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Diffstat (limited to 'drivers/staging/fsl_qbman/bman_private.h')
| -rw-r--r-- | drivers/staging/fsl_qbman/bman_private.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/staging/fsl_qbman/bman_private.h b/drivers/staging/fsl_qbman/bman_private.h new file mode 100644 index 0000000..64eefe7 --- /dev/null +++ b/drivers/staging/fsl_qbman/bman_private.h @@ -0,0 +1,166 @@ +/* Copyright 2008-2012 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE. + */ + +#include "dpa_sys.h" +#include <linux/fsl_bman.h> + +/* Revision info (for errata and feature handling) */ +#define BMAN_REV10 0x0100 +#define BMAN_REV20 0x0200 +#define BMAN_REV21 0x0201 +#define QBMAN_ANY_PORTAL_IDX 0xffffffff +extern u16 bman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */ + +/* + * Global variables of the max portal/pool number this bman version supported + */ +extern u16 bman_pool_max; + +/* used by CCSR and portal interrupt code */ +enum bm_isr_reg { + bm_isr_status = 0, + bm_isr_enable = 1, + bm_isr_disable = 2, + bm_isr_inhibit = 3 +}; + +struct bm_portal_config { + /* Corenet portal addresses; + * [0]==cache-enabled, [1]==cache-inhibited. */ + __iomem void *addr_virt[2]; + struct resource addr_phys[2]; + /* Allow these to be joined in lists */ + struct list_head list; + /* User-visible portal configuration settings */ + struct bman_portal_config public_cfg; + /* power management saved data */ + u32 saved_isdr; +}; + +#ifdef CONFIG_FSL_BMAN_CONFIG +/* Hooks from bman_driver.c to bman_config.c */ +int bman_init_ccsr(struct device_node *node); +#endif + +/* Hooks from bman_driver.c in to bman_high.c */ +struct bman_portal *bman_create_portal( + struct bman_portal *portal, + const struct bm_portal_config *config); +struct bman_portal *bman_create_affine_portal( + const struct bm_portal_config *config); +struct bman_portal *bman_create_affine_slave(struct bman_portal *redirect, + int cpu); +void bman_destroy_portal(struct bman_portal *bm); + +const struct bm_portal_config *bman_destroy_affine_portal(void); + +/* Hooks from fsl_usdpaa.c to bman_driver.c */ +struct bm_portal_config *bm_get_unused_portal(void); +struct bm_portal_config *bm_get_unused_portal_idx(uint32_t idx); +void bm_put_unused_portal(struct bm_portal_config *pcfg); +void bm_set_liodns(struct bm_portal_config *pcfg); + +/* Pool logic in the portal driver, during initialisation, needs to know if + * there's access to CCSR or not (if not, it'll cripple the pool allocator). */ +#ifdef CONFIG_FSL_BMAN_CONFIG +int bman_have_ccsr(void); +#else +#define bman_have_ccsr() 0 +#endif + +/* Stockpile build constants. The _LOW value: when bman_acquire() is called and + * the stockpile fill-level is <= _LOW, an acquire is attempted from h/w but it + * might fail (if the buffer pool is depleted). So this value provides some + * "stagger" in that the bman_acquire() function will only fail if lots of bufs + * are requested at once or if h/w has been tested a couple of times without + * luck. The _HIGH value: when bman_release() is called and the stockpile + * fill-level is >= _HIGH, a release is attempted to h/w but it might fail (if + * the release ring is full). So this value provides some "stagger" so that + * ring-access is retried a couple of times prior to the API returning a + * failure. The following *must* be true; + * BMAN_STOCKPILE_HIGH-BMAN_STOCKPILE_LOW > 8 + * (to avoid thrashing) + * BMAN_STOCKPILE_SZ >= 16 + * (as the release logic expects to either send 8 buffers to hw prior to + * adding the given buffers to the stockpile or add the buffers to the + * stockpile before sending 8 to hw, as the API must be an all-or-nothing + * success/fail.) + */ +#define BMAN_STOCKPILE_SZ 16u /* number of bufs in per-pool cache */ +#define BMAN_STOCKPILE_LOW 2u /* when fill is <= this, acquire from hw */ +#define BMAN_STOCKPILE_HIGH 14u /* when fill is >= this, release to hw */ + +/*************************************************/ +/* BMan s/w corenet portal, low-level i/face */ +/*************************************************/ + +/* Used by all portal interrupt registers except 'inhibit' + * This mask contains all the "irqsource" bits visible to API users + */ +#define BM_PIRQ_VISIBLE (BM_PIRQ_RCRI | BM_PIRQ_BSCN) + +/* These are bm_<reg>_<verb>(). So for example, bm_disable_write() means "write + * the disable register" rather than "disable the ability to write". */ +#define bm_isr_status_read(bm) __bm_isr_read(bm, bm_isr_status) +#define bm_isr_status_clear(bm, m) __bm_isr_write(bm, bm_isr_status, m) +#define bm_isr_enable_read(bm) __bm_isr_read(bm, bm_isr_enable) +#define bm_isr_enable_write(bm, v) __bm_isr_write(bm, bm_isr_enable, v) +#define bm_isr_disable_read(bm) __bm_isr_read(bm, bm_isr_disable) +#define bm_isr_disable_write(bm, v) __bm_isr_write(bm, bm_isr_disable, v) +#define bm_isr_inhibit(bm) __bm_isr_write(bm, bm_isr_inhibit, 1) +#define bm_isr_uninhibit(bm) __bm_isr_write(bm, bm_isr_inhibit, 0) + +#ifdef CONFIG_FSL_BMAN_CONFIG +/* Set depletion thresholds associated with a buffer pool. Requires that the + * operating system have access to Bman CCSR (ie. compiled in support and + * run-time access courtesy of the device-tree). */ +int bm_pool_set(u32 bpid, const u32 *thresholds); +#define BM_POOL_THRESH_SW_ENTER 0 +#define BM_POOL_THRESH_SW_EXIT 1 +#define BM_POOL_THRESH_HW_ENTER 2 +#define BM_POOL_THRESH_HW_EXIT 3 + +/* Read the free buffer count for a given buffer */ +u32 bm_pool_free_buffers(u32 bpid); + +__init int bman_init(void); +__init int bman_resource_init(void); + +const struct bm_portal_config *bman_get_bm_portal_config( + struct bman_portal *portal); + +/* power management */ +#ifdef CONFIG_SUSPEND +void suspend_unused_bportal(void); +void resume_unused_bportal(void); +#endif + +#endif /* CONFIG_FSL_BMAN_CONFIG */ |