Date: Thu, 1 Mar 2018 06:20:17 +0000 (UTC) From: Eitan Adler <eadler@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r330191 - stable/11/sys/dev/iwm Message-ID: <201803010620.w216KHf1047553@repo.freebsd.org>
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Author: eadler Date: Thu Mar 1 06:20:16 2018 New Revision: 330191 URL: https://svnweb.freebsd.org/changeset/base/330191 Log: MFC r314082: [iwm] Move iwm_dma_contig_alloc/_free functions to if_iwm_util.c. Modified: stable/11/sys/dev/iwm/if_iwm.c stable/11/sys/dev/iwm/if_iwm_util.c stable/11/sys/dev/iwm/if_iwm_util.h Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/iwm/if_iwm.c ============================================================================== --- stable/11/sys/dev/iwm/if_iwm.c Thu Mar 1 06:19:53 2018 (r330190) +++ stable/11/sys/dev/iwm/if_iwm.c Thu Mar 1 06:20:16 2018 (r330191) @@ -239,10 +239,6 @@ static int iwm_firmware_store_section(struct iwm_softc static int iwm_set_default_calib(struct iwm_softc *, const void *); static void iwm_fw_info_free(struct iwm_fw_info *); static int iwm_read_firmware(struct iwm_softc *, enum iwm_ucode_type); -static void iwm_dma_map_addr(void *, bus_dma_segment_t *, int, int); -static int iwm_dma_contig_alloc(bus_dma_tag_t, struct iwm_dma_info *, - bus_size_t, bus_size_t); -static void iwm_dma_contig_free(struct iwm_dma_info *); static int iwm_alloc_fwmem(struct iwm_softc *); static int iwm_alloc_sched(struct iwm_softc *); static int iwm_alloc_kw(struct iwm_softc *); @@ -892,71 +888,6 @@ iwm_read_firmware(struct iwm_softc *sc, enum iwm_ucode /* * DMA resource routines */ - -static void -iwm_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) -{ - if (error != 0) - return; - KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); - *(bus_addr_t *)arg = segs[0].ds_addr; -} - -static int -iwm_dma_contig_alloc(bus_dma_tag_t tag, struct iwm_dma_info *dma, - bus_size_t size, bus_size_t alignment) -{ - int error; - - dma->tag = NULL; - dma->map = NULL; - dma->size = size; - dma->vaddr = NULL; - - error = bus_dma_tag_create(tag, alignment, - 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, - 1, size, 0, NULL, NULL, &dma->tag); - if (error != 0) - goto fail; - - error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, - BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); - if (error != 0) - goto fail; - - error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, - iwm_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); - if (error != 0) { - bus_dmamem_free(dma->tag, dma->vaddr, dma->map); - dma->vaddr = NULL; - goto fail; - } - - bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); - - return 0; - -fail: - iwm_dma_contig_free(dma); - - return error; -} - -static void -iwm_dma_contig_free(struct iwm_dma_info *dma) -{ - if (dma->vaddr != NULL) { - bus_dmamap_sync(dma->tag, dma->map, - BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); - bus_dmamap_unload(dma->tag, dma->map); - bus_dmamem_free(dma->tag, dma->vaddr, dma->map); - dma->vaddr = NULL; - } - if (dma->tag != NULL) { - bus_dma_tag_destroy(dma->tag); - dma->tag = NULL; - } -} /* fwmem is used to load firmware onto the card */ static int Modified: stable/11/sys/dev/iwm/if_iwm_util.c ============================================================================== --- stable/11/sys/dev/iwm/if_iwm_util.c Thu Mar 1 06:19:53 2018 (r330190) +++ stable/11/sys/dev/iwm/if_iwm_util.c Thu Mar 1 06:20:16 2018 (r330191) @@ -421,3 +421,68 @@ iwm_free_resp(struct iwm_softc *sc, struct iwm_host_cm sc->sc_wantresp = -1; wakeup(&sc->sc_wantresp); } + +static void +iwm_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) +{ + if (error != 0) + return; + KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); + *(bus_addr_t *)arg = segs[0].ds_addr; +} + +int +iwm_dma_contig_alloc(bus_dma_tag_t tag, struct iwm_dma_info *dma, + bus_size_t size, bus_size_t alignment) +{ + int error; + + dma->tag = NULL; + dma->map = NULL; + dma->size = size; + dma->vaddr = NULL; + + error = bus_dma_tag_create(tag, alignment, + 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, + 1, size, 0, NULL, NULL, &dma->tag); + if (error != 0) + goto fail; + + error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, + BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); + if (error != 0) + goto fail; + + error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, + iwm_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); + if (error != 0) { + bus_dmamem_free(dma->tag, dma->vaddr, dma->map); + dma->vaddr = NULL; + goto fail; + } + + bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); + + return 0; + +fail: + iwm_dma_contig_free(dma); + + return error; +} + +void +iwm_dma_contig_free(struct iwm_dma_info *dma) +{ + if (dma->vaddr != NULL) { + bus_dmamap_sync(dma->tag, dma->map, + BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(dma->tag, dma->map); + bus_dmamem_free(dma->tag, dma->vaddr, dma->map); + dma->vaddr = NULL; + } + if (dma->tag != NULL) { + bus_dma_tag_destroy(dma->tag); + dma->tag = NULL; + } +} Modified: stable/11/sys/dev/iwm/if_iwm_util.h ============================================================================== --- stable/11/sys/dev/iwm/if_iwm_util.h Thu Mar 1 06:19:53 2018 (r330190) +++ stable/11/sys/dev/iwm/if_iwm_util.h Thu Mar 1 06:20:16 2018 (r330191) @@ -116,6 +116,10 @@ extern int iwm_mvm_send_cmd_pdu_status(struct iwm_soft uint16_t len, const void *data, uint32_t *status); extern void iwm_free_resp(struct iwm_softc *sc, struct iwm_host_cmd *hcmd); +extern int iwm_dma_contig_alloc(bus_dma_tag_t tag, struct iwm_dma_info *dma, + bus_size_t size, bus_size_t alignment); +extern void iwm_dma_contig_free(struct iwm_dma_info *); + static inline uint8_t iwm_mvm_get_valid_tx_ant(struct iwm_softc *sc) {
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