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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/sparc/include/asm/pbm.h
parentInitial commit. (diff)
downloadlinux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz
linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sparc/include/asm/pbm.h')
-rw-r--r--arch/sparc/include/asm/pbm.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/pbm.h b/arch/sparc/include/asm/pbm.h
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+++ b/arch/sparc/include/asm/pbm.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *
+ * pbm.h: PCI bus module pseudo driver software state
+ * Adopted from sparc64 by V. Roganov and G. Raiko
+ *
+ * Original header:
+ * pbm.h: U2P PCI bus module pseudo driver software state.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * To put things into perspective, consider sparc64 with a few PCI controllers.
+ * Each type would have an own structure, with instances related one to one.
+ * We have only pcic on sparc, but we want to be compatible with sparc64 pbm.h.
+ * All three represent different abstractions.
+ * pci_bus - Linux PCI subsystem view of a PCI bus (including bridged buses)
+ * pbm - Arch-specific view of a PCI bus (sparc or sparc64)
+ * pcic - Chip-specific information for PCIC.
+ */
+
+#ifndef __SPARC_PBM_H
+#define __SPARC_PBM_H
+
+#include <linux/pci.h>
+#include <asm/oplib.h>
+#include <asm/prom.h>
+
+struct linux_pbm_info {
+ int prom_node;
+ char prom_name[64];
+ /* struct linux_prom_pci_ranges pbm_ranges[PROMREG_MAX]; */
+ /* int num_pbm_ranges; */
+
+ /* Now things for the actual PCI bus probes. */
+ unsigned int pci_first_busno; /* Can it be nonzero? */
+ struct pci_bus *pci_bus; /* Was inline, MJ allocs now */
+};
+
+/* PCI devices which are not bridges have this placed in their pci_dev
+ * sysdata member. This makes OBP aware PCI device drivers easier to
+ * code.
+ */
+struct pcidev_cookie {
+ struct linux_pbm_info *pbm;
+ struct device_node *prom_node;
+};
+
+#endif /* !(__SPARC_PBM_H) */