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/linux-6.12.1/drivers/s390/char/
Dtape.h303 tape_ccw_cc(struct ccw1 *ccw, __u8 cmd_code, __u16 memsize, void *cda) in tape_ccw_cc() argument
305 ccw->cmd_code = cmd_code; in tape_ccw_cc()
306 ccw->flags = CCW_FLAG_CC; in tape_ccw_cc()
307 ccw->count = memsize; in tape_ccw_cc()
308 ccw->cda = 0; in tape_ccw_cc()
310 ccw->cda = virt_to_dma32(cda); in tape_ccw_cc()
311 return ccw + 1; in tape_ccw_cc()
315 tape_ccw_end(struct ccw1 *ccw, __u8 cmd_code, __u16 memsize, void *cda) in tape_ccw_end() argument
317 ccw->cmd_code = cmd_code; in tape_ccw_end()
318 ccw->flags = 0; in tape_ccw_end()
[all …]
Dtape_std.c269 struct ccw1 *ccw; in tape_std_mtfsf() local
276 ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, in tape_std_mtfsf()
278 ccw = tape_ccw_repeat(ccw, FORSPACEFILE, mt_count); in tape_std_mtfsf()
279 ccw = tape_ccw_end(ccw, NOP, 0, NULL); in tape_std_mtfsf()
293 struct ccw1 *ccw; in tape_std_mtfsr() local
301 ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, in tape_std_mtfsr()
303 ccw = tape_ccw_repeat(ccw, FORSPACEBLOCK, mt_count); in tape_std_mtfsr()
304 ccw = tape_ccw_end(ccw, NOP, 0, NULL); in tape_std_mtfsr()
325 struct ccw1 *ccw; in tape_std_mtbsr() local
333 ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, in tape_std_mtbsr()
[all …]
Draw3270.c166 rq->ccw.cda = virt_to_dma32(rq->buffer); in raw3270_request_alloc()
167 rq->ccw.flags = CCW_FLAG_SLI; in raw3270_request_alloc()
190 rq->ccw.cmd_code = 0; in raw3270_request_reset()
191 rq->ccw.count = 0; in raw3270_request_reset()
193 rq->ccw.cda = virt_to_dma32(rq->buffer); in raw3270_request_reset()
194 rq->ccw.flags = CCW_FLAG_SLI; in raw3270_request_reset()
206 rq->ccw.cmd_code = cmd; in raw3270_request_set_cmd()
215 if (size + rq->ccw.count > rq->size) in raw3270_request_add_data()
217 memcpy(rq->buffer + rq->ccw.count, data, size); in raw3270_request_add_data()
218 rq->ccw.count += size; in raw3270_request_add_data()
[all …]
Dcon3215.c146 struct ccw1 *ccw; in raw3215_mk_read_req() local
158 ccw = req->ccws; in raw3215_mk_read_req()
159 ccw->cmd_code = 0x0A; /* read inquiry */ in raw3215_mk_read_req()
160 ccw->flags = 0x20; /* ignore incorrect length */ in raw3215_mk_read_req()
161 ccw->count = 160; in raw3215_mk_read_req()
162 ccw->cda = virt_to_dma32(raw->inbuf); in raw3215_mk_read_req()
174 struct ccw1 *ccw; in raw3215_mk_write_req() local
191 ccw = req->ccws; in raw3215_mk_write_req()
217 if (ccw > req->ccws) in raw3215_mk_write_req()
218 ccw[-1].flags |= 0x40; /* use command chaining */ in raw3215_mk_write_req()
[all …]
/linux-6.12.1/drivers/s390/virtio/
Dvirtio_ccw.c360 struct ccw1 *ccw, __u32 intparm) in ccw_io_helper() argument
369 ret = ccw_device_start(vcdev->cdev, ccw, intparm, 0, 0); in ccw_io_helper()
385 struct ccw1 *ccw) in virtio_ccw_drop_indicator() argument
395 &ccw->cda); in virtio_ccw_drop_indicator()
401 ccw->cmd_code = CCW_CMD_SET_IND_ADAPTER; in virtio_ccw_drop_indicator()
402 ccw->count = sizeof(*thinint_area); in virtio_ccw_drop_indicator()
407 &ccw->cda); in virtio_ccw_drop_indicator()
411 ccw->cmd_code = CCW_CMD_SET_IND; in virtio_ccw_drop_indicator()
412 ccw->count = sizeof(*indicatorp); in virtio_ccw_drop_indicator()
416 ccw->flags = 0; in virtio_ccw_drop_indicator()
[all …]
/linux-6.12.1/drivers/s390/block/
Ddasd_fba.c51 MODULE_DEVICE_TABLE(ccw, dasd_fba_ids);
76 define_extent(struct ccw1 * ccw, struct DE_fba_data *data, int rw, in define_extent() argument
79 ccw->cmd_code = DASD_FBA_CCW_DEFINE_EXTENT; in define_extent()
80 ccw->flags = 0; in define_extent()
81 ccw->count = 16; in define_extent()
82 ccw->cda = virt_to_dma32(data); in define_extent()
96 locate_record(struct ccw1 * ccw, struct LO_fba_data *data, int rw, in locate_record() argument
99 ccw->cmd_code = DASD_FBA_CCW_LOCATE; in locate_record()
100 ccw->flags = 0; in locate_record()
101 ccw->count = 8; in locate_record()
[all …]
Ddasd_eckd.c68 MODULE_DEVICE_TABLE(ccw, dasd_eckd_ids);
81 struct ccw1 ccw; member
88 struct ccw1 ccw[2]; member
104 struct ccw1 ccw; member
246 static int set_timestamp(struct ccw1 *ccw, struct DE_eckd_data *data, in set_timestamp() argument
265 if (ccw) { in set_timestamp()
266 ccw->count = sizeof(struct DE_eckd_data); in set_timestamp()
267 ccw->flags |= CCW_FLAG_SLI; in set_timestamp()
274 define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk, in define_extent() argument
283 if (ccw) { in define_extent()
[all …]
Ddasd_3990_erp.c197 struct ccw1 *ccw; in dasd_3990_erp_DCTL() local
215 ccw = dctl_cqr->cpaddr; in dasd_3990_erp_DCTL()
216 memset(ccw, 0, sizeof(struct ccw1)); in dasd_3990_erp_DCTL()
217 ccw->cmd_code = CCW_CMD_DCTL; in dasd_3990_erp_DCTL()
218 ccw->count = 4; in dasd_3990_erp_DCTL()
219 ccw->cda = virt_to_dma32(DCTL_data); in dasd_3990_erp_DCTL()
1592 struct ccw1 *ccw, *oldccw; in dasd_3990_erp_action_1B_32() local
1685 ccw = erp->cpaddr; in dasd_3990_erp_action_1B_32()
1686 memset(ccw, 0, sizeof(struct ccw1)); in dasd_3990_erp_action_1B_32()
1687 ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; in dasd_3990_erp_action_1B_32()
[all …]
Ddasd_alias.c412 struct ccw1 *ccw; in read_unit_address_configuration() local
434 ccw = cqr->cpaddr; in read_unit_address_configuration()
435 ccw->cmd_code = DASD_ECKD_CCW_PSF; in read_unit_address_configuration()
436 ccw->count = sizeof(struct dasd_psf_prssd_data); in read_unit_address_configuration()
437 ccw->flags |= CCW_FLAG_CC; in read_unit_address_configuration()
438 ccw->cda = virt_to_dma32(prssdp); in read_unit_address_configuration()
443 ccw++; in read_unit_address_configuration()
444 ccw->cmd_code = DASD_ECKD_CCW_RSSD; in read_unit_address_configuration()
445 ccw->count = sizeof(*(lcu->uac)); in read_unit_address_configuration()
446 ccw->cda = virt_to_dma32(lcu->uac); in read_unit_address_configuration()
[all …]
Ddasd_eer.c455 struct ccw1 *ccw; in dasd_eer_enable() local
484 ccw = cqr->cpaddr; in dasd_eer_enable()
485 ccw->cmd_code = DASD_ECKD_CCW_SNSS; in dasd_eer_enable()
486 ccw->count = SNSS_DATA_SIZE; in dasd_eer_enable()
487 ccw->flags = 0; in dasd_eer_enable()
488 ccw->cda = virt_to_dma32(cqr->data); in dasd_eer_enable()
/linux-6.12.1/drivers/dma/
Dmxs-dma.c114 struct mxs_dma_ccw *ccw; member
401 mxs_chan->ccw = dma_alloc_coherent(mxs_dma->dma_device.dev, in mxs_dma_alloc_chan_resources()
404 if (!mxs_chan->ccw) { in mxs_dma_alloc_chan_resources()
432 mxs_chan->ccw, mxs_chan->ccw_phys); in mxs_dma_alloc_chan_resources()
447 mxs_chan->ccw, mxs_chan->ccw_phys); in mxs_dma_free_chan_resources()
481 struct mxs_dma_ccw *ccw; in mxs_dma_prep_slave_sg() local
506 ccw = &mxs_chan->ccw[idx - 1]; in mxs_dma_prep_slave_sg()
507 ccw->next = mxs_chan->ccw_phys + sizeof(*ccw) * idx; in mxs_dma_prep_slave_sg()
508 ccw->bits |= CCW_CHAIN; in mxs_dma_prep_slave_sg()
509 ccw->bits &= ~CCW_IRQ; in mxs_dma_prep_slave_sg()
[all …]
/linux-6.12.1/drivers/s390/cio/
Dvfio_ccw_cp.c261 static inline int ccw_does_data_transfer(struct ccw1 *ccw) in ccw_does_data_transfer() argument
264 if (ccw->count == 0) in ccw_does_data_transfer()
268 if (ccw_is_noop(ccw)) in ccw_does_data_transfer()
272 if (!ccw_is_skip(ccw)) in ccw_does_data_transfer()
280 if (ccw_is_read(ccw) || ccw_is_read_backward(ccw)) in ccw_does_data_transfer()
283 if (ccw_is_sense(ccw)) in ccw_does_data_transfer()
310 static inline int is_tic_within_range(struct ccw1 *ccw, u32 head, int len) in is_tic_within_range() argument
312 if (!ccw_is_tic(ccw)) in is_tic_within_range()
315 return is_cpa_within_range(ccw->cda, head, len); in is_tic_within_range()
355 struct ccw1 *ccw = &chain->ch_ccw[idx]; in ccwchain_cda_free() local
[all …]
Dqdio_main.c804 rc = ccw_device_start(cdev, irq_ptr->ccw, intparm, 0, 0); in qdio_int_handler()
938 kfree(irq_ptr->ccw); in qdio_free()
968 irq_ptr->ccw = kmalloc(sizeof(*irq_ptr->ccw), GFP_KERNEL | GFP_DMA); in qdio_allocate()
969 if (!irq_ptr->ccw) in qdio_allocate()
973 kmemleak_not_leak(irq_ptr->ccw); in qdio_allocate()
1012 kfree(irq_ptr->ccw); in qdio_allocate()
1088 irq_ptr->ccw->cmd_code = ciw->cmd; in qdio_establish()
1089 irq_ptr->ccw->flags = CCW_FLAG_SLI; in qdio_establish()
1090 irq_ptr->ccw->count = ciw->count; in qdio_establish()
1091 irq_ptr->ccw->cda = virt_to_dma32(irq_ptr->qdr); in qdio_establish()
[all …]
/linux-6.12.1/arch/s390/include/asm/
Didals.h88 static inline int set_normalized_cda(struct ccw1 *ccw, void *vaddr) in set_normalized_cda() argument
93 if (ccw->flags & CCW_FLAG_IDA) in set_normalized_cda()
95 nridaws = idal_nr_words(vaddr, ccw->count); in set_normalized_cda()
100 idal_create_words(idal, vaddr, ccw->count); in set_normalized_cda()
101 ccw->flags |= CCW_FLAG_IDA; in set_normalized_cda()
104 ccw->cda = virt_to_dma32(vaddr); in set_normalized_cda()
111 static inline void clear_normalized_cda(struct ccw1 *ccw) in clear_normalized_cda() argument
113 if (ccw->flags & CCW_FLAG_IDA) { in clear_normalized_cda()
114 kfree(dma32_to_virt(ccw->cda)); in clear_normalized_cda()
115 ccw->flags &= ~CCW_FLAG_IDA; in clear_normalized_cda()
[all …]
Dipl.h24 struct ipl_pb0_ccw ccw; member
86 } ccw; member
/linux-6.12.1/Documentation/driver-api/
Ds390-drivers.rst39 device on the ccw bus and are described below.
40 * I/O subchannels bound to the vfio-ccw driver. See
41 Documentation/arch/s390/vfio-ccw.rst.
47 The ccw bus
50 The ccw bus typically contains the majority of devices available to a
51 s390 system. Named after the channel command word (ccw), the basic
52 command structure used to address its devices, the ccw bus contains
56 subchannel directly, but only via the I/O device on the ccw bus, the ccw
70 ccw devices
73 Devices that want to initiate channel I/O need to attach to the ccw bus.
[all …]
/linux-6.12.1/drivers/s390/net/
Dctcm_mpc.c1513 rc = ccw_device_start(ch->cdev, &ch->ccw[15], 0, 0xff, 0); in mpc_action_send_discontact()
1695 ch->ccw[8].flags = CCW_FLAG_SLI | CCW_FLAG_CC; in mpc_action_side_xid()
1696 ch->ccw[8].count = 0; in mpc_action_side_xid()
1697 ch->ccw[8].cda = 0x00; in mpc_action_side_xid()
1708 ch->ccw[9].cmd_code = CCW_CMD_WRITE; in mpc_action_side_xid()
1709 ch->ccw[9].flags = CCW_FLAG_SLI | CCW_FLAG_CC; in mpc_action_side_xid()
1710 ch->ccw[9].count = TH_HEADER_LENGTH; in mpc_action_side_xid()
1711 ch->ccw[9].cda = virt_to_dma32(ch->xid_th); in mpc_action_side_xid()
1715 ch->ccw[10].cmd_code = CCW_CMD_WRITE; in mpc_action_side_xid()
1716 ch->ccw[10].flags = CCW_FLAG_SLI | CCW_FLAG_CC; in mpc_action_side_xid()
[all …]
Dctcm_fsms.c279 clear_normalized_cda(&ch->ccw[4]); in chx_txdone()
307 ch->ccw[1].count = ch->trans_skb->len; in chx_txdone()
310 rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0); in chx_txdone()
418 ch->ccw[1].count = ch->max_bufsize; in chx_rx()
419 rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0); in chx_rx()
475 ch->ccw[1].count = 2; /* Transfer only length */ in chx_firstio()
479 rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0); in chx_firstio()
525 ch->ccw[1].count = ch->max_bufsize; in chx_rxidle()
527 rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0); in chx_rxidle()
563 CTCM_CCW_DUMP((char *)&ch->ccw[6], sizeof(struct ccw1) * 2); in ctcm_chx_setmode()
[all …]
Dctcm_main.c220 clear_normalized_cda(&ch->ccw[4]); in channel_remove()
222 clear_normalized_cda(&ch->ccw[1]); in channel_remove()
230 kfree(ch->ccw); in channel_remove()
384 clear_normalized_cda(&ch->ccw[1]); in ctcm_ch_alloc_buffer()
395 ch->ccw[1].count = ch->max_bufsize; in ctcm_ch_alloc_buffer()
396 if (set_normalized_cda(&ch->ccw[1], ch->trans_skb->data)) { in ctcm_ch_alloc_buffer()
407 ch->ccw[1].count = 0; in ctcm_ch_alloc_buffer()
534 ch->ccw[4].count = block_len; in ctcm_transmit_skb()
535 if (set_normalized_cda(&ch->ccw[4], skb->data)) { in ctcm_transmit_skb()
554 ch->ccw[1].count = skb->len; in ctcm_transmit_skb()
[all …]
/linux-6.12.1/arch/s390/kernel/
Dipl_vmparm.c16 if ((ipb->ccw.vm_flags & IPL_PB0_CCW_VM_FLAG_VP) && in ipl_block_get_ascii_vmparm()
17 (ipb->ccw.vm_parm_len > 0)) { in ipl_block_get_ascii_vmparm()
19 len = min_t(size_t, size - 1, ipb->ccw.vm_parm_len); in ipl_block_get_ascii_vmparm()
20 memcpy(dest, ipb->ccw.vm_parm, len); in ipl_block_get_ascii_vmparm()
Dipl.c416 return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid, in sys_ipl_device_show()
417 ipl_block.ccw.devno); in sys_ipl_device_show()
756 memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); in reipl_generic_vmparm_store()
757 ipb->ccw.vm_parm_len = ip_len; in reipl_generic_vmparm_store()
759 ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP; in reipl_generic_vmparm_store()
760 memcpy(ipb->ccw.vm_parm, buf, ip_len); in reipl_generic_vmparm_store()
761 ASCEBC(ipb->ccw.vm_parm, ip_len); in reipl_generic_vmparm_store()
763 ipb->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_VP; in reipl_generic_vmparm_store()
891 DEFINE_GENERIC_LOADPARM(ccw);
982 DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);
[all …]
/linux-6.12.1/drivers/crypto/nx/
Dnx-common-powernv.c461 u32 ccw; in nx842_exec_icswx() local
482 ccw = 0; in nx842_exec_icswx()
483 ccw = SET_FIELD(CCW_CT, ccw, nx842_ct); in nx842_exec_icswx()
484 ccw = SET_FIELD(CCW_CI_842, ccw, 0); /* use 0 for hw auto-selection */ in nx842_exec_icswx()
485 ccw = SET_FIELD(CCW_FC_842, ccw, fc); in nx842_exec_icswx()
490 ret = icswx(cpu_to_be32(ccw), crb); in nx842_exec_icswx()
493 (unsigned int)ccw, in nx842_exec_icswx()
494 (unsigned int)be32_to_cpu(crb->ccw)); in nx842_exec_icswx()
565 u32 ccw; in nx842_exec_vas() local
579 ccw = 0; in nx842_exec_vas()
[all …]
/linux-6.12.1/Documentation/arch/s390/
Dvfio-ccw.rst2 vfio-ccw: the basic infrastructure
9 Linux/s390. Motivation for vfio-ccw is to passthrough subchannels to a
43 Motivation of vfio-ccw
48 (virtio-ccw)" transport. This makes virtio devices discoverable via
86 Back to vfio-ccw, in short:
99 Physical vfio ccw device and its child mdev
102 As mentioned above, we realize vfio-ccw with a mdev implementation.
105 vfio-ccw device does not have an IOMMU level translation or isolation.
108 handling the I/O instruction interception, vfio-ccw has the software
127 - The vfio_mdev driver for the mediated vfio ccw device.
[all …]
Ddriver-model.rst11 All ccw devices are accessed via a subchannel, this is reflected in the
29 system; it is a pseudo subchannel where disconnected ccw devices are moved to
30 if they are displaced by another ccw device becoming operational on their
31 former subchannel. The ccw devices will be moved again to a proper subchannel
34 You should address a ccw device via its bus id (e.g. 0.0.4711); the device can
35 be found under bus/ccw/devices/.
37 All ccw devices export some data via sysfs.
69 1.1 Bringing up a ccw device
80 1.2 Writing a driver for ccw devices
246 The ccwgroup mechanism is designed to handle devices consisting of multiple ccw
[all …]
/linux-6.12.1/arch/powerpc/include/asm/
Dicswx.h142 __be32 ccw; member
185 static inline int icswx(__be32 ccw, struct coprocessor_request_block *crb) in icswx() argument
187 __be64 ccw_reg = ccw; in icswx()

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