On Thu, 23 Jun 2022 19:47:47 -0700
Dan Williams <dan.j.williams@xxxxxxxxx> wrote:
> For the x2 host-bridge interleave windows, allow for a
> x8-endpoint-interleave configuration per memory-type with each device
> contributing the minimum 256MB extent. Similarly, for the x1 host-bridge
> interleave windows, allow for a x4-endpoint-interleave configuration per
> memory-type.
>
> Bump up the number of decoders per-port to support hosting 8 regions.
>
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Hmm. I should get around to adding multiple decoders to the programmable
bits of the QEMU emulation to give us more flexibility. Mind you
volatile memory support would probably also be good ;)
Jonathan
> ---
> tools/testing/cxl/test/cxl.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/tools/testing/cxl/test/cxl.c b/tools/testing/cxl/test/cxl.c
> index b6e6bc02a507..599326796b83 100644
> --- a/tools/testing/cxl/test/cxl.c
> +++ b/tools/testing/cxl/test/cxl.c
> @@ -14,7 +14,7 @@
> #define NR_CXL_HOST_BRIDGES 2
> #define NR_CXL_ROOT_PORTS 2
> #define NR_CXL_SWITCH_PORTS 2
> -#define NR_CXL_PORT_DECODERS 2
> +#define NR_CXL_PORT_DECODERS 8
>
> static struct platform_device *cxl_acpi;
> static struct platform_device *cxl_host_bridge[NR_CXL_HOST_BRIDGES];
> @@ -118,7 +118,7 @@ static struct {
> .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
> ACPI_CEDT_CFMWS_RESTRICT_VOLATILE,
> .qtg_id = 0,
> - .window_size = SZ_256M,
> + .window_size = SZ_256M * 4UL,
> },
> .target = { 0 },
> },
> @@ -133,7 +133,7 @@ static struct {
> .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
> ACPI_CEDT_CFMWS_RESTRICT_VOLATILE,
> .qtg_id = 1,
> - .window_size = SZ_256M * 2,
> + .window_size = SZ_256M * 8UL,
> },
> .target = { 0, 1, },
> },
> @@ -148,7 +148,7 @@ static struct {
> .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
> ACPI_CEDT_CFMWS_RESTRICT_PMEM,
> .qtg_id = 2,
> - .window_size = SZ_256M,
> + .window_size = SZ_256M * 4UL,
> },
> .target = { 0 },
> },
> @@ -163,7 +163,7 @@ static struct {
> .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
> ACPI_CEDT_CFMWS_RESTRICT_PMEM,
> .qtg_id = 3,
> - .window_size = SZ_256M * 2,
> + .window_size = SZ_256M * 8UL,
> },
> .target = { 0, 1, },
> },
>
