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MFP4 223084, 227821:

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Partially implement generic_bs_*_8() for MIPS platforms.

This is known to work with TARGET_ARCH=mips64 with FreeBSD/BERI.
Assuming that other definitions in cpufunc.h are correct it will
work on non-o64 ABI systems except sibyte. On sibyte and o32 systems
generic_bs_*_8() will remain panic() implementations.

Sponsored by:	DARPA, AFRL
Reviewed by:	imp, jmallett (older versions)
This commit is contained in:
Brooks Davis 2013-04-22 19:02:37 +00:00
parent 03d48af292
commit 2d60c24f70
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=249776
2 changed files with 77 additions and 0 deletions
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6
sys/mips/include/cpufunc.h
View file

@ -354,9 +354,15 @@ void mips3_sd(volatile uint64_t *, uint64_t);
#define readb(va) (*(volatile uint8_t *) (va))
#define readw(va) (*(volatile uint16_t *) (va))
#define readl(va) (*(volatile uint32_t *) (va))
#if defined(__GNUC__) && !defined(__mips_o32)
#define readq(a) (*(volatile uint64_t *)(a))
#endif
#define writeb(va, d) (*(volatile uint8_t *) (va) = (d))
#define writew(va, d) (*(volatile uint16_t *) (va) = (d))
#define writel(va, d) (*(volatile uint32_t *) (va) = (d))
#if defined(__GNUC__) && !defined(__mips_o32)
#define writeq(va, d) (*(volatile uint64_t *) (va) = (d))
#endif
#endif /* !_MACHINE_CPUFUNC_H_ */

71
sys/mips/mips/bus_space_generic.c
View file

@ -202,9 +202,11 @@ static struct bus_space generic_space = {
#define rd8(a) cvmx_read64_uint8(a)
#define rd16(a) cvmx_read64_uint16(a)
#define rd32(a) cvmx_read64_uint32(a)
#define rd64(a) cvmx_read64_uint64(a)
#define wr8(a, v) cvmx_write64_uint8(a, v)
#define wr16(a, v) cvmx_write64_uint16(a, v)
#define wr32(a, v) cvmx_write64_uint32(a, v)
#define wr64(a, v) cvmx_write64_uint64(a, v)
#elif defined(CPU_SB1) && _BYTE_ORDER == _BIG_ENDIAN
#include <mips/sibyte/sb_bus_space.h>
#define rd8(a) sb_big_endian_read8(a)
@ -217,9 +219,15 @@ static struct bus_space generic_space = {
#define rd8(a) readb(a)
#define rd16(a) readw(a)
#define rd32(a) readl(a)
#ifdef readq
#define rd64(a) readq((a))
#endif
#define wr8(a, v) writeb(a, v)
#define wr16(a, v) writew(a, v)
#define wr32(a, v) writel(a, v)
#ifdef writeq
#define wr64(a, v) writeq(a, v)
#endif
#endif
/* generic bus_space tag */
@ -297,7 +305,11 @@ uint64_t
generic_bs_r_8(void *t, bus_space_handle_t handle, bus_size_t offset)
{
#ifdef rd64
return(rd64(handle + offset));
#else
panic("%s: not implemented", __func__);
#endif
}
void
@ -333,8 +345,14 @@ void
generic_bs_rm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
uint64_t *addr, size_t count)
{
#ifdef rd64
bus_addr_t baddr = bsh + offset;
while (count--)
*addr++ = rd64(baddr);
#else
panic("%s: not implemented", __func__);
#endif
}
/*
@ -382,8 +400,16 @@ void
generic_bs_rr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
uint64_t *addr, size_t count)
{
#ifdef rd64
bus_addr_t baddr = bsh + offset;
while (count--) {
*addr++ = rd64(baddr);
baddr += 8;
}
#else
panic("%s: not implemented", __func__);
#endif
}
/*
@ -419,7 +445,11 @@ generic_bs_w_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
uint64_t value)
{
#ifdef wr64
wr64(bsh + offset, value);
#else
panic("%s: not implemented", __func__);
#endif
}
/*
@ -460,8 +490,14 @@ void
generic_bs_wm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
const uint64_t *addr, size_t count)
{
#ifdef wr64
bus_addr_t baddr = bsh + offset;
while (count--)
wr64(baddr, *addr++);
#else
panic("%s: not implemented", __func__);
#endif
}
/*
@ -508,8 +544,16 @@ void
generic_bs_wr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
const uint64_t *addr, size_t count)
{
#ifdef wr64
bus_addr_t baddr = bsh + offset;
while (count--) {
wr64(baddr, *addr++);
baddr += 8;
}
#else
panic("%s: not implemented", __func__);
#endif
}
/*
@ -550,8 +594,14 @@ void
generic_bs_sm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
uint64_t value, size_t count)
{
#ifdef wr64
bus_addr_t addr = bsh + offset;
while (count--)
wr64(addr, value);
#else
panic("%s: not implemented", __func__);
#endif
}
/*
@ -592,8 +642,14 @@ void
generic_bs_sr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
uint64_t value, size_t count)
{
#ifdef wr64
bus_addr_t addr = bsh + offset;
for (; count != 0; count--, addr += 8)
wr64(addr, value);
#else
panic("%s: not implemented", __func__);
#endif
}
/*
@ -664,8 +720,23 @@ void
generic_bs_c_8(void *t, bus_space_handle_t bsh1, bus_size_t off1,
bus_space_handle_t bsh2, bus_size_t off2, size_t count)
{
#if defined(rd64) && defined(wr64)
bus_addr_t addr1 = bsh1 + off1;
bus_addr_t addr2 = bsh2 + off2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1 += 8, addr2 += 8)
wr64(addr2, rd64(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += 8 * (count - 1), addr2 += 8 * (count - 1);
count != 0; count--, addr1 -= 8, addr2 -= 8)
wr64(addr2, rd64(addr1));
}
#else
panic("%s: not implemented", __func__);
#endif
}
void