d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Reimplement bs_be_rs_{1|2|4} and bs_le_rs_{1|2|4} by not

Browse Source 
calling the inline functions in <machine/pio.h> and do
not add synchronization. Implement bs_gen_barrier() as
eieio and sync.
This commit is contained in:
Marcel Moolenaar 2009-04-24 03:06:32 +00:00
parent c2085d04d3
commit 5a7189f8b9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=191447
1 changed files with 77 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
sys/powerpc/powerpc/bus_machdep.c
View File

@ -39,9 +39,13 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#define KTR_BE_IO 0
#define KTR_LE_IO 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/ktr.h>
#include <vm/vm.h>
#include <vm/pmap.h>
@ -141,7 +145,7 @@ static void
bs_gen_barrier(bus_space_handle_t bsh __unused, bus_size_t ofs __unused,
bus_size_t size __unused, int flags __unused)
{
__asm __volatile("" : : : "memory");
__asm __volatile("eieio; sync" : : : "memory");
}
/*
@ -150,19 +154,37 @@ bs_gen_barrier(bus_space_handle_t bsh __unused, bus_size_t ofs __unused,
static uint8_t
bs_be_rs_1(bus_space_handle_t bsh, bus_size_t ofs)
{
return (in8(__ppc_ba(bsh, ofs)));
volatile uint8_t *addr;
uint8_t res;
addr = __ppc_ba(bsh, ofs);
res = *addr;
CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
return (res);
}
static uint16_t
bs_be_rs_2(bus_space_handle_t bsh, bus_size_t ofs)
{
return (in16(__ppc_ba(bsh, ofs)));
volatile uint16_t *addr;
uint16_t res;
addr = __ppc_ba(bsh, ofs);
res = *addr;
CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
return (res);
}
static uint32_t
bs_be_rs_4(bus_space_handle_t bsh, bus_size_t ofs)
{
return (in32(__ppc_ba(bsh, ofs)));
volatile uint32_t *addr;
uint32_t res;
addr = __ppc_ba(bsh, ofs);
res = *addr;
CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
return (res);
}
static uint64_t
@ -234,19 +256,31 @@ bs_be_rr_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t *addr, size_t cnt)
static void
bs_be_ws_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val)
{
out8(__ppc_ba(bsh, ofs), val);
volatile uint8_t *addr;
addr = __ppc_ba(bsh, ofs);
*addr = val;
CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
}
static void
bs_be_ws_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val)
{
out16(__ppc_ba(bsh, ofs), val);
volatile uint16_t *addr;
addr = __ppc_ba(bsh, ofs);
*addr = val;
CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
}
static void
bs_be_ws_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val)
{
out32(__ppc_ba(bsh, ofs), val);
volatile uint32_t *addr;
addr = __ppc_ba(bsh, ofs);
*addr = val;
CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
}
static void
@ -401,19 +435,37 @@ bs_be_sr_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val, size_t cnt)
static uint8_t
bs_le_rs_1(bus_space_handle_t bsh, bus_size_t ofs)
{
return (in8(__ppc_ba(bsh, ofs)));
volatile uint8_t *addr;
uint8_t res;
addr = __ppc_ba(bsh, ofs);
res = *addr;
CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
return (res);
}
static uint16_t
bs_le_rs_2(bus_space_handle_t bsh, bus_size_t ofs)
{
return (in16rb(__ppc_ba(bsh, ofs)));
volatile uint16_t *addr;
uint16_t res;
addr = __ppc_ba(bsh, ofs);
__asm __volatile("lhbrx %0, 0, %1" : "=r"(res) : "r"(addr));
CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
return (res);
}
static uint32_t
bs_le_rs_4(bus_space_handle_t bsh, bus_size_t ofs)
{
return (in32rb(__ppc_ba(bsh, ofs)));
volatile uint32_t *addr;
uint32_t res;
addr = __ppc_ba(bsh, ofs);
__asm __volatile("lwbrx %0, 0, %1" : "=r"(res) : "r"(addr));
CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
return (res);
}
static uint64_t
@ -485,19 +537,31 @@ bs_le_rr_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t *addr, size_t cnt)
static void
bs_le_ws_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val)
{
out8(__ppc_ba(bsh, ofs), val);
volatile uint8_t *addr;
addr = __ppc_ba(bsh, ofs);
*addr = val;
CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
}
static void
bs_le_ws_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val)
{
out16rb(__ppc_ba(bsh, ofs), val);
volatile uint16_t *addr;
addr = __ppc_ba(bsh, ofs);
__asm __volatile("sthbrx %0, 0, %1" :: "r"(val), "r"(addr));
CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
}
static void
bs_le_ws_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val)
{
out32rb(__ppc_ba(bsh, ofs), val);
volatile uint32_t *addr;
addr = __ppc_ba(bsh, ofs);
__asm __volatile("stwbrx %0, 0, %1" :: "r"(val), "r"(addr));
CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
}
static void