[src/trunk]: src/sys/external/bsd/drm2/include/linux Add pci_enable_rom/pci_d...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/03fef3b05112
branches:  trunk
changeset: 336314:03fef3b05112
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Feb 25 14:49:01 2015 +0000

description:
Add pci_enable_rom/pci_disable_rom to <linux/pci.h>.

diffstat:

 sys/external/bsd/drm2/include/linux/pci.h |  37 ++++++++++++++++++++++++++++++-
 1 files changed, 36 insertions(+), 1 deletions(-)

diffs (58 lines):

diff -r bacd66d15875 -r 03fef3b05112 sys/external/bsd/drm2/include/linux/pci.h
--- a/sys/external/bsd/drm2/include/linux/pci.h Wed Feb 25 14:36:58 2015 +0000
+++ b/sys/external/bsd/drm2/include/linux/pci.h Wed Feb 25 14:49:01 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci.h,v 1.11 2014/11/11 11:30:21 nonaka Exp $  */
+/*     $NetBSD: pci.h,v 1.12 2015/02/25 14:49:01 riastradh Exp $       */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -444,6 +444,7 @@
 pci_unmap_rom(struct pci_dev *pdev, void __pci_rom_iomem *vaddr __unused)
 {
 
+       /* XXX Disable the ROM address decoder.  */
        KASSERT(ISSET(pdev->pd_kludges, NBPCI_KLUDGE_MAP_ROM));
        KASSERT(vaddr == pdev->pd_rom_vaddr);
        bus_space_unmap(pdev->pd_rom_bst, pdev->pd_rom_bsh, pdev->pd_rom_size);
@@ -510,6 +511,40 @@
        return pdev->pd_rom_vaddr;
 }
 
+static inline int
+pci_enable_rom(struct pci_dev *pdev)
+{
+       const pci_chipset_tag_t pc = pdev->pd_pa.pa_pc;
+       const pcitag_t tag = pdev->pd_pa.pa_tag;
+       pcireg_t addr;
+       int s;
+
+       /* XXX Don't do anything if the ROM isn't there.  */
+
+       s = splhigh();
+       addr = pci_conf_read(pc, tag, PCI_MAPREG_ROM);
+       addr |= PCI_MAPREG_ROM_ENABLE;
+       pci_conf_write(pc, tag, PCI_MAPREG_ROM, addr);
+       splx(s);
+
+       return 0;
+}
+
+static inline void
+pci_disable_rom(struct pci_dev *pdev)
+{
+       const pci_chipset_tag_t pc = pdev->pd_pa.pa_pc;
+       const pcitag_t tag = pdev->pd_pa.pa_tag;
+       pcireg_t addr;
+       int s;
+
+       s = splhigh();
+       addr = pci_conf_read(pc, tag, PCI_MAPREG_ROM);
+       addr &= ~(pcireg_t)PCI_MAPREG_ROM_ENABLE;
+       pci_conf_write(pc, tag, PCI_MAPREG_ROM, addr);
+       splx(s);
+}
+
 static inline bus_addr_t
 pci_resource_start(struct pci_dev *pdev, unsigned i)
 {