1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  64-bit pSeries and RS/6000 setup code.
48 #include <asm/pci-bridge.h>
58 #include <asm/ppc-pci.h>
62 #include <asm/firmware.h>
67 #include <asm/isa-bridge.h>
69 #include <asm/asm-const.h>
82 int CMO_PrPSP = -1;
83 int CMO_SecPSP = -1;
107 /* Initialize firmware assisted non-maskable interrupts if
108  * the firmware supports this feature.
122 	ibm_nmi_register_token = rtas_token("ibm,nmi-register");  in fwnmi_init()
126 	ibm_nmi_interlock_token = rtas_token("ibm,nmi-interlock");  in fwnmi_init()
130 	/* If the kernel's not linked at zero we point the firmware at low  in fwnmi_init()
132 	system_reset_addr  = __pa(system_reset_fwnmi) - PHYSICAL_START;  in fwnmi_init()
133 	machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START;  in fwnmi_init()
152 		paca_ptrs[i]->mce_data_buf = mce_data_buf +  in fwnmi_init()
168 			paca_ptrs[i]->mce_faulty_slbs = slb_ptr + (mmu_slb_size * i);  in fwnmi_init()
181 	chip->irq_eoi(&desc->irq_data);  in pseries_8259_cascade()
192 	for_each_node_by_type(np, "interrupt-controller") {  in pseries_setup_i8259_cascade()
218 		addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);  in pseries_setup_i8259_cascade()
222 		intack = addrp[naddr-1];  in pseries_setup_i8259_cascade()
224 			intack |= ((unsigned long)addrp[naddr-2]) << 32;  in pseries_setup_i8259_cascade()
254 	struct device_node *parent, *np = rd->dn;  in pci_dn_reconfig_notifier()
263 			pci_add_device_node_info(pdn->phb, np);  in pci_dn_reconfig_notifier()
270 			list_del(&pdn->list);  in pci_dn_reconfig_notifier()
360  * just give up rather than wasting any more time on this - if that turns out
485 		phb->controller_ops = pseries_pci_controller_ops;  in pSeries_discover_phbs()
506 	 * if firmware has *enabled* them, and set them if so.  in init_cpu_char_feature_flags()
508 	if (result->character & H_CPU_CHAR_SPEC_BAR_ORI31)  in init_cpu_char_feature_flags()
511 	if (result->character & H_CPU_CHAR_BCCTRL_SERIALISED)  in init_cpu_char_feature_flags()
514 	if (result->character & H_CPU_CHAR_L1D_FLUSH_ORI30)  in init_cpu_char_feature_flags()
517 	if (result->character & H_CPU_CHAR_L1D_FLUSH_TRIG2)  in init_cpu_char_feature_flags()
520 	if (result->character & H_CPU_CHAR_L1D_THREAD_PRIV)  in init_cpu_char_feature_flags()
523 	if (result->character & H_CPU_CHAR_COUNT_CACHE_DISABLED)  in init_cpu_char_feature_flags()
526 	if (result->character & H_CPU_CHAR_BCCTR_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
529 	if (result->character & H_CPU_CHAR_BCCTR_LINK_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
532 	if (result->behaviour & H_CPU_BEHAV_FLUSH_COUNT_CACHE)  in init_cpu_char_feature_flags()
535 	if (result->behaviour & H_CPU_BEHAV_FLUSH_LINK_STACK)  in init_cpu_char_feature_flags()
540 	 * if firmware has *disabled* them, and clear them if so.  in init_cpu_char_feature_flags()
544 	if (!(result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY)) {  in init_cpu_char_feature_flags()
547 	} else if (result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY_H)  in init_cpu_char_feature_flags()
552 	if (!(result->behaviour & H_CPU_BEHAV_L1D_FLUSH_PR))  in init_cpu_char_feature_flags()
555 	if (result->behaviour & H_CPU_BEHAV_NO_L1D_FLUSH_ENTRY)  in init_cpu_char_feature_flags()
558 	if (result->behaviour & H_CPU_BEHAV_NO_L1D_FLUSH_UACCESS)  in init_cpu_char_feature_flags()
561 	if (result->behaviour & H_CPU_BEHAV_NO_STF_BARRIER)  in init_cpu_char_feature_flags()
564 	if (!(result->behaviour & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR))  in init_cpu_char_feature_flags()
640 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_get_iov_fw_value()
679 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_set_vf_bar_size()
682 		res->flags = pci_parse_of_flags(of_read_number  in of_pci_set_vf_bar_size()
684 		res->flags |= (IORESOURCE_MEM_64 | IORESOURCE_PCI_FIXED);  in of_pci_set_vf_bar_size()
685 		res->name = pci_name(dev);  in of_pci_set_vf_bar_size()
686 		res->start = base;  in of_pci_set_vf_bar_size()
687 		res->end = base + size - 1;  in of_pci_set_vf_bar_size()
700 	 * bars assign them from firmware into resources structure.  in of_pci_parse_iov_addrs()
705 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_parse_iov_addrs()
708 		res->name = pci_name(dev);  in of_pci_parse_iov_addrs()
709 		res->start = base;  in of_pci_parse_iov_addrs()
710 		res->end = base + size - 1;  in of_pci_parse_iov_addrs()
712 		dev_dbg(&dev->dev,  in of_pci_parse_iov_addrs()
713 			"pSeries IOV BAR %d: trying firmware assignment %pR\n",  in of_pci_parse_iov_addrs()
717 			dev_info(&dev->dev,  in of_pci_parse_iov_addrs()
720 				 conflict->name, conflict);  in of_pci_parse_iov_addrs()
721 			res->flags |= IORESOURCE_UNSET;  in of_pci_parse_iov_addrs()
730 	pci_warn(pdev, "No hypervisor support for SR-IOV on this device, IOV BARs disabled.\n");  in pseries_disable_sriov_resources()
732 		pdev->resource[i + PCI_IOV_RESOURCES].flags = 0;  in pseries_disable_sriov_resources()
740 	/*Firmware must support open sriov otherwise dont configure*/  in pseries_pci_fixup_resources()
741 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_resources()
753 	if (!pdev->is_physfn || pci_dev_is_added(pdev))  in pseries_pci_fixup_iov_resources()
755 	/*Firmware must support open sriov otherwise dont configure*/  in pseries_pci_fixup_iov_resources()
756 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_iov_resources()
769 	/*Firmware must support open sriov otherwise report regular alignment*/  in pseries_pci_iov_resource_alignment()
770 	reg = of_get_property(dn, "ibm,is-open-sriov-pf", NULL);  in pseries_pci_iov_resource_alignment()
774 	if (!pdev->is_physfn)  in pseries_pci_iov_resource_alignment()
777 					resno - PCI_IOV_RESOURCES,  in pseries_pci_iov_resource_alignment()
795 	/* openpic global configuration register (64-bit format). */  in pSeries_setup_arch()
796 	/* openpic Interrupt Source Unit pointer (64-bit format). */  in pSeries_setup_arch()
797 	/* python0 facility area (mmio) (64-bit format) REAL address. */  in pSeries_setup_arch()
859 	ppc_md.progress(init_utsname()->version, 0);  in pSeries_init_panel()
906  * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
915 	pr_debug(" -> fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
918 	call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,  in pSeries_cmo_feature_init()
927 		pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
931 	end = rtas_data_buf + CMO_MAXLENGTH - 2;  in pSeries_cmo_feature_init()
969 	if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {  in pSeries_cmo_feature_init()
979 	pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
987 	pr_debug(" -> pseries_init()\n");  in pseries_init()
1004 	pr_debug(" <- pseries_init()\n");  in pseries_init()
1008  * pseries_power_off - tell firmware about how to power off the system.
1010  * This function calls either the power-off rtas token in normal cases
1011  * or the ibm,power-off-ups token (if present & requested) in case of
1012  * a power failure. If power-off token is used, power on will only be
1013  * possible with power button press. If ibm,power-off-ups token is used
1019 	int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups");  in pseries_power_off()
1026 		rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1);  in pseries_power_off()
1027 		printk(KERN_INFO "RTAS power-off returned %d\n", rc);  in pseries_power_off()
1030 		printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);  in pseries_power_off()
1040 	/* Cell blades firmware claims to be chrp while it's not. Until this  in pSeries_probe()
1043 	if (of_machine_is_compatible("IBM,CPBW-1.0") ||  in pSeries_probe()