/* * * Support for the mpeg transport stream transfers * PCI function #2 of the cx2388x. * * (c) 2004 Jelle Foks * (c) 2004 Chris Pascoe * (c) 2004 Gerd Knorr * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include "cx88.h" #include #include #include #include #include #include #include /* ------------------------------------------------------------------ */ MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards"); MODULE_AUTHOR("Jelle Foks "); MODULE_AUTHOR("Chris Pascoe "); MODULE_AUTHOR("Gerd Knorr [SuSE Labs]"); MODULE_LICENSE("GPL"); MODULE_VERSION(CX88_VERSION); static unsigned int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "enable debug messages [mpeg]"); #define dprintk(level, fmt, arg...) do { \ if (debug + 1 > level) \ printk(KERN_DEBUG pr_fmt("%s: mpeg:" fmt), \ __func__, ##arg); \ } while (0) #if defined(CONFIG_MODULES) && defined(MODULE) static void request_module_async(struct work_struct *work) { struct cx8802_dev *dev = container_of(work, struct cx8802_dev, request_module_wk); if (dev->core->board.mpeg & CX88_MPEG_DVB) request_module("cx88-dvb"); if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD) request_module("cx88-blackbird"); } static void request_modules(struct cx8802_dev *dev) { INIT_WORK(&dev->request_module_wk, request_module_async); schedule_work(&dev->request_module_wk); } static void flush_request_modules(struct cx8802_dev *dev) { flush_work(&dev->request_module_wk); } #else #define request_modules(dev) #define flush_request_modules(dev) #endif /* CONFIG_MODULES */ static LIST_HEAD(cx8802_devlist); static DEFINE_MUTEX(cx8802_mutex); /* ------------------------------------------------------------------ */ int cx8802_start_dma(struct cx8802_dev *dev, struct cx88_dmaqueue *q, struct cx88_buffer *buf) { struct cx88_core *core = dev->core; dprintk(1, "w: %d, h: %d, f: %d\n", core->width, core->height, core->field); /* setup fifo + format */ cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28], dev->ts_packet_size, buf->risc.dma); /* write TS length to chip */ cx_write(MO_TS_LNGTH, dev->ts_packet_size); /* * FIXME: this needs a review. * also: move to cx88-blackbird + cx88-dvb source files? */ dprintk(1, "core->active_type_id = 0x%08x\n", core->active_type_id); if ((core->active_type_id == CX88_MPEG_DVB) && (core->board.mpeg & CX88_MPEG_DVB)) { dprintk(1, "cx8802_start_dma doing .dvb\n"); /* negedge driven & software reset */ cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl); udelay(100); cx_write(MO_PINMUX_IO, 0x00); cx_write(TS_HW_SOP_CNTRL, 0x47 << 16 | 188 << 4 | 0x01); switch (core->boardnr) { case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q: case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T: case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD: case CX88_BOARD_PCHDTV_HD5500: cx_write(TS_SOP_STAT, 1 << 13); break; case CX88_BOARD_SAMSUNG_SMT_7020: cx_write(TS_SOP_STAT, 0x00); break; case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: /* Enable MPEG parallel IO and video signal pins */ cx_write(MO_PINMUX_IO, 0x88); udelay(100); break; case CX88_BOARD_HAUPPAUGE_HVR1300: /* Enable MPEG parallel IO and video signal pins */ cx_write(MO_PINMUX_IO, 0x88); cx_write(TS_SOP_STAT, 0); cx_write(TS_VALERR_CNTRL, 0); break; case CX88_BOARD_PINNACLE_PCTV_HD_800i: /* Enable MPEG parallel IO and video signal pins */ cx_write(MO_PINMUX_IO, 0x88); cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4)); dev->ts_gen_cntrl = 5; cx_write(TS_SOP_STAT, 0); cx_write(TS_VALERR_CNTRL, 0); udelay(100); break; default: cx_write(TS_SOP_STAT, 0x00); break; } cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl); udelay(100); } else if ((core->active_type_id == CX88_MPEG_BLACKBIRD) && (core->board.mpeg & CX88_MPEG_BLACKBIRD)) { dprintk(1, "cx8802_start_dma doing .blackbird\n"); cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */ /* punctured clock TS & posedge driven & software reset */ cx_write(TS_GEN_CNTRL, 0x46); udelay(100); cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */ cx_write(TS_VALERR_CNTRL, 0x2000); /* punctured clock TS & posedge driven */ cx_write(TS_GEN_CNTRL, 0x06); udelay(100); } else { pr_err("%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__, core->board.mpeg); return -EINVAL; } /* reset counter */ cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET); q->count = 0; /* clear interrupt status register */ cx_write(MO_TS_INTSTAT, 0x1f1111); /* enable irqs */ dprintk(1, "setting the interrupt mask\n"); cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT); cx_set(MO_TS_INTMSK, 0x1f0011); /* start dma */ cx_set(MO_DEV_CNTRL2, (1 << 5)); cx_set(MO_TS_DMACNTRL, 0x11); return 0; } EXPORT_SYMBOL(cx8802_start_dma); static int cx8802_stop_dma(struct cx8802_dev *dev) { struct cx88_core *core = dev->core; dprintk(1, "\n"); /* stop dma */ cx_clear(MO_TS_DMACNTRL, 0x11); /* disable irqs */ cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT); cx_clear(MO_TS_INTMSK, 0x1f0011); /* Reset the controller */ cx_write(TS_GEN_CNTRL, 0xcd); return 0; } static int cx8802_restart_queue(struct cx8802_dev *dev, struct cx88_dmaqueue *q) { struct cx88_buffer *buf; dprintk(1, "\n"); if (list_empty(&q->active)) return 0; buf = list_entry(q->active.next, struct cx88_buffer, list); dprintk(2, "restart_queue [%p/%d]: restart dma\n", buf, buf->vb.vb2_buf.index); cx8802_start_dma(dev, q, buf); return 0; } /* ------------------------------------------------------------------ */ int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev, struct cx88_buffer *buf) { int size = dev->ts_packet_size * dev->ts_packet_count; struct sg_table *sgt = vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0); struct cx88_riscmem *risc = &buf->risc; int rc; if (vb2_plane_size(&buf->vb.vb2_buf, 0) < size) return -EINVAL; vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size); rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl, dev->ts_packet_size, dev->ts_packet_count, 0); if (rc) { if (risc->cpu) pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma); memset(risc, 0, sizeof(*risc)); return rc; } return 0; } EXPORT_SYMBOL(cx8802_buf_prepare); void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf) { struct cx88_buffer *prev; struct cx88_dmaqueue *cx88q = &dev->mpegq; dprintk(1, "\n"); /* add jump to start */ buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 8); buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 8); if (list_empty(&cx88q->active)) { dprintk(1, "queue is empty - first active\n"); list_add_tail(&buf->list, &cx88q->active); dprintk(1, "[%p/%d] %s - first active\n", buf, buf->vb.vb2_buf.index, __func__); } else { buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); dprintk(1, "queue is not empty - append to active\n"); prev = list_entry(cx88q->active.prev, struct cx88_buffer, list); list_add_tail(&buf->list, &cx88q->active); prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); dprintk(1, "[%p/%d] %s - append to active\n", buf, buf->vb.vb2_buf.index, __func__); } } EXPORT_SYMBOL(cx8802_buf_queue); /* ----------------------------------------------------------- */ static void do_cancel_buffers(struct cx8802_dev *dev) { struct cx88_dmaqueue *q = &dev->mpegq; struct cx88_buffer *buf; unsigned long flags; spin_lock_irqsave(&dev->slock, flags); while (!list_empty(&q->active)) { buf = list_entry(q->active.next, struct cx88_buffer, list); list_del(&buf->list); vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); } spin_unlock_irqrestore(&dev->slock, flags); } void cx8802_cancel_buffers(struct cx8802_dev *dev) { dprintk(1, "\n"); cx8802_stop_dma(dev); do_cancel_buffers(dev); } EXPORT_SYMBOL(cx8802_cancel_buffers); static const char *cx88_mpeg_irqs[32] = { "ts_risci1", NULL, NULL, NULL, "ts_risci2", NULL, NULL, NULL, "ts_oflow", NULL, NULL, NULL, "ts_sync", NULL, NULL, NULL, "opc_err", "par_err", "rip_err", "pci_abort", "ts_err?", }; static void cx8802_mpeg_irq(struct cx8802_dev *dev) { struct cx88_core *core = dev->core; u32 status, mask, count; dprintk(1, "\n"); status = cx_read(MO_TS_INTSTAT); mask = cx_read(MO_TS_INTMSK); if (0 == (status & mask)) return; cx_write(MO_TS_INTSTAT, status); if (debug || (status & mask & ~0xff)) cx88_print_irqbits("irq mpeg ", cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs), status, mask); /* risc op code error */ if (status & (1 << 16)) { pr_warn("mpeg risc op code error\n"); cx_clear(MO_TS_DMACNTRL, 0x11); cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]); } /* risc1 y */ if (status & 0x01) { dprintk(1, "wake up\n"); spin_lock(&dev->slock); count = cx_read(MO_TS_GPCNT); cx88_wakeup(dev->core, &dev->mpegq, count); spin_unlock(&dev->slock); } /* other general errors */ if (status & 0x1f0100) { dprintk(0, "general errors: 0x%08x\n", status & 0x1f0100); spin_lock(&dev->slock); cx8802_stop_dma(dev); spin_unlock(&dev->slock); } } #define MAX_IRQ_LOOP 10 static irqreturn_t cx8802_irq(int irq, void *dev_id) { struct cx8802_dev *dev = dev_id; struct cx88_core *core = dev->core; u32 status; int loop, handled = 0; for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | PCI_INT_TSINT); if (status == 0) goto out; dprintk(1, "cx8802_irq\n"); dprintk(1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP); dprintk(1, " status: %d\n", status); handled = 1; cx_write(MO_PCI_INTSTAT, status); if (status & core->pci_irqmask) cx88_core_irq(core, status); if (status & PCI_INT_TSINT) cx8802_mpeg_irq(dev); } if (loop == MAX_IRQ_LOOP) { dprintk(0, "clearing mask\n"); pr_warn("irq loop -- clearing mask\n"); cx_write(MO_PCI_INTMSK, 0); } out: return IRQ_RETVAL(handled); } static int cx8802_init_common(struct cx8802_dev *dev) { struct cx88_core *core = dev->core; int err; /* pci init */ if (pci_enable_device(dev->pci)) return -EIO; pci_set_master(dev->pci); err = pci_set_dma_mask(dev->pci, DMA_BIT_MASK(32)); if (err) { pr_err("Oops: no 32bit PCI DMA ???\n"); return -EIO; } dev->pci_rev = dev->pci->revision; pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat); pr_info("found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n", pci_name(dev->pci), dev->pci_rev, dev->pci->irq, dev->pci_lat, (unsigned long long)pci_resource_start(dev->pci, 0)); /* initialize driver struct */ spin_lock_init(&dev->slock); /* init dma queue */ INIT_LIST_HEAD(&dev->mpegq.active); /* get irq */ err = request_irq(dev->pci->irq, cx8802_irq, IRQF_SHARED, dev->core->name, dev); if (err < 0) { pr_err("can't get IRQ %d\n", dev->pci->irq); return err; } cx_set(MO_PCI_INTMSK, core->pci_irqmask); /* everything worked */ pci_set_drvdata(dev->pci, dev); return 0; } static void cx8802_fini_common(struct cx8802_dev *dev) { dprintk(2, "\n"); cx8802_stop_dma(dev); pci_disable_device(dev->pci); /* unregister stuff */ free_irq(dev->pci->irq, dev); } /* ----------------------------------------------------------- */ static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state) { struct cx8802_dev *dev = pci_get_drvdata(pci_dev); unsigned long flags; /* stop mpeg dma */ spin_lock_irqsave(&dev->slock, flags); if (!list_empty(&dev->mpegq.active)) { dprintk(2, "suspend\n"); pr_info("suspend mpeg\n"); cx8802_stop_dma(dev); } spin_unlock_irqrestore(&dev->slock, flags); /* FIXME -- shutdown device */ cx88_shutdown(dev->core); pci_save_state(pci_dev); if (pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)) != 0) { pci_disable_device(pci_dev); dev->state.disabled = 1; } return 0; } static int cx8802_resume_common(struct pci_dev *pci_dev) { struct cx8802_dev *dev = pci_get_drvdata(pci_dev); unsigned long flags; int err; if (dev->state.disabled) { err = pci_enable_device(pci_dev); if (err) { pr_err("can't enable device\n"); return err; } dev->state.disabled = 0; } err = pci_set_power_state(pci_dev, PCI_D0); if (err) { pr_err("can't enable device\n"); pci_disable_device(pci_dev); dev->state.disabled = 1; return err; } pci_restore_state(pci_dev); /* FIXME: re-initialize hardware */ cx88_reset(dev->core); /* restart video+vbi capture */ spin_lock_irqsave(&dev->slock, flags); if (!list_empty(&dev->mpegq.active)) { pr_info("resume mpeg\n"); cx8802_restart_queue(dev, &dev->mpegq); } spin_unlock_irqrestore(&dev->slock, flags); return 0; } struct cx8802_driver *cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype) { struct cx8802_driver *d; list_for_each_entry(d, &dev->drvlist, drvlist) if (d->type_id == btype) return d; return NULL; } EXPORT_SYMBOL(cx8802_get_driver); /* Driver asked for hardware access. */ static int cx8802_request_acquire(struct cx8802_driver *drv) { struct cx88_core *core = drv->core; unsigned int i; /* Fail a request for hardware if the device is busy. */ if (core->active_type_id != CX88_BOARD_NONE && core->active_type_id != drv->type_id) return -EBUSY; if (drv->type_id == CX88_MPEG_DVB) { /* When switching to DVB, always set the input to the tuner */ core->last_analog_input = core->input; core->input = 0; for (i = 0; i < (sizeof(core->board.input) / sizeof(struct cx88_input)); i++) { if (core->board.input[i].type == CX88_VMUX_DVB) { core->input = i; break; } } } if (drv->advise_acquire) { core->active_ref++; if (core->active_type_id == CX88_BOARD_NONE) { core->active_type_id = drv->type_id; drv->advise_acquire(drv); } dprintk(1, "Post acquire GPIO=%x\n", cx_read(MO_GP0_IO)); } return 0; } /* Driver asked to release hardware. */ static int cx8802_request_release(struct cx8802_driver *drv) { struct cx88_core *core = drv->core; if (drv->advise_release && --core->active_ref == 0) { if (drv->type_id == CX88_MPEG_DVB) { /* * If the DVB driver is releasing, reset the input * state to the last configured analog input */ core->input = core->last_analog_input; } drv->advise_release(drv); core->active_type_id = CX88_BOARD_NONE; dprintk(1, "Post release GPIO=%x\n", cx_read(MO_GP0_IO)); } return 0; } static int cx8802_check_driver(struct cx8802_driver *drv) { if (!drv) return -ENODEV; if ((drv->type_id != CX88_MPEG_DVB) && (drv->type_id != CX88_MPEG_BLACKBIRD)) return -EINVAL; if ((drv->hw_access != CX8802_DRVCTL_SHARED) && (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE)) return -EINVAL; if ((!drv->probe) || (!drv->remove) || (!drv->advise_acquire) || (!drv->advise_release)) return -EINVAL; return 0; } int cx8802_register_driver(struct cx8802_driver *drv) { struct cx8802_dev *dev; struct cx8802_driver *driver; int err, i = 0; pr_info("registering cx8802 driver, type: %s access: %s\n", drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); err = cx8802_check_driver(drv); if (err) { pr_err("cx8802_driver is invalid\n"); return err; } mutex_lock(&cx8802_mutex); list_for_each_entry(dev, &cx8802_devlist, devlist) { pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n", dev->pci->subsystem_vendor, dev->pci->subsystem_device, dev->core->board.name, dev->core->boardnr); /* Bring up a new struct for each driver instance */ driver = kzalloc(sizeof(*drv), GFP_KERNEL); if (!driver) { err = -ENOMEM; goto out; } /* Snapshot of the driver registration data */ drv->core = dev->core; drv->suspend = cx8802_suspend_common; drv->resume = cx8802_resume_common; drv->request_acquire = cx8802_request_acquire; drv->request_release = cx8802_request_release; memcpy(driver, drv, sizeof(*driver)); mutex_lock(&drv->core->lock); err = drv->probe(driver); if (err == 0) { i++; list_add_tail(&driver->drvlist, &dev->drvlist); } else { pr_err("cx8802 probe failed, err = %d\n", err); } mutex_unlock(&drv->core->lock); } err = i ? 0 : -ENODEV; out: mutex_unlock(&cx8802_mutex); return err; } EXPORT_SYMBOL(cx8802_register_driver); int cx8802_unregister_driver(struct cx8802_driver *drv) { struct cx8802_dev *dev; struct cx8802_driver *d, *dtmp; int err = 0; pr_info("unregistering cx8802 driver, type: %s access: %s\n", drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); mutex_lock(&cx8802_mutex); list_for_each_entry(dev, &cx8802_devlist, devlist) { pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n", dev->pci->subsystem_vendor, dev->pci->subsystem_device, dev->core->board.name, dev->core->boardnr); mutex_lock(&dev->core->lock); list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) { /* only unregister the correct driver type */ if (d->type_id != drv->type_id) continue; err = d->remove(d); if (err == 0) { list_del(&d->drvlist); kfree(d); } else pr_err("cx8802 driver remove failed (%d)\n", err); } mutex_unlock(&dev->core->lock); } mutex_unlock(&cx8802_mutex); return err; } EXPORT_SYMBOL(cx8802_unregister_driver); /* ----------------------------------------------------------- */ static int cx8802_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id) { struct cx8802_dev *dev; struct cx88_core *core; int err; /* general setup */ core = cx88_core_get(pci_dev); if (!core) return -EINVAL; pr_info("cx2388x 8802 Driver Manager\n"); err = -ENODEV; if (!core->board.mpeg) goto fail_core; err = -ENOMEM; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) goto fail_core; dev->pci = pci_dev; dev->core = core; /* Maintain a reference so cx88-video can query the 8802 device. */ core->dvbdev = dev; err = cx8802_init_common(dev); if (err != 0) goto fail_dev; INIT_LIST_HEAD(&dev->drvlist); mutex_lock(&cx8802_mutex); list_add_tail(&dev->devlist, &cx8802_devlist); mutex_unlock(&cx8802_mutex); /* now autoload cx88-dvb or cx88-blackbird */ request_modules(dev); return 0; fail_dev: kfree(dev); fail_core: core->dvbdev = NULL; cx88_core_put(core, pci_dev); return err; } static void cx8802_remove(struct pci_dev *pci_dev) { struct cx8802_dev *dev; dev = pci_get_drvdata(pci_dev); dprintk(1, "%s\n", __func__); flush_request_modules(dev); mutex_lock(&dev->core->lock); if (!list_empty(&dev->drvlist)) { struct cx8802_driver *drv, *tmp; int err; pr_warn("Trying to remove cx8802 driver while cx8802 sub-drivers still loaded?!\n"); list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) { err = drv->remove(drv); if (err == 0) { list_del(&drv->drvlist); } else pr_err("cx8802 driver remove failed (%d)\n", err); kfree(drv); } } mutex_unlock(&dev->core->lock); /* Destroy any 8802 reference. */ dev->core->dvbdev = NULL; /* common */ cx8802_fini_common(dev); cx88_core_put(dev->core, dev->pci); kfree(dev); } static const struct pci_device_id cx8802_pci_tbl[] = { { .vendor = 0x14f1, .device = 0x8802, .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, }, { /* --- end of list --- */ } }; MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl); static struct pci_driver cx8802_pci_driver = { .name = "cx88-mpeg driver manager", .id_table = cx8802_pci_tbl, .probe = cx8802_probe, .remove = cx8802_remove, }; module_pci_driver(cx8802_pci_driver);