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X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Nov 2023 17:26:39.7406 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: rgQHBQB2H50QUE9BuXuc6iXA+hw0RTVi+Tk6WG+Bof4sTAXqQkvmoIQ4F31g+nToG1rfrNRhh0ig40nTMl3eRg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR18MB4302 X-Proofpoint-ORIG-GUID: bQAsBHgtYaqB89RNLLSJAE1a5G1bCTRd X-Proofpoint-GUID: bQAsBHgtYaqB89RNLLSJAE1a5G1bCTRd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-03_16,2023-11-02_03,2023-05-22_02 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org > -----Original Message----- > From: Abdullah Sevincer > Sent: Friday, November 3, 2023 10:34 PM > To: dev@dpdk.org > Cc: Jerin Jacob Kollanukkaran ; > mike.ximing.chen@intel.com; bruce.richardson@intel.com; > thomas@monjalon.net; Abdullah Sevincer > Subject: [EXT] [PATCH v1] bus/pci: add function to enable/disable PASID >=20 > External Email >=20 > ---------------------------------------------------------------------- > This commit implements an internal api to enable and disable PASID for a > device e.g. DLB Device. >=20 > For kernels when PASID enabled by default it breaks DLB functionality, he= nce > disabling PASID is required for DLB to function properly. >=20 > PASID capability is not exposed to users hence offset can not be retrieve= d by > rte_pci_find_ext_capability() api. Therefore, api implemented in this com= mit > accepts an offset for PASID with an enable flag which is used to enable/d= isable > PASID. >=20 > Signed-off-by: Abdullah Sevincer > --- > +/** > + * Enable/Disable PASID. > + * > + * @param offset > + * Offset of the PASID external capability. > + * @param enable > + * Flag to enable or disable PASID. > + */ > +__rte_internal > +int rte_pci_set_pasid(const struct rte_pci_device *dev, off_t offset, > +bool enable); May be rte_pci_pasid_ena_dis(const struct rte_pci_device *dev, off_t offset= , bool enable) could be better name as it NOT setting the pasid > +#define RTE_PCI_PASID_CAP_OFFSET 0x148 /* PASID capability offs= et */ Is this fixed for all PCIe device? Offset will vary based on number of capa= bilities present in a given device, if so, move this to event/dlb.