diff options
Diffstat (limited to 'kernel/sys/pcl720.h')
| -rw-r--r-- | kernel/sys/pcl720.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/kernel/sys/pcl720.h b/kernel/sys/pcl720.h new file mode 100644 index 0000000..cf4eccd --- /dev/null +++ b/kernel/sys/pcl720.h @@ -0,0 +1,95 @@ +/* Copyright (c) 1995 Vixie Enterprises + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Vixie Enterprises not be used in advertising or publicity + * pertaining to distribution of the document or software without specific, + * written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND VIXIE ENTERPRISES DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VIXIE ENTERPRISES + * BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, + * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#ifndef _PCL720_DEFINED +#define _PCL720_DEFINED + +#define pcl720_data(base,bit) (base+(bit>>3)) +#define pcl720_data_0_7(base) (base+0) +#define pcl720_data_8_15(base) (base+1) +#define pcl720_data_16_23(base) (base+2) +#define pcl720_data_24_31(base) (base+3) +#define pcl720_cntr(base,cntr) (base+4+cntr) /* cntr: 0..2 */ +#define pcl720_cntr_0(base) (base+4) +#define pcl720_cntr_1(base) (base+5) +#define pcl720_cntr_2(base) (base+6) +#define pcl720_ctrl(base) (base+7) + +#ifndef DEBUG_PCL720 +#define pcl720_inb(x) inb(x) +#define pcl720_outb(x,y) outb(x,y) +#else +static unsigned char pcl720_inb(int addr) { + unsigned char x = inb(addr); + fprintf(DEBUG_PCL720, "inb(0x%x) -> 0x%x\n", addr, x); + return (x); +} +static void pcl720_outb(int addr, unsigned char x) { + outb(addr, x); + fprintf(DEBUG_PCL720, "outb(0x%x, 0x%x)\n", addr, x); +} +#endif + +#define pcl720_load(Base,Cntr,Mode,Val) \ + ({ register unsigned int b = Base, c = Cntr, v = Val; \ + i8253_ctrl ctrl; \ + \ + ctrl.s.bcd = i8253_binary; \ + ctrl.s.mode = Mode; \ + ctrl.s.rl = i8253_lmb; \ + ctrl.s.cntr = c; \ + pcl720_outb(pcl720_ctrl(b), ctrl.i); \ + pcl720_outb(pcl720_cntr(b,c), v); \ + pcl720_outb(pcl720_cntr(b,c), v >> 8); \ + v; \ + }) + +#define pcl720_read(Base,Cntr) \ + ({ register unsigned int b = Base, v; \ + i8253_ctrl ctrl; \ + \ + ctrl.s.rl = i8253_latch; \ + ctrl.s.cntr = i8253_cntr_0; \ + pcl720_outb(pcl720_ctrl(b), ctrl.i); \ + v = pcl720_inb(pcl720_cntr_0(b)); \ + v |= (pcl720_inb(pcl720_cntr_0(b)) << 8); \ + v; \ + }) + +#define pcl720_input(Base) \ + ({ register unsigned int b = Base, v; \ + \ + v = pcl720_inb(pcl720_data_0_7(b)); \ + v |= (pcl720_inb(pcl720_data_8_15(b)) << 8); \ + v |= (pcl720_inb(pcl720_data_16_23(b)) << 16); \ + v |= (pcl720_inb(pcl720_data_24_31(b)) << 24); \ + v; \ + }) + +#define pcl720_output(Base,Value) \ + ({ register unsigned int b = Base, v = Value; \ + \ + pcl720_outb(pcl720_data_0_7(b), v); \ + pcl720_outb(pcl720_data_8_15(b), v << 8); \ + pcl720_outb(pcl720_data_16_23(b), v << 16); \ + pcl720_outb(pcl720_data_24_31(b), v << 24); \ + v; \ + }) + +#endif /*_PCL720_DEFINED*/ |