From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F084BC3ABCB for ; Mon, 16 Sep 2024 20:18:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wCVT0oaTpJwAkfKlj3fBo5y39+DFzdMmDPDb3iGj6JA=; b=08mrsyeSqT9Jkl k04mYZduGgfucCmNWM7LjCYV8HpHP6altYxCxZSk5NNFhqfEucj5BZDfBAVSPhfz98ZdeGiz0pTUd h0sYqKNe3P1ME537aX/ClpkbF69LTq0O2RcDP1QMsSYeoE740OoKEBTHFSoblp5J+vU6r0NGpZB7J 0mM6sL7a4xC0O0wsGABGsVFdQcrr3hQly6/QPdbcTh1KKmhTdgOpunnGiqrDhEQwpjeaRsDQXsIQv /a36J5g/V58b0yA8jsHoiAFkzm5BKowILn+2KWlig3XhHG46douVXMpRnij4wrK4cSZNoEPmJK3hi zU9dPC4XmUT6BdTaaHNg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1sqIB6-00000004pjS-112S; Mon, 16 Sep 2024 20:18:32 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1sqIB2-00000004pif-0xWA for linux-riscv@lists.infradead.org; Mon, 16 Sep 2024 20:18:30 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 73FF7A41E06; Mon, 16 Sep 2024 20:18:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 237BFC4CEC4; Mon, 16 Sep 2024 20:18:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1726517907; bh=u77P5jo7uS3KP9szkgannbMqAvqt8NPp8EYTzcJOPcw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=aF4VxTbNmH0/0wK+fzdswLiNQDB+zYGUmblw38h94Pv9VV8XK89sL+ys7Ux3yFKvo ag8V+TI8kZSCMCj3Hvh6ZWtTPKkKYx5GOOeaoXpsI7+hCFUdbHI8TlvLLHcovSNOGE BEsirEtTWp0I1/zaOsnS19RWHdw8kwhN5wYQSAqgKOcJ9FwzGIuHT6a9XNjt8rxI1q ydqidw8jIRyqFX3bfdzcZ6TcjyG5IFj/z47xaLZtW0PLscPk2LPHTY0lsxpt0r2OOJ 4WZn0EZUJb4f3KzwHxcheYw9FLwP6TaUrBGXrnWivqtgr0ooP9GQk3Q/e7wihOcT5g K3MXwtAX7BuCQ== Message-ID: <6f1fa401-e9ca-466f-990a-52bc37899bf4@kernel.org> Date: Mon, 16 Sep 2024 22:18:16 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 5/5] remoteproc: add support for Microchip IPC remoteproc platform driver To: Valentina Fernandez , paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, peterlin@andestech.com, dminus@andestech.com, conor.dooley@microchip.com, conor+dt@kernel.org, ycliang@andestech.com, jassisinghbrar@gmail.com, robh@kernel.org, krzk+dt@kernel.org, andersson@kernel.org, mathieu.poirier@linaro.org Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org References: <20240912170025.455167-1-valentina.fernandezalanis@microchip.com> <20240912170025.455167-6-valentina.fernandezalanis@microchip.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJgPO8PBQkUX63hAAoJEBuTQ307 QWKbBn8P+QFxwl7pDsAKR1InemMAmuykCHl+XgC0LDqrsWhAH5TYeTVXGSyDsuZjHvj+FRP+ gZaEIYSw2Yf0e91U9HXo3RYhEwSmxUQ4Fjhc9qAwGKVPQf6YuQ5yy6pzI8brcKmHHOGrB3tP /MODPt81M1zpograAC2WTDzkICfHKj8LpXp45PylD99J9q0Y+gb04CG5/wXs+1hJy/dz0tYy iua4nCuSRbxnSHKBS5vvjosWWjWQXsRKd+zzXp6kfRHHpzJkhRwF6ArXi4XnQ+REnoTfM5Fk VmVmSQ3yFKKePEzoIriT1b2sXO0g5QXOAvFqB65LZjXG9jGJoVG6ZJrUV1MVK8vamKoVbUEe 0NlLl/tX96HLowHHoKhxEsbFzGzKiFLh7hyboTpy2whdonkDxpnv/H8wE9M3VW/fPgnL2nPe xaBLqyHxy9hA9JrZvxg3IQ61x7rtBWBUQPmEaK0azW+l3ysiNpBhISkZrsW3ZUdknWu87nh6 eTB7mR7xBcVxnomxWwJI4B0wuMwCPdgbV6YDUKCuSgRMUEiVry10xd9KLypR9Vfyn1AhROrq AubRPVeJBf9zR5UW1trJNfwVt3XmbHX50HCcHdEdCKiT9O+FiEcahIaWh9lihvO0ci0TtVGZ MCEtaCE80Q3Ma9RdHYB3uVF930jwquplFLNF+IBCn5JRzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmA872oFCRRflLYACgkQG5NDfTtBYpvScw/9GrqBrVLuJoJ52qBBKUBDo4E+5fU1bjt0 Gv0nh/hNJuecuRY6aemU6HOPNc2t8QHMSvwbSF+Vp9ZkOvrM36yUOufctoqON+wXrliEY0J4 ksR89ZILRRAold9Mh0YDqEJc1HmuxYLJ7lnbLYH1oui8bLbMBM8S2Uo9RKqV2GROLi44enVt vdrDvo+CxKj2K+d4cleCNiz5qbTxPUW/cgkwG0lJc4I4sso7l4XMDKn95c7JtNsuzqKvhEVS oic5by3fbUnuI0cemeizF4QdtX2uQxrP7RwHFBd+YUia7zCcz0//rv6FZmAxWZGy5arNl6Vm lQqNo7/Poh8WWfRS+xegBxc6hBXahpyUKphAKYkah+m+I0QToCfnGKnPqyYIMDEHCS/RfqA5 t8F+O56+oyLBAeWX7XcmyM6TGeVfb+OZVMJnZzK0s2VYAuI0Rl87FBFYgULdgqKV7R7WHzwD uZwJCLykjad45hsWcOGk3OcaAGQS6NDlfhM6O9aYNwGL6tGt/6BkRikNOs7VDEa4/HlbaSJo 7FgndGw1kWmkeL6oQh7wBvYll2buKod4qYntmNKEicoHGU+x91Gcan8mCoqhJkbqrL7+nXG2 5Q/GS5M9RFWS+nYyJh+c3OcfKqVcZQNANItt7+ULzdNJuhvTRRdC3g9hmCEuNSr+CLMdnRBY fv0= In-Reply-To: <20240912170025.455167-6-valentina.fernandezalanis@microchip.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240916_131828_452558_1E6AB0BF X-CRM114-Status: GOOD ( 22.56 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On 12/09/2024 19:00, Valentina Fernandez wrote: > The Microchip family of RISC-V SoCs typically has one or more clusters. > These clusters can be configured to run in Asymmetric Multi-Processing > (AMP) mode. > > Add a remoteproc platform driver to be able to load and boot firmware > to the remote processor(s). ... > + > +static int mchp_ipc_rproc_prepare(struct rproc *rproc) > +{ > + struct mchp_ipc_rproc *priv = rproc->priv; > + struct device_node *np = priv->dev->of_node; > + struct rproc_mem_entry *mem; > + struct reserved_mem *rmem; > + struct of_phandle_iterator it; > + u64 device_address; > + > + reinit_completion(&priv->start_done); > + > + of_phandle_iterator_init(&it, np, "memory-region", NULL, 0); > + while (of_phandle_iterator_next(&it) == 0) { > + /* > + * Ignore the first memory region which will be used vdev > + * buffer. No need to do extra handlings, rproc_add_virtio_dev > + * will handle it. > + */ > + if (!strcmp(it.node->name, "vdev0buffer")) What? If you ignore the first, then why are you checking names? This does not make sense. Especially that your binding did not say anything about these phandles being somehow special. > + continue; > + > + if (!strcmp(it.node->name, "rsc-table")) Nope. > + continue; > + > + rmem = of_reserved_mem_lookup(it.node); > + if (!rmem) { > + of_node_put(it.node); > + dev_err(priv->dev, "unable to acquire memory-region\n"); > + return -EINVAL; > + } > + > + device_address = rmem->base; > + > + mem = rproc_mem_entry_init(priv->dev, NULL, (dma_addr_t)rmem->base, > + rmem->size, device_address, mchp_ipc_rproc_mem_alloc, > + mchp_ipc_rproc_mem_release, it.node->name); > + > + if (!mem) { > + of_node_put(it.node); > + return -ENOMEM; > + } > + > + rproc_add_carveout(rproc, mem); > + } > + > + return 0; > +} > + > +static int mchp_ipc_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw) > +{ > + int ret; > + > + ret = rproc_elf_load_rsc_table(rproc, fw); > + if (ret) > + dev_info(&rproc->dev, "No resource table in elf\n"); > + > + return 0; > +} > + > +static void mchp_ipc_rproc_kick(struct rproc *rproc, int vqid) > +{ > + struct mchp_ipc_rproc *priv = (struct mchp_ipc_rproc *)rproc->priv; > + struct mchp_ipc_msg msg; > + int ret; > + > + msg.buf = (void *)&vqid; > + msg.size = sizeof(vqid); > + > + ret = mbox_send_message(priv->mbox_channel, (void *)&msg); > + if (ret < 0) > + dev_err(priv->dev, > + "failed to send mbox message, status = %d\n", ret); > +} > + > +static int mchp_ipc_rproc_attach(struct rproc *rproc) > +{ > + return 0; > +} > + > +static struct resource_table > +*mchp_ipc_rproc_get_loaded_rsc_table(struct rproc *rproc, size_t *table_sz) > +{ > + struct mchp_ipc_rproc *priv = rproc->priv; > + > + if (!priv->rsc_table) > + return NULL; > + > + *table_sz = SZ_1K; > + return (struct resource_table *)priv->rsc_table; > +} > + > +static const struct rproc_ops mchp_ipc_rproc_ops = { > + .prepare = mchp_ipc_rproc_prepare, > + .start = mchp_ipc_rproc_start, > + .get_loaded_rsc_table = mchp_ipc_rproc_get_loaded_rsc_table, > + .attach = mchp_ipc_rproc_attach, > + .stop = mchp_ipc_rproc_stop, > + .kick = mchp_ipc_rproc_kick, > + .load = rproc_elf_load_segments, > + .parse_fw = mchp_ipc_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, > +}; > + > +static int mchp_ipc_rproc_addr_init(struct mchp_ipc_rproc *priv, > + struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct device_node *np = dev->of_node; > + int i, err, rmem_np; > + > + rmem_np = of_count_phandle_with_args(np, "memory-region", NULL); > + if (rmem_np <= 0) > + return 0; > + > + for (i = 0; i < rmem_np; i++) { > + struct device_node *node; > + struct resource res; > + > + node = of_parse_phandle(np, "memory-region", i); > + if (!node) > + continue; > + > + if (!strncmp(node->name, "vdev", strlen("vdev"))) { Uh? Why do you look for node names? What if I call the name differently? Why would that matter? > + of_node_put(node); > + continue; > + } > + > + if (!strcmp(node->name, "rsc-table")) { No, really. Why are you checking for these? NAK > + err = of_address_to_resource(node, 0, &res); > + if (err) { > + of_node_put(node); > + return dev_err_probe(dev, err, > + "unable to resolve memory region\n"); > + } > + priv->rsc_table = devm_ioremap(&pdev->dev, > + res.start, resource_size(&res)); > + of_node_put(node); > + } > + } > + > + return 0; > +} Best regards, Krzysztof _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv