263 lines
6.1 KiB
C
263 lines
6.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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Hopper PCI bridge driver
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Copyright (C) Manu Abraham (abraham.manu@gmail.com)
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <asm/irq.h>
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#include <linux/interrupt.h>
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#include <media/dmxdev.h>
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#include <media/dvbdev.h>
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#include <media/dvb_demux.h>
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#include <media/dvb_frontend.h>
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#include <media/dvb_net.h>
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#include "mantis_common.h"
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#include "hopper_vp3028.h"
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#include "mantis_dma.h"
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#include "mantis_dvb.h"
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#include "mantis_uart.h"
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#include "mantis_ioc.h"
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#include "mantis_pci.h"
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#include "mantis_i2c.h"
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#include "mantis_reg.h"
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static unsigned int verbose;
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module_param(verbose, int, 0644);
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MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
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#define DRIVER_NAME "Hopper"
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static char *label[10] = {
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"DMA",
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"IRQ-0",
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"IRQ-1",
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"OCERR",
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"PABRT",
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"RIPRR",
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"PPERR",
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"FTRGT",
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"RISCI",
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"RACK"
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};
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static int devs;
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static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
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{
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u32 stat = 0, mask = 0;
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u32 rst_stat = 0, rst_mask = 0;
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struct mantis_pci *mantis;
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struct mantis_ca *ca;
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mantis = (struct mantis_pci *) dev_id;
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if (unlikely(!mantis))
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return IRQ_NONE;
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ca = mantis->mantis_ca;
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stat = mmread(MANTIS_INT_STAT);
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mask = mmread(MANTIS_INT_MASK);
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if (!(stat & mask))
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return IRQ_NONE;
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rst_mask = MANTIS_GPIF_WRACK |
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MANTIS_GPIF_OTHERR |
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MANTIS_SBUF_WSTO |
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MANTIS_GPIF_EXTIRQ;
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rst_stat = mmread(MANTIS_GPIF_STATUS);
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rst_stat &= rst_mask;
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mmwrite(rst_stat, MANTIS_GPIF_STATUS);
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mantis->mantis_int_stat = stat;
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mantis->mantis_int_mask = mask;
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dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
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if (stat & MANTIS_INT_RISCEN) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
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}
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if (stat & MANTIS_INT_IRQ0) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
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mantis->gpif_status = rst_stat;
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wake_up(&ca->hif_write_wq);
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schedule_work(&ca->hif_evm_work);
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}
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if (stat & MANTIS_INT_IRQ1) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
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spin_lock(&mantis->intmask_lock);
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mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ1,
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MANTIS_INT_MASK);
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spin_unlock(&mantis->intmask_lock);
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schedule_work(&mantis->uart_work);
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}
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if (stat & MANTIS_INT_OCERR) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
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}
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if (stat & MANTIS_INT_PABORT) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
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}
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if (stat & MANTIS_INT_RIPERR) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
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}
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if (stat & MANTIS_INT_PPERR) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
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}
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if (stat & MANTIS_INT_FTRGT) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
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}
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if (stat & MANTIS_INT_RISCI) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
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mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
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tasklet_schedule(&mantis->tasklet);
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}
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if (stat & MANTIS_INT_I2CDONE) {
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dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
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wake_up(&mantis->i2c_wq);
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}
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mmwrite(stat, MANTIS_INT_STAT);
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stat &= ~(MANTIS_INT_RISCEN | MANTIS_INT_I2CDONE |
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MANTIS_INT_I2CRACK | MANTIS_INT_PCMCIA7 |
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MANTIS_INT_PCMCIA6 | MANTIS_INT_PCMCIA5 |
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MANTIS_INT_PCMCIA4 | MANTIS_INT_PCMCIA3 |
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MANTIS_INT_PCMCIA2 | MANTIS_INT_PCMCIA1 |
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MANTIS_INT_PCMCIA0 | MANTIS_INT_IRQ1 |
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MANTIS_INT_IRQ0 | MANTIS_INT_OCERR |
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MANTIS_INT_PABORT | MANTIS_INT_RIPERR |
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MANTIS_INT_PPERR | MANTIS_INT_FTRGT |
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MANTIS_INT_RISCI);
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if (stat)
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dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
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dprintk(MANTIS_DEBUG, 0, "\n");
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return IRQ_HANDLED;
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}
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static int hopper_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *pci_id)
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{
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struct mantis_pci_drvdata *drvdata;
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struct mantis_pci *mantis;
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struct mantis_hwconfig *config;
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int err;
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mantis = kzalloc(sizeof(*mantis), GFP_KERNEL);
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if (!mantis) {
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err = -ENOMEM;
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goto fail0;
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}
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drvdata = (void *)pci_id->driver_data;
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mantis->num = devs;
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mantis->verbose = verbose;
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mantis->pdev = pdev;
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config = drvdata->hwconfig;
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config->irq_handler = &hopper_irq_handler;
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mantis->hwconfig = config;
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mantis->rc_map_name = drvdata->rc_map_name;
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spin_lock_init(&mantis->intmask_lock);
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err = mantis_pci_init(mantis);
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if (err) {
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
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goto fail1;
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}
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err = mantis_stream_control(mantis, STREAM_TO_HIF);
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if (err < 0) {
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
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goto fail1;
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}
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err = mantis_i2c_init(mantis);
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if (err < 0) {
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
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goto fail2;
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}
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err = mantis_get_mac(mantis);
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if (err < 0) {
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
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goto fail2;
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}
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err = mantis_dma_init(mantis);
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if (err < 0) {
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
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goto fail3;
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}
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err = mantis_dvb_init(mantis);
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if (err < 0) {
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
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goto fail4;
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}
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devs++;
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return err;
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fail4:
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
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mantis_dma_exit(mantis);
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fail3:
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
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mantis_i2c_exit(mantis);
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fail2:
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
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mantis_pci_exit(mantis);
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fail1:
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
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kfree(mantis);
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fail0:
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return err;
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}
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static void hopper_pci_remove(struct pci_dev *pdev)
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{
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struct mantis_pci *mantis = pci_get_drvdata(pdev);
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if (mantis) {
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mantis_dvb_exit(mantis);
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mantis_dma_exit(mantis);
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mantis_i2c_exit(mantis);
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mantis_pci_exit(mantis);
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kfree(mantis);
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}
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return;
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}
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static const struct pci_device_id hopper_pci_table[] = {
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MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config,
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NULL),
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{ }
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};
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MODULE_DEVICE_TABLE(pci, hopper_pci_table);
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static struct pci_driver hopper_pci_driver = {
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.name = DRIVER_NAME,
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.id_table = hopper_pci_table,
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.probe = hopper_pci_probe,
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.remove = hopper_pci_remove,
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};
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module_pci_driver(hopper_pci_driver);
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MODULE_DESCRIPTION("HOPPER driver");
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MODULE_AUTHOR("Manu Abraham");
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MODULE_LICENSE("GPL");
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