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| author |   Christophe Lombard <clombard@linux.vnet.ibm.com> | 2016-03-04 12:26:37 +0100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2016-03-09 23:39:40 +1100 |
| commit | 4752876c71701b7663a5ded789058ab2c05f7d0f (patch) | |
| tree | 5f01e68b06a74c5c67013e8accd7deb4f49e4014 /drivers/misc/cxl/guest.c | |
| parent | cxl: Add guest-specific code (diff) | |
| download | linux-dev-4752876c71701b7663a5ded789058ab2c05f7d0f.tar.xz linux-dev-4752876c71701b7663a5ded789058ab2c05f7d0f.zip | |
cxl: sysfs support for guests
Filter out a few adapter parameters which don't make sense in a guest.
Document the changes.
Co-authored-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/cxl/guest.c')
| -rw-r--r-- | drivers/misc/cxl/guest.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c index d7d53d869283..b1b8ac5195e7 100644 --- a/drivers/misc/cxl/guest.c +++ b/drivers/misc/cxl/guest.c @@ -596,6 +596,30 @@ static int guest_afu_check_and_enable(struct cxl_afu *afu) return 0; } +static bool guest_support_attributes(const char *attr_name, + enum cxl_attrs type) +{ + switch (type) { + case CXL_ADAPTER_ATTRS: + if ((strcmp(attr_name, "base_image") == 0) || + (strcmp(attr_name, "load_image_on_perst") == 0) || + (strcmp(attr_name, "perst_reloads_same_image") == 0) || + (strcmp(attr_name, "image_loaded") == 0)) + return false; + break; + case CXL_AFU_MASTER_ATTRS: + if ((strcmp(attr_name, "pp_mmio_off") == 0)) + return false; + break; + case CXL_AFU_ATTRS: + break; + default: + break; + } + + return true; +} + static int activate_afu_directed(struct cxl_afu *afu) { int rc; @@ -936,6 +960,7 @@ const struct cxl_backend_ops cxl_guest_ops = { .ack_irq = guest_ack_irq, .attach_process = guest_attach_process, .detach_process = guest_detach_process, + .support_attributes = guest_support_attributes, .link_ok = guest_link_ok, .release_afu = guest_release_afu, .afu_read_err_buffer = guest_afu_read_err_buffer, |