| /* |
| * Adaptec AIC79xx device driver for Linux. |
| * |
| * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $ |
| * |
| * -------------------------------------------------------------------------- |
| * Copyright (c) 1994-2000 Justin T. Gibbs. |
| * Copyright (c) 1997-1999 Doug Ledford |
| * Copyright (c) 2000-2003 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. |
| */ |
| |
| #include "aic79xx_osm.h" |
| #include "aic79xx_inline.h" |
| #include <scsi/scsicam.h> |
| |
| static struct scsi_transport_template *ahd_linux_transport_template = NULL; |
| |
| #include <linux/init.h> /* __setup */ |
| #include <linux/mm.h> /* For fetching system memory size */ |
| #include <linux/blkdev.h> /* For block_size() */ |
| #include <linux/delay.h> /* For ssleep/msleep */ |
| #include <linux/device.h> |
| |
| /* |
| * Bucket size for counting good commands in between bad ones. |
| */ |
| #define AHD_LINUX_ERR_THRESH 1000 |
| |
| /* |
| * Set this to the delay in seconds after SCSI bus reset. |
| * Note, we honor this only for the initial bus reset. |
| * The scsi error recovery code performs its own bus settle |
| * delay handling for error recovery actions. |
| */ |
| #ifdef CONFIG_AIC79XX_RESET_DELAY_MS |
| #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS |
| #else |
| #define AIC79XX_RESET_DELAY 5000 |
| #endif |
| |
| /* |
| * To change the default number of tagged transactions allowed per-device, |
| * add a line to the lilo.conf file like: |
| * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}" |
| * which will result in the first four devices on the first two |
| * controllers being set to a tagged queue depth of 32. |
| * |
| * The tag_commands is an array of 16 to allow for wide and twin adapters. |
| * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15 |
| * for channel 1. |
| */ |
| typedef struct { |
| uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */ |
| } adapter_tag_info_t; |
| |
| /* |
| * Modify this as you see fit for your system. |
| * |
| * 0 tagged queuing disabled |
| * 1 <= n <= 253 n == max tags ever dispatched. |
| * |
| * The driver will throttle the number of commands dispatched to a |
| * device if it returns queue full. For devices with a fixed maximum |
| * queue depth, the driver will eventually determine this depth and |
| * lock it in (a console message is printed to indicate that a lock |
| * has occurred). On some devices, queue full is returned for a temporary |
| * resource shortage. These devices will return queue full at varying |
| * depths. The driver will throttle back when the queue fulls occur and |
| * attempt to slowly increase the depth over time as the device recovers |
| * from the resource shortage. |
| * |
| * In this example, the first line will disable tagged queueing for all |
| * the devices on the first probed aic79xx adapter. |
| * |
| * The second line enables tagged queueing with 4 commands/LUN for IDs |
| * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the |
| * driver to attempt to use up to 64 tags for ID 1. |
| * |
| * The third line is the same as the first line. |
| * |
| * The fourth line disables tagged queueing for devices 0 and 3. It |
| * enables tagged queueing for the other IDs, with 16 commands/LUN |
| * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for |
| * IDs 2, 5-7, and 9-15. |
| */ |
| |
| /* |
| * NOTE: The below structure is for reference only, the actual structure |
| * to modify in order to change things is just below this comment block. |
| adapter_tag_info_t aic79xx_tag_info[] = |
| { |
| {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, |
| {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}}, |
| {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, |
| {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}} |
| }; |
| */ |
| |
| #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE |
| #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE |
| #else |
| #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE |
| #endif |
| |
| #define AIC79XX_CONFIGED_TAG_COMMANDS { \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ |
| AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \ |
| } |
| |
| /* |
| * By default, use the number of commands specified by |
| * the users kernel configuration. |
| */ |
| static adapter_tag_info_t aic79xx_tag_info[] = |
| { |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS}, |
| {AIC79XX_CONFIGED_TAG_COMMANDS} |
| }; |
| |
| /* |
| * The I/O cell on the chip is very configurable in respect to its analog |
| * characteristics. Set the defaults here; they can be overriden with |
| * the proper insmod parameters. |
| */ |
| struct ahd_linux_iocell_opts |
| { |
| uint8_t precomp; |
| uint8_t slewrate; |
| uint8_t amplitude; |
| }; |
| #define AIC79XX_DEFAULT_PRECOMP 0xFF |
| #define AIC79XX_DEFAULT_SLEWRATE 0xFF |
| #define AIC79XX_DEFAULT_AMPLITUDE 0xFF |
| #define AIC79XX_DEFAULT_IOOPTS \ |
| { \ |
| AIC79XX_DEFAULT_PRECOMP, \ |
| AIC79XX_DEFAULT_SLEWRATE, \ |
| AIC79XX_DEFAULT_AMPLITUDE \ |
| } |
| #define AIC79XX_PRECOMP_INDEX 0 |
| #define AIC79XX_SLEWRATE_INDEX 1 |
| #define AIC79XX_AMPLITUDE_INDEX 2 |
| static struct ahd_linux_iocell_opts aic79xx_iocell_info[] = |
| { |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS, |
| AIC79XX_DEFAULT_IOOPTS |
| }; |
| |
| /* |
| * There should be a specific return value for this in scsi.h, but |
| * it seems that most drivers ignore it. |
| */ |
| #define DID_UNDERFLOW DID_ERROR |
| |
| void |
| ahd_print_path(struct ahd_softc *ahd, struct scb *scb) |
| { |
| printk("(scsi%d:%c:%d:%d): ", |
| ahd->platform_data->host->host_no, |
| scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X', |
| scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1, |
| scb != NULL ? SCB_GET_LUN(scb) : -1); |
| } |
| |
| /* |
| * XXX - these options apply unilaterally to _all_ adapters |
| * cards in the system. This should be fixed. Exceptions to this |
| * rule are noted in the comments. |
| */ |
| |
| /* |
| * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This |
| * has no effect on any later resets that might occur due to things like |
| * SCSI bus timeouts. |
| */ |
| static uint32_t aic79xx_no_reset; |
| |
| /* |
| * Certain PCI motherboards will scan PCI devices from highest to lowest, |
| * others scan from lowest to highest, and they tend to do all kinds of |
| * strange things when they come into contact with PCI bridge chips. The |
| * net result of all this is that the PCI card that is actually used to boot |
| * the machine is very hard to detect. Most motherboards go from lowest |
| * PCI slot number to highest, and the first SCSI controller found is the |
| * one you boot from. The only exceptions to this are when a controller |
| * has its BIOS disabled. So, we by default sort all of our SCSI controllers |
| * from lowest PCI slot number to highest PCI slot number. We also force |
| * all controllers with their BIOS disabled to the end of the list. This |
| * works on *almost* all computers. Where it doesn't work, we have this |
| * option. Setting this option to non-0 will reverse the order of the sort |
| * to highest first, then lowest, but will still leave cards with their BIOS |
| * disabled at the very end. That should fix everyone up unless there are |
| * really strange cirumstances. |
| */ |
| static uint32_t aic79xx_reverse_scan; |
| |
| /* |
| * Should we force EXTENDED translation on a controller. |
| * 0 == Use whatever is in the SEEPROM or default to off |
| * 1 == Use whatever is in the SEEPROM or default to on |
| */ |
| static uint32_t aic79xx_extended; |
| |
| /* |
| * PCI bus parity checking of the Adaptec controllers. This is somewhat |
| * dubious at best. To my knowledge, this option has never actually |
| * solved a PCI parity problem, but on certain machines with broken PCI |
| * chipset configurations, it can generate tons of false error messages. |
| * It's included in the driver for completeness. |
| * 0 = Shut off PCI parity check |
| * non-0 = Enable PCI parity check |
| * |
| * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this |
| * variable to -1 you would actually want to simply pass the variable |
| * name without a number. That will invert the 0 which will result in |
| * -1. |
| */ |
| static uint32_t aic79xx_pci_parity = ~0; |
| |
| /* |
| * There are lots of broken chipsets in the world. Some of them will |
| * violate the PCI spec when we issue byte sized memory writes to our |
| * controller. I/O mapped register access, if allowed by the given |
| * platform, will work in almost all cases. |
| */ |
| uint32_t aic79xx_allow_memio = ~0; |
| |
| /* |
| * So that we can set how long each device is given as a selection timeout. |
| * The table of values goes like this: |
| * 0 - 256ms |
| * 1 - 128ms |
| * 2 - 64ms |
| * 3 - 32ms |
| * We default to 256ms because some older devices need a longer time |
| * to respond to initial selection. |
| */ |
| static uint32_t aic79xx_seltime; |
| |
| /* |
| * Certain devices do not perform any aging on commands. Should the |
| * device be saturated by commands in one portion of the disk, it is |
| * possible for transactions on far away sectors to never be serviced. |
| * To handle these devices, we can periodically send an ordered tag to |
| * force all outstanding transactions to be serviced prior to a new |
| * transaction. |
| */ |
| uint32_t aic79xx_periodic_otag; |
| |
| /* Some storage boxes are using an LSI chip which has a bug making it |
| * impossible to use aic79xx Rev B chip in 320 speeds. The following |
| * storage boxes have been reported to be buggy: |
| * EonStor 3U 16-Bay: U16U-G3A3 |
| * EonStor 2U 12-Bay: U12U-G3A3 |
| * SentinelRAID: 2500F R5 / R6 |
| * SentinelRAID: 2500F R1 |
| * SentinelRAID: 2500F/1500F |
| * SentinelRAID: 150F |
| * |
| * To get around this LSI bug, you can set your board to 160 mode |
| * or you can enable the SLOWCRC bit. |
| */ |
| uint32_t aic79xx_slowcrc; |
| |
| /* |
| * Module information and settable options. |
| */ |
| static char *aic79xx = NULL; |
| |
| MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>"); |
| MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver"); |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_VERSION(AIC79XX_DRIVER_VERSION); |
| module_param(aic79xx, charp, 0444); |
| MODULE_PARM_DESC(aic79xx, |
| "period delimited, options string.\n" |
| " verbose Enable verbose/diagnostic logging\n" |
| " allow_memio Allow device registers to be memory mapped\n" |
| " debug Bitmask of debug values to enable\n" |
| " no_reset Supress initial bus resets\n" |
| " extended Enable extended geometry on all controllers\n" |
| " periodic_otag Send an ordered tagged transaction\n" |
| " periodically to prevent tag starvation.\n" |
| " This may be required by some older disk\n" |
| " or drives/RAID arrays.\n" |
| " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n" |
| " tag_info:<tag_str> Set per-target tag depth\n" |
| " global_tag_depth:<int> Global tag depth for all targets on all buses\n" |
| " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n" |
| " precomp:<pcomp_list> Set the signal precompensation (0-7).\n" |
| " amplitude:<int> Set the signal amplitude (0-7).\n" |
| " seltime:<int> Selection Timeout:\n" |
| " (0/256ms,1/128ms,2/64ms,3/32ms)\n" |
| " slowcrc Turn on the SLOWCRC bit (Rev B only)\n" |
| "\n" |
| " Sample /etc/modprobe.conf line:\n" |
| " Enable verbose logging\n" |
| " Set tag depth on Controller 2/Target 2 to 10 tags\n" |
| " Shorten the selection timeout to 128ms\n" |
| "\n" |
| " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n" |
| "\n"); |
| |
| static void ahd_linux_handle_scsi_status(struct ahd_softc *, |
| struct scsi_device *, |
| struct scb *); |
| static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, |
| struct scsi_cmnd *cmd); |
| static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd); |
| static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd); |
| static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd, |
| struct ahd_devinfo *devinfo); |
| static void ahd_linux_device_queue_depth(struct scsi_device *); |
| static int ahd_linux_run_command(struct ahd_softc*, |
| struct ahd_linux_device *, |
| struct scsi_cmnd *); |
| static void ahd_linux_setup_tag_info_global(char *p); |
| static int aic79xx_setup(char *c); |
| |
| static int ahd_linux_unit; |
| |
| |
| /****************************** Inlines ***************************************/ |
| static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); |
| |
| static __inline void |
| ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb) |
| { |
| struct scsi_cmnd *cmd; |
| int direction; |
| |
| cmd = scb->io_ctx; |
| direction = cmd->sc_data_direction; |
| ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE); |
| if (cmd->use_sg != 0) { |
| struct scatterlist *sg; |
| |
| sg = (struct scatterlist *)cmd->request_buffer; |
| pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction); |
| } else if (cmd->request_bufflen != 0) { |
| pci_unmap_single(ahd->dev_softc, |
| scb->platform_data->buf_busaddr, |
| cmd->request_bufflen, direction); |
| } |
| } |
| |
| /******************************** Macros **************************************/ |
| #define BUILD_SCSIID(ahd, cmd) \ |
| (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id) |
| |
| /* |
| * Return a string describing the driver. |
| */ |
| static const char * |
| ahd_linux_info(struct Scsi_Host *host) |
| { |
| static char buffer[512]; |
| char ahd_info[256]; |
| char *bp; |
| struct ahd_softc *ahd; |
| |
| bp = &buffer[0]; |
| ahd = *(struct ahd_softc **)host->hostdata; |
| memset(bp, 0, sizeof(buffer)); |
| strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev "); |
| strcat(bp, AIC79XX_DRIVER_VERSION); |
| strcat(bp, "\n"); |
| strcat(bp, " <"); |
| strcat(bp, ahd->description); |
| strcat(bp, ">\n"); |
| strcat(bp, " "); |
| ahd_controller_info(ahd, ahd_info); |
| strcat(bp, ahd_info); |
| strcat(bp, "\n"); |
| |
| return (bp); |
| } |
| |
| /* |
| * Queue an SCB to the controller. |
| */ |
| static int |
| ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) |
| { |
| struct ahd_softc *ahd; |
| struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device); |
| int rtn = SCSI_MLQUEUE_HOST_BUSY; |
| |
| ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
| |
| cmd->scsi_done = scsi_done; |
| cmd->result = CAM_REQ_INPROG << 16; |
| rtn = ahd_linux_run_command(ahd, dev, cmd); |
| |
| return rtn; |
| } |
| |
| static inline struct scsi_target ** |
| ahd_linux_target_in_softc(struct scsi_target *starget) |
| { |
| struct ahd_softc *ahd = |
| *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); |
| unsigned int target_offset; |
| |
| target_offset = starget->id; |
| if (starget->channel != 0) |
| target_offset += 8; |
| |
| return &ahd->platform_data->starget[target_offset]; |
| } |
| |
| static int |
| ahd_linux_target_alloc(struct scsi_target *starget) |
| { |
| struct ahd_softc *ahd = |
| *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); |
| struct seeprom_config *sc = ahd->seep_config; |
| unsigned long flags; |
| struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); |
| struct ahd_linux_target *targ = scsi_transport_target_data(starget); |
| struct ahd_devinfo devinfo; |
| struct ahd_initiator_tinfo *tinfo; |
| struct ahd_tmode_tstate *tstate; |
| char channel = starget->channel + 'A'; |
| |
| ahd_lock(ahd, &flags); |
| |
| BUG_ON(*ahd_targp != NULL); |
| |
| *ahd_targp = starget; |
| memset(targ, 0, sizeof(*targ)); |
| |
| if (sc) { |
| int flags = sc->device_flags[starget->id]; |
| |
| tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
| starget->id, &tstate); |
| |
| if ((flags & CFPACKETIZED) == 0) { |
| /* Do not negotiate packetized transfers */ |
| spi_rd_strm(starget) = 0; |
| spi_pcomp_en(starget) = 0; |
| spi_rti(starget) = 0; |
| spi_wr_flow(starget) = 0; |
| spi_hold_mcs(starget) = 0; |
| } else { |
| if ((ahd->features & AHD_RTI) == 0) |
| spi_rti(starget) = 0; |
| } |
| |
| if ((flags & CFQAS) == 0) |
| spi_qas(starget) = 0; |
| |
| /* Transinfo values have been set to BIOS settings */ |
| spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0; |
| spi_min_period(starget) = tinfo->user.period; |
| spi_max_offset(starget) = tinfo->user.offset; |
| } |
| |
| tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, |
| starget->id, &tstate); |
| ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id, |
| CAM_LUN_WILDCARD, channel, |
| ROLE_INITIATOR); |
| ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, |
| AHD_TRANS_GOAL, /*paused*/FALSE); |
| ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, |
| AHD_TRANS_GOAL, /*paused*/FALSE); |
| ahd_unlock(ahd, &flags); |
| |
| return 0; |
| } |
| |
| static void |
| ahd_linux_target_destroy(struct scsi_target *starget) |
| { |
| struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); |
| |
| *ahd_targp = NULL; |
| } |
| |
| static int |
| ahd_linux_slave_alloc(struct scsi_device *sdev) |
| { |
| struct ahd_softc *ahd = |
| *((struct ahd_softc **)sdev->host->hostdata); |
| struct scsi_target *starget = sdev->sdev_target; |
| struct ahd_linux_target *targ = scsi_transport_target_data(starget); |
| struct ahd_linux_device *dev; |
| |
| if (bootverbose) |
| printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id); |
| |
| BUG_ON(targ->sdev[sdev->lun] != NULL); |
| |
| dev = scsi_transport_device_data(sdev); |
| memset(dev, 0, sizeof(*dev)); |
| |
| /* |
| * We start out life using untagged |
| * transactions of which we allow one. |
| */ |
| dev->openings = 1; |
| |
| /* |
| * Set maxtags to 0. This will be changed if we |
| * later determine that we are dealing with |
| * a tagged queuing capable device. |
| */ |
| dev->maxtags = 0; |
| |
| targ->sdev[sdev->lun] = sdev; |
| |
| return (0); |
| } |
| |
| static int |
| ahd_linux_slave_configure(struct scsi_device *sdev) |
| { |
| struct ahd_softc *ahd; |
| |
| ahd = *((struct ahd_softc **)sdev->host->hostdata); |
| if (bootverbose) |
| sdev_printk(KERN_INFO, sdev, "Slave Configure\n"); |
| |
| ahd_linux_device_queue_depth(sdev); |
| |
| /* Initial Domain Validation */ |
| if (!spi_initial_dv(sdev->sdev_target)) |
| spi_dv_device(sdev); |
| |
| return 0; |
| } |
| |
| static void |
| ahd_linux_slave_destroy(struct scsi_device *sdev) |
| { |
| struct ahd_softc *ahd; |
| struct ahd_linux_device *dev = scsi_transport_device_data(sdev); |
| struct ahd_linux_target *targ = scsi_transport_target_data(sdev->sdev_target); |
| |
| ahd = *((struct ahd_softc **)sdev->host->hostdata); |
| if (bootverbose) |
| printf("%s: Slave Destroy %d\n", ahd_name(ahd), sdev->id); |
| |
| BUG_ON(dev->active); |
| |
| targ->sdev[sdev->lun] = NULL; |
| |
| } |
| |
| #if defined(__i386__) |
| /* |
| * Return the disk geometry for the given SCSI device. |
| */ |
| static int |
| ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
| sector_t capacity, int geom[]) |
| { |
| uint8_t *bh; |
| int heads; |
| int sectors; |
| int cylinders; |
| int ret; |
| int extended; |
| struct ahd_softc *ahd; |
| |
| ahd = *((struct ahd_softc **)sdev->host->hostdata); |
| |
| bh = scsi_bios_ptable(bdev); |
| if (bh) { |
| ret = scsi_partsize(bh, capacity, |
| &geom[2], &geom[0], &geom[1]); |
| kfree(bh); |
| if (ret != -1) |
| return (ret); |
| } |
| heads = 64; |
| sectors = 32; |
| cylinders = aic_sector_div(capacity, heads, sectors); |
| |
| if (aic79xx_extended != 0) |
| extended = 1; |
| else |
| extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0; |
| if (extended && cylinders >= 1024) { |
| heads = 255; |
| sectors = 63; |
| cylinders = aic_sector_div(capacity, heads, sectors); |
| } |
| geom[0] = heads; |
| geom[1] = sectors; |
| geom[2] = cylinders; |
| return (0); |
| } |
| #endif |
| |
| /* |
| * Abort the current SCSI command(s). |
| */ |
| static int |
| ahd_linux_abort(struct scsi_cmnd *cmd) |
| { |
| int error; |
| |
| error = ahd_linux_queue_abort_cmd(cmd); |
| |
| return error; |
| } |
| |
| /* |
| * Attempt to send a target reset message to the device that timed out. |
| */ |
| static int |
| ahd_linux_dev_reset(struct scsi_cmnd *cmd) |
| { |
| struct ahd_softc *ahd; |
| struct ahd_linux_device *dev; |
| struct scb *reset_scb; |
| u_int cdb_byte; |
| int retval = SUCCESS; |
| int paused; |
| int wait; |
| struct ahd_initiator_tinfo *tinfo; |
| struct ahd_tmode_tstate *tstate; |
| unsigned long flags; |
| DECLARE_COMPLETION(done); |
| |
| reset_scb = NULL; |
| paused = FALSE; |
| wait = FALSE; |
| ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
| |
| scmd_printk(KERN_INFO, cmd, |
| "Attempting to queue a TARGET RESET message:"); |
| |
| printf("CDB:"); |
| for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) |
| printf(" 0x%x", cmd->cmnd[cdb_byte]); |
| printf("\n"); |
| |
| /* |
| * Determine if we currently own this command. |
| */ |
| dev = scsi_transport_device_data(cmd->device); |
| |
| if (dev == NULL) { |
| /* |
| * No target device for this command exists, |
| * so we must not still own the command. |
| */ |
| scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); |
| return SUCCESS; |
| } |
| |
| /* |
| * Generate us a new SCB |
| */ |
| reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX); |
| if (!reset_scb) { |
| scmd_printk(KERN_INFO, cmd, "No SCB available\n"); |
| return FAILED; |
| } |
| |
| tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
| cmd->device->id, &tstate); |
| reset_scb->io_ctx = cmd; |
| reset_scb->platform_data->dev = dev; |
| reset_scb->sg_count = 0; |
| ahd_set_residual(reset_scb, 0); |
| ahd_set_sense_residual(reset_scb, 0); |
| reset_scb->platform_data->xfer_len = 0; |
| reset_scb->hscb->control = 0; |
| reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd); |
| reset_scb->hscb->lun = cmd->device->lun; |
| reset_scb->hscb->cdb_len = 0; |
| reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET; |
| reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE; |
| if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { |
| reset_scb->flags |= SCB_PACKETIZED; |
| } else { |
| reset_scb->hscb->control |= MK_MESSAGE; |
| } |
| dev->openings--; |
| dev->active++; |
| dev->commands_issued++; |
| |
| ahd_lock(ahd, &flags); |
| |
| LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links); |
| ahd_queue_scb(ahd, reset_scb); |
| |
| ahd->platform_data->eh_done = &done; |
| ahd_unlock(ahd, &flags); |
| |
| printf("%s: Device reset code sleeping\n", ahd_name(ahd)); |
| if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
| ahd_lock(ahd, &flags); |
| ahd->platform_data->eh_done = NULL; |
| ahd_unlock(ahd, &flags); |
| printf("%s: Device reset timer expired (active %d)\n", |
| ahd_name(ahd), dev->active); |
| retval = FAILED; |
| } |
| printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval); |
| |
| return (retval); |
| } |
| |
| /* |
| * Reset the SCSI bus. |
| */ |
| static int |
| ahd_linux_bus_reset(struct scsi_cmnd *cmd) |
| { |
| struct ahd_softc *ahd; |
| int found; |
| |
| ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) |
| printf("%s: Bus reset called for cmd %p\n", |
| ahd_name(ahd), cmd); |
| #endif |
| found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A', |
| /*initiate reset*/TRUE); |
| |
| if (bootverbose) |
| printf("%s: SCSI bus reset delivered. " |
| "%d SCBs aborted.\n", ahd_name(ahd), found); |
| |
| return (SUCCESS); |
| } |
| |
| struct scsi_host_template aic79xx_driver_template = { |
| .module = THIS_MODULE, |
| .name = "aic79xx", |
| .proc_name = "aic79xx", |
| .proc_info = ahd_linux_proc_info, |
| .info = ahd_linux_info, |
| .queuecommand = ahd_linux_queue, |
| .eh_abort_handler = ahd_linux_abort, |
| .eh_device_reset_handler = ahd_linux_dev_reset, |
| .eh_bus_reset_handler = ahd_linux_bus_reset, |
| #if defined(__i386__) |
| .bios_param = ahd_linux_biosparam, |
| #endif |
| .can_queue = AHD_MAX_QUEUE, |
| .this_id = -1, |
| .cmd_per_lun = 2, |
| .use_clustering = ENABLE_CLUSTERING, |
| .slave_alloc = ahd_linux_slave_alloc, |
| .slave_configure = ahd_linux_slave_configure, |
| .slave_destroy = ahd_linux_slave_destroy, |
| .target_alloc = ahd_linux_target_alloc, |
| .target_destroy = ahd_linux_target_destroy, |
| }; |
| |
| /******************************** Bus DMA *************************************/ |
| int |
| ahd_dma_tag_create(struct ahd_softc *ahd, 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 *ret_tag) |
| { |
| bus_dma_tag_t dmat; |
| |
| dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT); |
| if (dmat == NULL) |
| return (ENOMEM); |
| |
| /* |
| * Linux is very simplistic about DMA memory. For now don't |
| * maintain all specification information. Once Linux supplies |
| * better facilities for doing these operations, or the |
| * needs of this particular driver change, we might need to do |
| * more here. |
| */ |
| dmat->alignment = alignment; |
| dmat->boundary = boundary; |
| dmat->maxsize = maxsize; |
| *ret_tag = dmat; |
| return (0); |
| } |
| |
| void |
| ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) |
| { |
| free(dmat, M_DEVBUF); |
| } |
| |
| int |
| ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, |
| int flags, bus_dmamap_t *mapp) |
| { |
| *vaddr = pci_alloc_consistent(ahd->dev_softc, |
| dmat->maxsize, mapp); |
| if (*vaddr == NULL) |
| return (ENOMEM); |
| return(0); |
| } |
| |
| void |
| ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, |
| void* vaddr, bus_dmamap_t map) |
| { |
| pci_free_consistent(ahd->dev_softc, dmat->maxsize, |
| vaddr, 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 *cb, |
| void *cb_arg, int flags) |
| { |
| /* |
| * Assume for now that this will only be used during |
| * initialization and not for per-transaction buffer mapping. |
| */ |
| bus_dma_segment_t stack_sg; |
| |
| stack_sg.ds_addr = map; |
| stack_sg.ds_len = dmat->maxsize; |
| cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); |
| return (0); |
| } |
| |
| void |
| ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) |
| { |
| } |
| |
| int |
| ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) |
| { |
| /* Nothing to do */ |
| return (0); |
| } |
| |
| /********************* Platform Dependent Functions ***************************/ |
| static void |
| ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) |
| { |
| |
| if ((instance >= 0) |
| && (instance < NUM_ELEMENTS(aic79xx_iocell_info))) { |
| uint8_t *iocell_info; |
| |
| iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; |
| iocell_info[index] = value & 0xFFFF; |
| if (bootverbose) |
| printf("iocell[%d:%ld] = %d\n", instance, index, value); |
| } |
| } |
| |
| static void |
| ahd_linux_setup_tag_info_global(char *p) |
| { |
| int tags, i, j; |
| |
| tags = simple_strtoul(p + 1, NULL, 0) & 0xff; |
| printf("Setting Global Tags= %d\n", tags); |
| |
| for (i = 0; i < NUM_ELEMENTS(aic79xx_tag_info); i++) { |
| for (j = 0; j < AHD_NUM_TARGETS; j++) { |
| aic79xx_tag_info[i].tag_commands[j] = tags; |
| } |
| } |
| } |
| |
| static void |
| ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) |
| { |
| |
| if ((instance >= 0) && (targ >= 0) |
| && (instance < NUM_ELEMENTS(aic79xx_tag_info)) |
| && (targ < AHD_NUM_TARGETS)) { |
| aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; |
| if (bootverbose) |
| printf("tag_info[%d:%d] = %d\n", instance, targ, value); |
| } |
| } |
| |
| static char * |
| ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, |
| void (*callback)(u_long, int, int, int32_t), |
| u_long callback_arg) |
| { |
| char *tok_end; |
| char *tok_end2; |
| int i; |
| int instance; |
| int targ; |
| int done; |
| char tok_list[] = {'.', ',', '{', '}', '\0'}; |
| |
| /* All options use a ':' name/arg separator */ |
| if (*opt_arg != ':') |
| return (opt_arg); |
| opt_arg++; |
| instance = -1; |
| targ = -1; |
| done = FALSE; |
| /* |
| * Restore separator that may be in |
| * the middle of our option argument. |
| */ |
| tok_end = strchr(opt_arg, '\0'); |
| if (tok_end < end) |
| *tok_end = ','; |
| while (!done) { |
| switch (*opt_arg) { |
| case '{': |
| if (instance == -1) { |
| instance = 0; |
| } else { |
| if (depth > 1) { |
| if (targ == -1) |
| targ = 0; |
| } else { |
| printf("Malformed Option %s\n", |
| opt_name); |
| done = TRUE; |
| } |
| } |
| opt_arg++; |
| break; |
| case '}': |
| if (targ != -1) |
| targ = -1; |
| else if (instance != -1) |
| instance = -1; |
| opt_arg++; |
| break; |
| case ',': |
| case '.': |
| if (instance == -1) |
| done = TRUE; |
| else if (targ >= 0) |
| targ++; |
| else if (instance >= 0) |
| instance++; |
| opt_arg++; |
| break; |
| case '\0': |
| done = TRUE; |
| break; |
| default: |
| tok_end = end; |
| for (i = 0; tok_list[i]; i++) { |
| tok_end2 = strchr(opt_arg, tok_list[i]); |
| if ((tok_end2) && (tok_end2 < tok_end)) |
| tok_end = tok_end2; |
| } |
| callback(callback_arg, instance, targ, |
| simple_strtol(opt_arg, NULL, 0)); |
| opt_arg = tok_end; |
| break; |
| } |
| } |
| return (opt_arg); |
| } |
| |
| /* |
| * Handle Linux boot parameters. This routine allows for assigning a value |
| * to a parameter with a ':' between the parameter and the value. |
| * ie. aic79xx=stpwlev:1,extended |
| */ |
| static int |
| aic79xx_setup(char *s) |
| { |
| int i, n; |
| char *p; |
| char *end; |
| |
| static struct { |
| const char *name; |
| uint32_t *flag; |
| } options[] = { |
| { "extended", &aic79xx_extended }, |
| { "no_reset", &aic79xx_no_reset }, |
| { "verbose", &aic79xx_verbose }, |
| { "allow_memio", &aic79xx_allow_memio}, |
| #ifdef AHD_DEBUG |
| { "debug", &ahd_debug }, |
| #endif |
| { "reverse_scan", &aic79xx_reverse_scan }, |
| { "periodic_otag", &aic79xx_periodic_otag }, |
| { "pci_parity", &aic79xx_pci_parity }, |
| { "seltime", &aic79xx_seltime }, |
| { "tag_info", NULL }, |
| { "global_tag_depth", NULL}, |
| { "slewrate", NULL }, |
| { "precomp", NULL }, |
| { "amplitude", NULL }, |
| { "slowcrc", &aic79xx_slowcrc }, |
| }; |
| |
| end = strchr(s, '\0'); |
| |
| /* |
| * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS |
| * will never be 0 in this case. |
| */ |
| n = 0; |
| |
| while ((p = strsep(&s, ",.")) != NULL) { |
| if (*p == '\0') |
| continue; |
| for (i = 0; i < NUM_ELEMENTS(options); i++) { |
| |
| n = strlen(options[i].name); |
| if (strncmp(options[i].name, p, n) == 0) |
| break; |
| } |
| if (i == NUM_ELEMENTS(options)) |
| continue; |
| |
| if (strncmp(p, "global_tag_depth", n) == 0) { |
| ahd_linux_setup_tag_info_global(p + n); |
| } else if (strncmp(p, "tag_info", n) == 0) { |
| s = ahd_parse_brace_option("tag_info", p + n, end, |
| 2, ahd_linux_setup_tag_info, 0); |
| } else if (strncmp(p, "slewrate", n) == 0) { |
| s = ahd_parse_brace_option("slewrate", |
| p + n, end, 1, ahd_linux_setup_iocell_info, |
| AIC79XX_SLEWRATE_INDEX); |
| } else if (strncmp(p, "precomp", n) == 0) { |
| s = ahd_parse_brace_option("precomp", |
| p + n, end, 1, ahd_linux_setup_iocell_info, |
| AIC79XX_PRECOMP_INDEX); |
| } else if (strncmp(p, "amplitude", n) == 0) { |
| s = ahd_parse_brace_option("amplitude", |
| p + n, end, 1, ahd_linux_setup_iocell_info, |
| AIC79XX_AMPLITUDE_INDEX); |
| } else if (p[n] == ':') { |
| *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); |
| } else if (!strncmp(p, "verbose", n)) { |
| *(options[i].flag) = 1; |
| } else { |
| *(options[i].flag) ^= 0xFFFFFFFF; |
| } |
| } |
| return 1; |
| } |
| |
| __setup("aic79xx=", aic79xx_setup); |
| |
| uint32_t aic79xx_verbose; |
| |
| int |
| ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) |
| { |
| char buf[80]; |
| struct Scsi_Host *host; |
| char *new_name; |
| u_long s; |
| int retval; |
| |
| template->name = ahd->description; |
| host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); |
| if (host == NULL) |
| return (ENOMEM); |
| |
| *((struct ahd_softc **)host->hostdata) = ahd; |
| ahd->platform_data->host = host; |
| host->can_queue = AHD_MAX_QUEUE; |
| host->cmd_per_lun = 2; |
| host->sg_tablesize = AHD_NSEG; |
| host->this_id = ahd->our_id; |
| host->irq = ahd->platform_data->irq; |
| host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; |
| host->max_lun = AHD_NUM_LUNS; |
| host->max_channel = 0; |
| host->sg_tablesize = AHD_NSEG; |
| ahd_lock(ahd, &s); |
| ahd_set_unit(ahd, ahd_linux_unit++); |
| ahd_unlock(ahd, &s); |
| sprintf(buf, "scsi%d", host->host_no); |
| new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); |
| if (new_name != NULL) { |
| strcpy(new_name, buf); |
| ahd_set_name(ahd, new_name); |
| } |
| host->unique_id = ahd->unit; |
| ahd_linux_initialize_scsi_bus(ahd); |
| ahd_intr_enable(ahd, TRUE); |
| |
| host->transportt = ahd_linux_transport_template; |
| |
| retval = scsi_add_host(host, &ahd->dev_softc->dev); |
| if (retval) { |
| printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); |
| scsi_host_put(host); |
| return retval; |
| } |
| |
| scsi_scan_host(host); |
| return 0; |
| } |
| |
| uint64_t |
| ahd_linux_get_memsize(void) |
| { |
| struct sysinfo si; |
| |
| si_meminfo(&si); |
| return ((uint64_t)si.totalram << PAGE_SHIFT); |
| } |
| |
| /* |
| * Place the SCSI bus into a known state by either resetting it, |
| * or forcing transfer negotiations on the next command to any |
| * target. |
| */ |
| static void |
| ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) |
| { |
| u_int target_id; |
| u_int numtarg; |
| unsigned long s; |
| |
| target_id = 0; |
| numtarg = 0; |
| |
| if (aic79xx_no_reset != 0) |
| ahd->flags &= ~AHD_RESET_BUS_A; |
| |
| if ((ahd->flags & AHD_RESET_BUS_A) != 0) |
| ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); |
| else |
| numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; |
| |
| ahd_lock(ahd, &s); |
| |
| /* |
| * Force negotiation to async for all targets that |
| * will not see an initial bus reset. |
| */ |
| for (; target_id < numtarg; target_id++) { |
| struct ahd_devinfo devinfo; |
| struct ahd_initiator_tinfo *tinfo; |
| struct ahd_tmode_tstate *tstate; |
| |
| tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
| target_id, &tstate); |
| ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, |
| CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); |
| ahd_update_neg_request(ahd, &devinfo, tstate, |
| tinfo, AHD_NEG_ALWAYS); |
| } |
| ahd_unlock(ahd, &s); |
| /* Give the bus some time to recover */ |
| if ((ahd->flags & AHD_RESET_BUS_A) != 0) { |
| ahd_freeze_simq(ahd); |
| msleep(AIC79XX_RESET_DELAY); |
| ahd_release_simq(ahd); |
| } |
| } |
| |
| int |
| ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) |
| { |
| ahd->platform_data = |
| malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT); |
| if (ahd->platform_data == NULL) |
| return (ENOMEM); |
| memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); |
| ahd->platform_data->irq = AHD_LINUX_NOIRQ; |
| ahd_lockinit(ahd); |
| ahd->seltime = (aic79xx_seltime & 0x3) << 4; |
| return (0); |
| } |
| |
| void |
| ahd_platform_free(struct ahd_softc *ahd) |
| { |
| struct scsi_target *starget; |
| int i, j; |
| |
| if (ahd->platform_data != NULL) { |
| /* destroy all of the device and target objects */ |
| for (i = 0; i < AHD_NUM_TARGETS; i++) { |
| starget = ahd->platform_data->starget[i]; |
| if (starget != NULL) { |
| for (j = 0; j < AHD_NUM_LUNS; j++) { |
| struct ahd_linux_target *targ = |
| scsi_transport_target_data(starget); |
| if (targ->sdev[j] == NULL) |
| continue; |
| targ->sdev[j] = NULL; |
| } |
| ahd->platform_data->starget[i] = NULL; |
| } |
| } |
| |
| if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) |
| free_irq(ahd->platform_data->irq, ahd); |
| if (ahd->tags[0] == BUS_SPACE_PIO |
| && ahd->bshs[0].ioport != 0) |
| release_region(ahd->bshs[0].ioport, 256); |
| if (ahd->tags[1] == BUS_SPACE_PIO |
| && ahd->bshs[1].ioport != 0) |
| release_region(ahd->bshs[1].ioport, 256); |
| if (ahd->tags[0] == BUS_SPACE_MEMIO |
| && ahd->bshs[0].maddr != NULL) { |
| iounmap(ahd->bshs[0].maddr); |
| release_mem_region(ahd->platform_data->mem_busaddr, |
| 0x1000); |
| } |
| if (ahd->platform_data->host) |
| scsi_host_put(ahd->platform_data->host); |
| |
| free(ahd->platform_data, M_DEVBUF); |
| } |
| } |
| |
| void |
| ahd_platform_init(struct ahd_softc *ahd) |
| { |
| /* |
| * Lookup and commit any modified IO Cell options. |
| */ |
| if (ahd->unit < NUM_ELEMENTS(aic79xx_iocell_info)) { |
| struct ahd_linux_iocell_opts *iocell_opts; |
| |
| iocell_opts = &aic79xx_iocell_info[ahd->unit]; |
| if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) |
| AHD_SET_PRECOMP(ahd, iocell_opts->precomp); |
| if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) |
| AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); |
| if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) |
| AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); |
| } |
| |
| } |
| |
| void |
| ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) |
| { |
| ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
| SCB_GET_CHANNEL(ahd, scb), |
| SCB_GET_LUN(scb), SCB_LIST_NULL, |
| ROLE_UNKNOWN, CAM_REQUEUE_REQ); |
| } |
| |
| void |
| ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| ahd_queue_alg alg) |
| { |
| struct scsi_target *starget; |
| struct ahd_linux_target *targ; |
| struct ahd_linux_device *dev; |
| struct scsi_device *sdev; |
| int was_queuing; |
| int now_queuing; |
| |
| starget = ahd->platform_data->starget[devinfo->target]; |
| targ = scsi_transport_target_data(starget); |
| BUG_ON(targ == NULL); |
| sdev = targ->sdev[devinfo->lun]; |
| if (sdev == NULL) |
| return; |
| |
| dev = scsi_transport_device_data(sdev); |
| |
| if (dev == NULL) |
| return; |
| was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); |
| switch (alg) { |
| default: |
| case AHD_QUEUE_NONE: |
| now_queuing = 0; |
| break; |
| case AHD_QUEUE_BASIC: |
| now_queuing = AHD_DEV_Q_BASIC; |
| break; |
| case AHD_QUEUE_TAGGED: |
| now_queuing = AHD_DEV_Q_TAGGED; |
| break; |
| } |
| if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 |
| && (was_queuing != now_queuing) |
| && (dev->active != 0)) { |
| dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; |
| dev->qfrozen++; |
| } |
| |
| dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); |
| if (now_queuing) { |
| u_int usertags; |
| |
| usertags = ahd_linux_user_tagdepth(ahd, devinfo); |
| if (!was_queuing) { |
| /* |
| * Start out agressively and allow our |
| * dynamic queue depth algorithm to take |
| * care of the rest. |
| */ |
| dev->maxtags = usertags; |
| dev->openings = dev->maxtags - dev->active; |
| } |
| if (dev->maxtags == 0) { |
| /* |
| * Queueing is disabled by the user. |
| */ |
| dev->openings = 1; |
| } else if (alg == AHD_QUEUE_TAGGED) { |
| dev->flags |= AHD_DEV_Q_TAGGED; |
| if (aic79xx_periodic_otag != 0) |
| dev->flags |= AHD_DEV_PERIODIC_OTAG; |
| } else |
| dev->flags |= AHD_DEV_Q_BASIC; |
| } else { |
| /* We can only have one opening. */ |
| dev->maxtags = 0; |
| dev->openings = 1 - dev->active; |
| } |
| |
| switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { |
| case AHD_DEV_Q_BASIC: |
| scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); |
| scsi_activate_tcq(sdev, dev->openings + dev->active); |
| break; |
| case AHD_DEV_Q_TAGGED: |
| scsi_set_tag_type(sdev, MSG_ORDERED_TASK); |
| scsi_activate_tcq(sdev, dev->openings + dev->active); |
| break; |
| default: |
| /* |
| * We allow the OS to queue 2 untagged transactions to |
| * us at any time even though we can only execute them |
| * serially on the controller/device. This should |
| * remove some latency. |
| */ |
| scsi_deactivate_tcq(sdev, 1); |
| break; |
| } |
| } |
| |
| int |
| ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, |
| int lun, u_int tag, role_t role, uint32_t status) |
| { |
| return 0; |
| } |
| |
| static u_int |
| ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| { |
| static int warned_user; |
| u_int tags; |
| |
| tags = 0; |
| if ((ahd->user_discenable & devinfo->target_mask) != 0) { |
| if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) { |
| |
| if (warned_user == 0) { |
| printf(KERN_WARNING |
| "aic79xx: WARNING: Insufficient tag_info instances\n" |
| "aic79xx: for installed controllers. Using defaults\n" |
| "aic79xx: Please update the aic79xx_tag_info array in\n" |
| "aic79xx: the aic79xx_osm.c source file.\n"); |
| warned_user++; |
| } |
| tags = AHD_MAX_QUEUE; |
| } else { |
| adapter_tag_info_t *tag_info; |
| |
| tag_info = &aic79xx_tag_info[ahd->unit]; |
| tags = tag_info->tag_commands[devinfo->target_offset]; |
| if (tags > AHD_MAX_QUEUE) |
| tags = AHD_MAX_QUEUE; |
| } |
| } |
| return (tags); |
| } |
| |
| /* |
| * Determines the queue depth for a given device. |
| */ |
| static void |
| ahd_linux_device_queue_depth(struct scsi_device *sdev) |
| { |
| struct ahd_devinfo devinfo; |
| u_int tags; |
| struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); |
| |
| ahd_compile_devinfo(&devinfo, |
| ahd->our_id, |
| sdev->sdev_target->id, sdev->lun, |
| sdev->sdev_target->channel == 0 ? 'A' : 'B', |
| ROLE_INITIATOR); |
| tags = ahd_linux_user_tagdepth(ahd, &devinfo); |
| if (tags != 0 && sdev->tagged_supported != 0) { |
| |
| ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED); |
| ahd_print_devinfo(ahd, &devinfo); |
| printf("Tagged Queuing enabled. Depth %d\n", tags); |
| } else { |
| ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE); |
| } |
| } |
| |
| static int |
| ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, |
| struct scsi_cmnd *cmd) |
| { |
| struct scb *scb; |
| struct hardware_scb *hscb; |
| struct ahd_initiator_tinfo *tinfo; |
| struct ahd_tmode_tstate *tstate; |
| u_int col_idx; |
| uint16_t mask; |
| unsigned long flags; |
| |
| ahd_lock(ahd, &flags); |
| |
| /* |
| * Get an scb to use. |
| */ |
| tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
| cmd->device->id, &tstate); |
| if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 |
| || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { |
| col_idx = AHD_NEVER_COL_IDX; |
| } else { |
| col_idx = AHD_BUILD_COL_IDX(cmd->device->id, |
| cmd->device->lun); |
| } |
| if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { |
| ahd->flags |= AHD_RESOURCE_SHORTAGE; |
| ahd_unlock(ahd, &flags); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| scb->io_ctx = cmd; |
| scb->platform_data->dev = dev; |
| hscb = scb->hscb; |
| cmd->host_scribble = (char *)scb; |
| |
| /* |
| * Fill out basics of the HSCB. |
| */ |
| hscb->control = 0; |
| hscb->scsiid = BUILD_SCSIID(ahd, cmd); |
| hscb->lun = cmd->device->lun; |
| scb->hscb->task_management = 0; |
| mask = SCB_GET_TARGET_MASK(ahd, scb); |
| |
| if ((ahd->user_discenable & mask) != 0) |
| hscb->control |= DISCENB; |
| |
| if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) |
| scb->flags |= SCB_PACKETIZED; |
| |
| if ((tstate->auto_negotiate & mask) != 0) { |
| scb->flags |= SCB_AUTO_NEGOTIATE; |
| scb->hscb->control |= MK_MESSAGE; |
| } |
| |
| if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { |
| int msg_bytes; |
| uint8_t tag_msgs[2]; |
| |
| msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); |
| if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { |
| hscb->control |= tag_msgs[0]; |
| if (tag_msgs[0] == MSG_ORDERED_TASK) |
| dev->commands_since_idle_or_otag = 0; |
| } else |
| if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH |
| && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { |
| hscb->control |= MSG_ORDERED_TASK; |
| dev->commands_since_idle_or_otag = 0; |
| } else { |
| hscb->control |= MSG_SIMPLE_TASK; |
| } |
| } |
| |
| hscb->cdb_len = cmd->cmd_len; |
| memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); |
| |
| scb->platform_data->xfer_len = 0; |
| ahd_set_residual(scb, 0); |
| ahd_set_sense_residual(scb, 0); |
| scb->sg_count = 0; |
| if (cmd->use_sg != 0) { |
| void *sg; |
| struct scatterlist *cur_seg; |
| u_int nseg; |
| int dir; |
| |
| cur_seg = (struct scatterlist *)cmd->request_buffer; |
| dir = cmd->sc_data_direction; |
| nseg = pci_map_sg(ahd->dev_softc, cur_seg, |
| cmd->use_sg, dir); |
| scb->platform_data->xfer_len = 0; |
| for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { |
| dma_addr_t addr; |
| bus_size_t len; |
| |
| addr = sg_dma_address(cur_seg); |
| len = sg_dma_len(cur_seg); |
| scb->platform_data->xfer_len += len; |
| sg = ahd_sg_setup(ahd, scb, sg, addr, len, |
| /*last*/nseg == 1); |
| } |
| } else if (cmd->request_bufflen != 0) { |
| void *sg; |
| dma_addr_t addr; |
| int dir; |
| |
| sg = scb->sg_list; |
| dir = cmd->sc_data_direction; |
| addr = pci_map_single(ahd->dev_softc, |
| cmd->request_buffer, |
| cmd->request_bufflen, dir); |
| scb->platform_data->xfer_len = cmd->request_bufflen; |
| scb->platform_data->buf_busaddr = addr; |
| sg = ahd_sg_setup(ahd, scb, sg, addr, |
| cmd->request_bufflen, /*last*/TRUE); |
| } |
| |
| LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); |
| dev->openings--; |
| dev->active++; |
| dev->commands_issued++; |
| |
| if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) |
| dev->commands_since_idle_or_otag++; |
| scb->flags |= SCB_ACTIVE; |
| ahd_queue_scb(ahd, scb); |
| |
| ahd_unlock(ahd, &flags); |
| |
| return 0; |
| } |
| |
| /* |
| * SCSI controller interrupt handler. |
| */ |
| irqreturn_t |
| ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs) |
| { |
| struct ahd_softc *ahd; |
| u_long flags; |
| int ours; |
| |
| ahd = (struct ahd_softc *) dev_id; |
| ahd_lock(ahd, &flags); |
| ours = ahd_intr(ahd); |
| ahd_unlock(ahd, &flags); |
| return IRQ_RETVAL(ours); |
| } |
| |
| void |
| ahd_send_async(struct ahd_softc *ahd, char channel, |
| u_int target, u_int lun, ac_code code, void *arg) |
| { |
| switch (code) { |
| case AC_TRANSFER_NEG: |
| { |
| char buf[80]; |
| struct scsi_target *starget; |
| struct info_str info; |
| struct ahd_initiator_tinfo *tinfo; |
| struct ahd_tmode_tstate *tstate; |
| unsigned int target_ppr_options; |
| |
| BUG_ON(target == CAM_TARGET_WILDCARD); |
| |
| info.buffer = buf; |
| info.length = sizeof(buf); |
| info.offset = 0; |
| info.pos = 0; |
| tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, |
| target, &tstate); |
| |
| /* |
| * Don't bother reporting results while |
| * negotiations are still pending. |
| */ |
| if (tinfo->curr.period != tinfo->goal.period |
| || tinfo->curr.width != tinfo->goal.width |
| || tinfo->curr.offset != tinfo->goal.offset |
| || tinfo->curr.ppr_options != tinfo->goal.ppr_options) |
| if (bootverbose == 0) |
| break; |
| |
| /* |
| * Don't bother reporting results that |
| * are identical to those last reported. |
| */ |
| starget = ahd->platform_data->starget[target]; |
| if (starget == NULL) |
| break; |
| |
| target_ppr_options = |
| (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) |
| + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) |
| + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) |
| + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) |
| + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) |
| + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) |
| + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) |
| + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); |
| |
| if (tinfo->curr.period == spi_period(starget) |
| && tinfo->curr.width == spi_width(starget) |
| && tinfo->curr.offset == spi_offset(starget) |
| && tinfo->curr.ppr_options == target_ppr_options) |
| if (bootverbose == 0) |
| break; |
| |
| spi_period(starget) = tinfo->curr.period; |
| spi_width(starget) = tinfo->curr.width; |
| spi_offset(starget) = tinfo->curr.offset; |
| spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; |
| spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; |
| spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; |
| spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; |
| spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; |
| spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; |
| spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; |
| spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; |
| spi_display_xfer_agreement(starget); |
| break; |
| } |
| case AC_SENT_BDR: |
| { |
| WARN_ON(lun != CAM_LUN_WILDCARD); |
| scsi_report_device_reset(ahd->platform_data->host, |
| channel - 'A', target); |
| break; |
| } |
| case AC_BUS_RESET: |
| if (ahd->platform_data->host != NULL) { |
| scsi_report_bus_reset(ahd->platform_data->host, |
| channel - 'A'); |
| } |
| break; |
| default: |
| panic("ahd_send_async: Unexpected async event"); |
| } |
| } |
| |
| /* |
| * Calls the higher level scsi done function and frees the scb. |
| */ |
| void |
| ahd_done(struct ahd_softc *ahd, struct scb *scb) |
| { |
| struct scsi_cmnd *cmd; |
| struct ahd_linux_device *dev; |
| |
| if ((scb->flags & SCB_ACTIVE) == 0) { |
| printf("SCB %d done'd twice\n", SCB_GET_TAG(scb)); |
| ahd_dump_card_state(ahd); |
| panic("Stopping for safety"); |
| } |
| LIST_REMOVE(scb, pending_links); |
| cmd = scb->io_ctx; |
| dev = scb->platform_data->dev; |
| dev->active--; |
| dev->openings++; |
| if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { |
| cmd->result &= ~(CAM_DEV_QFRZN << 16); |
| dev->qfrozen--; |
| } |
| ahd_linux_unmap_scb(ahd, scb); |
| |
| /* |
| * Guard against stale sense data. |
| * The Linux mid-layer assumes that sense |
| * was retrieved anytime the first byte of |
| * the sense buffer looks "sane". |
| */ |
| cmd->sense_buffer[0] = 0; |
| if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { |
| uint32_t amount_xferred; |
| |
| amount_xferred = |
| ahd_get_transfer_length(scb) - ahd_get_residual(scb); |
| if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_MISC) != 0) { |
| ahd_print_path(ahd, scb); |
| printf("Set CAM_UNCOR_PARITY\n"); |
| } |
| #endif |
| ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); |
| #ifdef AHD_REPORT_UNDERFLOWS |
| /* |
| * This code is disabled by default as some |
| * clients of the SCSI system do not properly |
| * initialize the underflow parameter. This |
| * results in spurious termination of commands |
| * that complete as expected (e.g. underflow is |
| * allowed as command can return variable amounts |
| * of data. |
| */ |
| } else if (amount_xferred < scb->io_ctx->underflow) { |
| u_int i; |
| |
| ahd_print_path(ahd, scb); |
| printf("CDB:"); |
| for (i = 0; i < scb->io_ctx->cmd_len; i++) |
| printf(" 0x%x", scb->io_ctx->cmnd[i]); |
| printf("\n"); |
| ahd_print_path(ahd, scb); |
| printf("Saw underflow (%ld of %ld bytes). " |
| "Treated as error\n", |
| ahd_get_residual(scb), |
| ahd_get_transfer_length(scb)); |
| ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); |
| #endif |
| } else { |
| ahd_set_transaction_status(scb, CAM_REQ_CMP); |
| } |
| } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { |
| ahd_linux_handle_scsi_status(ahd, cmd->device, scb); |
| } |
| |
| if (dev->openings == 1 |
| && ahd_get_transaction_status(scb) == CAM_REQ_CMP |
| && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) |
| dev->tag_success_count++; |
| /* |
| * Some devices deal with temporary internal resource |
| * shortages by returning queue full. When the queue |
| * full occurrs, we throttle back. Slowly try to get |
| * back to our previous queue depth. |
| */ |
| if ((dev->openings + dev->active) < dev->maxtags |
| && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { |
| dev->tag_success_count = 0; |
| dev->openings++; |
| } |
| |
| if (dev->active == 0) |
| dev->commands_since_idle_or_otag = 0; |
| |
| if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
| printf("Recovery SCB completes\n"); |
| if (ahd_get_transaction_status(scb) == CAM_BDR_SENT |
| || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) |
| ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); |
| |
| if (ahd->platform_data->eh_done) |
| complete(ahd->platform_data->eh_done); |
| } |
| |
| ahd_free_scb(ahd, scb); |
| ahd_linux_queue_cmd_complete(ahd, cmd); |
| } |
| |
| static void |
| ahd_linux_handle_scsi_status(struct ahd_softc *ahd, |
| struct scsi_device *sdev, struct scb *scb) |
| { |
| struct ahd_devinfo devinfo; |
| struct ahd_linux_device *dev = scsi_transport_device_data(sdev); |
| |
| ahd_compile_devinfo(&devinfo, |
| ahd->our_id, |
| sdev->sdev_target->id, sdev->lun, |
| sdev->sdev_target->channel == 0 ? 'A' : 'B', |
| ROLE_INITIATOR); |
| |
| /* |
| * We don't currently trust the mid-layer to |
| * properly deal with queue full or busy. So, |
| * when one occurs, we tell the mid-layer to |
| * unconditionally requeue the command to us |
| * so that we can retry it ourselves. We also |
| * implement our own throttling mechanism so |
| * we don't clobber the device with too many |
| * commands. |
| */ |
| switch (ahd_get_scsi_status(scb)) { |
| default: |
| break; |
| case SCSI_STATUS_CHECK_COND: |
| case SCSI_STATUS_CMD_TERMINATED: |
| { |
| struct scsi_cmnd *cmd; |
| |
| /* |
| * Copy sense information to the OS's cmd |
| * structure if it is available. |
| */ |
| cmd = scb->io_ctx; |
| if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { |
| struct scsi_status_iu_header *siu; |
| u_int sense_size; |
| u_int sense_offset; |
| |
| if (scb->flags & SCB_SENSE) { |
| sense_size = MIN(sizeof(struct scsi_sense_data) |
| - ahd_get_sense_residual(scb), |
| sizeof(cmd->sense_buffer)); |
| sense_offset = 0; |
| } else { |
| /* |
| * Copy only the sense data into the provided |
| * buffer. |
| */ |
| siu = (struct scsi_status_iu_header *) |
| scb->sense_data; |
| sense_size = MIN(scsi_4btoul(siu->sense_length), |
| sizeof(cmd->sense_buffer)); |
| sense_offset = SIU_SENSE_OFFSET(siu); |
| } |
| |
| memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); |
| memcpy(cmd->sense_buffer, |
| ahd_get_sense_buf(ahd, scb) |
| + sense_offset, sense_size); |
| cmd->result |= (DRIVER_SENSE << 24); |
| |
| #ifdef AHD_DEBUG |
| if (ahd_debug & AHD_SHOW_SENSE) { |
| int i; |
| |
| printf("Copied %d bytes of sense data at %d:", |
| sense_size, sense_offset); |
| for (i = 0; i < sense_size; i++) { |
| if ((i & 0xF) == 0) |
| printf("\n"); |
| printf("0x%x ", cmd->sense_buffer[i]); |
| } |
| printf("\n"); |
| } |
| #endif |
| } |
| break; |
| } |
| case SCSI_STATUS_QUEUE_FULL: |
| /* |
| * By the time the core driver has returned this |
| * command, all other commands that were queued |
| * to us but not the device have been returned. |
| * This ensures that dev->active is equal to |
| * the number of commands actually queued to |
| * the device. |
| */ |
| dev->tag_success_count = 0; |
| if (dev->active != 0) { |
| /* |
| * Drop our opening count to the number |
| * of commands currently outstanding. |
| */ |
| dev->openings = 0; |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_QFULL) != 0) { |
| ahd_print_path(ahd, scb); |
| printf("Dropping tag count to %d\n", |
| dev->active); |
| } |
| #endif |
| if (dev->active == dev->tags_on_last_queuefull) { |
| |
| dev->last_queuefull_same_count++; |
| /* |
| * If we repeatedly see a queue full |
| * at the same queue depth, this |
| * device has a fixed number of tag |
| * slots. Lock in this tag depth |
| * so we stop seeing queue fulls from |
| * this device. |
| */ |
| if (dev->last_queuefull_same_count |
| == AHD_LOCK_TAGS_COUNT) { |
| dev->maxtags = dev->active; |
| ahd_print_path(ahd, scb); |
| printf("Locking max tag count at %d\n", |
| dev->active); |
| } |
| } else { |
| dev->tags_on_last_queuefull = dev->active; |
| dev->last_queuefull_same_count = 0; |
| } |
| ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
| ahd_set_scsi_status(scb, SCSI_STATUS_OK); |
| ahd_platform_set_tags(ahd, &devinfo, |
| (dev->flags & AHD_DEV_Q_BASIC) |
| ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); |
| break; |
| } |
| /* |
| * Drop down to a single opening, and treat this |
| * as if the target returned BUSY SCSI status. |
| */ |
| dev->openings = 1; |
| ahd_platform_set_tags(ahd, &devinfo, |
| (dev->flags & AHD_DEV_Q_BASIC) |
| ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); |
| ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); |
| } |
| } |
| |
| static void |
| ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) |
| { |
| int status; |
| int new_status = DID_OK; |
| int do_fallback = 0; |
| int scsi_status; |
| |
| /* |
| * Map CAM error codes into Linux Error codes. We |
| * avoid the conversion so that the DV code has the |
| * full error information available when making |
| * state change decisions. |
| */ |
| |
| status = ahd_cmd_get_transaction_status(cmd); |
| switch (status) { |
| case CAM_REQ_INPROG: |
| case CAM_REQ_CMP: |
| new_status = DID_OK; |
| break; |
| case CAM_AUTOSENSE_FAIL: |
| new_status = DID_ERROR; |
| /* Fallthrough */ |
| case CAM_SCSI_STATUS_ERROR: |
| scsi_status = ahd_cmd_get_scsi_status(cmd); |
| |
| switch(scsi_status) { |
| case SCSI_STATUS_CMD_TERMINATED: |
| case SCSI_STATUS_CHECK_COND: |
| if ((cmd->result >> 24) != DRIVER_SENSE) { |
| do_fallback = 1; |
| } else { |
| struct scsi_sense_data *sense; |
| |
| sense = (struct scsi_sense_data *) |
| &cmd->sense_buffer; |
| if (sense->extra_len >= 5 && |
| (sense->add_sense_code == 0x47 |
| || sense->add_sense_code == 0x48)) |
| do_fallback = 1; |
| } |
| break; |
| default: |
| break; |
| } |
| break; |
| case CAM_REQ_ABORTED: |
| new_status = DID_ABORT; |
| break; |
| case CAM_BUSY: |
| new_status = DID_BUS_BUSY; |
| break; |
| case CAM_REQ_INVALID: |
| case CAM_PATH_INVALID: |
| new_status = DID_BAD_TARGET; |
| break; |
| case CAM_SEL_TIMEOUT: |
| new_status = DID_NO_CONNECT; |
| break; |
| case CAM_SCSI_BUS_RESET: |
| case CAM_BDR_SENT: |
| new_status = DID_RESET; |
| break; |
| case CAM_UNCOR_PARITY: |
| new_status = DID_PARITY; |
| do_fallback = 1; |
| break; |
| case CAM_CMD_TIMEOUT: |
| new_status = DID_TIME_OUT; |
| do_fallback = 1; |
| break; |
| case CAM_REQ_CMP_ERR: |
| case CAM_UNEXP_BUSFREE: |
| case CAM_DATA_RUN_ERR: |
| new_status = DID_ERROR; |
| do_fallback = 1; |
| break; |
| case CAM_UA_ABORT: |
| case CAM_NO_HBA: |
| case CAM_SEQUENCE_FAIL: |
| case CAM_CCB_LEN_ERR: |
| case CAM_PROVIDE_FAIL: |
| case CAM_REQ_TERMIO: |
| case CAM_UNREC_HBA_ERROR: |
| case CAM_REQ_TOO_BIG: |
| new_status = DID_ERROR; |
| break; |
| case CAM_REQUEUE_REQ: |
| new_status = DID_REQUEUE; |
| break; |
| default: |
| /* We should never get here */ |
| new_status = DID_ERROR; |
| break; |
| } |
| |
| if (do_fallback) { |
| printf("%s: device overrun (status %x) on %d:%d:%d\n", |
| ahd_name(ahd), status, cmd->device->channel, |
| cmd->device->id, cmd->device->lun); |
| } |
| |
| ahd_cmd_set_transaction_status(cmd, new_status); |
| |
| cmd->scsi_done(cmd); |
| } |
| |
| void |
| ahd_freeze_simq(struct ahd_softc *ahd) |
| { |
| scsi_block_requests(ahd->platform_data->host); |
| } |
| |
| void |
| ahd_release_simq(struct ahd_softc *ahd) |
| { |
| scsi_unblock_requests(ahd->platform_data->host); |
| } |
| |
| static int |
| ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) |
| { |
| struct ahd_softc *ahd; |
| struct ahd_linux_device *dev; |
| struct scb *pending_scb; |
| u_int saved_scbptr; |
| u_int active_scbptr; |
| u_int last_phase; |
| u_int saved_scsiid; |
| u_int cdb_byte; |
| int retval; |
| int was_paused; |
| int paused; |
| int wait; |
| int disconnected; |
| ahd_mode_state saved_modes; |
| unsigned long flags; |
| |
| pending_scb = NULL; |
| paused = FALSE; |
| wait = FALSE; |
| ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
| |
| scmd_printk(KERN_INFO, cmd, |
| "Attempting to queue an ABORT message:"); |
| |
| printf("CDB:"); |
| for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) |
| printf(" 0x%x", cmd->cmnd[cdb_byte]); |
| printf("\n"); |
| |
| ahd_lock(ahd, &flags); |
| |
| /* |
| * First determine if we currently own this command. |
| * Start by searching the device queue. If not found |
| * there, check the pending_scb list. If not found |
| * at all, and the system wanted us to just abort the |
| * command, return success. |
| */ |
| dev = scsi_transport_device_data(cmd->device); |
| |
| if (dev == NULL) { |
| /* |
| * No target device for this command exists, |
| * so we must not still own the command. |
| */ |
| scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); |
| retval = SUCCESS; |
| goto no_cmd; |
| } |
| |
| /* |
| * See if we can find a matching cmd in the pending list. |
| */ |
| LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
| if (pending_scb->io_ctx == cmd) |
| break; |
| } |
| |
| if (pending_scb == NULL) { |
| scmd_printk(KERN_INFO, cmd, "Command not found\n"); |
| goto no_cmd; |
| } |
| |
| if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { |
| /* |
| * We can't queue two recovery actions using the same SCB |
| */ |
| retval = FAILED; |
| goto done; |
| } |
| |
| /* |
| * Ensure that the card doesn't do anything |
| * behind our back. Also make sure that we |
| * didn't "just" miss an interrupt that would |
| * affect this cmd. |
| */ |
| was_paused = ahd_is_paused(ahd); |
| ahd_pause_and_flushwork(ahd); |
| paused = TRUE; |
| |
| if ((pending_scb->flags & SCB_ACTIVE) == 0) { |
| scmd_printk(KERN_INFO, cmd, "Command already completed\n"); |
| goto no_cmd; |
| } |
| |
| printf("%s: At time of recovery, card was %spaused\n", |
| ahd_name(ahd), was_paused ? "" : "not "); |
| ahd_dump_card_state(ahd); |
| |
| disconnected = TRUE; |
| if (ahd_search_qinfifo(ahd, cmd->device->id, |
| cmd->device->channel + 'A', |
| cmd->device->lun, |
| pending_scb->hscb->tag, |
| ROLE_INITIATOR, CAM_REQ_ABORTED, |
| SEARCH_COMPLETE) > 0) { |
| printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", |
| ahd_name(ahd), cmd->device->channel, |
| cmd->device->id, cmd->device->lun); |
| retval = SUCCESS; |
| goto done; |
| } |
| |
| saved_modes = ahd_save_modes(ahd); |
| ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| last_phase = ahd_inb(ahd, LASTPHASE); |
| saved_scbptr = ahd_get_scbptr(ahd); |
| active_scbptr = saved_scbptr; |
| if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { |
| struct scb *bus_scb; |
| |
| bus_scb = ahd_lookup_scb(ahd, active_scbptr); |
| if (bus_scb == pending_scb) |
| disconnected = FALSE; |
| } |
| |
| /* |
| * At this point, pending_scb is the scb associated with the |
| * passed in command. That command is currently active on the |
| * bus or is in the disconnected state. |
| */ |
| saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); |
| if (last_phase != P_BUSFREE |
| && SCB_GET_TAG(pending_scb) == active_scbptr) { |
| |
| /* |
| * We're active on the bus, so assert ATN |
| * and hope that the target responds. |
| */ |
| pending_scb = ahd_lookup_scb(ahd, active_scbptr); |
| pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
| ahd_outb(ahd, MSG_OUT, HOST_MSG); |
| ahd_outb(ahd, SCSISIGO, last_phase|ATNO); |
| scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); |
| wait = TRUE; |
| } else if (disconnected) { |
| |
| /* |
| * Actually re-queue this SCB in an attempt |
| * to select the device before it reconnects. |
| */ |
| pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
| ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); |
| pending_scb->hscb->cdb_len = 0; |
| pending_scb->hscb->task_attribute = 0; |
| pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; |
| |
| if ((pending_scb->flags & SCB_PACKETIZED) != 0) { |
| /* |
| * Mark the SCB has having an outstanding |
| * task management function. Should the command |
| * complete normally before the task management |
| * function can be sent, the host will be notified |
| * to abort our requeued SCB. |
| */ |
| ahd_outb(ahd, SCB_TASK_MANAGEMENT, |
| pending_scb->hscb->task_management); |
| } else { |
| /* |
| * If non-packetized, set the MK_MESSAGE control |
| * bit indicating that we desire to send a message. |
| * We also set the disconnected flag since there is |
| * no guarantee that our SCB control byte matches |
| * the version on the card. We don't want the |
| * sequencer to abort the command thinking an |
| * unsolicited reselection occurred. |
| */ |
| pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; |
| |
| /* |
| * The sequencer will never re-reference the |
| * in-core SCB. To make sure we are notified |
| * during reslection, set the MK_MESSAGE flag in |
| * the card's copy of the SCB. |
| */ |
| ahd_outb(ahd, SCB_CONTROL, |
| ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); |
| } |
| |
| /* |
| * Clear out any entries in the QINFIFO first |
| * so we are the next SCB for this target |
| * to run. |
| */ |
| ahd_search_qinfifo(ahd, cmd->device->id, |
| cmd->device->channel + 'A', cmd->device->lun, |
| SCB_LIST_NULL, ROLE_INITIATOR, |
| CAM_REQUEUE_REQ, SEARCH_COMPLETE); |
| ahd_qinfifo_requeue_tail(ahd, pending_scb); |
| ahd_set_scbptr(ahd, saved_scbptr); |
| ahd_print_path(ahd, pending_scb); |
| printf("Device is disconnected, re-queuing SCB\n"); |
| wait = TRUE; |
| } else { |
| scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); |
| retval = FAILED; |
| goto done; |
| } |
| |
| no_cmd: |
| /* |
| * Our assumption is that if we don't have the command, no |
| * recovery action was required, so we return success. Again, |
| * the semantics of the mid-layer recovery engine are not |
| * well defined, so this may change in time. |
| */ |
| retval = SUCCESS; |
| done: |
| if (paused) |
| ahd_unpause(ahd); |
| if (wait) { |
| DECLARE_COMPLETION(done); |
| |
| ahd->platform_data->eh_done = &done; |
| ahd_unlock(ahd, &flags); |
| |
| printf("%s: Recovery code sleeping\n", ahd_name(ahd)); |
| if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
| ahd_lock(ahd, &flags); |
| ahd->platform_data->eh_done = NULL; |
| ahd_unlock(ahd, &flags); |
| printf("%s: Timer Expired (active %d)\n", |
| ahd_name(ahd), dev->active); |
| retval = FAILED; |
| } |
| printf("Recovery code awake\n"); |
| } else |
| ahd_unlock(ahd, &flags); |
| |
| if (retval != SUCCESS) |
| printf("%s: Command abort returning 0x%x\n", |
| ahd_name(ahd), retval); |
| |
| return retval; |
| } |
| |
| static void ahd_linux_set_width(struct scsi_target *starget, int width) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_devinfo devinfo; |
| unsigned long flags; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_lock(ahd, &flags); |
| ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_period(struct scsi_target *starget, int period) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options; |
| unsigned int dt; |
| unsigned long flags; |
| unsigned long offset = tinfo->goal.offset; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: set period to %d\n", ahd_name(ahd), period); |
| #endif |
| if (offset == 0) |
| offset = MAX_OFFSET; |
| |
| if (period < 8) |
| period = 8; |
| if (period < 10) { |
| ppr_options |= MSG_EXT_PPR_DT_REQ; |
| if (period == 8) |
| ppr_options |= MSG_EXT_PPR_IU_REQ; |
| } |
| |
| dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| |
| /* all PPR requests apart from QAS require wide transfers */ |
| if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { |
| if (spi_width(starget) == 0) |
| ppr_options &= MSG_EXT_PPR_QAS_REQ; |
| } |
| |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_offset(struct scsi_target *starget, int offset) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = 0; |
| unsigned int period = 0; |
| unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| unsigned long flags; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: set offset to %d\n", ahd_name(ahd), offset); |
| #endif |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| if (offset != 0) { |
| period = tinfo->goal.period; |
| ppr_options = tinfo->goal.ppr_options; |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| } |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, |
| AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_dt(struct scsi_target *starget, int dt) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_DT_REQ; |
| unsigned int period = tinfo->goal.period; |
| unsigned int width = tinfo->goal.width; |
| unsigned long flags; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: %s DT\n", ahd_name(ahd), |
| dt ? "enabling" : "disabling"); |
| #endif |
| if (dt) { |
| ppr_options |= MSG_EXT_PPR_DT_REQ; |
| if (!width) |
| ahd_linux_set_width(starget, 1); |
| } else { |
| if (period <= 9) |
| period = 10; /* If resetting DT, period must be >= 25ns */ |
| /* IU is invalid without DT set */ |
| ppr_options &= ~MSG_EXT_PPR_IU_REQ; |
| } |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_qas(struct scsi_target *starget, int qas) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_QAS_REQ; |
| unsigned int period = tinfo->goal.period; |
| unsigned int dt; |
| unsigned long flags; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: %s QAS\n", ahd_name(ahd), |
| qas ? "enabling" : "disabling"); |
| #endif |
| |
| if (qas) { |
| ppr_options |= MSG_EXT_PPR_QAS_REQ; |
| } |
| |
| dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_iu(struct scsi_target *starget, int iu) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_IU_REQ; |
| unsigned int period = tinfo->goal.period; |
| unsigned int dt; |
| unsigned long flags; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: %s IU\n", ahd_name(ahd), |
| iu ? "enabling" : "disabling"); |
| #endif |
| |
| if (iu) { |
| ppr_options |= MSG_EXT_PPR_IU_REQ; |
| ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ |
| } |
| |
| dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_RD_STRM; |
| unsigned int period = tinfo->goal.period; |
| unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| unsigned long flags; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: %s Read Streaming\n", ahd_name(ahd), |
| rdstrm ? "enabling" : "disabling"); |
| #endif |
| |
| if (rdstrm) |
| ppr_options |= MSG_EXT_PPR_RD_STRM; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_WR_FLOW; |
| unsigned int period = tinfo->goal.period; |
| unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| unsigned long flags; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: %s Write Flow Control\n", ahd_name(ahd), |
| wrflow ? "enabling" : "disabling"); |
| #endif |
| |
| if (wrflow) |
| ppr_options |= MSG_EXT_PPR_WR_FLOW; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_rti(struct scsi_target *starget, int rti) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_RTI; |
| unsigned int period = tinfo->goal.period; |
| unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| unsigned long flags; |
| |
| if ((ahd->features & AHD_RTI) == 0) { |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: RTI not available\n", ahd_name(ahd)); |
| #endif |
| return; |
| } |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: %s RTI\n", ahd_name(ahd), |
| rti ? "enabling" : "disabling"); |
| #endif |
| |
| if (rti) |
| ppr_options |= MSG_EXT_PPR_RTI; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_PCOMP_EN; |
| unsigned int period = tinfo->goal.period; |
| unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| unsigned long flags; |
| |
| #ifdef AHD_DEBUG |
| if ((ahd_debug & AHD_SHOW_DV) != 0) |
| printf("%s: %s Precompensation\n", ahd_name(ahd), |
| pcomp ? "Enable" : "Disable"); |
| #endif |
| |
| if (pcomp) |
| ppr_options |= MSG_EXT_PPR_PCOMP_EN; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) |
| { |
| struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); |
| struct ahd_tmode_tstate *tstate; |
| struct ahd_initiator_tinfo *tinfo |
| = ahd_fetch_transinfo(ahd, |
| starget->channel + 'A', |
| shost->this_id, starget->id, &tstate); |
| struct ahd_devinfo devinfo; |
| unsigned int ppr_options = tinfo->goal.ppr_options |
| & ~MSG_EXT_PPR_HOLD_MCS; |
| unsigned int period = tinfo->goal.period; |
| unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
| unsigned long flags; |
| |
| if (hold) |
| ppr_options |= MSG_EXT_PPR_HOLD_MCS; |
| |
| ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
| starget->channel + 'A', ROLE_INITIATOR); |
| ahd_find_syncrate(ahd, &period, &ppr_options, |
| dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); |
| |
| ahd_lock(ahd, &flags); |
| ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, |
| ppr_options, AHD_TRANS_GOAL, FALSE); |
| ahd_unlock(ahd, &flags); |
| } |
| |
| |
| |
| static struct spi_function_template ahd_linux_transport_functions = { |
| .set_offset = ahd_linux_set_offset, |
| .show_offset = 1, |
| .set_period = ahd_linux_set_period, |
| .show_period = 1, |
| .set_width = ahd_linux_set_width, |
| .show_width = 1, |
| .set_dt = ahd_linux_set_dt, |
| .show_dt = 1, |
| .set_iu = ahd_linux_set_iu, |
| .show_iu = 1, |
| .set_qas = ahd_linux_set_qas, |
| .show_qas = 1, |
| .set_rd_strm = ahd_linux_set_rd_strm, |
| .show_rd_strm = 1, |
| .set_wr_flow = ahd_linux_set_wr_flow, |
| .show_wr_flow = 1, |
| .set_rti = ahd_linux_set_rti, |
| .show_rti = 1, |
| .set_pcomp_en = ahd_linux_set_pcomp_en, |
| .show_pcomp_en = 1, |
| .set_hold_mcs = ahd_linux_set_hold_mcs, |
| .show_hold_mcs = 1, |
| }; |
| |
| static int __init |
| ahd_linux_init(void) |
| { |
| int error = 0; |
| |
| /* |
| * If we've been passed any parameters, process them now. |
| */ |
| if (aic79xx) |
| aic79xx_setup(aic79xx); |
| |
| ahd_linux_transport_template = |
| spi_attach_transport(&ahd_linux_transport_functions); |
| if (!ahd_linux_transport_template) |
| return -ENODEV; |
| |
| scsi_transport_reserve_target(ahd_linux_transport_template, |
| sizeof(struct ahd_linux_target)); |
| scsi_transport_reserve_device(ahd_linux_transport_template, |
| sizeof(struct ahd_linux_device)); |
| |
| error = ahd_linux_pci_init(); |
| if (error) |
| spi_release_transport(ahd_linux_transport_template); |
| return error; |
| } |
| |
| static void __exit |
| ahd_linux_exit(void) |
| { |
| ahd_linux_pci_exit(); |
| spi_release_transport(ahd_linux_transport_template); |
| } |
| |
| module_init(ahd_linux_init); |
| module_exit(ahd_linux_exit); |