1 /*
2 	Hopper 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 
29 #include "dmxdev.h"
30 #include "dvbdev.h"
31 #include "dvb_demux.h"
32 #include "dvb_frontend.h"
33 #include "dvb_net.h"
34 
35 #include "mantis_common.h"
36 #include "hopper_vp3028.h"
37 #include "mantis_dma.h"
38 #include "mantis_dvb.h"
39 #include "mantis_uart.h"
40 #include "mantis_ioc.h"
41 #include "mantis_pci.h"
42 #include "mantis_i2c.h"
43 #include "mantis_reg.h"
44 
45 static unsigned int verbose;
46 module_param(verbose, int, 0644);
47 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
48 
49 #define DRIVER_NAME	"Hopper"
50 
51 static char *label[10] = {
52 	"DMA",
53 	"IRQ-0",
54 	"IRQ-1",
55 	"OCERR",
56 	"PABRT",
57 	"RIPRR",
58 	"PPERR",
59 	"FTRGT",
60 	"RISCI",
61 	"RACK"
62 };
63 
64 static int devs;
65 
66 static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
67 {
68 	u32 stat = 0, mask = 0;
69 	u32 rst_stat = 0, rst_mask = 0;
70 
71 	struct mantis_pci *mantis;
72 	struct mantis_ca *ca;
73 
74 	mantis = (struct mantis_pci *) dev_id;
75 	if (unlikely(mantis == NULL)) {
76 		dprintk(MANTIS_ERROR, 1, "Mantis == NULL");
77 		return IRQ_NONE;
78 	}
79 	ca = mantis->mantis_ca;
80 
81 	stat = mmread(MANTIS_INT_STAT);
82 	mask = mmread(MANTIS_INT_MASK);
83 	if (!(stat & mask))
84 		return IRQ_NONE;
85 
86 	rst_mask  = MANTIS_GPIF_WRACK  |
87 		    MANTIS_GPIF_OTHERR |
88 		    MANTIS_SBUF_WSTO   |
89 		    MANTIS_GPIF_EXTIRQ;
90 
91 	rst_stat  = mmread(MANTIS_GPIF_STATUS);
92 	rst_stat &= rst_mask;
93 	mmwrite(rst_stat, MANTIS_GPIF_STATUS);
94 
95 	mantis->mantis_int_stat = stat;
96 	mantis->mantis_int_mask = mask;
97 	dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
98 	if (stat & MANTIS_INT_RISCEN) {
99 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
100 	}
101 	if (stat & MANTIS_INT_IRQ0) {
102 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
103 		mantis->gpif_status = rst_stat;
104 		wake_up(&ca->hif_write_wq);
105 		schedule_work(&ca->hif_evm_work);
106 	}
107 	if (stat & MANTIS_INT_IRQ1) {
108 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
109 		spin_lock(&mantis->intmask_lock);
110 		mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ1,
111 			MANTIS_INT_MASK);
112 		spin_unlock(&mantis->intmask_lock);
113 		schedule_work(&mantis->uart_work);
114 	}
115 	if (stat & MANTIS_INT_OCERR) {
116 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
117 	}
118 	if (stat & MANTIS_INT_PABORT) {
119 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
120 	}
121 	if (stat & MANTIS_INT_RIPERR) {
122 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
123 	}
124 	if (stat & MANTIS_INT_PPERR) {
125 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
126 	}
127 	if (stat & MANTIS_INT_FTRGT) {
128 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
129 	}
130 	if (stat & MANTIS_INT_RISCI) {
131 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
132 		mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
133 		tasklet_schedule(&mantis->tasklet);
134 	}
135 	if (stat & MANTIS_INT_I2CDONE) {
136 		dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
137 		wake_up(&mantis->i2c_wq);
138 	}
139 	mmwrite(stat, MANTIS_INT_STAT);
140 	stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
141 		  MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
142 		  MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
143 		  MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
144 		  MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
145 		  MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1	   |
146 		  MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
147 		  MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
148 		  MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
149 		  MANTIS_INT_RISCI);
150 
151 	if (stat)
152 		dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
153 
154 	dprintk(MANTIS_DEBUG, 0, "\n");
155 	return IRQ_HANDLED;
156 }
157 
158 static int hopper_pci_probe(struct pci_dev *pdev,
159 			    const struct pci_device_id *pci_id)
160 {
161 	struct mantis_pci_drvdata *drvdata;
162 	struct mantis_pci *mantis;
163 	struct mantis_hwconfig *config;
164 	int err = 0;
165 
166 	mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
167 	if (mantis == NULL) {
168 		printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
169 		err = -ENOMEM;
170 		goto fail0;
171 	}
172 
173 	drvdata			= (void *)pci_id->driver_data;
174 	mantis->num		= devs;
175 	mantis->verbose		= verbose;
176 	mantis->pdev		= pdev;
177 	config			= drvdata->hwconfig;
178 	config->irq_handler	= &hopper_irq_handler;
179 	mantis->hwconfig	= config;
180 	mantis->rc_map_name	= drvdata->rc_map_name;
181 
182 	spin_lock_init(&mantis->intmask_lock);
183 
184 	err = mantis_pci_init(mantis);
185 	if (err) {
186 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
187 		goto fail1;
188 	}
189 
190 	err = mantis_stream_control(mantis, STREAM_TO_HIF);
191 	if (err < 0) {
192 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
193 		goto fail1;
194 	}
195 
196 	err = mantis_i2c_init(mantis);
197 	if (err < 0) {
198 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
199 		goto fail2;
200 	}
201 
202 	err = mantis_get_mac(mantis);
203 	if (err < 0) {
204 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
205 		goto fail2;
206 	}
207 
208 	err = mantis_dma_init(mantis);
209 	if (err < 0) {
210 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
211 		goto fail3;
212 	}
213 
214 	err = mantis_dvb_init(mantis);
215 	if (err < 0) {
216 		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
217 		goto fail4;
218 	}
219 	devs++;
220 
221 	return err;
222 
223 fail4:
224 	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
225 	mantis_dma_exit(mantis);
226 
227 fail3:
228 	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
229 	mantis_i2c_exit(mantis);
230 
231 fail2:
232 	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
233 	mantis_pci_exit(mantis);
234 
235 fail1:
236 	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
237 	kfree(mantis);
238 
239 fail0:
240 	return err;
241 }
242 
243 static void hopper_pci_remove(struct pci_dev *pdev)
244 {
245 	struct mantis_pci *mantis = pci_get_drvdata(pdev);
246 
247 	if (mantis) {
248 		mantis_dvb_exit(mantis);
249 		mantis_dma_exit(mantis);
250 		mantis_i2c_exit(mantis);
251 		mantis_pci_exit(mantis);
252 		kfree(mantis);
253 	}
254 	return;
255 
256 }
257 
258 static struct pci_device_id hopper_pci_table[] = {
259 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config,
260 		   NULL),
261 	{ }
262 };
263 
264 MODULE_DEVICE_TABLE(pci, hopper_pci_table);
265 
266 static struct pci_driver hopper_pci_driver = {
267 	.name		= DRIVER_NAME,
268 	.id_table	= hopper_pci_table,
269 	.probe		= hopper_pci_probe,
270 	.remove		= hopper_pci_remove,
271 };
272 
273 module_pci_driver(hopper_pci_driver);
274 
275 MODULE_DESCRIPTION("HOPPER driver");
276 MODULE_AUTHOR("Manu Abraham");
277 MODULE_LICENSE("GPL");
278