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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 Hopper PCI bridge driver4 5 Copyright (C) Manu Abraham (abraham.manu@gmail.com)6 7*/8 9#include <linux/module.h>10#include <linux/moduleparam.h>11#include <linux/kernel.h>12#include <linux/pci.h>13#include <linux/slab.h>14#include <asm/irq.h>15#include <linux/interrupt.h>16 17#include <media/dmxdev.h>18#include <media/dvbdev.h>19#include <media/dvb_demux.h>20#include <media/dvb_frontend.h>21#include <media/dvb_net.h>22 23#include "mantis_common.h"24#include "hopper_vp3028.h"25#include "mantis_dma.h"26#include "mantis_dvb.h"27#include "mantis_uart.h"28#include "mantis_ioc.h"29#include "mantis_pci.h"30#include "mantis_i2c.h"31#include "mantis_reg.h"32 33static unsigned int verbose;34module_param(verbose, int, 0644);35MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");36 37#define DRIVER_NAME "Hopper"38 39static char *label[10] = {40 "DMA",41 "IRQ-0",42 "IRQ-1",43 "OCERR",44 "PABRT",45 "RIPRR",46 "PPERR",47 "FTRGT",48 "RISCI",49 "RACK"50};51 52static int devs;53 54static irqreturn_t hopper_irq_handler(int irq, void *dev_id)55{56 u32 stat = 0, mask = 0;57 u32 rst_stat = 0, rst_mask = 0;58 59 struct mantis_pci *mantis;60 struct mantis_ca *ca;61 62 mantis = (struct mantis_pci *) dev_id;63 if (unlikely(!mantis))64 return IRQ_NONE;65 ca = mantis->mantis_ca;66 67 stat = mmread(MANTIS_INT_STAT);68 mask = mmread(MANTIS_INT_MASK);69 if (!(stat & mask))70 return IRQ_NONE;71 72 rst_mask = MANTIS_GPIF_WRACK |73 MANTIS_GPIF_OTHERR |74 MANTIS_SBUF_WSTO |75 MANTIS_GPIF_EXTIRQ;76 77 rst_stat = mmread(MANTIS_GPIF_STATUS);78 rst_stat &= rst_mask;79 mmwrite(rst_stat, MANTIS_GPIF_STATUS);80 81 mantis->mantis_int_stat = stat;82 mantis->mantis_int_mask = mask;83 dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);84 if (stat & MANTIS_INT_RISCEN) {85 dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);86 }87 if (stat & MANTIS_INT_IRQ0) {88 dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);89 mantis->gpif_status = rst_stat;90 wake_up(&ca->hif_write_wq);91 schedule_work(&ca->hif_evm_work);92 }93 if (stat & MANTIS_INT_IRQ1) {94 dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);95 spin_lock(&mantis->intmask_lock);96 mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ1,97 MANTIS_INT_MASK);98 spin_unlock(&mantis->intmask_lock);99 schedule_work(&mantis->uart_work);100 }101 if (stat & MANTIS_INT_OCERR) {102 dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);103 }104 if (stat & MANTIS_INT_PABORT) {105 dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);106 }107 if (stat & MANTIS_INT_RIPERR) {108 dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);109 }110 if (stat & MANTIS_INT_PPERR) {111 dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);112 }113 if (stat & MANTIS_INT_FTRGT) {114 dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);115 }116 if (stat & MANTIS_INT_RISCI) {117 dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);118 mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;119 queue_work(system_bh_wq, &mantis->bh_work);120 }121 if (stat & MANTIS_INT_I2CDONE) {122 dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);123 wake_up(&mantis->i2c_wq);124 }125 mmwrite(stat, MANTIS_INT_STAT);126 stat &= ~(MANTIS_INT_RISCEN | MANTIS_INT_I2CDONE |127 MANTIS_INT_I2CRACK | MANTIS_INT_PCMCIA7 |128 MANTIS_INT_PCMCIA6 | MANTIS_INT_PCMCIA5 |129 MANTIS_INT_PCMCIA4 | MANTIS_INT_PCMCIA3 |130 MANTIS_INT_PCMCIA2 | MANTIS_INT_PCMCIA1 |131 MANTIS_INT_PCMCIA0 | MANTIS_INT_IRQ1 |132 MANTIS_INT_IRQ0 | MANTIS_INT_OCERR |133 MANTIS_INT_PABORT | MANTIS_INT_RIPERR |134 MANTIS_INT_PPERR | MANTIS_INT_FTRGT |135 MANTIS_INT_RISCI);136 137 if (stat)138 dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);139 140 dprintk(MANTIS_DEBUG, 0, "\n");141 return IRQ_HANDLED;142}143 144static int hopper_pci_probe(struct pci_dev *pdev,145 const struct pci_device_id *pci_id)146{147 struct mantis_pci_drvdata *drvdata;148 struct mantis_pci *mantis;149 struct mantis_hwconfig *config;150 int err;151 152 mantis = kzalloc(sizeof(*mantis), GFP_KERNEL);153 if (!mantis) {154 err = -ENOMEM;155 goto fail0;156 }157 158 drvdata = (void *)pci_id->driver_data;159 mantis->num = devs;160 mantis->verbose = verbose;161 mantis->pdev = pdev;162 config = drvdata->hwconfig;163 config->irq_handler = &hopper_irq_handler;164 mantis->hwconfig = config;165 mantis->rc_map_name = drvdata->rc_map_name;166 167 spin_lock_init(&mantis->intmask_lock);168 169 err = mantis_pci_init(mantis);170 if (err) {171 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);172 goto fail1;173 }174 175 err = mantis_stream_control(mantis, STREAM_TO_HIF);176 if (err < 0) {177 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);178 goto fail1;179 }180 181 err = mantis_i2c_init(mantis);182 if (err < 0) {183 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);184 goto fail2;185 }186 187 err = mantis_get_mac(mantis);188 if (err < 0) {189 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);190 goto fail2;191 }192 193 err = mantis_dma_init(mantis);194 if (err < 0) {195 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);196 goto fail3;197 }198 199 err = mantis_dvb_init(mantis);200 if (err < 0) {201 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);202 goto fail4;203 }204 devs++;205 206 return err;207 208fail4:209 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);210 mantis_dma_exit(mantis);211 212fail3:213 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);214 mantis_i2c_exit(mantis);215 216fail2:217 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);218 mantis_pci_exit(mantis);219 220fail1:221 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);222 kfree(mantis);223 224fail0:225 return err;226}227 228static void hopper_pci_remove(struct pci_dev *pdev)229{230 struct mantis_pci *mantis = pci_get_drvdata(pdev);231 232 if (mantis) {233 mantis_dvb_exit(mantis);234 mantis_dma_exit(mantis);235 mantis_i2c_exit(mantis);236 mantis_pci_exit(mantis);237 kfree(mantis);238 }239 return;240 241}242 243static const struct pci_device_id hopper_pci_table[] = {244 MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config,245 NULL),246 { }247};248 249MODULE_DEVICE_TABLE(pci, hopper_pci_table);250 251static struct pci_driver hopper_pci_driver = {252 .name = DRIVER_NAME,253 .id_table = hopper_pci_table,254 .probe = hopper_pci_probe,255 .remove = hopper_pci_remove,256};257 258module_pci_driver(hopper_pci_driver);259 260MODULE_DESCRIPTION("HOPPER driver");261MODULE_AUTHOR("Manu Abraham");262MODULE_LICENSE("GPL");263