/* SPDX-License-Identifier: GPL-2.0 */ /* Driver for 53c700 and 53c700-66 chips from NCR and Symbios * * Copyright (C) 2001 by [email protected] */ #ifndef _53C700_H #define _53C700_H #include <linux/interrupt.h> #include <asm/io.h> #include <scsi/scsi_device.h> #include <scsi/scsi_cmnd.h> /* Turn on for general debugging---too verbose for normal use */ #undef NCR_700_DEBUG /* Debug the tag queues, checking hash queue allocation and deallocation * and search for duplicate tags */ #undef NCR_700_TAG_DEBUG #ifdef NCR_700_DEBUG #define DEBUG … #define DDEBUG … #define CDEBUG … #else #define DEBUG(x) … #define DDEBUG(prefix, scmd, fmt, a...) … #define CDEBUG(prefix, scmd, fmt, a...) … #endif /* The number of available command slots */ #define NCR_700_COMMAND_SLOTS_PER_HOST … /* The maximum number of Scatter Gathers we allow */ #define NCR_700_SG_SEGMENTS … /* The maximum number of luns (make this of the form 2^n) */ #define NCR_700_MAX_LUNS … #define NCR_700_LUN_MASK … /* Maximum number of tags the driver ever allows per device */ #define NCR_700_MAX_TAGS … /* Tag depth the driver starts out with (can be altered in sysfs) */ #define NCR_700_DEFAULT_TAGS … /* This is the default number of commands per LUN in the untagged case. * two is a good value because it means we can have one command active and * one command fully prepared and waiting */ #define NCR_700_CMD_PER_LUN … /* magic byte identifying an internally generated REQUEST_SENSE command */ #define NCR_700_INTERNAL_SENSE_MAGIC … struct NCR_700_Host_Parameters; /* These are the externally used routines */ struct Scsi_Host *NCR_700_detect(struct scsi_host_template *, struct NCR_700_Host_Parameters *, struct device *); int NCR_700_release(struct Scsi_Host *host); irqreturn_t NCR_700_intr(int, void *); enum NCR_700_Host_State { … }; struct NCR_700_SG_List { … }; struct NCR_700_Device_Parameters { … }; /* The SYNC negotiation sequence looks like: * * If DEV_NEGOTIATED_SYNC not set, tack and SDTR message on to the * initial identify for the device and set DEV_BEGIN_SYNC_NEGOTIATION * If we get an SDTR reply, work out the SXFER parameters, squirrel * them away here, clear DEV_BEGIN_SYNC_NEGOTIATION and set * DEV_NEGOTIATED_SYNC. If we get a REJECT msg, squirrel * * * 0:7 SXFER_REG negotiated value for this device * 8:15 Current queue depth * 16 negotiated SYNC flag * 17 begin SYNC negotiation flag * 18 device supports tag queueing */ #define NCR_700_DEV_NEGOTIATED_SYNC … #define NCR_700_DEV_BEGIN_SYNC_NEGOTIATION … #define NCR_700_DEV_PRINT_SYNC_NEGOTIATION … static inline char *NCR_700_get_sense_cmnd(struct scsi_device *SDp) { … } static inline void NCR_700_set_depth(struct scsi_device *SDp, __u8 depth) { … } static inline __u8 NCR_700_get_depth(struct scsi_device *SDp) { … } static inline int NCR_700_is_flag_set(struct scsi_device *SDp, __u32 flag) { … } static inline int NCR_700_is_flag_clear(struct scsi_device *SDp, __u32 flag) { … } static inline void NCR_700_set_flag(struct scsi_device *SDp, __u32 flag) { … } static inline void NCR_700_clear_flag(struct scsi_device *SDp, __u32 flag) { … } enum NCR_700_tag_neg_state { … }; static inline enum NCR_700_tag_neg_state NCR_700_get_tag_neg_state(struct scsi_device *SDp) { … } static inline void NCR_700_set_tag_neg_state(struct scsi_device *SDp, enum NCR_700_tag_neg_state state) { … } struct NCR_700_command_slot { … }; struct NCR_700_Host_Parameters { … }; /* * 53C700 Register Interface - the offset from the Selected base * I/O address */ #ifdef CONFIG_53C700_LE_ON_BE #define bE … #define bSWAP … #define bEBus … #elif defined(__BIG_ENDIAN) #define bE … #define bSWAP … #elif defined(__LITTLE_ENDIAN) #define bE … #define bSWAP … #else #error "__BIG_ENDIAN or __LITTLE_ENDIAN must be defined, did you include byteorder.h?" #endif #ifndef bEBus #ifdef CONFIG_53C700_BE_BUS #define bEBus … #else #define bEBus … #endif #endif #define bS_to_cpu(x) … #define bS_to_host(x) … /* NOTE: These registers are in the LE register space only, the required byte * swapping is done by the NCR_700_{read|write}[b] functions */ #define SCNTL0_REG … #define FULL_ARBITRATION … #define PARITY … #define ENABLE_PARITY … #define AUTO_ATN … #define SCNTL1_REG … #define SLOW_BUS … #define ENABLE_SELECT … #define ASSERT_RST … #define ASSERT_EVEN_PARITY … #define SDID_REG … #define SIEN_REG … #define PHASE_MM_INT … #define FUNC_COMP_INT … #define SEL_TIMEOUT_INT … #define SELECT_INT … #define GROSS_ERR_INT … #define UX_DISC_INT … #define RST_INT … #define PAR_ERR_INT … #define SCID_REG … #define SXFER_REG … #define ASYNC_OPERATION … #define SODL_REG … #define SOCL_REG … #define SFBR_REG … #define SIDL_REG … #define SBDL_REG … #define SBCL_REG … /* read bits */ #define SBCL_IO … /*write bits */ #define SYNC_DIV_AS_ASYNC … #define SYNC_DIV_1_0 … #define SYNC_DIV_1_5 … #define SYNC_DIV_2_0 … #define DSTAT_REG … #define ILGL_INST_DETECTED … #define WATCH_DOG_INTERRUPT … #define SCRIPT_INT_RECEIVED … #define ABORTED … #define SSTAT0_REG … #define PARITY_ERROR … #define SCSI_RESET_DETECTED … #define UNEXPECTED_DISCONNECT … #define SCSI_GROSS_ERROR … #define SELECTED … #define SELECTION_TIMEOUT … #define FUNCTION_COMPLETE … #define PHASE_MISMATCH … #define SSTAT1_REG … #define SIDL_REG_FULL … #define SODR_REG_FULL … #define SODL_REG_FULL … #define SSTAT2_REG … #define CTEST0_REG … #define BTB_TIMER_DISABLE … #define CTEST1_REG … #define CTEST2_REG … #define CTEST3_REG … #define CTEST4_REG … #define DISABLE_FIFO … #define SLBE … #define SFWR … #define BYTE_LANE0 … #define BYTE_LANE1 … #define BYTE_LANE2 … #define BYTE_LANE3 … #define SCSI_ZMODE … #define ZMODE … #define CTEST5_REG … #define MASTER_CONTROL … #define DMA_DIRECTION … #define CTEST7_REG … #define BURST_DISABLE … #define SEL_TIMEOUT_DISABLE … #define DFP … #define EVP … #define CTEST7_TT1 … #define DIFF … #define CTEST6_REG … #define TEMP_REG … #define DFIFO_REG … #define FLUSH_DMA_FIFO … #define CLR_FIFO … #define ISTAT_REG … #define ABORT_OPERATION … #define SOFTWARE_RESET_710 … #define DMA_INT_PENDING … #define SCSI_INT_PENDING … #define CONNECTED … #define CTEST8_REG … #define LAST_DIS_ENBL … #define SHORTEN_FILTERING … #define ENABLE_ACTIVE_NEGATION … #define GENERATE_RECEIVE_PARITY … #define CLR_FIFO_710 … #define FLUSH_DMA_FIFO_710 … #define CTEST9_REG … #define DBC_REG … #define DCMD_REG … #define DNAD_REG … #define DIEN_REG … #define BUS_FAULT … #define ABORT_INT … #define INT_INST_INT … #define WD_INT … #define ILGL_INST_INT … #define DCNTL_REG … #define SOFTWARE_RESET … #define COMPAT_700_MODE … #define SCRPTS_16BITS … #define EA_710 … #define ASYNC_DIV_2_0 … #define ASYNC_DIV_1_5 … #define ASYNC_DIV_1_0 … #define ASYNC_DIV_3_0 … #define DMODE_710_REG … #define DMODE_700_REG … #define BURST_LENGTH_1 … #define BURST_LENGTH_2 … #define BURST_LENGTH_4 … #define BURST_LENGTH_8 … #define DMODE_FC1 … #define DMODE_FC2 … #define BW16 … #define MODE_286 … #define IO_XFER … #define FIXED_ADDR … #define DSP_REG … #define DSPS_REG … /* Parameters to begin SDTR negotiations. Empirically, I find that * the 53c700-66 cannot handle an offset >8, so don't change this */ #define NCR_700_MAX_OFFSET … /* Was hoping the max offset would be greater for the 710, but * empirically it seems to be 8 also */ #define NCR_710_MAX_OFFSET … #define NCR_700_MIN_XFERP … #define NCR_710_MIN_XFERP … #define NCR_700_MIN_PERIOD … #define script_patch_32(h, script, symbol, value) … #define script_patch_32_abs(h, script, symbol, value) … /* Used for patching the SCSI ID in the SELECT instruction */ #define script_patch_ID(h, script, symbol, value) … #define script_patch_16(h, script, symbol, value) … static inline __u8 NCR_700_readb(struct Scsi_Host *host, __u32 reg) { … } static inline __u32 NCR_700_readl(struct Scsi_Host *host, __u32 reg) { … } static inline void NCR_700_writeb(__u8 value, struct Scsi_Host *host, __u32 reg) { … } static inline void NCR_700_writel(__u32 value, struct Scsi_Host *host, __u32 reg) { … } #endif
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