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b=nkjpfeD1NrlyznWG1s4dpWYU0knd/9uazEY/jrjGtdM0jdYIc61Xhbag4hEliGnyI STJL8HAK46Z6jVb3nKduhgGd/FzatvD1mTX3A8e2+tatR+0SWnYswGIS+8w1dqrdOH TILdnV2QXTcgHDkX2GVeQnMO9sT2zcOejFbPOzVU= Authentication-Results: mxback18j.mail.yandex.net; dkim=pass header.i=@maquefel.me Received: by iva6-add863d6e49c.qloud-c.yandex.net (smtp/Yandex) with ESMTPSA id CHTIIrjdik-WF2uGgoU; Mon, 06 Apr 2020 14:32:15 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) From: nikita.shubin@maquefel.me To: nikita.shubin@maquefel.me Subject: [PATCH v2 3/3] remoteproc: imx_rproc: memory regions Date: Mon, 6 Apr 2020 14:33:10 +0300 Message-Id: <20200406113310.3041-4-nikita.shubin@maquefel.me> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200406113310.3041-1-nikita.shubin@maquefel.me> References: <20200304142628.8471-1-NShubin@topcon.com> <20200406113310.3041-1-nikita.shubin@maquefel.me> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200406_043222_178557_BC80E9B9 X-CRM114-Status: GOOD ( 16.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ohad Ben-Cohen , Fabio Estevam , Nikita Shubin , Sascha Hauer , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson , NXP Linux Team , Pengutronix Kernel Team , Shawn Guo , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for carveout memory regions required for vdev vring's and buffer. Search in device tree and allocate memory regions like for ocram: vdev0vring0: vdev0vring0@00920000 { compatible = "shared-dma-pool"; reg = <0x00920000 0x2000>; no-map; }; vdev0vring1: vdev0vring1@00922000 { compatible = "shared-dma-pool"; reg = <0x00922000 0x2000>; no-map; }; vdev0buffer: vdev0buffer@00924000 { compatible = "shared-dma-pool"; reg = <0x00924000 0x4000>; no-map; }; imx7d-cm4 { compatible = "fsl,imx7d-cm4"; memory-region = <&ocram>, <&vdev0vring0>, <&vdev0vring1>, \ <&vdev0buffer>; } vdev0vring0, vdev0vring1, vdev0buffer are required for virtio functioning. Signed-off-by: Nikita Shubin --- drivers/remoteproc/imx_rproc.c | 119 ++++++++++++++++++++++++++++++++- 1 file changed, 118 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index d2bede4ccb70..cdcff2bd2867 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -238,6 +239,29 @@ static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da, return -ENOENT; } +static int imx_rproc_sys_to_da(struct imx_rproc *priv, u64 sys, + int len, u64 *da) +{ + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + int i; + + /* parse address translation table */ + for (i = 0; i < dcfg->att_size; i++) { + const struct imx_rproc_att *att = &dcfg->att[i]; + + if (sys >= att->sa && sys + len <= att->sa + att->size) { + unsigned int offset = sys - att->sa; + + *da = att->da + offset; + return 0; + } + } + + dev_warn(priv->dev, "Translation failed: sys = 0x%llx len = 0x%x\n", + sys, len); + return -ENOENT; +} + static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, int len) { struct imx_rproc *priv = rproc->priv; @@ -372,16 +396,109 @@ static void imx_rproc_kick(struct rproc *rproc, int vqid) err = mbox_send_message(ddata->mb[i].chan, &vqid); if (err < 0) dev_err(&rproc->dev, "%s: failed (%s, err:%d)\n", - __func__, ddata->mb[i].name, err); + __func__, ddata->mb[i].name, err); return; } } +static int imx_rproc_mem_alloc(struct rproc *rproc, + struct rproc_mem_entry *mem) +{ + struct device *dev = rproc->dev.parent; + void *va; + + dev_dbg(dev, "map memory: %pa+%x\n", &mem->dma, mem->len); + va = ioremap_wc(mem->dma, mem->len); + if (IS_ERR_OR_NULL(va)) { + dev_err(dev, "Unable to map memory region: %pa+%x\n", + &mem->dma, mem->len); + return -ENOMEM; + } + + /* Update memory entry va */ + mem->va = va; + + return 0; +} + +static int imx_rproc_mem_release(struct rproc *rproc, + struct rproc_mem_entry *mem) +{ + dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma); + iounmap(mem->va); + + return 0; +} + +static int imx_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw) +{ + struct imx_rproc *priv = rproc->priv; + struct device *dev = rproc->dev.parent; + struct device_node *np = dev->of_node; + struct of_phandle_iterator it; + struct rproc_mem_entry *mem = 0; + struct reserved_mem *rmem; + u64 da; + int index = 0; + + /* Register associated reserved memory regions */ + of_phandle_iterator_init(&it, np, "memory-region", NULL, 0); + while (of_phandle_iterator_next(&it) == 0) { + rmem = of_reserved_mem_lookup(it.node); + if (!rmem) { + dev_err(dev, "unable to acquire memory-region\n"); + return -EINVAL; + } + + /* + * Let's assume all data in device tree is from + * CPU A7 point of view then we should translate + * rmem->base into M4 da + */ + if (imx_rproc_sys_to_da(priv, rmem->base, rmem->size, &da)) { + dev_err(dev, "memory region not valid %pa\n", + &rmem->base); + return -EINVAL; + } + + if (strcmp(it.node->name, "vdev0buffer")) { + /* Register memory region */ + mem = rproc_mem_entry_init(dev, NULL, + (dma_addr_t)rmem->base, + rmem->size, da, + imx_rproc_mem_alloc, + imx_rproc_mem_release, + it.node->name); + + if (mem) + rproc_coredump_add_segment(rproc, da, + rmem->size); + } else { + mem = rproc_of_resm_mem_entry_init(dev, index, + rmem->size, + rmem->base, + it.node->name); + } + + if (!mem) + return -ENOMEM; + + rproc_add_carveout(rproc, mem); + index++; + } + + return rproc_elf_load_rsc_table(rproc, fw); +} + static const struct rproc_ops imx_rproc_ops = { .start = imx_rproc_start, .stop = imx_rproc_stop, .da_to_va = imx_rproc_da_to_va, .kick = imx_rproc_kick, + .load = rproc_elf_load_segments, + .parse_fw = imx_rproc_parse_fw, + .find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table, + .sanity_check = rproc_elf_sanity_check, .get_boot_addr = rproc_elf_get_boot_addr, }; -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel