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1da177e4 LT |
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 | ||
1da177e4 LT |
8 | #include <linux/init.h> |
9 | #include "hisax.h" | |
10 | #include "icc.h" | |
11 | #include "isdnl1.h" | |
12 | #include <linux/pci.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <linux/ppp_defs.h> | |
15 | #include "netjet.h" | |
16 | ||
672c3fd9 | 17 | static const char *NETjet_U_revision = "$Revision: 2.14.2.3 $"; |
1da177e4 LT |
18 | |
19 | static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off) | |
20 | { | |
21 | return(5); | |
22 | } | |
23 | ||
24 | static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value) | |
25 | { | |
26 | } | |
27 | ||
28 | static irqreturn_t | |
7d12e780 | 29 | netjet_u_interrupt(int intno, void *dev_id) |
1da177e4 LT |
30 | { |
31 | struct IsdnCardState *cs = dev_id; | |
32 | u_char val, sval; | |
33 | u_long flags; | |
34 | ||
35 | spin_lock_irqsave(&cs->lock, flags); | |
36 | if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) & | |
37 | NETJET_ISACIRQ)) { | |
38 | val = NETjet_ReadIC(cs, ICC_ISTA); | |
39 | if (cs->debug & L1_DEB_ISAC) | |
40 | debugl1(cs, "tiger: i1 %x %x", sval, val); | |
41 | if (val) { | |
42 | icc_interrupt(cs, val); | |
43 | NETjet_WriteIC(cs, ICC_MASK, 0xFF); | |
44 | NETjet_WriteIC(cs, ICC_MASK, 0x0); | |
45 | } | |
46 | } | |
47 | /* start new code 13/07/00 GE */ | |
48 | /* set bits in sval to indicate which page is free */ | |
49 | if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) < | |
50 | inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ)) | |
51 | /* the 2nd write page is free */ | |
52 | sval = 0x08; | |
53 | else /* the 1st write page is free */ | |
54 | sval = 0x04; | |
55 | if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) < | |
56 | inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ)) | |
57 | /* the 2nd read page is free */ | |
58 | sval = sval | 0x02; | |
59 | else /* the 1st read page is free */ | |
60 | sval = sval | 0x01; | |
61 | if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */ | |
62 | { | |
63 | if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
64 | spin_unlock_irqrestore(&cs->lock, flags); | |
65 | return IRQ_HANDLED; | |
66 | } | |
67 | cs->hw.njet.irqstat0 = sval; | |
68 | if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) != | |
69 | (cs->hw.njet.last_is0 & NETJET_IRQM0_READ)) | |
70 | /* we have a read dma int */ | |
71 | read_tiger(cs); | |
72 | if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) != | |
73 | (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE)) | |
74 | /* we have a write dma int */ | |
75 | write_tiger(cs); | |
76 | /* end new code 13/07/00 GE */ | |
77 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
78 | } | |
79 | spin_unlock_irqrestore(&cs->lock, flags); | |
80 | return IRQ_HANDLED; | |
81 | } | |
82 | ||
83 | static void | |
84 | reset_netjet_u(struct IsdnCardState *cs) | |
85 | { | |
86 | cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ | |
87 | byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); | |
88 | mdelay(10); | |
89 | cs->hw.njet.ctrl_reg = 0x40; /* Reset Off and status read clear */ | |
90 | /* now edge triggered for TJ320 GE 13/07/00 */ | |
91 | byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); | |
92 | mdelay(10); | |
93 | cs->hw.njet.auxd = 0xC0; | |
94 | cs->hw.njet.dmactrl = 0; | |
95 | byteout(cs->hw.njet.auxa, 0); | |
96 | byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); | |
97 | byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); | |
98 | byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); | |
99 | } | |
100 | ||
101 | static int | |
102 | NETjet_U_card_msg(struct IsdnCardState *cs, int mt, void *arg) | |
103 | { | |
104 | u_long flags; | |
105 | ||
106 | switch (mt) { | |
107 | case CARD_RESET: | |
108 | spin_lock_irqsave(&cs->lock, flags); | |
109 | reset_netjet_u(cs); | |
110 | spin_unlock_irqrestore(&cs->lock, flags); | |
111 | return(0); | |
112 | case CARD_RELEASE: | |
113 | release_io_netjet(cs); | |
114 | return(0); | |
115 | case CARD_INIT: | |
116 | spin_lock_irqsave(&cs->lock, flags); | |
117 | inittiger(cs); | |
118 | reset_netjet_u(cs); | |
119 | clear_pending_icc_ints(cs); | |
120 | initicc(cs); | |
121 | /* Reenable all IRQ */ | |
122 | cs->writeisac(cs, ICC_MASK, 0); | |
123 | spin_unlock_irqrestore(&cs->lock, flags); | |
124 | return(0); | |
125 | case CARD_TEST: | |
126 | return(0); | |
127 | } | |
128 | return(0); | |
129 | } | |
130 | ||
7c60e1ca JG |
131 | static int __devinit nju_pci_probe(struct pci_dev *dev_netjet, |
132 | struct IsdnCardState *cs) | |
1da177e4 | 133 | { |
7c60e1ca | 134 | if (pci_enable_device(dev_netjet)) |
1da177e4 | 135 | return(0); |
7c60e1ca JG |
136 | pci_set_master(dev_netjet); |
137 | cs->irq = dev_netjet->irq; | |
138 | if (!cs->irq) { | |
139 | printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n"); | |
140 | return(0); | |
141 | } | |
142 | cs->hw.njet.base = pci_resource_start(dev_netjet, 0); | |
143 | if (!cs->hw.njet.base) { | |
144 | printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n"); | |
145 | return(0); | |
146 | } | |
1da177e4 | 147 | |
7c60e1ca JG |
148 | return (1); |
149 | } | |
1da177e4 | 150 | |
7c60e1ca JG |
151 | static int __devinit nju_cs_init(struct IsdnCard *card, |
152 | struct IsdnCardState *cs) | |
153 | { | |
154 | cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA; | |
155 | cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF; | |
156 | mdelay(10); | |
1da177e4 | 157 | |
7c60e1ca JG |
158 | cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ |
159 | byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); | |
160 | mdelay(10); | |
1da177e4 | 161 | |
7c60e1ca JG |
162 | cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */ |
163 | byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); | |
164 | mdelay(10); | |
1da177e4 | 165 | |
7c60e1ca JG |
166 | cs->hw.njet.auxd = 0xC0; |
167 | cs->hw.njet.dmactrl = 0; | |
1da177e4 | 168 | |
7c60e1ca JG |
169 | byteout(cs->hw.njet.auxa, 0); |
170 | byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); | |
171 | byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); | |
172 | byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); | |
1da177e4 | 173 | |
7c60e1ca JG |
174 | switch ( ( ( NETjet_ReadIC( cs, ICC_RBCH ) >> 5 ) & 3 ) ) |
175 | { | |
176 | case 3 : | |
177 | return 1; /* end loop */ | |
1da177e4 | 178 | |
7c60e1ca JG |
179 | case 0 : |
180 | printk( KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" ); | |
181 | return -1; /* continue looping */ | |
1da177e4 | 182 | |
7c60e1ca JG |
183 | default : |
184 | printk( KERN_WARNING "NETspider-U: No PCI card found\n" ); | |
185 | return 0; /* end loop & function */ | |
1da177e4 | 186 | } |
7c60e1ca JG |
187 | return 1; /* end loop */ |
188 | } | |
1da177e4 | 189 | |
7c60e1ca JG |
190 | static int __devinit nju_cs_init_rest(struct IsdnCard *card, |
191 | struct IsdnCardState *cs) | |
192 | { | |
193 | const int bytecnt = 256; | |
1da177e4 LT |
194 | |
195 | printk(KERN_INFO | |
196 | "NETspider-U: PCI card configured at %#lx IRQ %d\n", | |
197 | cs->hw.njet.base, cs->irq); | |
198 | if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) { | |
199 | printk(KERN_WARNING | |
8349304d JG |
200 | "HiSax: NETspider-U config port %#lx-%#lx " |
201 | "already in use\n", | |
1da177e4 LT |
202 | cs->hw.njet.base, |
203 | cs->hw.njet.base + bytecnt); | |
204 | return (0); | |
205 | } | |
206 | setup_icc(cs); | |
207 | cs->readisac = &NETjet_ReadIC; | |
208 | cs->writeisac = &NETjet_WriteIC; | |
209 | cs->readisacfifo = &NETjet_ReadICfifo; | |
210 | cs->writeisacfifo = &NETjet_WriteICfifo; | |
211 | cs->BC_Read_Reg = &dummyrr; | |
212 | cs->BC_Write_Reg = &dummywr; | |
213 | cs->BC_Send_Data = &netjet_fill_dma; | |
214 | cs->cardmsg = &NETjet_U_card_msg; | |
215 | cs->irq_func = &netjet_u_interrupt; | |
9ba02bec | 216 | cs->irq_flags |= IRQF_SHARED; |
1da177e4 | 217 | ICCVersion(cs, "NETspider-U:"); |
7c60e1ca | 218 | |
1da177e4 LT |
219 | return (1); |
220 | } | |
7c60e1ca JG |
221 | |
222 | static struct pci_dev *dev_netjet __devinitdata = NULL; | |
223 | ||
224 | int __devinit | |
225 | setup_netjet_u(struct IsdnCard *card) | |
226 | { | |
227 | int ret; | |
228 | struct IsdnCardState *cs = card->cs; | |
229 | char tmp[64]; | |
230 | ||
231 | #ifdef __BIG_ENDIAN | |
232 | #error "not running on big endian machines now" | |
233 | #endif | |
234 | ||
235 | strcpy(tmp, NETjet_U_revision); | |
236 | printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp)); | |
237 | if (cs->typ != ISDN_CTYPE_NETJET_U) | |
238 | return(0); | |
239 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
240 | ||
241 | for ( ;; ) | |
242 | { | |
41a68a74 | 243 | if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET, |
7c60e1ca JG |
244 | PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) { |
245 | ret = nju_pci_probe(dev_netjet, cs); | |
246 | if (!ret) | |
247 | return(0); | |
248 | } else { | |
249 | printk(KERN_WARNING "NETspider-U: No PCI card found\n"); | |
250 | return(0); | |
251 | } | |
252 | ||
253 | ret = nju_cs_init(card, cs); | |
254 | if (!ret) | |
255 | return (0); | |
256 | if (ret > 0) | |
257 | break; | |
258 | /* ret < 0 == continue looping */ | |
259 | } | |
260 | ||
261 | return nju_cs_init_rest(card, cs); | |
262 | } |