1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Copyright 2014-2016 IBM Corp.
7 #include <asm/pnv-pci.h>
14 	struct pci_controller *hose = pci_bus_to_host(dev->bus);  in pnv_phb_to_cxl_mode()
15 	struct pnv_phb *phb = hose->private_data;  in pnv_phb_to_cxl_mode()
21 		return -ENODEV;  in pnv_phb_to_cxl_mode()
25 	rc = opal_pci_set_phb_cxl_mode(phb->opal_id, mode, pe->pe_number);  in pnv_phb_to_cxl_mode()
27 		dev_err(&dev->dev, "Required cxl mode not supported by firmware - update skiboot\n");  in pnv_phb_to_cxl_mode()
29 		dev_err(&dev->dev, "opal_pci_set_phb_cxl_mode failed: %i\n", rc);  in pnv_phb_to_cxl_mode()
40 	struct pci_controller *hose = pci_bus_to_host(dev->bus);  in pnv_cxl_alloc_hwirqs()
41 	struct pnv_phb *phb = hose->private_data;  in pnv_cxl_alloc_hwirqs()
42 	int hwirq = msi_bitmap_alloc_hwirqs(&phb->msi_bmp, num);  in pnv_cxl_alloc_hwirqs()
45 		dev_warn(&dev->dev, "Failed to find a free MSI\n");  in pnv_cxl_alloc_hwirqs()
46 		return -ENOSPC;  in pnv_cxl_alloc_hwirqs()
49 	return phb->msi_base + hwirq;  in pnv_cxl_alloc_hwirqs()
55 	struct pci_controller *hose = pci_bus_to_host(dev->bus);  in pnv_cxl_release_hwirqs()
56 	struct pnv_phb *phb = hose->private_data;  in pnv_cxl_release_hwirqs()
58 	msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq - phb->msi_base, num);  in pnv_cxl_release_hwirqs()
62 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,  in pnv_cxl_release_hwirq_ranges()  argument
65 	struct pci_controller *hose = pci_bus_to_host(dev->bus);  in pnv_cxl_release_hwirq_ranges()
66 	struct pnv_phb *phb = hose->private_data;  in pnv_cxl_release_hwirq_ranges()
70 		if (!irqs->range[i])  in pnv_cxl_release_hwirq_ranges()
73 			 i, irqs->offset[i],  in pnv_cxl_release_hwirq_ranges()
74 			 irqs->range[i]);  in pnv_cxl_release_hwirq_ranges()
75 		hwirq = irqs->offset[i] - phb->msi_base;  in pnv_cxl_release_hwirq_ranges()
76 		msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq,  in pnv_cxl_release_hwirq_ranges()
77 				       irqs->range[i]);  in pnv_cxl_release_hwirq_ranges()
82 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,  in pnv_cxl_alloc_hwirq_ranges()  argument
85 	struct pci_controller *hose = pci_bus_to_host(dev->bus);  in pnv_cxl_alloc_hwirq_ranges()
86 	struct pnv_phb *phb = hose->private_data;  in pnv_cxl_alloc_hwirq_ranges()
89 	memset(irqs, 0, sizeof(struct cxl_irq_ranges));  in pnv_cxl_alloc_hwirq_ranges()
91 	/* 0 is reserved for the multiplexed PSL DSI interrupt */  in pnv_cxl_alloc_hwirq_ranges()
95 			hwirq = msi_bitmap_alloc_hwirqs(&phb->msi_bmp, try);  in pnv_cxl_alloc_hwirq_ranges()
103 		irqs->offset[i] = phb->msi_base + hwirq;  in pnv_cxl_alloc_hwirq_ranges()
104 		irqs->range[i] = try;  in pnv_cxl_alloc_hwirq_ranges()
106 			 i, irqs->offset[i], irqs->range[i]);  in pnv_cxl_alloc_hwirq_ranges()
107 		num -= try;  in pnv_cxl_alloc_hwirq_ranges()
114 	pnv_cxl_release_hwirq_ranges(irqs, dev);  in pnv_cxl_alloc_hwirq_ranges()
115 	return -ENOSPC;  in pnv_cxl_alloc_hwirq_ranges()
121 	struct pci_controller *hose = pci_bus_to_host(dev->bus);  in pnv_cxl_get_irq_count()
122 	struct pnv_phb *phb = hose->private_data;  in pnv_cxl_get_irq_count()
124 	return phb->msi_bmp.irq_count;  in pnv_cxl_get_irq_count()
131 	struct pci_controller *hose = pci_bus_to_host(dev->bus);  in pnv_cxl_ioda_msi_setup()
132 	struct pnv_phb *phb = hose->private_data;  in pnv_cxl_ioda_msi_setup()
133 	unsigned int xive_num = hwirq - phb->msi_base;  in pnv_cxl_ioda_msi_setup()
138 		return -ENODEV;  in pnv_cxl_ioda_msi_setup()
141 	rc = opal_pci_set_xive_pe(phb->opal_id, pe->pe_number, xive_num);  in pnv_cxl_ioda_msi_setup()
145 			pci_name(dev), rc, phb->msi_base, hwirq, xive_num);  in pnv_cxl_ioda_msi_setup()
146 		return -EIO;  in pnv_cxl_ioda_msi_setup()
168 		return -ENODEV;  in get_cxl_module()