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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 | ||
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 | ||
18 | const char *NETjet_U_revision = "$Revision: 2.14.2.3 $"; | |
19 | ||
20 | static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off) | |
21 | { | |
22 | return(5); | |
23 | } | |
24 | ||
25 | static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value) | |
26 | { | |
27 | } | |
28 | ||
29 | static irqreturn_t | |
30 | netjet_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 | ||
84 | static void | |
85 | reset_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 | ||
102 | static int | |
103 | NETjet_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 | ||
132 | static struct pci_dev *dev_netjet __initdata = NULL; | |
133 | ||
134 | int __init | |
135 | setup_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 | } |