diff options
| -rw-r--r-- | sys/dev/pci/glxpcib.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sys/dev/pci/glxpcib.c b/sys/dev/pci/glxpcib.c index d55d0cadd87..5b93c115c99 100644 --- a/sys/dev/pci/glxpcib.c +++ b/sys/dev/pci/glxpcib.c @@ -1,4 +1,4 @@ -/* $OpenBSD: glxpcib.c,v 1.9 2013/01/16 07:17:59 pirofti Exp $ */ +/* $OpenBSD: glxpcib.c,v 1.10 2013/03/17 19:09:03 miod Exp $ */ /* * Copyright (c) 2007 Marc Balmer <mbalmer@openbsd.org> @@ -166,6 +166,15 @@ #define AMD5536_SMB_CTL2_FREQ 0x78 /* 100 kHz */ #define AMD5536_SMB_CTL3 0x06 /* control 3 */ +/* PMS */ +#define MSR_LBAR_PMS DIVIL_LBAR_PMS +#define MSR_PMS_SIZE 0x80 +#define MSR_PMS_ADDR_MASK 0xff80 +#define AMD5536_PMS_SSC 0x54 +#define AMD5536_PMS_SSC_PI 0x00040000 +#define AMD5536_PMS_SSC_CLR_PI 0x00020000 +#define AMD5536_PMS_SSC_SET_PI 0x00010000 + /* * MSR registers we want to preserve accross suspend/resume */ @@ -275,6 +284,7 @@ glxpcib_attach(struct device *parent, struct device *self, void *aux) u_int64_t sa; struct i2cbus_attach_args iba; int i2c = 0; + bus_space_handle_t tmpioh; #endif tc->tc_get_timecount = glxpcib_get_timecount; tc->tc_counter_mask = 0xffffffff; @@ -384,6 +394,18 @@ glxpcib_attach(struct device *parent, struct device *self, void *aux) iba.iba_tag = &sc->sc_smb_ic; i2c = 1; } + + /* Map PMS I/O space and enable the ``Power Immediate'' feature */ + sa = rdmsr(MSR_LBAR_PMS); + if (sa & MSR_LBAR_ENABLE && + !bus_space_map(pa->pa_iot, sa & MSR_PMS_ADDR_MASK, + MSR_PMS_SIZE, 0, &tmpioh)) { + bus_space_write_4(pa->pa_iot, tmpioh, AMD5536_PMS_SSC, + AMD5536_PMS_SSC_SET_PI); + bus_space_barrier(pa->pa_iot, tmpioh, AMD5536_PMS_SSC, 4, + BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); + bus_space_unmap(pa->pa_iot, tmpioh, MSR_PMS_SIZE); + } #endif /* SMALL_KERNEL */ pcibattach(parent, self, aux); |