pci_hades.c revision 1.4.2.2
1 /* $NetBSD: pci_hades.c,v 1.4.2.2 2004/09/18 14:33:11 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Leo Weppelman. All rights reserved. 5 * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved. 6 * Copyright (c) 1994 Charles M. Hannum. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles M. Hannum. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: pci_hades.c,v 1.4.2.2 2004/09/18 14:33:11 skrll Exp $"); 36 37 #include <sys/types.h> 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 42 #include <uvm/uvm_extern.h> 43 44 #include <machine/bus.h> 45 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcireg.h> 48 49 #include <machine/cpu.h> 50 #include <machine/iomap.h> 51 #include <machine/mfp.h> 52 #include <machine/bswap.h> 53 54 #include <atari/atari/device.h> 55 #include <atari/pci/pci_vga.h> 56 #include <atari/dev/grf_etreg.h> 57 58 int 59 pci_bus_maxdevs(pc, busno) 60 pci_chipset_tag_t pc; 61 int busno; 62 { 63 return (4); 64 } 65 66 static int pci_config_offset __P((pcitag_t)); 67 68 /* 69 * Atari_init.c maps the config areas PAGE_SIZE bytes apart.... 70 */ 71 static int pci_config_offset(tag) 72 pcitag_t tag; 73 { 74 int device; 75 76 device = (tag >> 11) & 0x1f; 77 return(device * PAGE_SIZE); 78 } 79 80 pcireg_t 81 pci_conf_read(pc, tag, reg) 82 pci_chipset_tag_t pc; 83 pcitag_t tag; 84 int reg; 85 { 86 u_long data; 87 88 data = *(u_long *)(pci_conf_addr + pci_config_offset(tag) + reg); 89 return (bswap32(data)); 90 } 91 92 void 93 pci_conf_write(pc, tag, reg, data) 94 pci_chipset_tag_t pc; 95 pcitag_t tag; 96 int reg; 97 pcireg_t data; 98 { 99 *((u_long *)(pci_conf_addr + pci_config_offset(tag) + reg)) 100 = bswap32(data); 101 } 102 103 /* 104 * The interrupt stuff is rather ugly. On the Hades, all interrupt lines 105 * for a slot are wired together and connected to IO 0,1,2 or 5 (slots: 106 * (0-3) on the TT-MFP. The Pci-config code initializes the irq. number 107 * to the slot position. 108 */ 109 static pci_intr_info_t iinfo[4] = { { -1 }, { -1 }, { -1 }, { -1 } }; 110 111 static int iifun __P((int, int)); 112 113 static int 114 iifun(slot, sr) 115 int slot; 116 int sr; 117 { 118 pci_intr_info_t *iinfo_p; 119 int s; 120 121 iinfo_p = &iinfo[slot]; 122 123 /* 124 * Disable the interrupts 125 */ 126 MFP2->mf_imrb &= ~iinfo_p->imask; 127 128 if ((sr & PSL_IPL) >= (iinfo_p->ipl & PSL_IPL)) { 129 /* 130 * We're running at a too high priority now. 131 */ 132 add_sicallback((si_farg)iifun, (void*)slot, 0); 133 } 134 else { 135 s = splx(iinfo_p->ipl); 136 (void) (iinfo_p->ifunc)(iinfo_p->iarg); 137 splx(s); 138 139 /* 140 * Re-enable interrupts after handling 141 */ 142 MFP2->mf_imrb |= iinfo_p->imask; 143 } 144 return 1; 145 } 146 147 void * 148 pci_intr_establish(pc, ih, level, ih_fun, ih_arg) 149 pci_chipset_tag_t pc; 150 pci_intr_handle_t ih; 151 int level; 152 int (*ih_fun) __P((void *)); 153 void *ih_arg; 154 { 155 pci_intr_info_t *iinfo_p; 156 struct intrhand *ihand; 157 int slot; 158 159 slot = ih; 160 iinfo_p = &iinfo[slot]; 161 162 if (iinfo_p->ipl > 0) 163 panic("pci_intr_establish: interrupt was already established"); 164 165 ihand = intr_establish((slot == 3) ? 23 : 16 + slot, USER_VEC, 0, 166 (hw_ifun_t)iifun, (void *)slot); 167 if (ihand != NULL) { 168 iinfo_p->ipl = level; 169 iinfo_p->imask = (slot == 3) ? 0x80 : (0x01 << slot); 170 iinfo_p->ifunc = ih_fun; 171 iinfo_p->iarg = ih_arg; 172 iinfo_p->ihand = ihand; 173 174 /* 175 * Enable (unmask) the interrupt 176 */ 177 MFP2->mf_imrb |= iinfo_p->imask; 178 MFP2->mf_ierb |= iinfo_p->imask; 179 return(iinfo_p); 180 } 181 return NULL; 182 } 183 184 void 185 pci_intr_disestablish(pc, cookie) 186 pci_chipset_tag_t pc; 187 void *cookie; 188 { 189 pci_intr_info_t *iinfo_p = (pci_intr_info_t *)cookie; 190 191 if (iinfo->ipl < 0) 192 panic("pci_intr_disestablish: interrupt was not established"); 193 194 MFP2->mf_imrb &= ~iinfo->imask; 195 MFP2->mf_ierb &= ~iinfo->imask; 196 (void) intr_disestablish(iinfo_p->ihand); 197 iinfo_p->ipl = -1; 198 } 199 200 /* 201 * XXX: Why are we repeating this everywhere! (Leo) 202 */ 203 #define PCI_LINMEMBASE 0x0e000000 204 205 static u_char crt_tab[] = { 206 0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0xbf, 0x1f, 207 0x00, 0x4f, 0x0d, 0x0e, 0x00, 0x00, 0x00, 0x00, 208 0x9c, 0x8e, 0x8f, 0x28, 0x1f, 0x96, 0xb9, 0xa3, 209 0xff }; 210 211 static u_char seq_tab[] = { 212 0x03, 0x00, 0x03, 0x00, 0x02, 0x00, 0x00, 0x00 }; 213 214 static u_char attr_tab[] = { 215 0x0c, 0x00, 0x0f, 0x08, 0x00, 0x00, 0x00, 0x00 }; 216 217 static u_char gdc_tab[] = { 218 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0e, 0x00, 0xff }; 219 220 void 221 ati_vga_init(pc, tag, id, ba, fb) 222 pci_chipset_tag_t pc; 223 pcitag_t tag; 224 int id; 225 volatile u_char *ba; 226 u_char *fb; 227 { 228 int i, csr; 229 230 /* Turn on the card */ 231 pci_conf_write(pc, tag, PCI_MAPREG_START, PCI_LINMEMBASE); 232 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 233 csr |= (PCI_COMMAND_MEM_ENABLE|PCI_COMMAND_IO_ENABLE); 234 csr |= PCI_COMMAND_MASTER_ENABLE; 235 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr); 236 237 /* 238 * Make sure we're allowed to write all crt-registers and reload them. 239 */ 240 WCrt(ba, CRT_ID_END_VER_RETR, (RCrt(ba, CRT_ID_END_VER_RETR) & 0x7f)); 241 242 for (i = 0; i < 0x18; i++) 243 WCrt(ba, i, crt_tab[i]); 244 for (i = 0; i < 8; i++) 245 WSeq(ba, i, seq_tab[i]); 246 for (i = 0; i < 9; i++) 247 WGfx(ba, i, gdc_tab[i]); 248 for (i = 0x10; i < 0x18; i++) 249 WAttr(ba, i, attr_tab[i - 0x10]); 250 WAttr(ba, 0x20, 0); 251 } 252
Indexes created Fri Oct 03 02:09:57 GMT 2025