1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/device.h>
20 #define VALID_MSIX_IDX(attr, msix_index) ((msix_index) < (attr)->num_irqs)
27  * hinic_msix_attr_set - set message attribute for msix entry
28  * @hwif: the HW interface of a pci function device
36  * Return 0 - Success, negative - Failure
43 	u32 msix_ctrl, addr;  in hinic_msix_attr_set()  local
45 	if (!VALID_MSIX_IDX(&hwif->attr, msix_index))  in hinic_msix_attr_set()
46 		return -EINVAL;  in hinic_msix_attr_set()
54 	addr = HINIC_CSR_MSIX_CTRL_ADDR(msix_index);  in hinic_msix_attr_set()
56 	hinic_hwif_write_reg(hwif, addr, msix_ctrl);  in hinic_msix_attr_set()
61  * hinic_msix_attr_cnt_clear - clear message attribute counters for msix entry
62  * @hwif: the HW interface of a pci function device
65  * Return 0 - Success, negative - Failure
69 	u32 msix_ctrl, addr;  in hinic_msix_attr_cnt_clear()  local
71 	if (!VALID_MSIX_IDX(&hwif->attr, msix_index))  in hinic_msix_attr_cnt_clear()
72 		return -EINVAL;  in hinic_msix_attr_cnt_clear()
75 	addr = HINIC_CSR_MSIX_CNT_ADDR(msix_index);  in hinic_msix_attr_cnt_clear()
77 	hinic_hwif_write_reg(hwif, addr, msix_ctrl);  in hinic_msix_attr_cnt_clear()
82  * hinic_set_pf_action - set action on pf channel
83  * @hwif: the HW interface of a pci function device
143 	mask_bits = readl(hwif->intr_regs_base + offset);  in hinic_set_msix_state()
149 	writel(mask_bits, hwif->intr_regs_base + offset);  in hinic_set_msix_state()
153  * hwif_ready - test if the HW is ready for use
154  * @hwif: the HW interface of a pci function device
156  * Return 0 - Success, negative - Failure
160 	u32 addr, attr1;  in hwif_ready()  local
162 	addr   = HINIC_CSR_FUNC_ATTR1_ADDR;  in hwif_ready()
163 	attr1  = hinic_hwif_read_reg(hwif, addr);  in hwif_ready()
166 		return -EBUSY;  in hwif_ready()
170 			return -EBUSY;  in hwif_ready()
188 	dev_err(&hwif->pdev->dev, "Wait for hwif timeout\n");  in wait_hwif_ready()
190 	return -EBUSY;  in wait_hwif_ready()
194  * set_hwif_attr - set the attributes in the relevant members in hwif
195  * @hwif: the HW interface of a pci function device
203 	hwif->attr.func_idx     = HINIC_FA0_GET(attr0, FUNC_IDX);  in set_hwif_attr()
204 	hwif->attr.pf_idx       = HINIC_FA0_GET(attr0, PF_IDX);  in set_hwif_attr()
205 	hwif->attr.pci_intf_idx = HINIC_FA0_GET(attr0, PCI_INTF_IDX);  in set_hwif_attr()
206 	hwif->attr.func_type    = HINIC_FA0_GET(attr0, FUNC_TYPE);  in set_hwif_attr()
208 	hwif->attr.num_aeqs = BIT(HINIC_FA1_GET(attr1, AEQS_PER_FUNC));  in set_hwif_attr()
209 	hwif->attr.num_ceqs = BIT(HINIC_FA1_GET(attr1, CEQS_PER_FUNC));  in set_hwif_attr()
210 	hwif->attr.num_irqs = BIT(HINIC_FA1_GET(attr1, IRQS_PER_FUNC));  in set_hwif_attr()
211 	hwif->attr.num_dma_attr = BIT(HINIC_FA1_GET(attr1, DMA_ATTR_PER_FUNC));  in set_hwif_attr()
212 	hwif->attr.global_vf_id_of_pf = HINIC_FA2_GET(attr2,  in set_hwif_attr()
217  * read_hwif_attr - read the attributes and set members in hwif
218  * @hwif: the HW interface of a pci function device
222 	u32 addr, attr0, attr1, attr2;  in read_hwif_attr()  local
224 	addr   = HINIC_CSR_FUNC_ATTR0_ADDR;  in read_hwif_attr()
225 	attr0  = hinic_hwif_read_reg(hwif, addr);  in read_hwif_attr()
227 	addr   = HINIC_CSR_FUNC_ATTR1_ADDR;  in read_hwif_attr()
228 	attr1  = hinic_hwif_read_reg(hwif, addr);  in read_hwif_attr()
230 	addr   = HINIC_CSR_FUNC_ATTR2_ADDR;  in read_hwif_attr()
231 	attr2  = hinic_hwif_read_reg(hwif, addr);  in read_hwif_attr()
237  * set_ppf - try to set hwif as ppf and set the type of hwif in this case
238  * @hwif: the HW interface of a pci function device
242 	struct hinic_func_attr *attr = &hwif->attr;  in set_ppf()
243 	u32 addr, val, ppf_election;  in set_ppf()  local
246 	addr = HINIC_CSR_PPF_ELECTION_ADDR(HINIC_HWIF_PCI_INTF(hwif));  in set_ppf()
248 	val = hinic_hwif_read_reg(hwif, addr);  in set_ppf()
254 	hinic_hwif_write_reg(hwif, addr, val);  in set_ppf()
257 	val = hinic_hwif_read_reg(hwif, addr);  in set_ppf()
259 	attr->ppf_idx = HINIC_PPF_ELECTION_GET(val, IDX);  in set_ppf()
260 	if (attr->ppf_idx == HINIC_HWIF_FUNC_IDX(hwif))  in set_ppf()
261 		attr->func_type = HINIC_PPF;  in set_ppf()
265  * set_dma_attr - set the dma attributes in the HW
266  * @hwif: the HW interface of a pci function device
279 	u32 addr, val, dma_attr_entry;  in set_dma_attr()  local
282 	addr = HINIC_CSR_DMA_ATTR_ADDR(entry_idx);  in set_dma_attr()
284 	val = hinic_hwif_read_reg(hwif, addr);  in set_dma_attr()
298 	hinic_hwif_write_reg(hwif, addr, val);  in set_dma_attr()
302  * dma_attr_init - initialize the default dma attributes
303  * @hwif: the HW interface of a pci function device
317 	return hwif->attr.global_vf_id_of_pf;  in hinic_glb_pf_vf_offset()
322 	u32 addr, attr0;  in hinic_global_func_id_hw()  local
324 	addr   = HINIC_CSR_FUNC_ATTR0_ADDR;  in hinic_global_func_id_hw()
325 	attr0  = hinic_hwif_read_reg(hwif, addr);  in hinic_global_func_id_hw()
332 	u32 addr, attr0;  in hinic_pf_id_of_vf_hw()  local
334 	addr   = HINIC_CSR_FUNC_ATTR0_ADDR;  in hinic_pf_id_of_vf_hw()
335 	attr0  = hinic_hwif_read_reg(hwif, addr);  in hinic_pf_id_of_vf_hw()
342 	u32 addr, attr0, attr1;  in __print_selftest_reg()  local
344 	addr   = HINIC_CSR_FUNC_ATTR1_ADDR;  in __print_selftest_reg()
345 	attr1  = hinic_hwif_read_reg(hwif, addr);  in __print_selftest_reg()
348 		dev_err(&hwif->pdev->dev, "PCIE is link down\n");  in __print_selftest_reg()
352 	addr   = HINIC_CSR_FUNC_ATTR0_ADDR;  in __print_selftest_reg()
353 	attr0  = hinic_hwif_read_reg(hwif, addr);  in __print_selftest_reg()
356 		dev_err(&hwif->pdev->dev, "Selftest reg: 0x%08x\n",  in __print_selftest_reg()
361  * hinic_init_hwif - initialize the hw interface
362  * @hwif: the HW interface of a pci function device
363  * @pdev: the pci device for accessing PCI resources
365  * Return 0 - Success, negative - Failure
371 	hwif->pdev = pdev;  in hinic_init_hwif()
373 	hwif->cfg_regs_bar = pci_ioremap_bar(pdev, HINIC_PCI_CFG_REGS_BAR);  in hinic_init_hwif()
374 	if (!hwif->cfg_regs_bar) {  in hinic_init_hwif()
375 		dev_err(&pdev->dev, "Failed to map configuration regs\n");  in hinic_init_hwif()
376 		return -ENOMEM;  in hinic_init_hwif()
379 	hwif->intr_regs_base = pci_ioremap_bar(pdev, HINIC_PCI_INTR_REGS_BAR);  in hinic_init_hwif()
380 	if (!hwif->intr_regs_base) {  in hinic_init_hwif()
381 		dev_err(&pdev->dev, "Failed to map configuration regs\n");  in hinic_init_hwif()
382 		err = -ENOMEM;  in hinic_init_hwif()
388 		dev_err(&pdev->dev, "HW interface is not ready\n");  in hinic_init_hwif()
403 	iounmap(hwif->intr_regs_base);  in hinic_init_hwif()
406 	iounmap(hwif->cfg_regs_bar);  in hinic_init_hwif()
412  * hinic_free_hwif - free the HW interface
413  * @hwif: the HW interface of a pci function device
417 	iounmap(hwif->intr_regs_base);  in hinic_free_hwif()
418 	iounmap(hwif->cfg_regs_bar);  in hinic_free_hwif()