Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 350 insertions, 0 deletions

diff --git a/drivers/scsi/arm/acornscsi.h b/drivers/scsi/arm/acornscsi.h
new file mode 100644
index 000000000..376c76bc2
--- /dev/null
+++ b/drivers/scsi/arm/acornscsi.h
@@ -0,0 +1,350 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  linux/drivers/acorn/scsi/acornscsi.h
+ *
+ *  Copyright (C) 1997 Russell King
+ *
+ *  Acorn SCSI driver
+ */
+#ifndef ACORNSCSI_H
+#define ACORNSCSI_H
+
+/* SBIC registers */
+#define SBIC_OWNID		0
+#define OWNID_FS1		(1<<7)
+#define OWNID_FS2		(1<<6)
+#define OWNID_EHP		(1<<4)
+#define OWNID_EAF		(1<<3)
+
+#define SBIC_CTRL		1
+#define CTRL_DMAMODE		(1<<7)
+#define CTRL_DMADBAMODE		(1<<6)
+#define CTRL_DMABURST		(1<<5)
+#define CTRL_DMAPOLLED		0
+#define CTRL_HHP		(1<<4)
+#define CTRL_EDI		(1<<3)
+#define CTRL_IDI		(1<<2)
+#define CTRL_HA			(1<<1)
+#define CTRL_HSP		(1<<0)
+
+#define SBIC_TIMEOUT		2
+#define SBIC_TOTSECTS		3
+#define SBIC_TOTHEADS		4
+#define SBIC_TOTCYLH		5
+#define SBIC_TOTCYLL		6
+#define SBIC_LOGADDRH		7
+#define SBIC_LOGADDRM2		8
+#define SBIC_LOGADDRM1		9
+#define SBIC_LOGADDRL		10
+#define SBIC_SECTORNUM		11
+#define SBIC_HEADNUM		12
+#define SBIC_CYLH		13
+#define SBIC_CYLL		14
+#define SBIC_TARGETLUN		15
+#define TARGETLUN_TLV		(1<<7)
+#define TARGETLUN_DOK		(1<<6)
+
+#define SBIC_CMNDPHASE		16
+#define SBIC_SYNCHTRANSFER	17
+#define SYNCHTRANSFER_OF0	0x00
+#define SYNCHTRANSFER_OF1	0x01
+#define SYNCHTRANSFER_OF2	0x02
+#define SYNCHTRANSFER_OF3	0x03
+#define SYNCHTRANSFER_OF4	0x04
+#define SYNCHTRANSFER_OF5	0x05
+#define SYNCHTRANSFER_OF6	0x06
+#define SYNCHTRANSFER_OF7	0x07
+#define SYNCHTRANSFER_OF8	0x08
+#define SYNCHTRANSFER_OF9	0x09
+#define SYNCHTRANSFER_OF10	0x0A
+#define SYNCHTRANSFER_OF11	0x0B
+#define SYNCHTRANSFER_OF12	0x0C
+#define SYNCHTRANSFER_8DBA	0x00
+#define SYNCHTRANSFER_2DBA	0x20
+#define SYNCHTRANSFER_3DBA	0x30
+#define SYNCHTRANSFER_4DBA	0x40
+#define SYNCHTRANSFER_5DBA	0x50
+#define SYNCHTRANSFER_6DBA	0x60
+#define SYNCHTRANSFER_7DBA	0x70
+
+#define SBIC_TRANSCNTH		18
+#define SBIC_TRANSCNTM		19
+#define SBIC_TRANSCNTL		20
+#define SBIC_DESTID		21
+#define DESTID_SCC		(1<<7)
+#define DESTID_DPD		(1<<6)
+
+#define SBIC_SOURCEID		22
+#define SOURCEID_ER		(1<<7)
+#define SOURCEID_ES		(1<<6)
+#define SOURCEID_DSP		(1<<5)
+#define SOURCEID_SIV		(1<<4)
+
+#define SBIC_SSR		23
+#define SBIC_CMND		24
+#define CMND_RESET		0x00
+#define CMND_ABORT		0x01
+#define CMND_ASSERTATN		0x02
+#define CMND_NEGATEACK		0x03
+#define CMND_DISCONNECT		0x04
+#define CMND_RESELECT		0x05
+#define CMND_SELWITHATN		0x06
+#define CMND_SELECT		0x07
+#define CMND_SELECTATNTRANSFER	0x08
+#define CMND_SELECTTRANSFER	0x09
+#define CMND_RESELECTRXDATA	0x0A
+#define CMND_RESELECTTXDATA	0x0B
+#define CMND_WAITFORSELRECV	0x0C
+#define CMND_SENDSTATCMD	0x0D
+#define CMND_SENDDISCONNECT	0x0E
+#define CMND_SETIDI		0x0F
+#define CMND_RECEIVECMD		0x10
+#define CMND_RECEIVEDTA		0x11
+#define CMND_RECEIVEMSG		0x12
+#define CMND_RECEIVEUSP		0x13
+#define CMND_SENDCMD		0x14
+#define CMND_SENDDATA		0x15
+#define CMND_SENDMSG		0x16
+#define CMND_SENDUSP		0x17
+#define CMND_TRANSLATEADDR	0x18
+#define CMND_XFERINFO		0x20
+#define CMND_SBT		(1<<7)
+
+#define SBIC_DATA		25
+#define SBIC_ASR		26
+#define ASR_INT			(1<<7)
+#define ASR_LCI			(1<<6)
+#define ASR_BSY			(1<<5)
+#define ASR_CIP			(1<<4)
+#define ASR_PE			(1<<1)
+#define ASR_DBR			(1<<0)
+
+/* DMAC registers */
+#define DMAC_INIT		0x00
+#define INIT_8BIT		(1)
+
+#define DMAC_CHANNEL		0x80
+#define CHANNEL_0		0x00
+#define CHANNEL_1		0x01
+#define CHANNEL_2		0x02
+#define CHANNEL_3		0x03
+
+#define DMAC_TXCNTLO		0x01
+#define DMAC_TXCNTHI		0x81
+#define DMAC_TXADRLO		0x02
+#define DMAC_TXADRMD		0x82
+#define DMAC_TXADRHI		0x03
+
+#define DMAC_DEVCON0		0x04
+#define DEVCON0_AKL		(1<<7)
+#define DEVCON0_RQL		(1<<6)
+#define DEVCON0_EXW		(1<<5)
+#define DEVCON0_ROT		(1<<4)
+#define DEVCON0_CMP		(1<<3)
+#define DEVCON0_DDMA		(1<<2)
+#define DEVCON0_AHLD		(1<<1)
+#define DEVCON0_MTM		(1<<0)
+
+#define DMAC_DEVCON1		0x84
+#define DEVCON1_WEV		(1<<1)
+#define DEVCON1_BHLD		(1<<0)
+
+#define DMAC_MODECON		0x05
+#define MODECON_WOED		0x01
+#define MODECON_VERIFY		0x00
+#define MODECON_READ		0x04
+#define MODECON_WRITE		0x08
+#define MODECON_AUTOINIT	0x10
+#define MODECON_ADDRDIR		0x20
+#define MODECON_DEMAND		0x00
+#define MODECON_SINGLE		0x40
+#define MODECON_BLOCK		0x80
+#define MODECON_CASCADE		0xC0
+
+#define DMAC_STATUS		0x85
+#define STATUS_TC0		(1<<0)
+#define STATUS_RQ0		(1<<4)
+
+#define DMAC_TEMPLO		0x06
+#define DMAC_TEMPHI		0x86
+#define DMAC_REQREG		0x07
+#define DMAC_MASKREG		0x87
+#define MASKREG_M0		0x01
+#define MASKREG_M1		0x02
+#define MASKREG_M2		0x04
+#define MASKREG_M3		0x08
+
+/* miscellaneous internal variables */
+
+#define MASK_ON		(MASKREG_M3|MASKREG_M2|MASKREG_M1|MASKREG_M0)
+#define MASK_OFF	(MASKREG_M3|MASKREG_M2|MASKREG_M1)
+
+/*
+ * SCSI driver phases
+ */
+typedef enum {
+    PHASE_IDLE,					/* we're not planning on doing anything	 */
+    PHASE_CONNECTING,				/* connecting to a target		 */
+    PHASE_CONNECTED,				/* connected to a target		 */
+    PHASE_MSGOUT,				/* message out to device		 */
+    PHASE_RECONNECTED,				/* reconnected				 */
+    PHASE_COMMANDPAUSED,			/* command partly sent			 */
+    PHASE_COMMAND,				/* command all sent			 */
+    PHASE_DATAOUT,				/* data out to device			 */
+    PHASE_DATAIN,				/* data in from device			 */
+    PHASE_STATUSIN,				/* status in from device		 */
+    PHASE_MSGIN,				/* message in from device		 */
+    PHASE_DONE,					/* finished				 */
+    PHASE_ABORTED,				/* aborted				 */
+    PHASE_DISCONNECT,				/* disconnecting			 */
+} phase_t;
+
+/*
+ * After interrupt, what to do now
+ */
+typedef enum {
+    INTR_IDLE,					/* not expecting another IRQ		 */
+    INTR_NEXT_COMMAND,				/* start next command			 */
+    INTR_PROCESSING,				/* interrupt routine still processing	 */
+} intr_ret_t;
+
+/*
+ * DMA direction
+ */
+typedef enum {
+    DMA_OUT,					/* DMA from memory to chip		*/
+    DMA_IN					/* DMA from chip to memory		*/
+} dmadir_t;
+
+/*
+ * Synchronous transfer state
+ */
+typedef enum {					/* Synchronous transfer state		*/
+    SYNC_ASYNCHRONOUS,				/* don't negotiate synchronous transfers*/
+    SYNC_NEGOCIATE,				/* start negotiation			*/
+    SYNC_SENT_REQUEST,				/* sent SDTR message			*/
+    SYNC_COMPLETED,				/* received SDTR reply			*/
+} syncxfer_t;
+
+/*
+ * Command type
+ */
+typedef enum {					/* command type				*/
+    CMD_READ,					/* READ_6, READ_10, READ_12		*/
+    CMD_WRITE,					/* WRITE_6, WRITE_10, WRITE_12		*/
+    CMD_MISC,					/* Others				*/
+} cmdtype_t;
+
+/*
+ * Data phase direction
+ */
+typedef enum {					/* Data direction			*/
+    DATADIR_IN,					/* Data in phase expected		*/
+    DATADIR_OUT					/* Data out phase expected		*/
+} datadir_t;
+
+#include "queue.h"
+#include "msgqueue.h"
+
+#define STATUS_BUFFER_SIZE	32
+/*
+ * This is used to dump the previous states of the SBIC
+ */
+struct status_entry {
+	unsigned long	when;
+	unsigned char	ssr;
+	unsigned char	ph;
+	unsigned char	irq;
+	unsigned char	unused;
+};
+
+#define ADD_STATUS(_q,_ssr,_ph,_irq) \
+({									\
+	host->status[(_q)][host->status_ptr[(_q)]].when = jiffies;	\
+	host->status[(_q)][host->status_ptr[(_q)]].ssr  = (_ssr);	\
+	host->status[(_q)][host->status_ptr[(_q)]].ph   = (_ph);	\
+	host->status[(_q)][host->status_ptr[(_q)]].irq  = (_irq);	\
+	host->status_ptr[(_q)] = (host->status_ptr[(_q)] + 1) & (STATUS_BUFFER_SIZE - 1); \
+})
+
+/*
+ * AcornSCSI host specific data
+ */
+typedef struct acornscsi_hostdata {
+    /* miscellaneous */
+    struct Scsi_Host	*host;			/* host					*/
+    struct scsi_cmnd	*SCpnt;			/* currently processing command		*/
+    struct scsi_cmnd	*origSCpnt;		/* original connecting command		*/
+    void __iomem	*base;			/* memc base address 			*/
+    void __iomem	*fast;			/* fast ioc base address		*/
+
+    /* driver information */
+    struct {
+	unsigned int	irq;			/* interrupt				*/
+	phase_t		phase;			/* current phase			*/
+
+	struct {
+	    unsigned char	target;		/* reconnected target			*/
+	    unsigned char	lun;		/* reconnected lun			*/
+	    unsigned char	tag;		/* reconnected tag			*/
+	} reconnected;
+
+	struct scsi_pointer	SCp;			/* current commands data pointer	*/
+
+	MsgQueue_t	msgs;
+
+	unsigned short	last_message;		/* last message to be sent		*/
+	unsigned char	disconnectable:1;	/* this command can be disconnected	*/
+    } 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	resets;
+    } stats;
+
+    /* queue handling */
+    struct {
+	Queue_t		issue;			/* issue queue				*/
+	Queue_t		disconnected;		/* disconnected command queue		*/
+    } queues;
+
+    /* per-device info */
+    struct {
+	unsigned char	sync_xfer;		/* synchronous transfer (SBIC value)	*/
+	syncxfer_t	sync_state;		/* sync xfer negotiation state		*/
+	unsigned char	disconnect_ok:1;	/* device can disconnect		*/
+    } device[8];
+    unsigned long	busyluns[64 / sizeof(unsigned long)];/* array of bits indicating LUNs busy	*/
+
+    /* DMA info */
+    struct {
+	unsigned int	free_addr;		/* next free address			*/
+	unsigned int	start_addr;		/* start address of current transfer	*/
+	dmadir_t	direction;		/* dma direction			*/
+	unsigned int	transferred;		/* number of bytes transferred		*/
+	unsigned int	xfer_start;		/* scheduled DMA transfer start		*/
+	unsigned int	xfer_length;		/* scheduled DMA transfer length	*/
+	char		*xfer_ptr;		/* pointer to area			*/
+	unsigned char	xfer_required:1;	/* set if we need to transfer something	*/
+	unsigned char	xfer_setup:1;		/* set if DMA is setup			*/
+	unsigned char	xfer_done:1;		/* set if DMA reached end of BH list	*/
+    } dma;
+
+    /* card info */
+    struct {
+	unsigned char	page_reg;		/* current setting of page reg		*/
+    } card;
+
+    unsigned char status_ptr[9];
+    struct status_entry status[9][STATUS_BUFFER_SIZE];
+} AS_Host;
+
+#endif /* ACORNSCSI_H */