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Outsource setting the backplane window into a specific function so it

Browse Source 
can be called and reused in different places.

From OpenBSD.
This commit is contained in:
khorben 2018-03-11 00:17:28 +00:00
parent a8074f194a
commit 7b298995bd
1 changed files with 19 additions and 19 deletions
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38
sys/dev/sdmmc/if_bwfm_sdio.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_bwfm_sdio.c,v 1.1 2017/11/07 16:30:32 khorben Exp $ */
/* $NetBSD: if_bwfm_sdio.c,v 1.2 2018/03/11 00:17:28 khorben Exp $ */
/* $OpenBSD: if_bwfm_sdio.c,v 1.1 2017/10/11 17:19:50 patrick Exp $ */
/*
* Copyright (c) 2010-2016 Broadcom Corporation
@ -73,6 +73,7 @@ int bwfm_sdio_match(device_t, cfdata_t, void *);
void bwfm_sdio_attach(device_t, struct device *, void *);
int bwfm_sdio_detach(device_t, int);
void bwfm_sdio_backplane(struct bwfm_sdio_softc *, uint32_t);
uint8_t bwfm_sdio_read_1(struct bwfm_sdio_softc *, uint32_t);
uint32_t bwfm_sdio_read_4(struct bwfm_sdio_softc *, uint32_t);
void bwfm_sdio_write_1(struct bwfm_sdio_softc *, uint32_t,
@ -218,6 +219,21 @@ bwfm_sdio_detach(struct device *self, int flags)
return 0;
}
void
bwfm_sdio_backplane(struct bwfm_sdio_softc *sc, uint32_t bar0)
{
if (sc->sc_bar0 == bar0)
return;
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRLOW,
(bar0 >> 8) & 0x80);
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRMID,
(bar0 >> 16) & 0xff);
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRHIGH,
(bar0 >> 24) & 0xff);
sc->sc_bar0 = bar0;
}
uint8_t
bwfm_sdio_read_1(struct bwfm_sdio_softc *sc, uint32_t addr)
{
@ -246,15 +262,7 @@ bwfm_sdio_read_4(struct bwfm_sdio_softc *sc, uint32_t addr)
uint32_t bar0 = addr & ~BWFM_SDIO_SB_OFT_ADDR_MASK;
uint32_t rv;
if (sc->sc_bar0 != bar0) {
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRLOW,
(bar0 >> 8) & 0x80);
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRMID,
(bar0 >> 16) & 0xff);
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRHIGH,
(bar0 >> 24) & 0xff);
sc->sc_bar0 = bar0;
}
bwfm_sdio_backplane(sc, bar0);
addr &= BWFM_SDIO_SB_OFT_ADDR_MASK;
addr |= BWFM_SDIO_SB_ACCESS_2_4B_FLAG;
@ -299,15 +307,7 @@ bwfm_sdio_write_4(struct bwfm_sdio_softc *sc, uint32_t addr, uint32_t data)
struct sdmmc_function *sf;
uint32_t bar0 = addr & ~BWFM_SDIO_SB_OFT_ADDR_MASK;
if (sc->sc_bar0 != bar0) {
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRLOW,
(bar0 >> 8) & 0x80);
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRMID,
(bar0 >> 16) & 0xff);
bwfm_sdio_write_1(sc, BWFM_SDIO_FUNC1_SBADDRHIGH,
(bar0 >> 24) & 0xff);
sc->sc_bar0 = bar0;
}
bwfm_sdio_backplane(sc, bar0);
addr &= BWFM_SDIO_SB_OFT_ADDR_MASK;
addr |= BWFM_SDIO_SB_ACCESS_2_4B_FLAG;