操作系统开发

开发平台：

WINDOWS

COMPLETE.T：源码内容

15627 case 0: /* Clear from cursor to end of line */
15628 count = scr_width - cons->c_column;
15629 dst = cons->c_cur;
15630 break;
15631 case 1: /* Clear from beginning of line to cursor */
15632 count = cons->c_column;
15633 dst = cons->c_cur - cons->c_column;
15634 break;
15635 case 2: /* Clear entire line */
15636 count = scr_width;
15637 dst = cons->c_cur - cons->c_column;
15638 break;
15639 default: /* Do nothing */
15640 count = 0;
15641 dst = cons->c_cur;
15642 }
15643 blank_color = cons->c_blank;
15644 mem_vid_copy(BLANK_MEM, dst, count);
15645 break;
15646
15647 case 'L': /* ESC [nL inserts n lines at cursor */
15648 n = value;
15649 if (n < 1) n = 1;
15650 if (n > (scr_lines - cons->c_row))
15651 n = scr_lines - cons->c_row;
15652
15653 src = cons->c_org + cons->c_row * scr_width;
15654 dst = src + n * scr_width;
15655 count = (scr_lines - cons->c_row - n) * scr_width;
15656 vid_vid_copy(src, dst, count);
15657 blank_color = cons->c_blank;
15658 mem_vid_copy(BLANK_MEM, src, n * scr_width);
15659 break;
.Ep 198 src/kernel/console.c
15660
15661 case 'M': /* ESC [nM deletes n lines at cursor */
15662 n = value;
15663 if (n < 1) n = 1;
15664 if (n > (scr_lines - cons->c_row))
15665 n = scr_lines - cons->c_row;
15666
15667 dst = cons->c_org + cons->c_row * scr_width;
15668 src = dst + n * scr_width;
15669 count = (scr_lines - cons->c_row - n) * scr_width;
15670 vid_vid_copy(src, dst, count);
15671 blank_color = cons->c_blank;
15672 mem_vid_copy(BLANK_MEM, dst + count, n * scr_width);
15673 break;
15674
15675 case '@': /* ESC [n@ inserts n chars at cursor */
15676 n = value;
15677 if (n < 1) n = 1;
15678 if (n > (scr_width - cons->c_column))
15679 n = scr_width - cons->c_column;
15680
15681 src = cons->c_cur;
15682 dst = src + n;
15683 count = scr_width - cons->c_column - n;
15684 vid_vid_copy(src, dst, count);
15685 blank_color = cons->c_blank;
15686 mem_vid_copy(BLANK_MEM, src, n);
15687 break;
15688
15689 case 'P': /* ESC [nP deletes n chars at cursor */
15690 n = value;
15691 if (n < 1) n = 1;
15692 if (n > (scr_width - cons->c_column))
15693 n = scr_width - cons->c_column;
15694
15695 dst = cons->c_cur;
15696 src = dst + n;
15697 count = scr_width - cons->c_column - n;
15698 vid_vid_copy(src, dst, count);
15699 blank_color = cons->c_blank;
15700 mem_vid_copy(BLANK_MEM, dst + count, n);
15701 break;
15702
15703 case 'm': /* ESC [nm enables rendition n */
15704 switch (value) {
15705 case 1: /* BOLD */
15706 if (color) {
15707 /* Can't do bold, so use yellow */
15708 cons->c_attr = (cons->c_attr & 0xf0ff) | 0x0E00;
15709 } else {
15710 /* Set intensity bit */
15711 cons->c_attr |= 0x0800;
15712 }
15713 break;
15714
15715 case 4: /* UNDERLINE */
15716 if (color) {
15717 /* Use light green */
15718 cons->c_attr = (cons->c_attr & 0xf0ff) | 0x0A00;
15719 } else {
.Op 199 src/kernel/console.c
15720 cons->c_attr = (cons->c_attr & 0x8900);
15721 }
15722 break;
15723
15724 case 5: /* BLINKING */
15725 if (color) {
15726 /* Use magenta */
15727 cons->c_attr = (cons->c_attr & 0xf0ff) | 0x0500;
15728 } else {
15729 /* Set the blink bit */
15730 cons->c_attr |= 0x8000;
15731 }
15732 break;
15733
15734 case 7: /* REVERSE */
15735 if (color) {
15736 /* Swap fg and bg colors */
15737 cons->c_attr =
15738 ((cons->c_attr & 0xf000) >> 4) |
15739 ((cons->c_attr & 0x0f00) << 4);
15740 } else
15741 if ((cons->c_attr & 0x7000) == 0) {
15742 cons->c_attr = (cons->c_attr & 0x8800) | 0x7000;
15743 } else {
15744 cons->c_attr = (cons->c_attr & 0x8800) | 0x0700;
15745 }
15746 break;
15747
15748 default: /* COLOR */
15749 if (30 <= value && value <= 37) {
15750 cons->c_attr =
15751 (cons->c_attr & 0xf0ff) |
15752 (ansi_colors[(value - 30)] << 8);
15753 cons->c_blank =
15754 (cons->c_blank & 0xf0ff) |
15755 (ansi_colors[(value - 30)] << 8);
15756 } else
15757 if (40 <= value && value <= 47) {
15758 cons->c_attr =
15759 (cons->c_attr & 0x0fff) |
15760 (ansi_colors[(value - 40)] << 12);
15761 cons->c_blank =
15762 (cons->c_blank & 0x0fff) |
15763 (ansi_colors[(value - 40)] << 12);
15764 } else {
15765 cons->c_attr = cons->c_blank;
15766 }
15767 break;
15768 }
15769 break;
15770 }
15771 }
15772 cons->c_esc_state = 0;
15773 }
15776 /*===========================================================================*
15777 * set_6845 *
15778 *===========================================================================*/
15779 PRIVATE void set_6845(reg, val)
.Ep 200 src/kernel/console.c
15780 int reg; /* which register pair to set */
15781 unsigned val; /* 16-bit value to set it to */
15782 {
15783 /* Set a register pair inside the 6845.
15784 * Registers 12-13 tell the 6845 where in video ram to start
15785 * Registers 14-15 tell the 6845 where to put the cursor
15786 */
15787 lock(); /* try to stop h/w loading in-between value */
15788 out_byte(vid_port + INDEX, reg); /* set the index register */
15789 out_byte(vid_port + DATA, (val>>8) & BYTE); /* output high byte */
15790 out_byte(vid_port + INDEX, reg + 1); /* again */
15791 out_byte(vid_port + DATA, val&BYTE); /* output low byte */
15792 unlock();
15793 }
15796 /*===========================================================================*
15797 * beep *
15798 *===========================================================================*/
15799 PRIVATE void beep()
15800 {
15801 /* Making a beeping sound on the speaker (output for CRTL-G).
15802 * This routine works by turning on the bits 0 and 1 in port B of the 8255
15803 * chip that drive the speaker.
15804 */
15805
15806 message mess;
15807
15808 if (beeping) return;
15809 out_byte(TIMER_MODE, 0xB6); /* set up timer channel 2 (square wave) */
15810 out_byte(TIMER2, BEEP_FREQ & BYTE); /* load low-order bits of frequency */
15811 out_byte(TIMER2, (BEEP_FREQ >> 8) & BYTE); /* now high-order bits */
15812 lock(); /* guard PORT_B from keyboard intr handler */
15813 out_byte(PORT_B, in_byte(PORT_B) | 3); /* turn on beep bits */
15814 unlock();
15815 beeping = TRUE;
15816
15817 mess.m_type = SET_ALARM;
15818 mess.CLOCK_PROC_NR = TTY;
15819 mess.DELTA_TICKS = B_TIME;
15820 mess.FUNC_TO_CALL = (sighandler_t) stop_beep;
15821 sendrec(CLOCK, &mess);
15822 }
15825 /*===========================================================================*
15826 * stop_beep *
15827 *===========================================================================*/
15828 PRIVATE void stop_beep()
15829 {
15830 /* Turn off the beeper by turning off bits 0 and 1 in PORT_B. */
15831
15832 lock(); /* guard PORT_B from keyboard intr handler */
15833 out_byte(PORT_B, in_byte(PORT_B) & ~3);
15834 beeping = FALSE;
15835 unlock();
15836 }
15839 /*===========================================================================*
.Op 201 src/kernel/console.c
15840 * scr_init *
15841 *===========================================================================*/
15842 PUBLIC void scr_init(tp)
15843 tty_t *tp;
15844 {
15845 /* Initialize the screen driver. */
15846 console_t *cons;
15847 phys_bytes vid_base;
15848 u16_t bios_crtbase;
15849 int line;
15850 unsigned page_size;
15851
15852 /* Associate console and TTY. */
15853 line = tp - &tty_table[0];
15854 if (line >= nr_cons) return;
15855 cons = &cons_table[line];
15856 cons->c_tty = tp;
15857 tp->tty_priv = cons;
15858
15859 /* Initialize the keyboard driver. */
15860 kb_init(tp);
15861
15862 /* Output functions. */
15863 tp->tty_devwrite = cons_write;
15864 tp->tty_echo = cons_echo;
15865
15866 /* Get the BIOS parameters that tells the VDU I/O base register. */
15867 phys_copy(0x463L, vir2phys(&bios_crtbase), 2L);
15868
15869 vid_port = bios_crtbase;
15870
15871 if (color) {
15872 vid_base = COLOR_BASE;
15873 vid_size = COLOR_SIZE;
15874 } else {
15875 vid_base = MONO_BASE;
15876 vid_size = MONO_SIZE;
15877 }
15878 if (ega) vid_size = EGA_SIZE;
15879 wrap = !ega;
15880
15881 vid_seg = protected_mode ? VIDEO_SELECTOR : physb_to_hclick(vid_base);
15882 init_dataseg(&gdt[VIDEO_INDEX], vid_base, (phys_bytes) vid_size,
15883 TASK_PRIVILEGE);
15884 vid_size >>= 1; /* word count */
15885 vid_mask = vid_size - 1;
15886
15887 /* There can be as many consoles as video memory allows. */
15888 nr_cons = vid_size / scr_size;
15889 if (nr_cons > NR_CONS) nr_cons = NR_CONS;
15890 if (nr_cons > 1) wrap = 0;
15891 page_size = vid_size / nr_cons;
15892 cons->c_start = line * page_size;
15893 cons->c_limit = cons->c_start + page_size;
15894 cons->c_org = cons->c_start;
15895 cons->c_attr = cons->c_blank = BLANK_COLOR;
15896
15897 /* Clear the screen. */
15898 blank_color = BLANK_COLOR;
15899 mem_vid_copy(BLANK_MEM, cons->c_start, scr_size);
.Ep 202 src/kernel/console.c
15900 select_console(0);
15901 }
15904 /*===========================================================================*
15905 * putk *
15906 *===========================================================================*/
15907 PUBLIC void putk(c)
15908 int c; /* character to print */
15909 {
15910 /* This procedure is used by the version of printf() that is linked with
15911 * the kernel itself. The one in the library sends a message to FS, which is
15912 * not what is needed for printing within the kernel. This version just queues
15913 * the character and starts the output.
15914 */
15915
15916 if (c != 0) {
15917 if (c == 'n') putk('r');
15918 out_char(&cons_table[0], (int) c);
15919 } else {
15920 flush(&cons_table[0]);
15921 }
15922 }
15925 /*===========================================================================*
15926 * toggle_scroll *
15927 *===========================================================================*/
15928 PUBLIC void toggle_scroll()
15929 {
15930 /* Toggle between hardware and software scroll. */
15931
15932 cons_org0();
15933 softscroll = !softscroll;
15934 printf("%sware scrolling enabled.n", softscroll ? "Soft" : "Hard");
15935 }
15938 /*===========================================================================*
15939 * cons_stop *
15940 *===========================================================================*/
15941 PUBLIC void cons_stop()
15942 {
15943 /* Prepare for halt or reboot. */
15944 cons_org0();
15945 softscroll = 1;
15946 select_console(0);
15947 cons_table[0].c_attr = cons_table[0].c_blank = BLANK_COLOR;
15948 }
15951 /*===========================================================================*
15952 * cons_org0 *
15953 *===========================================================================*/
15954 PRIVATE void cons_org0()
15955 {
15956 /* Scroll video memory back to put the origin at 0. */
15957 int cons_line;
15958 console_t *cons;
15959 unsigned n;
.Op 203 src/kernel/console.c
15960
15961 for (cons_line = 0; cons_line < nr_cons; cons_line++) {
15962 cons = &cons_table[cons_line];
15963 while (cons->c_org > cons->c_start) {
15964 n = vid_size - scr_size; /* amount of unused memory */
15965 if (n > cons->c_org - cons->c_start)
15966 n = cons->c_org - cons->c_start;
15967 vid_vid_copy(cons->c_org, cons->c_org - n, scr_size);
15968 cons->c_org -= n;
15969 }
15970 flush(cons);
15971 }
15972 select_console(current);
15973 }
15976 /*===========================================================================*
15977 * select_console *
15978 *===========================================================================*/
15979 PUBLIC void select_console(int cons_line)
15980 {
15981 /* Set the current console to console number 'cons_line'. */
15982
15983 if (cons_line < 0 || cons_line >= nr_cons) return;
15984 current = cons_line;
15985 curcons = &cons_table[cons_line];
15986 set_6845(VID_ORG, curcons->c_org);
15987 set_6845(CURSOR, curcons->c_cur);
15988 }
15991 /*===========================================================================*
15992 * con_loadfont *
15993 *===========================================================================*/
15994
15995 PUBLIC int con_loadfont(user_phys)
15996 phys_bytes user_phys;
15997 {
15998 /* Load a font into the EGA or VGA adapter. */
15999 static struct sequence seq1[7] = {
16000 { GA_SEQUENCER_INDEX, 0x00, 0x01 },
16001 { GA_SEQUENCER_INDEX, 0x02, 0x04 },
16002 { GA_SEQUENCER_INDEX, 0x04, 0x07 },
16003 { GA_SEQUENCER_INDEX, 0x00, 0x03 },
16004 { GA_GRAPHICS_INDEX, 0x04, 0x02 },
16005 { GA_GRAPHICS_INDEX, 0x05, 0x00 },
16006 { GA_GRAPHICS_INDEX, 0x06, 0x00 },
16007 };
16008 static struct sequence seq2[7] = {
16009 { GA_SEQUENCER_INDEX, 0x00, 0x01 },
16010 { GA_SEQUENCER_INDEX, 0x02, 0x03 },
16011 { GA_SEQUENCER_INDEX, 0x04, 0x03 },
16012 { GA_SEQUENCER_INDEX, 0x00, 0x03 },
16013 { GA_GRAPHICS_INDEX, 0x04, 0x00 },
16014 { GA_GRAPHICS_INDEX, 0x05, 0x10 },
16015 { GA_GRAPHICS_INDEX, 0x06, 0 },
16016 };
16017
16018 seq2[6].value= color ? 0x0E : 0x0A;
16019
.Ep 204 src/kernel/console.c
16020 if (!ega) return(ENOTTY);
16021
16022 lock();
16023 ga_program(seq1); /* bring font memory into view */
16024
16025 phys_copy(user_phys, (phys_bytes)GA_VIDEO_ADDRESS, (phys_bytes)GA_FONT_SIZE);
16026
16027 ga_program(seq2); /* restore */
16028 unlock();
16029
16030 return(OK);
16031 }
16034 /*===========================================================================*
16035 * ga_program *
16036 *===========================================================================*/
16037
16038 PRIVATE void ga_program(seq)
16039 struct sequence *seq;
16040 {
16041 int len= 7;
16042 do {
16043 out_byte(seq->index, seq->port);
16044 out_byte(seq->index+1, seq->value);
16045 seq++;
16046 } while (--len > 0);
16047 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/dmp.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
16100 /* This file contains some dumping routines for debugging. */
16101
16102 #include "kernel.h"
16103 #include <minix/com.h>
16104 #include "proc.h"
16105
16106 char *vargv;
16107
16108 FORWARD _PROTOTYPE(char *proc_name, (int proc_nr));
16109
16110 /*===========================================================================*
16111 * p_dmp *
16112 *===========================================================================*/
16113 #if (CHIP == INTEL)
16114 PUBLIC void p_dmp()
16115 {
16116 /* Proc table dump */
16117
16118 register struct proc *rp;
16119 static struct proc *oldrp = BEG_PROC_ADDR;
16120 int n = 0;
16121 phys_clicks text, data, size;
16122 int proc_nr;
16123
16124 printf("n--pid --pc- ---sp- flag -user --sys-- -text- -data- -size- -recv- commandn");
.Op 205 src/kernel/dmp.c
16125
16126 for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
16127 proc_nr = proc_number(rp);
16128 if (rp->p_flags & P_SLOT_FREE) continue;
16129 if (++n > 20) break;
16130 text = rp->p_map[T].mem_phys;
16131 data = rp->p_map[D].mem_phys;
16132 size = rp->p_map[T].mem_len
16133 + ((rp->p_map[S].mem_phys + rp->p_map[S].mem_len) - data);
16134 printf("%5d %5lx %6lx %2x %7U %7U %5uK %5uK %5uK ",
16135 proc_nr < 0 ? proc_nr : rp->p_pid,
16136 (unsigned long) rp->p_reg.pc,
16137 (unsigned long) rp->p_reg.sp,
16138 rp->p_flags,
16139 rp->user_time, rp->sys_time,
16140 click_to_round_k(text), click_to_round_k(data),
16141 click_to_round_k(size));
16142 if (rp->p_flags & RECEIVING) {
16143 printf("%-7.7s", proc_name(rp->p_getfrom));
16144 } else
16145 if (rp->p_flags & SENDING) {
16146 printf("S:%-5.5s", proc_name(rp->p_sendto));
16147 } else
16148 if (rp->p_flags == 0) {
16149 printf(" ");
16150 }
16151 printf("%sn", rp->p_name);
16152 }
16153 if (rp == END_PROC_ADDR) rp = BEG_PROC_ADDR; else printf("--more--r");
16154 oldrp = rp;
16155 }
16156 #endif /* (CHIP == INTEL) */
16157
16158 /*===========================================================================*
16159 * map_dmp *
16160 *===========================================================================*/
16161 #if (SHADOWING == 0)
16162 PUBLIC void map_dmp()
16163 {
16164 register struct proc *rp;
16165 static struct proc *oldrp = cproc_addr(HARDWARE);
16166 int n = 0;
16167 phys_clicks size;
16168
16169 printf("nPROC NAME- -----TEXT----- -----DATA----- ----STACK----- -SIZE-n");
16170 for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
16171 if (rp->p_flags & P_SLOT_FREE) continue;
16172 if (++n > 20) break;
16173 size = rp->p_map[T].mem_len
16174 + ((rp->p_map[S].mem_phys + rp->p_map[S].mem_len)
16175 - rp->p_map[D].mem_phys);
16176 printf("%3d %-6.6s %4x %4x %4x %4x %4x %4x %4x %4x %4x %5uKn",
16177 proc_number(rp),
16178 rp->p_name,
16179 rp->p_map[T].mem_vir, rp->p_map[T].mem_phys, rp->p_map[T].mem_len,
16180 rp->p_map[D].mem_vir, rp->p_map[D].mem_phys, rp->p_map[D].mem_len,
16181 rp->p_map[S].mem_vir, rp->p_map[S].mem_phys, rp->p_map[S].mem_len,
16182 click_to_round_k(size));
16183 }
16184 if (rp == END_PROC_ADDR) rp = cproc_addr(HARDWARE); else printf("--more--r");
.Ep 206 src/kernel/dmp.c
16185 oldrp = rp;
16186 }
16188 #else
16189
16190 PUBLIC void map_dmp()
16191 {
16192 register struct proc *rp;
16193 static struct proc *oldrp = cproc_addr(HARDWARE);
16194 int n = 0;
16195 vir_clicks base, limit;
16196
16197 printf("nPROC NAME- --TEXT--- --DATA--- --STACK-- SHADOW FLIP P BASE SIZEn");
16198 for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
16199 if (rp->p_flags & P_SLOT_FREE) continue;
16200 if (++n > 20) break;
16201 base = rp->p_map[T].mem_phys;
16202 limit = rp->p_map[S].mem_phys + rp->p_map[S].mem_len;
16203 printf("%3d %-6.6s %4x %4x %4x %4x %4x %4x %4x %4d %d %4uKn",
16204 proc_number(rp),
16205 rp->p_name,
16206 rp->p_map[T].mem_phys, rp->p_map[T].mem_len,
16207 rp->p_map[D].mem_phys, rp->p_map[D].mem_len,
16208 rp->p_map[S].mem_phys, rp->p_map[S].mem_len,
16209 rp->p_shadow, rp->p_nflips, rp->p_physio,
16210 click_to_round_k(base), click_to_round_k(limit));
16211 }
16212 if (rp == END_PROC_ADDR) rp = cproc_addr(HARDWARE); else printf("--more--r");
16213 oldrp = rp;
16214 }
16216 #endif
16217
16218 #if (CHIP == M68000)
16219 FORWARD _PROTOTYPE(void mem_dmp, (char *adr, int len));
16220
16221 /*===========================================================================*
16222 * p_dmp *
16223 *===========================================================================*/
16224 PUBLIC void p_dmp()
16225 {
16226 /* Proc table dump */
16227
16228 register struct proc *rp;
16229 static struct proc *oldrp = BEG_PROC_ADDR;
16230 int n = 0;
16231 vir_clicks base, limit;
16232
16233 printf(
16234 "nproc pid pc sp splow flag user sys recv commandn");
16235
16236 for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
16237 if (rp->p_flags & P_SLOT_FREE) continue;
16238 if (++n > 20) break;
16239 base = rp->p_map[T].mem_phys;
16240 limit = rp->p_map[S].mem_phys + rp->p_map[S].mem_len;
16241 printf("%4u %4u %6lx %6lx %6lx %4x %5U %6U ",
16242 proc_number(rp),
16243 rp->p_pid,
16244 (unsigned long) rp->p_reg.pc,
.Op 207 src/kernel/dmp.c
16245 (unsigned long) rp->p_reg.sp,
16246 (unsigned long) rp->p_splow,
16247 rp->p_flags,
16248 rp->user_time, rp->sys_time);
16249 if (rp->p_flags & RECEIVING) {
16250 printf("%-7.7s", proc_name(rp->p_getfrom));
16251 } else
16252 if (rp->p_flags & SENDING) {
16253 printf("S:%-5.5s", proc_name(rp->p_sendto));
16254 } else
16255 if (rp->p_flags == 0) {
16256 printf(" ");
16257 }
16258 printf("%sn", rp->p_name);
16259 }
16260 if (rp == END_PROC_ADDR) rp = BEG_PROC_ADDR; else printf("--more--r");
16261 oldrp = rp;
16262 }
16265 /*===========================================================================*
16266 * reg_dmp *
16267 *===========================================================================*/
16268 PUBLIC void reg_dmp(rp)
16269 struct proc *rp;
16270 {
16271 register int i;
16272 static char *regs[NR_REGS] = {
16273 "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
16274 "a0", "a1", "a2", "a3", "a4", "a5", "a6"
16275 };
16276 reg_t *regptr = (reg_t *) & rp->p_reg;
16277
16278 printf("reg = %08lx, ", rp);
16279 printf("ksp = %08lxn", (long) &rp + sizeof(rp));
16280 printf(" pc = %08lx, ", rp->p_reg.pc);
16281 printf(" sr = %04x, ", rp->p_reg.psw);
16282 printf("trp = %2xn", rp->p_trap);
16283 for (i = 0; i < NR_REGS; i++)
16284 printf("%3s = %08lx%s",regs[i], *regptr++, (i&3) == 3 ? "n" : ", ");
16285 printf(" a7 = %08lxn", rp->p_reg.sp);
16286 #if (SHADOWING == 1)
16287 mem_dmp((char *) (((long) rp->p_reg.pc & ~31L) - 96), 128);
16288 mem_dmp((char *) (((long) rp->p_reg.sp & ~31L) - 32), 256);
16289 #else
16290 mem_dmp((char *) (((long) rp->p_reg.pc & ~31L) - 96 +
16291 ((long)rp->p_map[T].mem_phys<<CLICK_SHIFT)), 128);
16292 mem_dmp((char *) (((long) rp->p_reg.sp & ~31L) - 32 +
16293 ((long)rp->p_map[S].mem_phys<<CLICK_SHIFT)), 256);
16294 #endif
16295 }
16298 /*===========================================================================*
16299 * mem_dmp *
16300 *===========================================================================*/
16301 PRIVATE void mem_dmp(adr, len)
16302 char *adr;
16303 int len;
16304 {
.Ep 208 src/kernel/dmp.c
16305 register i;
16306 register long *p;
16307
16308 for (i = 0, p = (long *) adr; i < len; i += 4) {
16309 #if (CHIP == M68000)
16310 if ((i & 31) == 0) printf("n%lX:", p);
16311 printf(" %8lX", *p++);
16312 #else
16313 if ((i & 31) == 0) printf("n%X:", p);
16314 printf(" %8X", *p++);
16315 #endif /* (CHIP == M68000) */
16316 }
16317 printf("n");
16318 }
16320 #endif /* (CHIP == M68000) */
16321
16322
16323 /*===========================================================================*
16324 * proc_name *
16325 *===========================================================================*/
16326 PRIVATE char *proc_name(proc_nr)
16327 int proc_nr;
16328 {
16329 if (proc_nr == ANY) return "ANY";
16330 return proc_addr(proc_nr)->p_name;
16331 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/dp8390.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
16400 /*
16401 * dp8390.c
16402 *
16403 * This file contains a ethernet device driver for NS dp8390 based ethernet
16404 * cards.
16405 *
16406 * The valid messages and their parameters are:
16407 *
16408 * m_type DL_PORT DL_PROC DL_COUNT DL_MODE DL_ADDR
16409 * |------------+----------+---------+----------+---------+---------|
16410 * | HARDINT | | | | | |
16411 * |------------|----------|---------|----------|---------|---------|
16412 * | DL_WRITE | port nr | proc nr | count | mode | address |
16413 * |------------|----------|---------|----------|---------|---------|
16414 * | DL_WRITEV | port nr | proc nr | count | mode | address |
16415 * |------------|----------|---------|----------|---------|---------|
16416 * | DL_READ | port nr | proc nr | count | | address |
16417 * |------------|----------|---------|----------|---------|---------|
16418 * | DL_READV | port nr | proc nr | count | | address |
16419 * |------------|----------|---------|----------|---------|---------|
16420 * | DL_INIT | port nr | proc nr | mode | | address |
16421 * |------------|----------|---------|----------|---------|---------|
16422 * | DL_GETSTAT | port nr | proc nr | | | address |
16423 * |------------|----------|---------|----------|---------|---------|
16424 * | DL_STOP | port_nr | | | | |
.Op 209 src/kernel/dp8390.c
16425 * |------------|----------|---------|----------|---------|---------|
16426 *
16427 * The messages sent are:
16428 *
16429 * m-type DL_POR T DL_PROC DL_COUNT DL_STAT DL_CLCK
16430 * |------------|----------|---------|----------|---------|---------|
16431 * |DL_TASK_REPL| port nr | proc nr | rd-count | err|stat| clock |
16432 * |------------|----------|---------|----------|---------|---------|
16433 *
16434 * m_type m3_i1 m3_i2 m3_ca1
16435 * |------------+---------+-----------+---------------|
16436 * |DL_INIT_REPL| port nr | last port | ethernet addr |
16437 * |------------|---------|-----------|---------------|
16438 *
16439 * Created: before Dec 28, 1992 by Philip Homburg <philip@cs.vu.nl>
16440 *
16441 * Modified to become a generic dp8390 driver.
16442 * March 10, 1994, Philip Homburg
16443 */
16444
16445 #include "kernel.h"
16446 #include <stdlib.h>
16447 #include <minix/com.h>
16448 #include <net/hton.h>
16449 #include <net/gen/ether.h>
16450 #include <net/gen/eth_io.h>
16451 #include "assert.h"
16452 INIT_ASSERT
16453 #include "protect.h"
16454 #include "dp8390.h"
16455 #include "proc.h"
16456
16457 #if ENABLE_NETWORKING
16458
16459 #if !__minix_vmd
16460 #define printW() (void) 0
16461 #define debug 0
16462 #endif
16463
16464 #define DE_PORT_NR 2
16465
16466 static dpeth_t de_table[DE_PORT_NR];
16467 static int int_pending[NR_IRQ_VECTORS];
16468 static int dpeth_tasknr= ANY;
16469 static u16_t eth_ign_proto;
16470
16471 /* Configuration */
16472 typedef struct dp_conf
16473 {
16474 port_t dpc_port;
16475 int dpc_irq;
16476 phys_bytes dpc_mem;
16477 char *dpc_envvar;
16478 segm_t dpc_prot_sel;
16479 } dp_conf_t;
16480
16481 dp_conf_t dp_conf[]= /* Card addresses */
16482 {
16483 /* I/O port, IRQ, Buffer address, Env. var, Buf selector. */
16484 { 0x280, 3, 0xD0000, "DPETH0", DP_ETH0_SELECTOR },
.Ep 210 src/kernel/dp8390.c
16485 { 0x300, 5, 0xCC000, "DPETH1", DP_ETH1_SELECTOR },
16486 };
16487
16488 /* Test if dp_conf has exactly DE_PORT_NR entries. If not then you will see
16489 * the error: "array size is negative".
16490 */
16491 extern int ___dummy[DE_PORT_NR == sizeof(dp_conf)/sizeof(dp_conf[0]) ? 1 : -1];
16492
16493
16494 _PROTOTYPE( static void do_vwrite, (message *mp, int from_int,
16495 int vectored) );
16496 _PROTOTYPE( static void do_vread, (message *mp, int vectored) );
16497 _PROTOTYPE( static void do_init, (message *mp) );
16498 _PROTOTYPE( static void do_int, (dpeth_t *dep) );
16499 _PROTOTYPE( static void do_getstat, (message *mp) );
16500 _PROTOTYPE( static void do_stop, (message *mp) );
16501 _PROTOTYPE( static void dp_init, (dpeth_t *dep) );
16502 _PROTOTYPE( static void dp_confaddr, (dpeth_t *dep) );
16503 _PROTOTYPE( static void dp_reinit, (dpeth_t *dep) );
16504 _PROTOTYPE( static void dp_reset, (dpeth_t *dep) );
16505 _PROTOTYPE( static void dp_check_ints, (dpeth_t *dep) );
16506 _PROTOTYPE( static void dp_recv, (dpeth_t *dep) );
16507 _PROTOTYPE( static void dp_send, (dpeth_t *dep) );
16508 _PROTOTYPE( static void dp_getblock, (dpeth_t *dep, int page,
16509 size_t offset, size_t size, void *dst) );
16510 _PROTOTYPE( static void dp_pio8_getblock, (dpeth_t *dep, int page,
16511 size_t offset, size_t size, void *dst) );
16512 _PROTOTYPE( static void dp_pio16_getblock, (dpeth_t *dep, int page,
16513 size_t offset, size_t size, void *dst) );
16514 _PROTOTYPE( static int dp_pkt2user, (dpeth_t *dep, int page,
16515 int length) );
16516 _PROTOTYPE( static void dp_user2nic, (dpeth_t *dep, iovec_dat_t *iovp,
16517 vir_bytes offset, int nic_addr, vir_bytes count) );
16518 _PROTOTYPE( static void dp_pio8_user2nic, (dpeth_t *dep,
16519 iovec_dat_t *iovp, vir_bytes offset,
16520 int nic_addr, vir_bytes count) );
16521 _PROTOTYPE( static void dp_pio16_user2nic, (dpeth_t *dep,
16522 iovec_dat_t *iovp, vir_bytes offset,
16523 int nic_addr, vir_bytes count) );
16524 _PROTOTYPE( static void dp_nic2user, (dpeth_t *dep, int nic_addr,
16525 iovec_dat_t *iovp, vir_bytes offset, vir_bytes count) );
16526 _PROTOTYPE( static void dp_pio8_nic2user, (dpeth_t *dep, int nic_addr,
16527 iovec_dat_t *iovp, vir_bytes offset, vir_bytes count) );
16528 _PROTOTYPE( static void dp_pio16_nic2user, (dpeth_t *dep, int nic_addr,
16529 iovec_dat_t *iovp, vir_bytes offset, vir_bytes count) );
16530 _PROTOTYPE( static void dp_next_iovec, (iovec_dat_t *iovp) );
16531 _PROTOTYPE( static int dp_handler, (int irq) );
16532 _PROTOTYPE( static void conf_hw, (dpeth_t *dep) );
16533 _PROTOTYPE( static void update_conf, (dpeth_t *dep, dp_conf_t *dcp) );
16534 _PROTOTYPE( static int calc_iovec_size, (iovec_dat_t *iovp) );
16535 _PROTOTYPE( static void reply, (dpeth_t *dep, int err, int may_block) );
16536 _PROTOTYPE( static void mess_reply, (message *req, message *reply) );
16537 _PROTOTYPE( static void get_userdata, (int user_proc,
16538 vir_bytes user_addr, vir_bytes count, void *loc_addr) );
16539 _PROTOTYPE( static void put_userdata, (int user_proc,
16540 vir_bytes user_addr, vir_bytes count, void *loc_addr) );
16541
16542 /*===========================================================================*
16543 * dpeth_task *
16544 *===========================================================================*/
.Op 211 src/kernel/dp8390.c
16545 void dp8390_task()
16546 {
16547 message m;
16548 int i, irq, r;
16549 dpeth_t *dep;
16550 long v;
16551
16552 dpeth_tasknr= proc_number(proc_ptr);
16553
16554 v= 0xFFFF;
16555 (void) env_parse("ETH_IGN_PROTO", "x", 0, &v, 0x0000L, 0xFFFFL);
16556 eth_ign_proto= htons((u16_t) v);
16557
16558 while (TRUE)
16559 {
16560 if ((r= receive(ANY, &m)) != OK)
16561 panic("dp8390: receive failed", r);
16562
16563 switch (m.m_type)
16564 {
16565 case DL_WRITE: do_vwrite(&m, FALSE, FALSE); break;
16566 case DL_WRITEV: do_vwrite(&m, FALSE, TRUE); break;
16567 case DL_READ: do_vread(&m, FALSE); break;
16568 case DL_READV: do_vread(&m, TRUE); break;
16569 case DL_INIT: do_init(&m); break;
16570 case DL_GETSTAT: do_getstat(&m); break;
16571 case DL_STOP: do_stop(&m); break;
16572 case HARD_INT:
16573 for (i= 0, dep= &de_table[0]; i<DE_PORT_NR; i++, dep++)
16574 {
16575 if (dep->de_mode != DEM_ENABLED)
16576 continue;
16577 assert(dep->de_flags & DEF_ENABLED);
16578 irq= dep->de_irq;
16579 assert(irq >= 0 && irq < NR_IRQ_VECTORS);
16580 if (int_pending[irq])
16581 {
16582 int_pending[irq]= 0;
16583 dp_check_ints(dep);
16584 do_int(dep);
16585 }
16586 }
16587 break;
16588 default:
16589 panic("dp8390: illegal message", m.m_type);
16590 }
16591 }
16592 }
16595 /*===========================================================================*
16596 * dp_dump *
16597 *===========================================================================*/
16598 void dp_dump()
16599 {
16600 dpeth_t *dep;
16601 int i, isr;
16602
16603 printf("n");
16604 for (i= 0, dep = &de_table[0]; i<DE_PORT_NR; i++, dep++)
.Ep 212 src/kernel/dp8390.c
16605 {
16606 if (dep->de_mode == DEM_DISABLED)
16607 printf("dp8390 port %d is disabledn", i);
16608 else if (dep->de_mode == DEM_SINK)
16609 printf("dp8390 port %d is in sink moden", i);
16610
16611 if (dep->de_mode != DEM_ENABLED)
16612 continue;
16613
16614 printf("dp8390 statistics of port %d:n", i);
16615
16616 printf("recvErr :%8ldt", dep->de_stat.ets_recvErr);
16617 printf("sendErr :%8ldt", dep->de_stat.ets_sendErr);
16618 printf("OVW :%8ldn", dep->de_stat.ets_OVW);
16619
16620 printf("CRCerr :%8ldt", dep->de_stat.ets_CRCerr);
16621 printf("frameAll :%8ldt", dep->de_stat.ets_frameAll);
16622 printf("missedP :%8ldn", dep->de_stat.ets_missedP);
16623
16624 printf("packetR :%8ldt", dep->de_stat.ets_packetR);
16625 printf("packetT :%8ldt", dep->de_stat.ets_packetT);
16626 printf("transDef :%8ldn", dep->de_stat.ets_transDef);
16627
16628 printf("collision :%8ldt", dep->de_stat.ets_collision);
16629 printf("transAb :%8ldt", dep->de_stat.ets_transAb);
16630 printf("carrSense :%8ldn", dep->de_stat.ets_carrSense);
16631
16632 printf("fifoUnder :%8ldt", dep->de_stat.ets_fifoUnder);
16633 printf("fifoOver :%8ldt", dep->de_stat.ets_fifoOver);
16634 printf("CDheartbeat:%8ldn", dep->de_stat.ets_CDheartbeat);
16635
16636 printf("OWC :%8ldt", dep->de_stat.ets_OWC);
16637
16638 isr= inb_reg0(dep, DP_ISR);
16639 printf("dp_isr = 0x%x + 0x%x, de_flags = 0x%xn", isr,
16640 inb_reg0(dep, DP_ISR), dep->de_flags);
16641 }
16642 }
16645 /*===========================================================================*
16646 * dp8390_stop *
16647 *===========================================================================*/
16648 void dp8390_stop()
16649 {
16650 message mess;
16651 int i;
16652
16653 for (i= 0; i<DE_PORT_NR; i++)
16654 {
16655 if (de_table[i].de_mode != DEM_ENABLED)
16656 continue;
16657 mess.m_type= DL_STOP;
16658 mess.DL_PORT= i;
16659 do_stop(&mess);
16660 }
16661 }
16664 /*===========================================================================*
.Op 213 src/kernel/dp8390.c
16665 * do_vwrite *
16666 *===========================================================================*/
16667 static void do_vwrite(mp, from_int, vectored)
16668 message *mp;
16669 int from_int;
16670 int vectored;
16671 {
16672 int port, count, size;
16673 int sendq_head;
16674 dpeth_t *dep;
16675
16676 port = mp->DL_PORT;
16677 count = mp->DL_COUNT;
16678 if (port < 0 || port >= DE_PORT_NR)
16679 panic("dp8390: illegal port", port);
16680 dep= &de_table[port];
16681 dep->de_client= mp->DL_PROC;
16682
16683 if (dep->de_mode == DEM_SINK)
16684 {
16685 assert(!from_int);
16686 dep->de_flags |= DEF_PACK_SEND;
16687 reply(dep, OK, FALSE);
16688 return;
16689 }
16690 assert(dep->de_mode == DEM_ENABLED);
16691 assert(dep->de_flags & DEF_ENABLED);
16692 if (dep->de_flags & DEF_SEND_AVAIL)
16693 panic("dp8390: send already in progress", NO_NUM);
16694
16695 sendq_head= dep->de_sendq_head;
16696 if (dep->de_sendq[sendq_head].sq_filled)
16697 {
16698 if (from_int)
16699 panic("dp8390: should not be sendingn", NO_NUM);
16700 dep->de_sendmsg= *mp;
16701 dep->de_flags |= DEF_SEND_AVAIL;
16702 reply(dep, OK, FALSE);
16703 return;
16704 }
16705 assert(!(dep->de_flags & DEF_PACK_SEND));
16706
16707 if (vectored)
16708 {
16709 get_userdata(mp->DL_PROC, (vir_bytes) mp->DL_ADDR,
16710 (count > IOVEC_NR ? IOVEC_NR : count) *
16711 sizeof(iovec_t), dep->de_write_iovec.iod_iovec);
16712 dep->de_write_iovec.iod_iovec_s = count;
16713 dep->de_write_iovec.iod_proc_nr = mp->DL_PROC;
16714 dep->de_write_iovec.iod_iovec_addr = (vir_bytes) mp->DL_ADDR;
16715
16716 dep->de_tmp_iovec = dep->de_write_iovec;
16717 size = calc_iovec_size(&dep->de_tmp_iovec);
16718 }
16719 else
16720 {
16721 dep->de_write_iovec.iod_iovec[0].iov_addr =
16722 (vir_bytes) mp->DL_ADDR;
16723 dep->de_write_iovec.iod_iovec[0].iov_size =
16724 mp->DL_COUNT;
.Ep 214 src/kernel/dp8390.c
16725 dep->de_write_iovec.iod_iovec_s = 1;
16726 dep->de_write_iovec.iod_proc_nr = mp->DL_PROC;
16727 dep->de_write_iovec.iod_iovec_addr = 0;
16728 size= mp->DL_COUNT;
16729 }
16730 if (size < ETH_MIN_PACK_SIZE || size > ETH_MAX_PACK_SIZE)
16731 {
16732 panic("dp8390: invalid packet size", size);
16733 }
16734 (dep->de_user2nicf)(dep, &dep->de_write_iovec, 0,
16735 dep->de_sendq[sendq_head].sq_sendpage * DP_PAGESIZE,
16736 size);
16737 dep->de_sendq[sendq_head].sq_filled= TRUE;
16738 if (dep->de_sendq_tail == sendq_head)
16739 {
16740 outb_reg0(dep, DP_TPSR, dep->de_sendq[sendq_head].sq_sendpage);
16741 outb_reg0(dep, DP_TBCR1, size >> 8);
16742 outb_reg0(dep, DP_TBCR0, size & 0xff);
16743 outb_reg0(dep, DP_CR, CR_TXP); /* there it goes.. */
16744 }
16745 else
16746 dep->de_sendq[sendq_head].sq_size= size;
16747
16748 if (++sendq_head == dep->de_sendq_nr)
16749 sendq_head= 0;
16750 assert(sendq_head < SENDQ_NR);
16751 dep->de_sendq_head= sendq_head;
16752
16753 dep->de_flags |= DEF_PACK_SEND;
16754
16755 /* If the interrupt handler called, don't send a reply. The reply
16756 * will be sent after all interrupts are handled.
16757 */
16758 if (from_int)
16759 return;
16760 reply(dep, OK, FALSE);
16761
16762 assert(dep->de_mode == DEM_ENABLED);
16763 assert(dep->de_flags & DEF_ENABLED);
16764 }
16767 /*===========================================================================*
16768 * do_vread *
16769 *===========================================================================*/
16770 static void do_vread(mp, vectored)
16771 message *mp;
16772 int vectored;
16773 {
16774 int port, count;
16775 int size;
16776 dpeth_t *dep;
16777
16778 port = mp->DL_PORT;
16779 count = mp->DL_COUNT;
16780 if (port < 0 || port >= DE_PORT_NR)
16781 panic("dp8390: illegal port", port);
16782 dep= &de_table[port];
16783 dep->de_client= mp->DL_PROC;
16784 if (dep->de_mode == DEM_SINK)
.Op 215 src/kernel/dp8390.c
16785 {
16786 reply(dep, OK, FALSE);
16787 return;
16788 }
16789 assert(dep->de_mode == DEM_ENABLED);
16790 assert(dep->de_flags & DEF_ENABLED);
16791
16792 if(dep->de_flags & DEF_READING)
16793 panic("dp8390: read already in progress", NO_NUM);
16794
16795 if (vectored)
16796 {
16797 get_userdata(mp->DL_PROC, (vir_bytes) mp->DL_ADDR,
16798 (count > IOVEC_NR ? IOVEC_NR : count) *
16799 sizeof(iovec_t), dep->de_read_iovec.iod_iovec);
16800 dep->de_read_iovec.iod_iovec_s = count;
16801 dep->de_read_iovec.iod_proc_nr = mp->DL_PROC;
16802 dep->de_read_iovec.iod_iovec_addr = (vir_bytes) mp->DL_ADDR;
16803
16804 dep->de_tmp_iovec = dep->de_read_iovec;
16805 size= calc_iovec_size(&dep->de_tmp_iovec);
16806 }
16807 else
16808 {
16809 dep->de_read_iovec.iod_iovec[0].iov_addr =
16810 (vir_bytes) mp->DL_ADDR;
16811 dep->de_read_iovec.iod_iovec[0].iov_size =
16812 mp->DL_COUNT;
16813 dep->de_read_iovec.iod_iovec_s = 1;
16814 dep->de_read_iovec.iod_proc_nr = mp->DL_PROC;
16815 dep->de_read_iovec.iod_iovec_addr = 0;
16816 size= count;
16817 }
16818 if (size < ETH_MAX_PACK_SIZE)
16819 panic("dp8390: wrong packet size", size);
16820 dep->de_flags |= DEF_READING;
16821
16822 dp_recv(dep);
16823
16824 if ((dep->de_flags & (DEF_READING|DEF_STOPPED)) ==
16825 (DEF_READING|DEF_STOPPED))
16826 {
16827 /* The chip is stopped, and all arrived packets are
16828 * delivered.
16829 */
16830 dp_reset(dep);
16831 }
16832 reply(dep, OK, FALSE);
16833 }
16836 /*===========================================================================*
16837 * do_init *
16838 *===========================================================================*/
16839 static void do_init(mp)
16840 message *mp;
16841 {
16842 int port;
16843 dpeth_t *dep;
16844 message reply_mess;
.Ep 216 src/kernel/dp8390.c
16845
16846 port = mp->DL_PORT;
16847 if (port < 0 || port >= DE_PORT_NR)
16848 {
16849 reply_mess.m_type= DL_INIT_REPLY;
16850 reply_mess.m3_i1= ENXIO;
16851 mess_reply(mp, &reply_mess);
16852 return;
16853 }
16854 dep= &de_table[port];
16855 if (dep->de_mode == DEM_DISABLED)
16856 {
16857 /* This is the default, try to (re)locate the device. */
16858 conf_hw(dep);
16859 if (dep->de_mode == DEM_DISABLED)
16860 {
16861 /* Probe failed, or the device is configured off. */
16862 reply_mess.m_type= DL_INIT_REPLY;
16863 reply_mess.m3_i1= ENXIO;
16864 mess_reply(mp, &reply_mess);
16865 return;
16866 }
16867 if (dep->de_mode == DEM_ENABLED)
16868 dp_init(dep);
16869 }
16870
16871 if (dep->de_mode == DEM_SINK)
16872 {
16873 dep->de_address.ea_addr[0] =
16874 dep->de_address.ea_addr[1] =
16875 dep->de_address.ea_addr[2] =
16876 dep->de_address.ea_addr[3] =
16877 dep->de_address.ea_addr[4] =
16878 dep->de_address.ea_addr[5] = 0;
16879 dp_confaddr(dep);
16880 reply_mess.m_type = DL_INIT_REPLY;
16881 reply_mess.m3_i1 = mp->DL_PORT;
16882 reply_mess.m3_i2 = DE_PORT_NR;
16883 *(ether_addr_t *) reply_mess.m3_ca1 = dep->de_address;
16884 mess_reply(mp, &reply_mess);
16885 return;
16886 }
16887 assert(dep->de_mode == DEM_ENABLED);
16888 assert(dep->de_flags & DEF_ENABLED);
16889
16890 dep->de_flags &= ~(DEF_PROMISC | DEF_MULTI | DEF_BROAD);
16891
16892 if (mp->DL_MODE & DL_PROMISC_REQ)
16893 dep->de_flags |= DEF_PROMISC | DEF_MULTI | DEF_BROAD;
16894 if (mp->DL_MODE & DL_MULTI_REQ)
16895 dep->de_flags |= DEF_MULTI;
16896 if (mp->DL_MODE & DL_BROAD_REQ)
16897 dep->de_flags |= DEF_BROAD;
16898
16899 dep->de_client = mp->m_source;
16900 dp_reinit(dep);
16901
16902 reply_mess.m_type = DL_INIT_REPLY;
16903 reply_mess.m3_i1 = mp->DL_PORT;
16904 reply_mess.m3_i2 = DE_PORT_NR;
.Op 217 src/kernel/dp8390.c
16905 *(ether_addr_t *) reply_mess.m3_ca1 = dep->de_address;
16906
16907 mess_reply(mp, &reply_mess);
16908 }
16910 /*===========================================================================*
16911 * do_int *
16912 *===========================================================================*/
16913 static void do_int(dep)
16914 dpeth_t *dep;
16915 {
16916 if (dep->de_flags & (DEF_PACK_SEND | DEF_PACK_RECV))
16917 reply(dep, OK, TRUE);
16918 }
16921 /*===========================================================================*
16922 * do_getstat *
16923 *===========================================================================*/
16924 static void do_getstat(mp)
16925 message *mp;
16926 {
16927 int port;
16928 dpeth_t *dep;
16929
16930 port = mp->DL_PORT;
16931 if (port < 0 || port >= DE_PORT_NR)
16932 panic("dp8390: illegal port", port);
16933 dep= &de_table[port];
16934 dep->de_client= mp->DL_PROC;
16935 if (dep->de_mode == DEM_SINK)
16936 {
16937 put_userdata(mp->DL_PROC, (vir_bytes) mp->DL_ADDR,
16938 (vir_bytes) sizeof(dep->de_stat), &dep->de_stat);
16939 reply(dep, OK, FALSE);
16940 return;
16941 }
16942 assert(dep->de_mode == DEM_ENABLED);
16943 assert(dep->de_flags & DEF_ENABLED);
16944
16945 dep->de_stat.ets_CRCerr += inb_reg0(dep, DP_CNTR0);
16946 dep->de_stat.ets_frameAll += inb_reg0(dep, DP_CNTR1);
16947 dep->de_stat.ets_missedP += inb_reg0(dep, DP_CNTR2);
16948
16949 put_userdata(mp->DL_PROC, (vir_bytes) mp->DL_ADDR,
16950 (vir_bytes) sizeof(dep->de_stat), &dep->de_stat);
16951 reply(dep, OK, FALSE);
16952 }
16955 /*===========================================================================*
16956 * do_stop *
16957 *===========================================================================*/
16958 static void do_stop(mp)
16959 message *mp;
16960 {
16961 int port;
16962 dpeth_t *dep;
16963
16964 port = mp->DL_PORT;
.Ep 218 src/kernel/dp8390.c
16965
16966 if (port < 0 || port >= DE_PORT_NR)
16967 panic("dp8390: illegal port", port);
16968 dep= &de_table[port];
16969 if (dep->de_mode == DEM_SINK)
16970 return;
16971 assert(dep->de_mode == DEM_ENABLED);
16972
16973 if (!(dep->de_flags & DEF_ENABLED))
16974 return;
16975
16976 outb_reg0(dep, DP_CR, CR_STP | CR_DM_ABORT);
16977 (dep->de_stopf)(dep);
16978
16979 dep->de_flags= DEF_EMPTY;
16980 }
16983 /*===========================================================================*
16984 * dp_init *
16985 *===========================================================================*/
16986 static void dp_init(dep)
16987 dpeth_t *dep;
16988 {
16989 int dp_rcr_reg;
16990 int i;
16991
16992 /* General initialization */
16993 dep->de_flags = DEF_EMPTY;
16994 (*dep->de_initf)(dep);
16995
16996 dp_confaddr(dep);
16997
16998 /* Initialization of the dp8390 */
16999 outb_reg0(dep, DP_CR, CR_PS_P0 | CR_STP | CR_DM_ABORT);
17000 outb_reg0(dep, DP_IMR, 0);
17001 outb_reg0(dep, DP_PSTART, dep->de_startpage);
17002 outb_reg0(dep, DP_PSTOP, dep->de_stoppage);
17003 outb_reg0(dep, DP_BNRY, dep->de_startpage);
17004 outb_reg0(dep, DP_RCR, RCR_MON);
17005 outb_reg0(dep, DP_TCR, TCR_NORMAL);
17006 if (dep->de_16bit)
17007 outb_reg0(dep, DP_DCR, DCR_WORDWIDE | DCR_8BYTES | DCR_BMS);
17008 else
17009 outb_reg0(dep, DP_DCR, DCR_BYTEWIDE | DCR_8BYTES | DCR_BMS);
17010 outb_reg0(dep, DP_RBCR0, 0);
17011 outb_reg0(dep, DP_RBCR1, 0);
17012 outb_reg0(dep, DP_ISR, 0xFF);
17013 outb_reg0(dep, DP_CR, CR_PS_P1 | CR_DM_ABORT);
17014
17015 outb_reg1(dep, DP_PAR0, dep->de_address.ea_addr[0]);
17016 outb_reg1(dep, DP_PAR1, dep->de_address.ea_addr[1]);
17017 outb_reg1(dep, DP_PAR2, dep->de_address.ea_addr[2]);
17018 outb_reg1(dep, DP_PAR3, dep->de_address.ea_addr[3]);
17019 outb_reg1(dep, DP_PAR4, dep->de_address.ea_addr[4]);
17020 outb_reg1(dep, DP_PAR5, dep->de_address.ea_addr[5]);
17021
17022 outb_reg1(dep, DP_MAR0, 0xff);
17023 outb_reg1(dep, DP_MAR1, 0xff);
17024 outb_reg1(dep, DP_MAR2, 0xff);
.Op 219 src/kernel/dp8390.c
17025 outb_reg1(dep, DP_MAR3, 0xff);
17026 outb_reg1(dep, DP_MAR4, 0xff);
17027 outb_reg1(dep, DP_MAR5, 0xff);
17028 outb_reg1(dep, DP_MAR6, 0xff);
17029 outb_reg1(dep, DP_MAR7, 0xff);
17030
17031 outb_reg1(dep, DP_CURR, dep->de_startpage + 1);
17032 outb_reg1(dep, DP_CR, CR_PS_P0 | CR_DM_ABORT);
17033
17034 dp_rcr_reg = 0;
17035 if (dep->de_flags & DEF_PROMISC)
17036 dp_rcr_reg |= RCR_AB | RCR_PRO | RCR_AM;
17037 if (dep->de_flags & DEF_BROAD)
17038 dp_rcr_reg |= RCR_AB;
17039 if (dep->de_flags & DEF_MULTI)
17040 dp_rcr_reg |= RCR_AM;
17041 outb_reg0(dep, DP_RCR, dp_rcr_reg);
17042 inb_reg0(dep, DP_CNTR0); /* reset counters by reading */
17043 inb_reg0(dep, DP_CNTR1);
17044 inb_reg0(dep, DP_CNTR2);
17045
17046 outb_reg0(dep, DP_IMR, IMR_PRXE | IMR_PTXE | IMR_RXEE | IMR_TXEE |
17047 IMR_OVWE | IMR_CNTE);
17048 outb_reg0(dep, DP_CR, CR_STA | CR_DM_ABORT);
17049
17050 /* Finish the initialization. */
17051 dep->de_flags |= DEF_ENABLED;
17052 for (i= 0; i<dep->de_sendq_nr; i++)
17053 dep->de_sendq[i].sq_filled= 0;
17054 dep->de_sendq_head= 0;
17055 dep->de_sendq_tail= 0;
17056 if (!dep->de_prog_IO)
17057 {
17058 dep->de_user2nicf= dp_user2nic;
17059 dep->de_nic2userf= dp_nic2user;
17060 dep->de_getblockf= dp_getblock;
17061 }
17062 else if (dep->de_16bit)
17063 {
17064 dep->de_user2nicf= dp_pio16_user2nic;
17065 dep->de_nic2userf= dp_pio16_nic2user;
17066 dep->de_getblockf= dp_pio16_getblock;
17067 }
17068 else
17069 {
17070 dep->de_user2nicf= dp_pio8_user2nic;
17071 dep->de_nic2userf= dp_pio8_nic2user;
17072 dep->de_getblockf= dp_pio8_getblock;
17073 }
17074
17075 /* set the interrupt handler */
17076 put_irq_handler(dep->de_irq, dp_handler);
17077 enable_irq(dep->de_irq);
17078 }
17081 /*===========================================================================*
17082 * dp_confaddr *
17083 *===========================================================================*/
17084 static void dp_confaddr(dep)
.Ep 220 src/kernel/dp8390.c
17085 dpeth_t *dep;
17086 {
17087 int i;
17088 char eakey[16];
17089 static char eafmt[]= "x:x:x:x:x:x";
17090 long v;
17091
17092 /* User defined ethernet address? */
17093 strcpy(eakey, dp_conf[dep-de_table].dpc_envvar);
17094 strcat(eakey, "_EA");
17095
17096 for (i= 0; i < 6; i++)
17097 {
17098 v= dep->de_address.ea_addr[i];
17099 if (env_parse(eakey, eafmt, i, &v, 0x00L, 0xFFL) != EP_SET)
17100 break;
17101 dep->de_address.ea_addr[i]= v;
17102 }
17103
17104 if (i != 0 && i != 6)
17105 {
17106 /* It's all or nothing; force a panic. */
17107 (void) env_parse(eakey, "?", 0, &v, 0L, 0L);
17108 }
17109 }
17112 /*===========================================================================*
17113 * dp_reinit *
17114 *===========================================================================*/
17115 static void dp_reinit(dep)
17116 dpeth_t *dep;
17117 {
17118 int dp_rcr_reg;
17119
17120 outb_reg0(dep, DP_CR, CR_PS_P0);
17121
17122 dp_rcr_reg = 0;
17123 if (dep->de_flags & DEF_PROMISC)
17124 dp_rcr_reg |= RCR_AB | RCR_PRO | RCR_AM;
17125 if (dep->de_flags & DEF_BROAD)
17126 dp_rcr_reg |= RCR_AB;
17127 if (dep->de_flags & DEF_MULTI)
17128 dp_rcr_reg |= RCR_AM;
17129 outb_reg0(dep, DP_RCR, dp_rcr_reg);
17130 }
17133 /*===========================================================================*
17134 * dp_reset *
17135 *===========================================================================*/
17136 static void dp_reset(dep)
17137 dpeth_t *dep;
17138 {
17139 int i;
17140
17141 /* Stop chip */
17142 outb_reg0(dep, DP_CR, CR_STP | CR_DM_ABORT);
17143 outb_reg0(dep, DP_RBCR0, 0);
17144 outb_reg0(dep, DP_RBCR1, 0);
.Op 221 src/kernel/dp8390.c
17145 for (i= 0; i < 0x1000 && ((inb_reg0(dep, DP_ISR) & ISR_RST) == 0); i++)
17146 ; /* Do nothing */
17147 outb_reg0(dep, DP_TCR, TCR_1EXTERNAL|TCR_OFST);
17148 outb_reg0(dep, DP_CR, CR_STA|CR_DM_ABORT);
17149 outb_reg0(dep, DP_TCR, TCR_NORMAL|TCR_OFST);
17150
17151 /* Acknowledge the ISR_RDC (remote dma) interrupt. */
17152 for (i= 0; i < 0x1000 && ((inb_reg0(dep, DP_ISR) & ISR_RDC) == 0); i++)
17153 ; /* Do nothing */
17154 outb_reg0(dep, DP_ISR, inb_reg0(dep, DP_ISR) & ~ISR_RDC);
17155
17156 /* Reset the transmit ring. If we were transmitting a packet, we
17157 * pretend that the packet is processed. Higher layers will
17158 * retransmit if the packet wasn't actually sent.
17159 */
17160 dep->de_sendq_head= dep->de_sendq_tail= 0;
17161 for (i= 0; i<dep->de_sendq_nr; i++)
17162 dep->de_sendq[i].sq_filled= 0;
17163 dp_send(dep);
17164 dep->de_flags &= ~DEF_STOPPED;
17165 }
17168 /*===========================================================================*
17169 * dp_check_ints *
17170 *===========================================================================*/
17171 static void dp_check_ints(dep)
17172 dpeth_t *dep;
17173 {
17174 int isr, tsr;
17175 int size, sendq_tail;
17176
17177 if (!(dep->de_flags & DEF_ENABLED))
17178 panic("dp8390: got premature interrupt", NO_NUM);
17179
17180 for(;;)
17181 {
17182 isr = inb_reg0(dep, DP_ISR);
17183 if (!isr)
17184 break;
17185 outb_reg0(dep, DP_ISR, isr);
17186 if (isr & (ISR_PTX|ISR_TXE))
17187 {
17188 if (isr & ISR_TXE)
17189 {
17190 #if DEBUG
17191 { printf("dp8390: got send Errorn"); }
17192 #endif
17193 dep->de_stat.ets_sendErr++;
17194 }
17195 else
17196 {
17197 tsr = inb_reg0(dep, DP_TSR);
17198
17199 if (tsr & TSR_PTX) dep->de_stat.ets_packetT++;
17200 if (tsr & TSR_DFR) dep->de_stat.ets_transDef++;
17201 if (tsr & TSR_COL) dep->de_stat.ets_collision++;
17202 if (tsr & TSR_ABT) dep->de_stat.ets_transAb++;
17203 if (tsr & TSR_CRS) dep->de_stat.ets_carrSense++;
17204 if (tsr & TSR_FU
.Ep 222 src/kernel/dp8390.c
17205 && ++dep->de_stat.ets_fifoUnder <= 10)
17206 {
17207 printf("dp8390: fifo underrunn");
17208 }
17209 if (tsr & TSR_CDH
17210 && ++dep->de_stat.ets_CDheartbeat <= 10)
17211 {
17212 printf(
17213 "dp8390: CD heart beat failuren");
17214 }
17215 if (tsr & TSR_OWC) dep->de_stat.ets_OWC++;
17216 }
17217 sendq_tail= dep->de_sendq_tail;
17218
17219 if (!(dep->de_sendq[sendq_tail].sq_filled))
17220 {
17221 /* Software bug? */
17222 assert(!debug);
17223
17224 /* Or hardware bug? */
17225 printf(
17226 "dp8390: transmit interrupt, but not sendingn");
17227 continue;
17228 }
17229 dep->de_sendq[sendq_tail].sq_filled= 0;
17230 if (++sendq_tail == dep->de_sendq_nr)
17231 sendq_tail= 0;
17232 dep->de_sendq_tail= sendq_tail;
17233 if (dep->de_sendq[sendq_tail].sq_filled)
17234 {
17235 size= dep->de_sendq[sendq_tail].sq_size;
17236 outb_reg0(dep, DP_TPSR,
17237 dep->de_sendq[sendq_tail].sq_sendpage);
17238 outb_reg0(dep, DP_TBCR1, size >> 8);
17239 outb_reg0(dep, DP_TBCR0, size & 0xff);
17240 outb_reg0(dep, DP_CR, CR_TXP); /* there is goes.. */
17241 }
17242 if (dep->de_flags & DEF_SEND_AVAIL)
17243 dp_send(dep);
17244 }
17245
17246 if (isr & ISR_PRX)
17247 dp_recv(dep);
17248
17249 if (isr & ISR_RXE) dep->de_stat.ets_recvErr++;
17250 if (isr & ISR_CNT)
17251 {
17252 dep->de_stat.ets_CRCerr += inb_reg0(dep, DP_CNTR0);
17253 dep->de_stat.ets_frameAll += inb_reg0(dep, DP_CNTR1);
17254 dep->de_stat.ets_missedP += inb_reg0(dep, DP_CNTR2);
17255 }
17256 if (isr & ISR_OVW)
17257 {
17258 #if DEBUG
17259 { printW(); printf("dp8390: got overwrite warningn"); }
17260 #endif
17261 }
17262 if (isr & ISR_RDC)
17263 {
17264 /* Nothing to do */
.Op 223 src/kernel/dp8390.c
17265 }
17266 if (isr & ISR_RST)
17267 {
17268 /* this means we got an interrupt but the ethernet
17269 * chip is shutdown. We set the flag DEF_STOPPED,
17270 * and continue processing arrived packets. When the
17271 * receive buffer is empty, we reset the dp8390.
17272 */
17273 #if DEBUG
17274 { printW(); printf("dp8390: NIC stoppedn"); }
17275 #endif
17276 dep->de_flags |= DEF_STOPPED;
17277 break;
17278 }
17279 }
17280 if ((dep->de_flags & (DEF_READING|DEF_STOPPED)) ==
17281 (DEF_READING|DEF_STOPPED))
17282 {
17283 /* The chip is stopped, and all arrived packets are
17284 * delivered.
17285 */
17286 dp_reset(dep);
17287 }
17288 }
17291 /*===========================================================================*
17292 * dp_recv *
17293 *===========================================================================*/
17294 static void dp_recv(dep)
17295 dpeth_t *dep;
17296 {
17297 dp_rcvhdr_t header;
17298 unsigned pageno, curr, next;
17299 vir_bytes length;
17300 int packet_processed, r;
17301 u16_t eth_type;
17302
17303 packet_processed = FALSE;
17304 pageno = inb_reg0(dep, DP_BNRY) + 1;
17305 if (pageno == dep->de_stoppage) pageno = dep->de_startpage;
17306
17307 do
17308 {
17309 outb_reg0(dep, DP_CR, CR_PS_P1);
17310 curr = inb_reg1(dep, DP_CURR);
17311 outb_reg0(dep, DP_CR, CR_PS_P0);
17312
17313 if (curr == pageno) break;
17314
17315 (dep->de_getblockf)(dep, pageno, (size_t)0, sizeof(header),
17316 &header);
17317 (dep->de_getblockf)(dep, pageno, sizeof(header) +
17318 2*sizeof(ether_addr_t), sizeof(eth_type), &eth_type);
17319
17320 length = (header.dr_rbcl | (header.dr_rbch << 8)) -
17321 sizeof(dp_rcvhdr_t);
17322 next = header.dr_next;
17323 if (length < 60 || length > 1514)
17324 {
.Ep 224 src/kernel/dp8390.c
17325 printf(
17326 "dp8390: packet with strange length arrived: %dn",
17327 length);
17328 next= curr;
17329 }
17330 else if (next < dep->de_startpage || next >= dep->de_stoppage)
17331 {
17332 printf("dp8390: strange next pagen");
17333 next= curr;
17334 }
17335 else if (eth_type == eth_ign_proto)
17336 {
17337 /* hack: ignore packets of a given protocol, useful
17338 * if you share a net with 80 computers sending
17339 * Amoeba FLIP broadcasts. (Protocol 0x8146.)
17340 */
17341 static int first= 1;
17342 if (first)
17343 {
17344 first= 0;
17345 printW();
17346 printf("dropping proto %04x packetn",
17347 ntohs(eth_ign_proto));
17348 }
17349 dep->de_stat.ets_packetR++;
17350 next = curr;
17351 }
17352 else if (header.dr_status & RSR_FO)
17353 {
17354 /* This is very serious, so we issue a warning and
17355 * reset the buffers */
17356 printf(
17357 "dp8390: fifo overrun, resetting receive buffern");
17358 dep->de_stat.ets_fifoOver++;
17359 next = curr;
17360 }
17361 else if ((header.dr_status & RSR_PRX) &&
17362 (dep->de_flags & DEF_ENABLED))
17363 {
17364 r = dp_pkt2user(dep, pageno, length);
17365 if (r != OK)
17366 return;
17367
17368 packet_processed = TRUE;
17369 dep->de_stat.ets_packetR++;
17370 }
17371 if (next == dep->de_startpage)
17372 outb_reg0(dep, DP_BNRY, dep->de_stoppage - 1);
17373 else
17374 outb_reg0(dep, DP_BNRY, next - 1);
17375
17376 pageno = next;
17377 }
17378 while (!packet_processed);
17379 }
17382 /*===========================================================================*
17383 * dp_send *
17384 *===========================================================================*/
.Op 225 src/kernel/dp8390.c
17385 static void dp_send(dep)
17386 dpeth_t *dep;
17387 {
17388 if (!(dep->de_flags & DEF_SEND_AVAIL))
17389 return;
17390
17391 dep->de_flags &= ~DEF_SEND_AVAIL;
17392 switch(dep->de_sendmsg.m_type)
17393 {
17394 case DL_WRITE: do_vwrite(&dep->de_sendmsg, TRUE, FALSE); break;
17395 case DL_WRITEV: do_vwrite(&dep->de_sendmsg, TRUE, TRUE); break;
17396 default:
17397 panic("dp8390: wrong type:", dep->de_sendmsg.m_type);
17398 break;
17399 }
17400 }
17403 /*===========================================================================*
17404 * dp_getblock *
17405 *===========================================================================*/
17406 static void dp_getblock(dep, page, offset, size, dst)
17407 dpeth_t *dep;
17408 int page;
17409 size_t offset;
17410 size_t size;
17411 void *dst;
17412 {
17413 u16_t *ha;
17414 int i;
17415
17416 ha = (u16_t *) dst;
17417 offset = page * DP_PAGESIZE + offset;
17418 assert(!(size & 1));
17419 for (i= 0; i<size; i+=2)
17420 {
17421 *ha = mem_rdw(dep->de_memsegm, offset+i);
17422 ha++;
17423 }
17424 }
17427 /*===========================================================================*
17428 * dp_pio8_getblock *
17429 *===========================================================================*/
17430 static void dp_pio8_getblock(dep, page, offset, size, dst)
17431 dpeth_t *dep;
17432 int page;
17433 size_t offset;
17434 size_t size;
17435 void *dst;
17436 {
17437 u8_t *ha;
17438 int i;
17439
17440 ha = (u8_t *) dst;
17441 offset = page * DP_PAGESIZE + offset;
17442 outb_reg0(dep, DP_RBCR0, size & 0xFF);
17443 outb_reg0(dep, DP_RBCR1, size >> 8);
17444 outb_reg0(dep, DP_RSAR0, offset & 0xFF);
.Ep 226 src/kernel/dp8390.c
17445 outb_reg0(dep, DP_RSAR1, offset >> 8);
17446 outb_reg0(dep, DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
17447
17448 for (i= 0; i<size; i++)
17449 ha[i]= in_byte(dep->de_data_port);
17450 }
17453 /*===========================================================================*
17454 * dp_pio16_getblock *
17455 *===========================================================================*/
17456 static void dp_pio16_getblock(dep, page, offset, size, dst)
17457 dpeth_t *dep;
17458 int page;
17459 size_t offset;
17460 size_t size;
17461 void *dst;
17462 {
17463 u16_t *ha;
17464 int i;
17465
17466 ha = (u16_t *) dst;
17467 offset = page * DP_PAGESIZE + offset;
17468 outb_reg0(dep, DP_RBCR0, size & 0xFF);
17469 outb_reg0(dep, DP_RBCR1, size >> 8);
17470 outb_reg0(dep, DP_RSAR0, offset & 0xFF);
17471 outb_reg0(dep, DP_RSAR1, offset >> 8);
17472 outb_reg0(dep, DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
17473
17474 assert (!(size & 1));
17475 size /= 2;
17476 for (i= 0; i<size; i++)
17477 ha[i]= in_word(dep->de_data_port);
17478 }
17481 /*===========================================================================*
17482 * dp_pkt2user *
17483 *===========================================================================*/
17484 static int dp_pkt2user(dep, page, length)
17485 dpeth_t *dep;
17486 int page, length;
17487 {
17488 int last, count;
17489
17490 if (!(dep->de_flags & DEF_READING))
17491 return EGENERIC;
17492
17493 last = page + (length - 1) / DP_PAGESIZE;
17494 if (last >= dep->de_stoppage)
17495 {
17496 count = (dep->de_stoppage - page) * DP_PAGESIZE -
17497 sizeof(dp_rcvhdr_t);
17498
17499 /* Save read_iovec since we need it twice. */
17500 dep->de_tmp_iovec = dep->de_read_iovec;
17501 (dep->de_nic2userf)(dep, page * DP_PAGESIZE +
17502 sizeof(dp_rcvhdr_t), &dep->de_tmp_iovec, 0, count);
17503 (dep->de_nic2userf)(dep, dep->de_startpage * DP_PAGESIZE,
17504 &dep->de_read_iovec, count, length - count);
.Op 227 src/kernel/dp8390.c
17505 }
17506 else
17507 {
17508 (dep->de_nic2userf)(dep, page * DP_PAGESIZE +
17509 sizeof(dp_rcvhdr_t), &dep->de_read_iovec, 0, length);
17510 }
17511
17512 dep->de_read_s = length;
17513 dep->de_flags |= DEF_PACK_RECV;
17514 dep->de_flags &= ~DEF_READING;
17515
17516 return OK;
17517 }
17520 /*===========================================================================*
17521 * dp_user2nic *
17522 *===========================================================================*/
17523 static void dp_user2nic(dep, iovp, offset, nic_addr, count)
17524 dpeth_t *dep;
17525 iovec_dat_t *iovp;
17526 vir_bytes offset;
17527 int nic_addr;
17528 vir_bytes count;
17529 {
17530 phys_bytes phys_hw, phys_user;
17531 int bytes, i;
17532
17533 phys_hw = dep->de_linmem + nic_addr;
17534
17535 i= 0;
17536 while (count > 0)
17537 {
17538 if (i >= IOVEC_NR)
17539 {
17540 dp_next_iovec(iovp);
17541 i= 0;
17542 continue;
17543 }
17544 assert(i < iovp->iod_iovec_s);
17545 if (offset >= iovp->iod_iovec[i].iov_size)
17546 {
17547 offset -= iovp->iod_iovec[i].iov_size;
17548 i++;
17549 continue;
17550 }
17551 bytes = iovp->iod_iovec[i].iov_size - offset;
17552 if (bytes > count)
17553 bytes = count;
17554
17555 phys_user = numap(iovp->iod_proc_nr,
17556 iovp->iod_iovec[i].iov_addr + offset, bytes);
17557 if (!phys_user)
17558 panic("dp8390: umap failedn", NO_NUM);
17559 phys_copy(phys_user, phys_hw, (phys_bytes) bytes);
17560 count -= bytes;
17561 phys_hw += bytes;
17562 offset += bytes;
17563 }
17564 assert(count == 0);
.Ep 228 src/kernel/dp8390.c
17565 }
17568 /*===========================================================================*
17569 * dp_pio8_user2nic *
17570 *===========================================================================*/
17571 static void dp_pio8_user2nic(dep, iovp, offset, nic_addr, count)
17572 dpeth_t *dep;
17573 iovec_dat_t *iovp;
17574 vir_bytes offset;
17575 int nic_addr;
17576 vir_bytes count;
17577 {
17578 phys_bytes phys_user;
17579 int bytes, i;
17580
17581 outb_reg0(dep, DP_ISR, ISR_RDC);
17582
17583 outb_reg0(dep, DP_RBCR0, count & 0xFF);
17584 outb_reg0(dep, DP_RBCR1, count >> 8);
17585 outb_reg0(dep, DP_RSAR0, nic_addr & 0xFF);
17586 outb_reg0(dep, DP_RSAR1, nic_addr >> 8);
17587 outb_reg0(dep, DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
17588
17589 i= 0;
17590 while (count > 0)
17591 {
17592 if (i >= IOVEC_NR)
17593 {
17594 dp_next_iovec(iovp);
17595 i= 0;
17596 continue;
17597 }
17598 assert(i < iovp->iod_iovec_s);
17599 if (offset >= iovp->iod_iovec[i].iov_size)
17600 {
17601 offset -= iovp->iod_iovec[i].iov_size;
17602 i++;
17603 continue;
17604 }
17605 bytes = iovp->iod_iovec[i].iov_size - offset;
17606 if (bytes > count)
17607 bytes = count;
17608
17609 phys_user = numap(iovp->iod_proc_nr,
17610 iovp->iod_iovec[i].iov_addr + offset, bytes);
17611 if (!phys_user)
17612 panic("dp8390: umap failedn", NO_NUM);
17613 port_write_byte(dep->de_data_port, phys_user, bytes);
17614 count -= bytes;
17615 offset += bytes;
17616 }
17617 assert(count == 0);
17618
17619 for (i= 0; i<100; i++)
17620 {
17621 if (inb_reg0(dep, DP_ISR) & ISR_RDC)
17622 break;
17623 }
17624 if (i == 100)
.Op 229 src/kernel/dp8390.c
17625 {
17626 panic("dp8390: remote dma failed to complete", NO_NUM);
17627 }
17628 }
17631 /*===========================================================================*
17632 * dp_pio16_user2nic *
17633 *===========================================================================*/
17634 static void dp_pio16_user2nic(dep, iovp, offset, nic_addr, count)
17635 dpeth_t *dep;
17636 iovec_dat_t *iovp;
17637 vir_bytes offset;
17638 int nic_addr;
17639 vir_bytes count;
17640 {
17641 phys_bytes phys_user;
17642 vir_bytes ecount;
17643 int bytes, i;
17644 u8_t two_bytes[2];
17645 phys_bytes phys_2bytes;
17646 int odd_byte;
17647
17648 ecount= (count+1) & ~1;
17649 phys_2bytes = vir2phys(two_bytes);
17650 odd_byte= 0;
17651
17652 outb_reg0(dep, DP_ISR, ISR_RDC);
17653 outb_reg0(dep, DP_RBCR0, ecount & 0xFF);
17654 outb_reg0(dep, DP_RBCR1, ecount >> 8);
17655 outb_reg0(dep, DP_RSAR0, nic_addr & 0xFF);
17656 outb_reg0(dep, DP_RSAR1, nic_addr >> 8);
17657 outb_reg0(dep, DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
17658
17659 i= 0;
17660 while (count > 0)
17661 {
17662 if (i >= IOVEC_NR)
17663 {
17664 dp_next_iovec(iovp);
17665 i= 0;
17666 continue;
17667 }
17668 assert(i < iovp->iod_iovec_s);
17669 if (offset >= iovp->iod_iovec[i].iov_size)
17670 {
17671 offset -= iovp->iod_iovec[i].iov_size;
17672 i++;
17673 continue;
17674 }
17675 bytes = iovp->iod_iovec[i].iov_size - offset;
17676 if (bytes > count)
17677 bytes = count;
17678
17679 phys_user = numap(iovp->iod_proc_nr,
17680 iovp->iod_iovec[i].iov_addr + offset, bytes);
17681 if (!phys_user)
17682 panic("dp8390: umap failedn", NO_NUM);
17683 if (odd_byte)
17684 {
.Ep 230 src/kernel/dp8390.c
17685 phys_copy(phys_user, phys_2bytes+1,
17686 (phys_bytes) 1);
17687 out_word(dep->de_data_port, *(u16_t *)two_bytes);
17688 count--;
17689 offset++;
17690 bytes--;
17691 phys_user++;
17692 odd_byte= 0;
17693 if (!bytes)
17694 continue;
17695 }
17696 ecount= bytes & ~1;
17697 if (ecount != 0)
17698 {
17699 port_write(dep->de_data_port, phys_user, ecount);
17700 count -= ecount;
17701 offset += ecount;
17702 bytes -= ecount;
17703 phys_user += ecount;
17704 }
17705 if (bytes)
17706 {
17707 assert(bytes == 1);
17708 phys_copy(phys_user, phys_2bytes, (phys_bytes) 1);
17709 count--;
17710 offset++;
17711 bytes--;
17712 phys_user++;
17713 odd_byte= 1;
17714 }
17715 }
17716 assert(count == 0);
17717
17718 if (odd_byte)
17719 out_word(dep->de_data_port, *(u16_t *)two_bytes);
17720
17721 for (i= 0; i<100; i++)
17722 {
17723 if (inb_reg0(dep, DP_ISR) & ISR_RDC)
17724 break;
17725 }
17726 if (i == 100)
17727 {
17728 panic("dp8390: remote dma failed to complete", NO_NUM);
17729 }
17730 }
17733 /*===========================================================================*
17734 * dp_nic2user *
17735 *===========================================================================*/
17736 static void dp_nic2user(dep, nic_addr, iovp, offset, count)
17737 dpeth_t *dep;
17738 int nic_addr;
17739 iovec_dat_t *iovp;
17740 vir_bytes offset;
17741 vir_bytes count;
17742 {
17743 phys_bytes phys_hw, phys_user;
17744 int bytes, i;
.Op 231 src/kernel/dp8390.c
17745
17746 phys_hw = dep->de_linmem + nic_addr;
17747
17748 i= 0;
17749 while (count > 0)
17750 {
17751 if (i >= IOVEC_NR)
17752 {
17753 dp_next_iovec(iovp);
17754 i= 0;
17755 continue;
17756 }
17757 assert(i < iovp->iod_iovec_s);
17758 if (offset >= iovp->iod_iovec[i].iov_size)
17759 {
17760 offset -= iovp->iod_iovec[i].iov_size;
17761 i++;
17762 continue;
17763 }
17764 bytes = iovp->iod_iovec[i].iov_size - offset;
17765 if (bytes > count)
17766 bytes = count;
17767
17768 phys_user = numap(iovp->iod_proc_nr,
17769 iovp->iod_iovec[i].iov_addr + offset, bytes);
17770 if (!phys_user)
17771 panic("dp8390: umap failedn", NO_NUM);
17772 phys_copy(phys_hw, phys_user, (phys_bytes) bytes);
17773 count -= bytes;
17774 phys_hw += bytes;
17775 offset += bytes;
17776 }
17777 assert(count == 0);
17778 }
17781 /*===========================================================================*
17782 * dp_pio8_nic2user *
17783 *===========================================================================*/
17784 static void dp_pio8_nic2user(dep, nic_addr, iovp, offset, count)
17785 dpeth_t *dep;
17786 int nic_addr;
17787 iovec_dat_t *iovp;
17788 vir_bytes offset;
17789 vir_bytes count;
17790 {
17791 phys_bytes phys_user;
17792 int bytes, i;
17793
17794 outb_reg0(dep, DP_RBCR0, count & 0xFF);
17795 outb_reg0(dep, DP_RBCR1, count >> 8);
17796 outb_reg0(dep, DP_RSAR0, nic_addr & 0xFF);
17797 outb_reg0(dep, DP_RSAR1, nic_addr >> 8);
17798 outb_reg0(dep, DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
17799
17800 i= 0;
17801 while (count > 0)
17802 {
17803 if (i >= IOVEC_NR)
17804 {
.Ep 232 src/kernel/dp8390.c
17805 dp_next_iovec(iovp);
17806 i= 0;
17807 continue;
17808 }
17809 assert(i < iovp->iod_iovec_s);
17810 if (offset >= iovp->iod_iovec[i].iov_size)
17811 {
17812 offset -= iovp->iod_iovec[i].iov_size;
17813 i++;
17814 continue;
17815 }
17816 bytes = iovp->iod_iovec[i].iov_size - offset;
17817 if (bytes > count)
17818 bytes = count;
17819
17820 phys_user = numap(iovp->iod_proc_nr,
17821 iovp->iod_iovec[i].iov_addr + offset, bytes);
17822 if (!phys_user)
17823 panic("dp8390: umap failedn", NO_NUM);
17824 port_read_byte(dep->de_data_port, phys_user, bytes);
17825 count -= bytes;
17826 offset += bytes;
17827 }
17828 assert(count == 0);
17829 }
17832 /*===========================================================================*
17833 * dp_pio16_nic2user *
17834 *===========================================================================*/
17835 static void dp_pio16_nic2user(dep, nic_addr, iovp, offset, count)
17836 dpeth_t *dep;
17837 int nic_addr;
17838 iovec_dat_t *iovp;
17839 vir_bytes offset;
17840 vir_bytes count;
17841 {
17842 phys_bytes phys_user;
17843 vir_bytes ecount;
17844 int bytes, i;
17845 u8_t two_bytes[2];
17846 phys_bytes phys_2bytes;
17847 int odd_byte;
17848
17849 ecount= (count+1) & ~1;
17850 phys_2bytes = vir2phys(two_bytes);
17851 odd_byte= 0;
17852
17853 outb_reg0(dep, DP_RBCR0, ecount & 0xFF);
17854 outb_reg0(dep, DP_RBCR1, ecount >> 8);
17855 outb_reg0(dep, DP_RSAR0, nic_addr & 0xFF);
17856 outb_reg0(dep, DP_RSAR1, nic_addr >> 8);
17857 outb_reg0(dep, DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
17858
17859 i= 0;
17860 while (count > 0)
17861 {
17862 if (i >= IOVEC_NR)
17863 {
17864 dp_next_iovec(iovp);
.Op 233 src/kernel/dp8390.c
17865 i= 0;
17866 continue;
17867 }
17868 assert(i < iovp->iod_iovec_s);
17869 if (offset >= iovp->iod_iovec[i].iov_size)
17870 {
17871 offset -= iovp->iod_iovec[i].iov_size;
17872 i++;
17873 continue;
17874 }
17875 bytes = iovp->iod_iovec[i].iov_size - offset;
17876 if (bytes > count)
17877 bytes = count;
17878
17879 phys_user = numap(iovp->iod_proc_nr,
17880 iovp->iod_iovec[i].iov_addr + offset, bytes);
17881 if (!phys_user)
17882 panic("dp8390: umap failedn", NO_NUM);
17883 if (odd_byte)
17884 {
17885 phys_copy(phys_2bytes+1, phys_user, (phys_bytes) 1);
17886 count--;
17887 offset++;
17888 bytes--;
17889 phys_user++;
17890 odd_byte= 0;
17891 if (!bytes)
17892 continue;
17893 }
17894 ecount= bytes & ~1;
17895 if (ecount != 0)
17896 {
17897 port_read(dep->de_data_port, phys_user, ecount);
17898 count -= ecount;
17899 offset += ecount;
17900 bytes -= ecount;
17901 phys_user += ecount;
17902 }
17903 if (bytes)
17904 {
17905 assert(bytes == 1);
17906 *(u16_t *)two_bytes= in_word(dep->de_data_port);
17907 phys_copy(phys_2bytes, phys_user, (phys_bytes) 1);
17908 count--;
17909 offset++;
17910 bytes--;
17911 phys_user++;
17912 odd_byte= 1;
17913 }
17914 }
17915 assert(count == 0);
17916 }
17919 /*===========================================================================*
17920 * dp_next_iovec *
17921 *===========================================================================*/
17922 static void dp_next_iovec(iovp)
17923 iovec_dat_t *iovp;
17924 {
.Ep 234 src/kernel/dp8390.c
17925 assert(iovp->iod_iovec_s > IOVEC_NR);
17926
17927 iovp->iod_iovec_s -= IOVEC_NR;
17928
17929 iovp->iod_iovec_addr += IOVEC_NR * sizeof(iovec_t);
17930
17931 get_userdata(iovp->iod_proc_nr, iovp->iod_iovec_addr,
17932 (iovp->iod_iovec_s > IOVEC_NR ? IOVEC_NR : iovp->iod_iovec_s) *
17933 sizeof(iovec_t), iovp->iod_iovec);
17934 }
17937 /*===========================================================================*
17938 * dp_handler *
17939 *===========================================================================*/
17940 static int dp_handler(irq)
17941 int irq;
17942 {
17943 /* DP8390 interrupt, send message and reenable interrupts. */
17944
17945 assert(irq >= 0 && irq < NR_IRQ_VECTORS);
17946 int_pending[irq]= 1;
17947 interrupt(dpeth_tasknr);
17948 return 1;
17949 }
17951 /*===========================================================================*
17952 * conf_hw *
17953 *===========================================================================*/
17954 static void conf_hw(dep)
17955 dpeth_t *dep;
17956 {
17957 static eth_stat_t empty_stat = {0, 0, 0, 0, 0, 0 /* ,... */ };
17958
17959 int ifnr;
17960 dp_conf_t *dcp;
17961
17962 dep->de_mode= DEM_DISABLED; /* Superfluous */
17963 ifnr= dep-de_table;
17964
17965 dcp= &dp_conf[ifnr];
17966 update_conf(dep, dcp);
17967 if (dep->de_mode != DEM_ENABLED)
17968 return;
17969 if (!wdeth_probe(dep) && !ne_probe(dep))
17970 {
17971 printf("dp8390: warning no ethernet card found at 0x%xn",
17972 dep->de_base_port);
17973 dep->de_mode= DEM_DISABLED;
17974 return;
17975 }
17976
17977 /* Allocate a memory segment, programmed I/O should set the
17978 * memory segment (linmem) to zero.
17979 */
17980 if (dep->de_linmem != 0)
17981 {
17982 if (protected_mode)
17983 {
17984 init_dataseg(&gdt[dcp->dpc_prot_sel / DESC_SIZE],
.Op 235 src/kernel/dp8390.c
17985 dep->de_linmem, dep->de_ramsize,
17986 TASK_PRIVILEGE);
17987 dep->de_memsegm= dcp->dpc_prot_sel;
17988 }
17989 else
17990 {
17991 dep->de_memsegm= physb_to_hclick(dep->de_linmem);
17992 }
17993 }
17994
17995 /* XXX */ if (dep->de_linmem == 0) dep->de_linmem= 0xFFFF0000;
17996
17997 dep->de_flags = DEF_EMPTY;
17998 dep->de_stat = empty_stat;
17999 }
18002 /*===========================================================================*
18003 * update_conf *
18004 *===========================================================================*/
18005 static void update_conf(dep, dcp)
18006 dpeth_t *dep;
18007 dp_conf_t *dcp;
18008 {
18009 long v;
18010 static char dpc_fmt[] = "x:d:x";
18011
18012 /* Get the default settings and modify them from the environment. */
18013 dep->de_mode= DEM_SINK;
18014 v= dcp->dpc_port;
18015 switch (env_parse(dcp->dpc_envvar, dpc_fmt, 0, &v, 0x000L, 0x3FFL)) {
18016 case EP_OFF:
18017 dep->de_mode= DEM_DISABLED;
18018 break;
18019 case EP_ON:
18020 case EP_SET:
18021 dep->de_mode= DEM_ENABLED; /* Might become disabled if
18022 * all probes fail */
18023 break;
18024 }
18025 dep->de_base_port= v;
18026
18027 v= dcp->dpc_irq | DEI_DEFAULT;
18028 (void) env_parse(dcp->dpc_envvar, dpc_fmt, 1, &v, 0L,
18029 (long) NR_IRQ_VECTORS - 1);
18030 dep->de_irq= v;
18031
18032 v= dcp->dpc_mem;
18033 (void) env_parse(dcp->dpc_envvar, dpc_fmt, 2, &v, 0L, LONG_MAX);
18034 dep->de_linmem= v;
18035 }
18038 /*===========================================================================*
18039 * calc_iovec_size *
18040 *===========================================================================*/
18041 static int calc_iovec_size(iovp)
18042 iovec_dat_t *iovp;
18043 {
18044 /* Calculate the size of a request. Note that the iovec_dat
.Ep 236 src/kernel/dp8390.c
18045 * structure will be unusable after calc_iovec_size.
18046 */
18047 int size;
18048 int i;
18049
18050 size= 0;
18051 i= 0;
18052 while (i < iovp->iod_iovec_s)
18053 {
18054 if (i >= IOVEC_NR)
18055 {
18056 dp_next_iovec(iovp);
18057 i= 0;
18058 continue;
18059 }
18060 size += iovp->iod_iovec[i].iov_size;
18061 i++;
18062 }
18063 return size;
18064 }
18067 /*===========================================================================*
18068 * reply *
18069 *===========================================================================*/
18070 static void reply(dep, err, may_block)
18071 dpeth_t *dep;
18072 int err;
18073 int may_block;
18074 {
18075 message reply;
18076 int status;
18077 int r;
18078
18079 status = 0;
18080 if (dep->de_flags & DEF_PACK_SEND)
18081 status |= DL_PACK_SEND;
18082 if (dep->de_flags & DEF_PACK_RECV)
18083 status |= DL_PACK_RECV;
18084
18085 reply.m_type = DL_TASK_REPLY;
18086 reply.DL_PORT = dep - de_table;
18087 reply.DL_PROC = dep->de_client;
18088 reply.DL_STAT = status | ((u32_t) err << 16);
18089 reply.DL_COUNT = dep->de_read_s;
18090 reply.DL_CLCK = get_uptime();
18091 r= send(dep->de_client, &reply);
18092 #if 0
18093 /* XXX What is the reason that this doesn't happen? */
18094 if (result == ELOCKED && may_block)
18095 return;
18096 #endif
18097 if (r < 0)
18098 panic("dp8390: send failed:", r);
18099
18100 dep->de_read_s = 0;
18101 dep->de_flags &= ~(DEF_PACK_SEND | DEF_PACK_RECV);
18102 }
.Op 237 src/kernel/dp8390.c
18105 /*===========================================================================*
18106 * mess_reply *
18107 *===========================================================================*/
18108 static void mess_reply(req, reply_mess)
18109 message *req;
18110 message *reply_mess;
18111 {
18112 if (send(req->m_source, reply_mess) != OK)
18113 panic("dp8390: unable to mess_reply", NO_NUM);
18114 }
18117 /*===========================================================================*
18118 * get_userdata *
18119 *===========================================================================*/
18120 static void get_userdata(user_proc, user_addr, count, loc_addr)
18121 int user_proc;
18122 vir_bytes user_addr;
18123 vir_bytes count;
18124 void *loc_addr;
18125 {
18126 phys_bytes src;
18127
18128 src = numap(user_proc, user_addr, count);
18129 if (!src)
18130 panic("dp8390: umap failed", NO_NUM);
18131
18132 phys_copy(src, vir2phys(loc_addr), (phys_bytes) count);
18133 }
18136 /*===========================================================================*
18137 * put_userdata *
18138 *===========================================================================*/
18139 static void put_userdata(user_proc, user_addr, count, loc_addr)
18140 int user_proc;
18141 vir_bytes user_addr;
18142 vir_bytes count;
18143 void *loc_addr;
18144 {
18145 phys_bytes dst;
18146
18147 dst = numap(user_proc, user_addr, count);
18148 if (!dst)
18149 panic("dp8390: umap failed", NO_NUM);
18150
18151 phys_copy(vir2phys(loc_addr), dst, (phys_bytes) count);
18152 }
18154 #endif /* ENABLE_NETWORKING */
18155
18156 /*
18157 * $PchHeader: /mount/hd2/minix/sys/kernel/ibm/RCS/dp8390.c,v 1.4 1995/06/13 08:10:42 philip Exp $
18158 */
.Ep 238 src/kernel/driver.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/driver.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
18200 /* This file contains device independent device driver interface.
18201 * Author: Kees J. Bot.
18202 *
18203 * The drivers support the following operations (using message format m2):
18204 *
18205 * m_type DEVICE PROC_NR COUNT POSITION ADRRESS
18206 * ----------------------------------------------------------------
18207 * | DEV_OPEN | device | proc nr | | | |
18208 * |------------+---------+---------+---------+---------+---------|
18209 * | DEV_CLOSE | device | proc nr | | | |
18210 * |------------+---------+---------+---------+---------+---------|
18211 * | DEV_READ | device | proc nr | bytes | offset | buf ptr |
18212 * |------------+---------+---------+---------+---------+---------|
18213 * | DEV_WRITE | device | proc nr | bytes | offset | buf ptr |
18214 * |------------+---------+---------+---------+---------+---------|
18215 * |SCATTERED_IO| device | proc nr | requests| | iov ptr |
18216 * ----------------------------------------------------------------
18217 * | DEV_IOCTL | device | proc nr |func code| | buf ptr |
18218 * ----------------------------------------------------------------
18219 *
18220 * The file contains one entry point:
18221 *
18222 * driver_task: called by the device dependent task entry
18223 *
18224 *
18225 * Constructed 92/04/02 by Kees J. Bot from the old AT wini and floppy driver.
18226 */
18227
18228 #include "kernel.h"
18229 #include <sys/ioctl.h>
18230 #include "driver.h"
18231
18232 #if (CHIP == INTEL)
18233 #if ENABLE_ADAPTEC_SCSI && DMA_BUF_SIZE < 2048
18234 /* A bit extra scratch for the Adaptec driver. */
18235 #define BUF_EXTRA (2048 - DMA_BUF_SIZE)
18236 #else
18237 #define BUF_EXTRA 0
18238 #endif
18239
18240 /* Claim space for variables. */
18241 PRIVATE u8_t buffer[(unsigned) 2 * DMA_BUF_SIZE + BUF_EXTRA];
18242 u8_t *tmp_buf; /* the DMA buffer eventually */
18243 phys_bytes tmp_phys; /* phys address of DMA buffer */
18244
18245 #else /* CHIP != INTEL */
18246
18247 /* Claim space for variables. */
18248 u8_t tmp_buf[DMA_BUF_SIZE]; /* the DMA buffer */
18249 phys_bytes tmp_phys; /* phys address of DMA buffer */
18250
18251 #endif /* CHIP != INTEL */
18252
18253 FORWARD _PROTOTYPE( void init_buffer, (void) );
18254
.Op 239 src/kernel/driver.c
18255
18256 /*===========================================================================*
18257 * driver_task *
18258 *===========================================================================*/
18259 PUBLIC void driver_task(dp)
18260 struct driver *dp; /* Device dependent entry points. */
18261 {
18262 /* Main program of any device driver task. */
18263
18264 int r, caller, proc_nr;
18265 message mess;
18266
18267 init_buffer(); /* Get a DMA buffer. */
18268
18269
18270 /* Here is the main loop of the disk task. It waits for a message, carries
18271 * it out, and sends a reply.
18272 */
18273
18274 while (TRUE) {
18275 /* First wait for a request to read or write a disk block. */
18276 receive(ANY, &mess);
18277
18278 caller = mess.m_source;
18279 proc_nr = mess.PROC_NR;
18280
18281 switch (caller) {
18282 case HARDWARE:
18283 /* Leftover interrupt. */
18284 continue;
18285 case FS_PROC_NR:
18286 /* The only legitimate caller. */
18287 break;
18288 default:
18289 printf("%s: got message from %dn", (*dp->dr_name)(), caller);
18290 continue;
18291 }
18292
18293 /* Now carry out the work. */
18294 switch(mess.m_type) {
18295 case DEV_OPEN: r = (*dp->dr_open)(dp, &mess); break;
18296 case DEV_CLOSE: r = (*dp->dr_close)(dp, &mess); break;
18297 case DEV_IOCTL: r = (*dp->dr_ioctl)(dp, &mess); break;
18298
18299 case DEV_READ:
18300 case DEV_WRITE: r = do_rdwt(dp, &mess); break;
18301
18302 case SCATTERED_IO: r = do_vrdwt(dp, &mess); break;
18303 default: r = EINVAL; break;
18304 }
18305
18306 /* Clean up leftover state. */
18307 (*dp->dr_cleanup)();
18308
18309 /* Finally, prepare and send the reply message. */
18310 mess.m_type = TASK_REPLY;
18311 mess.REP_PROC_NR = proc_nr;
18312
18313 mess.REP_STATUS = r; /* # of bytes transferred or error code */
18314 send(caller, &mess); /* send reply to caller */
.Ep 240 src/kernel/driver.c
18315 }
18316 }
18319 /*===========================================================================*
18320 * init_buffer *
18321 *===========================================================================*/
18322 PRIVATE void init_buffer()
18323 {
18324 /* Select a buffer that can safely be used for dma transfers. It may also
18325 * be used to read partition tables and such. Its absolute address is
18326 * 'tmp_phys', the normal address is 'tmp_buf'.
18327 */
18328
18329 #if (CHIP == INTEL)
18330 tmp_buf = buffer;
18331 tmp_phys = vir2phys(buffer);
18332
18333 if (tmp_phys == 0) panic("no DMA buffer", NO_NUM);
18334
18335 if (dma_bytes_left(tmp_phys) < DMA_BUF_SIZE) {
18336 /* First half of buffer crosses a 64K boundary, can't DMA into that */
18337 tmp_buf += DMA_BUF_SIZE;
18338 tmp_phys += DMA_BUF_SIZE;
18339 }
18340 #else /* CHIP != INTEL */
18341 tmp_phys = vir2phys(tmp_buf);
18342 #endif /* CHIP != INTEL */
18343 }
18346 /*===========================================================================*
18347 * do_rdwt *
18348 *===========================================================================*/
18349 PUBLIC int do_rdwt(dp, m_ptr)
18350 struct driver *dp; /* device dependent entry points */
18351 message *m_ptr; /* pointer to read or write message */
18352 {
18353 /* Carry out a single read or write request. */
18354 struct iorequest_s ioreq;
18355 int r;
18356
18357 if (m_ptr->COUNT <= 0) return(EINVAL);
18358
18359 if ((*dp->dr_prepare)(m_ptr->DEVICE) == NIL_DEV) return(ENXIO);
18360
18361 ioreq.io_request = m_ptr->m_type;
18362 ioreq.io_buf = m_ptr->ADDRESS;
18363 ioreq.io_position = m_ptr->POSITION;
18364 ioreq.io_nbytes = m_ptr->COUNT;
18365
18366 r = (*dp->dr_schedule)(m_ptr->PROC_NR, &ioreq);
18367
18368 if (r == OK) (void) (*dp->dr_finish)();
18369
18370 r = ioreq.io_nbytes;
18371 return(r < 0 ? r : m_ptr->COUNT - r);
18372 }
.Op 241 src/kernel/driver.c
18375 /*==========================================================================*
18376 * do_vrdwt *
18377 *==========================================================================*/
18378 PUBLIC int do_vrdwt(dp, m_ptr)
18379 struct driver *dp; /* device dependent entry points */
18380 message *m_ptr; /* pointer to read or write message */
18381 {
18382 /* Fetch a vector of i/o requests. Handle requests one at a time. Return
18383 * status in the vector.
18384 */
18385
18386 struct iorequest_s *iop;
18387 static struct iorequest_s iovec[NR_IOREQS];
18388 phys_bytes iovec_phys;
18389 unsigned nr_requests;
18390 int request;
18391 int r;
18392 phys_bytes user_iovec_phys;
18393
18394 nr_requests = m_ptr->COUNT;
18395
18396 if (nr_requests > sizeof iovec / sizeof iovec[0])
18397 panic("FS passed too big an I/O vector", nr_requests);
18398
18399 iovec_phys = vir2phys(iovec);
18400 user_iovec_phys = numap(m_ptr->PROC_NR, (vir_bytes) m_ptr->ADDRESS,
18401 (vir_bytes) (nr_requests * sizeof iovec[0]));
18402
18403 if (user_iovec_phys == 0)
18404 panic("FS passed a bad I/O vector", (int) m_ptr->ADDRESS);
18405
18406 phys_copy(user_iovec_phys, iovec_phys,
18407 (phys_bytes) nr_requests * sizeof iovec[0]);
18408
18409 if ((*dp->dr_prepare)(m_ptr->DEVICE) == NIL_DEV) return(ENXIO);
18410
18411 for (request = 0, iop = iovec; request < nr_requests; request++, iop++) {
18412 if ((r = (*dp->dr_schedule)(m_ptr->PROC_NR, iop)) != OK) break;
18413 }
18414
18415 if (r == OK) (void) (*dp->dr_finish)();
18416
18417 phys_copy(iovec_phys, user_iovec_phys,
18418 (phys_bytes) nr_requests * sizeof iovec[0]);
18419 return(OK);
18420 }
18423 /*===========================================================================*
18424 * no_name *
18425 *===========================================================================*/
18426 PUBLIC char *no_name()
18427 {
18428 /* If no specific name for the device. */
18429
18430 return(tasktab[proc_number(proc_ptr) + NR_TASKS].name);
18431 }
18434 /*============================================================================*
.Ep 242 src/kernel/driver.c
18435 * do_nop *
18436 *============================================================================*/
18437 PUBLIC int do_nop(dp, m_ptr)
18438 struct driver *dp;
18439 message *m_ptr;
18440 {
18441 /* Nothing there, or nothing to do. */
18442
18443 switch (m_ptr->m_type) {
18444 case DEV_OPEN: return(ENODEV);
18445 case DEV_CLOSE: return(OK);
18446 case DEV_IOCTL: return(ENOTTY);
18447 default: return(EIO);
18448 }
18449 }
18452 /*===========================================================================*
18453 * nop_finish *
18454 *===========================================================================*/
18455 PUBLIC int nop_finish()
18456 {
18457 /* Nothing to finish, all the work has been done by dp->dr_schedule. */
18458 return(OK);
18459 }
18462 /*===========================================================================*
18463 * nop_cleanup *
18464 *===========================================================================*/
18465 PUBLIC void nop_cleanup()
18466 {
18467 /* Nothing to clean up. */
18468 }
18471 /*===========================================================================*
18472 * clock_mess *
18473 *===========================================================================*/
18474 PUBLIC void clock_mess(ticks, func)
18475 int ticks; /* how many clock ticks to wait */
18476 watchdog_t func; /* function to call upon time out */
18477 {
18478 /* Send the clock task a message. */
18479
18480 message mess;
18481
18482 mess.m_type = SET_ALARM;
18483 mess.CLOCK_PROC_NR = proc_number(proc_ptr);
18484 mess.DELTA_TICKS = (long) ticks;
18485 mess.FUNC_TO_CALL = (sighandler_t) func;
18486 sendrec(CLOCK, &mess);
18487 }
18490 /*============================================================================*
18491 * do_diocntl *
18492 *============================================================================*/
18493 PUBLIC int do_diocntl(dp, m_ptr)
18494 struct driver *dp;
.Op 243 src/kernel/driver.c
18495 message *m_ptr; /* pointer to ioctl request */
18496 {
18497 /* Carry out a partition setting/getting request. */
18498 struct device *dv;
18499 phys_bytes user_phys, entry_phys;
18500 struct partition entry;
18501
18502 if (m_ptr->REQUEST != DIOCSETP && m_ptr->REQUEST != DIOCGETP) return(ENOTTY);
18503
18504 /* Decode the message parameters. */
18505 if ((dv = (*dp->dr_prepare)(m_ptr->DEVICE)) == NIL_DEV) return(ENXIO);
18506
18507 user_phys = numap(m_ptr->PROC_NR, (vir_bytes) m_ptr->ADDRESS, sizeof(entry));
18508 if (user_phys == 0) return(EFAULT);
18509
18510 entry_phys = vir2phys(&entry);
18511
18512 if (m_ptr->REQUEST == DIOCSETP) {
18513 /* Copy just this one partition table entry. */
18514 phys_copy(user_phys, entry_phys, (phys_bytes) sizeof(entry));
18515 dv->dv_base = entry.base;
18516 dv->dv_size = entry.size;
18517 } else {
18518 /* Return a partition table entry and the geometry of the drive. */
18519 entry.base = dv->dv_base;
18520 entry.size = dv->dv_size;
18521 (*dp->dr_geometry)(&entry);
18522 phys_copy(entry_phys, user_phys, (phys_bytes) sizeof(entry));
18523 }
18524 return(OK);
18525 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/drvlib.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
18600 /* IBM device driver utility functions. Author: Kees J. Bot
18601 * 7 Dec 1995
18602 * Entry point:
18603 * partition: partition a disk to the partition table(s) on it.
18604 */
18605
18606 #include "kernel.h"
18607 #include "driver.h"
18608 #include "drvlib.h"
18609
18610
18611 FORWARD _PROTOTYPE( void extpartition, (struct driver *dp, int extdev,
18612 unsigned long extbase) );
18613 FORWARD _PROTOTYPE( int get_part_table, (struct driver *dp, int device,
18614 unsigned long offset, struct part_entry *table) );
18615 FORWARD _PROTOTYPE( void sort, (struct part_entry *table) );
18616
18617
18618 /*============================================================================*
18619 * partition *
.Ep 244 src/kernel/drvlib.c
18620 *============================================================================*/
18621 PUBLIC void partition(dp, device, style)
18622 struct driver *dp; /* device dependent entry points */
18623 int device; /* device to partition */
18624 int style; /* partitioning style: floppy, primary, sub. */
18625 {
18626 /* This routine is called on first open to initialize the partition tables
18627 * of a device. It makes sure that each partition falls safely within the
18628 * device's limits. Depending on the partition style we are either making
18629 * floppy partitions, primary partitions or subpartitions. Only primary
18630 * partitions are sorted, because they are shared with other operating
18631 * systems that expect this.
18632 */
18633 struct part_entry table[NR_PARTITIONS], *pe;
18634 int disk, par;
18635 struct device *dv;
18636 unsigned long base, limit, part_limit;
18637
18638 /* Get the geometry of the device to partition */
18639 if ((dv = (*dp->dr_prepare)(device)) == NIL_DEV || dv->dv_size == 0) return;
18640 base = dv->dv_base >> SECTOR_SHIFT;
18641 limit = base + (dv->dv_size >> SECTOR_SHIFT);
18642
18643 /* Read the partition table for the device. */
18644 if (!get_part_table(dp, device, 0L, table)) return;
18645
18646 /* Compute the device number of the first partition. */
18647 switch (style) {
18648 case P_FLOPPY:
18649 device += MINOR_fd0a;
18650 break;
18651 case P_PRIMARY:
18652 sort(table); /* sort a primary partition table */
18653 device += 1;
18654 break;
18655 case P_SUB:
18656 disk = device / DEV_PER_DRIVE;
18657 par = device % DEV_PER_DRIVE - 1;
18658 device = MINOR_hd1a + (disk * NR_PARTITIONS + par) * NR_PARTITIONS;
18659 }
18660
18661 /* Find an array of devices. */
18662 if ((dv = (*dp->dr_prepare)(device)) == NIL_DEV) return;
18663
18664 /* Set the geometry of the partitions from the partition table. */
18665 for (par = 0; par < NR_PARTITIONS; par++, dv++) {
18666 /* Shrink the partition to fit within the device. */
18667 pe = &table[par];
18668 part_limit = pe->lowsec + pe->size;
18669 if (part_limit < pe->lowsec) part_limit = limit;
18670 if (part_limit > limit) part_limit = limit;
18671 if (pe->lowsec < base) pe->lowsec = base;
18672 if (part_limit < pe->lowsec) part_limit = pe->lowsec;
18673
18674 dv->dv_base = pe->lowsec << SECTOR_SHIFT;
18675 dv->dv_size = (part_limit - pe->lowsec) << SECTOR_SHIFT;
18676
18677 if (style == P_PRIMARY) {
18678 /* Each Minix primary partition can be subpartitioned. */
18679 if (pe->sysind == MINIX_PART)
.Op 245 src/kernel/drvlib.c
18680 partition(dp, device + par, P_SUB);
18681
18682 /* An extended partition has logical partitions. */
18683 if (pe->sysind == EXT_PART)
18684 extpartition(dp, device + par, pe->lowsec);
18685 }
18686 }
18687 }
18690 /*============================================================================*
18691 * extpartition *
18692 *============================================================================*/
18693 PRIVATE void extpartition(dp, extdev, extbase)
18694 struct driver *dp; /* device dependent entry points */
18695 int extdev; /* extended partition to scan */
18696 unsigned long extbase; /* sector offset of the base extended partition */
18697 {
18698 /* Extended partitions cannot be ignored alas, because people like to move
18699 * files to and from DOS partitions. Avoid reading this code, it's no fun.
18700 */
18701 struct part_entry table[NR_PARTITIONS], *pe;
18702 int subdev, disk, par;
18703 struct device *dv;
18704 unsigned long offset, nextoffset;
18705
18706 disk = extdev / DEV_PER_DRIVE;
18707 par = extdev % DEV_PER_DRIVE - 1;
18708 subdev = MINOR_hd1a + (disk * NR_PARTITIONS + par) * NR_PARTITIONS;
18709
18710 offset = 0;
18711 do {
18712 if (!get_part_table(dp, extdev, offset, table)) return;
18713 sort(table);
18714
18715 /* The table should contain one logical partition and optionally
18716 * another extended partition. (It's a linked list.)
18717 */
18718 nextoffset = 0;
18719 for (par = 0; par < NR_PARTITIONS; par++) {
18720 pe = &table[par];
18721 if (pe->sysind == EXT_PART) {
18722 nextoffset = pe->lowsec;
18723 } else
18724 if (pe->sysind != NO_PART) {
18725 if ((dv = (*dp->dr_prepare)(subdev)) == NIL_DEV) return;
18726
18727 dv->dv_base = (extbase + offset
18728 + pe->lowsec) << SECTOR_SHIFT;
18729 dv->dv_size = pe->size << SECTOR_SHIFT;
18730
18731 /* Out of devices? */
18732 if (++subdev % NR_PARTITIONS == 0) return;
18733 }
18734 }
18735 } while ((offset = nextoffset) != 0);
18736 }
18739 /*============================================================================*
.Ep 246 src/kernel/drvlib.c
18740 * get_part_table *
18741 *============================================================================*/
18742 PRIVATE int get_part_table(dp, device, offset, table)
18743 struct driver *dp;
18744 int device;
18745 unsigned long offset; /* sector offset to the table */
18746 struct part_entry *table; /* four entries */
18747 {
18748 /* Read the partition table for the device, return true iff there were no
18749 * errors.
18750 */