From patchwork Thu Nov 21 14:02:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 11256285 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 93FFE138C for ; Thu, 21 Nov 2019 14:02:46 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7BC8E20714 for ; Thu, 21 Nov 2019 14:02:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7BC8E20714 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C2BC38910D; Thu, 21 Nov 2019 14:02:42 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id BE5CA6F373; Thu, 21 Nov 2019 14:02:34 +0000 (UTC) Received: from localhost (173-25-83-245.client.mchsi.com [173.25.83.245]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 676412070B; Thu, 21 Nov 2019 14:02:34 +0000 (UTC) From: Bjorn Helgaas To: linux-pci@vger.kernel.org Subject: [PATCH 4/7] drm/amdgpu: Prefer pcie_capability_read_word() Date: Thu, 21 Nov 2019 08:02:17 -0600 Message-Id: <20191121140220.38030-5-helgaas@kernel.org> X-Mailer: git-send-email 2.24.0.432.g9d3f5f5b63-goog In-Reply-To: <20191121140220.38030-1-helgaas@kernel.org> References: <20191121140220.38030-1-helgaas@kernel.org> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574344954; bh=TP+FQMSqKA0fGNgps9ogIDNXTdLZ+sJxF9h9fPbPHMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=V/5sTl7TvqaU01yg9EJyBt+H+ToQFyavjv2XRYUXMt5IP7atodfKRIT2nfvmIGxRn YFbXbG7xHo4WI8EuFn5xmcSM3aUJenECkhPuaXW0JGIG8SguRJHm3qtFrbMSR7R7s1 tKWbC/c3hG77qCnKXl2YvXl20j9mzOl486hZL9gw= X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Frederick Lawler , Dave Airlie , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Bjorn Helgaas , amd-gfx@lists.freedesktop.org, Christian Koenig Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Frederick Lawler Commit 8c0d3a02c130 ("PCI: Add accessors for PCI Express Capability") added accessors for the PCI Express Capability so that drivers didn't need to be aware of differences between v1 and v2 of the PCI Express Capability. Replace pci_read_config_word() and pci_write_config_word() calls with pcie_capability_read_word() and pcie_capability_write_word(). [bhelgaas: fix a couple remaining instances in cik.c] Link: https://lore.kernel.org/r/20191118003513.10852-1-fred@fredlawl.com Signed-off-by: Frederick Lawler Signed-off-by: Bjorn Helgaas --- drivers/gpu/drm/amd/amdgpu/cik.c | 71 ++++++++++++++++++++------------ drivers/gpu/drm/amd/amdgpu/si.c | 71 ++++++++++++++++++++------------ 2 files changed, 90 insertions(+), 52 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c index 3067bb874032..38b06ae6357a 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik.c +++ b/drivers/gpu/drm/amd/amdgpu/cik.c @@ -1384,7 +1384,6 @@ static int cik_set_vce_clocks(struct amdgpu_device *adev, u32 evclk, u32 ecclk) static void cik_pcie_gen3_enable(struct amdgpu_device *adev) { struct pci_dev *root = adev->pdev->bus->self; - int bridge_pos, gpu_pos; u32 speed_cntl, current_data_rate; int i; u16 tmp16; @@ -1419,12 +1418,7 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev) DRM_INFO("enabling PCIE gen 2 link speeds, disable with amdgpu.pcie_gen2=0\n"); } - bridge_pos = pci_pcie_cap(root); - if (!bridge_pos) - return; - - gpu_pos = pci_pcie_cap(adev->pdev); - if (!gpu_pos) + if (!pci_is_pcie(root) || !pci_is_pcie(adev->pdev)) return; if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) { @@ -1434,14 +1428,17 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev) u16 bridge_cfg2, gpu_cfg2; u32 max_lw, current_lw, tmp; - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg); + pcie_capability_read_word(root, PCI_EXP_LNKCTL, + &bridge_cfg); + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL, + &gpu_cfg); tmp16 = bridge_cfg | PCI_EXP_LNKCTL_HAWD; - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(root, PCI_EXP_LNKCTL, tmp16); tmp16 = gpu_cfg | PCI_EXP_LNKCTL_HAWD; - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL, + tmp16); tmp = RREG32_PCIE(ixPCIE_LC_STATUS1); max_lw = (tmp & PCIE_LC_STATUS1__LC_DETECTED_LINK_WIDTH_MASK) >> @@ -1465,15 +1462,23 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev) for (i = 0; i < 10; i++) { /* check status */ - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_DEVSTA, &tmp16); + pcie_capability_read_word(adev->pdev, + PCI_EXP_DEVSTA, + &tmp16); if (tmp16 & PCI_EXP_DEVSTA_TRPND) break; - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg); + pcie_capability_read_word(root, PCI_EXP_LNKCTL, + &bridge_cfg); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL, + &gpu_cfg); - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &bridge_cfg2); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &gpu_cfg2); + pcie_capability_read_word(root, PCI_EXP_LNKCTL2, + &bridge_cfg2); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL2, + &gpu_cfg2); tmp = RREG32_PCIE(ixPCIE_LC_CNTL4); tmp |= PCIE_LC_CNTL4__LC_SET_QUIESCE_MASK; @@ -1486,32 +1491,45 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev) msleep(100); /* linkctl */ - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16); + pcie_capability_read_word(root, PCI_EXP_LNKCTL, + &tmp16); tmp16 &= ~PCI_EXP_LNKCTL_HAWD; tmp16 |= (bridge_cfg & PCI_EXP_LNKCTL_HAWD); - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(root, PCI_EXP_LNKCTL, + tmp16); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &tmp16); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL, + &tmp16); tmp16 &= ~PCI_EXP_LNKCTL_HAWD; tmp16 |= (gpu_cfg & PCI_EXP_LNKCTL_HAWD); - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(adev->pdev, + PCI_EXP_LNKCTL, + tmp16); /* linkctl2 */ - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16); + pcie_capability_read_word(root, PCI_EXP_LNKCTL2, + &tmp16); tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN); tmp16 |= (bridge_cfg2 & (PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN)); - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16); + pcie_capability_write_word(root, + PCI_EXP_LNKCTL2, + tmp16); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL2, + &tmp16); tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN); tmp16 |= (gpu_cfg2 & (PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN)); - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); + pcie_capability_write_word(adev->pdev, + PCI_EXP_LNKCTL2, + tmp16); tmp = RREG32_PCIE(ixPCIE_LC_CNTL4); tmp &= ~PCIE_LC_CNTL4__LC_SET_QUIESCE_MASK; @@ -1526,15 +1544,16 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev) speed_cntl &= ~PCIE_LC_SPEED_CNTL__LC_FORCE_DIS_SW_SPEED_CHANGE_MASK; WREG32_PCIE(ixPCIE_LC_SPEED_CNTL, speed_cntl); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL2, &tmp16); tmp16 &= ~PCI_EXP_LNKCTL2_TLS; + if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */ else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2) tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */ else tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */ - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL2, tmp16); speed_cntl = RREG32_PCIE(ixPCIE_LC_SPEED_CNTL); speed_cntl |= PCIE_LC_SPEED_CNTL__LC_INITIATE_LINK_SPEED_CHANGE_MASK; diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c index a7dcb0d0f039..9f82be879224 100644 --- a/drivers/gpu/drm/amd/amdgpu/si.c +++ b/drivers/gpu/drm/amd/amdgpu/si.c @@ -1633,7 +1633,6 @@ static void si_init_golden_registers(struct amdgpu_device *adev) static void si_pcie_gen3_enable(struct amdgpu_device *adev) { struct pci_dev *root = adev->pdev->bus->self; - int bridge_pos, gpu_pos; u32 speed_cntl, current_data_rate; int i; u16 tmp16; @@ -1668,12 +1667,7 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev) DRM_INFO("enabling PCIE gen 2 link speeds, disable with amdgpu.pcie_gen2=0\n"); } - bridge_pos = pci_pcie_cap(root); - if (!bridge_pos) - return; - - gpu_pos = pci_pcie_cap(adev->pdev); - if (!gpu_pos) + if (!pci_is_pcie(root) || !pci_is_pcie(adev->pdev)) return; if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) { @@ -1682,14 +1676,17 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev) u16 bridge_cfg2, gpu_cfg2; u32 max_lw, current_lw, tmp; - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg); + pcie_capability_read_word(root, PCI_EXP_LNKCTL, + &bridge_cfg); + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL, + &gpu_cfg); tmp16 = bridge_cfg | PCI_EXP_LNKCTL_HAWD; - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(root, PCI_EXP_LNKCTL, tmp16); tmp16 = gpu_cfg | PCI_EXP_LNKCTL_HAWD; - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL, + tmp16); tmp = RREG32_PCIE(PCIE_LC_STATUS1); max_lw = (tmp & LC_DETECTED_LINK_WIDTH_MASK) >> LC_DETECTED_LINK_WIDTH_SHIFT; @@ -1706,15 +1703,23 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev) } for (i = 0; i < 10; i++) { - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_DEVSTA, &tmp16); + pcie_capability_read_word(adev->pdev, + PCI_EXP_DEVSTA, + &tmp16); if (tmp16 & PCI_EXP_DEVSTA_TRPND) break; - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg); + pcie_capability_read_word(root, PCI_EXP_LNKCTL, + &bridge_cfg); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL, + &gpu_cfg); - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &bridge_cfg2); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &gpu_cfg2); + pcie_capability_read_word(root, PCI_EXP_LNKCTL2, + &bridge_cfg2); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL2, + &gpu_cfg2); tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4); tmp |= LC_SET_QUIESCE; @@ -1726,31 +1731,44 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev) mdelay(100); - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16); + pcie_capability_read_word(root, PCI_EXP_LNKCTL, + &tmp16); tmp16 &= ~PCI_EXP_LNKCTL_HAWD; tmp16 |= (bridge_cfg & PCI_EXP_LNKCTL_HAWD); - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(root, PCI_EXP_LNKCTL, + tmp16); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &tmp16); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL, + &tmp16); tmp16 &= ~PCI_EXP_LNKCTL_HAWD; tmp16 |= (gpu_cfg & PCI_EXP_LNKCTL_HAWD); - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16); + pcie_capability_write_word(adev->pdev, + PCI_EXP_LNKCTL, + tmp16); - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16); + pcie_capability_read_word(root, PCI_EXP_LNKCTL2, + &tmp16); tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN); tmp16 |= (bridge_cfg2 & (PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN)); - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16); + pcie_capability_write_word(root, + PCI_EXP_LNKCTL2, + tmp16); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); + pcie_capability_read_word(adev->pdev, + PCI_EXP_LNKCTL2, + &tmp16); tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN); tmp16 |= (gpu_cfg2 & (PCI_EXP_LNKCTL2_ENTER_COMP | PCI_EXP_LNKCTL2_TX_MARGIN)); - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); + pcie_capability_write_word(adev->pdev, + PCI_EXP_LNKCTL2, + tmp16); tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4); tmp &= ~LC_SET_QUIESCE; @@ -1763,15 +1781,16 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev) speed_cntl &= ~LC_FORCE_DIS_SW_SPEED_CHANGE; WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl); - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL2, &tmp16); tmp16 &= ~PCI_EXP_LNKCTL2_TLS; + if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */ else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2) tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */ else tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */ - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL2, tmp16); speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); speed_cntl |= LC_INITIATE_LINK_SPEED_CHANGE;