| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Justin T. Gibbs | 1838 | 93.39% | 8 | 30.77% |
| Hannes Reinecke | 52 | 2.64% | 5 | 19.23% |
| Harvey Harrison | 31 | 1.58% | 1 | 3.85% |
| Al Viro | 13 | 0.66% | 2 | 7.69% |
| Christoph Hellwig | 12 | 0.61% | 2 | 7.69% |
| FUJITA Tomonori | 7 | 0.36% | 1 | 3.85% |
| James Bottomley | 6 | 0.30% | 2 | 7.69% |
| Denys Vlasenko | 4 | 0.20% | 1 | 3.85% |
| Steven Cole | 3 | 0.15% | 2 | 7.69% |
| Sergei Shtylyov | 1 | 0.05% | 1 | 3.85% |
| caihuoqing | 1 | 0.05% | 1 | 3.85% |
| Total | 1968 | 26 |
/* * Adaptec AIC79xx device driver for Linux. * * Copyright (c) 2000-2001 Adaptec Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.h#166 $ * */ #ifndef _AIC79XX_LINUX_H_ #define _AIC79XX_LINUX_H_ #include <linux/types.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/ioport.h> #include <linux/pci.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/slab.h> #include <asm/byteorder.h> #include <asm/io.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_eh.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_tcq.h> #include <scsi/scsi_transport.h> #include <scsi/scsi_transport_spi.h> /* Core SCSI definitions */ #define AIC_LIB_PREFIX ahd #include "cam.h" #include "queue.h" #include "scsi_message.h" #include "scsi_iu.h" #include "aiclib.h" /*********************************** Debugging ********************************/ #ifdef CONFIG_AIC79XX_DEBUG_ENABLE #ifdef CONFIG_AIC79XX_DEBUG_MASK #define AHD_DEBUG 1 #define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK #else /* * Compile in debugging code, but do not enable any printfs. */ #define AHD_DEBUG 1 #define AHD_DEBUG_OPTS 0 #endif /* No debugging code. */ #endif /********************************** Misc Macros *******************************/ #define powerof2(x) ((((x)-1)&(x))==0) /************************* Forward Declarations *******************************/ struct ahd_softc; typedef struct pci_dev *ahd_dev_softc_t; typedef struct scsi_cmnd *ahd_io_ctx_t; /******************************* Byte Order ***********************************/ #define ahd_htobe16(x) cpu_to_be16(x) #define ahd_htobe32(x) cpu_to_be32(x) #define ahd_htobe64(x) cpu_to_be64(x) #define ahd_htole16(x) cpu_to_le16(x) #define ahd_htole32(x) cpu_to_le32(x) #define ahd_htole64(x) cpu_to_le64(x) #define ahd_be16toh(x) be16_to_cpu(x) #define ahd_be32toh(x) be32_to_cpu(x) #define ahd_be64toh(x) be64_to_cpu(x) #define ahd_le16toh(x) le16_to_cpu(x) #define ahd_le32toh(x) le32_to_cpu(x) #define ahd_le64toh(x) le64_to_cpu(x) /************************* Configuration Data *********************************/ extern uint32_t aic79xx_allow_memio; extern struct scsi_host_template aic79xx_driver_template; /***************************** Bus Space/DMA **********************************/ typedef uint32_t bus_size_t; typedef enum { BUS_SPACE_MEMIO, BUS_SPACE_PIO } bus_space_tag_t; typedef union { u_long ioport; volatile uint8_t __iomem *maddr; } bus_space_handle_t; typedef struct bus_dma_segment { dma_addr_t ds_addr; bus_size_t ds_len; } bus_dma_segment_t; struct ahd_linux_dma_tag { bus_size_t alignment; bus_size_t boundary; bus_size_t maxsize; }; typedef struct ahd_linux_dma_tag* bus_dma_tag_t; typedef dma_addr_t bus_dmamap_t; typedef int bus_dma_filter_t(void*, dma_addr_t); typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); #define BUS_DMA_WAITOK 0x0 #define BUS_DMA_NOWAIT 0x1 #define BUS_DMA_ALLOCNOW 0x2 #define BUS_DMA_LOAD_SEGS 0x4 /* * Argument is an S/G list not * a single buffer. */ #define BUS_SPACE_MAXADDR 0xFFFFFFFF #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/, bus_size_t /*alignment*/, bus_size_t /*boundary*/, dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/, bus_dma_filter_t*/*filter*/, void */*filterarg*/, bus_size_t /*maxsize*/, int /*nsegments*/, bus_size_t /*maxsegsz*/, int /*flags*/, bus_dma_tag_t */*dma_tagp*/); void ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/); int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/, void** /*vaddr*/, int /*flags*/, bus_dmamap_t* /*mapp*/); void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/, void* /*vaddr*/, bus_dmamap_t /*map*/); void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/, bus_dmamap_t /*map*/); int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/, bus_dmamap_t /*map*/, void * /*buf*/, bus_size_t /*buflen*/, bus_dmamap_callback_t *, void */*callback_arg*/, int /*flags*/); int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t); /* * Operations performed by ahd_dmamap_sync(). */ #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ /* * XXX * ahd_dmamap_sync is only used on buffers allocated with * the dma_alloc_coherent() API. Although I'm not sure how * this works on architectures with a write buffer, Linux does * not have an API to sync "coherent" memory. Perhaps we need * to do an mb()? */ #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op) /********************************** Includes **********************************/ #ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT #define AIC_DEBUG_REGISTERS 1 #else #define AIC_DEBUG_REGISTERS 0 #endif #include "aic79xx.h" /***************************** SMP support ************************************/ #include <linux/spinlock.h> #define AIC79XX_DRIVER_VERSION "3.0" /*************************** Device Data Structures ***************************/ /* * A per probed device structure used to deal with some error recovery * scenarios that the Linux mid-layer code just doesn't know how to * handle. The structure allocated for a device only becomes persistent * after a successfully completed inquiry command to the target when * that inquiry data indicates a lun is present. */ typedef enum { AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ } ahd_linux_dev_flags; struct ahd_linux_device { TAILQ_ENTRY(ahd_linux_device) links; /* * The number of transactions currently * queued to the device. */ int active; /* * The currently allowed number of * transactions that can be queued to * the device. Must be signed for * conversion from tagged to untagged * mode where the device may have more * than one outstanding active transaction. */ int openings; /* * A positive count indicates that this * device's queue is halted. */ u_int qfrozen; /* * Cumulative command counter. */ u_long commands_issued; /* * The number of tagged transactions when * running at our current opening level * that have been successfully received by * this device since the last QUEUE FULL. */ u_int tag_success_count; #define AHD_TAG_SUCCESS_INTERVAL 50 ahd_linux_dev_flags flags; /* * Per device timer. */ struct timer_list timer; /* * The high limit for the tags variable. */ u_int maxtags; /* * The computed number of tags outstanding * at the time of the last QUEUE FULL event. */ u_int tags_on_last_queuefull; /* * How many times we have seen a queue full * with the same number of tags. This is used * to stop our adaptive queue depth algorithm * on devices with a fixed number of tags. */ u_int last_queuefull_same_count; #define AHD_LOCK_TAGS_COUNT 50 /* * How many transactions have been queued * without the device going idle. We use * this statistic to determine when to issue * an ordered tag to prevent transaction * starvation. This statistic is only updated * if the AHD_DEV_PERIODIC_OTAG flag is set * on this device. */ u_int commands_since_idle_or_otag; #define AHD_OTAG_THRESH 500 }; /********************* Definitions Required by the Core ***********************/ /* * Number of SG segments we require. So long as the S/G segments for * a particular transaction are allocated in a physically contiguous * manner and are allocated below 4GB, the number of S/G segments is * unrestricted. */ #define AHD_NSEG 128 /* * Per-SCB OSM storage. */ struct scb_platform_data { struct ahd_linux_device *dev; dma_addr_t buf_busaddr; uint32_t xfer_len; uint32_t sense_resid; /* Auto-Sense residual */ }; /* * Define a structure used for each host adapter. All members are * aligned on a boundary >= the size of the member to honor the * alignment restrictions of the various platforms supported by * this driver. */ struct ahd_platform_data { /* * Fields accessed from interrupt context. */ struct scsi_target *starget[AHD_NUM_TARGETS]; spinlock_t spin_lock; struct completion *eh_done; struct Scsi_Host *host; /* pointer to scsi host */ #define AHD_LINUX_NOIRQ ((uint32_t)~0) uint32_t irq; /* IRQ for this adapter */ uint32_t bios_address; resource_size_t mem_busaddr; /* Mem Base Addr */ }; void ahd_delay(long); /***************************** Low Level I/O **********************************/ uint8_t ahd_inb(struct ahd_softc * ahd, long port); void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); void ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val); void ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *, int count); void ahd_insb(struct ahd_softc * ahd, long port, uint8_t *, int count); /**************************** Initialization **********************************/ int ahd_linux_register_host(struct ahd_softc *, struct scsi_host_template *); /******************************** Locking *************************************/ static inline void ahd_lockinit(struct ahd_softc *ahd) { spin_lock_init(&ahd->platform_data->spin_lock); } static inline void ahd_lock(struct ahd_softc *ahd, unsigned long *flags) { spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); } static inline void ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) { spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); } /******************************* PCI Definitions ******************************/ /* * PCIM_xxx: mask to locate subfield in register * PCIR_xxx: config register offset * PCIC_xxx: device class * PCIS_xxx: device subclass * PCIP_xxx: device programming interface * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) * PCID_xxx: device ID */ #define PCIR_DEVVENDOR 0x00 #define PCIR_VENDOR 0x00 #define PCIR_DEVICE 0x02 #define PCIR_COMMAND 0x04 #define PCIM_CMD_PORTEN 0x0001 #define PCIM_CMD_MEMEN 0x0002 #define PCIM_CMD_BUSMASTEREN 0x0004 #define PCIM_CMD_MWRICEN 0x0010 #define PCIM_CMD_PERRESPEN 0x0040 #define PCIM_CMD_SERRESPEN 0x0100 #define PCIR_STATUS 0x06 #define PCIR_REVID 0x08 #define PCIR_PROGIF 0x09 #define PCIR_SUBCLASS 0x0a #define PCIR_CLASS 0x0b #define PCIR_CACHELNSZ 0x0c #define PCIR_LATTIMER 0x0d #define PCIR_HEADERTYPE 0x0e #define PCIM_MFDEV 0x80 #define PCIR_BIST 0x0f #define PCIR_CAP_PTR 0x34 /* config registers for header type 0 devices */ #define PCIR_MAPS 0x10 /****************************** PCI-X definitions *****************************/ #define PCIXR_COMMAND 0x96 #define PCIXR_DEVADDR 0x98 #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ #define PCIXR_STATUS 0x9A #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ typedef enum { AHD_POWER_STATE_D0, AHD_POWER_STATE_D1, AHD_POWER_STATE_D2, AHD_POWER_STATE_D3 } ahd_power_state; void ahd_power_state_change(struct ahd_softc *ahd, ahd_power_state new_state); /******************************* PCI Routines *********************************/ int ahd_linux_pci_init(void); void ahd_linux_pci_exit(void); int ahd_pci_map_registers(struct ahd_softc *ahd); int ahd_pci_map_int(struct ahd_softc *ahd); uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width); void ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width); static inline int ahd_get_pci_function(ahd_dev_softc_t); static inline int ahd_get_pci_function(ahd_dev_softc_t pci) { return (PCI_FUNC(pci->devfn)); } static inline int ahd_get_pci_slot(ahd_dev_softc_t); static inline int ahd_get_pci_slot(ahd_dev_softc_t pci) { return (PCI_SLOT(pci->devfn)); } static inline int ahd_get_pci_bus(ahd_dev_softc_t); static inline int ahd_get_pci_bus(ahd_dev_softc_t pci) { return (pci->bus->number); } static inline void ahd_flush_device_writes(struct ahd_softc *); static inline void ahd_flush_device_writes(struct ahd_softc *ahd) { /* XXX Is this sufficient for all architectures??? */ ahd_inb(ahd, INTSTAT); } /**************************** Proc FS Support *********************************/ int ahd_proc_write_seeprom(struct Scsi_Host *, char *, int); int ahd_linux_show_info(struct seq_file *,struct Scsi_Host *); /*********************** Transaction Access Wrappers **************************/ static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) { cmd->result &= ~(CAM_STATUS_MASK << 16); cmd->result |= status << 16; } static inline void ahd_set_transaction_status(struct scb *scb, uint32_t status) { ahd_cmd_set_transaction_status(scb->io_ctx,status); } static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) { cmd->result &= ~0xFFFF; cmd->result |= status; } static inline void ahd_set_scsi_status(struct scb *scb, uint32_t status) { ahd_cmd_set_scsi_status(scb->io_ctx, status); } static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) { return ((cmd->result >> 16) & CAM_STATUS_MASK); } static inline uint32_t ahd_get_transaction_status(struct scb *scb) { return (ahd_cmd_get_transaction_status(scb->io_ctx)); } static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) { return (cmd->result & 0xFFFF); } static inline uint32_t ahd_get_scsi_status(struct scb *scb) { return (ahd_cmd_get_scsi_status(scb->io_ctx)); } static inline void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) { /* * Nothing to do for linux as the incoming transaction * has no concept of tag/non tagged, etc. */ } static inline u_long ahd_get_transfer_length(struct scb *scb) { return (scb->platform_data->xfer_len); } static inline int ahd_get_transfer_dir(struct scb *scb) { return (scb->io_ctx->sc_data_direction); } static inline void ahd_set_residual(struct scb *scb, u_long resid) { scsi_set_resid(scb->io_ctx, resid); } static inline void ahd_set_sense_residual(struct scb *scb, u_long resid) { scb->platform_data->sense_resid = resid; } static inline u_long ahd_get_residual(struct scb *scb) { return scsi_get_resid(scb->io_ctx); } static inline u_long ahd_get_sense_residual(struct scb *scb) { return (scb->platform_data->sense_resid); } static inline int ahd_perform_autosense(struct scb *scb) { /* * We always perform autosense in Linux. * On other platforms this is set on a * per-transaction basis. */ return (1); } static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) { return (sizeof(struct scsi_sense_data)); } static inline void ahd_notify_xfer_settings_change(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) { /* Nothing to do here for linux */ } static inline void ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) { ahd->flags &= ~AHD_RESOURCE_SHORTAGE; } int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); void ahd_platform_free(struct ahd_softc *ahd); void ahd_platform_init(struct ahd_softc *ahd); void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); static inline void ahd_freeze_scb(struct scb *scb) { if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { scb->io_ctx->result |= CAM_DEV_QFRZN << 16; scb->platform_data->dev->qfrozen++; } } void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, struct ahd_devinfo *devinfo, ahd_queue_alg); int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, int lun, u_int tag, role_t role, uint32_t status); irqreturn_t ahd_linux_isr(int irq, void *dev_id); void ahd_done(struct ahd_softc*, struct scb*); void ahd_send_async(struct ahd_softc *, char channel, u_int target, u_int lun, ac_code); void ahd_print_path(struct ahd_softc *, struct scb *); #ifdef CONFIG_PCI #define AHD_PCI_CONFIG 1 #else #define AHD_PCI_CONFIG 0 #endif #define bootverbose aic79xx_verbose extern uint32_t aic79xx_verbose; #endif /* _AIC79XX_LINUX_H_ */
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