diff options
| author | Frederic Barrat <fbarrat@linux.vnet.ibm.com> | 2016-03-04 12:26:28 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-03-09 13:05:43 +1100 |
| commit | 5be587b1110132b4f05e0bc3515a145365e910fe (patch) | |
| tree | 102af0ae101eef7c75f39bb696cda28ed45c8f65 /drivers/misc/cxl/pci.c | |
| parent | cca44c0192b03d179786ec34b070e7de42966cc6 (diff) | |
cxl: Introduce implementation-specific API
The backend API (in cxl.h) lists some low-level functions whose
implementation is different on bare-metal and in a guest. Each
environment implements its own functions, and the common code uses
them through function pointers, defined in cxl_backend_ops
Co-authored-by: Christophe Lombard <clombard@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/pci.c')
| -rw-r--r-- | drivers/misc/cxl/pci.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index c6279e5068b2..6e2c2748dd4f 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -646,7 +646,8 @@ static int cxl_read_afu_descriptor(struct cxl_afu *afu) static int cxl_afu_descriptor_looks_ok(struct cxl_afu *afu) { - int i; + int i, rc; + u32 val; if (afu->psa && afu->adapter->ps_size < (afu->pp_offset + afu->pp_size*afu->max_procs_virtualised)) { @@ -658,7 +659,8 @@ static int cxl_afu_descriptor_looks_ok(struct cxl_afu *afu) dev_warn(&afu->dev, "AFU uses < PAGE_SIZE per-process PSA!"); for (i = 0; i < afu->crs_num; i++) { - if ((cxl_afu_cr_read32(afu, i, 0) == 0)) { + rc = cxl_ops->afu_cr_read32(afu, i, 0, &val); + if (rc || val == 0) { dev_err(&afu->dev, "ABORTING: AFU configuration record %i is invalid\n", i); return -EINVAL; } @@ -679,7 +681,7 @@ static int sanitise_afu_regs(struct cxl_afu *afu) reg = cxl_p2n_read(afu, CXL_AFU_Cntl_An); if ((reg & CXL_AFU_Cntl_An_ES_MASK) != CXL_AFU_Cntl_An_ES_Disabled) { dev_warn(&afu->dev, "WARNING: AFU was not disabled: %#016llx\n", reg); - if (__cxl_afu_reset(afu)) + if (cxl_ops->afu_reset(afu)) return -EIO; if (cxl_afu_disable(afu)) return -EIO; @@ -775,7 +777,7 @@ static int cxl_configure_afu(struct cxl_afu *afu, struct cxl *adapter, struct pc goto err1; /* We need to reset the AFU before we can read the AFU descriptor */ - if ((rc = __cxl_afu_reset(afu))) + if ((rc = cxl_ops->afu_reset(afu))) goto err1; if (cxl_verbose) @@ -876,7 +878,7 @@ static void cxl_remove_afu(struct cxl_afu *afu) spin_unlock(&afu->adapter->afu_list_lock); cxl_context_detach_all(afu); - cxl_afu_deactivate_mode(afu); + cxl_ops->afu_deactivate_mode(afu, afu->current_mode); cxl_deconfigure_afu(afu); device_unregister(&afu->dev); @@ -1398,7 +1400,7 @@ static pci_ers_result_t cxl_pci_error_detected(struct pci_dev *pdev, return result; cxl_context_detach_all(afu); - cxl_afu_deactivate_mode(afu); + cxl_ops->afu_deactivate_mode(afu, afu->current_mode); cxl_deconfigure_afu(afu); } cxl_deconfigure_adapter(adapter); @@ -1445,7 +1447,7 @@ static pci_ers_result_t cxl_pci_slot_reset(struct pci_dev *pdev) afu_dev->dev.archdata.cxl_ctx = ctx; - if (cxl_afu_check_and_enable(afu)) + if (cxl_ops->afu_check_and_enable(afu)) goto err; afu_dev->error_state = pci_channel_io_normal; |