytes_left;
538532 
....@@ -541,6 +535,9 @@
541535 	void			*dma;
542536 	int			dmarev;
543537 
538
+	/* These are used by esp_send_pio_cmd() */
539
+	u8 __iomem		*fifo_reg;
540
+	int			send_cmd_error;
544541 	u32			send_cmd_residual;
545542 };
546543 
....@@ -570,16 +567,18 @@
570567  *     example, the DMA engine has to be reset before ESP can
571568  *     be programmed.
572569  * 11) If necessary, call dev_set_drvdata() as needed.
573
- * 12) Call scsi_esp_register() with prepared 'esp' structure
574
- *     and a device pointer if possible.
570
+ * 12) Call scsi_esp_register() with prepared 'esp' structure.
575571  * 13) Check scsi_esp_register() return value, release all resources
576572  *     if an error was returned.
577573  */
578574 extern struct scsi_host_template scsi_esp_template;
579
-extern int scsi_esp_register(struct esp *, struct device *);
575
+extern int scsi_esp_register(struct esp *);
580576 
581577 extern void scsi_esp_unregister(struct esp *);
582578 extern irqreturn_t scsi_esp_intr(int, void *);
583579 extern void scsi_esp_cmd(struct esp *, u8);
584580 
581
+extern void esp_send_pio_cmd(struct esp *esp, u32 dma_addr, u32 esp_count,
582
+			     u32 dma_count, int write, u8 cmd);
583
+
585584 #endif /* !(_ESP_SCSI_H) */