280 lines
8.8 KiB
C
280 lines
8.8 KiB
C
/*-
|
|
* Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
|
|
* Copyright (c) 2017 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* Portions of this software were developed by Landon Fuller
|
|
* under sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* Portions of this software were developed by Landon Fuller
|
|
* under sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
|
|
* redistribution must be conditioned upon including a substantially
|
|
* similar Disclaimer requirement for further binary redistribution.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
|
|
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
|
|
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGES.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _BHND_BHNDB_PRIVATE_H_
|
|
#define _BHND_BHNDB_PRIVATE_H_
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/bitstring.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <sys/rman.h>
|
|
#include <machine/resource.h>
|
|
|
|
#include "bhndbvar.h"
|
|
|
|
/*
|
|
* Private bhndb(4) driver definitions.
|
|
*/
|
|
|
|
struct bhndb_dw_alloc;
|
|
struct bhndb_intr_handler;
|
|
struct bhndb_region;
|
|
struct bhndb_resources;
|
|
|
|
struct bhndb_resources *bhndb_alloc_resources(device_t dev,
|
|
device_t parent_dev,
|
|
const struct bhndb_hwcfg *cfg);
|
|
|
|
void bhndb_free_resources(
|
|
struct bhndb_resources *br);
|
|
|
|
int bhndb_add_resource_region(
|
|
struct bhndb_resources *br,
|
|
bhnd_addr_t addr, bhnd_size_t size,
|
|
bhndb_priority_t priority,
|
|
uint32_t alloc_flags,
|
|
const struct bhndb_regwin *static_regwin);
|
|
|
|
int bhndb_find_resource_limits(
|
|
struct bhndb_resources *br, int type,
|
|
struct resource *r, rman_res_t *start,
|
|
rman_res_t *end);
|
|
|
|
struct bhndb_intr_handler *bhndb_alloc_intr_handler(device_t owner,
|
|
struct resource *r,
|
|
struct bhndb_intr_isrc *isrc);
|
|
void bhndb_free_intr_handler(
|
|
struct bhndb_intr_handler *ih);
|
|
|
|
void bhndb_register_intr_handler(
|
|
struct bhndb_resources *br,
|
|
struct bhndb_intr_handler *ih);
|
|
void bhndb_deregister_intr_handler(
|
|
struct bhndb_resources *br,
|
|
struct bhndb_intr_handler *ih);
|
|
struct bhndb_intr_handler *bhndb_find_intr_handler(
|
|
struct bhndb_resources *br,
|
|
void *cookiep);
|
|
|
|
bool bhndb_has_static_region_mapping(
|
|
struct bhndb_resources *br,
|
|
bhnd_addr_t addr, bhnd_size_t size);
|
|
|
|
struct bhndb_region *bhndb_find_resource_region(
|
|
struct bhndb_resources *br,
|
|
bhnd_addr_t addr, bhnd_size_t size);
|
|
|
|
struct bhndb_dw_alloc *bhndb_dw_find_resource(
|
|
struct bhndb_resources *dr,
|
|
struct resource *r);
|
|
|
|
struct bhndb_dw_alloc *bhndb_dw_find_mapping(
|
|
struct bhndb_resources *br,
|
|
bhnd_addr_t addr, bhnd_size_t size);
|
|
|
|
int bhndb_dw_retain(
|
|
struct bhndb_resources *br,
|
|
struct bhndb_dw_alloc *dwa,
|
|
struct resource *res);
|
|
|
|
void bhndb_dw_release(
|
|
struct bhndb_resources *br,
|
|
struct bhndb_dw_alloc *dwa,
|
|
struct resource *res);
|
|
|
|
int bhndb_dw_set_addr(device_t dev,
|
|
struct bhndb_resources *br,
|
|
struct bhndb_dw_alloc *dwa,
|
|
bus_addr_t addr, bus_size_t size);
|
|
|
|
struct bhndb_dw_alloc *bhndb_dw_steal(struct bhndb_resources *br,
|
|
bus_addr_t *saved);
|
|
|
|
void bhndb_dw_return_stolen(device_t dev,
|
|
struct bhndb_resources *br,
|
|
struct bhndb_dw_alloc *dwa,
|
|
bus_addr_t saved);
|
|
|
|
const struct bhndb_hw_priority *bhndb_hw_priority_find_core(
|
|
const struct bhndb_hw_priority *table,
|
|
struct bhnd_core_info *core);
|
|
|
|
const struct bhndb_port_priority *bhndb_hw_priorty_find_port(
|
|
const struct bhndb_hw_priority *table,
|
|
struct bhnd_core_info *core,
|
|
bhnd_port_type port_type, u_int port,
|
|
u_int region);
|
|
|
|
/**
|
|
* Dynamic register window allocation reference.
|
|
*/
|
|
struct bhndb_dw_rentry {
|
|
struct resource *dw_res; /**< child resource */
|
|
LIST_ENTRY(bhndb_dw_rentry) dw_link;
|
|
};
|
|
|
|
/**
|
|
* A dynamic register window allocation record.
|
|
*/
|
|
struct bhndb_dw_alloc {
|
|
const struct bhndb_regwin *win; /**< window definition */
|
|
struct resource *parent_res; /**< enclosing resource */
|
|
u_int rnid; /**< region identifier */
|
|
rman_res_t target; /**< the current window address, or 0x0 if unknown */
|
|
|
|
LIST_HEAD(, bhndb_dw_rentry) refs; /**< references */
|
|
};
|
|
|
|
/**
|
|
* A bus address region description.
|
|
*/
|
|
struct bhndb_region {
|
|
bhnd_addr_t addr; /**< start of mapped range */
|
|
bhnd_size_t size; /**< size of mapped range */
|
|
bhndb_priority_t priority; /**< direct resource allocation priority */
|
|
uint32_t alloc_flags; /**< resource allocation flags (@see bhndb_alloc_flags) */
|
|
const struct bhndb_regwin *static_regwin; /**< fixed mapping regwin, if any */
|
|
|
|
STAILQ_ENTRY(bhndb_region) link;
|
|
};
|
|
|
|
/**
|
|
* Attached interrupt handler state
|
|
*/
|
|
struct bhndb_intr_handler {
|
|
device_t ih_owner; /**< child device */
|
|
struct resource *ih_res; /**< child resource */
|
|
void *ih_cookiep; /**< hostb-assigned cookiep, or NULL if bus_setup_intr() incomplete. */
|
|
struct bhndb_intr_isrc *ih_isrc; /**< host interrupt source routing the child's interrupt */
|
|
bool ih_active; /**< handler has been registered via bhndb_register_intr_handler */
|
|
|
|
STAILQ_ENTRY(bhndb_intr_handler) ih_link;
|
|
};
|
|
|
|
/**
|
|
* BHNDB resource allocation state.
|
|
*/
|
|
struct bhndb_resources {
|
|
device_t dev; /**< bridge device */
|
|
const struct bhndb_hwcfg *cfg; /**< hardware configuration */
|
|
|
|
struct bhndb_host_resources *res; /**< host resources, or NULL if not allocated */
|
|
|
|
struct rman ht_mem_rman; /**< host memory manager */
|
|
struct rman br_mem_rman; /**< bridged memory manager */
|
|
struct rman br_irq_rman; /**< bridged irq manager */
|
|
|
|
STAILQ_HEAD(, bhndb_region) bus_regions; /**< bus region descriptors */
|
|
|
|
struct mtx dw_steal_mtx; /**< spinlock must be held when stealing a dynamic window allocation */
|
|
struct bhndb_dw_alloc *dw_alloc; /**< dynamic window allocation records */
|
|
size_t dwa_count; /**< number of dynamic windows available. */
|
|
bitstr_t *dwa_freelist; /**< dynamic window free list */
|
|
bhndb_priority_t min_prio; /**< minimum resource priority required to
|
|
allocate a dynamic window */
|
|
|
|
STAILQ_HEAD(,bhndb_intr_handler) bus_intrs; /**< attached child interrupt handlers */
|
|
};
|
|
|
|
/**
|
|
* Returns true if the all dynamic windows are marked free, false
|
|
* otherwise.
|
|
*
|
|
* @param br The resource state to check.
|
|
*/
|
|
static inline bool
|
|
bhndb_dw_all_free(struct bhndb_resources *br)
|
|
{
|
|
int bit;
|
|
bit_ffs(br->dwa_freelist, br->dwa_count, &bit);
|
|
return (bit == -1);
|
|
}
|
|
|
|
/**
|
|
* Find the next free dynamic window region in @p br.
|
|
*
|
|
* @param br The resource state to search.
|
|
*/
|
|
static inline struct bhndb_dw_alloc *
|
|
bhndb_dw_next_free(struct bhndb_resources *br)
|
|
{
|
|
struct bhndb_dw_alloc *dw_free;
|
|
int bit;
|
|
|
|
bit_ffc(br->dwa_freelist, br->dwa_count, &bit);
|
|
if (bit == -1)
|
|
return (NULL);
|
|
|
|
dw_free = &br->dw_alloc[bit];
|
|
|
|
KASSERT(LIST_EMPTY(&dw_free->refs),
|
|
("free list out of sync with refs"));
|
|
|
|
return (dw_free);
|
|
}
|
|
|
|
/**
|
|
* Returns true if a dynamic window allocation is marked as free.
|
|
*
|
|
* @param br The resource state owning @p dwa.
|
|
* @param dwa The dynamic window allocation record to be checked.
|
|
*/
|
|
static inline bool
|
|
bhndb_dw_is_free(struct bhndb_resources *br, struct bhndb_dw_alloc *dwa)
|
|
{
|
|
bool is_free = LIST_EMPTY(&dwa->refs);
|
|
|
|
KASSERT(is_free == !bit_test(br->dwa_freelist, dwa->rnid),
|
|
("refs out of sync with free list"));
|
|
|
|
return (is_free);
|
|
}
|
|
|
|
#define BHNDB_LOCK_INIT(sc) \
|
|
mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->dev), \
|
|
"bhndb resource allocator lock", MTX_DEF)
|
|
#define BHNDB_LOCK(sc) mtx_lock(&(sc)->sc_mtx)
|
|
#define BHNDB_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
|
|
#define BHNDB_LOCK_ASSERT(sc, what) mtx_assert(&(sc)->sc_mtx, what)
|
|
#define BHNDB_LOCK_DESTROY(sc) mtx_destroy(&(sc)->sc_mtx)
|
|
|
|
#endif /* _BHND_BHNDB_PRIVATE_H_ */
|