diff options
Diffstat (limited to 'sys/arm/mv/common.c')
| -rw-r--r-- | sys/arm/mv/common.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/sys/arm/mv/common.c b/sys/arm/mv/common.c index b2d13dd..d31e081 100644 --- a/sys/arm/mv/common.c +++ b/sys/arm/mv/common.c @@ -32,8 +32,10 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> +#include <sys/kernel.h> #include <machine/bus.h> @@ -62,6 +64,76 @@ static void decode_win_usb_dump(void); static uint32_t used_cpu_wins; +static __inline int +pm_is_disabled(uint32_t mask) +{ + + return (soc_power_ctrl_get(mask) == mask ? 0 : 1); +} + +static __inline uint32_t +obio_get_pm_mask(uint32_t base) +{ + struct obio_device *od; + + for (od = obio_devices; od->od_name != NULL; od++) + if (od->od_base == base) + return (od->od_pwr_mask); + + return (CPU_PM_CTRL_NONE); +} + +/* + * Disable device using power management register. + * 1 - Device Power On + * 0 - Device Power Off + * Mask can be set in loader. + * EXAMPLE: + * loader> set hw.pm-disable-mask=0x2 + * + * Common mask: + * |-------------------------------| + * | Device | Kirkwood | Discovery | + * |-------------------------------| + * | USB0 | 0x00008 | 0x020000 | + * |-------------------------------| + * | USB1 | - | 0x040000 | + * |-------------------------------| + * | USB2 | - | 0x080000 | + * |-------------------------------| + * | GE0 | 0x00001 | 0x000002 | + * |-------------------------------| + * | GE1 | - | 0x000004 | + * |-------------------------------| + * | IDMA | - | 0x100000 | + * |-------------------------------| + * | XOR | 0x10000 | 0x200000 | + * |-------------------------------| + * | CESA | 0x20000 | 0x400000 | + * |-------------------------------| + * | SATA | 0x04000 | 0x004000 | + * --------------------------------| + * This feature can be used only on Kirkwood and Discovery + * machines. + */ +static __inline void +pm_disable_device(int mask) +{ +#ifdef DIAGNOSTIC + uint32_t reg; + + reg = soc_power_ctrl_get(CPU_PM_CTRL_ALL); + printf("Power Management Register: 0%x\n", reg); + + reg &= ~mask; + soc_power_ctrl_set(reg); + printf("Device %x is disabled\n", mask); + + reg = soc_power_ctrl_get(CPU_PM_CTRL_ALL); + printf("Power Management Register: 0%x\n", reg); +#endif +} + uint32_t read_cpu_ctrl(uint32_t reg) { @@ -103,14 +175,36 @@ cpu_extra_feat(void) return (ef); } +/* + * Get the power status of device. This feature is only supported on + * Kirkwood and Discovery SoCs. + */ uint32_t soc_power_ctrl_get(uint32_t mask) { +#ifndef SOC_MV_ORION if (mask != CPU_PM_CTRL_NONE) mask &= read_cpu_ctrl(CPU_PM_CTRL); return (mask); +#else + return (mask); +#endif +} + +/* + * Set the power status of device. This feature is only supported on + * Kirkwood and Discovery SoCs. + */ +void +soc_power_ctrl_set(uint32_t mask) +{ + +#ifndef SOC_MV_ORION + if (mask != CPU_PM_CTRL_NONE) + write_cpu_ctrl(CPU_PM_CTRL, mask); +#endif } void @@ -191,6 +285,13 @@ int soc_decode_win(void) { uint32_t dev, rev; + int mask; + + mask = 0; + TUNABLE_INT_FETCH("hw.pm-disable-mask", &mask); + + if (mask != 0) + pm_disable_device(mask); /* Retrieve our ID: some windows facilities vary between SoC models */ soc_id(&dev, &rev); @@ -623,8 +724,12 @@ decode_win_usb_setup(void) /* Disable and clear all USB windows for all ports */ m = usb_max_ports(); + for (p = 0; p < m; p++) { + if (pm_is_disabled(CPU_PM_CTRL_USB(p))) + continue; + for (i = 0; i < MV_WIN_USB_MAX; i++) { win_usb_cr_write(i, p, 0); win_usb_br_write(i, p, 0); @@ -710,6 +815,9 @@ decode_win_eth_setup(uint32_t base) uint32_t br, sz; int i, j; + if (pm_is_disabled(obio_get_pm_mask(base))) + return; + /* Disable, clear and revoke protection for all ETH windows */ for (i = 0; i < MV_WIN_ETH_MAX; i++) { @@ -880,6 +988,8 @@ decode_win_idma_setup(void) uint32_t br, sz; int i, j; + if (pm_is_disabled(CPU_PM_CTRL_IDMA)) + return; /* * Disable and clear all IDMA windows, revoke protection for all channels */ @@ -1172,6 +1282,9 @@ decode_win_xor_setup(void) uint32_t br, sz; int i, j, z, e = 1, m, window; + if (pm_is_disabled(CPU_PM_CTRL_XOR)) + return; + /* * Disable and clear all XOR windows, revoke protection for all * channels @@ -1364,6 +1477,9 @@ decode_win_cesa_setup(void) uint32_t br, cr; int i, j; + if (pm_is_disabled(CPU_PM_CTRL_CRYPTO)) + return; + /* Disable and clear all CESA windows */ for (i = 0; i < MV_WIN_CESA_MAX; i++) { win_cesa_cr_write(i, 0); @@ -1432,6 +1548,9 @@ decode_win_sata_setup(void) uint32_t cr, br; int i, j; + if (pm_is_disabled(CPU_PM_CTRL_SATA)) + return; + for (i = 0; i < MV_WIN_SATA_MAX; i++) { win_sata_cr_write(i, 0); win_sata_br_write(i, 0); |
