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
45static unsigned int verbose;
46module_param(verbose, int, 0644);
47MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
48
49#define DRIVER_NAME	"Hopper"
50
51static 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
64static int devs;
65
66static 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		schedule_work(&mantis->uart_work);
110	}
111	if (stat & MANTIS_INT_OCERR) {
112		dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
113	}
114	if (stat & MANTIS_INT_PABORT) {
115		dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
116	}
117	if (stat & MANTIS_INT_RIPERR) {
118		dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
119	}
120	if (stat & MANTIS_INT_PPERR) {
121		dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
122	}
123	if (stat & MANTIS_INT_FTRGT) {
124		dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
125	}
126	if (stat & MANTIS_INT_RISCI) {
127		dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
128		mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
129		tasklet_schedule(&mantis->tasklet);
130	}
131	if (stat & MANTIS_INT_I2CDONE) {
132		dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
133		wake_up(&mantis->i2c_wq);
134	}
135	mmwrite(stat, MANTIS_INT_STAT);
136	stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
137		  MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
138		  MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
139		  MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
140		  MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
141		  MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1	   |
142		  MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
143		  MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
144		  MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
145		  MANTIS_INT_RISCI);
146
147	if (stat)
148		dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
149
150	dprintk(MANTIS_DEBUG, 0, "\n");
151	return IRQ_HANDLED;
152}
153
154static int hopper_pci_probe(struct pci_dev *pdev,
155			    const struct pci_device_id *pci_id)
156{
157	struct mantis_pci *mantis;
158	struct mantis_hwconfig *config;
159	int err = 0;
160
161	mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
162	if (mantis == NULL) {
163		printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
164		err = -ENOMEM;
165		goto fail0;
166	}
167
168	mantis->num		= devs;
169	mantis->verbose		= verbose;
170	mantis->pdev		= pdev;
171	config			= (struct mantis_hwconfig *) pci_id->driver_data;
172	config->irq_handler	= &hopper_irq_handler;
173	mantis->hwconfig	= config;
174
175	err = mantis_pci_init(mantis);
176	if (err) {
177		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
178		goto fail1;
179	}
180
181	err = mantis_stream_control(mantis, STREAM_TO_HIF);
182	if (err < 0) {
183		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
184		goto fail1;
185	}
186
187	err = mantis_i2c_init(mantis);
188	if (err < 0) {
189		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
190		goto fail2;
191	}
192
193	err = mantis_get_mac(mantis);
194	if (err < 0) {
195		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
196		goto fail2;
197	}
198
199	err = mantis_dma_init(mantis);
200	if (err < 0) {
201		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
202		goto fail3;
203	}
204
205	err = mantis_dvb_init(mantis);
206	if (err < 0) {
207		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
208		goto fail4;
209	}
210	devs++;
211
212	return err;
213
214fail4:
215	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
216	mantis_dma_exit(mantis);
217
218fail3:
219	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
220	mantis_i2c_exit(mantis);
221
222fail2:
223	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
224	mantis_pci_exit(mantis);
225
226fail1:
227	dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
228	kfree(mantis);
229
230fail0:
231	return err;
232}
233
234static void hopper_pci_remove(struct pci_dev *pdev)
235{
236	struct mantis_pci *mantis = pci_get_drvdata(pdev);
237
238	if (mantis) {
239		mantis_dvb_exit(mantis);
240		mantis_dma_exit(mantis);
241		mantis_i2c_exit(mantis);
242		mantis_pci_exit(mantis);
243		kfree(mantis);
244	}
245	return;
246
247}
248
249static struct pci_device_id hopper_pci_table[] = {
250	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config),
251	{ }
252};
253
254MODULE_DEVICE_TABLE(pci, hopper_pci_table);
255
256static struct pci_driver hopper_pci_driver = {
257	.name		= DRIVER_NAME,
258	.id_table	= hopper_pci_table,
259	.probe		= hopper_pci_probe,
260	.remove		= hopper_pci_remove,
261};
262
263module_pci_driver(hopper_pci_driver);
264
265MODULE_DESCRIPTION("HOPPER driver");
266MODULE_AUTHOR("Manu Abraham");
267MODULE_LICENSE("GPL");
268