1 // SPDX-License-Identifier: GPL-2.0+
5 * Based on Linux PCI-EP driver written by
6 * Kishon Vijay Abraham I <kishon@ti.com>
9 * Written by Ramon Fried <ramon.fried@gmail.com>
15 #include <linux/log2.h>
18 DECLARE_GLOBAL_DATA_PTR;
20 int pci_ep_write_header(struct udevice *dev, uint fn, struct pci_ep_header *hdr)
22 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
24 if (!ops->write_header)
27 return ops->write_header(dev, fn, hdr);
30 int pci_ep_read_header(struct udevice *dev, uint fn, struct pci_ep_header *hdr)
32 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
34 if (!ops->read_header)
37 return ops->read_header(dev, fn, hdr);
40 int pci_ep_set_bar(struct udevice *dev, uint func_no, struct pci_bar *ep_bar)
42 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
43 int flags = ep_bar->flags;
45 /* Some basic bar validity checks */
46 if (ep_bar->barno > BAR_5 || ep_bar->barno < BAR_0)
49 if ((ep_bar->barno == BAR_5 &&
50 (flags & PCI_BASE_ADDRESS_MEM_TYPE_64)) ||
51 ((flags & PCI_BASE_ADDRESS_SPACE_IO) &&
52 (flags & PCI_BASE_ADDRESS_IO_MASK)) ||
53 (upper_32_bits(ep_bar->size) &&
54 !(flags & PCI_BASE_ADDRESS_MEM_TYPE_64)))
60 return ops->set_bar(dev, func_no, ep_bar);
63 int pci_ep_read_bar(struct udevice *dev, uint func_no, struct pci_bar *ep_bar,
66 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
68 /* Some basic bar validity checks */
69 if (barno > BAR_5 || barno < BAR_0)
75 return ops->read_bar(dev, func_no, ep_bar, barno);
78 int pci_ep_clear_bar(struct udevice *dev, uint func_num, enum pci_barno bar)
80 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
85 return ops->clear_bar(dev, func_num, bar);
88 int pci_ep_map_addr(struct udevice *dev, uint func_no, phys_addr_t addr,
89 u64 pci_addr, size_t size)
91 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
96 return ops->map_addr(dev, func_no, addr, pci_addr, size);
99 int pci_ep_unmap_addr(struct udevice *dev, uint func_no, phys_addr_t addr)
101 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
103 if (!ops->unmap_addr)
106 return ops->unmap_addr(dev, func_no, addr);
109 int pci_ep_set_msi(struct udevice *dev, uint func_no, uint interrupts)
111 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
120 /* MSI spec permits allocation of
121 * only 1, 2, 4, 8, 16, 32 interrupts
123 encode_int = order_base_2(interrupts);
125 return ops->set_msi(dev, func_no, encode_int);
128 int pci_ep_get_msi(struct udevice *dev, uint func_no)
130 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
136 interrupt = ops->get_msi(dev, func_no);
141 /* Translate back from order base 2*/
142 interrupt = 1 << interrupt;
147 int pci_ep_set_msix(struct udevice *dev, uint func_no, uint interrupts)
149 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
151 if (interrupts < 1 || interrupts > 2048)
157 return ops->set_msix(dev, func_no, interrupts - 1);
160 int pci_ep_get_msix(struct udevice *dev, uint func_no)
162 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
168 interrupt = ops->get_msix(dev, func_no);
173 return interrupt + 1;
176 int pci_ep_raise_irq(struct udevice *dev, uint func_no,
177 enum pci_ep_irq_type type, uint interrupt_num)
179 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
184 return ops->raise_irq(dev, func_no, type, interrupt_num);
187 int pci_ep_start(struct udevice *dev)
189 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
194 return ops->start(dev);
197 int pci_ep_stop(struct udevice *dev)
199 struct pci_ep_ops *ops = pci_ep_get_ops(dev);
204 return ops->stop(dev);
207 UCLASS_DRIVER(pci_ep) = {
210 .flags = DM_UC_FLAG_SEQ_ALIAS,