Lines Matching full:qmc
3 * QMC driver
10 #include <soc/fsl/qe/qmc.h>
177 struct qmc *qmc; member
203 struct qmc { struct
263 ret = tsa_serial_get_info(chan->qmc->tsa_serial, &tsa_info); in qmc_chan_get_info()
290 qmc_write16(chan->qmc->scc_pram + QMC_GBL_MRBLR, in qmc_chan_set_param()
450 qmc_write16(&bd->cbd_datlen, 0); /* data length is updated by the QMC */ in qmc_chan_read_submit()
557 dev_err(chan->qmc->dev, "chan %u: Send STOP RECEIVE failed (%d)\n", in qmc_chan_stop_rx()
579 dev_err(chan->qmc->dev, "chan %u: Send STOP TRANSMIT failed (%d)\n", in qmc_chan_stop_tx()
740 static int qmc_check_chans(struct qmc *qmc) in qmc_check_chans() argument
752 ret = tsa_serial_get_info(qmc->tsa_serial, &info); in qmc_check_chans()
757 dev_err(qmc->dev, "Number of TSA Tx/Rx TS assigned not supported\n"); in qmc_check_chans()
767 dev_err(qmc->dev, "Number of TSA Tx/Rx TS assigned are not equal\n"); in qmc_check_chans()
776 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_check_chans()
778 dev_err(qmc->dev, "chan %u uses TSA unassigned Tx TS\n", chan->id); in qmc_check_chans()
782 dev_err(qmc->dev, "chan %u uses an already used Tx TS\n", chan->id); in qmc_check_chans()
787 dev_err(qmc->dev, "chan %u uses TSA unassigned Rx TS\n", chan->id); in qmc_check_chans()
791 dev_err(qmc->dev, "chan %u uses an already used Rx TS\n", chan->id); in qmc_check_chans()
796 dev_err(qmc->dev, "chan %u uses different Rx and Tx TS\n", chan->id); in qmc_check_chans()
807 static unsigned int qmc_nb_chans(struct qmc *qmc) in qmc_nb_chans() argument
812 list_for_each_entry(chan, &qmc->chan_head, list) in qmc_nb_chans()
818 static int qmc_of_parse_chans(struct qmc *qmc, struct device_node *np) in qmc_of_parse_chans() argument
830 dev_err(qmc->dev, "%pOF: failed to read reg\n", chan_np); in qmc_of_parse_chans()
835 dev_err(qmc->dev, "%pOF: Invalid chan_id\n", chan_np); in qmc_of_parse_chans()
840 chan = devm_kzalloc(qmc->dev, sizeof(*chan), GFP_KERNEL); in qmc_of_parse_chans()
852 dev_err(qmc->dev, "%pOF: failed to read fsl,tx-ts-mask\n", in qmc_of_parse_chans()
861 dev_err(qmc->dev, "%pOF: failed to read fsl,rx-ts-mask\n", in qmc_of_parse_chans()
871 dev_err(qmc->dev, "%pOF: failed to read fsl,operational-mode\n", in qmc_of_parse_chans()
881 dev_err(qmc->dev, "%pOF: Invalid fsl,operational-mode (%s)\n", in qmc_of_parse_chans()
890 list_add_tail(&chan->list, &qmc->chan_head); in qmc_of_parse_chans()
891 qmc->chans[chan->id] = chan; in qmc_of_parse_chans()
894 return qmc_check_chans(qmc); in qmc_of_parse_chans()
897 static int qmc_setup_tsa_64rxtx(struct qmc *qmc, const struct tsa_serial_info *info) in qmc_setup_tsa_64rxtx() argument
911 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), 0x0000); in qmc_setup_tsa_64rxtx()
914 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_setup_tsa_64rxtx()
921 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), val); in qmc_setup_tsa_64rxtx()
926 qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATRX + ((info->nb_rx_ts - 1) * 2), in qmc_setup_tsa_64rxtx()
930 val = qmc->scc_pram_offset + QMC_GBL_TSATRX; in qmc_setup_tsa_64rxtx()
931 qmc_write16(qmc->scc_pram + QMC_GBL_RX_S_PTR, val); in qmc_setup_tsa_64rxtx()
932 qmc_write16(qmc->scc_pram + QMC_GBL_RXPTR, val); in qmc_setup_tsa_64rxtx()
933 qmc_write16(qmc->scc_pram + QMC_GBL_TX_S_PTR, val); in qmc_setup_tsa_64rxtx()
934 qmc_write16(qmc->scc_pram + QMC_GBL_TXPTR, val); in qmc_setup_tsa_64rxtx()
939 static int qmc_setup_tsa_32rx_32tx(struct qmc *qmc, const struct tsa_serial_info *info) in qmc_setup_tsa_32rx_32tx() argument
952 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), 0x0000); in qmc_setup_tsa_32rx_32tx()
953 qmc_write16(qmc->scc_pram + QMC_GBL_TSATTX + (i * 2), 0x0000); in qmc_setup_tsa_32rx_32tx()
957 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_setup_tsa_32rx_32tx()
965 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), val); in qmc_setup_tsa_32rx_32tx()
974 qmc_write16(qmc->scc_pram + QMC_GBL_TSATTX + (i * 2), val); in qmc_setup_tsa_32rx_32tx()
979 qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATRX + ((info->nb_rx_ts - 1) * 2), in qmc_setup_tsa_32rx_32tx()
981 qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATTX + ((info->nb_tx_ts - 1) * 2), in qmc_setup_tsa_32rx_32tx()
985 val = qmc->scc_pram_offset + QMC_GBL_TSATRX; in qmc_setup_tsa_32rx_32tx()
986 qmc_write16(qmc->scc_pram + QMC_GBL_RX_S_PTR, val); in qmc_setup_tsa_32rx_32tx()
987 qmc_write16(qmc->scc_pram + QMC_GBL_RXPTR, val); in qmc_setup_tsa_32rx_32tx()
990 val = qmc->scc_pram_offset + QMC_GBL_TSATTX; in qmc_setup_tsa_32rx_32tx()
991 qmc_write16(qmc->scc_pram + QMC_GBL_TX_S_PTR, val); in qmc_setup_tsa_32rx_32tx()
992 qmc_write16(qmc->scc_pram + QMC_GBL_TXPTR, val); in qmc_setup_tsa_32rx_32tx()
997 static int qmc_setup_tsa(struct qmc *qmc) in qmc_setup_tsa() argument
1003 ret = tsa_serial_get_info(qmc->tsa_serial, &info); in qmc_setup_tsa()
1012 qmc_setup_tsa_64rxtx(qmc, &info) : in qmc_setup_tsa()
1013 qmc_setup_tsa_32rx_32tx(qmc, &info); in qmc_setup_tsa()
1016 static int qmc_setup_chan_trnsync(struct qmc *qmc, struct qmc_chan *chan) in qmc_setup_chan_trnsync() argument
1024 ret = tsa_serial_get_info(chan->qmc->tsa_serial, &info); in qmc_setup_chan_trnsync()
1042 dev_dbg(qmc->dev, "chan %u: trnsync=0x%04x, rx %u/%u 0x%llx, tx %u/%u 0x%llx\n", in qmc_setup_chan_trnsync()
1050 static int qmc_setup_chan(struct qmc *qmc, struct qmc_chan *chan) in qmc_setup_chan() argument
1057 chan->qmc = qmc; in qmc_setup_chan()
1060 chan->s_param = qmc->dpram + (chan->id * 64); in qmc_setup_chan()
1062 chan->txbds = qmc->bd_table + (chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS)); in qmc_setup_chan()
1063 chan->rxbds = qmc->bd_table + (chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS)) + QMC_NB_TXBDS; in qmc_setup_chan()
1089 ret = qmc_setup_chan_trnsync(qmc, chan); in qmc_setup_chan()
1127 static int qmc_setup_chans(struct qmc *qmc) in qmc_setup_chans() argument
1132 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_setup_chans()
1133 ret = qmc_setup_chan(qmc, chan); in qmc_setup_chans()
1141 static int qmc_finalize_chans(struct qmc *qmc) in qmc_finalize_chans() argument
1146 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_finalize_chans()
1168 static int qmc_setup_ints(struct qmc *qmc) in qmc_setup_ints() argument
1174 for (i = 0; i < (qmc->int_size / sizeof(u16)); i++) in qmc_setup_ints()
1175 qmc_write16(qmc->int_table + i, 0x0000); in qmc_setup_ints()
1178 if (qmc->int_size >= sizeof(u16)) { in qmc_setup_ints()
1179 last = qmc->int_table + (qmc->int_size / sizeof(u16)) - 1; in qmc_setup_ints()
1186 static void qmc_irq_gint(struct qmc *qmc) in qmc_irq_gint() argument
1193 int_entry = qmc_read16(qmc->int_curr); in qmc_irq_gint()
1196 qmc_write16(qmc->int_curr, int_entry & QMC_INT_W); in qmc_irq_gint()
1199 chan = qmc->chans[chan_id]; in qmc_irq_gint()
1201 dev_err(qmc->dev, "interrupt on invalid chan %u\n", chan_id); in qmc_irq_gint()
1209 dev_info(qmc->dev, "intr chan %u, 0x%04x (UN)\n", chan_id, in qmc_irq_gint()
1215 dev_info(qmc->dev, "intr chan %u, 0x%04x (BSY)\n", chan_id, in qmc_irq_gint()
1238 qmc->int_curr = qmc->int_table; in qmc_irq_gint()
1240 qmc->int_curr++; in qmc_irq_gint()
1241 int_entry = qmc_read16(qmc->int_curr); in qmc_irq_gint()
1247 struct qmc *qmc = (struct qmc *)priv; in qmc_irq_handler() local
1250 scce = qmc_read16(qmc->scc_regs + SCC_SCCE); in qmc_irq_handler()
1251 qmc_write16(qmc->scc_regs + SCC_SCCE, scce); in qmc_irq_handler()
1254 dev_info(qmc->dev, "IRQ queue overflow\n"); in qmc_irq_handler()
1257 dev_err(qmc->dev, "Global transmitter underrun\n"); in qmc_irq_handler()
1260 dev_err(qmc->dev, "Global receiver overrun\n"); in qmc_irq_handler()
1264 qmc_irq_gint(qmc); in qmc_irq_handler()
1274 struct qmc *qmc; in qmc_probe() local
1278 qmc = devm_kzalloc(&pdev->dev, sizeof(*qmc), GFP_KERNEL); in qmc_probe()
1279 if (!qmc) in qmc_probe()
1282 qmc->dev = &pdev->dev; in qmc_probe()
1283 INIT_LIST_HEAD(&qmc->chan_head); in qmc_probe()
1285 qmc->scc_regs = devm_platform_ioremap_resource_byname(pdev, "scc_regs"); in qmc_probe()
1286 if (IS_ERR(qmc->scc_regs)) in qmc_probe()
1287 return PTR_ERR(qmc->scc_regs); in qmc_probe()
1293 qmc->scc_pram_offset = res->start - get_immrbase(); in qmc_probe()
1294 qmc->scc_pram = devm_ioremap_resource(qmc->dev, res); in qmc_probe()
1295 if (IS_ERR(qmc->scc_pram)) in qmc_probe()
1296 return PTR_ERR(qmc->scc_pram); in qmc_probe()
1298 qmc->dpram = devm_platform_ioremap_resource_byname(pdev, "dpram"); in qmc_probe()
1299 if (IS_ERR(qmc->dpram)) in qmc_probe()
1300 return PTR_ERR(qmc->dpram); in qmc_probe()
1302 qmc->tsa_serial = devm_tsa_serial_get_byphandle(qmc->dev, np, "fsl,tsa-serial"); in qmc_probe()
1303 if (IS_ERR(qmc->tsa_serial)) { in qmc_probe()
1304 return dev_err_probe(qmc->dev, PTR_ERR(qmc->tsa_serial), in qmc_probe()
1309 ret = tsa_serial_connect(qmc->tsa_serial); in qmc_probe()
1311 dev_err(qmc->dev, "Failed to connect TSA serial\n"); in qmc_probe()
1316 ret = qmc_of_parse_chans(qmc, np); in qmc_probe()
1320 nb_chans = qmc_nb_chans(qmc); in qmc_probe()
1323 qmc_write32(qmc->scc_regs + SCC_GSMRH, in qmc_probe()
1326 /* enable QMC mode */ in qmc_probe()
1327 qmc_write32(qmc->scc_regs + SCC_GSMRL, SCC_GSMRL_MODE_QMC); in qmc_probe()
1333 qmc->bd_size = (nb_chans * (QMC_NB_TXBDS + QMC_NB_RXBDS)) * sizeof(cbd_t); in qmc_probe()
1334 qmc->bd_table = dmam_alloc_coherent(qmc->dev, qmc->bd_size, in qmc_probe()
1335 &qmc->bd_dma_addr, GFP_KERNEL); in qmc_probe()
1336 if (!qmc->bd_table) { in qmc_probe()
1337 dev_err(qmc->dev, "Failed to allocate bd table\n"); in qmc_probe()
1341 memset(qmc->bd_table, 0, qmc->bd_size); in qmc_probe()
1343 qmc_write32(qmc->scc_pram + QMC_GBL_MCBASE, qmc->bd_dma_addr); in qmc_probe()
1346 qmc->int_size = QMC_NB_INTS * sizeof(u16); in qmc_probe()
1347 qmc->int_table = dmam_alloc_coherent(qmc->dev, qmc->int_size, in qmc_probe()
1348 &qmc->int_dma_addr, GFP_KERNEL); in qmc_probe()
1349 if (!qmc->int_table) { in qmc_probe()
1350 dev_err(qmc->dev, "Failed to allocate interrupt table\n"); in qmc_probe()
1354 memset(qmc->int_table, 0, qmc->int_size); in qmc_probe()
1356 qmc->int_curr = qmc->int_table; in qmc_probe()
1357 qmc_write32(qmc->scc_pram + QMC_GBL_INTBASE, qmc->int_dma_addr); in qmc_probe()
1358 qmc_write32(qmc->scc_pram + QMC_GBL_INTPTR, qmc->int_dma_addr); in qmc_probe()
1361 qmc_write16(qmc->scc_pram + QMC_GBL_MRBLR, HDLC_MAX_MRU + 4); in qmc_probe()
1363 qmc_write16(qmc->scc_pram + QMC_GBL_GRFTHR, 1); in qmc_probe()
1364 qmc_write16(qmc->scc_pram + QMC_GBL_GRFCNT, 1); in qmc_probe()
1366 qmc_write32(qmc->scc_pram + QMC_GBL_C_MASK32, 0xDEBB20E3); in qmc_probe()
1367 qmc_write16(qmc->scc_pram + QMC_GBL_C_MASK16, 0xF0B8); in qmc_probe()
1369 ret = qmc_setup_tsa(qmc); in qmc_probe()
1373 qmc_write16(qmc->scc_pram + QMC_GBL_QMCSTATE, 0x8000); in qmc_probe()
1375 ret = qmc_setup_chans(qmc); in qmc_probe()
1380 ret = qmc_setup_ints(qmc); in qmc_probe()
1385 qmc_write16(qmc->scc_regs + SCC_SCCM, 0x0000); in qmc_probe()
1386 qmc_write16(qmc->scc_regs + SCC_SCCE, 0x000F); in qmc_probe()
1390 ret = devm_request_irq(qmc->dev, irq, qmc_irq_handler, 0, "qmc", qmc); in qmc_probe()
1395 qmc_write16(qmc->scc_regs + SCC_SCCM, in qmc_probe()
1398 ret = qmc_finalize_chans(qmc); in qmc_probe()
1403 qmc_setbits32(qmc->scc_regs + SCC_GSMRL, SCC_GSMRL_ENR | SCC_GSMRL_ENT); in qmc_probe()
1405 platform_set_drvdata(pdev, qmc); in qmc_probe()
1410 qmc_write16(qmc->scc_regs + SCC_SCCM, 0); in qmc_probe()
1413 tsa_serial_disconnect(qmc->tsa_serial); in qmc_probe()
1419 struct qmc *qmc = platform_get_drvdata(pdev); in qmc_remove() local
1422 qmc_setbits32(qmc->scc_regs + SCC_GSMRL, 0); in qmc_remove()
1425 qmc_write16(qmc->scc_regs + SCC_SCCM, 0); in qmc_remove()
1428 tsa_serial_disconnect(qmc->tsa_serial); in qmc_remove()
1434 { .compatible = "fsl,cpm1-scc-qmc" },
1441 .name = "fsl-qmc",
1454 struct qmc *qmc; in qmc_chan_get_byphandle() local
1472 qmc = platform_get_drvdata(pdev); in qmc_chan_get_byphandle()
1473 if (!qmc) { in qmc_chan_get_byphandle()
1483 if (out_args.args[0] >= ARRAY_SIZE(qmc->chans)) { in qmc_chan_get_byphandle()
1488 qmc_chan = qmc->chans[out_args.args[0]]; in qmc_chan_get_byphandle()
1500 put_device(chan->qmc->dev); in qmc_chan_put()
1535 MODULE_DESCRIPTION("CPM QMC driver");