From 559176415cc663fff9dd99a3862629a4fcdb36ab Mon Sep 17 00:00:00 2001 From: Jingchang Lu Date: Fri, 13 Mar 2015 10:52:32 +0200 Subject: [PATCH] gianfar: Consider dts property endianess on handling Use of_property_read*() to get arch endian consistent property values. Do some refactoring in the process. Signed-off-by: Jingchang Lu Signed-off-by: Claudiu Manoil Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/gianfar.c | 77 +++++++++++++++--------- 1 file changed, 47 insertions(+), 30 deletions(-) diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 5d6883dd01ef..70fa6887f940 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -697,19 +697,28 @@ static int gfar_parse_group(struct device_node *np, grp->priv = priv; spin_lock_init(&grp->grplock); if (priv->mode == MQ_MG_MODE) { - u32 *rxq_mask, *txq_mask; - rxq_mask = (u32 *)of_get_property(np, "fsl,rx-bit-map", NULL); - txq_mask = (u32 *)of_get_property(np, "fsl,tx-bit-map", NULL); + u32 rxq_mask, txq_mask; + int ret; + + grp->rx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); + grp->tx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); + + ret = of_property_read_u32(np, "fsl,rx-bit-map", &rxq_mask); + if (!ret) { + grp->rx_bit_map = rxq_mask ? + rxq_mask : (DEFAULT_MAPPING >> priv->num_grps); + } + + ret = of_property_read_u32(np, "fsl,tx-bit-map", &txq_mask); + if (!ret) { + grp->tx_bit_map = txq_mask ? + txq_mask : (DEFAULT_MAPPING >> priv->num_grps); + } if (priv->poll_mode == GFAR_SQ_POLLING) { /* One Q per interrupt group: Q0 to G0, Q1 to G1 */ grp->rx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); grp->tx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); - } else { /* GFAR_MQ_POLLING */ - grp->rx_bit_map = rxq_mask ? - *rxq_mask : (DEFAULT_MAPPING >> priv->num_grps); - grp->tx_bit_map = txq_mask ? - *txq_mask : (DEFAULT_MAPPING >> priv->num_grps); } } else { grp->rx_bit_map = 0xFF; @@ -770,11 +779,10 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) struct gfar_private *priv = NULL; struct device_node *np = ofdev->dev.of_node; struct device_node *child = NULL; - const u32 *stash; - const u32 *stash_len; - const u32 *stash_idx; + struct property *stash; + u32 stash_len = 0; + u32 stash_idx = 0; unsigned int num_tx_qs, num_rx_qs; - u32 *tx_queues, *rx_queues; unsigned short mode, poll_mode; if (!np) @@ -788,10 +796,6 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) poll_mode = GFAR_SQ_POLLING; } - /* parse the num of HW tx and rx queues */ - tx_queues = (u32 *)of_get_property(np, "fsl,num_tx_queues", NULL); - rx_queues = (u32 *)of_get_property(np, "fsl,num_rx_queues", NULL); - if (mode == SQ_SG_MODE) { num_tx_qs = 1; num_rx_qs = 1; @@ -810,8 +814,17 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) num_tx_qs = num_grps; /* one txq per int group */ num_rx_qs = num_grps; /* one rxq per int group */ } else { /* GFAR_MQ_POLLING */ - num_tx_qs = tx_queues ? *tx_queues : 1; - num_rx_qs = rx_queues ? *rx_queues : 1; + u32 tx_queues, rx_queues; + int ret; + + /* parse the num of HW tx and rx queues */ + ret = of_property_read_u32(np, "fsl,num_tx_queues", + &tx_queues); + num_tx_qs = ret ? 1 : tx_queues; + + ret = of_property_read_u32(np, "fsl,num_rx_queues", + &rx_queues); + num_rx_qs = ret ? 1 : rx_queues; } } @@ -852,13 +865,17 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) if (err) goto rx_alloc_failed; + err = of_property_read_string(np, "model", &model); + if (err) { + pr_err("Device model property missing, aborting\n"); + goto rx_alloc_failed; + } + /* Init Rx queue filer rule set linked list */ INIT_LIST_HEAD(&priv->rx_list.list); priv->rx_list.count = 0; mutex_init(&priv->rx_queue_access); - model = of_get_property(np, "model", NULL); - for (i = 0; i < MAXGROUPS; i++) priv->gfargrp[i].regs = NULL; @@ -878,22 +895,22 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) goto err_grp_init; } - stash = of_get_property(np, "bd-stash", NULL); + stash = of_find_property(np, "bd-stash", NULL); if (stash) { priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING; priv->bd_stash_en = 1; } - stash_len = of_get_property(np, "rx-stash-len", NULL); + err = of_property_read_u32(np, "rx-stash-len", &stash_len); - if (stash_len) - priv->rx_stash_size = *stash_len; + if (err == 0) + priv->rx_stash_size = stash_len; - stash_idx = of_get_property(np, "rx-stash-idx", NULL); + err = of_property_read_u32(np, "rx-stash-idx", &stash_idx); - if (stash_idx) - priv->rx_stash_index = *stash_idx; + if (err == 0) + priv->rx_stash_index = stash_idx; if (stash_len || stash_idx) priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING; @@ -920,15 +937,15 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) FSL_GIANFAR_DEV_HAS_EXTENDED_HASH | FSL_GIANFAR_DEV_HAS_TIMER; - ctype = of_get_property(np, "phy-connection-type", NULL); + err = of_property_read_string(np, "phy-connection-type", &ctype); /* We only care about rgmii-id. The rest are autodetected */ - if (ctype && !strcmp(ctype, "rgmii-id")) + if (err == 0 && !strcmp(ctype, "rgmii-id")) priv->interface = PHY_INTERFACE_MODE_RGMII_ID; else priv->interface = PHY_INTERFACE_MODE_MII; - if (of_get_property(np, "fsl,magic-packet", NULL)) + if (of_find_property(np, "fsl,magic-packet", NULL)) priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET; priv->phy_node = of_parse_phandle(np, "phy-handle", 0);