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475be4d8 | 1 | /* $Id: nj_u.c,v 2.14.2.3 2004/01/13 14:31:26 keil Exp $ |
1da177e4 LT |
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 | { | |
475be4d8 | 21 | return (5); |
1da177e4 LT |
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)) & | |
475be4d8 | 37 | NETJET_ISACIRQ)) { |
1da177e4 LT |
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) < | |
475be4d8 | 50 | inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ)) |
1da177e4 LT |
51 | /* the 2nd write page is free */ |
52 | sval = 0x08; | |
53 | else /* the 1st write page is free */ | |
475be4d8 | 54 | sval = 0x04; |
1da177e4 | 55 | if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) < |
475be4d8 | 56 | inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ)) |
1da177e4 LT |
57 | /* the 2nd read page is free */ |
58 | sval = sval | 0x02; | |
59 | else /* the 1st read page is free */ | |
475be4d8 | 60 | sval = sval | 0x01; |
1da177e4 LT |
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; | |
475be4d8 JP |
68 | if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) != |
69 | (cs->hw.njet.last_is0 & NETJET_IRQM0_READ)) | |
1da177e4 LT |
70 | /* we have a read dma int */ |
71 | read_tiger(cs); | |
72 | if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) != | |
475be4d8 | 73 | (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE)) |
1da177e4 LT |
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) { | |
475be4d8 JP |
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); | |
1da177e4 | 127 | } |
475be4d8 | 128 | return (0); |
1da177e4 LT |
129 | } |
130 | ||
ed5a84cd | 131 | static int nju_pci_probe(struct pci_dev *dev_netjet, struct IsdnCardState *cs) |
1da177e4 | 132 | { |
7c60e1ca | 133 | if (pci_enable_device(dev_netjet)) |
475be4d8 | 134 | return (0); |
7c60e1ca JG |
135 | pci_set_master(dev_netjet); |
136 | cs->irq = dev_netjet->irq; | |
137 | if (!cs->irq) { | |
138 | printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n"); | |
475be4d8 | 139 | return (0); |
7c60e1ca JG |
140 | } |
141 | cs->hw.njet.base = pci_resource_start(dev_netjet, 0); | |
142 | if (!cs->hw.njet.base) { | |
143 | printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n"); | |
475be4d8 | 144 | return (0); |
7c60e1ca | 145 | } |
1da177e4 | 146 | |
7c60e1ca JG |
147 | return (1); |
148 | } | |
1da177e4 | 149 | |
ed5a84cd | 150 | static int nju_cs_init(struct IsdnCard *card, struct IsdnCardState *cs) |
7c60e1ca JG |
151 | { |
152 | cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA; | |
153 | cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF; | |
154 | mdelay(10); | |
1da177e4 | 155 | |
7c60e1ca JG |
156 | cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ |
157 | byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); | |
158 | mdelay(10); | |
1da177e4 | 159 | |
7c60e1ca JG |
160 | cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */ |
161 | byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); | |
162 | mdelay(10); | |
1da177e4 | 163 | |
7c60e1ca JG |
164 | cs->hw.njet.auxd = 0xC0; |
165 | cs->hw.njet.dmactrl = 0; | |
1da177e4 | 166 | |
7c60e1ca JG |
167 | byteout(cs->hw.njet.auxa, 0); |
168 | byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); | |
169 | byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); | |
170 | byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); | |
1da177e4 | 171 | |
475be4d8 | 172 | switch (((NETjet_ReadIC(cs, ICC_RBCH) >> 5) & 3)) |
7c60e1ca | 173 | { |
475be4d8 JP |
174 | case 3: |
175 | return 1; /* end loop */ | |
1da177e4 | 176 | |
475be4d8 JP |
177 | case 0: |
178 | printk(KERN_WARNING "NETspider-U: NETjet-S PCI card found\n"); | |
179 | return -1; /* continue looping */ | |
1da177e4 | 180 | |
475be4d8 JP |
181 | default: |
182 | printk(KERN_WARNING "NETspider-U: No PCI card found\n"); | |
183 | return 0; /* end loop & function */ | |
1da177e4 | 184 | } |
7c60e1ca JG |
185 | return 1; /* end loop */ |
186 | } | |
1da177e4 | 187 | |
ed5a84cd | 188 | static int nju_cs_init_rest(struct IsdnCard *card, struct IsdnCardState *cs) |
7c60e1ca JG |
189 | { |
190 | const int bytecnt = 256; | |
1da177e4 LT |
191 | |
192 | printk(KERN_INFO | |
475be4d8 JP |
193 | "NETspider-U: PCI card configured at %#lx IRQ %d\n", |
194 | cs->hw.njet.base, cs->irq); | |
1da177e4 LT |
195 | if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) { |
196 | printk(KERN_WARNING | |
8349304d JG |
197 | "HiSax: NETspider-U config port %#lx-%#lx " |
198 | "already in use\n", | |
1da177e4 LT |
199 | cs->hw.njet.base, |
200 | cs->hw.njet.base + bytecnt); | |
201 | return (0); | |
202 | } | |
203 | setup_icc(cs); | |
204 | cs->readisac = &NETjet_ReadIC; | |
205 | cs->writeisac = &NETjet_WriteIC; | |
206 | cs->readisacfifo = &NETjet_ReadICfifo; | |
207 | cs->writeisacfifo = &NETjet_WriteICfifo; | |
208 | cs->BC_Read_Reg = &dummyrr; | |
209 | cs->BC_Write_Reg = &dummywr; | |
210 | cs->BC_Send_Data = &netjet_fill_dma; | |
211 | cs->cardmsg = &NETjet_U_card_msg; | |
212 | cs->irq_func = &netjet_u_interrupt; | |
9ba02bec | 213 | cs->irq_flags |= IRQF_SHARED; |
1da177e4 | 214 | ICCVersion(cs, "NETspider-U:"); |
7c60e1ca | 215 | |
1da177e4 LT |
216 | return (1); |
217 | } | |
7c60e1ca | 218 | |
ed5a84cd | 219 | static struct pci_dev *dev_netjet = NULL; |
7c60e1ca | 220 | |
ed5a84cd | 221 | int setup_netjet_u(struct IsdnCard *card) |
7c60e1ca JG |
222 | { |
223 | int ret; | |
224 | struct IsdnCardState *cs = card->cs; | |
225 | char tmp[64]; | |
226 | ||
227 | #ifdef __BIG_ENDIAN | |
228 | #error "not running on big endian machines now" | |
229 | #endif | |
230 | ||
231 | strcpy(tmp, NETjet_U_revision); | |
232 | printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp)); | |
233 | if (cs->typ != ISDN_CTYPE_NETJET_U) | |
475be4d8 | 234 | return (0); |
7c60e1ca JG |
235 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); |
236 | ||
475be4d8 | 237 | for (;;) |
7c60e1ca | 238 | { |
41a68a74 | 239 | if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET, |
475be4d8 | 240 | PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) { |
7c60e1ca JG |
241 | ret = nju_pci_probe(dev_netjet, cs); |
242 | if (!ret) | |
475be4d8 | 243 | return (0); |
7c60e1ca JG |
244 | } else { |
245 | printk(KERN_WARNING "NETspider-U: No PCI card found\n"); | |
475be4d8 | 246 | return (0); |
7c60e1ca JG |
247 | } |
248 | ||
249 | ret = nju_cs_init(card, cs); | |
250 | if (!ret) | |
251 | return (0); | |
252 | if (ret > 0) | |
253 | break; | |
254 | /* ret < 0 == continue looping */ | |
255 | } | |
256 | ||
257 | return nju_cs_init_rest(card, cs); | |
258 | } |