diff options
Diffstat (limited to 'drivers/pci/vc.c')
| -rw-r--r-- | drivers/pci/vc.c | 38 |
1 files changed, 17 insertions, 21 deletions
diff --git a/drivers/pci/vc.c b/drivers/pci/vc.c index 1fa3a3219c45..a4ff7f5f66dd 100644 --- a/drivers/pci/vc.c +++ b/drivers/pci/vc.c @@ -1,14 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCI Virtual Channel support * * Copyright (C) 2013 Red Hat, Inc. All rights reserved. * Author: Alex Williamson <alex.williamson@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ +#include <linux/bitfield.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/module.h> @@ -16,6 +14,8 @@ #include <linux/pci_regs.h> #include <linux/types.h> +#include "pci.h" + /** * pci_vc_save_restore_dwords - Save or restore a series of dwords * @dev: device @@ -57,7 +57,7 @@ static void pci_vc_load_arb_table(struct pci_dev *dev, int pos) PCI_VC_PORT_STATUS_TABLE)) return; - dev_err(&dev->dev, "VC arbitration table failed to load\n"); + pci_err(dev, "VC arbitration table failed to load\n"); } /** @@ -85,7 +85,7 @@ static void pci_vc_load_port_arb_table(struct pci_dev *dev, int pos, int res) if (pci_wait_for_pending(dev, status_pos, PCI_VC_RES_STATUS_TABLE)) return; - dev_err(&dev->dev, "VC%d port arbitration table failed to load\n", res); + pci_err(dev, "VC%d port arbitration table failed to load\n", res); } /** @@ -108,7 +108,7 @@ static void pci_vc_enable(struct pci_dev *dev, int pos, int res) struct pci_dev *link = NULL; /* Enable VCs from the downstream device */ - if (!dev->has_secondary_link) + if (!pci_is_pcie(dev) || !pcie_downstream_port(dev)) return; ctrl_pos = pos + PCI_VC_RES_CTRL + (res * PCI_CAP_VC_PER_VC_SIZEOF); @@ -161,11 +161,11 @@ enable: pci_write_config_dword(dev, ctrl_pos, ctrl); if (!pci_wait_for_pending(dev, status_pos, PCI_VC_RES_STATUS_NEGO)) - dev_err(&dev->dev, "VC%d negotiation stuck pending\n", id); + pci_err(dev, "VC%d negotiation stuck pending\n", id); if (link && !pci_wait_for_pending(link, status_pos2, PCI_VC_RES_STATUS_NEGO)) - dev_err(&link->dev, "VC%d negotiation stuck pending\n", id); + pci_err(link, "VC%d negotiation stuck pending\n", id); } /** @@ -173,7 +173,6 @@ enable: * @dev: device * @pos: starting position of VC capability (VC/VC9/MFVC) * @save_state: buffer for save/restore - * @name: for error message * @save: if provided a buffer, this indicates what to do with it * * Walking Virtual Channel config space to size, save, or restore it @@ -195,8 +194,7 @@ static int pci_vc_do_save_buffer(struct pci_dev *dev, int pos, /* Sanity check buffer size for save/restore */ if (buf && save_state->cap.size != pci_vc_do_save_buffer(dev, pos, NULL, save)) { - dev_err(&dev->dev, - "VC save buffer size does not match @0x%x\n", pos); + pci_err(dev, "VC save buffer size does not match @0x%x\n", pos); return -ENOMEM; } @@ -204,9 +202,9 @@ static int pci_vc_do_save_buffer(struct pci_dev *dev, int pos, /* Extended VC Count (not counting VC0) */ evcc = cap1 & PCI_VC_CAP1_EVCC; /* Low Priority Extended VC Count (not counting VC0) */ - lpevcc = (cap1 & PCI_VC_CAP1_LPEVCC) >> 4; + lpevcc = FIELD_GET(PCI_VC_CAP1_LPEVCC, cap1); /* Port Arbitration Table Entry Size (bits) */ - parb_size = 1 << ((cap1 & PCI_VC_CAP1_ARB_SIZE) >> 10); + parb_size = 1 << FIELD_GET(PCI_VC_CAP1_ARB_SIZE, cap1); /* * Port VC Control Register contains VC Arbitration Select, which @@ -234,7 +232,7 @@ static int pci_vc_do_save_buffer(struct pci_dev *dev, int pos, int vcarb_offset; pci_read_config_dword(dev, pos + PCI_VC_PORT_CAP2, &cap2); - vcarb_offset = ((cap2 & PCI_VC_CAP2_ARB_OFF) >> 24) * 16; + vcarb_offset = FIELD_GET(PCI_VC_CAP2_ARB_OFF, cap2) * 16; if (vcarb_offset) { int size, vcarb_phases = 0; @@ -280,7 +278,7 @@ static int pci_vc_do_save_buffer(struct pci_dev *dev, int pos, pci_read_config_dword(dev, pos + PCI_VC_RES_CAP + (i * PCI_CAP_VC_PER_VC_SIZEOF), &cap); - parb_offset = ((cap & PCI_VC_RES_CAP_ARB_OFF) >> 24) * 16; + parb_offset = FIELD_GET(PCI_VC_RES_CAP_ARB_OFF, cap) * 16; if (parb_offset) { int size, parb_phases = 0; @@ -366,14 +364,14 @@ int pci_save_vc_state(struct pci_dev *dev) save_state = pci_find_saved_ext_cap(dev, vc_caps[i].id); if (!save_state) { - dev_err(&dev->dev, "%s buffer not found in %s\n", + pci_err(dev, "%s buffer not found in %s\n", vc_caps[i].name, __func__); return -ENOMEM; } ret = pci_vc_do_save_buffer(dev, pos, save_state, true); if (ret) { - dev_err(&dev->dev, "%s save unsuccessful %s\n", + pci_err(dev, "%s save unsuccessful %s\n", vc_caps[i].name, __func__); return ret; } @@ -413,7 +411,6 @@ void pci_restore_vc_state(struct pci_dev *dev) * For each type of VC capability, VC/VC9/MFVC, find the capability, size * it, and allocate a buffer for save/restore. */ - void pci_allocate_vc_save_buffers(struct pci_dev *dev) { int i; @@ -426,8 +423,7 @@ void pci_allocate_vc_save_buffers(struct pci_dev *dev) len = pci_vc_do_save_buffer(dev, pos, NULL, false); if (pci_add_ext_cap_save_buffer(dev, vc_caps[i].id, len)) - dev_err(&dev->dev, - "unable to preallocate %s save buffer\n", + pci_err(dev, "unable to preallocate %s save buffer\n", vc_caps[i].name); } } |