| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 599 | 51.50% | 8 | 16.33% |
| Finn Thain | 516 | 44.37% | 33 | 67.35% |
| Dave Jones | 16 | 1.38% | 1 | 2.04% |
| James Bottomley | 10 | 0.86% | 1 | 2.04% |
| Boaz Harrosh | 7 | 0.60% | 1 | 2.04% |
| Alan Cox | 6 | 0.52% | 1 | 2.04% |
| Andrew Morton | 4 | 0.34% | 1 | 2.04% |
| David Howells | 3 | 0.26% | 1 | 2.04% |
| Ondrej Zary | 1 | 0.09% | 1 | 2.04% |
| Greg Kroah-Hartman | 1 | 0.09% | 1 | 2.04% |
| Total | 1163 | 49 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * NCR 5380 defines * * Copyright 1993, Drew Eckhardt * Visionary Computing * (Unix consulting and custom programming) * drew@colorado.edu * +1 (303) 666-5836 * * For more information, please consult * * NCR 5380 Family * SCSI Protocol Controller * Databook * NCR Microelectronics * 1635 Aeroplaza Drive * Colorado Springs, CO 80916 * 1+ (719) 578-3400 * 1+ (800) 334-5454 */ #ifndef NCR5380_H #define NCR5380_H #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/list.h> #include <linux/workqueue.h> #include <scsi/scsi_dbg.h> #include <scsi/scsi_eh.h> #include <scsi/scsi_transport_spi.h> #define NDEBUG_ARBITRATION 0x1 #define NDEBUG_AUTOSENSE 0x2 #define NDEBUG_DMA 0x4 #define NDEBUG_HANDSHAKE 0x8 #define NDEBUG_INFORMATION 0x10 #define NDEBUG_INIT 0x20 #define NDEBUG_INTR 0x40 #define NDEBUG_LINKED 0x80 #define NDEBUG_MAIN 0x100 #define NDEBUG_NO_DATAOUT 0x200 #define NDEBUG_NO_WRITE 0x400 #define NDEBUG_PIO 0x800 #define NDEBUG_PSEUDO_DMA 0x1000 #define NDEBUG_QUEUES 0x2000 #define NDEBUG_RESELECTION 0x4000 #define NDEBUG_SELECTION 0x8000 #define NDEBUG_USLEEP 0x10000 #define NDEBUG_LAST_BYTE_SENT 0x20000 #define NDEBUG_RESTART_SELECT 0x40000 #define NDEBUG_EXTENDED 0x80000 #define NDEBUG_C400_PREAD 0x100000 #define NDEBUG_C400_PWRITE 0x200000 #define NDEBUG_LISTS 0x400000 #define NDEBUG_ABORT 0x800000 #define NDEBUG_TAGS 0x1000000 #define NDEBUG_MERGING 0x2000000 #define NDEBUG_ANY 0xFFFFFFFFUL /* * The contents of the OUTPUT DATA register are asserted on the bus when * either arbitration is occurring or the phase-indicating signals ( * IO, CD, MSG) in the TARGET COMMAND register and the ASSERT DATA * bit in the INITIATOR COMMAND register is set. */ #define OUTPUT_DATA_REG 0 /* wo DATA lines on SCSI bus */ #define CURRENT_SCSI_DATA_REG 0 /* ro same */ #define INITIATOR_COMMAND_REG 1 /* rw */ #define ICR_ASSERT_RST 0x80 /* rw Set to assert RST */ #define ICR_ARBITRATION_PROGRESS 0x40 /* ro Indicates arbitration complete */ #define ICR_TRI_STATE 0x40 /* wo Set to tri-state drivers */ #define ICR_ARBITRATION_LOST 0x20 /* ro Indicates arbitration lost */ #define ICR_DIFF_ENABLE 0x20 /* wo Set to enable diff. drivers */ #define ICR_ASSERT_ACK 0x10 /* rw ini Set to assert ACK */ #define ICR_ASSERT_BSY 0x08 /* rw Set to assert BSY */ #define ICR_ASSERT_SEL 0x04 /* rw Set to assert SEL */ #define ICR_ASSERT_ATN 0x02 /* rw Set to assert ATN */ #define ICR_ASSERT_DATA 0x01 /* rw SCSI_DATA_REG is asserted */ #define ICR_BASE 0 #define MODE_REG 2 /* * Note : BLOCK_DMA code will keep DRQ asserted for the duration of the * transfer, causing the chip to hog the bus. You probably don't want * this. */ #define MR_BLOCK_DMA_MODE 0x80 /* rw block mode DMA */ #define MR_TARGET 0x40 /* rw target mode */ #define MR_ENABLE_PAR_CHECK 0x20 /* rw enable parity checking */ #define MR_ENABLE_PAR_INTR 0x10 /* rw enable bad parity interrupt */ #define MR_ENABLE_EOP_INTR 0x08 /* rw enable eop interrupt */ #define MR_MONITOR_BSY 0x04 /* rw enable int on unexpected bsy fail */ #define MR_DMA_MODE 0x02 /* rw DMA / pseudo DMA mode */ #define MR_ARBITRATE 0x01 /* rw start arbitration */ #define MR_BASE 0 #define TARGET_COMMAND_REG 3 #define TCR_LAST_BYTE_SENT 0x80 /* ro DMA done */ #define TCR_ASSERT_REQ 0x08 /* tgt rw assert REQ */ #define TCR_ASSERT_MSG 0x04 /* tgt rw assert MSG */ #define TCR_ASSERT_CD 0x02 /* tgt rw assert CD */ #define TCR_ASSERT_IO 0x01 /* tgt rw assert IO */ #define STATUS_REG 4 /* ro */ /* * Note : a set bit indicates an active signal, driven by us or another * device. */ #define SR_RST 0x80 #define SR_BSY 0x40 #define SR_REQ 0x20 #define SR_MSG 0x10 #define SR_CD 0x08 #define SR_IO 0x04 #define SR_SEL 0x02 #define SR_DBP 0x01 /* * Setting a bit in this register will cause an interrupt to be generated when * BSY is false and SEL true and this bit is asserted on the bus. */ #define SELECT_ENABLE_REG 4 /* wo */ #define BUS_AND_STATUS_REG 5 /* ro */ #define BASR_END_DMA_TRANSFER 0x80 /* ro set on end of transfer */ #define BASR_DRQ 0x40 /* ro mirror of DRQ pin */ #define BASR_PARITY_ERROR 0x20 /* ro parity error detected */ #define BASR_IRQ 0x10 /* ro mirror of IRQ pin */ #define BASR_PHASE_MATCH 0x08 /* ro Set when MSG CD IO match TCR */ #define BASR_BUSY_ERROR 0x04 /* ro Unexpected change to inactive state */ #define BASR_ATN 0x02 /* ro BUS status */ #define BASR_ACK 0x01 /* ro BUS status */ /* Write any value to this register to start a DMA send */ #define START_DMA_SEND_REG 5 /* wo */ /* * Used in DMA transfer mode, data is latched from the SCSI bus on * the falling edge of REQ (ini) or ACK (tgt) */ #define INPUT_DATA_REG 6 /* ro */ /* Write any value to this register to start a DMA receive */ #define START_DMA_TARGET_RECEIVE_REG 6 /* wo */ /* Read this register to clear interrupt conditions */ #define RESET_PARITY_INTERRUPT_REG 7 /* ro */ /* Write any value to this register to start an ini mode DMA receive */ #define START_DMA_INITIATOR_RECEIVE_REG 7 /* wo */ /* NCR 53C400(A) Control Status Register bits: */ #define CSR_RESET 0x80 /* wo Resets 53c400 */ #define CSR_53C80_REG 0x80 /* ro 5380 registers busy */ #define CSR_TRANS_DIR 0x40 /* rw Data transfer direction */ #define CSR_SCSI_BUFF_INTR 0x20 /* rw Enable int on transfer ready */ #define CSR_53C80_INTR 0x10 /* rw Enable 53c80 interrupts */ #define CSR_SHARED_INTR 0x08 /* rw Interrupt sharing */ #define CSR_HOST_BUF_NOT_RDY 0x04 /* ro Is Host buffer ready */ #define CSR_SCSI_BUF_RDY 0x02 /* ro SCSI buffer read */ #define CSR_GATED_53C80_IRQ 0x01 /* ro Last block xferred */ #define CSR_BASE CSR_53C80_INTR /* Note : PHASE_* macros are based on the values of the STATUS register */ #define PHASE_MASK (SR_MSG | SR_CD | SR_IO) #define PHASE_DATAOUT 0 #define PHASE_DATAIN SR_IO #define PHASE_CMDOUT SR_CD #define PHASE_STATIN (SR_CD | SR_IO) #define PHASE_MSGOUT (SR_MSG | SR_CD) #define PHASE_MSGIN (SR_MSG | SR_CD | SR_IO) #define PHASE_UNKNOWN 0xff /* * Convert status register phase to something we can use to set phase in * the target register so we can get phase mismatch interrupts on DMA * transfers. */ #define PHASE_SR_TO_TCR(phase) ((phase) >> 2) #ifndef NO_IRQ #define NO_IRQ 0 #endif #define FLAG_DMA_FIXUP 1 /* Use DMA errata workarounds */ #define FLAG_NO_PSEUDO_DMA 8 /* Inhibit DMA */ #define FLAG_LATE_DMA_SETUP 32 /* Setup NCR before DMA H/W */ #define FLAG_TOSHIBA_DELAY 128 /* Allow for borken CD-ROMs */ struct NCR5380_hostdata { NCR5380_implementation_fields; /* Board-specific data */ u8 __iomem *io; /* Remapped 5380 address */ u8 __iomem *pdma_io; /* Remapped PDMA address */ unsigned long poll_loops; /* Register polling limit */ spinlock_t lock; /* Protects this struct */ struct scsi_cmnd *connected; /* Currently connected cmnd */ struct list_head disconnected; /* Waiting for reconnect */ struct Scsi_Host *host; /* SCSI host backpointer */ struct workqueue_struct *work_q; /* SCSI host work queue */ struct work_struct main_task; /* Work item for main loop */ int flags; /* Board-specific quirks */ int dma_len; /* Requested length of DMA */ int read_overruns; /* Transfer size reduction for DMA erratum */ unsigned long io_port; /* Device IO port */ unsigned long base; /* Device base address */ struct list_head unissued; /* Waiting to be issued */ struct scsi_cmnd *selecting; /* Cmnd to be connected */ struct list_head autosense; /* Priority cmnd queue */ struct scsi_cmnd *sensing; /* Cmnd needing autosense */ struct scsi_eh_save ses; /* Cmnd state saved for EH */ unsigned char busy[8]; /* Index = target, bit = lun */ unsigned char id_mask; /* 1 << Host ID */ unsigned char id_higher_mask; /* All bits above id_mask */ unsigned char last_message; /* Last Message Out */ unsigned long region_size; /* Size of address/port range */ char info[168]; /* Host banner message */ }; struct NCR5380_cmd { struct list_head list; }; #define NCR5380_CMD_SIZE (sizeof(struct NCR5380_cmd)) #define NCR5380_PIO_CHUNK_SIZE 256 /* Time limit (ms) to poll registers when IRQs are disabled, e.g. during PDMA */ #define NCR5380_REG_POLL_TIME 15 static inline struct scsi_cmnd *NCR5380_to_scmd(struct NCR5380_cmd *ncmd_ptr) { return ((struct scsi_cmnd *)ncmd_ptr) - 1; } #ifndef NDEBUG #define NDEBUG (0) #endif #define dprintk(flg, fmt, ...) \ do { if ((NDEBUG) & (flg)) \ printk(KERN_DEBUG fmt, ## __VA_ARGS__); } while (0) #define dsprintk(flg, host, fmt, ...) \ do { if ((NDEBUG) & (flg)) \ shost_printk(KERN_DEBUG, host, fmt, ## __VA_ARGS__); \ } while (0) #if NDEBUG #define NCR5380_dprint(flg, arg) \ do { if ((NDEBUG) & (flg)) NCR5380_print(arg); } while (0) #define NCR5380_dprint_phase(flg, arg) \ do { if ((NDEBUG) & (flg)) NCR5380_print_phase(arg); } while (0) static void NCR5380_print_phase(struct Scsi_Host *instance); static void NCR5380_print(struct Scsi_Host *instance); #else #define NCR5380_dprint(flg, arg) do {} while (0) #define NCR5380_dprint_phase(flg, arg) do {} while (0) #endif static int NCR5380_init(struct Scsi_Host *instance, int flags); static int NCR5380_maybe_reset_bus(struct Scsi_Host *); static void NCR5380_exit(struct Scsi_Host *instance); static void NCR5380_information_transfer(struct Scsi_Host *instance); static irqreturn_t NCR5380_intr(int irq, void *dev_id); static void NCR5380_main(struct work_struct *work); static const char *NCR5380_info(struct Scsi_Host *instance); static void NCR5380_reselect(struct Scsi_Host *instance); static bool NCR5380_select(struct Scsi_Host *, struct scsi_cmnd *); static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data); static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data); static int NCR5380_poll_politely2(struct NCR5380_hostdata *, unsigned int, u8, u8, unsigned int, u8, u8, unsigned long); static inline int NCR5380_poll_politely(struct NCR5380_hostdata *hostdata, unsigned int reg, u8 bit, u8 val, unsigned long wait) { if ((NCR5380_read(reg) & bit) == val) return 0; return NCR5380_poll_politely2(hostdata, reg, bit, val, reg, bit, val, wait); } static int NCR5380_dma_xfer_len(struct NCR5380_hostdata *, struct scsi_cmnd *); static int NCR5380_dma_send_setup(struct NCR5380_hostdata *, unsigned char *, int); static int NCR5380_dma_recv_setup(struct NCR5380_hostdata *, unsigned char *, int); static int NCR5380_dma_residual(struct NCR5380_hostdata *); static inline int NCR5380_dma_xfer_none(struct NCR5380_hostdata *hostdata, struct scsi_cmnd *cmd) { return 0; } static inline int NCR5380_dma_setup_none(struct NCR5380_hostdata *hostdata, unsigned char *data, int count) { return 0; } static inline int NCR5380_dma_residual_none(struct NCR5380_hostdata *hostdata) { return 0; } #endif /* NCR5380_H */
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