From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- arch/sparc/include/asm/mdesc.h | 99 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 arch/sparc/include/asm/mdesc.h (limited to 'arch/sparc/include/asm/mdesc.h') diff --git a/arch/sparc/include/asm/mdesc.h b/arch/sparc/include/asm/mdesc.h new file mode 100644 index 000000000..ec31a06d0 --- /dev/null +++ b/arch/sparc/include/asm/mdesc.h @@ -0,0 +1,99 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _SPARC64_MDESC_H +#define _SPARC64_MDESC_H + +#include +#include +#include + +struct mdesc_handle; + +/* Machine description operations are to be surrounded by grab and + * release calls. The mdesc_handle returned from the grab is + * the first argument to all of the operational calls that work + * on mdescs. + */ +struct mdesc_handle *mdesc_grab(void); +void mdesc_release(struct mdesc_handle *); + +#define MDESC_NODE_NULL (~(u64)0) +#define MDESC_MAX_STR_LEN 256 + +u64 mdesc_node_by_name(struct mdesc_handle *handle, + u64 from_node, const char *name); +#define mdesc_for_each_node_by_name(__hdl, __node, __name) \ + for (__node = mdesc_node_by_name(__hdl, MDESC_NODE_NULL, __name); \ + (__node) != MDESC_NODE_NULL; \ + __node = mdesc_node_by_name(__hdl, __node, __name)) + +/* Access to property values returned from mdesc_get_property() are + * only valid inside of a mdesc_grab()/mdesc_release() sequence. + * Once mdesc_release() is called, the memory backed up by these + * pointers may reference freed up memory. + * + * Therefore callers must make copies of any property values + * they need. + * + * These same rules apply to mdesc_node_name(). + */ +const void *mdesc_get_property(struct mdesc_handle *handle, + u64 node, const char *name, int *lenp); +const char *mdesc_node_name(struct mdesc_handle *hp, u64 node); + +/* MD arc iteration, the standard sequence is: + * + * unsigned long arc; + * mdesc_for_each_arc(arc, handle, node, MDESC_ARC_TYPE_{FWD,BACK}) { + * unsigned long target = mdesc_arc_target(handle, arc); + * ... + * } + */ + +#define MDESC_ARC_TYPE_FWD "fwd" +#define MDESC_ARC_TYPE_BACK "back" + +u64 mdesc_next_arc(struct mdesc_handle *handle, u64 from, + const char *arc_type); +#define mdesc_for_each_arc(__arc, __hdl, __node, __type) \ + for (__arc = mdesc_next_arc(__hdl, __node, __type); \ + (__arc) != MDESC_NODE_NULL; \ + __arc = mdesc_next_arc(__hdl, __arc, __type)) + +u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc); + +void mdesc_update(void); + +struct mdesc_notifier_client { + void (*add)(struct mdesc_handle *handle, u64 node, + const char *node_name); + void (*remove)(struct mdesc_handle *handle, u64 node, + const char *node_name); + const char *node_name; + struct mdesc_notifier_client *next; +}; + +void mdesc_register_notifier(struct mdesc_notifier_client *client); + +union md_node_info { + struct vdev_port { + u64 id; /* id */ + u64 parent_cfg_hdl; /* parent config handle */ + const char *name; /* name (property) */ + } vdev_port; + struct ds_port { + u64 id; /* id */ + } ds_port; +}; + +u64 mdesc_get_node(struct mdesc_handle *hp, const char *node_name, + union md_node_info *node_info); +int mdesc_get_node_info(struct mdesc_handle *hp, u64 node, + const char *node_name, union md_node_info *node_info); + +void mdesc_fill_in_cpu_data(cpumask_t *mask); +void mdesc_populate_present_mask(cpumask_t *mask); +void mdesc_get_page_sizes(cpumask_t *mask, unsigned long *pgsz_mask); + +void sun4v_mdesc_init(void); + +#endif -- cgit v1.2.3