From nobody Tue Apr 08 10:49:09 2025 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4ZX2rQ0kx4z5sC8m; Tue, 08 Apr 2025 10:49:10 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4ZX2rP3qYWz3kHR; Tue, 08 Apr 2025 10:49:09 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1744109349; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=nYWqCnQS8wdFh8w+7EzOEoMwK5vgKBJkGDpcD2IijdM=; b=hbEDcuyPon8MekguGxJUPJyyJ4ayiYliIURtgi+khIPHVDa9mI3Ua2D+hXDqq48OzI4niz p55TA/wpUGIUxMCR4CovRVa11OLkjTGYUP7fnUUw0C+T1X3nrEW7n502fYKwPLqpE5GHH1 y8sgYpupt5aP0opbUU+w9Tdh3Z7blgyhjjEhTVj6i2wRH2bj9Vq/Dox5FtYcEAdESTkSil VTj1PSD0PgFpaPWq4pCQbAhv/m7WX4/fmk+k/+4LpJRkr6d15vDfPROllXUx9LHb2YN5Bu 9qDxnSGjSLgdq9RHhGjb+ii7YGsIqNm766jUrl9I98tGBu7I88iS6E+E7ouM9g== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1744109349; a=rsa-sha256; cv=none; b=UCzJ0MUybRwcm/7zYYbqI5H5UWcWOuKoZH+8zFnXLCNIKa1bxJdRN8Eo3A1mXn0KG9zZfj NBhqTXQUh24jY5bXaUvlyW9EXEK+DG/s27NTd2cQwaiUAgQt9XRGnDPF3HKLtB3GVZ5+5w idiMxYGemNMZxaCb2ObMzxSAHg9phby+4JJqA5VPG4RLbwRTgtR4TakciRl0mpRvsvRwrD NeFa158h7nR8Do9KCR6tGvTJOkLuXR7m6kCxdbUKHCda3VxPRpQDPqxycKJZ3+tHWUpgdY /jPq68t+C4nKFhKKp1OQOO1nDuE8ggFaApvmyf7j+M5hjxyUQOpkIbfzEP3mPQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1744109349; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=nYWqCnQS8wdFh8w+7EzOEoMwK5vgKBJkGDpcD2IijdM=; b=c64Sv5Jo3o+ROO9SoHbO5hbHUzo+D5NwkPi9S5kLsMGCrdYZE4d1Drsxhdwxm8FPCM2Axk 45E//a2NBcspX2GjjDNJxOB+aj5R9EyGUNFTf+s//vcz9DGS9HOGhCP9X7BRawrmWombQw g0xh9Pii8u4KMtsqUzL38Tx9HD2y0FljCXK4uHJ68WmNd+qmAgXESrEpisHzbYtkFFEO98 tvGbZ5lu+tfHHv0DCj5j/tG1gu526a0hLwimFo57sNWwLm2Ox+QFnTfScffpsGJVcNixgN wXC9tX89ctIjP/TKZISkqOPjODWyL08167z/3SuYLRCucm8/jA1BULVxt7zoNg== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4ZX2rP1ZzqzCZl; Tue, 08 Apr 2025 10:49:09 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.18.1/8.18.1) with ESMTP id 538An9Bm001988; Tue, 8 Apr 2025 10:49:09 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.18.1/8.18.1/Submit) id 538An9mM001985; Tue, 8 Apr 2025 10:49:09 GMT (envelope-from git) Date: Tue, 8 Apr 2025 10:49:09 GMT Message-Id: <202504081049.538An9mM001985@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Andrew Turner Subject: git: 8d5b63efd19c - main - dev/fdt: Add fdt_foreach_reserved_mem List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: andrew X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 8d5b63efd19c9395eb9519145be4ba02406dc9b3 Auto-Submitted: auto-generated The branch main has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=8d5b63efd19c9395eb9519145be4ba02406dc9b3 commit 8d5b63efd19c9395eb9519145be4ba02406dc9b3 Author: Andrew Turner AuthorDate: 2025-04-08 10:30:17 +0000 Commit: Andrew Turner CommitDate: 2025-04-08 10:48:28 +0000 dev/fdt: Add fdt_foreach_reserved_mem As with fdt_foreach_mem_region add a function that calls a callback for each reserved memory region. This allows us to exclude this memory from the physical map in a way that is safe from overflowing a fixed array on the stack. Reviewed by: imp Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D49698 --- sys/dev/fdt/fdt_common.c | 38 ++++++++++++++++++++++++++++++++++++++ sys/dev/fdt/fdt_common.h | 1 + 2 files changed, 39 insertions(+) diff --git a/sys/dev/fdt/fdt_common.c b/sys/dev/fdt/fdt_common.c index 6c505ac2cd7c..e23878750bea 100644 --- a/sys/dev/fdt/fdt_common.c +++ b/sys/dev/fdt/fdt_common.c @@ -499,6 +499,44 @@ out: return (rv); } +int +fdt_foreach_reserved_mem(fdt_mem_region_cb cb, void *arg) +{ + struct mem_region mr; + pcell_t reg[FDT_REG_CELLS]; + phandle_t child, root; + int addr_cells, size_cells; + int rv; + + root = OF_finddevice("/reserved-memory"); + if (root == -1) + return (ENXIO); + + if ((rv = fdt_addrsize_cells(root, &addr_cells, &size_cells)) != 0) + return (rv); + + if (addr_cells + size_cells > FDT_REG_CELLS) + panic("Too many address and size cells %d %d", addr_cells, + size_cells); + + for (child = OF_child(root); child != 0; child = OF_peer(child)) { + if (!OF_hasprop(child, "no-map")) + continue; + + rv = OF_getprop(child, "reg", reg, sizeof(reg)); + if (rv <= 0) + /* XXX: Does a no-map of a dynamic range make sense? */ + continue; + + fdt_data_to_res(reg, addr_cells, size_cells, + (u_long *)&mr.mr_start, (u_long *)&mr.mr_size); + + cb(&mr, arg); + } + + return (0); +} + int fdt_get_reserved_mem(struct mem_region *reserved, int *mreserved) { diff --git a/sys/dev/fdt/fdt_common.h b/sys/dev/fdt/fdt_common.h index f450d976dfe0..d1db7c0620fd 100644 --- a/sys/dev/fdt/fdt_common.h +++ b/sys/dev/fdt/fdt_common.h @@ -85,6 +85,7 @@ phandle_t fdt_find_compatible(phandle_t, const char *, int); phandle_t fdt_depth_search_compatible(phandle_t, const char *, int); int fdt_foreach_mem_region(fdt_mem_region_cb, void *); int fdt_get_mem_regions(struct mem_region *, int *, uint64_t *); +int fdt_foreach_reserved_mem(fdt_mem_region_cb, void *); int fdt_get_reserved_mem(struct mem_region *, int *); int fdt_get_reserved_regions(struct mem_region *, int *); int fdt_get_phyaddr(phandle_t, device_t, int *, void **);