static int
imx6_ahci_attach(device_t dev)
{
struct ahci_controller* ctlr;
uint16_t pllstat;
uint32_t v;
int error, timeout;
ctlr = device_get_softc(dev);
/* Power up the controller and phy. */
error = imx6_ccm_sata_enable();
if (error != 0) {
device_printf(dev, "error enabling controller and phy\n");
return (error);
}
ctlr->vendorid = 0;
ctlr->deviceid = 0;
ctlr->subvendorid = 0;
ctlr->subdeviceid = 0;
ctlr->numirqs = 1;
ctlr->r_rid = 0;
if ((ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&ctlr->r_rid, RF_ACTIVE)) == NULL) {
return (ENXIO);
}
v = imx_iomux_gpr_get(IOMUX_GPR13);
/* Clear out existing values; these numbers are bitmasks. */
v &= ~(IOMUX_GPR13_SATA_PHY_8(7) |
IOMUX_GPR13_SATA_PHY_7(0x1f) |
IOMUX_GPR13_SATA_PHY_6(7) |
IOMUX_GPR13_SATA_SPEED(1) |
IOMUX_GPR13_SATA_PHY_5(1) |
IOMUX_GPR13_SATA_PHY_4(7) |
IOMUX_GPR13_SATA_PHY_3(0xf) |
IOMUX_GPR13_SATA_PHY_2(0x1f) |
IOMUX_GPR13_SATA_PHY_1(1) |
IOMUX_GPR13_SATA_PHY_0(1));
/* setting */
v |= IOMUX_GPR13_SATA_PHY_8(5) | /* Rx 3.0db */
IOMUX_GPR13_SATA_PHY_7(0x12) | /* Rx SATA2m */
IOMUX_GPR13_SATA_PHY_6(3) | /* Rx DPLL mode */
IOMUX_GPR13_SATA_SPEED(1) | /* 3.0GHz */
IOMUX_GPR13_SATA_PHY_5(0) | /* SpreadSpectram */
IOMUX_GPR13_SATA_PHY_4(4) | /* Tx Attenuation 9/16 */
IOMUX_GPR13_SATA_PHY_3(0) | /* Tx Boost 0db */
IOMUX_GPR13_SATA_PHY_2(0x11) | /* Tx Level 1.104V */
IOMUX_GPR13_SATA_PHY_1(1); /* PLL clock enable */
imx_iomux_gpr_set(IOMUX_GPR13, v);
/* phy reset */
error = imx6_ahci_phy_write(ctlr, SATA_PHY_CLOCK_RESET,
SATA_PHY_CLOCK_RESET_RST);
if (error != 0) {
device_printf(dev, "cannot reset PHY\n");
goto fail;
}
for (timeout = 50; timeout > 0; --timeout) {
DELAY(100);
error = imx6_ahci_phy_read(ctlr, SATA_PHY_LANE0_OUT_STAT,
&pllstat);
if (error != 0) {
device_printf(dev, "cannot read LANE0 status\n");
goto fail;
}
if (pllstat & SATA_PHY_LANE0_OUT_STAT_RX_PLL_STATE) {
break;
}
}
if (timeout <= 0) {
device_printf(dev, "time out reading LANE0 status\n");
error = ETIMEDOUT;
goto fail;
}
/* Support Staggered Spin-up */
v = ATA_INL(ctlr->r_mem, AHCI_CAP);
ATA_OUTL(ctlr->r_mem, AHCI_CAP, v | AHCI_CAP_SSS);
/* Ports Implemented. must set 1 */
v = ATA_INL(ctlr->r_mem, AHCI_PI);
ATA_OUTL(ctlr->r_mem, AHCI_PI, v | (1 << 0));
/* set 1ms-timer = AHB clock / 1000 */
ATA_OUTL(ctlr->r_mem, SATA_TIMER1MS,
imx_ccm_ahb_hz() / 1000);
/*
* Note: ahci_attach will release ctlr->r_mem on errors automatically
*/
return (ahci_attach(dev));
fail:
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
return (error);
}
static int
ixm6_ahcisata_init(struct imx_ahci_softc *sc)
{
uint32_t v;
int timeout;
/* AHCISATA clock enable */
v = imx6_ccm_read(CCM_CCGR5);
imx6_ccm_write(CCM_CCGR5, v | CCM_CCGR5_100M_CLK_ENABLE(3));
/* PLL power up */
if (imx6_pll_power(CCM_ANALOG_PLL_ENET, 1) != 0) {
aprint_error_dev(sc->sc_dev,
"couldn't enable CCM_ANALOG_PLL_ENET\n");
return -1;
}
v = imx6_ccm_read(CCM_ANALOG_PLL_ENET);
v |= CCM_ANALOG_PLL_ENET_ENABLE_100M;
imx6_ccm_write(CCM_ANALOG_PLL_ENET, v);
v = iomux_read(IOMUX_GPR13);
/* clear */
v &= ~(IOMUX_GPR13_SATA_PHY_8(7) |
IOMUX_GPR13_SATA_PHY_7(0x1f) |
IOMUX_GPR13_SATA_PHY_6(7) |
IOMUX_GPR13_SATA_SPEED(1) |
IOMUX_GPR13_SATA_PHY_5(1) |
IOMUX_GPR13_SATA_PHY_4(7) |
IOMUX_GPR13_SATA_PHY_3(0xf) |
IOMUX_GPR13_SATA_PHY_2(0x1f) |
IOMUX_GPR13_SATA_PHY_1(1) |
IOMUX_GPR13_SATA_PHY_0(1));
/* setting */
v |= IOMUX_GPR13_SATA_PHY_8(5) | /* Rx 3.0db */
IOMUX_GPR13_SATA_PHY_7(0x12) | /* Rx SATA2m */
IOMUX_GPR13_SATA_PHY_6(3) | /* Rx DPLL mode */
IOMUX_GPR13_SATA_SPEED(1) | /* 3.0GHz */
IOMUX_GPR13_SATA_PHY_5(0) | /* SpreadSpectram */
IOMUX_GPR13_SATA_PHY_4(4) | /* Tx Attenuation 9/16 */
IOMUX_GPR13_SATA_PHY_3(0) | /* Tx Boost 0db */
IOMUX_GPR13_SATA_PHY_2(0x11) | /* Tx Level 1.104V */
IOMUX_GPR13_SATA_PHY_1(1); /* PLL clock enable */
iomux_write(IOMUX_GPR13, v);
/* phy reset */
if (imx6_ahcisata_phy_write(sc, SATA_PHY_CLOCK_RESET,
SATA_PHY_CLOCK_RESET_RST) < 0) {
aprint_error_dev(sc->sc_dev, "cannot reset PHY\n");
return -1;
}
for (timeout = 50; timeout > 0; --timeout) {
delay(100);
v = imx6_ahcisata_phy_read(sc, SATA_PHY_LANE0_OUT_STAT);
if (v < 0) {
aprint_error_dev(sc->sc_dev,
"cannot read LANE0 status\n");
break;
}
if (v & SATA_PHY_LANE0_OUT_STAT_RX_PLL_STATE)
break;
}
if (timeout <= 0)
return -1;
/* Support Staggered Spin-up */
v = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SATA_CAP);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_CAP, v | SATA_CAP_SSS);
/* Ports Implmented. must set 1 */
v = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SATA_PI);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_PI, v | SATA_PI_PI);
/* set 1ms-timer = AHB clock / 1000 */
bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_TIMER1MS,
imx6_get_clock(IMX6CLK_AHB) / 1000);
return 0;
}