Date: Thu, 26 Jan 2012 18:09:29 +0000 (UTC) From: "Kenneth D. Merry" <ken@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r230590 - in head: sbin/camcontrol sys/cam sys/cam/scsi sys/sys usr.sbin/mptutil Message-ID: <201201261809.q0QI9TI7099632@svn.freebsd.org>
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Author: ken Date: Thu Jan 26 18:09:28 2012 New Revision: 230590 URL: http://svn.freebsd.org/changeset/base/230590 Log: Add CAM infrastructure to allow reporting when a drive's long read capacity data changes. cam_ccb.h: Add a new advanced information type, CDAI_TYPE_RCAPLONG, for long read capacity data. cam_xpt_internal.h: Add a read capacity data pointer and length to struct cam_ed. cam_xpt.c: Free the read capacity buffer when a device goes away. While we're here, make sure we don't leak memory for other malloced fields in struct cam_ed. scsi_all.c: Update the scsi_read_capacity_16() to take a uint8_t * and a length instead of just a pointer to the parameter data structure. This will hopefully make this function somewhat immune to future changes in the parameter data. scsi_all.h: Add some extra bit definitions to struct scsi_read_capacity_data_long, and bump up the structure size to the full size specified by SBC-3. Change the prototype for scsi_read_capacity_16(). scsi_da.c: Register changes in read capacity data with the transport layer. This allows the transport layer to send out an async notification to interested parties. Update the dasetgeom() API. Use scsi_extract_sense_len() instead of scsi_extract_sense(). scsi_xpt.c: Add support for the new CDAI_TYPE_RCAPLONG advanced information type. Make sure we set the physpath pointer to NULL after freeing it. This allows blindly freeing it in the struct cam_ed destructor. sys/param.h: Bump __FreeBSD_version from 1000005 to 1000006 to make it easier for third party drivers to determine that the read capacity data async notification is available. camcontrol.c, mptutil/mpt_cam.c: Update these for the new scsi_read_capacity_16() argument structure. Sponsored by: Spectra Logic Modified: head/sbin/camcontrol/camcontrol.c head/sys/cam/cam_ccb.h head/sys/cam/cam_xpt.c head/sys/cam/cam_xpt_internal.h head/sys/cam/scsi/scsi_all.c head/sys/cam/scsi/scsi_all.h head/sys/cam/scsi/scsi_da.c head/sys/cam/scsi/scsi_xpt.c head/sys/sys/param.h head/usr.sbin/mptutil/mpt_cam.c Modified: head/sbin/camcontrol/camcontrol.c ============================================================================== --- head/sbin/camcontrol/camcontrol.c Thu Jan 26 17:28:33 2012 (r230589) +++ head/sbin/camcontrol/camcontrol.c Thu Jan 26 18:09:28 2012 (r230590) @@ -4232,7 +4232,8 @@ scsireadcapacity(struct cam_device *devi /*lba*/ 0, /*reladdr*/ 0, /*pmi*/ 0, - &rcaplong, + /*rcap_buf*/ (uint8_t *)&rcaplong, + /*rcap_buf_len*/ sizeof(rcaplong), /*sense_len*/ SSD_FULL_SIZE, /*timeout*/ timeout ? timeout : 5000); Modified: head/sys/cam/cam_ccb.h ============================================================================== --- head/sys/cam/cam_ccb.h Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/cam/cam_ccb.h Thu Jan 26 18:09:28 2012 (r230590) @@ -1118,6 +1118,7 @@ struct ccb_dev_advinfo { #define CDAI_TYPE_SCSI_DEVID 1 #define CDAI_TYPE_SERIAL_NUM 2 #define CDAI_TYPE_PHYS_PATH 3 +#define CDAI_TYPE_RCAPLONG 4 off_t bufsiz; /* IN: Size of external buffer */ #define CAM_SCSI_DEVID_MAXLEN 65536 /* length in buffer is an uint16_t */ off_t provsiz; /* OUT: Size required/used */ Modified: head/sys/cam/cam_xpt.c ============================================================================== --- head/sys/cam/cam_xpt.c Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/cam/cam_xpt.c Thu Jan 26 18:09:28 2012 (r230590) @@ -4588,6 +4588,17 @@ xpt_release_device(struct cam_ed *device cam_devq_resize(devq, devq->alloc_queue.array_size - 1); camq_fini(&device->drvq); cam_ccbq_fini(&device->ccbq); + /* + * Free allocated memory. free(9) does nothing if the + * supplied pointer is NULL, so it is safe to call without + * checking. + */ + free(device->supported_vpds, M_CAMXPT); + free(device->device_id, M_CAMXPT); + free(device->physpath, M_CAMXPT); + free(device->rcap_buf, M_CAMXPT); + free(device->serial_num, M_CAMXPT); + xpt_release_target(device->target); free(device, M_CAMXPT); } else Modified: head/sys/cam/cam_xpt_internal.h ============================================================================== --- head/sys/cam/cam_xpt_internal.h Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/cam/cam_xpt_internal.h Thu Jan 26 18:09:28 2012 (r230590) @@ -99,6 +99,8 @@ struct cam_ed { uint8_t *device_id; uint8_t physpath_len; uint8_t *physpath; /* physical path string form */ + uint32_t rcap_len; + uint8_t *rcap_buf; struct ata_params ident_data; u_int8_t inq_flags; /* * Current settings for inquiry flags. Modified: head/sys/cam/scsi/scsi_all.c ============================================================================== --- head/sys/cam/scsi/scsi_all.c Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/cam/scsi/scsi_all.c Thu Jan 26 18:09:28 2012 (r230590) @@ -5325,8 +5325,8 @@ void scsi_read_capacity_16(struct ccb_scsiio *csio, uint32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), uint8_t tag_action, uint64_t lba, int reladr, int pmi, - struct scsi_read_capacity_data_long *rcap_buf, - uint8_t sense_len, uint32_t timeout) + uint8_t *rcap_buf, int rcap_buf_len, uint8_t sense_len, + uint32_t timeout) { struct scsi_read_capacity_16 *scsi_cmd; @@ -5337,7 +5337,7 @@ scsi_read_capacity_16(struct ccb_scsiio /*flags*/CAM_DIR_IN, tag_action, /*data_ptr*/(u_int8_t *)rcap_buf, - /*dxfer_len*/sizeof(*rcap_buf), + /*dxfer_len*/rcap_buf_len, sense_len, sizeof(*scsi_cmd), timeout); @@ -5346,7 +5346,7 @@ scsi_read_capacity_16(struct ccb_scsiio scsi_cmd->opcode = SERVICE_ACTION_IN; scsi_cmd->service_action = SRC16_SERVICE_ACTION; scsi_u64to8b(lba, scsi_cmd->addr); - scsi_ulto4b(sizeof(*rcap_buf), scsi_cmd->alloc_len); + scsi_ulto4b(rcap_buf_len, scsi_cmd->alloc_len); if (pmi) reladr |= SRC16_PMI; if (reladr) Modified: head/sys/cam/scsi/scsi_all.h ============================================================================== --- head/sys/cam/scsi/scsi_all.h Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/cam/scsi/scsi_all.h Thu Jan 26 18:09:28 2012 (r230590) @@ -1437,15 +1437,26 @@ struct scsi_read_capacity_data_long uint8_t length[4]; #define SRC16_PROT_EN 0x01 #define SRC16_P_TYPE 0x0e +#define SRC16_PTYPE_1 0x00 +#define SRC16_PTYPE_2 0x02 +#define SRC16_PTYPE_3 0x04 uint8_t prot; #define SRC16_LBPPBE 0x0f #define SRC16_PI_EXPONENT 0xf0 #define SRC16_PI_EXPONENT_SHIFT 4 uint8_t prot_lbppbe; -#define SRC16_LALBA 0x3fff -#define SRC16_LBPRZ 0x4000 -#define SRC16_LBPME 0x8000 +#define SRC16_LALBA 0x3f +#define SRC16_LBPRZ 0x40 +#define SRC16_LBPME 0x80 +/* + * Alternate versions of these macros that are intended for use on a 16-bit + * version of the lalba_lbp field instead of the array of 2 8 bit numbers. + */ +#define SRC16_LALBA_A 0x3fff +#define SRC16_LBPRZ_A 0x4000 +#define SRC16_LBPME_A 0x8000 uint8_t lalba_lbp[2]; + uint8_t reserved[16]; }; struct scsi_report_luns @@ -2293,9 +2304,8 @@ void scsi_read_capacity_16(struct ccb_s void (*cbfcnp)(struct cam_periph *, union ccb *), uint8_t tag_action, uint64_t lba, int reladr, int pmi, - struct scsi_read_capacity_data_long - *rcap_buf, uint8_t sense_len, - uint32_t timeout); + uint8_t *rcap_buf, int rcap_buf_len, + uint8_t sense_len, uint32_t timeout); void scsi_report_luns(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, Modified: head/sys/cam/scsi/scsi_da.c ============================================================================== --- head/sys/cam/scsi/scsi_da.c Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/cam/scsi/scsi_da.c Thu Jan 26 18:09:28 2012 (r230590) @@ -160,6 +160,7 @@ struct da_softc { struct callout sendordered_c; uint64_t wwpn; uint8_t unmap_buf[UNMAP_MAX_RANGES * 16 + 8]; + struct scsi_read_capacity_data_long rcaplong; }; struct da_quirk_entry { @@ -830,7 +831,9 @@ static int daerror(union ccb *ccb, u_i static void daprevent(struct cam_periph *periph, int action); static int dagetcapacity(struct cam_periph *periph); static void dasetgeom(struct cam_periph *periph, uint32_t block_len, - uint64_t maxsector, u_int lbppbe, u_int lalba); + uint64_t maxsector, + struct scsi_read_capacity_data_long *rcaplong, + size_t rcap_size); static timeout_t dasendorderedtag; static void dashutdown(void *arg, int howto); @@ -1948,7 +1951,8 @@ out: /*lba*/ 0, /*reladr*/ 0, /*pmi*/ 0, - rcaplong, + /*rcap_buf*/ (uint8_t *)rcaplong, + /*rcap_buf_len*/ sizeof(*rcaplong), /*sense_len*/ SSD_FULL_SIZE, /*timeout*/ 60000); start_ccb->ccb_h.ccb_bp = NULL; @@ -2227,10 +2231,15 @@ dadone(struct cam_periph *periph, union announce_buf[0] = '\0'; cam_periph_invalidate(periph); } else { + /* + * We pass rcaplong into dasetgeom(), + * because it will only use it if it is + * non-NULL. + */ dasetgeom(periph, block_size, maxsector, - lbppbe, lalba & SRC16_LALBA); - if ((lalba & SRC16_LBPME) && - softc->delete_method == DA_DELETE_NONE) + rcaplong, sizeof(*rcaplong)); + if ((lalba & SRC16_LBPME_A) + && softc->delete_method == DA_DELETE_NONE) softc->delete_method = DA_DELETE_UNMAP; dp = &softc->params; snprintf(announce_buf, sizeof(announce_buf), @@ -2504,6 +2513,7 @@ dagetcapacity(struct cam_periph *periph) lalba = 0; error = 0; rc16failed = 0; + rcaplong = NULL; sense_flags = SF_RETRY_UA; if (softc->flags & DA_FLAG_PACK_REMOVABLE) sense_flags |= SF_NO_PRINT; @@ -2521,39 +2531,47 @@ dagetcapacity(struct cam_periph *periph) /* Try READ CAPACITY(16) first if we think it should work. */ if (softc->flags & DA_FLAG_CAN_RC16) { scsi_read_capacity_16(&ccb->csio, - /*retries*/ 4, - /*cbfcnp*/ dadone, - /*tag_action*/ MSG_SIMPLE_Q_TAG, - /*lba*/ 0, - /*reladr*/ 0, - /*pmi*/ 0, - rcaplong, - /*sense_len*/ SSD_FULL_SIZE, - /*timeout*/ 60000); + /*retries*/ 4, + /*cbfcnp*/ dadone, + /*tag_action*/ MSG_SIMPLE_Q_TAG, + /*lba*/ 0, + /*reladr*/ 0, + /*pmi*/ 0, + /*rcap_buf*/ (uint8_t *)rcaplong, + /*rcap_buf_len*/ sizeof(*rcaplong), + /*sense_len*/ SSD_FULL_SIZE, + /*timeout*/ 60000); ccb->ccb_h.ccb_bp = NULL; error = cam_periph_runccb(ccb, daerror, - /*cam_flags*/CAM_RETRY_SELTO, - sense_flags, - softc->disk->d_devstat); + /*cam_flags*/CAM_RETRY_SELTO, + sense_flags, softc->disk->d_devstat); if (error == 0) goto rc16ok; /* If we got ILLEGAL REQUEST, do not prefer RC16 any more. */ - if ((ccb->ccb_h.status & CAM_STATUS_MASK) == - CAM_REQ_INVALID) { + if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) { softc->flags &= ~DA_FLAG_CAN_RC16; } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) == - CAM_SCSI_STATUS_ERROR) && - (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) && - (ccb->ccb_h.status & CAM_AUTOSNS_VALID) && - ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0) && - ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) { + CAM_SCSI_STATUS_ERROR) + && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) + && (ccb->ccb_h.status & CAM_AUTOSNS_VALID) + && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0) + && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) { int sense_key, error_code, asc, ascq; - scsi_extract_sense(&ccb->csio.sense_data, - &error_code, &sense_key, &asc, &ascq); - if (sense_key == SSD_KEY_ILLEGAL_REQUEST) + scsi_extract_sense_len(&ccb->csio.sense_data, + ccb->csio.sense_len - + ccb->csio.sense_resid, + &error_code, &sense_key, + &asc, &ascq, /*show_errors*/1); + /* + * If we don't have enough sense to get the sense + * key, or if it's illegal request, turn off + * READ CAPACITY (16). + */ + if ((sense_key == -1) + || (sense_key == SSD_KEY_ILLEGAL_REQUEST)) softc->flags &= ~DA_FLAG_CAN_RC16; } rc16failed = 1; @@ -2590,7 +2608,8 @@ dagetcapacity(struct cam_periph *periph) /*lba*/ 0, /*reladr*/ 0, /*pmi*/ 0, - rcaplong, + /*rcap_buf*/ (uint8_t *)rcaplong, + /*rcap_buf_len*/ sizeof(*rcaplong), /*sense_len*/ SSD_FULL_SIZE, /*timeout*/ 60000); ccb->ccb_h.ccb_bp = NULL; @@ -2617,9 +2636,9 @@ done: error = EINVAL; } else { dasetgeom(periph, block_len, maxsector, - lbppbe, lalba & SRC16_LALBA); - if ((lalba & SRC16_LBPME) && - softc->delete_method == DA_DELETE_NONE) + rcaplong, sizeof(*rcaplong)); + if ((lalba & SRC16_LBPME) + && softc->delete_method == DA_DELETE_NONE) softc->delete_method = DA_DELETE_UNMAP; } } @@ -2633,17 +2652,27 @@ done: static void dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector, - u_int lbppbe, u_int lalba) + struct scsi_read_capacity_data_long *rcaplong, size_t rcap_len) { struct ccb_calc_geometry ccg; struct da_softc *softc; struct disk_params *dp; + u_int lbppbe, lalba; softc = (struct da_softc *)periph->softc; dp = &softc->params; dp->secsize = block_len; dp->sectors = maxsector + 1; + if (rcaplong != NULL) { + lbppbe = rcaplong->prot_lbppbe & SRC16_LBPPBE; + lalba = scsi_2btoul(rcaplong->lalba_lbp); + lalba &= SRC16_LALBA_A; + } else { + lbppbe = 0; + lalba = 0; + } + if (lbppbe > 0) { dp->stripesize = block_len << lbppbe; dp->stripeoffset = (dp->stripesize - block_len * lalba) % @@ -2688,6 +2717,38 @@ dasetgeom(struct cam_periph *periph, uin dp->secs_per_track = ccg.secs_per_track; dp->cylinders = ccg.cylinders; } + + /* + * If the user supplied a read capacity buffer, and if it is + * different than the previous buffer, update the data in the EDT. + * If it's the same, we don't bother. This avoids sending an + * update every time someone opens this device. + */ + if ((rcaplong != NULL) + && (bcmp(rcaplong, &softc->rcaplong, + min(sizeof(softc->rcaplong), rcap_len)) != 0)) { + struct ccb_dev_advinfo cdai; + + xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); + cdai.ccb_h.func_code = XPT_DEV_ADVINFO; + cdai.buftype = CDAI_TYPE_RCAPLONG; + cdai.flags |= CDAI_FLAG_STORE; + cdai.bufsiz = rcap_len; + cdai.buf = (uint8_t *)rcaplong; + xpt_action((union ccb *)&cdai); + if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); + if (cdai.ccb_h.status != CAM_REQ_CMP) { + xpt_print(periph->path, "%s: failed to set read " + "capacity advinfo\n", __func__); + /* Use cam_error_print() to decode the status */ + cam_error_print((union ccb *)&cdai, CAM_ESF_CAM_STATUS, + CAM_EPF_ALL); + } else { + bcopy(rcaplong, &softc->rcaplong, + min(sizeof(softc->rcaplong), rcap_len)); + } + } } static void Modified: head/sys/cam/scsi/scsi_xpt.c ============================================================================== --- head/sys/cam/scsi/scsi_xpt.c Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/cam/scsi/scsi_xpt.c Thu Jan 26 18:09:28 2012 (r230590) @@ -2468,8 +2468,10 @@ scsi_dev_advinfo(union ccb *start_ccb) break; case CDAI_TYPE_PHYS_PATH: if (cdai->flags & CDAI_FLAG_STORE) { - if (device->physpath != NULL) + if (device->physpath != NULL) { free(device->physpath, M_CAMXPT); + device->physpath = NULL; + } device->physpath_len = cdai->bufsiz; /* Clear existing buffer if zero length */ if (cdai->bufsiz == 0) @@ -2490,6 +2492,36 @@ scsi_dev_advinfo(union ccb *start_ccb) memcpy(cdai->buf, device->physpath, amt); } break; + case CDAI_TYPE_RCAPLONG: + if (cdai->flags & CDAI_FLAG_STORE) { + if (device->rcap_buf != NULL) { + free(device->rcap_buf, M_CAMXPT); + device->rcap_buf = NULL; + } + + device->rcap_len = cdai->bufsiz; + /* Clear existing buffer if zero length */ + if (cdai->bufsiz == 0) + break; + + device->rcap_buf = malloc(cdai->bufsiz, M_CAMXPT, + M_NOWAIT); + if (device->rcap_buf == NULL) { + start_ccb->ccb_h.status = CAM_REQ_ABORTED; + return; + } + + memcpy(device->rcap_buf, cdai->buf, cdai->bufsiz); + } else { + cdai->provsiz = device->rcap_len; + if (device->rcap_len == 0) + break; + amt = device->rcap_len; + if (cdai->provsiz > cdai->bufsiz) + amt = cdai->bufsiz; + memcpy(cdai->buf, device->rcap_buf, amt); + } + break; default: return; } Modified: head/sys/sys/param.h ============================================================================== --- head/sys/sys/param.h Thu Jan 26 17:28:33 2012 (r230589) +++ head/sys/sys/param.h Thu Jan 26 18:09:28 2012 (r230590) @@ -58,7 +58,7 @@ * in the range 5 to 9. */ #undef __FreeBSD_version -#define __FreeBSD_version 1000005 /* Master, propagated to newvers */ +#define __FreeBSD_version 1000006 /* Master, propagated to newvers */ /* * __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD, Modified: head/usr.sbin/mptutil/mpt_cam.c ============================================================================== --- head/usr.sbin/mptutil/mpt_cam.c Thu Jan 26 17:28:33 2012 (r230589) +++ head/usr.sbin/mptutil/mpt_cam.c Thu Jan 26 18:09:28 2012 (r230590) @@ -277,7 +277,7 @@ fetch_scsi_capacity(struct cam_device *d sizeof(struct ccb_hdr)); scsi_read_capacity_16(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 0, 0, 0, - &rcaplong, SSD_FULL_SIZE, 5000); + (uint8_t *)&rcaplong, sizeof(rcaplong), SSD_FULL_SIZE, 5000); /* Disable freezing the device queue */ ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
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