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path: root/drivers/isdn/hisax/nj_u.c
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Diffstat (limited to 'drivers/isdn/hisax/nj_u.c')
-rw-r--r--drivers/isdn/hisax/nj_u.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/nj_u.c b/drivers/isdn/hisax/nj_u.c
new file mode 100644
index 000000000000..3d6441e9633c
--- /dev/null
+++ b/drivers/isdn/hisax/nj_u.c
@@ -0,0 +1,244 @@
1/* $Id: nj_u.c,v 2.14.2.3 2004/01/13 14:31:26 keil Exp $
2 *
3 * This software may be used and distributed according to the terms
4 * of the GNU General Public License, incorporated herein by reference.
5 *
6 */
7
8#include <linux/config.h>
9#include <linux/init.h>
10#include "hisax.h"
11#include "icc.h"
12#include "isdnl1.h"
13#include <linux/pci.h>
14#include <linux/interrupt.h>
15#include <linux/ppp_defs.h>
16#include "netjet.h"
17
18const char *NETjet_U_revision = "$Revision: 2.14.2.3 $";
19
20static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off)
21{
22 return(5);
23}
24
25static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value)
26{
27}
28
29static irqreturn_t
30netjet_u_interrupt(int intno, void *dev_id, struct pt_regs *regs)
31{
32 struct IsdnCardState *cs = dev_id;
33 u_char val, sval;
34 u_long flags;
35
36 spin_lock_irqsave(&cs->lock, flags);
37 if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
38 NETJET_ISACIRQ)) {
39 val = NETjet_ReadIC(cs, ICC_ISTA);
40 if (cs->debug & L1_DEB_ISAC)
41 debugl1(cs, "tiger: i1 %x %x", sval, val);
42 if (val) {
43 icc_interrupt(cs, val);
44 NETjet_WriteIC(cs, ICC_MASK, 0xFF);
45 NETjet_WriteIC(cs, ICC_MASK, 0x0);
46 }
47 }
48 /* start new code 13/07/00 GE */
49 /* set bits in sval to indicate which page is free */
50 if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
51 inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
52 /* the 2nd write page is free */
53 sval = 0x08;
54 else /* the 1st write page is free */
55 sval = 0x04;
56 if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
57 inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
58 /* the 2nd read page is free */
59 sval = sval | 0x02;
60 else /* the 1st read page is free */
61 sval = sval | 0x01;
62 if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
63 {
64 if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
65 spin_unlock_irqrestore(&cs->lock, flags);
66 return IRQ_HANDLED;
67 }
68 cs->hw.njet.irqstat0 = sval;
69 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
70 (cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
71 /* we have a read dma int */
72 read_tiger(cs);
73 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
74 (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
75 /* we have a write dma int */
76 write_tiger(cs);
77 /* end new code 13/07/00 GE */
78 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
79 }
80 spin_unlock_irqrestore(&cs->lock, flags);
81 return IRQ_HANDLED;
82}
83
84static void
85reset_netjet_u(struct IsdnCardState *cs)
86{
87 cs->hw.njet.ctrl_reg = 0xff; /* Reset On */
88 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
89 mdelay(10);
90 cs->hw.njet.ctrl_reg = 0x40; /* Reset Off and status read clear */
91 /* now edge triggered for TJ320 GE 13/07/00 */
92 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
93 mdelay(10);
94 cs->hw.njet.auxd = 0xC0;
95 cs->hw.njet.dmactrl = 0;
96 byteout(cs->hw.njet.auxa, 0);
97 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
98 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
99 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
100}
101
102static int
103NETjet_U_card_msg(struct IsdnCardState *cs, int mt, void *arg)
104{
105 u_long flags;
106
107 switch (mt) {
108 case CARD_RESET:
109 spin_lock_irqsave(&cs->lock, flags);
110 reset_netjet_u(cs);
111 spin_unlock_irqrestore(&cs->lock, flags);
112 return(0);
113 case CARD_RELEASE:
114 release_io_netjet(cs);
115 return(0);
116 case CARD_INIT:
117 spin_lock_irqsave(&cs->lock, flags);
118 inittiger(cs);
119 reset_netjet_u(cs);
120 clear_pending_icc_ints(cs);
121 initicc(cs);
122 /* Reenable all IRQ */
123 cs->writeisac(cs, ICC_MASK, 0);
124 spin_unlock_irqrestore(&cs->lock, flags);
125 return(0);
126 case CARD_TEST:
127 return(0);
128 }
129 return(0);
130}
131
132static struct pci_dev *dev_netjet __initdata = NULL;
133
134int __init
135setup_netjet_u(struct IsdnCard *card)
136{
137 int bytecnt;
138 struct IsdnCardState *cs = card->cs;
139 char tmp[64];
140#ifdef CONFIG_PCI
141#endif
142#ifdef __BIG_ENDIAN
143#error "not running on big endian machines now"
144#endif
145 strcpy(tmp, NETjet_U_revision);
146 printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp));
147 if (cs->typ != ISDN_CTYPE_NETJET_U)
148 return(0);
149 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
150
151#ifdef CONFIG_PCI
152
153 for ( ;; )
154 {
155 if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
156 PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
157 if (pci_enable_device(dev_netjet))
158 return(0);
159 pci_set_master(dev_netjet);
160 cs->irq = dev_netjet->irq;
161 if (!cs->irq) {
162 printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n");
163 return(0);
164 }
165 cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
166 if (!cs->hw.njet.base) {
167 printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n");
168 return(0);
169 }
170 } else {
171 printk(KERN_WARNING "NETspider-U: No PCI card found\n");
172 return(0);
173 }
174
175 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
176 cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF;
177 mdelay(10);
178
179 cs->hw.njet.ctrl_reg = 0xff; /* Reset On */
180 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
181 mdelay(10);
182
183 cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */
184 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
185 mdelay(10);
186
187 cs->hw.njet.auxd = 0xC0;
188 cs->hw.njet.dmactrl = 0;
189
190 byteout(cs->hw.njet.auxa, 0);
191 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
192 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
193 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
194
195 switch ( ( ( NETjet_ReadIC( cs, ICC_RBCH ) >> 5 ) & 3 ) )
196 {
197 case 3 :
198 break;
199
200 case 0 :
201 printk( KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" );
202 continue;
203
204 default :
205 printk( KERN_WARNING "NETspider-U: No PCI card found\n" );
206 return 0;
207 }
208 break;
209 }
210#else
211
212 printk(KERN_WARNING "NETspider-U: NO_PCI_BIOS\n");
213 printk(KERN_WARNING "NETspider-U: unable to config NETspider-U PCI\n");
214 return (0);
215
216#endif /* CONFIG_PCI */
217
218 bytecnt = 256;
219
220 printk(KERN_INFO
221 "NETspider-U: PCI card configured at %#lx IRQ %d\n",
222 cs->hw.njet.base, cs->irq);
223 if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) {
224 printk(KERN_WARNING
225 "HiSax: %s config port %#lx-%#lx already in use\n",
226 CardType[card->typ],
227 cs->hw.njet.base,
228 cs->hw.njet.base + bytecnt);
229 return (0);
230 }
231 setup_icc(cs);
232 cs->readisac = &NETjet_ReadIC;
233 cs->writeisac = &NETjet_WriteIC;
234 cs->readisacfifo = &NETjet_ReadICfifo;
235 cs->writeisacfifo = &NETjet_WriteICfifo;
236 cs->BC_Read_Reg = &dummyrr;
237 cs->BC_Write_Reg = &dummywr;
238 cs->BC_Send_Data = &netjet_fill_dma;
239 cs->cardmsg = &NETjet_U_card_msg;
240 cs->irq_func = &netjet_u_interrupt;
241 cs->irq_flags |= SA_SHIRQ;
242 ICCVersion(cs, "NETspider-U:");
243 return (1);
244}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 23:55:31 -0500