misc/cxl/vphb.c

31 	struct cxl_afu *afu;
35 	afu = (struct cxl_afu *)phb->private_data;
37 	if (!cxl_ops->link_ok(afu->adapter, afu)) {
53 	return (cxl_ops->afu_check_and_enable(afu) == 0);
87 static void cxl_afu_configured_put(struct cxl_afu *afu)
89 	atomic_dec_if_positive(&afu->configured_state);
92 static bool cxl_afu_configured_get(struct cxl_afu *afu)
94 	return atomic_inc_unless_negative(&afu->configured_state);
98 				       struct cxl_afu *afu, int *_record)
103 	if (record > afu->crs_num)
114 	struct cxl_afu *afu;
119 	afu = pci_bus_to_afu(bus);
120 	/* Grab a reader lock on afu. */
121 	if (afu == NULL || !cxl_afu_configured_get(afu))
124 	rc = cxl_pcie_config_info(bus, devfn, afu, &record);
130 		rc = cxl_ops->afu_cr_read8(afu, record, offset,	&val8);
134 		rc = cxl_ops->afu_cr_read16(afu, record, offset, &val16);
138 		rc = cxl_ops->afu_cr_read32(afu, record, offset, &val32);
146 	cxl_afu_configured_put(afu);
154 	struct cxl_afu *afu;
156 	afu = pci_bus_to_afu(bus);
157 	/* Grab a reader lock on afu. */
158 	if (afu == NULL || !cxl_afu_configured_get(afu))
161 	rc = cxl_pcie_config_info(bus, devfn, afu, &record);
167 		rc = cxl_ops->afu_cr_write8(afu, record, offset, val & 0xff);
170 		rc = cxl_ops->afu_cr_write16(afu, record, offset, val & 0xffff);
173 		rc = cxl_ops->afu_cr_write32(afu, record, offset, val);
180 	cxl_afu_configured_put(afu);
202 int cxl_pci_vphb_add(struct cxl_afu *afu)
216 	if (!afu->crs_num)
226 	parent = afu->adapter->dev.parent;
241 	phb->private_data = afu;
263 	afu->phb = phb;
268 void cxl_pci_vphb_remove(struct cxl_afu *afu)
273 	if (!afu || !afu->phb)
276 	phb = afu->phb;
277 	afu->phb = NULL;