From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9E9CF2264A0 for ; Mon, 7 Jul 2025 17:04:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751907860; cv=none; b=YTLC4kspVWskwz9xJnypJcuhzzTg9ts/g7z4TrwwTTJSuxtbHTgpylzCd0twVXeBAEqFWMXGG9PmVFLVUniIWmjRRQPPTWdSRGpswdUgbQOxzE6DXOyVkBJRjwfEkxqumCOHhTpCt+8TjHEpd4jcjp9XaEL+oG+jqVWoWlwtMSw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751907860; c=relaxed/simple; bh=LFPf5j1dTwiYI98UPWSw5Yke7PmDgeBKnydW+hMRlpg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M53SaLzDwNbJ4TI/Jzu4lqZg36RFolr8bLcPOJRS2Rpp2O/LvPwZ9nGjl2VTYqHMKXX1I39HSx5hBpv4fsyNR7pgcOdcJOBluTkBlJftKRwc4tI0TxqGZdZE8Nz9bItGYwoExvt+o3mrzCe3VP5yGWggKNl8flUMaOBnEnCCSoA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BNrMiErM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BNrMiErM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D149AC4CEF1; Mon, 7 Jul 2025 17:04:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751907857; bh=LFPf5j1dTwiYI98UPWSw5Yke7PmDgeBKnydW+hMRlpg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BNrMiErMX06JyWoqjcJSBlJBZoPFVhQgUYVj/TjBwF5cGv5XF788C3dNcJes+vOQM s5wb8s/rtKB3xVRjwk5SaROS3yj5PCAhoVzQkZlPhLzlsNV0FJbxzJS7qT/g1yeNvX pqIZMStp4FwKGRdczHD2FbsikWuoSAe/qx22z3NuSj2tDrbB2YCUf1JeH56S6A4nm4 /05Ay64uDt74p0qNFw9r1rhdqFvjC1bz5G6a4AZbfN0FQU781DmUJJBD5S5hY5uEsF DZ4xArXwK7ZBZgDw7fy3RDgYm343fZpTLzejFBBs6QTXClNm1zKS7Yj3n8U9aXXIq+ vHELVHgA/y2Ow== From: Leon Romanovsky To: Jason Gunthorpe Cc: Yishai Hadas , Bjorn Helgaas , linux-pci@vger.kernel.org Subject: [PATCH rdma-next 1/8] pci/tph: Expose pcie_tph_get_st_table_size() Date: Mon, 7 Jul 2025 20:03:01 +0300 Message-ID: X-Mailer: git-send-email 2.50.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Yishai Hadas Expose pcie_tph_get_st_table_size() to be used by drivers as will be done in the next patch from the series. Signed-off-by: Yishai Hadas Signed-off-by: Leon Romanovsky --- drivers/pci/tph.c | 11 ++++++----- include/linux/pci-tph.h | 1 + 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/pci/tph.c b/drivers/pci/tph.c index 77fce5e1b830..cc64f93709a4 100644 --- a/drivers/pci/tph.c +++ b/drivers/pci/tph.c @@ -168,7 +168,7 @@ static u32 get_st_table_loc(struct pci_dev *pdev) * Return the size of ST table. If ST table is not in TPH Requester Extended * Capability space, return 0. Otherwise return the ST Table Size + 1. */ -static u16 get_st_table_size(struct pci_dev *pdev) +u16 pcie_tph_get_st_table_size(struct pci_dev *pdev) { u32 reg; u32 loc; @@ -185,6 +185,7 @@ static u16 get_st_table_size(struct pci_dev *pdev) return FIELD_GET(PCI_TPH_CAP_ST_MASK, reg) + 1; } +EXPORT_SYMBOL(pcie_tph_get_st_table_size); /* Return device's Root Port completer capability */ static u8 get_rp_completer_type(struct pci_dev *pdev) @@ -211,7 +212,7 @@ static int write_tag_to_st_table(struct pci_dev *pdev, int index, u16 tag) int offset; /* Check if index is out of bound */ - st_table_size = get_st_table_size(pdev); + st_table_size = pcie_tph_get_st_table_size(pdev); if (index >= st_table_size) return -ENXIO; @@ -443,7 +444,7 @@ void pci_restore_tph_state(struct pci_dev *pdev) pci_write_config_dword(pdev, pdev->tph_cap + PCI_TPH_CTRL, *cap++); st_entry = (u16 *)cap; offset = PCI_TPH_BASE_SIZEOF; - num_entries = get_st_table_size(pdev); + num_entries = pcie_tph_get_st_table_size(pdev); for (i = 0; i < num_entries; i++) { pci_write_config_word(pdev, pdev->tph_cap + offset, *st_entry++); @@ -475,7 +476,7 @@ void pci_save_tph_state(struct pci_dev *pdev) /* Save all ST entries in extended capability structure */ st_entry = (u16 *)cap; offset = PCI_TPH_BASE_SIZEOF; - num_entries = get_st_table_size(pdev); + num_entries = pcie_tph_get_st_table_size(pdev); for (i = 0; i < num_entries; i++) { pci_read_config_word(pdev, pdev->tph_cap + offset, st_entry++); @@ -499,7 +500,7 @@ void pci_tph_init(struct pci_dev *pdev) if (!pdev->tph_cap) return; - num_entries = get_st_table_size(pdev); + num_entries = pcie_tph_get_st_table_size(pdev); save_size = sizeof(u32) + num_entries * sizeof(u16); pci_add_ext_cap_save_buffer(pdev, PCI_EXT_CAP_ID_TPH, save_size); } diff --git a/include/linux/pci-tph.h b/include/linux/pci-tph.h index c3e806c13d64..9e4e331b1603 100644 --- a/include/linux/pci-tph.h +++ b/include/linux/pci-tph.h @@ -28,6 +28,7 @@ int pcie_tph_get_cpu_st(struct pci_dev *dev, unsigned int cpu_uid, u16 *tag); void pcie_disable_tph(struct pci_dev *pdev); int pcie_enable_tph(struct pci_dev *pdev, int mode); +u16 pcie_tph_get_st_table_size(struct pci_dev *pdev); #else static inline int pcie_tph_set_st_entry(struct pci_dev *pdev, unsigned int index, u16 tag) -- 2.50.0