1 /*
2 	Mantis PCI bridge driver
3 
4 	Copyright (C) Manu Abraham (abraham.manu@gmail.com)
5 
6 	This program is free software; you can redistribute it and/or modify
7 	it under the terms of the GNU General Public License as published by
8 	the Free Software Foundation; either version 2 of the License, or
9 	(at your option) any later version.
10 
11 	This program is distributed in the hope that it will be useful,
12 	but WITHOUT ANY WARRANTY; without even the implied warranty of
13 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 	GNU General Public License for more details.
15 
16 	You should have received a copy of the GNU General Public License
17 	along with this program; if not, write to the Free Software
18 	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20 
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/kernel.h>
24 #include <linux/pci.h>
25 #include <linux/slab.h>
26 #include <asm/irq.h>
27 #include <linux/interrupt.h>
28 #include <media/rc-map.h>
29 
30 #include "dmxdev.h"
31 #include "dvbdev.h"
32 #include "dvb_demux.h"
33 #include "dvb_frontend.h"
34 #include "dvb_net.h"
35 
36 #include "mantis_common.h"
37 
38 #include "mantis_vp1033.h"
39 #include "mantis_vp1034.h"
40 #include "mantis_vp1041.h"
41 #include "mantis_vp2033.h"
42 #include "mantis_vp2040.h"
43 #include "mantis_vp3030.h"
44 
45 #include "mantis_dma.h"
46 #include "mantis_ca.h"
47 #include "mantis_dvb.h"
48 #include "mantis_uart.h"
49 #include "mantis_ioc.h"
50 #include "mantis_pci.h"
51 #include "mantis_i2c.h"
52 #include "mantis_reg.h"
53 #include "mantis_input.h"
54 
55 static unsigned int verbose;
56 module_param(verbose, int, 0644);
57 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
58 
59 static int devs;
60 
61 #define DRIVER_NAME	"Mantis"
62 
63 static char *label[10] = {
64 	"DMA",
65 	"IRQ-0",
66 	"IRQ-1",
67 	"OCERR",
68 	"PABRT",
69 	"RIPRR",
70 	"PPERR",
71 	"FTRGT",
72 	"RISCI",
73 	"RACK"
74 };
75 
76 static irqreturn_t mantis_irq_handler(int irq, void *dev_id)
77 {
78 	u32 stat = 0, mask = 0;
79 	u32 rst_stat = 0, rst_mask = 0;
80 
81 	struct mantis_pci *mantis;
82 	struct mantis_ca *ca;
83 
84 	mantis = (struct mantis_pci *) dev_id;
85 	if (unlikely(mantis == NULL)) {
86 		dprintk(MANTIS_ERROR, 1, "Mantis == NULL");
87 		return IRQ_NONE;
88 	}
89 	ca = mantis->mantis_ca;
90 
91 	stat = mmread(MANTIS_INT_STAT);
92 	mask = mmread(MANTIS_INT_MASK);
93 	if (!(stat & mask))
94 		return IRQ_NONE;
95 
96 	rst_mask  = MANTIS_GPIF_WRACK  |
97 		    MANTIS_GPIF_OTHERR |
98 		    MANTIS_SBUF_WSTO   |
99 		    MANTIS_GPIF_EXTIRQ;
100 
101 	rst_stat  = mmread(MANTIS_GPIF_STATUS);
102 	rst_stat &= rst_mask;
103 	mmwrite(rst_stat, MANTIS_GPIF_STATUS);
104 
105 	mantis->mantis_int_stat = stat;
106 	mantis->mantis_int_mask = mask;
107 	dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
108 	if (stat & MANTIS_INT_RISCEN) {
109 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
110 	}
111 	if (stat & MANTIS_INT_IRQ0) {
112 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
113 		mantis->gpif_status = rst_stat;
114 		wake_up(&ca->hif_write_wq);
115 		schedule_work(&ca->hif_evm_work);
116 	}
117 	if (stat & MANTIS_INT_IRQ1) {
118 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
119 		spin_lock(&mantis->intmask_lock);
120 		mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ1,
121 			MANTIS_INT_MASK);
122 		spin_unlock(&mantis->intmask_lock);
123 		schedule_work(&mantis->uart_work);
124 	}
125 	if (stat & MANTIS_INT_OCERR) {
126 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
127 	}
128 	if (stat & MANTIS_INT_PABORT) {
129 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
130 	}
131 	if (stat & MANTIS_INT_RIPERR) {
132 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
133 	}
134 	if (stat & MANTIS_INT_PPERR) {
135 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
136 	}
137 	if (stat & MANTIS_INT_FTRGT) {
138 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
139 	}
140 	if (stat & MANTIS_INT_RISCI) {
141 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
142 		mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
143 		tasklet_schedule(&mantis->tasklet);
144 	}
145 	if (stat & MANTIS_INT_I2CDONE) {
146 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
147 		wake_up(&mantis->i2c_wq);
148 	}
149 	mmwrite(stat, MANTIS_INT_STAT);
150 	stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
151 		  MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
152 		  MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
153 		  MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
154 		  MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
155 		  MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1	   |
156 		  MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
157 		  MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
158 		  MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
159 		  MANTIS_INT_RISCI);
160 
161 	if (stat)
162 		dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
163 
164 	dprintk(MANTIS_DEBUG, 0, "\n");
165 	return IRQ_HANDLED;
166 }
167 
168 static int mantis_pci_probe(struct pci_dev *pdev,
169 			    const struct pci_device_id *pci_id)
170 {
171 	struct mantis_pci_drvdata *drvdata;
172 	struct mantis_pci *mantis;
173 	struct mantis_hwconfig *config;
174 	int err = 0;
175 
176 	mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
177 	if (mantis == NULL) {
178 		printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
179 		return -ENOMEM;
180 	}
181 
182 	drvdata			= (void *)pci_id->driver_data;
183 	mantis->num		= devs;
184 	mantis->verbose		= verbose;
185 	mantis->pdev		= pdev;
186 	config			= drvdata->hwconfig;
187 	config->irq_handler	= &mantis_irq_handler;
188 	mantis->hwconfig	= config;
189 	mantis->rc_map_name	= drvdata->rc_map_name;
190 
191 	spin_lock_init(&mantis->intmask_lock);
192 
193 	err = mantis_pci_init(mantis);
194 	if (err) {
195 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
196 		goto err_free_mantis;
197 	}
198 
199 	err = mantis_stream_control(mantis, STREAM_TO_HIF);
200 	if (err < 0) {
201 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
202 		goto err_pci_exit;
203 	}
204 
205 	err = mantis_i2c_init(mantis);
206 	if (err < 0) {
207 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
208 		goto err_pci_exit;
209 	}
210 
211 	err = mantis_get_mac(mantis);
212 	if (err < 0) {
213 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
214 		goto err_i2c_exit;
215 	}
216 
217 	err = mantis_dma_init(mantis);
218 	if (err < 0) {
219 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
220 		goto err_i2c_exit;
221 	}
222 
223 	err = mantis_dvb_init(mantis);
224 	if (err < 0) {
225 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
226 		goto err_dma_exit;
227 	}
228 
229 	err = mantis_input_init(mantis);
230 	if (err < 0) {
231 		dprintk(MANTIS_ERROR, 1,
232 			"ERROR: Mantis DVB initialization failed <%d>", err);
233 		goto err_dvb_exit;
234 	}
235 
236 	err = mantis_uart_init(mantis);
237 	if (err < 0) {
238 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis UART initialization failed <%d>", err);
239 		goto err_input_exit;
240 	}
241 
242 	devs++;
243 
244 	return 0;
245 
246 err_input_exit:
247 	mantis_input_exit(mantis);
248 
249 err_dvb_exit:
250 	mantis_dvb_exit(mantis);
251 
252 err_dma_exit:
253 	mantis_dma_exit(mantis);
254 
255 err_i2c_exit:
256 	mantis_i2c_exit(mantis);
257 
258 err_pci_exit:
259 	mantis_pci_exit(mantis);
260 
261 err_free_mantis:
262 	kfree(mantis);
263 
264 	return err;
265 }
266 
267 static void mantis_pci_remove(struct pci_dev *pdev)
268 {
269 	struct mantis_pci *mantis = pci_get_drvdata(pdev);
270 
271 	if (mantis) {
272 
273 		mantis_uart_exit(mantis);
274 		mantis_input_exit(mantis);
275 		mantis_dvb_exit(mantis);
276 		mantis_dma_exit(mantis);
277 		mantis_i2c_exit(mantis);
278 		mantis_pci_exit(mantis);
279 		kfree(mantis);
280 	}
281 	return;
282 }
283 
284 static const struct pci_device_id mantis_pci_table[] = {
285 	MAKE_ENTRY(TECHNISAT, CABLESTAR_HD2, &vp2040_config,
286 		   RC_MAP_TECHNISAT_TS35),
287 	MAKE_ENTRY(TECHNISAT, SKYSTAR_HD2_10, &vp1041_config,
288 		   NULL),
289 	MAKE_ENTRY(TECHNISAT, SKYSTAR_HD2_20, &vp1041_config,
290 		   NULL),
291 	MAKE_ENTRY(TERRATEC, CINERGY_C, &vp2040_config,
292 		   RC_MAP_TERRATEC_CINERGY_C_PCI),
293 	MAKE_ENTRY(TERRATEC, CINERGY_S2_PCI_HD, &vp1041_config,
294 		   RC_MAP_TERRATEC_CINERGY_S2_HD),
295 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_1033_DVB_S, &vp1033_config,
296 		   NULL),
297 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_1034_DVB_S, &vp1034_config,
298 		   NULL),
299 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_1041_DVB_S2, &vp1041_config,
300 		   RC_MAP_TWINHAN_DTV_CAB_CI),
301 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_2033_DVB_C, &vp2033_config,
302 		   RC_MAP_TWINHAN_DTV_CAB_CI),
303 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_2040_DVB_C, &vp2040_config,
304 		   NULL),
305 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3030_DVB_T, &vp3030_config,
306 		   NULL),
307 	{ }
308 };
309 
310 MODULE_DEVICE_TABLE(pci, mantis_pci_table);
311 
312 static struct pci_driver mantis_pci_driver = {
313 	.name		= DRIVER_NAME,
314 	.id_table	= mantis_pci_table,
315 	.probe		= mantis_pci_probe,
316 	.remove		= mantis_pci_remove,
317 };
318 
319 module_pci_driver(mantis_pci_driver);
320 
321 MODULE_DESCRIPTION("MANTIS driver");
322 MODULE_AUTHOR("Manu Abraham");
323 MODULE_LICENSE("GPL");
324