From patchwork Wed Jan 17 16:15:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Diogo Ivo X-Patchwork-Id: 13522000 X-Patchwork-Delegate: kuba@kernel.org Received: from mta-64-226.siemens.flowmailer.net (mta-64-226.siemens.flowmailer.net [185.136.64.226]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CFF2522EE5 for ; Wed, 17 Jan 2024 16:16:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.136.64.226 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705508185; cv=none; b=gzs0g7yA/7DSoZIddWktbm3wfAKMNLXoir9R48FuwVIXpj40dUSuY1DhMBqOwR1ZxkAO1HGreHpsvz+SRMYua4+XS6ooZiYViAaGa9KyORaOlzkzvKUINGuTlRvjdzkHei1BHmvDfR9DwOfdoxX02KKI+fDhZgOcg0DFR4IKPJg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705508185; c=relaxed/simple; bh=wUn/ifBBqYaaY/Anp1WMHkIrJSvlwlsgF3cQjps8nS8=; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding: X-Flowmailer-Platform:Feedback-ID; b=sTY9GPZGyEcK/B30eyDIAJTKTOr4iU6rRFLIzqxGjkcprHwqFsUvAsWM33feQyYSVm/H4kbanb5tE4Pk+PnDM0cwcOMmNYrZZFa8IZu/bwTa/OrZlYiEYAlhXCWsYbqn3qwOfMX+xvYn45uLMRLvfvDh7xb2qUTu/E3gKy23scM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=siemens.com; spf=pass smtp.mailfrom=rts-flowmailer.siemens.com; dkim=pass (1024-bit key) header.d=siemens.com header.i=diogo.ivo@siemens.com header.b=AV6fFSL1; arc=none smtp.client-ip=185.136.64.226 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=siemens.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rts-flowmailer.siemens.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=siemens.com header.i=diogo.ivo@siemens.com header.b="AV6fFSL1" Received: by mta-64-226.siemens.flowmailer.net with ESMTPSA id 20240117161623f2db75faac4e1b1085 for ; Wed, 17 Jan 2024 17:16:23 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=fm1; d=siemens.com; i=diogo.ivo@siemens.com; h=Date:From:Subject:To:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Cc:References:In-Reply-To; bh=EEwZrH5Feku4V3FDACLnjgOFKj5BNY9868YFvEGGx/w=; b=AV6fFSL1c3mAYsYNlZm1SHUJ0+VwViX0QiolCnjJoJlIM+561gmi1HLW3kWMjJcKzYgeRq w+b8Iy+p1t1WDJPZQc8pJS9EIJRIYTaWdbWm0pZibRD1WtLXo05diA3wMwVyA5pUMdyz5zrX cvhMec6rHZ/VlZydq4E4wslq8w7Ac=; From: Diogo Ivo To: danishanwar@ti.com, rogerq@kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew@lunn.ch, dan.carpenter@linaro.org, robh@kernel.org, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org Cc: Diogo Ivo , Jan Kiszka Subject: [PATCH v2 7/8] net: ti: iccsg-prueth: Add necessary functions for SR1.0 support Date: Wed, 17 Jan 2024 16:15:01 +0000 Message-ID: <20240117161602.153233-8-diogo.ivo@siemens.com> In-Reply-To: <20240117161602.153233-1-diogo.ivo@siemens.com> References: <20240117161602.153233-1-diogo.ivo@siemens.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-1320519:519-21489:flowmailer X-Patchwork-Delegate: kuba@kernel.org Add functions required to correctly program the SR1.0 firmware for network operation. Based on the work of Roger Quadros, Vignesh Raghavendra and Grygorii Strashko in TI's 5.10 SDK [1]. [1]: https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/?h=ti-linux-5.10.y Co-developed-by: Jan Kiszka Signed-off-by: Jan Kiszka Signed-off-by: Diogo Ivo --- drivers/net/ethernet/ti/icssg/icssg_prueth.c | 255 +++++++++++++++++++ 1 file changed, 255 insertions(+) diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 5ec2cdc16c51..db15c8680741 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -616,6 +616,101 @@ static int emac_get_tx_ts(struct prueth_emac *emac, return 0; } +static int emac_send_command_sr1(struct prueth_emac *emac, u32 cmd) +{ + dma_addr_t desc_dma, buf_dma; + struct prueth_tx_chn *tx_chn; + struct cppi5_host_desc_t *first_desc; + u32 *data = emac->cmd_data; + u32 pkt_len = sizeof(emac->cmd_data); + void **swdata; + int ret = 0; + u32 *epib; + + netdev_dbg(emac->ndev, "Sending cmd %x\n", cmd); + + /* only one command at a time allowed to firmware */ + mutex_lock(&emac->cmd_lock); + data[0] = cpu_to_le32(cmd); + + /* highest priority channel for management messages */ + tx_chn = &emac->tx_chns[emac->tx_ch_num - 1]; + + /* Map the linear buffer */ + buf_dma = dma_map_single(tx_chn->dma_dev, data, pkt_len, DMA_TO_DEVICE); + if (dma_mapping_error(tx_chn->dma_dev, buf_dma)) { + netdev_err(emac->ndev, "cmd %x: failed to map cmd buffer\n", cmd); + ret = -EINVAL; + goto err_unlock; + } + + first_desc = k3_cppi_desc_pool_alloc(tx_chn->desc_pool); + if (!first_desc) { + netdev_err(emac->ndev, "cmd %x: failed to allocate descriptor\n", cmd); + dma_unmap_single(tx_chn->dma_dev, buf_dma, pkt_len, DMA_TO_DEVICE); + ret = -ENOMEM; + goto err_unlock; + } + + cppi5_hdesc_init(first_desc, CPPI5_INFO0_HDESC_EPIB_PRESENT, + PRUETH_NAV_PS_DATA_SIZE); + cppi5_hdesc_set_pkttype(first_desc, PRUETH_PKT_TYPE_CMD); + epib = first_desc->epib; + epib[0] = 0; + epib[1] = 0; + + cppi5_hdesc_attach_buf(first_desc, buf_dma, pkt_len, buf_dma, pkt_len); + swdata = cppi5_hdesc_get_swdata(first_desc); + *swdata = data; + + cppi5_hdesc_set_pktlen(first_desc, pkt_len); + desc_dma = k3_cppi_desc_pool_virt2dma(tx_chn->desc_pool, first_desc); + + /* send command */ + reinit_completion(&emac->cmd_complete); + ret = k3_udma_glue_push_tx_chn(tx_chn->tx_chn, first_desc, desc_dma); + if (ret) { + netdev_err(emac->ndev, "cmd %x: push failed: %d\n", cmd, ret); + goto free_desc; + } + ret = wait_for_completion_timeout(&emac->cmd_complete, msecs_to_jiffies(100)); + if (!ret) + netdev_err(emac->ndev, "cmd %x: completion timeout\n", cmd); + + mutex_unlock(&emac->cmd_lock); + + return ret; +free_desc: + prueth_xmit_free(tx_chn, first_desc); +err_unlock: + mutex_unlock(&emac->cmd_lock); + + return ret; +} + +static void emac_change_port_speed_duplex_sr1(struct prueth_emac *emac) +{ + u32 cmd = ICSSG_PSTATE_SPEED_DUPLEX_CMD, val; + struct prueth *prueth = emac->prueth; + int slice = prueth_emac_slice(emac); + + /* only full duplex supported for now */ + if (emac->duplex != DUPLEX_FULL) + return; + + val = icssg_rgmii_get_speed(prueth->miig_rt, slice); + /* firmware expects full duplex settings in bit 2-1 */ + val <<= 1; + cmd |= val; + + val = icssg_rgmii_get_fullduplex(prueth->miig_rt, slice); + /* firmware expects full duplex settings in bit 3 */ + val <<= 3; + cmd |= val; + + emac_send_command_sr1(emac, cmd); +} + static void tx_ts_work(struct prueth_emac *emac) { struct skb_shared_hwtstamps ssh; @@ -873,6 +968,141 @@ static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id) return IRQ_HANDLED; } +/* get one packet from requested flow_id + * + * Returns skb pointer if packet found else NULL + * Caller must free the returned skb. + */ +static struct sk_buff *prueth_process_rx_mgm(struct prueth_emac *emac, + u32 flow_id) +{ + struct prueth_rx_chn *rx_chn = &emac->rx_mgm_chn; + struct net_device *ndev = emac->ndev; + struct cppi5_host_desc_t *desc_rx; + struct sk_buff *skb, *new_skb; + dma_addr_t desc_dma, buf_dma; + u32 buf_dma_len, pkt_len; + void **swdata; + int ret; + + ret = k3_udma_glue_pop_rx_chn(rx_chn->rx_chn, flow_id, &desc_dma); + if (ret) { + if (ret != -ENODATA) + netdev_err(ndev, "rx mgm pop: failed: %d\n", ret); + return NULL; + } + + if (cppi5_desc_is_tdcm(desc_dma)) /* Teardown */ + return NULL; + + desc_rx = k3_cppi_desc_pool_dma2virt(rx_chn->desc_pool, desc_dma); + + /* Fix FW bug about incorrect PSDATA size */ + if (cppi5_hdesc_get_psdata_size(desc_rx) != PRUETH_NAV_PS_DATA_SIZE) { + cppi5_hdesc_update_psdata_size(desc_rx, + PRUETH_NAV_PS_DATA_SIZE); + } + + swdata = cppi5_hdesc_get_swdata(desc_rx); + skb = *swdata; + cppi5_hdesc_get_obuf(desc_rx, &buf_dma, &buf_dma_len); + pkt_len = cppi5_hdesc_get_pktlen(desc_rx); + + dma_unmap_single(rx_chn->dma_dev, buf_dma, buf_dma_len, DMA_FROM_DEVICE); + k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); + + new_skb = netdev_alloc_skb_ip_align(ndev, PRUETH_MAX_PKT_SIZE); + /* if allocation fails we drop the packet but push the + * descriptor back to the ring with old skb to prevent a stall + */ + if (!new_skb) { + netdev_err(ndev, + "skb alloc failed, dropped mgm pkt from flow %d\n", + flow_id); + new_skb = skb; + skb = NULL; /* return NULL */ + } else { + /* return the filled skb */ + skb_put(skb, pkt_len); + } + + /* queue another DMA */ + ret = prueth_dma_rx_push(emac, new_skb, &emac->rx_mgm_chn); + if (WARN_ON(ret < 0)) + dev_kfree_skb_any(new_skb); + + return skb; +} + +static void prueth_tx_ts_sr1(struct prueth_emac *emac, + struct emac_tx_ts_response_sr1 *tsr) +{ + u64 ns; + struct skb_shared_hwtstamps ssh; + struct sk_buff *skb; + + ns = (u64)tsr->hi_ts << 32 | tsr->lo_ts; + + if (tsr->cookie >= PRUETH_MAX_TX_TS_REQUESTS) { + netdev_dbg(emac->ndev, "Invalid TX TS cookie 0x%x\n", + tsr->cookie); + return; + } + + skb = emac->tx_ts_skb[tsr->cookie]; + emac->tx_ts_skb[tsr->cookie] = NULL; /* free slot */ + + memset(&ssh, 0, sizeof(ssh)); + ssh.hwtstamp = ns_to_ktime(ns); + + skb_tstamp_tx(skb, &ssh); + dev_consume_skb_any(skb); +} + +static irqreturn_t prueth_rx_mgm_ts_thread_sr1(int irq, void *dev_id) +{ + struct prueth_emac *emac = dev_id; + struct sk_buff *skb; + + skb = prueth_process_rx_mgm(emac, PRUETH_RX_MGM_FLOW_TIMESTAMP); + if (!skb) + return IRQ_NONE; + + prueth_tx_ts_sr1(emac, (void *)skb->data); + dev_kfree_skb_any(skb); + + return IRQ_HANDLED; +} + +static irqreturn_t prueth_rx_mgm_rsp_thread(int irq, void *dev_id) +{ + struct prueth_emac *emac = dev_id; + struct sk_buff *skb; + u32 rsp; + + skb = prueth_process_rx_mgm(emac, PRUETH_RX_MGM_FLOW_RESPONSE); + if (!skb) + return IRQ_NONE; + + /* Process command response */ + rsp = le32_to_cpu(*(u32 *)skb->data); + if ((rsp & 0xffff0000) == ICSSG_SHUTDOWN_CMD) { + netdev_dbg(emac->ndev, + "f/w Shutdown cmd resp %x\n", rsp); + complete(&emac->cmd_complete); + } else if ((rsp & 0xffff0000) == + ICSSG_PSTATE_SPEED_DUPLEX_CMD) { + netdev_dbg(emac->ndev, + "f/w Speed/Duplex cmd rsp %x\n", + rsp); + complete(&emac->cmd_complete); + } + + dev_kfree_skb_any(skb); + + return IRQ_HANDLED; +} + static irqreturn_t prueth_rx_irq(int irq, void *dev_id) { struct prueth_emac *emac = dev_id; @@ -1517,6 +1747,31 @@ static void emac_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue) ndev->stats.tx_errors++; } +static void emac_ndo_set_rx_mode_sr1(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + int slice = prueth_emac_slice(emac); + bool promisc = ndev->flags & IFF_PROMISC; + bool allmulti = ndev->flags & IFF_ALLMULTI; + + if (promisc) { + icssg_class_promiscuous_sr1(prueth->miig_rt, slice); + return; + } + + if (allmulti) { + icssg_class_default(prueth->miig_rt, slice, 1, true); + return; + } + + icssg_class_default(prueth->miig_rt, slice, 0, true); + if (!netdev_mc_empty(ndev)) { + /* program multicast address list into Classifier */ + icssg_class_add_mcast_sr1(prueth->miig_rt, slice, ndev); + } +} + static void emac_ndo_set_rx_mode_work(struct work_struct *work) { struct prueth_emac *emac = container_of(work, struct prueth_emac, rx_mode_work);