On Wed, Mar 06, 2019 at 09:50:27AM +0100, Cédric Le Goater wrote:
> Add a couple of XSCOM addresses controlling the power management
> states of the core.
>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>
> ---
> hw/ppc/pnv_core.c | 22 ++++++++++++++++++++--
> 1 file changed, 20 insertions(+), 2 deletions(-)
>
> diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c
> index 38179cdc53dc..c3d6350dc90a 100644
> --- a/hw/ppc/pnv_core.c
> +++ b/hw/ppc/pnv_core.c
> @@ -60,6 +60,12 @@ static void pnv_cpu_reset(void *opaque)
> #define PNV_XSCOM_EX_DTS_RESULT0 0x50000
> #define PNV_XSCOM_EX_DTS_RESULT1 0x50001
>
> +/*
> + * POWER9 core controls
> + */
> +#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
> +#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a
> +
> static uint64_t pnv_core_xscom_read(void *opaque, hwaddr addr,
> unsigned int width)
> {
> @@ -74,6 +80,10 @@ static uint64_t pnv_core_xscom_read(void *opaque, hwaddr addr,
> case PNV_XSCOM_EX_DTS_RESULT1:
> val = 0x24f000000000000ull;
> break;
Shouldn't this be in a p9 specific read/write routine?
> + case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
> + case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
> + val = 0x0;
> + break;
> default:
> qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
> addr);
> @@ -85,8 +95,16 @@ static uint64_t pnv_core_xscom_read(void *opaque, hwaddr addr,
> static void pnv_core_xscom_write(void *opaque, hwaddr addr, uint64_t val,
> unsigned int width)
> {
> - qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
> - addr);
> + uint32_t offset = addr >> 3;
> +
> + switch (offset) {
> + case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
> + case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
> + break;
> + default:
> + qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
> + addr);
> + }
> }
>
> static const MemoryRegionOps pnv_core_xscom_ops = {
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson