Date: Sat, 28 Oct 2017 17:06:13 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r325055 - head/sys/dev/ffec Message-ID: <201710281706.v9SH6DBU060983@repo.freebsd.org>
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Author: ian Date: Sat Oct 28 17:06:13 2017 New Revision: 325055 URL: https://svnweb.freebsd.org/changeset/base/325055 Log: Add FECFLAG_AVB variant flag to support new features on imx7. This flag is analogous to the Linux driver FEC_QUIRK_HAS_AVB. It indicates an FEC with support for Audio Video Bridging (AVB). This indicator is used for various other parts in the Linux driver (drivers/net/ethernet/freescale/fec_main.c). Use it to customize the receive/transmit buffer alignment. The receive buffer alignment increased to 64-bytes on the i.MX 6SoloX and i.MX 7Dual. There are no hard alignment restrictions for transmit buffers on these chips. Fix the ffec_softc::fectype type to provide enough storage for the feature flags. PR: 222634 Submitted by: sebastian.huber@embedded-brains.de Modified: head/sys/dev/ffec/if_ffec.c head/sys/dev/ffec/if_ffecreg.h Modified: head/sys/dev/ffec/if_ffec.c ============================================================================== --- head/sys/dev/ffec/if_ffec.c Sat Oct 28 16:50:23 2017 (r325054) +++ head/sys/dev/ffec/if_ffec.c Sat Oct 28 17:06:13 2017 (r325055) @@ -97,7 +97,7 @@ enum { FECTYPE_NONE, FECTYPE_GENERIC, FECTYPE_IMX53, - FECTYPE_IMX6, + FECTYPE_IMX6, /* imx6 and imx7 */ FECTYPE_MVF, }; @@ -106,7 +106,8 @@ enum { * SoCs. These are ORed into the FECTYPE enum values. */ #define FECTYPE_MASK 0x0000ffff -#define FECFLAG_GBE (0x0001 << 16) +#define FECFLAG_GBE (1 << 16) +#define FECFLAG_AVB (1 << 17) /* * Table of supported FDT compat strings and their associated FECTYPE values. @@ -116,6 +117,7 @@ static struct ofw_compat_data compat_data[] = { {"fsl,imx53-fec", FECTYPE_IMX53}, {"fsl,imx6q-fec", FECTYPE_IMX6 | FECFLAG_GBE}, {"fsl,imx6ul-fec", FECTYPE_IMX6}, + {"fsl,imx7d-fec", FECTYPE_IMX6 | FECFLAG_GBE | FECFLAG_AVB}, {"fsl,mvf600-fec", FECTYPE_MVF}, {"fsl,mvf-fec", FECTYPE_MVF}, {NULL, FECTYPE_NONE}, @@ -148,11 +150,13 @@ struct ffec_softc { void * intr_cookie; struct callout ffec_callout; mii_contype_t phy_conn_type; - uint8_t fectype; + uintptr_t fectype; boolean_t link_is_up; boolean_t is_attached; boolean_t is_detaching; int tx_watchdog_count; + int rxbuf_align; + int txbuf_align; bus_dma_tag_t rxdesc_tag; bus_dmamap_t rxdesc_map; @@ -754,7 +758,7 @@ ffec_setup_rxbuf(struct ffec_softc *sc, int idx, struc * have to ensure that the beginning of the buffer is aligned to the * hardware's requirements. */ - m_adj(m, roundup(ETHER_ALIGN, FEC_RXBUF_ALIGN)); + m_adj(m, roundup(ETHER_ALIGN, sc->rxbuf_align)); error = bus_dmamap_load_mbuf_sg(sc->rxbuf_tag, sc->rxbuf_map[idx].map, m, &seg, &nsegs, 0); @@ -1098,7 +1102,7 @@ ffec_init_locked(struct ffec_softc *sc) * when we support jumbo frames and receiving fragments of them into * separate buffers. */ - maxbuf = MCLBYTES - roundup(ETHER_ALIGN, FEC_RXBUF_ALIGN); + maxbuf = MCLBYTES - roundup(ETHER_ALIGN, sc->rxbuf_align); maxfl = min(maxbuf, 0x7ff); if (ifp->if_drv_flags & IFF_DRV_RUNNING) @@ -1450,6 +1454,14 @@ ffec_attach(device_t dev) */ sc->fectype = ofw_bus_search_compatible(dev, compat_data)->ocd_data; + if (sc->fectype & FECFLAG_AVB) { + sc->rxbuf_align = 64; + sc->txbuf_align = 1; + } else { + sc->rxbuf_align = 16; + sc->txbuf_align = 16; + } + /* * We have to be told what kind of electrical connection exists between * the MAC and PHY or we can't operate correctly. @@ -1525,7 +1537,7 @@ ffec_attach(device_t dev) error = bus_dma_tag_create( bus_get_dma_tag(dev), /* Parent tag. */ - FEC_TXBUF_ALIGN, 0, /* alignment, boundary */ + sc->txbuf_align, 0, /* alignment, boundary */ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ Modified: head/sys/dev/ffec/if_ffecreg.h ============================================================================== --- head/sys/dev/ffec/if_ffecreg.h Sat Oct 28 16:50:23 2017 (r325054) +++ head/sys/dev/ffec/if_ffecreg.h Sat Oct 28 17:06:13 2017 (r325055) @@ -318,7 +318,5 @@ struct ffec_hwdesc * DMA transfers. These values are expressed in bytes (not bits). */ #define FEC_DESC_RING_ALIGN 64 -#define FEC_RXBUF_ALIGN 16 -#define FEC_TXBUF_ALIGN 16 #endif /* IF_FFECREG_H */
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