1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
34 #include <sys/bus.h>
63 legacy_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,  in legacy_pcib_read_config()  argument
66 	return(pci_cfgregread(0, bus, slot, func, reg, bytes));  in legacy_pcib_read_config()
72 legacy_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,  in legacy_pcib_write_config()  argument
75 	pci_cfgregwrite(0, bus, slot, func, reg, data, bytes);  in legacy_pcib_write_config()
99 	device_t bus;  in legacy_pcib_alloc_msi()  local
101 	bus = device_get_parent(pcib);  in legacy_pcib_alloc_msi()
102 	return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,  in legacy_pcib_alloc_msi()
109 	device_t bus;  in legacy_pcib_alloc_msix()  local
111 	bus = device_get_parent(pcib);  in legacy_pcib_alloc_msix()
112 	return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));  in legacy_pcib_alloc_msix()
119 	device_t bus, hostb;  in legacy_pcib_map_msi()  local
122 	bus = device_get_parent(pcib);  in legacy_pcib_map_msi()
123 	error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data);  in legacy_pcib_map_msi()
129 	if (slot == -1 || func == -1)  in legacy_pcib_map_msi()
139 legacy_pcib_is_host_bridge(int bus, int slot, int func,  in legacy_pcib_is_host_bridge()  argument
140 			  uint32_t id, uint8_t class, uint8_t subclass,  in legacy_pcib_is_host_bridge()  argument
149 	switch (id) {  in legacy_pcib_is_host_bridge()
153 		/* *busnum = legacy_pcib_read_config(0, bus, slot, func, 0x41, 1); */  in legacy_pcib_is_host_bridge()
154 		*busnum = bus;  in legacy_pcib_is_host_bridge()
160 		s = "Intel 82810-DC100 (i810-DC100 GMCH) Host To Hub bridge";  in legacy_pcib_is_host_bridge()
191 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x4a, 1);  in legacy_pcib_is_host_bridge()
200 		 * bus numbers for the PXB channels.  in legacy_pcib_is_host_bridge()
202 		 * Since the MIOC doesn't have a pci bus attached, we  in legacy_pcib_is_host_bridge()
205 		pxb[0] = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_is_host_bridge()
207 		pxb[1] = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_is_host_bridge()
209 		pxb[2] = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_is_host_bridge()
211 		pxb[3] = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_is_host_bridge()
217 			s = "Intel 82454NX PXB#0, Bus#A";  in legacy_pcib_is_host_bridge()
221 			s = "Intel 82454NX PXB#0, Bus#B";  in legacy_pcib_is_host_bridge()
225 			s = "Intel 82454NX PXB#1, Bus#A";  in legacy_pcib_is_host_bridge()
229 			s = "Intel 82454NX PXB#1, Bus#B";  in legacy_pcib_is_host_bridge()
238 		/* AMD -- vendor 0x1022 */  in legacy_pcib_is_host_bridge()
245 "*** WARNING: missing CPU_ELAN -- timekeeping may be wrong\n");  in legacy_pcib_is_host_bridge()
249 		s = "AMD-751 host to PCI bridge";  in legacy_pcib_is_host_bridge()
252 		s = "AMD-761 host to PCI bridge";  in legacy_pcib_is_host_bridge()
255 		/* SiS -- vendor 0x1039 */  in legacy_pcib_is_host_bridge()
272 		/* VLSI -- vendor 0x1004 */  in legacy_pcib_is_host_bridge()
278 		/* totally. Please let me know if anything wrong.            -F */  in legacy_pcib_is_host_bridge()
279 		/* XXX need info on the MVP3 -- any takers? */  in legacy_pcib_is_host_bridge()
284 		/* AcerLabs -- vendor 0x10b9 */  in legacy_pcib_is_host_bridge()
285 		/* Funny : The datasheet told me vendor id is "10b8",sub-vendor */  in legacy_pcib_is_host_bridge()
286 		/* id is '10b9" but the register always shows "10b9". -Foxfair  */  in legacy_pcib_is_host_bridge()
288 		s = "AcerLabs M1541 (Aladdin-V) PCI host bridge";  in legacy_pcib_is_host_bridge()
291 		/* OPTi -- vendor 0x1045 */  in legacy_pcib_is_host_bridge()
299 		/* ServerWorks -- vendor 0x1166 */  in legacy_pcib_is_host_bridge()
302 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);  in legacy_pcib_is_host_bridge()
311 	case 0x010f1014: /* IBM re-badged ServerWorks chipset */  in legacy_pcib_is_host_bridge()
313 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);  in legacy_pcib_is_host_bridge()
318 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);  in legacy_pcib_is_host_bridge()
323 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);  in legacy_pcib_is_host_bridge()
328 	case 0x03021014: /* IBM re-badged ServerWorks chipset */  in legacy_pcib_is_host_bridge()
329 		s = "ServerWorks CMIC-HE host to PCI-X bridge";  in legacy_pcib_is_host_bridge()
330 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);  in legacy_pcib_is_host_bridge()
340 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0x44, 1);  in legacy_pcib_is_host_bridge()
343 		/* Compaq/HP -- vendor 0x0e11 */  in legacy_pcib_is_host_bridge()
346 		*busnum = legacy_pcib_read_config(0, bus, slot, func, 0xc8, 1);  in legacy_pcib_is_host_bridge()
349 		/* Integrated Micro Solutions -- vendor 0x10e0 */  in legacy_pcib_is_host_bridge()
372  * Scan the first pci bus for host-pci bridges and add pcib instances
378 	int bus, slot, func;  in legacy_pcib_identify()  local
390 	 * Check to see if we haven't already had a PCI bus added  in legacy_pcib_identify()
398 	bus = 0;  in legacy_pcib_identify()
402 		hdrtype = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_identify()
405 		 * When enumerating bus devices, the standard says that  in legacy_pcib_identify()
421 			uint32_t id;  in legacy_pcib_identify()  local
427 			id = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_identify()
429 			if (id == -1)  in legacy_pcib_identify()
431 			class = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_identify()
433 			subclass = legacy_pcib_read_config(0, bus, slot, func,  in legacy_pcib_identify()
436 			s = legacy_pcib_is_host_bridge(bus, slot, func,  in legacy_pcib_identify()
437 						      id, class, subclass,  in legacy_pcib_identify()
443 			 * Check to see if the physical bus has already  in legacy_pcib_identify()
445 			 * bridges to the same logical bus.  in legacy_pcib_identify()
472 			if (id == 0x12258086)  in legacy_pcib_identify()
474 			if (id == 0x84c48086)  in legacy_pcib_identify()
478 	if (found824xx && bus == 0) {  in legacy_pcib_identify()
479 		bus++;  in legacy_pcib_identify()
485 	 * hardware doesn't actually have a host-pci bridge device.  in legacy_pcib_identify()
505 	return -100;  in legacy_pcib_probe()
513 	int bus;  in legacy_pcib_attach()  local
515 	bus = pcib_get_bus(dev);  in legacy_pcib_attach()
520 	if (pci_pir_probe(bus, 0)) {  in legacy_pcib_attach()
563  * Helper routine for x86 Host-PCI bridge driver resource allocation.
585 	if (start + count - 1 != end) {  in hostb_alloc_start()
652 	/* Bus interface */
683  * PCI bus interface.  This could be used to extract the
685  * ID is available and the PCI BIOS isn't, but for now we just
686  * eat the PnP ID and do nothing else.
691 	{ 0x030ad041 /* PNP0A03 */, "PCI Bus" },
692 	{ 0x080ad041 /* PNP0A08 */, "PCIe Bus" },
724  * Provide a PCI-PCI bridge driver for PCI buses behind PCI-PCI bridges
728 static int	pcibios_pcib_probe(device_t bus);
747 	int bus;  in pcibios_pcib_probe()  local
752 	bus = pci_read_config(dev, PCIR_SECBUS_1, 1);  in pcibios_pcib_probe()
753 	if (bus == 0)  in pcibios_pcib_probe()
755 	if (!pci_pir_probe(bus, 1))  in pcibios_pcib_probe()
757 	device_set_desc(dev, "PCIBIOS PCI-PCI bridge");  in pcibios_pcib_probe()
758 	return (-2000);  in pcibios_pcib_probe()