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Code Issues Releases Activity

Simplify access to PCI config registers.

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This commit is contained in:
Doug Rabson 1998-07-16 13:38:35 +00:00
parent 4633bc16d2
commit 3a4215418c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=37710
1 changed files with 36 additions and 33 deletions
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69
sys/alpha/tlsb/dwlpx.c
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@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: dwlpx.c,v 1.2 1998/06/14 13:45:21 dfr Exp $
* $Id: dwlpx.c,v 1.3 1998/07/12 16:23:13 dfr Exp $
*/
#include "opt_simos.h"
@ -58,36 +58,42 @@ struct dwlpx_softc {
#define DWLPX_SOFTC(dev) (struct dwlpx_softc*) device_get_softc(dev)
#define SPARSE_READ(o) (*(u_int32_t*) (o))
#define SPARSE_WRITE(o, d) (*(u_int32_t*) (o) = (d))
#define SPARSE_READ(kv) (*(u_int32_t*) (kv))
#define SPARSE_WRITE(kv, d) (*(u_int32_t*) (kv) = (d))
#define SPARSE_BYTE_OFFSET(o) (((o) << 5) | ((o) & 3))
#define SPARSE_WORD_OFFSET(o) (((o) << 5) | ((o) & 2) | 0x8)
#define SPARSE_LONG_OFFSET(o) (((o) << 5) | 0x18)
#define SPARSE_BYTE_ADDRESS(base, o) ((base) + SPARSE_BYTE_OFFSET(o))
#define SPARSE_WORD_ADDRESS(base, o) ((base) + SPARSE_WORD_OFFSET(o))
#define SPARSE_LONG_ADDRESS(base, o) ((base) + SPARSE_LONG_OFFSET(o))
#define SPARSE_BYTE_EXTRACT(o, d) ((d) >> (8*((o) & 3)))
#define SPARSE_WORD_EXTRACT(o, d) ((d) >> (8*((o) & 2)))
#define SPARSE_LONG_EXTRACT(o, d) (d)
#define SPARSE_BYTE_INSERT(o, d) ((d) << (8*((o) & 3)))
#define SPARSE_WORD_INSERT(o, d) ((d) << (8*((o) & 2)))
#define SPARSE_LONG_INSERT(o, d) (d)
#define SPARSE_READ_BYTE(base, o) \
SPARSE_BYTE_EXTRACT(o, SPARSE_READ(base + SPARSE_BYTE_OFFSET(o)))
SPARSE_BYTE_EXTRACT(o, SPARSE_READ(SPARSE_BYTE_ADDRESS(base, o)))
#define SPARSE_READ_WORD(base, o) \
SPARSE_WORD_EXTRACT(o, SPARSE_READ(base + SPARSE_WORD_OFFSET(o)))
SPARSE_WORD_EXTRACT(o, SPARSE_READ(SPARSE_WORD_ADDRESS(base, o)))
#define SPARSE_READ_LONG(base, o) \
SPARSE_READ(base + SPARSE_LONG_OFFSET(o))
SPARSE_READ(SPARSE_LONG_ADDRESS(base, o))
#define SPARSE_WRITE_BYTE(base, o, d) \
SPARSE_WRITE(base + SPARSE_BYTE_OFFSET(o), SPARSE_BYTE_INSERT(o, d))
SPARSE_WRITE(SPARSE_BYTE_ADDRESS(base, o), SPARSE_BYTE_INSERT(o, d))
#define SPARSE_WRITE_WORD(base, o, d) \
SPARSE_WRITE(base + SPARSE_WORD_OFFSET(o), SPARSE_WORD_INSERT(o, d))
SPARSE_WRITE(SPARSE_WORD_ADDRESS(base, o), SPARSE_WORD_INSERT(o, d))
#define SPARSE_WRITE_LONG(base, o, d) \
SPARSE_WRITE(base + SPARSE_LONG_OFFSET(o), d)
SPARSE_WRITE(SPARSE_LONG_ADDRESS(base, o), d)
static alpha_chipset_inb_t dwlpx_inb;
static alpha_chipset_inw_t dwlpx_inw;
@ -149,6 +155,7 @@ static void
dwlpx_outb(u_int32_t port, u_int8_t data)
{
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0);
SPARSE_WRITE_BYTE(sc->io_base, port, data);
}
@ -177,58 +184,54 @@ dwlpx_maxdevs(u_int b)
#define DWLPX_CFGOFF(b, s, f, r) \
(((b) << 16) | ((s) << 11) | ((f) << 8) | (r))
#define CFGREAD(b, s, f, r, width) \
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0); \
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r); \
vm_offset_t kv = SPARSE_##width##_ADDRESS(sc->cfg_base, off); \
if (badaddr((caddr_t)kv, 4)) return ~0; \
return SPARSE_##width##_EXTRACT(off, SPARSE_READ(kv))
#define CFGWRITE(b, s, f, r, data, width) \
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0); \
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r); \
vm_offset_t kv = SPARSE_##width##_ADDRESS(sc->cfg_base, off); \
if (badaddr((caddr_t)kv, 4)) return; \
SPARSE_WRITE(kv, SPARSE_##width##_INSERT(off, data))
static u_int8_t
dwlpx_cfgreadb(u_int b, u_int s, u_int f, u_int r)
{
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0);
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg_base + off), 1)) return ~0;
return SPARSE_READ_BYTE(sc->cfg_base, off);
CFGREAD(b, s, f, r, BYTE);
}
static u_int16_t
dwlpx_cfgreadw(u_int b, u_int s, u_int f, u_int r)
{
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0);
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg_base + off), 2)) return ~0;
return SPARSE_READ_WORD(sc->cfg_base, off);
CFGREAD(b, s, f, r, WORD);
}
static u_int32_t
dwlpx_cfgreadl(u_int b, u_int s, u_int f, u_int r)
{
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0);
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg_base + off), 4)) return ~0;
return SPARSE_READ_LONG(sc->cfg_base, off);
CFGREAD(b, s, f, r, LONG);
}
static void
dwlpx_cfgwriteb(u_int b, u_int s, u_int f, u_int r, u_int8_t data)
{
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0);
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg_base + off), 1)) return;
SPARSE_WRITE_BYTE(sc->cfg_base, off, data);
CFGWRITE(b, s, f, r, data, BYTE);
}
static void
dwlpx_cfgwritew(u_int b, u_int s, u_int f, u_int r, u_int16_t data)
{
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0);
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg_base + off), 2)) return;
SPARSE_WRITE_WORD(sc->cfg_base, off, data);
CFGWRITE(b, s, f, r, data, WORD);
}
static void
dwlpx_cfgwritel(u_int b, u_int s, u_int f, u_int r, u_int32_t data)
{
struct dwlpx_softc* sc = DWLPX_SOFTC(dwlpx0);
vm_offset_t off = DWLPX_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg_base + off), 4)) return;
SPARSE_WRITE_LONG(sc->cfg_base, off, data);
CFGWRITE(b, s, f, r, data, LONG);
}
static int dwlpx_probe(device_t dev);