From: Rob Herring <robh@kernel.org>
To: Andrew Murray <andrew.murray@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
bcm-kernel-feedback-list@broadcom.com,
Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
Heiko Stuebner <heiko@sntech.de>,
Hou Zhiqiang <Zhiqiang.Hou@nxp.com>,
Jingoo Han <jingoohan1@gmail.com>,
Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>,
Ley Foon Tan <lftan@altera.com>,
Linus Walleij <linus.walleij@linaro.org>,
linux-mediatek@lists.infradead.org,
linux-renesas-soc@vger.kernel.org,
linux-rockchip@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Michal Simek <michal.simek@xilinx.com>,
Ray Jui <rjui@broadcom.com>,
rfi@lists.rocketboards.org, Ryder Lee <ryder.lee@mediatek.com>,
Scott Branden <sbranden@broadcom.com>,
Shawn Lin <shawn.lin@rock-chips.com>,
Simon Horman <horms@verge.net.au>,
Srinath Mannam <srinath.mannam@broadcom.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Toan Le <toan@os.amperecomputing.com>,
Tom Joseph <tjoseph@cadence.com>, Will Deacon <will@kernel.org>
Subject: [PATCH v2 16/25] PCI: versatile: Use pci_parse_request_of_pci_ranges()
Date: Wed, 16 Oct 2019 15:06:38 -0500 [thread overview]
Message-ID: <20191016200647.32050-17-robh@kernel.org> (raw)
In-Reply-To: <20191016200647.32050-1-robh@kernel.org>
Convert ARM Versatile host bridge to use the common
pci_parse_request_of_pci_ranges().
There's no need to assign the resources to a temporary list first. Just
use bridge->windows directly and remove all the temporary list handling.
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rob Herring <robh@kernel.org>
---
v2:
- Fix 'mem' initial value to 1
- Remove temporary resource list
---
drivers/pci/controller/pci-versatile.c | 64 +++++---------------------
1 file changed, 11 insertions(+), 53 deletions(-)
diff --git a/drivers/pci/controller/pci-versatile.c b/drivers/pci/controller/pci-versatile.c
index f59ad2728c0b..18697f2ea345 100644
--- a/drivers/pci/controller/pci-versatile.c
+++ b/drivers/pci/controller/pci-versatile.c
@@ -62,65 +62,16 @@ static struct pci_ops pci_versatile_ops = {
.write = pci_generic_config_write,
};
-static int versatile_pci_parse_request_of_pci_ranges(struct device *dev,
- struct list_head *res)
-{
- int err, mem = 1, res_valid = 0;
- resource_size_t iobase;
- struct resource_entry *win, *tmp;
-
- err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, res, &iobase);
- if (err)
- return err;
-
- err = devm_request_pci_bus_resources(dev, res);
- if (err)
- goto out_release_res;
-
- resource_list_for_each_entry_safe(win, tmp, res) {
- struct resource *res = win->res;
-
- switch (resource_type(res)) {
- case IORESOURCE_IO:
- err = devm_pci_remap_iospace(dev, res, iobase);
- if (err) {
- dev_warn(dev, "error %d: failed to map resource %pR\n",
- err, res);
- resource_list_destroy_entry(win);
- }
- break;
- case IORESOURCE_MEM:
- res_valid |= !(res->flags & IORESOURCE_PREFETCH);
-
- writel(res->start >> 28, PCI_IMAP(mem));
- writel(PHYS_OFFSET >> 28, PCI_SMAP(mem));
- mem++;
-
- break;
- }
- }
-
- if (res_valid)
- return 0;
-
- dev_err(dev, "non-prefetchable memory resource required\n");
- err = -EINVAL;
-
-out_release_res:
- pci_free_resource_list(res);
- return err;
-}
-
static int versatile_pci_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
- int ret, i, myslot = -1;
+ struct resource_entry *entry;
+ int ret, i, myslot = -1, mem = 1;
u32 val;
void __iomem *local_pci_cfg_base;
struct pci_bus *bus, *child;
struct pci_host_bridge *bridge;
- LIST_HEAD(pci_res);
bridge = devm_pci_alloc_host_bridge(dev, 0);
if (!bridge)
@@ -141,10 +92,18 @@ static int versatile_pci_probe(struct platform_device *pdev)
if (IS_ERR(versatile_cfg_base[1]))
return PTR_ERR(versatile_cfg_base[1]);
- ret = versatile_pci_parse_request_of_pci_ranges(dev, &pci_res);
+ ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL);
if (ret)
return ret;
+ resource_list_for_each_entry(entry, &bridge->windows) {
+ if (resource_type(entry->res) == IORESOURCE_MEM) {
+ writel(entry->res->start >> 28, PCI_IMAP(mem));
+ writel(PHYS_OFFSET >> 28, PCI_SMAP(mem));
+ mem++;
+ }
+ }
+
/*
* We need to discover the PCI core first to configure itself
* before the main PCI probing is performed
@@ -197,7 +156,6 @@ static int versatile_pci_probe(struct platform_device *pdev)
pci_add_flags(PCI_ENABLE_PROC_DOMAINS);
pci_add_flags(PCI_REASSIGN_ALL_BUS);
- list_splice_init(&pci_res, &bridge->windows);
bridge->dev.parent = dev;
bridge->sysdata = NULL;
bridge->busnr = 0;
--
2.20.1
next prev parent reply other threads:[~2019-10-16 20:07 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-16 20:06 [PATCH v2 00/25] PCI host resource consolidation Rob Herring
2019-10-16 20:06 ` [PATCH v2 01/25] resource: Add a resource_list_get_entry_of_type helper Rob Herring
2019-10-17 7:25 ` Christoph Hellwig
2019-10-18 12:14 ` Andrew Murray
2019-10-16 20:06 ` [PATCH v2 02/25] PCI: Export pci_parse_request_of_pci_ranges() Rob Herring
2019-10-18 12:06 ` Andrew Murray
2019-10-16 20:06 ` [PATCH v2 03/25] PCI: aardvark: Use pci_parse_request_of_pci_ranges() Rob Herring
2019-10-16 20:06 ` [PATCH v2 04/25] PCI: altera: " Rob Herring
2019-10-18 12:09 ` Andrew Murray
2019-10-16 20:06 ` [PATCH v2 05/25] PCI: dwc: " Rob Herring
2019-10-18 12:35 ` Andrew Murray
2019-10-20 21:39 ` Rob Herring
2019-10-16 20:06 ` [PATCH v2 06/25] PCI: faraday: Use pci_parse_request_of_pci_ranges Rob Herring
2019-10-18 12:57 ` Andrew Murray
2019-10-16 20:06 ` [PATCH v2 07/25] PCI: iproc: Use pci_parse_request_of_pci_ranges() Rob Herring
2019-10-18 13:00 ` Andrew Murray
2019-10-16 20:06 ` [PATCH v2 08/25] PCI: mediatek: " Rob Herring
2019-10-16 20:06 ` [PATCH v2 09/25] PCI: mobiveil: " Rob Herring
2019-10-18 15:41 ` Andrew Murray
2019-10-16 20:06 ` [PATCH v2 10/25] PCI: rockchip: " Rob Herring
2019-10-18 15:51 ` Andrew Murray
2019-10-20 21:36 ` Rob Herring
2019-10-16 20:06 ` [PATCH v2 11/25] PCI: rockchip: Drop storing driver private outbound resource data Rob Herring
2019-10-17 7:26 ` Christoph Hellwig
2019-10-17 12:24 ` Rob Herring
2019-10-16 20:06 ` [PATCH v2 12/25] PCI: v3-semi: Use pci_parse_request_of_pci_ranges() Rob Herring
2019-10-21 0:38 ` Linus Walleij
2019-10-16 20:06 ` [PATCH v2 13/25] PCI: xgene: " Rob Herring
2019-10-16 20:06 ` [PATCH v2 14/25] PCI: xilinx: " Rob Herring
2019-10-16 20:06 ` [PATCH v2 15/25] PCI: xilinx-nwl: " Rob Herring
2019-10-16 20:06 ` Rob Herring [this message]
2019-10-21 0:39 ` [PATCH v2 16/25] PCI: versatile: " Linus Walleij
2019-10-16 20:06 ` [PATCH v2 17/25] PCI: versatile: Remove usage of PHYS_OFFSET Rob Herring
2019-10-21 0:40 ` Linus Walleij
2019-10-16 20:06 ` [PATCH v2 18/25] PCI: versatile: Enable COMPILE_TEST Rob Herring
2019-10-21 0:41 ` Linus Walleij
2019-10-16 20:06 ` [PATCH v2 19/25] PCI: of: Add inbound resource parsing to helpers Rob Herring
2019-10-16 20:06 ` [PATCH v2 20/25] PCI: ftpci100: Use inbound resources for setup Rob Herring
2019-10-21 0:41 ` Linus Walleij
2019-10-16 20:06 ` [PATCH v2 21/25] PCI: v3-semi: " Rob Herring
2019-10-16 20:06 ` [PATCH v2 22/25] PCI: xgene: " Rob Herring
2019-10-16 20:06 ` [PATCH v2 23/25] PCI: iproc: " Rob Herring
2019-10-16 20:06 ` [PATCH v2 24/25] PCI: rcar: " Rob Herring
2019-10-16 20:06 ` [PATCH v2 25/25] PCI: Make devm_of_pci_get_host_bridge_resources() static Rob Herring
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