diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/ioperm.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/alpha/ioperm.c | 194 |
1 files changed, 108 insertions, 86 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/ioperm.c b/sysdeps/unix/sysv/linux/alpha/ioperm.c index 924fc473b2..488265a069 100644 --- a/sysdeps/unix/sysv/linux/alpha/ioperm.c +++ b/sysdeps/unix/sysv/linux/alpha/ioperm.c @@ -1,36 +1,36 @@ -/* Copyright (C) 1992, 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. -Contributed by David Mosberger. +/* Copyright (C) 1992, 1996, 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David Mosberger. -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. -The GNU C Library is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -Library General Public License for more details. + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ /* I/O access is restricted to ISA port space (ports 0..65535). -Modern devices hopefully are sane enough not to put any performance -critical registers in i/o space. + Modern devices hopefully are sane enough not to put any performance + critical registers in i/o space. -On the first call to ioperm() or _sethae(), the entire (E)ISA port -space is mapped into the virtual address space at address io.base. -mprotect() calls are then used to enable/disable access to ports. Per -page, there are PAGE_SIZE>>IO_SHIFT I/O ports (e.g., 256 ports on a -Low Cost Alpha based system using 8KB pages). + On the first call to ioperm() or _sethae(), the entire (E)ISA port + space is mapped into the virtual address space at address io.base. + mprotect() calls are then used to enable/disable access to ports. Per + page, there are PAGE_SIZE>>IO_SHIFT I/O ports (e.g., 256 ports on a + Low Cost Alpha based system using 8KB pages). -Keep in mind that this code should be able to run in a 32bit address -space. It is therefore unreasonable to expect mmap'ing the entire -sparse address space would work (e.g., the Low Cost Alpha chip has an -I/O address space that's 512MB large!). */ + Keep in mind that this code should be able to run in a 32bit address + space. It is therefore unreasonable to expect mmap'ing the entire + sparse address space would work (e.g., the Low Cost Alpha chip has an + I/O address space that's 512MB large!). */ #include <errno.h> #include <fcntl.h> @@ -66,27 +66,30 @@ I/O address space that's 512MB large!). */ #define CIA_SPARSE_MEM (0xfffffc8000000000UL) #define CIA_DENSE_MEM (0xfffffc8600000000UL) +#define T2_IO_BASE (0xfffffc03a0000000UL) +#define T2_SPARSE_BASE (0xfffffc0200000000UL) +#define T2_DENSE_BASE (0xfffffc03c0000000UL) -enum { - IOSYS_JENSEN = 0, IOSYS_APECS = 1, IOSYS_CIA = 2 +typedef enum { + IOSYS_UNKNOWN, IOSYS_JENSEN, IOSYS_APECS, IOSYS_CIA, IOSYS_T2 } iosys_t; struct ioswtch { - void (*sethae)(unsigned long addr); - void (*outb)(unsigned char b, unsigned long port); - void (*outw)(unsigned short b, unsigned long port); - void (*outl)(unsigned int b, unsigned long port); - unsigned int (*inb)(unsigned long port); - unsigned int (*inw)(unsigned long port); - unsigned int (*inl)(unsigned long port); + void (*sethae)(unsigned long int addr); + void (*outb)(unsigned char b, unsigned long int port); + void (*outw)(unsigned short b, unsigned long int port); + void (*outl)(unsigned int b, unsigned long int port); + unsigned int (*inb)(unsigned long int port); + unsigned int (*inw)(unsigned long int port); + unsigned int (*inl)(unsigned long int port); }; static struct platform { - const char *name; - int io_sys; - int hae_shift; - unsigned long bus_memory_base; - unsigned long sparse_bus_memory_base; + const char *name; + int io_sys; + iosys_t hae_shift; + unsigned long int bus_memory_base; + unsigned long int sparse_bus_memory_base; } platform[] = { {"Alcor", IOSYS_CIA, 5, CIA_DENSE_MEM, CIA_SPARSE_MEM}, {"Avanti", IOSYS_APECS, 5, APECS_DENSE_MEM, APECS_SPARSE_MEM}, @@ -99,27 +102,29 @@ static struct platform { {"Mikasa", IOSYS_APECS, 5, APECS_DENSE_MEM, APECS_SPARSE_MEM}, {"Mustang", IOSYS_APECS, 5, APECS_DENSE_MEM, APECS_SPARSE_MEM}, {"Noname", IOSYS_APECS, 5, APECS_DENSE_MEM, APECS_SPARSE_MEM}, + {"Sable", IOSYS_T2, 5, T2_DENSE_MEM, T2_SPARSE_MEM}, }; static struct { struct hae { - unsigned long cache; - unsigned long * reg; + unsigned long int cache; + unsigned long int * reg; } hae; - unsigned long base; + unsigned long int base; struct ioswtch * swp; - int sys; + unsigned long int bus_memory_base; + unsigned long int sparse_bus_memory_base; + unsigned long int io_base; + iosys_t sys; int hae_shift; - unsigned long bus_memory_base; - unsigned long sparse_bus_memory_base; } io; -extern void __sethae (unsigned long); /* we can't use asm/io.h */ +extern void __sethae (unsigned long int); /* we can't use asm/io.h */ -static inline unsigned long -port_to_cpu_addr (unsigned long port, int iosys, int size) +static inline unsigned long int +port_to_cpu_addr (unsigned long int port, iosys_t iosys, int size) { if (iosys == IOSYS_JENSEN) return (port << 7) + ((size - 1) << 5) + io.base; @@ -129,7 +134,7 @@ port_to_cpu_addr (unsigned long port, int iosys, int size) static inline void -inline_sethae (unsigned long addr, int iosys) +inline_sethae (unsigned long int addr, iosys_t iosys) { if (iosys == IOSYS_JENSEN) { @@ -143,7 +148,7 @@ inline_sethae (unsigned long addr, int iosys) } else { - unsigned long msb; + unsigned long int msb; /* no need to set hae if msb is 0: */ msb = addr & 0xf8000000; @@ -157,10 +162,10 @@ inline_sethae (unsigned long addr, int iosys) static inline void -inline_outb (unsigned char b, unsigned long port, int iosys) +inline_outb (unsigned char b, unsigned long int port, iosys_t iosys) { unsigned int w; - unsigned long addr = port_to_cpu_addr (port, iosys, 1); + unsigned long int addr = port_to_cpu_addr (port, iosys, 1); inline_sethae (0, iosys); asm ("insbl %2,%1,%0" : "r=" (w) : "ri" (port & 0x3), "r" (b)); @@ -170,10 +175,10 @@ inline_outb (unsigned char b, unsigned long port, int iosys) static inline void -inline_outw (unsigned short b, unsigned long port, int iosys) +inline_outw (unsigned short int b, unsigned long int port, iosys_t iosys) { unsigned int w; - unsigned long addr = port_to_cpu_addr (port, iosys, 2); + unsigned long int addr = port_to_cpu_addr (port, iosys, 2); inline_sethae (0, iosys); asm ("inswl %2,%1,%0" : "r=" (w) : "ri" (port & 0x3), "r" (b)); @@ -183,9 +188,9 @@ inline_outw (unsigned short b, unsigned long port, int iosys) static inline void -inline_outl (unsigned int b, unsigned long port, int iosys) +inline_outl (unsigned int b, unsigned long int port, iosys_t iosys) { - unsigned long addr = port_to_cpu_addr (port, iosys, 4); + unsigned long int addr = port_to_cpu_addr (port, iosys, 4); if (port >= MAX_PORT) return; @@ -197,9 +202,9 @@ inline_outl (unsigned int b, unsigned long port, int iosys) static inline unsigned int -inline_inb (unsigned long port, int iosys) +inline_inb (unsigned long int port, iosys_t iosys) { - unsigned long result, addr = port_to_cpu_addr (port, iosys, 1); + unsigned long int result, addr = port_to_cpu_addr (port, iosys, 1); inline_sethae (0, iosys); result = *(vuip) addr; @@ -209,9 +214,9 @@ inline_inb (unsigned long port, int iosys) static inline unsigned int -inline_inw (unsigned long port, int iosys) +inline_inw (unsigned long int port, iosys_t iosys) { - unsigned long result, addr = port_to_cpu_addr (port, iosys, 2); + unsigned long int result, addr = port_to_cpu_addr (port, iosys, 2); inline_sethae (0, iosys); result = *(vuip) addr; @@ -221,9 +226,9 @@ inline_inw (unsigned long port, int iosys) static inline unsigned int -inline_inl (unsigned long port, int iosys) +inline_inl (unsigned long int port, iosys_t iosys) { - unsigned long addr = port_to_cpu_addr (port, iosys, 4); + unsigned long int addr = port_to_cpu_addr (port, iosys, 4); inline_sethae (0, iosys); return *(vuip) addr; @@ -232,14 +237,14 @@ inline_inl (unsigned long port, int iosys) #define DCL_SETHAE(name, iosys) \ static void \ -name##_sethae (unsigned long addr) \ +name##_sethae (unsigned long int addr) \ { \ inline_sethae (addr, IOSYS_##iosys); \ } #define DCL_OUT(name, func, type, iosys) \ static void \ -name##_##func (unsigned type b, unsigned long addr) \ +name##_##func (unsigned type b, unsigned long int addr) \ { \ inline_##func (b, addr, IOSYS_##iosys); \ } @@ -247,7 +252,7 @@ name##_##func (unsigned type b, unsigned long addr) \ #define DCL_IN(name, func, iosys) \ static unsigned int \ -name##_##func (unsigned long addr) \ +name##_##func (unsigned long int addr) \ { \ return inline_##func (addr, IOSYS_##iosys); \ } @@ -255,7 +260,7 @@ name##_##func (unsigned long addr) \ DCL_SETHAE(jensen, JENSEN) DCL_OUT(jensen, outb, char, JENSEN) -DCL_OUT(jensen, outw, short, JENSEN) +DCL_OUT(jensen, outw, short int, JENSEN) DCL_OUT(jensen, outl, int, JENSEN) DCL_IN(jensen, inb, JENSEN) DCL_IN(jensen, inw, JENSEN) @@ -266,7 +271,7 @@ DCL_IN(jensen, inl, JENSEN) DCL_SETHAE(apecs, APECS) DCL_OUT(apecs, outb, char, APECS) -DCL_OUT(apecs, outw, short, APECS) +DCL_OUT(apecs, outw, short int, APECS) DCL_OUT(apecs, outl, int, APECS) DCL_IN(apecs, inb, APECS) DCL_IN(apecs, inw, APECS) @@ -291,6 +296,10 @@ struct ioswtch ioswtch[] = { * with, we first try to read the value of symlink PATH_ALPHA_SYSTYPE, * if that fails, we lookup the "system type" field in /proc/cpuinfo. * If that fails as well, we give up. + * + * If the value received from PATH_ALPHA_SYSTYPE begins with a number, + * assume this is a previously unsupported system and the values encode, + * in order, "<io_base>,<hae_shift>,<dense_base>,<sparse_base>". */ static int init_iosys (void) @@ -298,10 +307,21 @@ init_iosys (void) char systype[256]; int i, n; - n = readlink(PATH_ALPHA_SYSTYPE, systype, sizeof(systype) - 1); + n = readlink (PATH_ALPHA_SYSTYPE, systype, sizeof (systype) - 1); if (n > 0) { systype[n] = '\0'; + if (isdigit (systype[0])) + { + if (sscanf (systype, "%li,%i,%li,%li", &io.io_base, &io.hae_shift, + &io.bus_memory_base, &io.sparse_bus_memory_base) == 4) + { + io.sys = IOSYS_UNKNOWN; + io.swp = &ioswtch[1]; + return 0; + } + /* else we're likely going to fail with the system match below */ + } } else { @@ -318,14 +338,14 @@ init_iosys (void) else fgets (systype, 256, fp); } - fclose(fp); + fclose (fp); if (n == EOF) { /* this can happen if the format of /proc/cpuinfo changes... */ - fprintf(stderr, - "ioperm.init_iosys(): Unable to determine system type.\n" - "\t(May need " PATH_ALPHA_SYSTYPE " symlink?)\n"); + fprintf (stderr, + "ioperm.init_iosys(): Unable to determine system type.\n" + "\t(May need " PATH_ALPHA_SYSTYPE " symlink?)\n"); __set_errno (ENODEV); return -1; } @@ -355,9 +375,9 @@ init_iosys (void) int -_ioperm (unsigned long from, unsigned long num, int turn_on) +_ioperm (unsigned long int from, unsigned long int num, int turn_on) { - unsigned long addr, len; + unsigned long int addr, len; int prot; if (!io.swp && init_iosys () < 0) @@ -374,7 +394,7 @@ _ioperm (unsigned long from, unsigned long num, int turn_on) { if (!io.base) { - unsigned long base; + unsigned long int base; int fd; io.hae.reg = 0; /* not used in user-level */ @@ -387,6 +407,7 @@ _ioperm (unsigned long from, unsigned long num, int turn_on) switch (io.sys) { + case IOSYS_UNKNOWN: base = io.io_base; break; case IOSYS_JENSEN: base = JENSEN_IO_BASE; break; case IOSYS_APECS: base = APECS_IO_BASE; break; case IOSYS_CIA: base = CIA_IO_BASE; break; @@ -398,7 +419,8 @@ _ioperm (unsigned long from, unsigned long num, int turn_on) addr &= PAGE_MASK; len = port_to_cpu_addr (MAX_PORT, io.sys, 1) - addr; io.base = - (unsigned long) __mmap (0, len, PROT_NONE, MAP_SHARED, fd, base); + (unsigned long int) __mmap (0, len, PROT_NONE, MAP_SHARED, + fd, base); close (fd); if ((long) io.base == -1) return -1; @@ -437,7 +459,7 @@ _iopl (unsigned int level) void -_sethae (unsigned long addr) +_sethae (unsigned long int addr) { if (!io.swp && init_iosys () < 0) return; @@ -447,7 +469,7 @@ _sethae (unsigned long addr) void -_outb (unsigned char b, unsigned long port) +_outb (unsigned char b, unsigned long int port) { if (port >= MAX_PORT) return; @@ -457,7 +479,7 @@ _outb (unsigned char b, unsigned long port) void -_outw (unsigned short b, unsigned long port) +_outw (unsigned short b, unsigned long int port) { if (port >= MAX_PORT) return; @@ -467,7 +489,7 @@ _outw (unsigned short b, unsigned long port) void -_outl (unsigned int b, unsigned long port) +_outl (unsigned int b, unsigned long int port) { if (port >= MAX_PORT) return; @@ -477,27 +499,27 @@ _outl (unsigned int b, unsigned long port) unsigned int -_inb (unsigned long port) +_inb (unsigned long int port) { return io.swp->inb (port); } unsigned int -_inw (unsigned long port) +_inw (unsigned long int port) { return io.swp->inw (port); } unsigned int -_inl (unsigned long port) +_inl (unsigned long int port) { return io.swp->inl (port); } -unsigned long +unsigned long int _bus_base(void) { if (!io.swp && init_iosys () < 0) @@ -505,7 +527,7 @@ _bus_base(void) return io.bus_memory_base; } -unsigned long +unsigned long int _bus_base_sparse(void) { if (!io.swp && init_iosys () < 0) |