Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/arm/fas216.h b/drivers/scsi/arm/fas216.h
new file mode 100644
index 0000000..60a2a12
--- /dev/null
+++ b/drivers/scsi/arm/fas216.h
@@ -0,0 +1,394 @@
+/*
+ * linux/drivers/acorn/scsi/fas216.h
+ *
+ * Copyright (C) 1997-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * FAS216 generic driver
+ */
+#ifndef FAS216_H
+#define FAS216_H
+
+#ifndef NO_IRQ
+#define NO_IRQ 255
+#endif
+
+#include "queue.h"
+#include "msgqueue.h"
+
+/* FAS register definitions */
+
+/* transfer count low */
+#define REG_CTCL (0)
+#define REG_STCL (0)
+
+/* transfer count medium */
+#define REG_CTCM (1)
+#define REG_STCM (1)
+
+/* fifo data */
+#define REG_FF (2)
+
+/* command */
+#define REG_CMD (3)
+#define CMD_NOP 0x00
+#define CMD_FLUSHFIFO 0x01
+#define CMD_RESETCHIP 0x02
+#define CMD_RESETSCSI 0x03
+
+#define CMD_TRANSFERINFO 0x10
+#define CMD_INITCMDCOMPLETE 0x11
+#define CMD_MSGACCEPTED 0x12
+#define CMD_PADBYTES 0x18
+#define CMD_SETATN 0x1a
+#define CMD_RSETATN 0x1b
+
+#define CMD_SELECTWOATN 0x41
+#define CMD_SELECTATN 0x42
+#define CMD_SELECTATNSTOP 0x43
+#define CMD_ENABLESEL 0x44
+#define CMD_DISABLESEL 0x45
+#define CMD_SELECTATN3 0x46
+#define CMD_RESEL3 0x47
+
+#define CMD_WITHDMA 0x80
+
+/* status register (read) */
+#define REG_STAT (4)
+#define STAT_IO (1 << 0) /* IO phase */
+#define STAT_CD (1 << 1) /* CD phase */
+#define STAT_MSG (1 << 2) /* MSG phase */
+#define STAT_TRANSFERDONE (1 << 3) /* Transfer completed */
+#define STAT_TRANSFERCNTZ (1 << 4) /* Transfer counter is zero */
+#define STAT_PARITYERROR (1 << 5) /* Parity error */
+#define STAT_REALBAD (1 << 6) /* Something bad */
+#define STAT_INT (1 << 7) /* Interrupt */
+
+#define STAT_BUSMASK (STAT_MSG|STAT_CD|STAT_IO)
+#define STAT_DATAOUT (0) /* Data out */
+#define STAT_DATAIN (STAT_IO) /* Data in */
+#define STAT_COMMAND (STAT_CD) /* Command out */
+#define STAT_STATUS (STAT_CD|STAT_IO) /* Status In */
+#define STAT_MESGOUT (STAT_MSG|STAT_CD) /* Message out */
+#define STAT_MESGIN (STAT_MSG|STAT_CD|STAT_IO) /* Message In */
+
+/* bus ID for select / reselect */
+#define REG_SDID (4)
+#define BUSID(target) ((target) & 7)
+
+/* Interrupt status register (read) */
+#define REG_INST (5)
+#define INST_SELWOATN (1 << 0) /* Select w/o ATN */
+#define INST_SELATN (1 << 1) /* Select w/ATN */
+#define INST_RESELECTED (1 << 2) /* Reselected */
+#define INST_FUNCDONE (1 << 3) /* Function done */
+#define INST_BUSSERVICE (1 << 4) /* Bus service */
+#define INST_DISCONNECT (1 << 5) /* Disconnect */
+#define INST_ILLEGALCMD (1 << 6) /* Illegal command */
+#define INST_BUSRESET (1 << 7) /* SCSI Bus reset */
+
+/* Timeout register (write) */
+#define REG_STIM (5)
+
+/* Sequence step register (read) */
+#define REG_IS (6)
+#define IS_BITS 0x07
+#define IS_SELARB 0x00 /* Select & Arb ok */
+#define IS_MSGBYTESENT 0x01 /* One byte message sent*/
+#define IS_NOTCOMMAND 0x02 /* Not in command state */
+#define IS_EARLYPHASE 0x03 /* Early phase change */
+#define IS_COMPLETE 0x04 /* Command ok */
+#define IS_SOF 0x08 /* Sync off flag */
+
+/* Transfer period step (write) */
+#define REG_STP (6)
+
+/* Synchronous Offset (write) */
+#define REG_SOF (7)
+
+/* Fifo state register (read) */
+#define REG_CFIS (7)
+#define CFIS_CF 0x1f /* Num bytes in FIFO */
+#define CFIS_IS 0xe0 /* Step */
+
+/* config register 1 */
+#define REG_CNTL1 (8)
+#define CNTL1_CID (7 << 0) /* Chip ID */
+#define CNTL1_STE (1 << 3) /* Self test enable */
+#define CNTL1_PERE (1 << 4) /* Parity enable reporting en. */
+#define CNTL1_PTE (1 << 5) /* Parity test enable */
+#define CNTL1_DISR (1 << 6) /* Disable Irq on SCSI reset */
+#define CNTL1_ETM (1 << 7) /* Extended Timing Mode */
+
+/* Clock conversion factor (read) */
+#define REG_CLKF (9)
+#define CLKF_F37MHZ 0x00 /* 35.01 - 40 MHz */
+#define CLKF_F10MHZ 0x02 /* 10 MHz */
+#define CLKF_F12MHZ 0x03 /* 10.01 - 15 MHz */
+#define CLKF_F17MHZ 0x04 /* 15.01 - 20 MHz */
+#define CLKF_F22MHZ 0x05 /* 20.01 - 25 MHz */
+#define CLKF_F27MHZ 0x06 /* 25.01 - 30 MHz */
+#define CLKF_F32MHZ 0x07 /* 30.01 - 35 MHz */
+
+/* Chip test register (write) */
+#define REG_FTM (10)
+#define TEST_FTM 0x01 /* Force target mode */
+#define TEST_FIM 0x02 /* Force initiator mode */
+#define TEST_FHI 0x04 /* Force high impedance mode */
+
+/* Configuration register 2 (read/write) */
+#define REG_CNTL2 (11)
+#define CNTL2_PGDP (1 << 0) /* Pass Th/Generate Data Parity */
+#define CNTL2_PGRP (1 << 1) /* Pass Th/Generate Reg Parity */
+#define CNTL2_ACDPE (1 << 2) /* Abort on Cmd/Data Parity Err */
+#define CNTL2_S2FE (1 << 3) /* SCSI2 Features Enable */
+#define CNTL2_TSDR (1 << 4) /* Tristate DREQ */
+#define CNTL2_SBO (1 << 5) /* Select Byte Order */
+#define CNTL2_ENF (1 << 6) /* Enable features */
+#define CNTL2_DAE (1 << 7) /* Data Alignment Enable */
+
+/* Configuration register 3 (read/write) */
+#define REG_CNTL3 (12)
+#define CNTL3_BS8 (1 << 0) /* Burst size 8 */
+#define CNTL3_MDM (1 << 1) /* Modify DMA mode */
+#define CNTL3_LBTM (1 << 2) /* Last Byte Transfer mode */
+#define CNTL3_FASTCLK (1 << 3) /* Fast SCSI clocking */
+#define CNTL3_FASTSCSI (1 << 4) /* Fast SCSI */
+#define CNTL3_G2CB (1 << 5) /* Group2 SCSI support */
+#define CNTL3_QTAG (1 << 6) /* Enable 3 byte msgs */
+#define CNTL3_ADIDCHK (1 << 7) /* Additional ID check */
+
+/* High transfer count (read/write) */
+#define REG_CTCH (14)
+#define REG_STCH (14)
+
+/* ID register (read only) */
+#define REG_ID (14)
+
+/* Data alignment */
+#define REG_DAL (15)
+
+typedef enum {
+ PHASE_IDLE, /* we're not planning on doing anything */
+ PHASE_SELECTION, /* selecting a device */
+ PHASE_SELSTEPS, /* selection with command steps */
+ PHASE_COMMAND, /* command sent */
+ PHASE_MESSAGESENT, /* selected, and we're sending cmd */
+ PHASE_DATAOUT, /* data out to device */
+ PHASE_DATAIN, /* data in from device */
+ PHASE_MSGIN, /* message in from device */
+ PHASE_MSGIN_DISCONNECT, /* disconnecting from bus */
+ PHASE_MSGOUT, /* after message out phase */
+ PHASE_MSGOUT_EXPECT, /* expecting message out */
+ PHASE_STATUS, /* status from device */
+ PHASE_DONE /* Command complete */
+} phase_t;
+
+typedef enum {
+ DMA_OUT, /* DMA from memory to chip */
+ DMA_IN /* DMA from chip to memory */
+} fasdmadir_t;
+
+typedef enum {
+ fasdma_none, /* No dma */
+ fasdma_pio, /* PIO mode */
+ fasdma_pseudo, /* Pseudo DMA */
+ fasdma_real_block, /* Real DMA, on block by block basis */
+ fasdma_real_all /* Real DMA, on request by request */
+} fasdmatype_t;
+
+typedef enum {
+ neg_wait, /* Negociate with device */
+ neg_inprogress, /* Negociation sent */
+ neg_complete, /* Negociation complete */
+ neg_targcomplete, /* Target completed negociation */
+ neg_invalid /* Negociation not supported */
+} neg_t;
+
+#define MAGIC 0x441296bdUL
+#define NR_MSGS 8
+
+#define FASCAP_DMA (1 << 0)
+#define FASCAP_PSEUDODMA (1 << 1)
+
+typedef struct {
+ unsigned long magic_start;
+ spinlock_t host_lock;
+ struct Scsi_Host *host; /* host */
+ Scsi_Cmnd *SCpnt; /* currently processing command */
+ Scsi_Cmnd *origSCpnt; /* original connecting command */
+ Scsi_Cmnd *reqSCpnt; /* request sense command */
+ Scsi_Cmnd *rstSCpnt; /* reset command */
+ Scsi_Cmnd *pending_SCpnt[8]; /* per-device pending commands */
+ int next_pending; /* next pending device */
+
+ /*
+ * Error recovery
+ */
+ wait_queue_head_t eh_wait;
+ struct timer_list eh_timer;
+ unsigned int rst_dev_status;
+ unsigned int rst_bus_status;
+
+ /* driver information */
+ struct {
+ phase_t phase; /* current phase */
+ void __iomem *io_base; /* iomem base of FAS216 */
+ unsigned int io_shift; /* shift to adjust reg offsets by */
+ unsigned char cfg[4]; /* configuration registers */
+ const char *type; /* chip type */
+ unsigned int irq; /* interrupt */
+ int dma; /* dma channel */
+
+ Scsi_Pointer SCp; /* current commands data pointer */
+
+ MsgQueue_t msgs; /* message queue for connected device */
+
+ unsigned int async_stp; /* Async transfer STP value */
+ unsigned char msgin_fifo; /* bytes in fifo at time of message in */
+ unsigned char message[256]; /* last message received from device */
+
+ unsigned char disconnectable:1; /* this command can be disconnected */
+ unsigned char aborting:1; /* aborting command */
+ } scsi;
+
+ /* statistics information */
+ struct {
+ unsigned int queues;
+ unsigned int removes;
+ unsigned int fins;
+ unsigned int reads;
+ unsigned int writes;
+ unsigned int miscs;
+ unsigned int disconnects;
+ unsigned int aborts;
+ unsigned int bus_resets;
+ unsigned int host_resets;
+ } stats;
+
+ /* configuration information */
+ struct {
+ unsigned char clockrate; /* clock rate of FAS device (MHz) */
+ unsigned char select_timeout; /* timeout (R5) */
+ unsigned char sync_max_depth; /* Synchronous xfer max fifo depth */
+ unsigned char wide_max_size; /* Maximum wide transfer size */
+ unsigned char cntl3; /* Control Reg 3 */
+ unsigned int asyncperiod; /* Async transfer period (ns) */
+ unsigned int capabilities; /* driver capabilities */
+ unsigned int disconnect_ok:1; /* Disconnects allowed? */
+ } ifcfg;
+
+ /* queue handling */
+ struct {
+ Queue_t issue; /* issue queue */
+ Queue_t disconnected; /* disconnected command queue */
+ } queues;
+
+ /* per-device info */
+ struct fas216_device {
+ unsigned char disconnect_ok:1; /* device can disconnect */
+ unsigned char parity_enabled:1; /* parity checking enabled */
+ unsigned char parity_check:1; /* need to check parity checking */
+ unsigned char period; /* sync xfer period in (*4ns) */
+ unsigned char stp; /* synchronous transfer period */
+ unsigned char sof; /* synchronous offset register */
+ unsigned char wide_xfer; /* currently negociated wide transfer */
+ neg_t sync_state; /* synchronous transfer mode */
+ neg_t wide_state; /* wide transfer mode */
+ } device[8];
+ unsigned long busyluns[64/sizeof(unsigned long)];/* array of bits indicating LUNs busy */
+
+ /* dma */
+ struct {
+ fasdmatype_t transfer_type; /* current type of DMA transfer */
+ fasdmatype_t (*setup) (struct Scsi_Host *host, Scsi_Pointer *SCp, fasdmadir_t direction, fasdmatype_t min_dma);
+ void (*pseudo)(struct Scsi_Host *host, Scsi_Pointer *SCp, fasdmadir_t direction, int transfer);
+ void (*stop) (struct Scsi_Host *host, Scsi_Pointer *SCp);
+ } dma;
+
+ /* miscellaneous */
+ int internal_done; /* flag to indicate request done */
+ unsigned long magic_end;
+} FAS216_Info;
+
+/* Function: int fas216_init (struct Scsi_Host *instance)
+ * Purpose : initialise FAS/NCR/AMD SCSI structures.
+ * Params : instance - a driver-specific filled-out structure
+ * Returns : 0 on success
+ */
+extern int fas216_init (struct Scsi_Host *instance);
+
+/* Function: int fas216_add (struct Scsi_Host *instance, struct device *dev)
+ * Purpose : initialise FAS/NCR/AMD SCSI ic.
+ * Params : instance - a driver-specific filled-out structure
+ * Returns : 0 on success
+ */
+extern int fas216_add (struct Scsi_Host *instance, struct device *dev);
+
+/* Function: int fas216_queue_command (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
+ * Purpose : queue a command for adapter to process.
+ * Params : SCpnt - Command to queue
+ * done - done function to call once command is complete
+ * Returns : 0 - success, else error
+ */
+extern int fas216_queue_command (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+
+/* Function: int fas216_noqueue_command (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
+ * Purpose : queue a command for adapter to process, and process it to completion.
+ * Params : SCpnt - Command to queue
+ * done - done function to call once command is complete
+ * Returns : 0 - success, else error
+ */
+extern int fas216_noqueue_command (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+
+/* Function: irqreturn_t fas216_intr (FAS216_Info *info)
+ * Purpose : handle interrupts from the interface to progress a command
+ * Params : info - interface to service
+ */
+extern irqreturn_t fas216_intr (FAS216_Info *info);
+
+extern void fas216_remove (struct Scsi_Host *instance);
+
+/* Function: void fas216_release (struct Scsi_Host *instance)
+ * Purpose : release all resources and put everything to bed for FAS/NCR/AMD SCSI ic.
+ * Params : instance - a driver-specific filled-out structure
+ * Returns : 0 on success
+ */
+extern void fas216_release (struct Scsi_Host *instance);
+
+extern int fas216_print_host(FAS216_Info *info, char *buffer);
+extern int fas216_print_stats(FAS216_Info *info, char *buffer);
+extern int fas216_print_devices(FAS216_Info *info, char *buffer);
+
+/* Function: int fas216_eh_abort(Scsi_Cmnd *SCpnt)
+ * Purpose : abort this command
+ * Params : SCpnt - command to abort
+ * Returns : FAILED if unable to abort
+ */
+extern int fas216_eh_abort(Scsi_Cmnd *SCpnt);
+
+/* Function: int fas216_eh_device_reset(Scsi_Cmnd *SCpnt)
+ * Purpose : Reset the device associated with this command
+ * Params : SCpnt - command specifing device to reset
+ * Returns : FAILED if unable to reset
+ */
+extern int fas216_eh_device_reset(Scsi_Cmnd *SCpnt);
+
+/* Function: int fas216_eh_bus_reset(Scsi_Cmnd *SCpnt)
+ * Purpose : Reset the complete bus associated with this command
+ * Params : SCpnt - command specifing bus to reset
+ * Returns : FAILED if unable to reset
+ */
+extern int fas216_eh_bus_reset(Scsi_Cmnd *SCpnt);
+
+/* Function: int fas216_eh_host_reset(Scsi_Cmnd *SCpnt)
+ * Purpose : Reset the host associated with this command
+ * Params : SCpnt - command specifing host to reset
+ * Returns : FAILED if unable to reset
+ */
+extern int fas216_eh_host_reset(Scsi_Cmnd *SCpnt);
+
+#endif /* FAS216_H */