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/kernel.h>
22 
23 #include <linux/signal.h>
24 #include <linux/sched.h>
25 #include <linux/interrupt.h>
26 #include <asm/io.h>
27 
28 #include "dmxdev.h"
29 #include "dvbdev.h"
30 #include "dvb_demux.h"
31 #include "dvb_frontend.h"
32 #include "dvb_net.h"
33 
34 #include "mantis_common.h"
35 #include "mantis_link.h"
36 #include "mantis_hif.h"
37 #include "mantis_reg.h"
38 
39 static void mantis_hifevm_work(struct work_struct *work)
40 {
41 	struct mantis_ca *ca = container_of(work, struct mantis_ca, hif_evm_work);
42 	struct mantis_pci *mantis = ca->ca_priv;
43 
44 	u32 gpif_stat;
45 
46 	gpif_stat = mmread(MANTIS_GPIF_STATUS);
47 
48 	if (gpif_stat & MANTIS_GPIF_DETSTAT) {
49 		if (gpif_stat & MANTIS_CARD_PLUGIN) {
50 			dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Plugin", mantis->num);
51 			mmwrite(0xdada0000, MANTIS_CARD_RESET);
52 			mantis_event_cam_plugin(ca);
53 			dvb_ca_en50221_camchange_irq(&ca->en50221,
54 						     0,
55 						     DVB_CA_EN50221_CAMCHANGE_INSERTED);
56 		}
57 	} else {
58 		if (gpif_stat & MANTIS_CARD_PLUGOUT) {
59 			dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Unplug", mantis->num);
60 			mmwrite(0xdada0000, MANTIS_CARD_RESET);
61 			mantis_event_cam_unplug(ca);
62 			dvb_ca_en50221_camchange_irq(&ca->en50221,
63 						     0,
64 						     DVB_CA_EN50221_CAMCHANGE_REMOVED);
65 		}
66 	}
67 
68 	if (mantis->gpif_status & MANTIS_GPIF_EXTIRQ)
69 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Ext IRQ", mantis->num);
70 
71 	if (mantis->gpif_status & MANTIS_SBUF_WSTO)
72 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Timeout", mantis->num);
73 
74 	if (mantis->gpif_status & MANTIS_GPIF_OTHERR)
75 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Alignment Error", mantis->num);
76 
77 	if (gpif_stat & MANTIS_SBUF_OVFLW)
78 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Overflow", mantis->num);
79 
80 	if (gpif_stat & MANTIS_GPIF_BRRDY)
81 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Read Ready", mantis->num);
82 
83 	if (gpif_stat & MANTIS_GPIF_INTSTAT)
84 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): GPIF IRQ", mantis->num);
85 
86 	if (gpif_stat & MANTIS_SBUF_EMPTY)
87 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Empty", mantis->num);
88 
89 	if (gpif_stat & MANTIS_SBUF_OPDONE) {
90 		dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer operation complete", mantis->num);
91 		ca->sbuf_status = MANTIS_SBUF_DATA_AVAIL;
92 		ca->hif_event = MANTIS_SBUF_OPDONE;
93 		wake_up(&ca->hif_opdone_wq);
94 	}
95 }
96 
97 int mantis_evmgr_init(struct mantis_ca *ca)
98 {
99 	struct mantis_pci *mantis = ca->ca_priv;
100 
101 	dprintk(MANTIS_DEBUG, 1, "Initializing Mantis Host I/F Event manager");
102 	INIT_WORK(&ca->hif_evm_work, mantis_hifevm_work);
103 	mantis_pcmcia_init(ca);
104 	schedule_work(&ca->hif_evm_work);
105 	mantis_hif_init(ca);
106 	return 0;
107 }
108 
109 void mantis_evmgr_exit(struct mantis_ca *ca)
110 {
111 	struct mantis_pci *mantis = ca->ca_priv;
112 
113 	dprintk(MANTIS_DEBUG, 1, "Mantis Host I/F Event manager exiting");
114 	flush_work(&ca->hif_evm_work);
115 	mantis_hif_exit(ca);
116 	mantis_pcmcia_exit(ca);
117 }
118