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 
42 static unsigned int verbose;
43 module_param(verbose, int, 0644);
44 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
45 
46 static int devs;
47 
48 #define DRIVER_NAME	"Mantis"
49 
50 static 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 
mantis_irq_handler(int irq,void * dev_id)63 static 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 
mantis_pci_probe(struct pci_dev * pdev,const struct pci_device_id * pci_id)153 static 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 
229 err_input_exit:
230 	mantis_input_exit(mantis);
231 
232 err_dvb_exit:
233 	mantis_dvb_exit(mantis);
234 
235 err_dma_exit:
236 	mantis_dma_exit(mantis);
237 
238 err_i2c_exit:
239 	mantis_i2c_exit(mantis);
240 
241 err_pci_exit:
242 	mantis_pci_exit(mantis);
243 
244 err_free_mantis:
245 	kfree(mantis);
246 
247 	return err;
248 }
249 
mantis_pci_remove(struct pci_dev * pdev)250 static 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 
267 static 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 
293 MODULE_DEVICE_TABLE(pci, mantis_pci_table);
294 
295 static 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 
302 module_pci_driver(mantis_pci_driver);
303 
304 MODULE_DESCRIPTION("MANTIS driver");
305 MODULE_AUTHOR("Manu Abraham");
306 MODULE_LICENSE("GPL");
307