1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 Hopper PCI bridge driver 4 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 33 static unsigned int verbose; 34 module_param(verbose, int, 0644); 35 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)"); 36 37 #define DRIVER_NAME "Hopper" 38 39 static 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 52 static int devs; 53 54 static 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 tasklet_schedule(&mantis->tasklet); 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 } 143 144 static 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; 207 208 fail4: 209 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err); 210 mantis_dma_exit(mantis); 211 212 fail3: 213 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err); 214 mantis_i2c_exit(mantis); 215 216 fail2: 217 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err); 218 mantis_pci_exit(mantis); 219 220 fail1: 221 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err); 222 kfree(mantis); 223 224 fail0: 225 return err; 226 } 227 228 static 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 } 242 243 static const struct pci_device_id hopper_pci_table[] = { 244 MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config, 245 NULL), 246 { } 247 }; 248 249 MODULE_DEVICE_TABLE(pci, hopper_pci_table); 250 251 static 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 }; 257 258 module_pci_driver(hopper_pci_driver); 259 260 MODULE_DESCRIPTION("HOPPER driver"); 261 MODULE_AUTHOR("Manu Abraham"); 262 MODULE_LICENSE("GPL"); 263