hopper_cards.c

  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
 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");