Lines Matching refs:sfp
179 static int sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size);
180 static ssize_t sg_new_read(Sg_fd * sfp, char __user *buf, size_t count,
182 static ssize_t sg_new_write(Sg_fd *sfp, struct file *file,
185 static int sg_common_write(Sg_fd * sfp, Sg_request * srp,
188 static void sg_remove_scat(Sg_fd * sfp, Sg_scatter_hold * schp);
189 static void sg_build_reserve(Sg_fd * sfp, int req_size);
190 static void sg_link_reserve(Sg_fd * sfp, Sg_request * srp, int size);
191 static void sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp);
194 static Sg_request *sg_get_rq_mark(Sg_fd * sfp, int pack_id);
195 static Sg_request *sg_add_request(Sg_fd * sfp);
196 static int sg_remove_request(Sg_fd * sfp, Sg_request * srp);
237 struct sg_fd *sfp = filp->private_data; in sg_allow_access() local
239 if (sfp->parentdp->device->type == TYPE_SCANNER) in sg_allow_access()
290 Sg_fd *sfp; in sg_open() local
351 sfp = sg_add_sfp(sdp); in sg_open()
352 if (IS_ERR(sfp)) { in sg_open()
353 retval = PTR_ERR(sfp); in sg_open()
357 filp->private_data = sfp; in sg_open()
386 Sg_fd *sfp; in sg_release() local
388 if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp))) in sg_release()
394 kref_put(&sfp->f_ref, sg_remove_sfp); in sg_release()
445 Sg_fd *sfp; in sg_read() local
460 if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp))) in sg_read()
465 if (sfp->force_packid) in sg_read()
470 srp = sg_get_rq_mark(sfp, req_pack_id); in sg_read()
476 retval = wait_event_interruptible(sfp->read_wait, in sg_read()
478 (srp = sg_get_rq_mark(sfp, req_pack_id)))); in sg_read()
486 return sg_new_read(sfp, buf, count, srp); in sg_read()
554 sg_remove_request(sfp, srp); in sg_read()
562 sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp) in sg_new_read() argument
598 sg_remove_request(sfp, srp); in sg_new_read()
609 Sg_fd *sfp; in sg_write() local
620 if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp))) in sg_write()
636 return sg_new_write(sfp, filp, buf, count, in sg_write()
645 if (!(srp = sg_add_request(sfp))) { in sg_write()
650 mutex_lock(&sfp->f_mutex); in sg_write()
651 if (sfp->next_cmd_len > 0) { in sg_write()
652 cmd_size = sfp->next_cmd_len; in sg_write()
653 sfp->next_cmd_len = 0; /* reset so only this write() effected */ in sg_write()
659 mutex_unlock(&sfp->f_mutex); in sg_write()
668 sg_remove_request(sfp, srp); in sg_write()
693 sg_remove_request(sfp, srp); in sg_write()
711 k = sg_common_write(sfp, srp, cmnd, sfp->timeout, blocking); in sg_write()
716 sg_new_write(Sg_fd *sfp, struct file *file, const char __user *buf, in sg_new_write() argument
730 sfp->cmd_q = 1; /* when sg_io_hdr seen, set command queuing on */ in sg_new_write()
731 if (!(srp = sg_add_request(sfp))) { in sg_new_write()
732 SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp, in sg_new_write()
739 sg_remove_request(sfp, srp); in sg_new_write()
743 sg_remove_request(sfp, srp); in sg_new_write()
747 if (hp->dxfer_len > sfp->reserve.bufflen) { in sg_new_write()
748 sg_remove_request(sfp, srp); in sg_new_write()
752 sg_remove_request(sfp, srp); in sg_new_write()
755 if (sfp->res_in_use) { in sg_new_write()
756 sg_remove_request(sfp, srp); in sg_new_write()
763 sg_remove_request(sfp, srp); in sg_new_write()
767 sg_remove_request(sfp, srp); in sg_new_write()
771 sg_remove_request(sfp, srp); in sg_new_write()
774 k = sg_common_write(sfp, srp, cmnd, timeout, blocking); in sg_new_write()
783 sg_common_write(Sg_fd * sfp, Sg_request * srp, in sg_common_write() argument
787 Sg_device *sdp = sfp->parentdp; in sg_common_write()
798 SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp, in sg_common_write()
803 sg_remove_request(sfp, srp); in sg_common_write()
809 SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp, in sg_common_write()
812 sg_remove_request(sfp, srp); in sg_common_write()
823 sg_remove_request(sfp, srp); in sg_common_write()
835 kref_get(&sfp->f_ref); /* sg_rq_end_io() does kref_put(). */ in sg_common_write()
840 static int srp_done(Sg_fd *sfp, Sg_request *srp) in srp_done() argument
845 read_lock_irqsave(&sfp->rq_list_lock, flags); in srp_done()
847 read_unlock_irqrestore(&sfp->rq_list_lock, flags); in srp_done()
861 sg_fill_request_table(Sg_fd *sfp, sg_req_info_t *rinfo) in sg_fill_request_table() argument
868 list_for_each_entry(srp, &sfp->rq_list, entry) { in sg_fill_request_table()
921 sg_ioctl_common(struct file *filp, Sg_device *sdp, Sg_fd *sfp, in sg_ioctl_common() argument
939 result = sg_new_write(sfp, filp, p, SZ_SG_IO_HDR, in sg_ioctl_common()
943 result = wait_event_interruptible(sfp->read_wait, in sg_ioctl_common()
944 (srp_done(sfp, srp) || atomic_read(&sdp->detaching))); in sg_ioctl_common()
947 write_lock_irq(&sfp->rq_list_lock); in sg_ioctl_common()
950 write_unlock_irq(&sfp->rq_list_lock); in sg_ioctl_common()
951 result = sg_new_read(sfp, p, SZ_SG_IO_HDR, srp); in sg_ioctl_common()
955 write_unlock_irq(&sfp->rq_list_lock); in sg_ioctl_common()
966 sfp->timeout_user = val; in sg_ioctl_common()
967 sfp->timeout = mult_frac(val, HZ, USER_HZ); in sg_ioctl_common()
972 return sfp->timeout_user; in sg_ioctl_common()
1004 sfp->force_packid = val ? 1 : 0; in sg_ioctl_common()
1007 read_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_ioctl_common()
1008 list_for_each_entry(srp, &sfp->rq_list, entry) { in sg_ioctl_common()
1010 read_unlock_irqrestore(&sfp->rq_list_lock, in sg_ioctl_common()
1015 read_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_ioctl_common()
1018 read_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_ioctl_common()
1020 list_for_each_entry(srp, &sfp->rq_list, entry) { in sg_ioctl_common()
1024 read_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_ioctl_common()
1036 mutex_lock(&sfp->f_mutex); in sg_ioctl_common()
1037 if (val != sfp->reserve.bufflen) { in sg_ioctl_common()
1038 if (sfp->mmap_called || in sg_ioctl_common()
1039 sfp->res_in_use) { in sg_ioctl_common()
1040 mutex_unlock(&sfp->f_mutex); in sg_ioctl_common()
1044 sg_remove_scat(sfp, &sfp->reserve); in sg_ioctl_common()
1045 sg_build_reserve(sfp, val); in sg_ioctl_common()
1047 mutex_unlock(&sfp->f_mutex); in sg_ioctl_common()
1050 val = min_t(int, sfp->reserve.bufflen, in sg_ioctl_common()
1057 sfp->cmd_q = val ? 1 : 0; in sg_ioctl_common()
1060 return put_user((int) sfp->cmd_q, ip); in sg_ioctl_common()
1065 sfp->keep_orphan = val; in sg_ioctl_common()
1068 return put_user((int) sfp->keep_orphan, ip); in sg_ioctl_common()
1075 sfp->next_cmd_len = (val > 0) ? val : 0; in sg_ioctl_common()
1091 read_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_ioctl_common()
1092 sg_fill_request_table(sfp, rinfo); in sg_ioctl_common()
1093 read_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_ioctl_common()
1159 Sg_fd *sfp; in sg_ioctl() local
1162 if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp))) in sg_ioctl()
1165 ret = sg_ioctl_common(filp, sdp, sfp, cmd_in, p); in sg_ioctl()
1176 Sg_fd *sfp; in sg_poll() local
1181 sfp = filp->private_data; in sg_poll()
1182 if (!sfp) in sg_poll()
1184 sdp = sfp->parentdp; in sg_poll()
1187 poll_wait(filp, &sfp->read_wait, wait); in sg_poll()
1188 read_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_poll()
1189 list_for_each_entry(srp, &sfp->rq_list, entry) { in sg_poll()
1195 read_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_poll()
1199 else if (!sfp->cmd_q) { in sg_poll()
1213 Sg_fd *sfp; in sg_fasync() local
1215 if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp))) in sg_fasync()
1220 return fasync_helper(fd, filp, mode, &sfp->async_qp); in sg_fasync()
1227 Sg_fd *sfp; in sg_vma_fault() local
1232 if ((NULL == vma) || (!(sfp = (Sg_fd *) vma->vm_private_data))) in sg_vma_fault()
1234 rsv_schp = &sfp->reserve; in sg_vma_fault()
1238 SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sfp->parentdp, in sg_vma_fault()
1267 Sg_fd *sfp; in sg_mmap() local
1273 if ((!filp) || (!vma) || (!(sfp = (Sg_fd *) filp->private_data))) in sg_mmap()
1276 SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sfp->parentdp, in sg_mmap()
1281 rsv_schp = &sfp->reserve; in sg_mmap()
1282 mutex_lock(&sfp->f_mutex); in sg_mmap()
1296 sfp->mmap_called = 1; in sg_mmap()
1298 vma->vm_private_data = sfp; in sg_mmap()
1301 mutex_unlock(&sfp->f_mutex); in sg_mmap()
1309 struct sg_fd *sfp = srp->parentfp; in sg_rq_end_io_usercontext() local
1312 sg_remove_request(sfp, srp); in sg_rq_end_io_usercontext()
1313 kref_put(&sfp->f_ref, sg_remove_sfp); in sg_rq_end_io_usercontext()
1326 Sg_fd *sfp; in sg_rq_end_io() local
1335 sfp = srp->parentfp; in sg_rq_end_io()
1336 if (WARN_ON(sfp == NULL)) in sg_rq_end_io()
1339 sdp = sfp->parentdp; in sg_rq_end_io()
1395 write_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_rq_end_io()
1397 if (sfp->keep_orphan) in sg_rq_end_io()
1403 write_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_rq_end_io()
1409 wake_up_interruptible(&sfp->read_wait); in sg_rq_end_io()
1410 kill_fasync(&sfp->async_qp, SIGPOLL, POLL_IN); in sg_rq_end_io()
1411 kref_put(&sfp->f_ref, sg_remove_sfp); in sg_rq_end_io()
1592 Sg_fd *sfp; in sg_remove_device() local
1606 list_for_each_entry(sfp, &sdp->sfds, sfd_siblings) { in sg_remove_device()
1607 wake_up_interruptible_all(&sfp->read_wait); in sg_remove_device()
1608 kill_fasync(&sfp->async_qp, SIGPOLL, POLL_HUP); in sg_remove_device()
1694 Sg_fd *sfp = srp->parentfp; in sg_start_req() local
1700 Sg_scatter_hold *rsv_schp = &sfp->reserve; in sg_start_req()
1701 struct request_queue *q = sfp->parentdp->device->request_queue; in sg_start_req()
1706 SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp, in sg_start_req()
1755 mutex_lock(&sfp->f_mutex); in sg_start_req()
1757 !sfp->res_in_use) { in sg_start_req()
1758 sfp->res_in_use = 1; in sg_start_req()
1759 sg_link_reserve(sfp, srp, dxfer_len); in sg_start_req()
1764 mutex_unlock(&sfp->f_mutex); in sg_start_req()
1767 res = sg_build_indirect(req_schp, sfp, dxfer_len); in sg_start_req()
1769 mutex_unlock(&sfp->f_mutex); in sg_start_req()
1773 mutex_unlock(&sfp->f_mutex); in sg_start_req()
1822 Sg_fd *sfp = srp->parentfp; in sg_finish_rem_req() local
1825 SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp, in sg_finish_rem_req()
1837 sg_unlink_reserve(sfp, srp); in sg_finish_rem_req()
1839 sg_remove_scat(sfp, req_schp); in sg_finish_rem_req()
1845 sg_build_sgat(Sg_scatter_hold * schp, const Sg_fd * sfp, int tablesize) in sg_build_sgat() argument
1858 sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size) in sg_build_indirect() argument
1861 int sg_tablesize = sfp->parentdp->sg_tablesize; in sg_build_indirect()
1871 SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp, in sg_build_indirect()
1876 mx_sc_elems = sg_build_sgat(schp, sfp, sg_tablesize); in sg_build_indirect()
1910 SCSI_LOG_TIMEOUT(5, sg_printk(KERN_INFO, sfp->parentdp, in sg_build_indirect()
1917 SCSI_LOG_TIMEOUT(5, sg_printk(KERN_INFO, sfp->parentdp, in sg_build_indirect()
1936 sg_remove_scat(Sg_fd * sfp, Sg_scatter_hold * schp) in sg_remove_scat() argument
1938 SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp, in sg_remove_scat()
1946 sg_printk(KERN_INFO, sfp->parentdp, in sg_remove_scat()
1992 sg_build_reserve(Sg_fd * sfp, int req_size) in sg_build_reserve() argument
1994 Sg_scatter_hold *schp = &sfp->reserve; in sg_build_reserve()
1996 SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp, in sg_build_reserve()
2001 if (0 == sg_build_indirect(schp, sfp, req_size)) in sg_build_reserve()
2004 sg_remove_scat(sfp, schp); in sg_build_reserve()
2010 sg_link_reserve(Sg_fd * sfp, Sg_request * srp, int size) in sg_link_reserve() argument
2013 Sg_scatter_hold *rsv_schp = &sfp->reserve; in sg_link_reserve()
2017 SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp, in sg_link_reserve()
2036 SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp, in sg_link_reserve()
2041 sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp) in sg_unlink_reserve() argument
2055 sfp->res_in_use = 0; in sg_unlink_reserve()
2059 sg_get_rq_mark(Sg_fd * sfp, int pack_id) in sg_get_rq_mark() argument
2064 write_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_get_rq_mark()
2065 list_for_each_entry(resp, &sfp->rq_list, entry) { in sg_get_rq_mark()
2070 write_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_get_rq_mark()
2074 write_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_get_rq_mark()
2080 sg_add_request(Sg_fd * sfp) in sg_add_request() argument
2084 Sg_request *rp = sfp->req_arr; in sg_add_request()
2086 write_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_add_request()
2087 if (!list_empty(&sfp->rq_list)) { in sg_add_request()
2088 if (!sfp->cmd_q) in sg_add_request()
2099 rp->parentfp = sfp; in sg_add_request()
2101 list_add_tail(&rp->entry, &sfp->rq_list); in sg_add_request()
2102 write_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_add_request()
2105 write_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_add_request()
2111 sg_remove_request(Sg_fd * sfp, Sg_request * srp) in sg_remove_request() argument
2116 if (!sfp || !srp || list_empty(&sfp->rq_list)) in sg_remove_request()
2118 write_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_remove_request()
2124 write_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_remove_request()
2131 Sg_fd *sfp; in sg_add_sfp() local
2135 sfp = kzalloc(sizeof(*sfp), GFP_ATOMIC | __GFP_NOWARN); in sg_add_sfp()
2136 if (!sfp) in sg_add_sfp()
2139 init_waitqueue_head(&sfp->read_wait); in sg_add_sfp()
2140 rwlock_init(&sfp->rq_list_lock); in sg_add_sfp()
2141 INIT_LIST_HEAD(&sfp->rq_list); in sg_add_sfp()
2142 kref_init(&sfp->f_ref); in sg_add_sfp()
2143 mutex_init(&sfp->f_mutex); in sg_add_sfp()
2144 sfp->timeout = SG_DEFAULT_TIMEOUT; in sg_add_sfp()
2145 sfp->timeout_user = SG_DEFAULT_TIMEOUT_USER; in sg_add_sfp()
2146 sfp->force_packid = SG_DEF_FORCE_PACK_ID; in sg_add_sfp()
2147 sfp->cmd_q = SG_DEF_COMMAND_Q; in sg_add_sfp()
2148 sfp->keep_orphan = SG_DEF_KEEP_ORPHAN; in sg_add_sfp()
2149 sfp->parentdp = sdp; in sg_add_sfp()
2153 kfree(sfp); in sg_add_sfp()
2156 list_add_tail(&sfp->sfd_siblings, &sdp->sfds); in sg_add_sfp()
2159 "sg_add_sfp: sfp=0x%p\n", sfp)); in sg_add_sfp()
2165 sg_build_reserve(sfp, bufflen); in sg_add_sfp()
2168 sfp->reserve.bufflen, in sg_add_sfp()
2169 sfp->reserve.k_use_sg)); in sg_add_sfp()
2173 return sfp; in sg_add_sfp()
2179 struct sg_fd *sfp = container_of(work, struct sg_fd, ew.work); in sg_remove_sfp_usercontext() local
2180 struct sg_device *sdp = sfp->parentdp; in sg_remove_sfp_usercontext()
2185 write_lock_irqsave(&sfp->rq_list_lock, iflags); in sg_remove_sfp_usercontext()
2186 while (!list_empty(&sfp->rq_list)) { in sg_remove_sfp_usercontext()
2187 srp = list_first_entry(&sfp->rq_list, Sg_request, entry); in sg_remove_sfp_usercontext()
2192 write_unlock_irqrestore(&sfp->rq_list_lock, iflags); in sg_remove_sfp_usercontext()
2194 if (sfp->reserve.bufflen > 0) { in sg_remove_sfp_usercontext()
2197 (int) sfp->reserve.bufflen, in sg_remove_sfp_usercontext()
2198 (int) sfp->reserve.k_use_sg)); in sg_remove_sfp_usercontext()
2199 sg_remove_scat(sfp, &sfp->reserve); in sg_remove_sfp_usercontext()
2203 "sg_remove_sfp: sfp=0x%p\n", sfp)); in sg_remove_sfp_usercontext()
2204 kfree(sfp); in sg_remove_sfp_usercontext()
2214 struct sg_fd *sfp = container_of(kref, struct sg_fd, f_ref); in sg_remove_sfp() local
2215 struct sg_device *sdp = sfp->parentdp; in sg_remove_sfp()
2219 list_del(&sfp->sfd_siblings); in sg_remove_sfp()
2222 INIT_WORK(&sfp->ew.work, sg_remove_sfp_usercontext); in sg_remove_sfp()
2223 schedule_work(&sfp->ew.work); in sg_remove_sfp()