1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3	Mantis PCI bridge driver
4
5	Copyright (C) Manu Abraham (abraham.manu@gmail.com)
6
7*/
8
9#include <linux/module.h>
10#include <linux/kernel.h>
11#include <linux/pci.h>
12#include <linux/slab.h>
13#include <asm/irq.h>
14#include <linux/interrupt.h>
15#include <media/rc-map.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
25#include "mantis_vp1033.h"
26#include "mantis_vp1034.h"
27#include "mantis_vp1041.h"
28#include "mantis_vp2033.h"
29#include "mantis_vp2040.h"
30#include "mantis_vp3030.h"
31
32#include "mantis_dma.h"
33#include "mantis_ca.h"
34#include "mantis_dvb.h"
35#include "mantis_uart.h"
36#include "mantis_ioc.h"
37#include "mantis_pci.h"
38#include "mantis_i2c.h"
39#include "mantis_reg.h"
40#include "mantis_input.h"
41
42static unsigned int verbose;
43module_param(verbose, int, 0644);
44MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
45
46static int devs;
47
48#define DRIVER_NAME	"Mantis"
49
50static char *label[10] = {
51	"DMA",
52	"IRQ-0",
53	"IRQ-1",
54	"OCERR",
55	"PABRT",
56	"RIPRR",
57	"PPERR",
58	"FTRGT",
59	"RISCI",
60	"RACK"
61};
62
63static irqreturn_t mantis_irq_handler(int irq, void *dev_id)
64{
65	u32 stat = 0, mask = 0;
66	u32 rst_stat = 0, rst_mask = 0;
67
68	struct mantis_pci *mantis;
69	struct mantis_ca *ca;
70
71	mantis = (struct mantis_pci *) dev_id;
72	if (unlikely(!mantis))
73		return IRQ_NONE;
74	ca = mantis->mantis_ca;
75
76	stat = mmread(MANTIS_INT_STAT);
77	mask = mmread(MANTIS_INT_MASK);
78	if (!(stat & mask))
79		return IRQ_NONE;
80
81	rst_mask  = MANTIS_GPIF_WRACK  |
82		    MANTIS_GPIF_OTHERR |
83		    MANTIS_SBUF_WSTO   |
84		    MANTIS_GPIF_EXTIRQ;
85
86	rst_stat  = mmread(MANTIS_GPIF_STATUS);
87	rst_stat &= rst_mask;
88	mmwrite(rst_stat, MANTIS_GPIF_STATUS);
89
90	mantis->mantis_int_stat = stat;
91	mantis->mantis_int_mask = mask;
92	dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
93	if (stat & MANTIS_INT_RISCEN) {
94		dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
95	}
96	if (stat & MANTIS_INT_IRQ0) {
97		dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
98		mantis->gpif_status = rst_stat;
99		wake_up(&ca->hif_write_wq);
100		schedule_work(&ca->hif_evm_work);
101	}
102	if (stat & MANTIS_INT_IRQ1) {
103		dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
104		spin_lock(&mantis->intmask_lock);
105		mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ1,
106			MANTIS_INT_MASK);
107		spin_unlock(&mantis->intmask_lock);
108		schedule_work(&mantis->uart_work);
109	}
110	if (stat & MANTIS_INT_OCERR) {
111		dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
112	}
113	if (stat & MANTIS_INT_PABORT) {
114		dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
115	}
116	if (stat & MANTIS_INT_RIPERR) {
117		dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
118	}
119	if (stat & MANTIS_INT_PPERR) {
120		dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
121	}
122	if (stat & MANTIS_INT_FTRGT) {
123		dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
124	}
125	if (stat & MANTIS_INT_RISCI) {
126		dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
127		mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
128		tasklet_schedule(&mantis->tasklet);
129	}
130	if (stat & MANTIS_INT_I2CDONE) {
131		dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
132		wake_up(&mantis->i2c_wq);
133	}
134	mmwrite(stat, MANTIS_INT_STAT);
135	stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
136		  MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
137		  MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
138		  MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
139		  MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
140		  MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1	   |
141		  MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
142		  MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
143		  MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
144		  MANTIS_INT_RISCI);
145
146	if (stat)
147		dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
148
149	dprintk(MANTIS_DEBUG, 0, "\n");
150	return IRQ_HANDLED;
151}
152
153static int mantis_pci_probe(struct pci_dev *pdev,
154			    const struct pci_device_id *pci_id)
155{
156	struct mantis_pci_drvdata *drvdata;
157	struct mantis_pci *mantis;
158	struct mantis_hwconfig *config;
159	int err;
160
161	mantis = kzalloc(sizeof(*mantis), GFP_KERNEL);
162	if (!mantis)
163		return -ENOMEM;
164
165	drvdata			= (void *)pci_id->driver_data;
166	mantis->num		= devs;
167	mantis->verbose		= verbose;
168	mantis->pdev		= pdev;
169	config			= drvdata->hwconfig;
170	config->irq_handler	= &mantis_irq_handler;
171	mantis->hwconfig	= config;
172	mantis->rc_map_name	= drvdata->rc_map_name;
173
174	spin_lock_init(&mantis->intmask_lock);
175
176	err = mantis_pci_init(mantis);
177	if (err) {
178		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
179		goto err_free_mantis;
180	}
181
182	err = mantis_stream_control(mantis, STREAM_TO_HIF);
183	if (err < 0) {
184		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
185		goto err_pci_exit;
186	}
187
188	err = mantis_i2c_init(mantis);
189	if (err < 0) {
190		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
191		goto err_pci_exit;
192	}
193
194	err = mantis_get_mac(mantis);
195	if (err < 0) {
196		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
197		goto err_i2c_exit;
198	}
199
200	err = mantis_dma_init(mantis);
201	if (err < 0) {
202		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
203		goto err_i2c_exit;
204	}
205
206	err = mantis_dvb_init(mantis);
207	if (err < 0) {
208		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
209		goto err_dma_exit;
210	}
211
212	err = mantis_input_init(mantis);
213	if (err < 0) {
214		dprintk(MANTIS_ERROR, 1,
215			"ERROR: Mantis DVB initialization failed <%d>", err);
216		goto err_dvb_exit;
217	}
218
219	err = mantis_uart_init(mantis);
220	if (err < 0) {
221		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis UART initialization failed <%d>", err);
222		goto err_input_exit;
223	}
224
225	devs++;
226
227	return 0;
228
229err_input_exit:
230	mantis_input_exit(mantis);
231
232err_dvb_exit:
233	mantis_dvb_exit(mantis);
234
235err_dma_exit:
236	mantis_dma_exit(mantis);
237
238err_i2c_exit:
239	mantis_i2c_exit(mantis);
240
241err_pci_exit:
242	mantis_pci_exit(mantis);
243
244err_free_mantis:
245	kfree(mantis);
246
247	return err;
248}
249
250static void mantis_pci_remove(struct pci_dev *pdev)
251{
252	struct mantis_pci *mantis = pci_get_drvdata(pdev);
253
254	if (mantis) {
255
256		mantis_uart_exit(mantis);
257		mantis_input_exit(mantis);
258		mantis_dvb_exit(mantis);
259		mantis_dma_exit(mantis);
260		mantis_i2c_exit(mantis);
261		mantis_pci_exit(mantis);
262		kfree(mantis);
263	}
264	return;
265}
266
267static const struct pci_device_id mantis_pci_table[] = {
268	MAKE_ENTRY(TECHNISAT, CABLESTAR_HD2, &vp2040_config,
269		   RC_MAP_TECHNISAT_TS35),
270	MAKE_ENTRY(TECHNISAT, SKYSTAR_HD2_10, &vp1041_config,
271		   NULL),
272	MAKE_ENTRY(TECHNISAT, SKYSTAR_HD2_20, &vp1041_config,
273		   NULL),
274	MAKE_ENTRY(TERRATEC, CINERGY_C, &vp2040_config,
275		   RC_MAP_TERRATEC_CINERGY_C_PCI),
276	MAKE_ENTRY(TERRATEC, CINERGY_S2_PCI_HD, &vp1041_config,
277		   RC_MAP_TERRATEC_CINERGY_S2_HD),
278	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_1033_DVB_S, &vp1033_config,
279		   NULL),
280	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_1034_DVB_S, &vp1034_config,
281		   NULL),
282	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_1041_DVB_S2, &vp1041_config,
283		   RC_MAP_TWINHAN_DTV_CAB_CI),
284	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_2033_DVB_C, &vp2033_config,
285		   RC_MAP_TWINHAN_DTV_CAB_CI),
286	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_2040_DVB_C, &vp2040_config,
287		   NULL),
288	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3030_DVB_T, &vp3030_config,
289		   NULL),
290	{ }
291};
292
293MODULE_DEVICE_TABLE(pci, mantis_pci_table);
294
295static struct pci_driver mantis_pci_driver = {
296	.name		= DRIVER_NAME,
297	.id_table	= mantis_pci_table,
298	.probe		= mantis_pci_probe,
299	.remove		= mantis_pci_remove,
300};
301
302module_pci_driver(mantis_pci_driver);
303
304MODULE_DESCRIPTION("MANTIS driver");
305MODULE_AUTHOR("Manu Abraham");
306MODULE_LICENSE("GPL");
307