Merge branch 'pci/host-rcar' into next
* pci/host-rcar:
PCI: rcar: Add gen3 fallback compatibility string for pcie-rcar
PCI: rcar: Use gen2 fallback compatibility last
PCI: rcar-gen2: Use gen2 fallback compatibility last
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index b3bc50f..5a1732b 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -294,3 +294,10 @@
a firmware bug to the system vendor. Writing to this file
taints the kernel with TAINT_FIRMWARE_WORKAROUND, which
reduces the supportability of your system.
+
+What: /sys/bus/pci/devices/.../revision
+Date: November 2016
+Contact: Emil Velikov <emil.l.velikov@gmail.com>
+Description:
+ This file contains the revision field of the the PCI device.
+ The value comes from device config space. The file is read only.
diff --git a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
index 01b88f4..b8e48b4 100644
--- a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
@@ -1,10 +1,17 @@
* Broadcom iProc PCIe controller with the platform bus interface
Required properties:
-- compatible: Must be "brcm,iproc-pcie" for PAXB, or "brcm,iproc-pcie-paxc"
- for PAXC. PAXB-based root complex is used for external endpoint devices.
- PAXC-based root complex is connected to emulated endpoint devices
- internal to the ASIC
+- compatible:
+ "brcm,iproc-pcie" for the first generation of PAXB based controller,
+used in SoCs including NSP, Cygnus, NS2, and Pegasus
+ "brcm,iproc-pcie-paxb-v2" for the second generation of PAXB-based
+controllers, used in Stingray
+ "brcm,iproc-pcie-paxc" for the first generation of PAXC based
+controller, used in NS2
+ "brcm,iproc-pcie-paxc-v2" for the second generation of PAXC based
+controller, used in Stingray
+ PAXB-based root complex is used for external endpoint devices. PAXC-based
+root complex is connected to emulated endpoint devices internal to the ASIC
- reg: base address and length of the PCIe controller I/O register space
- #interrupt-cells: set to <1>
- interrupt-map-mask and interrupt-map, standard PCI properties to define the
@@ -19,6 +26,10 @@
Optional properties:
- phys: phandle of the PCIe PHY device
- phy-names: must be "pcie-phy"
+- dma-coherent: present if DMA operations are coherent
+- dma-ranges: Some PAXB-based root complexes do not have inbound mapping done
+ by the ASIC after power on reset. In this case, SW is required to configure
+the mapping, based on inbound memory regions specified by this property.
- brcm,pcie-ob: Some iProc SoCs do not have the outbound address mapping done
by the ASIC after power on reset. In this case, SW needs to configure it
@@ -29,11 +40,6 @@
Required:
- brcm,pcie-ob-axi-offset: The offset from the AXI address to the internal
address used by the iProc PCIe core (not the PCIe address)
-- brcm,pcie-ob-window-size: The outbound address mapping window size (in MB)
-
-Optional:
-- brcm,pcie-ob-oarr-size: Some iProc SoCs need the OARR size bit to be set to
-increase the outbound window size
MSI support (optional):
@@ -41,10 +47,19 @@
an event queue based MSI support. The iProc MSI uses host memories to store
MSI posted writes in the event queues
-- msi-parent: Link to the device node of the MSI controller. On newer iProc
-platforms, the MSI controller may be gicv2m or gicv3-its. On older iProc
-platforms without MSI support in its interrupt controller, one may use the
-event queue based MSI support integrated within the iProc PCIe core.
+On newer iProc platforms, gicv2m or gicv3-its based MSI support should be used
+
+- msi-map: Maps a Requester ID to an MSI controller and associated MSI
+sideband data
+
+- msi-parent: Link to the device node of the MSI controller, used when no MSI
+sideband data is passed between the iProc PCIe controller and the MSI
+controller
+
+Refer to the following binding documents for more detailed description on
+the use of 'msi-map' and 'msi-parent':
+ Documentation/devicetree/bindings/pci/pci-msi.txt
+ Documentation/devicetree/bindings/interrupt-controller/msi.txt
When the iProc event queue based MSI is used, one needs to define the
following properties in the MSI device node:
@@ -80,9 +95,7 @@
phy-names = "pcie-phy";
brcm,pcie-ob;
- brcm,pcie-ob-oarr-size;
brcm,pcie-ob-axi-offset = <0x00000000>;
- brcm,pcie-ob-window-size = <256>;
msi-parent = <&msi0>;
diff --git a/Documentation/devicetree/bindings/pci/layerscape-pci.txt b/Documentation/devicetree/bindings/pci/layerscape-pci.txt
index 41e9f55..ee1c72d5 100644
--- a/Documentation/devicetree/bindings/pci/layerscape-pci.txt
+++ b/Documentation/devicetree/bindings/pci/layerscape-pci.txt
@@ -15,6 +15,7 @@
- compatible: should contain the platform identifier such as:
"fsl,ls1021a-pcie", "snps,dw-pcie"
"fsl,ls2080a-pcie", "fsl,ls2085a-pcie", "snps,dw-pcie"
+ "fsl,ls1046a-pcie"
- reg: base addresses and lengths of the PCIe controller
- interrupts: A list of interrupt outputs of the controller. Must contain an
entry for each entry in the interrupt-names property.
diff --git a/Documentation/devicetree/bindings/pci/pci.txt b/Documentation/devicetree/bindings/pci/pci.txt
index 08dcfad0..50f9e2c 100644
--- a/Documentation/devicetree/bindings/pci/pci.txt
+++ b/Documentation/devicetree/bindings/pci/pci.txt
@@ -18,3 +18,9 @@
host bridges in the system, otherwise potentially conflicting domain numbers
may be assigned to root buses behind different host bridges. The domain
number for each host bridge in the system must be unique.
+- max-link-speed:
+ If present this property specifies PCI gen for link capability. Host
+ drivers could add this as a strategy to avoid unnecessary operation for
+ unsupported link speed, for instance, trying to do training for
+ unsupported link speed, etc. Must be '4' for gen4, '3' for gen3, '2'
+ for gen2, and '1' for gen1. Any other values are invalid.
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
index 4059a6f..e15f9b1 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
@@ -7,6 +7,7 @@
- "qcom,pcie-ipq8064" for ipq8064
- "qcom,pcie-apq8064" for apq8064
- "qcom,pcie-apq8084" for apq8084
+ - "qcom,pcie-msm8996" for msm8996 or apq8096
- reg:
Usage: required
@@ -92,6 +93,17 @@
- "aux" Auxiliary (AUX) clock
- "bus_master" Master AXI clock
- "bus_slave" Slave AXI clock
+
+- clock-names:
+ Usage: required for msm8996/apq8096
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "pipe" Pipe Clock driving internal logic
+ - "aux" Auxiliary (AUX) clock
+ - "cfg" Configuration clock
+ - "bus_master" Master AXI clock
+ - "bus_slave" Slave AXI clock
+
- resets:
Usage: required
Value type: <prop-encoded-array>
@@ -115,7 +127,7 @@
- "core" Core reset
- power-domains:
- Usage: required for apq8084
+ Usage: required for apq8084 and msm8996/apq8096
Value type: <prop-encoded-array>
Definition: A phandle and power domain specifier pair to the
power domain which is responsible for collapsing
diff --git a/Documentation/filesystems/sysfs-pci.txt b/Documentation/filesystems/sysfs-pci.txt
index 74eaac2..6ea1ced 100644
--- a/Documentation/filesystems/sysfs-pci.txt
+++ b/Documentation/filesystems/sysfs-pci.txt
@@ -17,6 +17,7 @@
| |-- resource0
| |-- resource1
| |-- resource2
+ | |-- revision
| |-- rom
| |-- subsystem_device
| |-- subsystem_vendor
@@ -41,6 +42,7 @@
resource PCI resource host addresses (ascii, ro)
resource0..N PCI resource N, if present (binary, mmap, rw[1])
resource0_wc..N_wc PCI WC map resource N, if prefetchable (binary, mmap)
+ revision PCI revision (ascii, ro)
rom PCI ROM resource, if present (binary, ro)
subsystem_device PCI subsystem device (ascii, ro)
subsystem_vendor PCI subsystem vendor (ascii, ro)
diff --git a/MAINTAINERS b/MAINTAINERS
index 1cd38a7..5b608ac 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9230,11 +9230,12 @@
F: drivers/pci/host/*layerscape*
PCI DRIVER FOR IMX6
-M: Richard Zhu <Richard.Zhu@freescale.com>
+M: Richard Zhu <hongxing.zhu@nxp.com>
M: Lucas Stach <l.stach@pengutronix.de>
L: linux-pci@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
+F: Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
F: drivers/pci/host/*imx6*
PCI DRIVER FOR TI KEYSTONE
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index acf38722..4f0e3eb 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -114,6 +114,19 @@ int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
return 0;
}
+static int pci_acpi_root_prepare_resources(struct acpi_pci_root_info *ci)
+{
+ struct resource_entry *entry, *tmp;
+ int status;
+
+ status = acpi_pci_probe_root_resources(ci);
+ resource_list_for_each_entry_safe(entry, tmp, &ci->resources) {
+ if (!(entry->res->flags & IORESOURCE_WINDOW))
+ resource_list_destroy_entry(entry);
+ }
+ return status;
+}
+
/*
* Lookup the bus range for the domain in MCFG, and set up config space
* mapping.
@@ -121,31 +134,33 @@ int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
static struct pci_config_window *
pci_acpi_setup_ecam_mapping(struct acpi_pci_root *root)
{
+ struct device *dev = &root->device->dev;
struct resource *bus_res = &root->secondary;
u16 seg = root->segment;
- struct pci_config_window *cfg;
+ struct pci_ecam_ops *ecam_ops;
struct resource cfgres;
- unsigned int bsz;
+ struct acpi_device *adev;
+ struct pci_config_window *cfg;
+ int ret;
- /* Use address from _CBA if present, otherwise lookup MCFG */
- if (!root->mcfg_addr)
- root->mcfg_addr = pci_mcfg_lookup(seg, bus_res);
-
- if (!root->mcfg_addr) {
- dev_err(&root->device->dev, "%04x:%pR ECAM region not found\n",
- seg, bus_res);
+ ret = pci_mcfg_lookup(root, &cfgres, &ecam_ops);
+ if (ret) {
+ dev_err(dev, "%04x:%pR ECAM region not found\n", seg, bus_res);
return NULL;
}
- bsz = 1 << pci_generic_ecam_ops.bus_shift;
- cfgres.start = root->mcfg_addr + bus_res->start * bsz;
- cfgres.end = cfgres.start + resource_size(bus_res) * bsz - 1;
- cfgres.flags = IORESOURCE_MEM;
- cfg = pci_ecam_create(&root->device->dev, &cfgres, bus_res,
- &pci_generic_ecam_ops);
+ adev = acpi_resource_consumer(&cfgres);
+ if (adev)
+ dev_info(dev, "ECAM area %pR reserved by %s\n", &cfgres,
+ dev_name(&adev->dev));
+ else
+ dev_warn(dev, FW_BUG "ECAM area %pR not reserved in ACPI namespace\n",
+ &cfgres);
+
+ cfg = pci_ecam_create(dev, &cfgres, bus_res, ecam_ops);
if (IS_ERR(cfg)) {
- dev_err(&root->device->dev, "%04x:%pR error %ld mapping ECAM\n",
- seg, bus_res, PTR_ERR(cfg));
+ dev_err(dev, "%04x:%pR error %ld mapping ECAM\n", seg, bus_res,
+ PTR_ERR(cfg));
return NULL;
}
@@ -159,33 +174,37 @@ static void pci_acpi_generic_release_info(struct acpi_pci_root_info *ci)
ri = container_of(ci, struct acpi_pci_generic_root_info, common);
pci_ecam_free(ri->cfg);
+ kfree(ci->ops);
kfree(ri);
}
-static struct acpi_pci_root_ops acpi_pci_root_ops = {
- .release_info = pci_acpi_generic_release_info,
-};
-
/* Interface called from ACPI code to setup PCI host controller */
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
{
int node = acpi_get_node(root->device->handle);
struct acpi_pci_generic_root_info *ri;
struct pci_bus *bus, *child;
+ struct acpi_pci_root_ops *root_ops;
ri = kzalloc_node(sizeof(*ri), GFP_KERNEL, node);
if (!ri)
return NULL;
+ root_ops = kzalloc_node(sizeof(*root_ops), GFP_KERNEL, node);
+ if (!root_ops)
+ return NULL;
+
ri->cfg = pci_acpi_setup_ecam_mapping(root);
if (!ri->cfg) {
kfree(ri);
+ kfree(root_ops);
return NULL;
}
- acpi_pci_root_ops.pci_ops = &ri->cfg->ops->pci_ops;
- bus = acpi_pci_root_create(root, &acpi_pci_root_ops, &ri->common,
- ri->cfg);
+ root_ops->release_info = pci_acpi_generic_release_info;
+ root_ops->prepare_resources = pci_acpi_root_prepare_resources;
+ root_ops->pci_ops = &ri->cfg->ops->pci_ops;
+ bus = acpi_pci_root_create(root, root_ops, &ri->common, ri->cfg);
if (!bus)
return NULL;
diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c
index b5b376e..a6a4cea 100644
--- a/drivers/acpi/pci_mcfg.c
+++ b/drivers/acpi/pci_mcfg.c
@@ -22,6 +22,7 @@
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pci-acpi.h>
+#include <linux/pci-ecam.h>
/* Structure to hold entries from the MCFG table */
struct mcfg_entry {
@@ -32,12 +33,166 @@ struct mcfg_entry {
u8 bus_end;
};
+#ifdef CONFIG_PCI_QUIRKS
+struct mcfg_fixup {
+ char oem_id[ACPI_OEM_ID_SIZE + 1];
+ char oem_table_id[ACPI_OEM_TABLE_ID_SIZE + 1];
+ u32 oem_revision;
+ u16 segment;
+ struct resource bus_range;
+ struct pci_ecam_ops *ops;
+ struct resource cfgres;
+};
+
+#define MCFG_BUS_RANGE(start, end) DEFINE_RES_NAMED((start), \
+ ((end) - (start) + 1), \
+ NULL, IORESOURCE_BUS)
+#define MCFG_BUS_ANY MCFG_BUS_RANGE(0x0, 0xff)
+
+static struct mcfg_fixup mcfg_quirks[] = {
+/* { OEM_ID, OEM_TABLE_ID, REV, SEGMENT, BUS_RANGE, ops, cfgres }, */
+
+#define QCOM_ECAM32(seg) \
+ { "QCOM ", "QDF2432 ", 1, seg, MCFG_BUS_ANY, &pci_32b_ops }
+ QCOM_ECAM32(0),
+ QCOM_ECAM32(1),
+ QCOM_ECAM32(2),
+ QCOM_ECAM32(3),
+ QCOM_ECAM32(4),
+ QCOM_ECAM32(5),
+ QCOM_ECAM32(6),
+ QCOM_ECAM32(7),
+
+#define HISI_QUAD_DOM(table_id, seg, ops) \
+ { "HISI ", table_id, 0, (seg) + 0, MCFG_BUS_ANY, ops }, \
+ { "HISI ", table_id, 0, (seg) + 1, MCFG_BUS_ANY, ops }, \
+ { "HISI ", table_id, 0, (seg) + 2, MCFG_BUS_ANY, ops }, \
+ { "HISI ", table_id, 0, (seg) + 3, MCFG_BUS_ANY, ops }
+ HISI_QUAD_DOM("HIP05 ", 0, &hisi_pcie_ops),
+ HISI_QUAD_DOM("HIP06 ", 0, &hisi_pcie_ops),
+ HISI_QUAD_DOM("HIP07 ", 0, &hisi_pcie_ops),
+ HISI_QUAD_DOM("HIP07 ", 4, &hisi_pcie_ops),
+ HISI_QUAD_DOM("HIP07 ", 8, &hisi_pcie_ops),
+ HISI_QUAD_DOM("HIP07 ", 12, &hisi_pcie_ops),
+
+#define THUNDER_PEM_RES(addr, node) \
+ DEFINE_RES_MEM((addr) + ((u64) (node) << 44), 0x39 * SZ_16M)
+#define THUNDER_PEM_QUIRK(rev, node) \
+ { "CAVIUM", "THUNDERX", rev, 4 + (10 * (node)), MCFG_BUS_ANY, \
+ &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x88001f000000UL, node) }, \
+ { "CAVIUM", "THUNDERX", rev, 5 + (10 * (node)), MCFG_BUS_ANY, \
+ &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x884057000000UL, node) }, \
+ { "CAVIUM", "THUNDERX", rev, 6 + (10 * (node)), MCFG_BUS_ANY, \
+ &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x88808f000000UL, node) }, \
+ { "CAVIUM", "THUNDERX", rev, 7 + (10 * (node)), MCFG_BUS_ANY, \
+ &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x89001f000000UL, node) }, \
+ { "CAVIUM", "THUNDERX", rev, 8 + (10 * (node)), MCFG_BUS_ANY, \
+ &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x894057000000UL, node) }, \
+ { "CAVIUM", "THUNDERX", rev, 9 + (10 * (node)), MCFG_BUS_ANY, \
+ &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x89808f000000UL, node) }
+ /* SoC pass2.x */
+ THUNDER_PEM_QUIRK(1, 0),
+ THUNDER_PEM_QUIRK(1, 1),
+
+#define THUNDER_ECAM_QUIRK(rev, seg) \
+ { "CAVIUM", "THUNDERX", rev, seg, MCFG_BUS_ANY, \
+ &pci_thunder_ecam_ops }
+ /* SoC pass1.x */
+ THUNDER_PEM_QUIRK(2, 0), /* off-chip devices */
+ THUNDER_PEM_QUIRK(2, 1), /* off-chip devices */
+ THUNDER_ECAM_QUIRK(2, 0),
+ THUNDER_ECAM_QUIRK(2, 1),
+ THUNDER_ECAM_QUIRK(2, 2),
+ THUNDER_ECAM_QUIRK(2, 3),
+ THUNDER_ECAM_QUIRK(2, 10),
+ THUNDER_ECAM_QUIRK(2, 11),
+ THUNDER_ECAM_QUIRK(2, 12),
+ THUNDER_ECAM_QUIRK(2, 13),
+
+#define XGENE_V1_ECAM_MCFG(rev, seg) \
+ {"APM ", "XGENE ", rev, seg, MCFG_BUS_ANY, \
+ &xgene_v1_pcie_ecam_ops }
+#define XGENE_V2_ECAM_MCFG(rev, seg) \
+ {"APM ", "XGENE ", rev, seg, MCFG_BUS_ANY, \
+ &xgene_v2_pcie_ecam_ops }
+ /* X-Gene SoC with v1 PCIe controller */
+ XGENE_V1_ECAM_MCFG(1, 0),
+ XGENE_V1_ECAM_MCFG(1, 1),
+ XGENE_V1_ECAM_MCFG(1, 2),
+ XGENE_V1_ECAM_MCFG(1, 3),
+ XGENE_V1_ECAM_MCFG(1, 4),
+ XGENE_V1_ECAM_MCFG(2, 0),
+ XGENE_V1_ECAM_MCFG(2, 1),
+ XGENE_V1_ECAM_MCFG(2, 2),
+ XGENE_V1_ECAM_MCFG(2, 3),
+ XGENE_V1_ECAM_MCFG(2, 4),
+ /* X-Gene SoC with v2.1 PCIe controller */
+ XGENE_V2_ECAM_MCFG(3, 0),
+ XGENE_V2_ECAM_MCFG(3, 1),
+ /* X-Gene SoC with v2.2 PCIe controller */
+ XGENE_V2_ECAM_MCFG(4, 0),
+ XGENE_V2_ECAM_MCFG(4, 1),
+ XGENE_V2_ECAM_MCFG(4, 2),
+};
+
+static char mcfg_oem_id[ACPI_OEM_ID_SIZE];
+static char mcfg_oem_table_id[ACPI_OEM_TABLE_ID_SIZE];
+static u32 mcfg_oem_revision;
+
+static int pci_mcfg_quirk_matches(struct mcfg_fixup *f, u16 segment,
+ struct resource *bus_range)
+{
+ if (!memcmp(f->oem_id, mcfg_oem_id, ACPI_OEM_ID_SIZE) &&
+ !memcmp(f->oem_table_id, mcfg_oem_table_id,
+ ACPI_OEM_TABLE_ID_SIZE) &&
+ f->oem_revision == mcfg_oem_revision &&
+ f->segment == segment &&
+ resource_contains(&f->bus_range, bus_range))
+ return 1;
+
+ return 0;
+}
+#endif
+
+static void pci_mcfg_apply_quirks(struct acpi_pci_root *root,
+ struct resource *cfgres,
+ struct pci_ecam_ops **ecam_ops)
+{
+#ifdef CONFIG_PCI_QUIRKS
+ u16 segment = root->segment;
+ struct resource *bus_range = &root->secondary;
+ struct mcfg_fixup *f;
+ int i;
+
+ for (i = 0, f = mcfg_quirks; i < ARRAY_SIZE(mcfg_quirks); i++, f++) {
+ if (pci_mcfg_quirk_matches(f, segment, bus_range)) {
+ if (f->cfgres.start)
+ *cfgres = f->cfgres;
+ if (f->ops)
+ *ecam_ops = f->ops;
+ dev_info(&root->device->dev, "MCFG quirk: ECAM at %pR for %pR with %ps\n",
+ cfgres, bus_range, *ecam_ops);
+ return;
+ }
+ }
+#endif
+}
+
/* List to save MCFG entries */
static LIST_HEAD(pci_mcfg_list);
-phys_addr_t pci_mcfg_lookup(u16 seg, struct resource *bus_res)
+int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
+ struct pci_ecam_ops **ecam_ops)
{
+ struct pci_ecam_ops *ops = &pci_generic_ecam_ops;
+ struct resource *bus_res = &root->secondary;
+ u16 seg = root->segment;
struct mcfg_entry *e;
+ struct resource res;
+
+ /* Use address from _CBA if present, otherwise lookup MCFG */
+ if (root->mcfg_addr)
+ goto skip_lookup;
/*
* We expect exact match, unless MCFG entry end bus covers more than
@@ -45,10 +200,32 @@ phys_addr_t pci_mcfg_lookup(u16 seg, struct resource *bus_res)
*/
list_for_each_entry(e, &pci_mcfg_list, list) {
if (e->segment == seg && e->bus_start == bus_res->start &&
- e->bus_end >= bus_res->end)
- return e->addr;
+ e->bus_end >= bus_res->end) {
+ root->mcfg_addr = e->addr;
+ }
+
}
+skip_lookup:
+ memset(&res, 0, sizeof(res));
+ if (root->mcfg_addr) {
+ res.start = root->mcfg_addr + (bus_res->start << 20);
+ res.end = res.start + (resource_size(bus_res) << 20) - 1;
+ res.flags = IORESOURCE_MEM;
+ }
+
+ /*
+ * Allow quirks to override default ECAM ops and CFG resource
+ * range. This may even fabricate a CFG resource range in case
+ * MCFG does not have it. Invalid CFG start address means MCFG
+ * firmware bug or we need another quirk in array.
+ */
+ pci_mcfg_apply_quirks(root, &res, &ops);
+ if (!res.start)
+ return -ENXIO;
+
+ *cfgres = res;
+ *ecam_ops = ops;
return 0;
}
@@ -79,6 +256,13 @@ static __init int pci_mcfg_parse(struct acpi_table_header *header)
list_add(&e->list, &pci_mcfg_list);
}
+#ifdef CONFIG_PCI_QUIRKS
+ /* Save MCFG IDs and revision for quirks matching */
+ memcpy(mcfg_oem_id, header->oem_id, ACPI_OEM_ID_SIZE);
+ memcpy(mcfg_oem_table_id, header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
+ mcfg_oem_revision = header->oem_revision;
+#endif
+
pr_info("MCFG table detected, %d entries\n", n);
return 0;
}
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 56241eb..cb57962 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -664,3 +664,60 @@ int acpi_dev_filter_resource_type(struct acpi_resource *ares,
return (type & types) ? 0 : 1;
}
EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
+
+static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res)
+{
+ struct list_head resource_list;
+ struct resource_entry *rentry;
+ int ret, found = 0;
+
+ INIT_LIST_HEAD(&resource_list);
+ ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
+ if (ret < 0)
+ return 0;
+
+ list_for_each_entry(rentry, &resource_list, node) {
+ if (resource_contains(rentry->res, res)) {
+ found = 1;
+ break;
+ }
+
+ }
+
+ acpi_dev_free_resource_list(&resource_list);
+ return found;
+}
+
+static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth,
+ void *context, void **ret)
+{
+ struct resource *res = context;
+ struct acpi_device **consumer = (struct acpi_device **) ret;
+ struct acpi_device *adev;
+
+ if (acpi_bus_get_device(handle, &adev))
+ return AE_OK;
+
+ if (acpi_dev_consumes_res(adev, res)) {
+ *consumer = adev;
+ return AE_CTRL_TERMINATE;
+ }
+
+ return AE_OK;
+}
+
+/**
+ * acpi_resource_consumer - Find the ACPI device that consumes @res.
+ * @res: Resource to search for.
+ *
+ * Search the current resource settings (_CRS) of every ACPI device node
+ * for @res. If we find an ACPI device whose _CRS includes @res, return
+ * it. Otherwise, return NULL.
+ */
+struct acpi_device *acpi_resource_consumer(struct resource *res)
+{
+ struct acpi_device *consumer = NULL;
+
+ acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer);
+ return consumer;
+}
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 7183ac4..62788b7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -4012,49 +4012,51 @@ int mlx4_restart_one(struct pci_dev *pdev)
return err;
}
+#define MLX_SP(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_FORCE_SENSE_PORT }
+#define MLX_VF(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_IS_VF }
+#define MLX_GN(id) { PCI_VDEVICE(MELLANOX, id), 0 }
+
static const struct pci_device_id mlx4_pci_table[] = {
- /* MT25408 "Hermon" SDR */
- { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25408 "Hermon" DDR */
- { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25408 "Hermon" QDR */
- { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25408 "Hermon" DDR PCIe gen2 */
- { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25408 "Hermon" QDR PCIe gen2 */
- { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25408 "Hermon" EN 10GigE */
- { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
- { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25458 ConnectX EN 10GBASE-T 10GigE */
- { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
- { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT26468 ConnectX EN 10GigE PCIe gen2*/
- { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
- { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT26478 ConnectX2 40GigE PCIe gen2 */
- { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
- /* MT25400 Family [ConnectX-2 Virtual Function] */
- { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
+ /* MT25408 "Hermon" */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_SDR), /* SDR */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR), /* DDR */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR), /* QDR */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2), /* DDR Gen2 */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2), /* QDR Gen2 */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN), /* EN 10GigE */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2), /* EN 10GigE Gen2 */
+ /* MT25458 ConnectX EN 10GBASE-T */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN),
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2), /* Gen2 */
+ /* MT26468 ConnectX EN 10GigE PCIe Gen2*/
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2),
+ /* MT26438 ConnectX EN 40GigE PCIe Gen2 5GT/s */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2),
+ /* MT26478 ConnectX2 40GigE PCIe Gen2 */
+ MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX2),
+ /* MT25400 Family [ConnectX-2] */
+ MLX_VF(0x1002), /* Virtual Function */
/* MT27500 Family [ConnectX-3] */
- { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
- /* MT27500 Family [ConnectX-3 Virtual Function] */
- { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
- { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
- { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
- { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
- { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
- { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
- { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
- { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
- { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
- { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
- { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
- { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
- { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
+ MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3),
+ MLX_VF(0x1004), /* Virtual Function */
+ MLX_GN(0x1005), /* MT27510 Family */
+ MLX_GN(0x1006), /* MT27511 Family */
+ MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO), /* MT27520 Family */
+ MLX_GN(0x1008), /* MT27521 Family */
+ MLX_GN(0x1009), /* MT27530 Family */
+ MLX_GN(0x100a), /* MT27531 Family */
+ MLX_GN(0x100b), /* MT27540 Family */
+ MLX_GN(0x100c), /* MT27541 Family */
+ MLX_GN(0x100d), /* MT27550 Family */
+ MLX_GN(0x100e), /* MT27551 Family */
+ MLX_GN(0x100f), /* MT27560 Family */
+ MLX_GN(0x1010), /* MT27561 Family */
+
+ /*
+ * See the mellanox_check_broken_intx_masking() quirk when
+ * adding devices
+ */
+
{ 0, }
};
diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c
index b58be12..0ee42c3 100644
--- a/drivers/of/of_pci.c
+++ b/drivers/of/of_pci.c
@@ -120,6 +120,27 @@ int of_get_pci_domain_nr(struct device_node *node)
EXPORT_SYMBOL_GPL(of_get_pci_domain_nr);
/**
+ * This function will try to find the limitation of link speed by finding
+ * a property called "max-link-speed" of the given device node.
+ *
+ * @node: device tree node with the max link speed information
+ *
+ * Returns the associated max link speed from DT, or a negative value if the
+ * required property is not found or is invalid.
+ */
+int of_pci_get_max_link_speed(struct device_node *node)
+{
+ u32 max_link_speed;
+
+ if (of_property_read_u32(node, "max-link-speed", &max_link_speed) ||
+ max_link_speed > 4)
+ return -EINVAL;
+
+ return max_link_speed;
+}
+EXPORT_SYMBOL_GPL(of_pci_get_max_link_speed);
+
+/**
* of_pci_check_probe_only - Setup probe only mode if linux,pci-probe-only
* is present and valid
*/
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index d11cdbb..db23954 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -142,10 +142,22 @@ int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn,
if (size == 4) {
writel(val, addr);
return PCIBIOS_SUCCESSFUL;
- } else {
- mask = ~(((1 << (size * 8)) - 1) << ((where & 0x3) * 8));
}
+ /*
+ * In general, hardware that supports only 32-bit writes on PCI is
+ * not spec-compliant. For example, software may perform a 16-bit
+ * write. If the hardware only supports 32-bit accesses, we must
+ * do a 32-bit read, merge in the 16 bits we intend to write,
+ * followed by a 32-bit write. If the 16 bits we *don't* intend to
+ * write happen to have any RW1C (write-one-to-clear) bits set, we
+ * just inadvertently cleared something we shouldn't have.
+ */
+ dev_warn_ratelimited(&bus->dev, "%d-byte config write to %04x:%02x:%02x.%d offset %#x may corrupt adjacent RW1C bits\n",
+ size, pci_domain_nr(bus), bus->number,
+ PCI_SLOT(devfn), PCI_FUNC(devfn), where);
+
+ mask = ~(((1 << (size * 8)) - 1) << ((where & 0x3) * 8));
tmp = readl(addr) & mask;
tmp |= val << ((where & 0x3) * 8);
writel(tmp, addr);
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index c288e5a..bc56cf1 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -320,7 +320,7 @@ void pci_bus_add_device(struct pci_dev *dev)
pci_fixup_device(pci_fixup_final, dev);
pci_create_sysfs_dev_files(dev);
pci_proc_attach_device(dev);
- pci_bridge_d3_device_changed(dev);
+ pci_bridge_d3_update(dev);
dev->match_driver = true;
retval = device_attach(&dev->dev);
diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c
index 43ed08d..2fee61b 100644
--- a/drivers/pci/ecam.c
+++ b/drivers/pci/ecam.c
@@ -162,3 +162,15 @@ struct pci_ecam_ops pci_generic_ecam_ops = {
.write = pci_generic_config_write,
}
};
+
+#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
+/* ECAM ops for 32-bit access only (non-compliant) */
+struct pci_ecam_ops pci_32b_ops = {
+ .bus_shift = 20,
+ .pci_ops = {
+ .map_bus = pci_ecam_map_bus,
+ .read = pci_generic_config_read32,
+ .write = pci_generic_config_write32,
+ }
+};
+#endif
diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig
index d7e7c0a..1fb5518 100644
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/host/Kconfig
@@ -133,8 +133,8 @@
config PCI_XGENE
bool "X-Gene PCIe controller"
- depends on ARCH_XGENE
- depends on OF
+ depends on ARM64
+ depends on OF || (ACPI && PCI_QUIRKS)
select PCIEPORTBUS
help
Say Y here if you want internal PCI support on APM X-Gene SoC.
@@ -240,14 +240,16 @@
config PCI_HOST_THUNDER_PEM
bool "Cavium Thunder PCIe controller to off-chip devices"
- depends on OF && ARM64
+ depends on ARM64
+ depends on OF || (ACPI && PCI_QUIRKS)
select PCI_HOST_COMMON
help
Say Y here if you want PCIe support for CN88XX Cavium Thunder SoCs.
config PCI_HOST_THUNDER_ECAM
bool "Cavium Thunder ECAM controller to on-chip devices on pass-1.x silicon"
- depends on OF && ARM64
+ depends on ARM64
+ depends on OF || (ACPI && PCI_QUIRKS)
select PCI_HOST_COMMON
help
Say Y here if you want ECAM support for CN88XX-Pass-1.x Cavium Thunder SoCs.
diff --git a/drivers/pci/host/Makefile b/drivers/pci/host/Makefile
index 084cb49..bfe3179 100644
--- a/drivers/pci/host/Makefile
+++ b/drivers/pci/host/Makefile
@@ -15,7 +15,6 @@
obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o
obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o
obj-$(CONFIG_PCIE_XILINX_NWL) += pcie-xilinx-nwl.o
-obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
obj-$(CONFIG_PCI_XGENE_MSI) += pci-xgene-msi.o
obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o
@@ -25,11 +24,23 @@
obj-$(CONFIG_PCIE_IPROC_BCMA) += pcie-iproc-bcma.o
obj-$(CONFIG_PCIE_ALTERA) += pcie-altera.o
obj-$(CONFIG_PCIE_ALTERA_MSI) += pcie-altera-msi.o
-obj-$(CONFIG_PCI_HISI) += pcie-hisi.o
obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
-obj-$(CONFIG_PCI_HOST_THUNDER_ECAM) += pci-thunder-ecam.o
-obj-$(CONFIG_PCI_HOST_THUNDER_PEM) += pci-thunder-pem.o
obj-$(CONFIG_PCIE_ARMADA_8K) += pcie-armada8k.o
obj-$(CONFIG_PCIE_ARTPEC6) += pcie-artpec6.o
obj-$(CONFIG_PCIE_ROCKCHIP) += pcie-rockchip.o
obj-$(CONFIG_VMD) += vmd.o
+
+# The following drivers are for devices that use the generic ACPI
+# pci_root.c driver but don't support standard ECAM config access.
+# They contain MCFG quirks to replace the generic ECAM accessors with
+# device-specific ones that are shared with the DT driver.
+
+# The ACPI driver is generic and should not require driver-specific
+# config options to be enabled, so we always build these drivers on
+# ARM64 and use internal ifdefs to only build the pieces we need
+# depending on whether ACPI, the DT driver, or both are enabled.
+
+obj-$(CONFIG_ARM64) += pcie-hisi.o
+obj-$(CONFIG_ARM64) += pci-thunder-ecam.o
+obj-$(CONFIG_ARM64) += pci-thunder-pem.o
+obj-$(CONFIG_ARM64) += pci-xgene.o
diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
index 763ff87..3efcc7b 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -378,6 +378,8 @@ struct hv_pcibus_device {
struct msi_domain_info msi_info;
struct msi_controller msi_chip;
struct irq_domain *irq_domain;
+ struct retarget_msi_interrupt retarget_msi_interrupt_params;
+ spinlock_t retarget_msi_interrupt_lock;
};
/*
@@ -755,7 +757,7 @@ static int hv_set_affinity(struct irq_data *data, const struct cpumask *dest,
return parent->chip->irq_set_affinity(parent, dest, force);
}
-void hv_irq_mask(struct irq_data *data)
+static void hv_irq_mask(struct irq_data *data)
{
pci_msi_mask_irq(data);
}
@@ -770,38 +772,44 @@ void hv_irq_mask(struct irq_data *data)
* is built out of this PCI bus's instance GUID and the function
* number of the device.
*/
-void hv_irq_unmask(struct irq_data *data)
+static void hv_irq_unmask(struct irq_data *data)
{
struct msi_desc *msi_desc = irq_data_get_msi_desc(data);
struct irq_cfg *cfg = irqd_cfg(data);
- struct retarget_msi_interrupt params;
+ struct retarget_msi_interrupt *params;
struct hv_pcibus_device *hbus;
struct cpumask *dest;
struct pci_bus *pbus;
struct pci_dev *pdev;
int cpu;
+ unsigned long flags;
dest = irq_data_get_affinity_mask(data);
pdev = msi_desc_to_pci_dev(msi_desc);
pbus = pdev->bus;
hbus = container_of(pbus->sysdata, struct hv_pcibus_device, sysdata);
- memset(¶ms, 0, sizeof(params));
- params.partition_id = HV_PARTITION_ID_SELF;
- params.source = 1; /* MSI(-X) */
- params.address = msi_desc->msg.address_lo;
- params.data = msi_desc->msg.data;
- params.device_id = (hbus->hdev->dev_instance.b[5] << 24) |
+ spin_lock_irqsave(&hbus->retarget_msi_interrupt_lock, flags);
+
+ params = &hbus->retarget_msi_interrupt_params;
+ memset(params, 0, sizeof(*params));
+ params->partition_id = HV_PARTITION_ID_SELF;
+ params->source = 1; /* MSI(-X) */
+ params->address = msi_desc->msg.address_lo;
+ params->data = msi_desc->msg.data;
+ params->device_id = (hbus->hdev->dev_instance.b[5] << 24) |
(hbus->hdev->dev_instance.b[4] << 16) |
(hbus->hdev->dev_instance.b[7] << 8) |
(hbus->hdev->dev_instance.b[6] & 0xf8) |
PCI_FUNC(pdev->devfn);
- params.vector = cfg->vector;
+ params->vector = cfg->vector;
for_each_cpu_and(cpu, dest, cpu_online_mask)
- params.vp_mask |= (1ULL << vmbus_cpu_number_to_vp_number(cpu));
+ params->vp_mask |= (1ULL << vmbus_cpu_number_to_vp_number(cpu));
- hv_do_hypercall(HVCALL_RETARGET_INTERRUPT, ¶ms, NULL);
+ hv_do_hypercall(HVCALL_RETARGET_INTERRUPT, params, NULL);
+
+ spin_unlock_irqrestore(&hbus->retarget_msi_interrupt_lock, flags);
pci_msi_unmask_irq(data);
}
@@ -1271,9 +1279,9 @@ static struct hv_pci_dev *new_pcichild_device(struct hv_pcibus_device *hbus,
struct hv_pci_dev *hpdev;
struct pci_child_message *res_req;
struct q_res_req_compl comp_pkt;
- union {
- struct pci_packet init_packet;
- u8 buffer[0x100];
+ struct {
+ struct pci_packet init_packet;
+ u8 buffer[sizeof(struct pci_child_message)];
} pkt;
unsigned long flags;
int ret;
@@ -1582,6 +1590,10 @@ static void hv_eject_device_work(struct work_struct *work)
pci_dev_put(pdev);
}
+ spin_lock_irqsave(&hpdev->hbus->device_list_lock, flags);
+ list_del(&hpdev->list_entry);
+ spin_unlock_irqrestore(&hpdev->hbus->device_list_lock, flags);
+
memset(&ctxt, 0, sizeof(ctxt));
ejct_pkt = (struct pci_eject_response *)&ctxt.pkt.message;
ejct_pkt->message_type.type = PCI_EJECTION_COMPLETE;
@@ -1590,10 +1602,6 @@ static void hv_eject_device_work(struct work_struct *work)
sizeof(*ejct_pkt), (unsigned long)&ctxt.pkt,
VM_PKT_DATA_INBAND, 0);
- spin_lock_irqsave(&hpdev->hbus->device_list_lock, flags);
- list_del(&hpdev->list_entry);
- spin_unlock_irqrestore(&hpdev->hbus->device_list_lock, flags);
-
put_pcichild(hpdev, hv_pcidev_ref_childlist);
put_pcichild(hpdev, hv_pcidev_ref_pnp);
put_hvpcibus(hpdev->hbus);
@@ -2186,6 +2194,7 @@ static int hv_pci_probe(struct hv_device *hdev,
INIT_LIST_HEAD(&hbus->resources_for_children);
spin_lock_init(&hbus->config_lock);
spin_lock_init(&hbus->device_list_lock);
+ spin_lock_init(&hbus->retarget_msi_interrupt_lock);
sema_init(&hbus->enum_sem, 1);
init_completion(&hbus->remove_event);
@@ -2266,24 +2275,32 @@ static int hv_pci_probe(struct hv_device *hdev,
return ret;
}
-/**
- * hv_pci_remove() - Remove routine for this VMBus channel
- * @hdev: VMBus's tracking struct for this root PCI bus
- *
- * Return: 0 on success, -errno on failure
- */
-static int hv_pci_remove(struct hv_device *hdev)
+static void hv_pci_bus_exit(struct hv_device *hdev)
{
- int ret;
- struct hv_pcibus_device *hbus;
- union {
+ struct hv_pcibus_device *hbus = hv_get_drvdata(hdev);
+ struct {
struct pci_packet teardown_packet;
- u8 buffer[0x100];
+ u8 buffer[sizeof(struct pci_message)];
} pkt;
struct pci_bus_relations relations;
struct hv_pci_compl comp_pkt;
+ int ret;
- hbus = hv_get_drvdata(hdev);
+ /*
+ * After the host sends the RESCIND_CHANNEL message, it doesn't
+ * access the per-channel ringbuffer any longer.
+ */
+ if (hdev->channel->rescind)
+ return;
+
+ /* Delete any children which might still exist. */
+ memset(&relations, 0, sizeof(relations));
+ hv_pci_devices_present(hbus, &relations);
+
+ ret = hv_send_resources_released(hdev);
+ if (ret)
+ dev_err(&hdev->device,
+ "Couldn't send resources released packet(s)\n");
memset(&pkt.teardown_packet, 0, sizeof(pkt.teardown_packet));
init_completion(&comp_pkt.host_event);
@@ -2298,7 +2315,19 @@ static int hv_pci_remove(struct hv_device *hdev)
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (!ret)
wait_for_completion_timeout(&comp_pkt.host_event, 10 * HZ);
+}
+/**
+ * hv_pci_remove() - Remove routine for this VMBus channel
+ * @hdev: VMBus's tracking struct for this root PCI bus
+ *
+ * Return: 0 on success, -errno on failure
+ */
+static int hv_pci_remove(struct hv_device *hdev)
+{
+ struct hv_pcibus_device *hbus;
+
+ hbus = hv_get_drvdata(hdev);
if (hbus->state == hv_pcibus_installed) {
/* Remove the bus from PCI's point of view. */
pci_lock_rescan_remove();
@@ -2307,17 +2336,10 @@ static int hv_pci_remove(struct hv_device *hdev)
pci_unlock_rescan_remove();
}
- ret = hv_send_resources_released(hdev);
- if (ret)
- dev_err(&hdev->device,
- "Couldn't send resources released packet(s)\n");
+ hv_pci_bus_exit(hdev);
vmbus_close(hdev->channel);
- /* Delete any children which might still exist. */
- memset(&relations, 0, sizeof(relations));
- hv_pci_devices_present(hbus, &relations);
-
iounmap(hbus->cfg_addr);
hv_free_config_window(hbus);
pci_free_resource_list(&hbus->resources_for_children);
diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/host/pci-layerscape.c
index 2cb7315..ca48ceb 100644
--- a/drivers/pci/host/pci-layerscape.c
+++ b/drivers/pci/host/pci-layerscape.c
@@ -35,12 +35,10 @@
#define PCIE_STRFMR1 0x71c /* Symbol Timer & Filter Mask Register1 */
#define PCIE_DBI_RO_WR_EN 0x8bc /* DBI Read-Only Write Enable Register */
-/* PEX LUT registers */
-#define PCIE_LUT_DBG 0x7FC /* PEX LUT Debug Register */
-
struct ls_pcie_drvdata {
u32 lut_offset;
u32 ltssm_shift;
+ u32 lut_dbg;
struct pcie_host_ops *ops;
};
@@ -134,7 +132,7 @@ static int ls_pcie_link_up(struct pcie_port *pp)
struct ls_pcie *pcie = to_ls_pcie(pp);
u32 state;
- state = (ioread32(pcie->lut + PCIE_LUT_DBG) >>
+ state = (ioread32(pcie->lut + pcie->drvdata->lut_dbg) >>
pcie->drvdata->ltssm_shift) &
LTSSM_STATE_MASK;
@@ -196,18 +194,28 @@ static struct ls_pcie_drvdata ls1021_drvdata = {
static struct ls_pcie_drvdata ls1043_drvdata = {
.lut_offset = 0x10000,
.ltssm_shift = 24,
+ .lut_dbg = 0x7fc,
+ .ops = &ls_pcie_host_ops,
+};
+
+static struct ls_pcie_drvdata ls1046_drvdata = {
+ .lut_offset = 0x80000,
+ .ltssm_shift = 24,
+ .lut_dbg = 0x407fc,
.ops = &ls_pcie_host_ops,
};
static struct ls_pcie_drvdata ls2080_drvdata = {
.lut_offset = 0x80000,
.ltssm_shift = 0,
+ .lut_dbg = 0x7fc,
.ops = &ls_pcie_host_ops,
};
static const struct of_device_id ls_pcie_of_match[] = {
{ .compatible = "fsl,ls1021a-pcie", .data = &ls1021_drvdata },
{ .compatible = "fsl,ls1043a-pcie", .data = &ls1043_drvdata },
+ { .compatible = "fsl,ls1046a-pcie", .data = &ls1046_drvdata },
{ .compatible = "fsl,ls2080a-pcie", .data = &ls2080_drvdata },
{ .compatible = "fsl,ls2085a-pcie", .data = &ls2080_drvdata },
{ },
@@ -251,10 +259,8 @@ static int __init ls_pcie_probe(struct platform_device *pdev)
dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
pcie->pp.dbi_base = devm_ioremap_resource(dev, dbi_base);
- if (IS_ERR(pcie->pp.dbi_base)) {
- dev_err(dev, "missing *regs* space\n");
+ if (IS_ERR(pcie->pp.dbi_base))
return PTR_ERR(pcie->pp.dbi_base);
- }
pcie->drvdata = match->data;
pcie->lut = pcie->pp.dbi_base + pcie->drvdata->lut_offset;
diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/host/pci-thunder-ecam.c
index d50a3dc..3f54a43 100644
--- a/drivers/pci/host/pci-thunder-ecam.c
+++ b/drivers/pci/host/pci-thunder-ecam.c
@@ -14,6 +14,8 @@
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
+#if defined(CONFIG_PCI_HOST_THUNDER_ECAM) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
+
static void set_val(u32 v, int where, int size, u32 *val)
{
int shift = (where & 3) * 8;
@@ -346,7 +348,7 @@ static int thunder_ecam_config_write(struct pci_bus *bus, unsigned int devfn,
return pci_generic_config_write(bus, devfn, where, size, val);
}
-static struct pci_ecam_ops pci_thunder_ecam_ops = {
+struct pci_ecam_ops pci_thunder_ecam_ops = {
.bus_shift = 20,
.pci_ops = {
.map_bus = pci_ecam_map_bus,
@@ -355,6 +357,8 @@ static struct pci_ecam_ops pci_thunder_ecam_ops = {
}
};
+#ifdef CONFIG_PCI_HOST_THUNDER_ECAM
+
static const struct of_device_id thunder_ecam_of_match[] = {
{ .compatible = "cavium,pci-host-thunder-ecam" },
{ },
@@ -373,3 +377,6 @@ static struct platform_driver thunder_ecam_driver = {
.probe = thunder_ecam_probe,
};
builtin_platform_driver(thunder_ecam_driver);
+
+#endif
+#endif
diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/host/pci-thunder-pem.c
index 6abaf80..af722eb 100644
--- a/drivers/pci/host/pci-thunder-pem.c
+++ b/drivers/pci/host/pci-thunder-pem.c
@@ -18,8 +18,12 @@
#include <linux/init.h>
#include <linux/of_address.h>
#include <linux/of_pci.h>
+#include <linux/pci-acpi.h>
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
+#include "../pci.h"
+
+#if defined(CONFIG_PCI_HOST_THUNDER_PEM) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
#define PEM_CFG_WR 0x28
#define PEM_CFG_RD 0x30
@@ -284,35 +288,16 @@ static int thunder_pem_config_write(struct pci_bus *bus, unsigned int devfn,
return pci_generic_config_write(bus, devfn, where, size, val);
}
-static int thunder_pem_init(struct pci_config_window *cfg)
+static int thunder_pem_init(struct device *dev, struct pci_config_window *cfg,
+ struct resource *res_pem)
{
- struct device *dev = cfg->parent;
- resource_size_t bar4_start;
- struct resource *res_pem;
struct thunder_pem_pci *pem_pci;
- struct platform_device *pdev;
-
- /* Only OF support for now */
- if (!dev->of_node)
- return -EINVAL;
+ resource_size_t bar4_start;
pem_pci = devm_kzalloc(dev, sizeof(*pem_pci), GFP_KERNEL);
if (!pem_pci)
return -ENOMEM;
- pdev = to_platform_device(dev);
-
- /*
- * The second register range is the PEM bridge to the PCIe
- * bus. It has a different config access method than those
- * devices behind the bridge.
- */
- res_pem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (!res_pem) {
- dev_err(dev, "missing \"reg[1]\"property\n");
- return -EINVAL;
- }
-
pem_pci->pem_reg_base = devm_ioremap(dev, res_pem->start, 0x10000);
if (!pem_pci->pem_reg_base)
return -ENOMEM;
@@ -332,9 +317,69 @@ static int thunder_pem_init(struct pci_config_window *cfg)
return 0;
}
+#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
+
+static int thunder_pem_acpi_init(struct pci_config_window *cfg)
+{
+ struct device *dev = cfg->parent;
+ struct acpi_device *adev = to_acpi_device(dev);
+ struct acpi_pci_root *root = acpi_driver_data(adev);
+ struct resource *res_pem;
+ int ret;
+
+ res_pem = devm_kzalloc(&adev->dev, sizeof(*res_pem), GFP_KERNEL);
+ if (!res_pem)
+ return -ENOMEM;
+
+ ret = acpi_get_rc_resources(dev, "THRX0002", root->segment, res_pem);
+ if (ret) {
+ dev_err(dev, "can't get rc base address\n");
+ return ret;
+ }
+
+ return thunder_pem_init(dev, cfg, res_pem);
+}
+
+struct pci_ecam_ops thunder_pem_ecam_ops = {
+ .bus_shift = 24,
+ .init = thunder_pem_acpi_init,
+ .pci_ops = {
+ .map_bus = pci_ecam_map_bus,
+ .read = thunder_pem_config_read,
+ .write = thunder_pem_config_write,
+ }
+};
+
+#endif
+
+#ifdef CONFIG_PCI_HOST_THUNDER_PEM
+
+static int thunder_pem_platform_init(struct pci_config_window *cfg)
+{
+ struct device *dev = cfg->parent;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct resource *res_pem;
+
+ if (!dev->of_node)
+ return -EINVAL;
+
+ /*
+ * The second register range is the PEM bridge to the PCIe
+ * bus. It has a different config access method than those
+ * devices behind the bridge.
+ */
+ res_pem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!res_pem) {
+ dev_err(dev, "missing \"reg[1]\"property\n");
+ return -EINVAL;
+ }
+
+ return thunder_pem_init(dev, cfg, res_pem);
+}
+
static struct pci_ecam_ops pci_thunder_pem_ops = {
.bus_shift = 24,
- .init = thunder_pem_init,
+ .init = thunder_pem_platform_init,
.pci_ops = {
.map_bus = pci_ecam_map_bus,
.read = thunder_pem_config_read,
@@ -360,3 +405,6 @@ static struct platform_driver thunder_pem_driver = {
.probe = thunder_pem_probe,
};
builtin_platform_driver(thunder_pem_driver);
+
+#endif
+#endif
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index 1de23d7..7c3b54b 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -27,6 +27,8 @@
#include <linux/of_irq.h>
#include <linux/of_pci.h>
#include <linux/pci.h>
+#include <linux/pci-acpi.h>
+#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@@ -64,7 +66,9 @@
/* PCIe IP version */
#define XGENE_PCIE_IP_VER_UNKN 0
#define XGENE_PCIE_IP_VER_1 1
+#define XGENE_PCIE_IP_VER_2 2
+#if defined(CONFIG_PCI_XGENE) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
struct xgene_pcie_port {
struct device_node *node;
struct device *dev;
@@ -91,13 +95,24 @@ static inline u32 pcie_bar_low_val(u32 addr, u32 flags)
return (addr & PCI_BASE_ADDRESS_MEM_MASK) | flags;
}
+static inline struct xgene_pcie_port *pcie_bus_to_port(struct pci_bus *bus)
+{
+ struct pci_config_window *cfg;
+
+ if (acpi_disabled)
+ return (struct xgene_pcie_port *)(bus->sysdata);
+
+ cfg = bus->sysdata;
+ return (struct xgene_pcie_port *)(cfg->priv);
+}
+
/*
* When the address bit [17:16] is 2'b01, the Configuration access will be
* treated as Type 1 and it will be forwarded to external PCIe device.
*/
static void __iomem *xgene_pcie_get_cfg_base(struct pci_bus *bus)
{
- struct xgene_pcie_port *port = bus->sysdata;
+ struct xgene_pcie_port *port = pcie_bus_to_port(bus);
if (bus->number >= (bus->primary + 1))
return port->cfg_base + AXI_EP_CFG_ACCESS;
@@ -111,7 +126,7 @@ static void __iomem *xgene_pcie_get_cfg_base(struct pci_bus *bus)
*/
static void xgene_pcie_set_rtdid_reg(struct pci_bus *bus, uint devfn)
{
- struct xgene_pcie_port *port = bus->sysdata;
+ struct xgene_pcie_port *port = pcie_bus_to_port(bus);
unsigned int b, d, f;
u32 rtdid_val = 0;
@@ -158,7 +173,7 @@ static void __iomem *xgene_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
static int xgene_pcie_config_read32(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 *val)
{
- struct xgene_pcie_port *port = bus->sysdata;
+ struct xgene_pcie_port *port = pcie_bus_to_port(bus);
if (pci_generic_config_read32(bus, devfn, where & ~0x3, 4, val) !=
PCIBIOS_SUCCESSFUL)
@@ -182,13 +197,103 @@ static int xgene_pcie_config_read32(struct pci_bus *bus, unsigned int devfn,
return PCIBIOS_SUCCESSFUL;
}
+#endif
-static struct pci_ops xgene_pcie_ops = {
- .map_bus = xgene_pcie_map_bus,
- .read = xgene_pcie_config_read32,
- .write = pci_generic_config_write32,
+#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
+static int xgene_get_csr_resource(struct acpi_device *adev,
+ struct resource *res)
+{
+ struct device *dev = &adev->dev;
+ struct resource_entry *entry;
+ struct list_head list;
+ unsigned long flags;
+ int ret;
+
+ INIT_LIST_HEAD(&list);
+ flags = IORESOURCE_MEM;
+ ret = acpi_dev_get_resources(adev, &list,
+ acpi_dev_filter_resource_type_cb,
+ (void *) flags);
+ if (ret < 0) {
+ dev_err(dev, "failed to parse _CRS method, error code %d\n",
+ ret);
+ return ret;
+ }
+
+ if (ret == 0) {
+ dev_err(dev, "no IO and memory resources present in _CRS\n");
+ return -EINVAL;
+ }
+
+ entry = list_first_entry(&list, struct resource_entry, node);
+ *res = *entry->res;
+ acpi_dev_free_resource_list(&list);
+ return 0;
+}
+
+static int xgene_pcie_ecam_init(struct pci_config_window *cfg, u32 ipversion)
+{
+ struct device *dev = cfg->parent;
+ struct acpi_device *adev = to_acpi_device(dev);
+ struct xgene_pcie_port *port;
+ struct resource csr;
+ int ret;
+
+ port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
+ if (!port)
+ return -ENOMEM;
+
+ ret = xgene_get_csr_resource(adev, &csr);
+ if (ret) {
+ dev_err(dev, "can't get CSR resource\n");
+ kfree(port);
+ return ret;
+ }
+ port->csr_base = devm_ioremap_resource(dev, &csr);
+ if (IS_ERR(port->csr_base)) {
+ kfree(port);
+ return -ENOMEM;
+ }
+
+ port->cfg_base = cfg->win;
+ port->version = ipversion;
+
+ cfg->priv = port;
+ return 0;
+}
+
+static int xgene_v1_pcie_ecam_init(struct pci_config_window *cfg)
+{
+ return xgene_pcie_ecam_init(cfg, XGENE_PCIE_IP_VER_1);
+}
+
+struct pci_ecam_ops xgene_v1_pcie_ecam_ops = {
+ .bus_shift = 16,
+ .init = xgene_v1_pcie_ecam_init,
+ .pci_ops = {
+ .map_bus = xgene_pcie_map_bus,
+ .read = xgene_pcie_config_read32,
+ .write = pci_generic_config_write,
+ }
};
+static int xgene_v2_pcie_ecam_init(struct pci_config_window *cfg)
+{
+ return xgene_pcie_ecam_init(cfg, XGENE_PCIE_IP_VER_2);
+}
+
+struct pci_ecam_ops xgene_v2_pcie_ecam_ops = {
+ .bus_shift = 16,
+ .init = xgene_v2_pcie_ecam_init,
+ .pci_ops = {
+ .map_bus = xgene_pcie_map_bus,
+ .read = xgene_pcie_config_read32,
+ .write = pci_generic_config_write,
+ }
+};
+#endif
+
+#if defined(CONFIG_PCI_XGENE)
static u64 xgene_pcie_set_ib_mask(struct xgene_pcie_port *port, u32 addr,
u32 flags, u64 size)
{
@@ -521,6 +626,12 @@ static int xgene_pcie_setup(struct xgene_pcie_port *port,
return 0;
}
+static struct pci_ops xgene_pcie_ops = {
+ .map_bus = xgene_pcie_map_bus,
+ .read = xgene_pcie_config_read32,
+ .write = pci_generic_config_write32,
+};
+
static int xgene_pcie_probe_bridge(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -591,3 +702,4 @@ static struct platform_driver xgene_pcie_driver = {
.probe = xgene_pcie_probe_bridge,
};
builtin_platform_driver(xgene_pcie_driver);
+#endif
diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c
index b0ac4df..0c15402 100644
--- a/drivers/pci/host/pcie-altera.c
+++ b/drivers/pci/host/pcie-altera.c
@@ -550,10 +550,8 @@ static int altera_pcie_parse_dt(struct altera_pcie *pcie)
cra = platform_get_resource_byname(pdev, IORESOURCE_MEM, "Cra");
pcie->cra_base = devm_ioremap_resource(dev, cra);
- if (IS_ERR(pcie->cra_base)) {
- dev_err(dev, "failed to map cra memory\n");
+ if (IS_ERR(pcie->cra_base))
return PTR_ERR(pcie->cra_base);
- }
/* setup IRQ */
pcie->irq = platform_get_irq(pdev, 0);
@@ -641,8 +639,4 @@ static struct platform_driver altera_pcie_driver = {
},
};
-static int altera_pcie_init(void)
-{
- return platform_driver_register(&altera_pcie_driver);
-}
-device_initcall(altera_pcie_init);
+builtin_platform_driver(altera_pcie_driver);
diff --git a/drivers/pci/host/pcie-hisi.c b/drivers/pci/host/pcie-hisi.c
index 56154c2..a301a71 100644
--- a/drivers/pci/host/pcie-hisi.c
+++ b/drivers/pci/host/pcie-hisi.c
@@ -18,7 +18,106 @@
#include <linux/of_pci.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
+#include <linux/pci.h>
+#include <linux/pci-acpi.h>
+#include <linux/pci-ecam.h>
#include <linux/regmap.h>
+#include "../pci.h"
+
+#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
+
+static int hisi_pcie_acpi_rd_conf(struct pci_bus *bus, u32 devfn, int where,
+ int size, u32 *val)
+{
+ struct pci_config_window *cfg = bus->sysdata;
+ int dev = PCI_SLOT(devfn);
+
+ if (bus->number == cfg->busr.start) {
+ /* access only one slot on each root port */
+ if (dev > 0)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ else
+ return pci_generic_config_read32(bus, devfn, where,
+ size, val);
+ }
+
+ return pci_generic_config_read(bus, devfn, where, size, val);
+}
+
+static int hisi_pcie_acpi_wr_conf(struct pci_bus *bus, u32 devfn,
+ int where, int size, u32 val)
+{
+ struct pci_config_window *cfg = bus->sysdata;
+ int dev = PCI_SLOT(devfn);
+
+ if (bus->number == cfg->busr.start) {
+ /* access only one slot on each root port */
+ if (dev > 0)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ else
+ return pci_generic_config_write32(bus, devfn, where,
+ size, val);
+ }
+
+ return pci_generic_config_write(bus, devfn, where, size, val);
+}
+
+static void __iomem *hisi_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
+ int where)
+{
+ struct pci_config_window *cfg = bus->sysdata;
+ void __iomem *reg_base = cfg->priv;
+
+ if (bus->number == cfg->busr.start)
+ return reg_base + where;
+ else
+ return pci_ecam_map_bus(bus, devfn, where);
+}
+
+static int hisi_pcie_init(struct pci_config_window *cfg)
+{
+ struct device *dev = cfg->parent;
+ struct acpi_device *adev = to_acpi_device(dev);
+ struct acpi_pci_root *root = acpi_driver_data(adev);
+ struct resource *res;
+ void __iomem *reg_base;
+ int ret;
+
+ /*
+ * Retrieve RC base and size from a HISI0081 device with _UID
+ * matching our segment.
+ */
+ res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL);
+ if (!res)
+ return -ENOMEM;
+
+ ret = acpi_get_rc_resources(dev, "HISI0081", root->segment, res);
+ if (ret) {
+ dev_err(dev, "can't get rc base address\n");
+ return -ENOMEM;
+ }
+
+ reg_base = devm_ioremap(dev, res->start, resource_size(res));
+ if (!reg_base)
+ return -ENOMEM;
+
+ cfg->priv = reg_base;
+ return 0;
+}
+
+struct pci_ecam_ops hisi_pcie_ops = {
+ .bus_shift = 20,
+ .init = hisi_pcie_init,
+ .pci_ops = {
+ .map_bus = hisi_pcie_map_bus,
+ .read = hisi_pcie_acpi_rd_conf,
+ .write = hisi_pcie_acpi_wr_conf,
+ }
+};
+
+#endif
+
+#ifdef CONFIG_PCI_HISI
#include "pcie-designware.h"
@@ -185,17 +284,13 @@ static int hisi_pcie_probe(struct platform_device *pdev)
reg = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rc_dbi");
pp->dbi_base = devm_ioremap_resource(dev, reg);
- if (IS_ERR(pp->dbi_base)) {
- dev_err(dev, "cannot get rc_dbi base\n");
+ if (IS_ERR(pp->dbi_base))
return PTR_ERR(pp->dbi_base);
- }
ret = hisi_add_pcie_port(hisi_pcie, pdev);
if (ret)
return ret;
- dev_warn(dev, "only 32-bit config accesses supported; smaller writes may corrupt adjacent RW1C fields\n");
-
return 0;
}
@@ -227,3 +322,5 @@ static struct platform_driver hisi_pcie_driver = {
},
};
builtin_platform_driver(hisi_pcie_driver);
+
+#endif
diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/host/pcie-iproc-bcma.c
index 8ce0890..bd4c9ec 100644
--- a/drivers/pci/host/pcie-iproc-bcma.c
+++ b/drivers/pci/host/pcie-iproc-bcma.c
@@ -54,6 +54,7 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
pcie->dev = dev;
+ pcie->type = IPROC_PCIE_PAXB_BCMA;
pcie->base = bdev->io_addr;
if (!pcie->base) {
dev_err(dev, "no controller registers\n");
diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/host/pcie-iproc-msi.c
index 9a2973b..9fad791 100644
--- a/drivers/pci/host/pcie-iproc-msi.c
+++ b/drivers/pci/host/pcie-iproc-msi.c
@@ -563,6 +563,7 @@ int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node)
}
switch (pcie->type) {
+ case IPROC_PCIE_PAXB_BCMA:
case IPROC_PCIE_PAXB:
msi->reg_offsets = iproc_msi_reg_paxb;
msi->nr_eq_region = 1;
diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c
index a3de087..22d814a7 100644
--- a/drivers/pci/host/pcie-iproc-platform.c
+++ b/drivers/pci/host/pcie-iproc-platform.c
@@ -31,8 +31,14 @@ static const struct of_device_id iproc_pcie_of_match_table[] = {
.compatible = "brcm,iproc-pcie",
.data = (int *)IPROC_PCIE_PAXB,
}, {
+ .compatible = "brcm,iproc-pcie-paxb-v2",
+ .data = (int *)IPROC_PCIE_PAXB_V2,
+ }, {
.compatible = "brcm,iproc-pcie-paxc",
.data = (int *)IPROC_PCIE_PAXC,
+ }, {
+ .compatible = "brcm,iproc-pcie-paxc-v2",
+ .data = (int *)IPROC_PCIE_PAXC_V2,
},
{ /* sentinel */ }
};
@@ -84,19 +90,6 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
return ret;
}
pcie->ob.axi_offset = val;
-
- ret = of_property_read_u32(np, "brcm,pcie-ob-window-size",
- &val);
- if (ret) {
- dev_err(dev,
- "missing brcm,pcie-ob-window-size property\n");
- return ret;
- }
- pcie->ob.window_size = (resource_size_t)val * SZ_1M;
-
- if (of_property_read_bool(np, "brcm,pcie-ob-oarr-size"))
- pcie->ob.set_oarr_size = true;
-
pcie->need_ob_cfg = true;
}
@@ -115,7 +108,14 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
return ret;
}
- pcie->map_irq = of_irq_parse_and_map_pci;
+ /* PAXC doesn't support legacy IRQs, skip mapping */
+ switch (pcie->type) {
+ case IPROC_PCIE_PAXC:
+ case IPROC_PCIE_PAXC_V2:
+ break;
+ default:
+ pcie->map_irq = of_irq_parse_and_map_pci;
+ }
ret = iproc_pcie_setup(pcie, &res);
if (ret)
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c
index 0b999a9..3ebc025 100644
--- a/drivers/pci/host/pcie-iproc.c
+++ b/drivers/pci/host/pcie-iproc.c
@@ -21,6 +21,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
+#include <linux/irqchip/arm-gic-v3.h>
#include <linux/platform_device.h>
#include <linux/of_address.h>
#include <linux/of_pci.h>
@@ -38,6 +39,12 @@
#define RC_PCIE_RST_OUTPUT BIT(RC_PCIE_RST_OUTPUT_SHIFT)
#define PAXC_RESET_MASK 0x7f
+#define GIC_V3_CFG_SHIFT 0
+#define GIC_V3_CFG BIT(GIC_V3_CFG_SHIFT)
+
+#define MSI_ENABLE_CFG_SHIFT 0
+#define MSI_ENABLE_CFG BIT(MSI_ENABLE_CFG_SHIFT)
+
#define CFG_IND_ADDR_MASK 0x00001ffc
#define CFG_ADDR_BUS_NUM_SHIFT 20
@@ -58,59 +65,319 @@
#define PCIE_DL_ACTIVE_SHIFT 2
#define PCIE_DL_ACTIVE BIT(PCIE_DL_ACTIVE_SHIFT)
+#define APB_ERR_EN_SHIFT 0
+#define APB_ERR_EN BIT(APB_ERR_EN_SHIFT)
+
+/* derive the enum index of the outbound/inbound mapping registers */
+#define MAP_REG(base_reg, index) ((base_reg) + (index) * 2)
+
+/*
+ * Maximum number of outbound mapping window sizes that can be supported by any
+ * OARR/OMAP mapping pair
+ */
+#define MAX_NUM_OB_WINDOW_SIZES 4
+
#define OARR_VALID_SHIFT 0
#define OARR_VALID BIT(OARR_VALID_SHIFT)
#define OARR_SIZE_CFG_SHIFT 1
-#define OARR_SIZE_CFG BIT(OARR_SIZE_CFG_SHIFT)
+
+/*
+ * Maximum number of inbound mapping region sizes that can be supported by an
+ * IARR
+ */
+#define MAX_NUM_IB_REGION_SIZES 9
+
+#define IMAP_VALID_SHIFT 0
+#define IMAP_VALID BIT(IMAP_VALID_SHIFT)
#define PCI_EXP_CAP 0xac
-#define MAX_NUM_OB_WINDOWS 2
-
#define IPROC_PCIE_REG_INVALID 0xffff
+/**
+ * iProc PCIe outbound mapping controller specific parameters
+ *
+ * @window_sizes: list of supported outbound mapping window sizes in MB
+ * @nr_sizes: number of supported outbound mapping window sizes
+ */
+struct iproc_pcie_ob_map {
+ resource_size_t window_sizes[MAX_NUM_OB_WINDOW_SIZES];
+ unsigned int nr_sizes;
+};
+
+static const struct iproc_pcie_ob_map paxb_ob_map[] = {
+ {
+ /* OARR0/OMAP0 */
+ .window_sizes = { 128, 256 },
+ .nr_sizes = 2,
+ },
+ {
+ /* OARR1/OMAP1 */
+ .window_sizes = { 128, 256 },
+ .nr_sizes = 2,
+ },
+};
+
+static const struct iproc_pcie_ob_map paxb_v2_ob_map[] = {
+ {
+ /* OARR0/OMAP0 */
+ .window_sizes = { 128, 256 },
+ .nr_sizes = 2,
+ },
+ {
+ /* OARR1/OMAP1 */
+ .window_sizes = { 128, 256 },
+ .nr_sizes = 2,
+ },
+ {
+ /* OARR2/OMAP2 */
+ .window_sizes = { 128, 256, 512, 1024 },
+ .nr_sizes = 4,
+ },
+ {
+ /* OARR3/OMAP3 */
+ .window_sizes = { 128, 256, 512, 1024 },
+ .nr_sizes = 4,
+ },
+};
+
+/**
+ * iProc PCIe inbound mapping type
+ */
+enum iproc_pcie_ib_map_type {
+ /* for DDR memory */
+ IPROC_PCIE_IB_MAP_MEM = 0,
+
+ /* for device I/O memory */
+ IPROC_PCIE_IB_MAP_IO,
+
+ /* invalid or unused */
+ IPROC_PCIE_IB_MAP_INVALID
+};
+
+/**
+ * iProc PCIe inbound mapping controller specific parameters
+ *
+ * @type: inbound mapping region type
+ * @size_unit: inbound mapping region size unit, could be SZ_1K, SZ_1M, or
+ * SZ_1G
+ * @region_sizes: list of supported inbound mapping region sizes in KB, MB, or
+ * GB, depedning on the size unit
+ * @nr_sizes: number of supported inbound mapping region sizes
+ * @nr_windows: number of supported inbound mapping windows for the region
+ * @imap_addr_offset: register offset between the upper and lower 32-bit
+ * IMAP address registers
+ * @imap_window_offset: register offset between each IMAP window
+ */
+struct iproc_pcie_ib_map {
+ enum iproc_pcie_ib_map_type type;
+ unsigned int size_unit;
+ resource_size_t region_sizes[MAX_NUM_IB_REGION_SIZES];
+ unsigned int nr_sizes;
+ unsigned int nr_windows;
+ u16 imap_addr_offset;
+ u16 imap_window_offset;
+};
+
+static const struct iproc_pcie_ib_map paxb_v2_ib_map[] = {
+ {
+ /* IARR0/IMAP0 */
+ .type = IPROC_PCIE_IB_MAP_IO,
+ .size_unit = SZ_1K,
+ .region_sizes = { 32 },
+ .nr_sizes = 1,
+ .nr_windows = 8,
+ .imap_addr_offset = 0x40,
+ .imap_window_offset = 0x4,
+ },
+ {
+ /* IARR1/IMAP1 (currently unused) */
+ .type = IPROC_PCIE_IB_MAP_INVALID,
+ },
+ {
+ /* IARR2/IMAP2 */
+ .type = IPROC_PCIE_IB_MAP_MEM,
+ .size_unit = SZ_1M,
+ .region_sizes = { 64, 128, 256, 512, 1024, 2048, 4096, 8192,
+ 16384 },
+ .nr_sizes = 9,
+ .nr_windows = 1,
+ .imap_addr_offset = 0x4,
+ .imap_window_offset = 0x8,
+ },
+ {
+ /* IARR3/IMAP3 */
+ .type = IPROC_PCIE_IB_MAP_MEM,
+ .size_unit = SZ_1G,
+ .region_sizes = { 1, 2, 4, 8, 16, 32 },
+ .nr_sizes = 6,
+ .nr_windows = 8,
+ .imap_addr_offset = 0x4,
+ .imap_window_offset = 0x8,
+ },
+ {
+ /* IARR4/IMAP4 */
+ .type = IPROC_PCIE_IB_MAP_MEM,
+ .size_unit = SZ_1G,
+ .region_sizes = { 32, 64, 128, 256, 512 },
+ .nr_sizes = 5,
+ .nr_windows = 8,
+ .imap_addr_offset = 0x4,
+ .imap_window_offset = 0x8,
+ },
+};
+
+/*
+ * iProc PCIe host registers
+ */
enum iproc_pcie_reg {
+ /* clock/reset signal control */
IPROC_PCIE_CLK_CTRL = 0,
+
+ /*
+ * To allow MSI to be steered to an external MSI controller (e.g., ARM
+ * GICv3 ITS)
+ */
+ IPROC_PCIE_MSI_GIC_MODE,
+
+ /*
+ * IPROC_PCIE_MSI_BASE_ADDR and IPROC_PCIE_MSI_WINDOW_SIZE define the
+ * window where the MSI posted writes are written, for the writes to be
+ * interpreted as MSI writes.
+ */
+ IPROC_PCIE_MSI_BASE_ADDR,
+ IPROC_PCIE_MSI_WINDOW_SIZE,
+
+ /*
+ * To hold the address of the register where the MSI writes are
+ * programed. When ARM GICv3 ITS is used, this should be programmed
+ * with the address of the GITS_TRANSLATER register.
+ */
+ IPROC_PCIE_MSI_ADDR_LO,
+ IPROC_PCIE_MSI_ADDR_HI,
+
+ /* enable MSI */
+ IPROC_PCIE_MSI_EN_CFG,
+
+ /* allow access to root complex configuration space */
IPROC_PCIE_CFG_IND_ADDR,
IPROC_PCIE_CFG_IND_DATA,
+
+ /* allow access to device configuration space */
IPROC_PCIE_CFG_ADDR,
IPROC_PCIE_CFG_DATA,
+
+ /* enable INTx */
IPROC_PCIE_INTX_EN,
- IPROC_PCIE_OARR_LO,
- IPROC_PCIE_OARR_HI,
- IPROC_PCIE_OMAP_LO,
- IPROC_PCIE_OMAP_HI,
+
+ /* outbound address mapping */
+ IPROC_PCIE_OARR0,
+ IPROC_PCIE_OMAP0,
+ IPROC_PCIE_OARR1,
+ IPROC_PCIE_OMAP1,
+ IPROC_PCIE_OARR2,
+ IPROC_PCIE_OMAP2,
+ IPROC_PCIE_OARR3,
+ IPROC_PCIE_OMAP3,
+
+ /* inbound address mapping */
+ IPROC_PCIE_IARR0,
+ IPROC_PCIE_IMAP0,
+ IPROC_PCIE_IARR1,
+ IPROC_PCIE_IMAP1,
+ IPROC_PCIE_IARR2,
+ IPROC_PCIE_IMAP2,
+ IPROC_PCIE_IARR3,
+ IPROC_PCIE_IMAP3,
+ IPROC_PCIE_IARR4,
+ IPROC_PCIE_IMAP4,
+
+ /* link status */
IPROC_PCIE_LINK_STATUS,
+
+ /* enable APB error for unsupported requests */
+ IPROC_PCIE_APB_ERR_EN,
+
+ /* total number of core registers */
+ IPROC_PCIE_MAX_NUM_REG,
+};
+
+/* iProc PCIe PAXB BCMA registers */
+static const u16 iproc_pcie_reg_paxb_bcma[] = {
+ [IPROC_PCIE_CLK_CTRL] = 0x000,
+ [IPROC_PCIE_CFG_IND_ADDR] = 0x120,
+ [IPROC_PCIE_CFG_IND_DATA] = 0x124,
+ [IPROC_PCIE_CFG_ADDR] = 0x1f8,
+ [IPROC_PCIE_CFG_DATA] = 0x1fc,
+ [IPROC_PCIE_INTX_EN] = 0x330,
+ [IPROC_PCIE_LINK_STATUS] = 0xf0c,
};
/* iProc PCIe PAXB registers */
static const u16 iproc_pcie_reg_paxb[] = {
- [IPROC_PCIE_CLK_CTRL] = 0x000,
- [IPROC_PCIE_CFG_IND_ADDR] = 0x120,
- [IPROC_PCIE_CFG_IND_DATA] = 0x124,
- [IPROC_PCIE_CFG_ADDR] = 0x1f8,
- [IPROC_PCIE_CFG_DATA] = 0x1fc,
- [IPROC_PCIE_INTX_EN] = 0x330,
- [IPROC_PCIE_OARR_LO] = 0xd20,
- [IPROC_PCIE_OARR_HI] = 0xd24,
- [IPROC_PCIE_OMAP_LO] = 0xd40,
- [IPROC_PCIE_OMAP_HI] = 0xd44,
- [IPROC_PCIE_LINK_STATUS] = 0xf0c,
+ [IPROC_PCIE_CLK_CTRL] = 0x000,
+ [IPROC_PCIE_CFG_IND_ADDR] = 0x120,
+ [IPROC_PCIE_CFG_IND_DATA] = 0x124,
+ [IPROC_PCIE_CFG_ADDR] = 0x1f8,
+ [IPROC_PCIE_CFG_DATA] = 0x1fc,
+ [IPROC_PCIE_INTX_EN] = 0x330,
+ [IPROC_PCIE_OARR0] = 0xd20,
+ [IPROC_PCIE_OMAP0] = 0xd40,
+ [IPROC_PCIE_OARR1] = 0xd28,
+ [IPROC_PCIE_OMAP1] = 0xd48,
+ [IPROC_PCIE_LINK_STATUS] = 0xf0c,
+ [IPROC_PCIE_APB_ERR_EN] = 0xf40,
+};
+
+/* iProc PCIe PAXB v2 registers */
+static const u16 iproc_pcie_reg_paxb_v2[] = {
+ [IPROC_PCIE_CLK_CTRL] = 0x000,
+ [IPROC_PCIE_CFG_IND_ADDR] = 0x120,
+ [IPROC_PCIE_CFG_IND_DATA] = 0x124,
+ [IPROC_PCIE_CFG_ADDR] = 0x1f8,
+ [IPROC_PCIE_CFG_DATA] = 0x1fc,
+ [IPROC_PCIE_INTX_EN] = 0x330,
+ [IPROC_PCIE_OARR0] = 0xd20,
+ [IPROC_PCIE_OMAP0] = 0xd40,
+ [IPROC_PCIE_OARR1] = 0xd28,
+ [IPROC_PCIE_OMAP1] = 0xd48,
+ [IPROC_PCIE_OARR2] = 0xd60,
+ [IPROC_PCIE_OMAP2] = 0xd68,
+ [IPROC_PCIE_OARR3] = 0xdf0,
+ [IPROC_PCIE_OMAP3] = 0xdf8,
+ [IPROC_PCIE_IARR0] = 0xd00,
+ [IPROC_PCIE_IMAP0] = 0xc00,
+ [IPROC_PCIE_IARR2] = 0xd10,
+ [IPROC_PCIE_IMAP2] = 0xcc0,
+ [IPROC_PCIE_IARR3] = 0xe00,
+ [IPROC_PCIE_IMAP3] = 0xe08,
+ [IPROC_PCIE_IARR4] = 0xe68,
+ [IPROC_PCIE_IMAP4] = 0xe70,
+ [IPROC_PCIE_LINK_STATUS] = 0xf0c,
+ [IPROC_PCIE_APB_ERR_EN] = 0xf40,
};
/* iProc PCIe PAXC v1 registers */
static const u16 iproc_pcie_reg_paxc[] = {
- [IPROC_PCIE_CLK_CTRL] = 0x000,
- [IPROC_PCIE_CFG_IND_ADDR] = 0x1f0,
- [IPROC_PCIE_CFG_IND_DATA] = 0x1f4,
- [IPROC_PCIE_CFG_ADDR] = 0x1f8,
- [IPROC_PCIE_CFG_DATA] = 0x1fc,
- [IPROC_PCIE_INTX_EN] = IPROC_PCIE_REG_INVALID,
- [IPROC_PCIE_OARR_LO] = IPROC_PCIE_REG_INVALID,
- [IPROC_PCIE_OARR_HI] = IPROC_PCIE_REG_INVALID,
- [IPROC_PCIE_OMAP_LO] = IPROC_PCIE_REG_INVALID,
- [IPROC_PCIE_OMAP_HI] = IPROC_PCIE_REG_INVALID,
- [IPROC_PCIE_LINK_STATUS] = IPROC_PCIE_REG_INVALID,
+ [IPROC_PCIE_CLK_CTRL] = 0x000,
+ [IPROC_PCIE_CFG_IND_ADDR] = 0x1f0,
+ [IPROC_PCIE_CFG_IND_DATA] = 0x1f4,
+ [IPROC_PCIE_CFG_ADDR] = 0x1f8,
+ [IPROC_PCIE_CFG_DATA] = 0x1fc,
+};
+
+/* iProc PCIe PAXC v2 registers */
+static const u16 iproc_pcie_reg_paxc_v2[] = {
+ [IPROC_PCIE_MSI_GIC_MODE] = 0x050,
+ [IPROC_PCIE_MSI_BASE_ADDR] = 0x074,
+ [IPROC_PCIE_MSI_WINDOW_SIZE] = 0x078,
+ [IPROC_PCIE_MSI_ADDR_LO] = 0x07c,
+ [IPROC_PCIE_MSI_ADDR_HI] = 0x080,
+ [IPROC_PCIE_MSI_EN_CFG] = 0x09c,
+ [IPROC_PCIE_CFG_IND_ADDR] = 0x1f0,
+ [IPROC_PCIE_CFG_IND_DATA] = 0x1f4,
+ [IPROC_PCIE_CFG_ADDR] = 0x1f8,
+ [IPROC_PCIE_CFG_DATA] = 0x1fc,
};
static inline struct iproc_pcie *iproc_data(struct pci_bus *bus)
@@ -159,16 +426,26 @@ static inline void iproc_pcie_write_reg(struct iproc_pcie *pcie,
writel(val, pcie->base + offset);
}
-static inline void iproc_pcie_ob_write(struct iproc_pcie *pcie,
- enum iproc_pcie_reg reg,
- unsigned window, u32 val)
+/**
+ * APB error forwarding can be disabled during access of configuration
+ * registers of the endpoint device, to prevent unsupported requests
+ * (typically seen during enumeration with multi-function devices) from
+ * triggering a system exception.
+ */
+static inline void iproc_pcie_apb_err_disable(struct pci_bus *bus,
+ bool disable)
{
- u16 offset = iproc_pcie_reg_offset(pcie, reg);
+ struct iproc_pcie *pcie = iproc_data(bus);
+ u32 val;
- if (iproc_pcie_reg_is_invalid(offset))
- return;
-
- writel(val, pcie->base + offset + (window * 8));
+ if (bus->number && pcie->has_apb_err_disable) {
+ val = iproc_pcie_read_reg(pcie, IPROC_PCIE_APB_ERR_EN);
+ if (disable)
+ val &= ~APB_ERR_EN;
+ else
+ val |= APB_ERR_EN;
+ iproc_pcie_write_reg(pcie, IPROC_PCIE_APB_ERR_EN, val);
+ }
}
/**
@@ -204,7 +481,7 @@ static void __iomem *iproc_pcie_map_cfg_bus(struct pci_bus *bus,
* PAXC is connected to an internally emulated EP within the SoC. It
* allows only one device.
*/
- if (pcie->type == IPROC_PCIE_PAXC)
+ if (pcie->ep_is_internal)
if (slot > 0)
return NULL;
@@ -222,26 +499,47 @@ static void __iomem *iproc_pcie_map_cfg_bus(struct pci_bus *bus,
return (pcie->base + offset);
}
+static int iproc_pcie_config_read32(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 *val)
+{
+ int ret;
+
+ iproc_pcie_apb_err_disable(bus, true);
+ ret = pci_generic_config_read32(bus, devfn, where, size, val);
+ iproc_pcie_apb_err_disable(bus, false);
+
+ return ret;
+}
+
+static int iproc_pcie_config_write32(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 val)
+{
+ int ret;
+
+ iproc_pcie_apb_err_disable(bus, true);
+ ret = pci_generic_config_write32(bus, devfn, where, size, val);
+ iproc_pcie_apb_err_disable(bus, false);
+
+ return ret;
+}
+
static struct pci_ops iproc_pcie_ops = {
.map_bus = iproc_pcie_map_cfg_bus,
- .read = pci_generic_config_read32,
- .write = pci_generic_config_write32,
+ .read = iproc_pcie_config_read32,
+ .write = iproc_pcie_config_write32,
};
static void iproc_pcie_reset(struct iproc_pcie *pcie)
{
u32 val;
- if (pcie->type == IPROC_PCIE_PAXC) {
- val = iproc_pcie_read_reg(pcie, IPROC_PCIE_CLK_CTRL);
- val &= ~PAXC_RESET_MASK;
- iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
- udelay(100);
- val |= PAXC_RESET_MASK;
- iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
- udelay(100);
+ /*
+ * PAXC and the internal emulated endpoint device downstream should not
+ * be reset. If firmware has been loaded on the endpoint device at an
+ * earlier boot stage, reset here causes issues.
+ */
+ if (pcie->ep_is_internal)
return;
- }
/*
* Select perst_b signal as reset source. Put the device into reset,
@@ -270,7 +568,7 @@ static int iproc_pcie_check_link(struct iproc_pcie *pcie, struct pci_bus *bus)
* PAXC connects to emulated endpoint devices directly and does not
* have a Serdes. Therefore skip the link detection logic here.
*/
- if (pcie->type == IPROC_PCIE_PAXC)
+ if (pcie->ep_is_internal)
return 0;
val = iproc_pcie_read_reg(pcie, IPROC_PCIE_LINK_STATUS);
@@ -334,6 +632,58 @@ static void iproc_pcie_enable(struct iproc_pcie *pcie)
iproc_pcie_write_reg(pcie, IPROC_PCIE_INTX_EN, SYS_RC_INTX_MASK);
}
+static inline bool iproc_pcie_ob_is_valid(struct iproc_pcie *pcie,
+ int window_idx)
+{
+ u32 val;
+
+ val = iproc_pcie_read_reg(pcie, MAP_REG(IPROC_PCIE_OARR0, window_idx));
+
+ return !!(val & OARR_VALID);
+}
+
+static inline int iproc_pcie_ob_write(struct iproc_pcie *pcie, int window_idx,
+ int size_idx, u64 axi_addr, u64 pci_addr)
+{
+ struct device *dev = pcie->dev;
+ u16 oarr_offset, omap_offset;
+
+ /*
+ * Derive the OARR/OMAP offset from the first pair (OARR0/OMAP0) based
+ * on window index.
+ */
+ oarr_offset = iproc_pcie_reg_offset(pcie, MAP_REG(IPROC_PCIE_OARR0,
+ window_idx));
+ omap_offset = iproc_pcie_reg_offset(pcie, MAP_REG(IPROC_PCIE_OMAP0,
+ window_idx));
+ if (iproc_pcie_reg_is_invalid(oarr_offset) ||
+ iproc_pcie_reg_is_invalid(omap_offset))
+ return -EINVAL;
+
+ /*
+ * Program the OARR registers. The upper 32-bit OARR register is
+ * always right after the lower 32-bit OARR register.
+ */
+ writel(lower_32_bits(axi_addr) | (size_idx << OARR_SIZE_CFG_SHIFT) |
+ OARR_VALID, pcie->base + oarr_offset);
+ writel(upper_32_bits(axi_addr), pcie->base + oarr_offset + 4);
+
+ /* now program the OMAP registers */
+ writel(lower_32_bits(pci_addr), pcie->base + omap_offset);
+ writel(upper_32_bits(pci_addr), pcie->base + omap_offset + 4);
+
+ dev_info(dev, "ob window [%d]: offset 0x%x axi %pap pci %pap\n",
+ window_idx, oarr_offset, &axi_addr, &pci_addr);
+ dev_info(dev, "oarr lo 0x%x oarr hi 0x%x\n",
+ readl(pcie->base + oarr_offset),
+ readl(pcie->base + oarr_offset + 4));
+ dev_info(dev, "omap lo 0x%x omap hi 0x%x\n",
+ readl(pcie->base + omap_offset),
+ readl(pcie->base + omap_offset + 4));
+
+ return 0;
+}
+
/**
* Some iProc SoCs require the SW to configure the outbound address mapping
*
@@ -350,24 +700,7 @@ static int iproc_pcie_setup_ob(struct iproc_pcie *pcie, u64 axi_addr,
{
struct iproc_pcie_ob *ob = &pcie->ob;
struct device *dev = pcie->dev;
- unsigned i;
- u64 max_size = (u64)ob->window_size * MAX_NUM_OB_WINDOWS;
- u64 remainder;
-
- if (size > max_size) {
- dev_err(dev,
- "res size %pap exceeds max supported size 0x%llx\n",
- &size, max_size);
- return -EINVAL;
- }
-
- div64_u64_rem(size, ob->window_size, &remainder);
- if (remainder) {
- dev_err(dev,
- "res size %pap needs to be multiple of window size %pap\n",
- &size, &ob->window_size);
- return -EINVAL;
- }
+ int ret = -EINVAL, window_idx, size_idx;
if (axi_addr < ob->axi_offset) {
dev_err(dev, "axi address %pap less than offset %pap\n",
@@ -381,26 +714,70 @@ static int iproc_pcie_setup_ob(struct iproc_pcie *pcie, u64 axi_addr,
*/
axi_addr -= ob->axi_offset;
- for (i = 0; i < MAX_NUM_OB_WINDOWS; i++) {
- iproc_pcie_ob_write(pcie, IPROC_PCIE_OARR_LO, i,
- lower_32_bits(axi_addr) | OARR_VALID |
- (ob->set_oarr_size ? 1 : 0));
- iproc_pcie_ob_write(pcie, IPROC_PCIE_OARR_HI, i,
- upper_32_bits(axi_addr));
- iproc_pcie_ob_write(pcie, IPROC_PCIE_OMAP_LO, i,
- lower_32_bits(pci_addr));
- iproc_pcie_ob_write(pcie, IPROC_PCIE_OMAP_HI, i,
- upper_32_bits(pci_addr));
+ /* iterate through all OARR/OMAP mapping windows */
+ for (window_idx = ob->nr_windows - 1; window_idx >= 0; window_idx--) {
+ const struct iproc_pcie_ob_map *ob_map =
+ &pcie->ob_map[window_idx];
- size -= ob->window_size;
- if (size == 0)
+ /*
+ * If current outbound window is already in use, move on to the
+ * next one.
+ */
+ if (iproc_pcie_ob_is_valid(pcie, window_idx))
+ continue;
+
+ /*
+ * Iterate through all supported window sizes within the
+ * OARR/OMAP pair to find a match. Go through the window sizes
+ * in a descending order.
+ */
+ for (size_idx = ob_map->nr_sizes - 1; size_idx >= 0;
+ size_idx--) {
+ resource_size_t window_size =
+ ob_map->window_sizes[size_idx] * SZ_1M;
+
+ if (size < window_size)
+ continue;
+
+ if (!IS_ALIGNED(axi_addr, window_size) ||
+ !IS_ALIGNED(pci_addr, window_size)) {
+ dev_err(dev,
+ "axi %pap or pci %pap not aligned\n",
+ &axi_addr, &pci_addr);
+ return -EINVAL;
+ }
+
+ /*
+ * Match found! Program both OARR and OMAP and mark
+ * them as a valid entry.
+ */
+ ret = iproc_pcie_ob_write(pcie, window_idx, size_idx,
+ axi_addr, pci_addr);
+ if (ret)
+ goto err_ob;
+
+ size -= window_size;
+ if (size == 0)
+ return 0;
+
+ /*
+ * If we are here, we are done with the current window,
+ * but not yet finished all mappings. Need to move on
+ * to the next window.
+ */
+ axi_addr += window_size;
+ pci_addr += window_size;
break;
-
- axi_addr += ob->window_size;
- pci_addr += ob->window_size;
+ }
}
- return 0;
+err_ob:
+ dev_err(dev, "unable to configure outbound mapping\n");
+ dev_err(dev,
+ "axi %pap, axi offset %pap, pci %pap, res size %pap\n",
+ &axi_addr, &ob->axi_offset, &pci_addr, &size);
+
+ return ret;
}
static int iproc_pcie_map_ranges(struct iproc_pcie *pcie,
@@ -434,13 +811,323 @@ static int iproc_pcie_map_ranges(struct iproc_pcie *pcie,
return 0;
}
+static inline bool iproc_pcie_ib_is_in_use(struct iproc_pcie *pcie,
+ int region_idx)
+{
+ const struct iproc_pcie_ib_map *ib_map = &pcie->ib_map[region_idx];
+ u32 val;
+
+ val = iproc_pcie_read_reg(pcie, MAP_REG(IPROC_PCIE_IARR0, region_idx));
+
+ return !!(val & (BIT(ib_map->nr_sizes) - 1));
+}
+
+static inline bool iproc_pcie_ib_check_type(const struct iproc_pcie_ib_map *ib_map,
+ enum iproc_pcie_ib_map_type type)
+{
+ return !!(ib_map->type == type);
+}
+
+static int iproc_pcie_ib_write(struct iproc_pcie *pcie, int region_idx,
+ int size_idx, int nr_windows, u64 axi_addr,
+ u64 pci_addr, resource_size_t size)
+{
+ struct device *dev = pcie->dev;
+ const struct iproc_pcie_ib_map *ib_map = &pcie->ib_map[region_idx];
+ u16 iarr_offset, imap_offset;
+ u32 val;
+ int window_idx;
+
+ iarr_offset = iproc_pcie_reg_offset(pcie,
+ MAP_REG(IPROC_PCIE_IARR0, region_idx));
+ imap_offset = iproc_pcie_reg_offset(pcie,
+ MAP_REG(IPROC_PCIE_IMAP0, region_idx));
+ if (iproc_pcie_reg_is_invalid(iarr_offset) ||
+ iproc_pcie_reg_is_invalid(imap_offset))
+ return -EINVAL;
+
+ dev_info(dev, "ib region [%d]: offset 0x%x axi %pap pci %pap\n",
+ region_idx, iarr_offset, &axi_addr, &pci_addr);
+
+ /*
+ * Program the IARR registers. The upper 32-bit IARR register is
+ * always right after the lower 32-bit IARR register.
+ */
+ writel(lower_32_bits(pci_addr) | BIT(size_idx),
+ pcie->base + iarr_offset);
+ writel(upper_32_bits(pci_addr), pcie->base + iarr_offset + 4);
+
+ dev_info(dev, "iarr lo 0x%x iarr hi 0x%x\n",
+ readl(pcie->base + iarr_offset),
+ readl(pcie->base + iarr_offset + 4));
+
+ /*
+ * Now program the IMAP registers. Each IARR region may have one or
+ * more IMAP windows.
+ */
+ size >>= ilog2(nr_windows);
+ for (window_idx = 0; window_idx < nr_windows; window_idx++) {
+ val = readl(pcie->base + imap_offset);
+ val |= lower_32_bits(axi_addr) | IMAP_VALID;
+ writel(val, pcie->base + imap_offset);
+ writel(upper_32_bits(axi_addr),
+ pcie->base + imap_offset + ib_map->imap_addr_offset);
+
+ dev_info(dev, "imap window [%d] lo 0x%x hi 0x%x\n",
+ window_idx, readl(pcie->base + imap_offset),
+ readl(pcie->base + imap_offset +
+ ib_map->imap_addr_offset));
+
+ imap_offset += ib_map->imap_window_offset;
+ axi_addr += size;
+ }
+
+ return 0;
+}
+
+static int iproc_pcie_setup_ib(struct iproc_pcie *pcie,
+ struct of_pci_range *range,
+ enum iproc_pcie_ib_map_type type)
+{
+ struct device *dev = pcie->dev;
+ struct iproc_pcie_ib *ib = &pcie->ib;
+ int ret;
+ unsigned int region_idx, size_idx;
+ u64 axi_addr = range->cpu_addr, pci_addr = range->pci_addr;
+ resource_size_t size = range->size;
+
+ /* iterate through all IARR mapping regions */
+ for (region_idx = 0; region_idx < ib->nr_regions; region_idx++) {
+ const struct iproc_pcie_ib_map *ib_map =
+ &pcie->ib_map[region_idx];
+
+ /*
+ * If current inbound region is already in use or not a
+ * compatible type, move on to the next.
+ */
+ if (iproc_pcie_ib_is_in_use(pcie, region_idx) ||
+ !iproc_pcie_ib_check_type(ib_map, type))
+ continue;
+
+ /* iterate through all supported region sizes to find a match */
+ for (size_idx = 0; size_idx < ib_map->nr_sizes; size_idx++) {
+ resource_size_t region_size =
+ ib_map->region_sizes[size_idx] * ib_map->size_unit;
+
+ if (size != region_size)
+ continue;
+
+ if (!IS_ALIGNED(axi_addr, region_size) ||
+ !IS_ALIGNED(pci_addr, region_size)) {
+ dev_err(dev,
+ "axi %pap or pci %pap not aligned\n",
+ &axi_addr, &pci_addr);
+ return -EINVAL;
+ }
+
+ /* Match found! Program IARR and all IMAP windows. */
+ ret = iproc_pcie_ib_write(pcie, region_idx, size_idx,
+ ib_map->nr_windows, axi_addr,
+ pci_addr, size);
+ if (ret)
+ goto err_ib;
+ else
+ return 0;
+
+ }
+ }
+ ret = -EINVAL;
+
+err_ib:
+ dev_err(dev, "unable to configure inbound mapping\n");
+ dev_err(dev, "axi %pap, pci %pap, res size %pap\n",
+ &axi_addr, &pci_addr, &size);
+
+ return ret;
+}
+
+static int pci_dma_range_parser_init(struct of_pci_range_parser *parser,
+ struct device_node *node)
+{
+ const int na = 3, ns = 2;
+ int rlen;
+
+ parser->node = node;
+ parser->pna = of_n_addr_cells(node);
+ parser->np = parser->pna + na + ns;
+
+ parser->range = of_get_property(node, "dma-ranges", &rlen);
+ if (!parser->range)
+ return -ENOENT;
+
+ parser->end = parser->range + rlen / sizeof(__be32);
+ return 0;
+}
+
+static int iproc_pcie_map_dma_ranges(struct iproc_pcie *pcie)
+{
+ struct of_pci_range range;
+ struct of_pci_range_parser parser;
+ int ret;
+
+ /* Get the dma-ranges from DT */
+ ret = pci_dma_range_parser_init(&parser, pcie->dev->of_node);
+ if (ret)
+ return ret;
+
+ for_each_of_pci_range(&parser, &range) {
+ /* Each range entry corresponds to an inbound mapping region */
+ ret = iproc_pcie_setup_ib(pcie, &range, IPROC_PCIE_IB_MAP_MEM);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int iproce_pcie_get_msi(struct iproc_pcie *pcie,
+ struct device_node *msi_node,
+ u64 *msi_addr)
+{
+ struct device *dev = pcie->dev;
+ int ret;
+ struct resource res;
+
+ /*
+ * Check if 'msi-map' points to ARM GICv3 ITS, which is the only
+ * supported external MSI controller that requires steering.
+ */
+ if (!of_device_is_compatible(msi_node, "arm,gic-v3-its")) {
+ dev_err(dev, "unable to find compatible MSI controller\n");
+ return -ENODEV;
+ }
+
+ /* derive GITS_TRANSLATER address from GICv3 */
+ ret = of_address_to_resource(msi_node, 0, &res);
+ if (ret < 0) {
+ dev_err(dev, "unable to obtain MSI controller resources\n");
+ return ret;
+ }
+
+ *msi_addr = res.start + GITS_TRANSLATER;
+ return 0;
+}
+
+static int iproc_pcie_paxb_v2_msi_steer(struct iproc_pcie *pcie, u64 msi_addr)
+{
+ int ret;
+ struct of_pci_range range;
+
+ memset(&range, 0, sizeof(range));
+ range.size = SZ_32K;
+ range.pci_addr = range.cpu_addr = msi_addr & ~(range.size - 1);
+
+ ret = iproc_pcie_setup_ib(pcie, &range, IPROC_PCIE_IB_MAP_IO);
+ return ret;
+}
+
+static void iproc_pcie_paxc_v2_msi_steer(struct iproc_pcie *pcie, u64 msi_addr)
+{
+ u32 val;
+
+ /*
+ * Program bits [43:13] of address of GITS_TRANSLATER register into
+ * bits [30:0] of the MSI base address register. In fact, in all iProc
+ * based SoCs, all I/O register bases are well below the 32-bit
+ * boundary, so we can safely assume bits [43:32] are always zeros.
+ */
+ iproc_pcie_write_reg(pcie, IPROC_PCIE_MSI_BASE_ADDR,
+ (u32)(msi_addr >> 13));
+
+ /* use a default 8K window size */
+ iproc_pcie_write_reg(pcie, IPROC_PCIE_MSI_WINDOW_SIZE, 0);
+
+ /* steering MSI to GICv3 ITS */
+ val = iproc_pcie_read_reg(pcie, IPROC_PCIE_MSI_GIC_MODE);
+ val |= GIC_V3_CFG;
+ iproc_pcie_write_reg(pcie, IPROC_PCIE_MSI_GIC_MODE, val);
+
+ /*
+ * Program bits [43:2] of address of GITS_TRANSLATER register into the
+ * iProc MSI address registers.
+ */
+ msi_addr >>= 2;
+ iproc_pcie_write_reg(pcie, IPROC_PCIE_MSI_ADDR_HI,
+ upper_32_bits(msi_addr));
+ iproc_pcie_write_reg(pcie, IPROC_PCIE_MSI_ADDR_LO,
+ lower_32_bits(msi_addr));
+
+ /* enable MSI */
+ val = iproc_pcie_read_reg(pcie, IPROC_PCIE_MSI_EN_CFG);
+ val |= MSI_ENABLE_CFG;
+ iproc_pcie_write_reg(pcie, IPROC_PCIE_MSI_EN_CFG, val);
+}
+
+static int iproc_pcie_msi_steer(struct iproc_pcie *pcie,
+ struct device_node *msi_node)
+{
+ struct device *dev = pcie->dev;
+ int ret;
+ u64 msi_addr;
+
+ ret = iproce_pcie_get_msi(pcie, msi_node, &msi_addr);
+ if (ret < 0) {
+ dev_err(dev, "msi steering failed\n");
+ return ret;
+ }
+
+ switch (pcie->type) {
+ case IPROC_PCIE_PAXB_V2:
+ ret = iproc_pcie_paxb_v2_msi_steer(pcie, msi_addr);
+ if (ret)
+ return ret;
+ break;
+ case IPROC_PCIE_PAXC_V2:
+ iproc_pcie_paxc_v2_msi_steer(pcie, msi_addr);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int iproc_pcie_msi_enable(struct iproc_pcie *pcie)
{
struct device_node *msi_node;
+ int ret;
+
+ /*
+ * Either the "msi-parent" or the "msi-map" phandle needs to exist
+ * for us to obtain the MSI node.
+ */
msi_node = of_parse_phandle(pcie->dev->of_node, "msi-parent", 0);
- if (!msi_node)
- return -ENODEV;
+ if (!msi_node) {
+ const __be32 *msi_map = NULL;
+ int len;
+ u32 phandle;
+
+ msi_map = of_get_property(pcie->dev->of_node, "msi-map", &len);
+ if (!msi_map)
+ return -ENODEV;
+
+ phandle = be32_to_cpup(msi_map + 1);
+ msi_node = of_find_node_by_phandle(phandle);
+ if (!msi_node)
+ return -ENODEV;
+ }
+
+ /*
+ * Certain revisions of the iProc PCIe controller require additional
+ * configurations to steer the MSI writes towards an external MSI
+ * controller.
+ */
+ if (pcie->need_msi_steer) {
+ ret = iproc_pcie_msi_steer(pcie, msi_node);
+ if (ret)
+ return ret;
+ }
/*
* If another MSI controller is being used, the call below should fail
@@ -454,6 +1141,65 @@ static void iproc_pcie_msi_disable(struct iproc_pcie *pcie)
iproc_msi_exit(pcie);
}
+static int iproc_pcie_rev_init(struct iproc_pcie *pcie)
+{
+ struct device *dev = pcie->dev;
+ unsigned int reg_idx;
+ const u16 *regs;
+
+ switch (pcie->type) {
+ case IPROC_PCIE_PAXB_BCMA:
+ regs = iproc_pcie_reg_paxb_bcma;
+ break;
+ case IPROC_PCIE_PAXB:
+ regs = iproc_pcie_reg_paxb;
+ pcie->has_apb_err_disable = true;
+ if (pcie->need_ob_cfg) {
+ pcie->ob_map = paxb_ob_map;
+ pcie->ob.nr_windows = ARRAY_SIZE(paxb_ob_map);
+ }
+ break;
+ case IPROC_PCIE_PAXB_V2:
+ regs = iproc_pcie_reg_paxb_v2;
+ pcie->has_apb_err_disable = true;
+ if (pcie->need_ob_cfg) {
+ pcie->ob_map = paxb_v2_ob_map;
+ pcie->ob.nr_windows = ARRAY_SIZE(paxb_v2_ob_map);
+ }
+ pcie->ib.nr_regions = ARRAY_SIZE(paxb_v2_ib_map);
+ pcie->ib_map = paxb_v2_ib_map;
+ pcie->need_msi_steer = true;
+ break;
+ case IPROC_PCIE_PAXC:
+ regs = iproc_pcie_reg_paxc;
+ pcie->ep_is_internal = true;
+ break;
+ case IPROC_PCIE_PAXC_V2:
+ regs = iproc_pcie_reg_paxc_v2;
+ pcie->ep_is_internal = true;
+ pcie->need_msi_steer = true;
+ break;
+ default:
+ dev_err(dev, "incompatible iProc PCIe interface\n");
+ return -EINVAL;
+ }
+
+ pcie->reg_offsets = devm_kcalloc(dev, IPROC_PCIE_MAX_NUM_REG,
+ sizeof(*pcie->reg_offsets),
+ GFP_KERNEL);
+ if (!pcie->reg_offsets)
+ return -ENOMEM;
+
+ /* go through the register table and populate all valid registers */
+ pcie->reg_offsets[0] = (pcie->type == IPROC_PCIE_PAXC_V2) ?
+ IPROC_PCIE_REG_INVALID : regs[0];
+ for (reg_idx = 1; reg_idx < IPROC_PCIE_MAX_NUM_REG; reg_idx++)
+ pcie->reg_offsets[reg_idx] = regs[reg_idx] ?
+ regs[reg_idx] : IPROC_PCIE_REG_INVALID;
+
+ return 0;
+}
+
int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
{
struct device *dev;
@@ -462,6 +1208,13 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
struct pci_bus *bus;
dev = pcie->dev;
+
+ ret = iproc_pcie_rev_init(pcie);
+ if (ret) {
+ dev_err(dev, "unable to initialize controller parameters\n");
+ return ret;
+ }
+
ret = devm_request_pci_bus_resources(dev, res);
if (ret)
return ret;
@@ -478,19 +1231,6 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
goto err_exit_phy;
}
- switch (pcie->type) {
- case IPROC_PCIE_PAXB:
- pcie->reg_offsets = iproc_pcie_reg_paxb;
- break;
- case IPROC_PCIE_PAXC:
- pcie->reg_offsets = iproc_pcie_reg_paxc;
- break;
- default:
- dev_err(dev, "incompatible iProc PCIe interface\n");
- ret = -EINVAL;
- goto err_power_off_phy;
- }
-
iproc_pcie_reset(pcie);
if (pcie->need_ob_cfg) {
@@ -501,6 +1241,10 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
}
}
+ ret = iproc_pcie_map_dma_ranges(pcie);
+ if (ret && ret != -ENOENT)
+ goto err_power_off_phy;
+
#ifdef CONFIG_ARM
pcie->sysdata.private_data = pcie;
sysdata = &pcie->sysdata;
@@ -530,7 +1274,10 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
pci_scan_child_bus(bus);
pci_assign_unassigned_bus_resources(bus);
- pci_fixup_irqs(pci_common_swizzle, pcie->map_irq);
+
+ if (pcie->map_irq)
+ pci_fixup_irqs(pci_common_swizzle, pcie->map_irq);
+
pci_bus_add_devices(bus);
return 0;
diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/host/pcie-iproc.h
index e84d93c..04fed8e 100644
--- a/drivers/pci/host/pcie-iproc.h
+++ b/drivers/pci/host/pcie-iproc.h
@@ -24,23 +24,34 @@
* endpoint devices.
*/
enum iproc_pcie_type {
- IPROC_PCIE_PAXB = 0,
+ IPROC_PCIE_PAXB_BCMA = 0,
+ IPROC_PCIE_PAXB,
+ IPROC_PCIE_PAXB_V2,
IPROC_PCIE_PAXC,
+ IPROC_PCIE_PAXC_V2,
};
/**
* iProc PCIe outbound mapping
- * @set_oarr_size: indicates the OARR size bit needs to be set
* @axi_offset: offset from the AXI address to the internal address used by
* the iProc PCIe core
- * @window_size: outbound window size
+ * @nr_windows: total number of supported outbound mapping windows
*/
struct iproc_pcie_ob {
- bool set_oarr_size;
resource_size_t axi_offset;
- resource_size_t window_size;
+ unsigned int nr_windows;
};
+/**
+ * iProc PCIe inbound mapping
+ * @nr_regions: total number of supported inbound mapping regions
+ */
+struct iproc_pcie_ib {
+ unsigned int nr_regions;
+};
+
+struct iproc_pcie_ob_map;
+struct iproc_pcie_ib_map;
struct iproc_msi;
/**
@@ -55,14 +66,25 @@ struct iproc_msi;
* @root_bus: pointer to root bus
* @phy: optional PHY device that controls the Serdes
* @map_irq: function callback to map interrupts
+ * @ep_is_internal: indicates an internal emulated endpoint device is connected
+ * @has_apb_err_disable: indicates the controller can be configured to prevent
+ * unsupported request from being forwarded as an APB bus error
+ *
* @need_ob_cfg: indicates SW needs to configure the outbound mapping window
- * @ob: outbound mapping parameters
+ * @ob: outbound mapping related parameters
+ * @ob_map: outbound mapping related parameters specific to the controller
+ *
+ * @ib: inbound mapping related parameters
+ * @ib_map: outbound mapping region related parameters
+ *
+ * @need_msi_steer: indicates additional configuration of the iProc PCIe
+ * controller is required to steer MSI writes to external interrupt controller
* @msi: MSI data
*/
struct iproc_pcie {
struct device *dev;
enum iproc_pcie_type type;
- const u16 *reg_offsets;
+ u16 *reg_offsets;
void __iomem *base;
phys_addr_t base_addr;
#ifdef CONFIG_ARM
@@ -71,8 +93,17 @@ struct iproc_pcie {
struct pci_bus *root_bus;
struct phy *phy;
int (*map_irq)(const struct pci_dev *, u8, u8);
+ bool ep_is_internal;
+ bool has_apb_err_disable;
+
bool need_ob_cfg;
struct iproc_pcie_ob ob;
+ const struct iproc_pcie_ob_map *ob_map;
+
+ struct iproc_pcie_ib ib;
+ const struct iproc_pcie_ib_map *ib_map;
+
+ bool need_msi_steer;
struct iproc_msi *msi;
};
diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/host/pcie-qcom.c
index ef0a84c..8b02db2 100644
--- a/drivers/pci/host/pcie-qcom.c
+++ b/drivers/pci/host/pcie-qcom.c
@@ -36,11 +36,17 @@
#include "pcie-designware.h"
+#define PCIE20_PARF_SYS_CTRL 0x00
#define PCIE20_PARF_PHY_CTRL 0x40
#define PCIE20_PARF_PHY_REFCLK 0x4C
#define PCIE20_PARF_DBI_BASE_ADDR 0x168
-#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16c
+#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16C
+#define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174
#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
+#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8
+#define PCIE20_PARF_LTSSM 0x1B0
+#define PCIE20_PARF_SID_OFFSET 0x234
+#define PCIE20_PARF_BDF_TRANSLATE_CFG 0x24C
#define PCIE20_ELBI_SYS_CTRL 0x04
#define PCIE20_ELBI_SYS_CTRL_LT_ENABLE BIT(0)
@@ -72,9 +78,18 @@ struct qcom_pcie_resources_v1 {
struct regulator *vdda;
};
+struct qcom_pcie_resources_v2 {
+ struct clk *aux_clk;
+ struct clk *master_clk;
+ struct clk *slave_clk;
+ struct clk *cfg_clk;
+ struct clk *pipe_clk;
+};
+
union qcom_pcie_resources {
struct qcom_pcie_resources_v0 v0;
struct qcom_pcie_resources_v1 v1;
+ struct qcom_pcie_resources_v2 v2;
};
struct qcom_pcie;
@@ -82,7 +97,9 @@ struct qcom_pcie;
struct qcom_pcie_ops {
int (*get_resources)(struct qcom_pcie *pcie);
int (*init)(struct qcom_pcie *pcie);
+ int (*post_init)(struct qcom_pcie *pcie);
void (*deinit)(struct qcom_pcie *pcie);
+ void (*ltssm_enable)(struct qcom_pcie *pcie);
};
struct qcom_pcie {
@@ -116,17 +133,35 @@ static irqreturn_t qcom_pcie_msi_irq_handler(int irq, void *arg)
return dw_handle_msi_irq(pp);
}
-static int qcom_pcie_establish_link(struct qcom_pcie *pcie)
+static void qcom_pcie_v0_v1_ltssm_enable(struct qcom_pcie *pcie)
{
u32 val;
- if (dw_pcie_link_up(&pcie->pp))
- return 0;
-
/* enable link training */
val = readl(pcie->elbi + PCIE20_ELBI_SYS_CTRL);
val |= PCIE20_ELBI_SYS_CTRL_LT_ENABLE;
writel(val, pcie->elbi + PCIE20_ELBI_SYS_CTRL);
+}
+
+static void qcom_pcie_v2_ltssm_enable(struct qcom_pcie *pcie)
+{
+ u32 val;
+
+ /* enable link training */
+ val = readl(pcie->parf + PCIE20_PARF_LTSSM);
+ val |= BIT(8);
+ writel(val, pcie->parf + PCIE20_PARF_LTSSM);
+}
+
+static int qcom_pcie_establish_link(struct qcom_pcie *pcie)
+{
+
+ if (dw_pcie_link_up(&pcie->pp))
+ return 0;
+
+ /* Enable Link Training state machine */
+ if (pcie->ops->ltssm_enable)
+ pcie->ops->ltssm_enable(pcie);
return dw_pcie_wait_for_link(&pcie->pp);
}
@@ -421,6 +456,113 @@ static int qcom_pcie_init_v1(struct qcom_pcie *pcie)
return ret;
}
+static int qcom_pcie_get_resources_v2(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
+ struct device *dev = pcie->pp.dev;
+
+ res->aux_clk = devm_clk_get(dev, "aux");
+ if (IS_ERR(res->aux_clk))
+ return PTR_ERR(res->aux_clk);
+
+ res->cfg_clk = devm_clk_get(dev, "cfg");
+ if (IS_ERR(res->cfg_clk))
+ return PTR_ERR(res->cfg_clk);
+
+ res->master_clk = devm_clk_get(dev, "bus_master");
+ if (IS_ERR(res->master_clk))
+ return PTR_ERR(res->master_clk);
+
+ res->slave_clk = devm_clk_get(dev, "bus_slave");
+ if (IS_ERR(res->slave_clk))
+ return PTR_ERR(res->slave_clk);
+
+ res->pipe_clk = devm_clk_get(dev, "pipe");
+ if (IS_ERR(res->pipe_clk))
+ return PTR_ERR(res->pipe_clk);
+
+ return 0;
+}
+
+static int qcom_pcie_init_v2(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
+ struct device *dev = pcie->pp.dev;
+ u32 val;
+ int ret;
+
+ ret = clk_prepare_enable(res->aux_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable aux clock\n");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(res->cfg_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable cfg clock\n");
+ goto err_cfg_clk;
+ }
+
+ ret = clk_prepare_enable(res->master_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable master clock\n");
+ goto err_master_clk;
+ }
+
+ ret = clk_prepare_enable(res->slave_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable slave clock\n");
+ goto err_slave_clk;
+ }
+
+ /* enable PCIe clocks and resets */
+ val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
+ val &= ~BIT(0);
+ writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
+
+ /* change DBI base address */
+ writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
+
+ /* MAC PHY_POWERDOWN MUX DISABLE */
+ val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
+ val &= ~BIT(29);
+ writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
+
+ val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
+ val |= BIT(4);
+ writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
+
+ val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
+ val |= BIT(31);
+ writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
+
+ return 0;
+
+err_slave_clk:
+ clk_disable_unprepare(res->master_clk);
+err_master_clk:
+ clk_disable_unprepare(res->cfg_clk);
+err_cfg_clk:
+ clk_disable_unprepare(res->aux_clk);
+
+ return ret;
+}
+
+static int qcom_pcie_post_init_v2(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
+ struct device *dev = pcie->pp.dev;
+ int ret;
+
+ ret = clk_prepare_enable(res->pipe_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable pipe clock\n");
+ return ret;
+ }
+
+ return 0;
+}
+
static int qcom_pcie_link_up(struct pcie_port *pp)
{
struct qcom_pcie *pcie = to_qcom_pcie(pp);
@@ -429,6 +571,17 @@ static int qcom_pcie_link_up(struct pcie_port *pp)
return !!(val & PCI_EXP_LNKSTA_DLLLA);
}
+static void qcom_pcie_deinit_v2(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
+
+ clk_disable_unprepare(res->pipe_clk);
+ clk_disable_unprepare(res->slave_clk);
+ clk_disable_unprepare(res->master_clk);
+ clk_disable_unprepare(res->cfg_clk);
+ clk_disable_unprepare(res->aux_clk);
+}
+
static void qcom_pcie_host_init(struct pcie_port *pp)
{
struct qcom_pcie *pcie = to_qcom_pcie(pp);
@@ -444,6 +597,9 @@ static void qcom_pcie_host_init(struct pcie_port *pp)
if (ret)
goto err_deinit;
+ if (pcie->ops->post_init)
+ pcie->ops->post_init(pcie);
+
dw_pcie_setup_rc(pp);
if (IS_ENABLED(CONFIG_PCI_MSI))
@@ -487,12 +643,22 @@ static const struct qcom_pcie_ops ops_v0 = {
.get_resources = qcom_pcie_get_resources_v0,
.init = qcom_pcie_init_v0,
.deinit = qcom_pcie_deinit_v0,
+ .ltssm_enable = qcom_pcie_v0_v1_ltssm_enable,
};
static const struct qcom_pcie_ops ops_v1 = {
.get_resources = qcom_pcie_get_resources_v1,
.init = qcom_pcie_init_v1,
.deinit = qcom_pcie_deinit_v1,
+ .ltssm_enable = qcom_pcie_v0_v1_ltssm_enable,
+};
+
+static const struct qcom_pcie_ops ops_v2 = {
+ .get_resources = qcom_pcie_get_resources_v2,
+ .init = qcom_pcie_init_v2,
+ .post_init = qcom_pcie_post_init_v2,
+ .deinit = qcom_pcie_deinit_v2,
+ .ltssm_enable = qcom_pcie_v2_ltssm_enable,
};
static int qcom_pcie_probe(struct platform_device *pdev)
@@ -572,6 +738,7 @@ static const struct of_device_id qcom_pcie_match[] = {
{ .compatible = "qcom,pcie-ipq8064", .data = &ops_v0 },
{ .compatible = "qcom,pcie-apq8064", .data = &ops_v0 },
{ .compatible = "qcom,pcie-apq8084", .data = &ops_v1 },
+ { .compatible = "qcom,pcie-msm8996", .data = &ops_v2 },
{ }
};
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index e0b22da..6419d8c 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -1187,9 +1187,6 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
pcie_bus_configure_settings(child);
pci_bus_add_devices(bus);
-
- dev_warn(dev, "only 32-bit config accesses supported; smaller writes may corrupt adjacent RW1C fields\n");
-
return err;
err_vpcie:
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index a46b585..5ed2dca 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -222,35 +222,6 @@ static void acpiphp_post_dock_fixup(struct acpi_device *adev)
acpiphp_let_context_go(context);
}
-/* Check whether the PCI device is managed by native PCIe hotplug driver */
-static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev)
-{
- u32 reg32;
- acpi_handle tmp;
- struct acpi_pci_root *root;
-
- /* Check whether the PCIe port supports native PCIe hotplug */
- if (pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP, ®32))
- return false;
- if (!(reg32 & PCI_EXP_SLTCAP_HPC))
- return false;
-
- /*
- * Check whether native PCIe hotplug has been enabled for
- * this PCIe hierarchy.
- */
- tmp = acpi_find_root_bridge_handle(pdev);
- if (!tmp)
- return false;
- root = acpi_pci_find_root(tmp);
- if (!root)
- return false;
- if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
- return false;
-
- return true;
-}
-
/**
* acpiphp_add_context - Add ACPIPHP context to an ACPI device object.
* @handle: ACPI handle of the object to add a context to.
@@ -334,7 +305,7 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data,
* expose slots to user space in those cases.
*/
if ((acpi_pci_check_ejectable(pbus, handle) || is_dock_device(adev))
- && !(pdev && device_is_managed_by_native_pciehp(pdev))) {
+ && !(pdev && pdev->is_hotplug_bridge && pciehp_is_native(pdev))) {
unsigned long long sun;
int retval;
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 74f3a06..ec009a7 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -867,7 +867,8 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
*/
if ((pdev->revision <= 2) && (vendor_id != PCI_VENDOR_ID_INTEL)) {
err(msg_HPC_not_supported);
- return -ENODEV;
+ rc = -ENODEV;
+ goto err_disable_device;
}
/* TODO: This code can be made to support non-Compaq or Intel
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index fea0b8b..56013d0 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -23,6 +23,9 @@
*
* Send feedback to <kristen.c.accardi@intel.com>
*
+ * Authors:
+ * Greg Kroah-Hartman <greg@kroah.com>
+ * Scott Murray <scottm@somanetworks.com>
*/
#include <linux/module.h> /* try_module_get & module_put */
@@ -50,15 +53,9 @@
#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
-
/* local variables */
static bool debug;
-#define DRIVER_VERSION "0.5"
-#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Scott Murray <scottm@somanetworks.com>"
-#define DRIVER_DESC "PCI Hot Plug PCI Core"
-
-
static LIST_HEAD(pci_hotplug_slot_list);
static DEFINE_MUTEX(pci_hp_mutex);
@@ -534,7 +531,6 @@ static int __init pci_hotplug_init(void)
return result;
}
- info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
return result;
}
device_initcall(pci_hotplug_init);
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 7d32fa33..35d8484 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -25,6 +25,10 @@
*
* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
*
+ * Authors:
+ * Dan Zink <dan.zink@compaq.com>
+ * Greg Kroah-Hartman <greg@kroah.com>
+ * Dely Sy <dely.l.sy@intel.com>"
*/
#include <linux/moduleparam.h>
@@ -42,10 +46,6 @@ bool pciehp_poll_mode;
int pciehp_poll_time;
static bool pciehp_force;
-#define DRIVER_VERSION "0.4"
-#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
-#define DRIVER_DESC "PCI Express Hot Plug Controller Driver"
-
/*
* not really modular, but the easiest way to keep compat with existing
* bootargs behaviour is to continue using module_param here.
@@ -333,7 +333,6 @@ static int __init pcied_init(void)
retval = pcie_port_service_register(&hpdriver_portdrv);
dbg("pcie_port_service_register = %d\n", retval);
- info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
if (retval)
dbg("Failure to register service\n");
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index efe69e8..10c9c0b 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -31,6 +31,7 @@
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/slab.h>
+#include <linux/pm_runtime.h>
#include <linux/pci.h>
#include "../pci.h"
#include "pciehp.h"
@@ -98,6 +99,7 @@ static int board_added(struct slot *p_slot)
pciehp_green_led_blink(p_slot);
/* Check link training status */
+ pm_runtime_get_sync(&ctrl->pcie->port->dev);
retval = pciehp_check_link_status(ctrl);
if (retval) {
ctrl_err(ctrl, "Failed to check link status\n");
@@ -118,12 +120,14 @@ static int board_added(struct slot *p_slot)
if (retval != -EEXIST)
goto err_exit;
}
+ pm_runtime_put(&ctrl->pcie->port->dev);
pciehp_green_led_on(p_slot);
pciehp_set_attention_status(p_slot, 0);
return 0;
err_exit:
+ pm_runtime_put(&ctrl->pcie->port->dev);
set_slot_off(ctrl, p_slot);
return retval;
}
@@ -137,7 +141,9 @@ static int remove_board(struct slot *p_slot)
int retval;
struct controller *ctrl = p_slot->ctrl;
+ pm_runtime_get_sync(&ctrl->pcie->port->dev);
retval = pciehp_unconfigure_device(p_slot);
+ pm_runtime_put(&ctrl->pcie->port->dev);
if (retval)
return retval;
@@ -410,7 +416,7 @@ int pciehp_enable_slot(struct slot *p_slot)
if (getstatus) {
ctrl_info(ctrl, "Slot(%s): Already enabled\n",
slot_name(p_slot));
- return -EINVAL;
+ return 0;
}
}
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index b57fc6d..026830a 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -620,8 +620,18 @@ static irqreturn_t pciehp_isr(int irq, void *dev_id)
pciehp_queue_interrupt_event(slot, INT_BUTTON_PRESS);
}
- /* Check Presence Detect Changed */
- if (events & PCI_EXP_SLTSTA_PDC) {
+ /*
+ * Check Link Status Changed at higher precedence than Presence
+ * Detect Changed. The PDS value may be set to "card present" from
+ * out-of-band detection, which may be in conflict with a Link Down
+ * and cause the wrong event to queue.
+ */
+ if (events & PCI_EXP_SLTSTA_DLLSC) {
+ ctrl_info(ctrl, "Slot(%s): Link %s\n", slot_name(slot),
+ link ? "Up" : "Down");
+ pciehp_queue_interrupt_event(slot, link ? INT_LINK_UP :
+ INT_LINK_DOWN);
+ } else if (events & PCI_EXP_SLTSTA_PDC) {
present = !!(status & PCI_EXP_SLTSTA_PDS);
ctrl_info(ctrl, "Slot(%s): Card %spresent\n", slot_name(slot),
present ? "" : "not ");
@@ -636,13 +646,6 @@ static irqreturn_t pciehp_isr(int irq, void *dev_id)
pciehp_queue_interrupt_event(slot, INT_POWER_FAULT);
}
- if (events & PCI_EXP_SLTSTA_DLLSC) {
- ctrl_info(ctrl, "Slot(%s): Link %s\n", slot_name(slot),
- link ? "Up" : "Down");
- pciehp_queue_interrupt_event(slot, link ? INT_LINK_UP :
- INT_LINK_DOWN);
- }
-
return IRQ_HANDLED;
}
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index e30f05c..4722782 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -306,13 +306,6 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
return rc;
}
- pci_iov_set_numvfs(dev, nr_virtfn);
- iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE;
- pci_cfg_access_lock(dev);
- pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
- msleep(100);
- pci_cfg_access_unlock(dev);
-
iov->initial_VFs = initial;
if (nr_virtfn < initial)
initial = nr_virtfn;
@@ -323,6 +316,13 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
goto err_pcibios;
}
+ pci_iov_set_numvfs(dev, nr_virtfn);
+ iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE;
+ pci_cfg_access_lock(dev);
+ pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
+ msleep(100);
+ pci_cfg_access_unlock(dev);
+
for (i = 0; i < initial; i++) {
rc = pci_iov_add_virtfn(dev, i, 0);
if (rc)
@@ -554,21 +554,61 @@ void pci_iov_release(struct pci_dev *dev)
}
/**
- * pci_iov_resource_bar - get position of the SR-IOV BAR
+ * pci_iov_update_resource - update a VF BAR
* @dev: the PCI device
* @resno: the resource number
*
- * Returns position of the BAR encapsulated in the SR-IOV capability.
+ * Update a VF BAR in the SR-IOV capability of a PF.
*/
-int pci_iov_resource_bar(struct pci_dev *dev, int resno)
+void pci_iov_update_resource(struct pci_dev *dev, int resno)
{
- if (resno < PCI_IOV_RESOURCES || resno > PCI_IOV_RESOURCE_END)
- return 0;
+ struct pci_sriov *iov = dev->is_physfn ? dev->sriov : NULL;
+ struct resource *res = dev->resource + resno;
+ int vf_bar = resno - PCI_IOV_RESOURCES;
+ struct pci_bus_region region;
+ u16 cmd;
+ u32 new;
+ int reg;
- BUG_ON(!dev->is_physfn);
+ /*
+ * The generic pci_restore_bars() path calls this for all devices,
+ * including VFs and non-SR-IOV devices. If this is not a PF, we
+ * have nothing to do.
+ */
+ if (!iov)
+ return;
- return dev->sriov->pos + PCI_SRIOV_BAR +
- 4 * (resno - PCI_IOV_RESOURCES);
+ pci_read_config_word(dev, iov->pos + PCI_SRIOV_CTRL, &cmd);
+ if ((cmd & PCI_SRIOV_CTRL_VFE) && (cmd & PCI_SRIOV_CTRL_MSE)) {
+ dev_WARN(&dev->dev, "can't update enabled VF BAR%d %pR\n",
+ vf_bar, res);
+ return;
+ }
+
+ /*
+ * Ignore unimplemented BARs, unused resource slots for 64-bit
+ * BARs, and non-movable resources, e.g., those described via
+ * Enhanced Allocation.
+ */
+ if (!res->flags)
+ return;
+
+ if (res->flags & IORESOURCE_UNSET)
+ return;
+
+ if (res->flags & IORESOURCE_PCI_FIXED)
+ return;
+
+ pcibios_resource_to_bus(dev->bus, ®ion, res);
+ new = region.start;
+ new |= res->flags & ~PCI_BASE_ADDRESS_MEM_MASK;
+
+ reg = iov->pos + PCI_SRIOV_BAR + 4 * vf_bar;
+ pci_write_config_dword(dev, reg, new);
+ if (res->flags & IORESOURCE_MEM_64) {
+ new = region.start >> 16 >> 16;
+ pci_write_config_dword(dev, reg + 4, new);
+ }
}
resource_size_t __weak pcibios_iov_resource_alignment(struct pci_dev *dev,
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index bfdd074..da4e3c1 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1292,7 +1292,8 @@ const struct cpumask *pci_irq_get_affinity(struct pci_dev *dev, int nr)
} else if (dev->msi_enabled) {
struct msi_desc *entry = first_pci_msi_entry(dev);
- if (WARN_ON_ONCE(!entry || nr >= entry->nvec_used))
+ if (WARN_ON_ONCE(!entry || !entry->affinity ||
+ nr >= entry->nvec_used))
return NULL;
return &entry->affinity[nr];
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index d966d47..0018603 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -29,6 +29,82 @@ const u8 pci_acpi_dsm_uuid[] = {
0x91, 0x17, 0xea, 0x4d, 0x19, 0xc3, 0x43, 0x4d
};
+#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
+static int acpi_get_rc_addr(struct acpi_device *adev, struct resource *res)
+{
+ struct device *dev = &adev->dev;
+ struct resource_entry *entry;
+ struct list_head list;
+ unsigned long flags;
+ int ret;
+
+ INIT_LIST_HEAD(&list);
+ flags = IORESOURCE_MEM;
+ ret = acpi_dev_get_resources(adev, &list,
+ acpi_dev_filter_resource_type_cb,
+ (void *) flags);
+ if (ret < 0) {
+ dev_err(dev, "failed to parse _CRS method, error code %d\n",
+ ret);
+ return ret;
+ }
+
+ if (ret == 0) {
+ dev_err(dev, "no IO and memory resources present in _CRS\n");
+ return -EINVAL;
+ }
+
+ entry = list_first_entry(&list, struct resource_entry, node);
+ *res = *entry->res;
+ acpi_dev_free_resource_list(&list);
+ return 0;
+}
+
+static acpi_status acpi_match_rc(acpi_handle handle, u32 lvl, void *context,
+ void **retval)
+{
+ u16 *segment = context;
+ unsigned long long uid;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(handle, "_UID", NULL, &uid);
+ if (ACPI_FAILURE(status) || uid != *segment)
+ return AE_CTRL_DEPTH;
+
+ *(acpi_handle *)retval = handle;
+ return AE_CTRL_TERMINATE;
+}
+
+int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
+ struct resource *res)
+{
+ struct acpi_device *adev;
+ acpi_status status;
+ acpi_handle handle;
+ int ret;
+
+ status = acpi_get_devices(hid, acpi_match_rc, &segment, &handle);
+ if (ACPI_FAILURE(status)) {
+ dev_err(dev, "can't find _HID %s device to locate resources\n",
+ hid);
+ return -ENODEV;
+ }
+
+ ret = acpi_bus_get_device(handle, &adev);
+ if (ret)
+ return ret;
+
+ ret = acpi_get_rc_addr(adev, res);
+ if (ret) {
+ dev_err(dev, "can't get resource from %s\n",
+ dev_name(&adev->dev));
+ return ret;
+ }
+
+ return 0;
+}
+#endif
+
phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle)
{
acpi_status status = AE_NOT_EXIST;
@@ -294,6 +370,30 @@ int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp)
EXPORT_SYMBOL_GPL(pci_get_hp_params);
/**
+ * pciehp_is_native - Check whether a hotplug port is handled by the OS
+ * @pdev: Hotplug port to check
+ *
+ * Walk up from @pdev to the host bridge, obtain its cached _OSC Control Field
+ * and return the value of the "PCI Express Native Hot Plug control" bit.
+ * On failure to obtain the _OSC Control Field return %false.
+ */
+bool pciehp_is_native(struct pci_dev *pdev)
+{
+ struct acpi_pci_root *root;
+ acpi_handle handle;
+
+ handle = acpi_find_root_bridge_handle(pdev);
+ if (!handle)
+ return false;
+
+ root = acpi_pci_find_root(handle);
+ if (!root)
+ return false;
+
+ return root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL;
+}
+
+/**
* pci_acpi_wake_bus - Root bus wakeup notification fork function.
* @work: Work item to handle.
*/
diff --git a/drivers/pci/pci-mid.c b/drivers/pci/pci-mid.c
index 55f453d..23ed731 100644
--- a/drivers/pci/pci-mid.c
+++ b/drivers/pci/pci-mid.c
@@ -49,7 +49,7 @@ static bool mid_pci_need_resume(struct pci_dev *dev)
return false;
}
-static struct pci_platform_pm_ops mid_pci_platform_pm = {
+static const struct pci_platform_pm_ops mid_pci_platform_pm = {
.is_manageable = mid_pci_power_manageable,
.set_state = mid_pci_set_power_state,
.choose_state = mid_pci_choose_state,
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index bcd10c7..0666287 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -50,6 +50,7 @@ pci_config_attr(vendor, "0x%04x\n");
pci_config_attr(device, "0x%04x\n");
pci_config_attr(subsystem_vendor, "0x%04x\n");
pci_config_attr(subsystem_device, "0x%04x\n");
+pci_config_attr(revision, "0x%02x\n");
pci_config_attr(class, "0x%06x\n");
pci_config_attr(irq, "%u\n");
@@ -568,6 +569,7 @@ static struct attribute *pci_dev_attrs[] = {
&dev_attr_device.attr,
&dev_attr_subsystem_vendor.attr,
&dev_attr_subsystem_device.attr,
+ &dev_attr_revision.attr,
&dev_attr_class.attr,
&dev_attr_irq.attr,
&dev_attr_local_cpus.attr,
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ba34907..a881c0d 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -564,10 +564,6 @@ static void pci_restore_bars(struct pci_dev *dev)
{
int i;
- /* Per SR-IOV spec 3.4.1.11, VF BARs are RO zero */
- if (dev->is_virtfn)
- return;
-
for (i = 0; i < PCI_BRIDGE_RESOURCES; i++)
pci_update_resource(dev, i);
}
@@ -2106,6 +2102,10 @@ bool pci_dev_run_wake(struct pci_dev *dev)
if (!dev->pme_support)
return false;
+ /* PME-capable in principle, but not from the intended sleep state */
+ if (!pci_pme_capable(dev, pci_target_state(dev)))
+ return false;
+
while (bus->parent) {
struct pci_dev *bridge = bus->self;
@@ -2226,7 +2226,7 @@ void pci_config_pm_runtime_put(struct pci_dev *pdev)
* This function checks if it is possible to move the bridge to D3.
* Currently we only allow D3 for recent enough PCIe ports.
*/
-static bool pci_bridge_d3_possible(struct pci_dev *bridge)
+bool pci_bridge_d3_possible(struct pci_dev *bridge)
{
unsigned int year;
@@ -2239,6 +2239,14 @@ static bool pci_bridge_d3_possible(struct pci_dev *bridge)
case PCI_EXP_TYPE_DOWNSTREAM:
if (pci_bridge_d3_disable)
return false;
+
+ /*
+ * Hotplug ports handled by firmware in System Management Mode
+ * may not be put into D3 by the OS (Thunderbolt on non-Macs).
+ */
+ if (bridge->is_hotplug_bridge && !pciehp_is_native(bridge))
+ return false;
+
if (pci_bridge_d3_force)
return true;
@@ -2259,32 +2267,36 @@ static bool pci_bridge_d3_possible(struct pci_dev *bridge)
static int pci_dev_check_d3cold(struct pci_dev *dev, void *data)
{
bool *d3cold_ok = data;
- bool no_d3cold;
- /*
- * The device needs to be allowed to go D3cold and if it is wake
- * capable to do so from D3cold.
- */
- no_d3cold = dev->no_d3cold || !dev->d3cold_allowed ||
- (device_may_wakeup(&dev->dev) && !pci_pme_capable(dev, PCI_D3cold)) ||
- !pci_power_manageable(dev);
+ if (/* The device needs to be allowed to go D3cold ... */
+ dev->no_d3cold || !dev->d3cold_allowed ||
- *d3cold_ok = !no_d3cold;
+ /* ... and if it is wakeup capable to do so from D3cold. */
+ (device_may_wakeup(&dev->dev) &&
+ !pci_pme_capable(dev, PCI_D3cold)) ||
- return no_d3cold;
+ /* If it is a bridge it must be allowed to go to D3. */
+ !pci_power_manageable(dev) ||
+
+ /* Hotplug interrupts cannot be delivered if the link is down. */
+ dev->is_hotplug_bridge)
+
+ *d3cold_ok = false;
+
+ return !*d3cold_ok;
}
/*
* pci_bridge_d3_update - Update bridge D3 capabilities
* @dev: PCI device which is changed
- * @remove: Is the device being removed
*
* Update upstream bridge PM capabilities accordingly depending on if the
* device PM configuration was changed or the device is being removed. The
* change is also propagated upstream.
*/
-static void pci_bridge_d3_update(struct pci_dev *dev, bool remove)
+void pci_bridge_d3_update(struct pci_dev *dev)
{
+ bool remove = !device_is_registered(&dev->dev);
struct pci_dev *bridge;
bool d3cold_ok = true;
@@ -2292,55 +2304,39 @@ static void pci_bridge_d3_update(struct pci_dev *dev, bool remove)
if (!bridge || !pci_bridge_d3_possible(bridge))
return;
- pci_dev_get(bridge);
/*
- * If the device is removed we do not care about its D3cold
- * capabilities.
+ * If D3 is currently allowed for the bridge, removing one of its
+ * children won't change that.
+ */
+ if (remove && bridge->bridge_d3)
+ return;
+
+ /*
+ * If D3 is currently allowed for the bridge and a child is added or
+ * changed, disallowance of D3 can only be caused by that child, so
+ * we only need to check that single device, not any of its siblings.
+ *
+ * If D3 is currently not allowed for the bridge, checking the device
+ * first may allow us to skip checking its siblings.
*/
if (!remove)
pci_dev_check_d3cold(dev, &d3cold_ok);
- if (d3cold_ok) {
- /*
- * We need to go through all children to find out if all of
- * them can still go to D3cold.
- */
+ /*
+ * If D3 is currently not allowed for the bridge, this may be caused
+ * either by the device being changed/removed or any of its siblings,
+ * so we need to go through all children to find out if one of them
+ * continues to block D3.
+ */
+ if (d3cold_ok && !bridge->bridge_d3)
pci_walk_bus(bridge->subordinate, pci_dev_check_d3cold,
&d3cold_ok);
- }
if (bridge->bridge_d3 != d3cold_ok) {
bridge->bridge_d3 = d3cold_ok;
/* Propagate change to upstream bridges */
- pci_bridge_d3_update(bridge, false);
+ pci_bridge_d3_update(bridge);
}
-
- pci_dev_put(bridge);
-}
-
-/**
- * pci_bridge_d3_device_changed - Update bridge D3 capabilities on change
- * @dev: PCI device that was changed
- *
- * If a device is added or its PM configuration, such as is it allowed to
- * enter D3cold, is changed this function updates upstream bridge PM
- * capabilities accordingly.
- */
-void pci_bridge_d3_device_changed(struct pci_dev *dev)
-{
- pci_bridge_d3_update(dev, false);
-}
-
-/**
- * pci_bridge_d3_device_removed - Update bridge D3 capabilities on remove
- * @dev: PCI device being removed
- *
- * Function updates upstream bridge PM capabilities based on other devices
- * still left on the bus.
- */
-void pci_bridge_d3_device_removed(struct pci_dev *dev)
-{
- pci_bridge_d3_update(dev, true);
}
/**
@@ -2355,7 +2351,7 @@ void pci_d3cold_enable(struct pci_dev *dev)
{
if (dev->no_d3cold) {
dev->no_d3cold = false;
- pci_bridge_d3_device_changed(dev);
+ pci_bridge_d3_update(dev);
}
}
EXPORT_SYMBOL_GPL(pci_d3cold_enable);
@@ -2372,7 +2368,7 @@ void pci_d3cold_disable(struct pci_dev *dev)
{
if (!dev->no_d3cold) {
dev->no_d3cold = true;
- pci_bridge_d3_device_changed(dev);
+ pci_bridge_d3_update(dev);
}
}
EXPORT_SYMBOL_GPL(pci_d3cold_disable);
@@ -4831,36 +4827,6 @@ int pci_select_bars(struct pci_dev *dev, unsigned long flags)
}
EXPORT_SYMBOL(pci_select_bars);
-/**
- * pci_resource_bar - get position of the BAR associated with a resource
- * @dev: the PCI device
- * @resno: the resource number
- * @type: the BAR type to be filled in
- *
- * Returns BAR position in config space, or 0 if the BAR is invalid.
- */
-int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type)
-{
- int reg;
-
- if (resno < PCI_ROM_RESOURCE) {
- *type = pci_bar_unknown;
- return PCI_BASE_ADDRESS_0 + 4 * resno;
- } else if (resno == PCI_ROM_RESOURCE) {
- *type = pci_bar_mem32;
- return dev->rom_base_reg;
- } else if (resno < PCI_BRIDGE_RESOURCES) {
- /* device specific resource */
- *type = pci_bar_unknown;
- reg = pci_iov_resource_bar(dev, resno);
- if (reg)
- return reg;
- }
-
- dev_err(&dev->dev, "BAR %d: invalid resource\n", resno);
- return 0;
-}
-
/* Some architectures require additional programming to enable VGA */
static arch_set_vga_state_t arch_set_vga_state;
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 4518562..cb17db2 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -1,9 +1,6 @@
#ifndef DRIVERS_PCI_H
#define DRIVERS_PCI_H
-#define PCI_CFG_SPACE_SIZE 256
-#define PCI_CFG_SPACE_EXP_SIZE 4096
-
#define PCI_FIND_CAP_TTL 48
extern const unsigned char pcie_link_speed[];
@@ -85,8 +82,8 @@ void pci_pm_init(struct pci_dev *dev);
void pci_ea_init(struct pci_dev *dev);
void pci_allocate_cap_save_buffers(struct pci_dev *dev);
void pci_free_cap_save_buffers(struct pci_dev *dev);
-void pci_bridge_d3_device_changed(struct pci_dev *dev);
-void pci_bridge_d3_device_removed(struct pci_dev *dev);
+bool pci_bridge_d3_possible(struct pci_dev *dev);
+void pci_bridge_d3_update(struct pci_dev *dev);
static inline void pci_wakeup_event(struct pci_dev *dev)
{
@@ -245,7 +242,6 @@ bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
int pci_setup_device(struct pci_dev *dev);
int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
struct resource *res, unsigned int reg);
-int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
void pci_configure_ari(struct pci_dev *dev);
void __pci_bus_size_bridges(struct pci_bus *bus,
struct list_head *realloc_head);
@@ -289,7 +285,7 @@ static inline void pci_restore_ats_state(struct pci_dev *dev)
#ifdef CONFIG_PCI_IOV
int pci_iov_init(struct pci_dev *dev);
void pci_iov_release(struct pci_dev *dev);
-int pci_iov_resource_bar(struct pci_dev *dev, int resno);
+void pci_iov_update_resource(struct pci_dev *dev, int resno);
resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
void pci_restore_iov_state(struct pci_dev *dev);
int pci_iov_bus_range(struct pci_bus *bus);
@@ -303,10 +299,6 @@ static inline void pci_iov_release(struct pci_dev *dev)
{
}
-static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno)
-{
- return 0;
-}
static inline void pci_restore_iov_state(struct pci_dev *dev)
{
}
@@ -356,4 +348,9 @@ static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
}
#endif
+#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
+int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
+ struct resource *res);
+#endif
+
#endif /* DRIVERS_PCI_H */
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
index 139150b..dea186a 100644
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ b/drivers/pci/pcie/aer/aerdrv.c
@@ -30,13 +30,6 @@
#include "aerdrv.h"
#include "../../pci.h"
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v1.0"
-#define DRIVER_AUTHOR "tom.l.nguyen@intel.com"
-#define DRIVER_DESC "Root Port Advanced Error Reporting Driver"
-
static int aer_probe(struct pcie_device *dev);
static void aer_remove(struct pcie_device *dev);
static pci_ers_result_t aer_error_detected(struct pci_dev *dev,
@@ -297,12 +290,12 @@ static int aer_probe(struct pcie_device *dev)
{
int status;
struct aer_rpc *rpc;
- struct device *device = &dev->device;
+ struct device *device = &dev->port->dev;
/* Alloc rpc data structure */
rpc = aer_alloc_rpc(dev);
if (!rpc) {
- dev_printk(KERN_DEBUG, device, "alloc rpc failed\n");
+ dev_printk(KERN_DEBUG, device, "alloc AER rpc failed\n");
aer_remove(dev);
return -ENOMEM;
}
@@ -310,7 +303,8 @@ static int aer_probe(struct pcie_device *dev)
/* Request IRQ ISR */
status = request_irq(dev->irq, aer_irq, IRQF_SHARED, "aerdrv", dev);
if (status) {
- dev_printk(KERN_DEBUG, device, "request IRQ failed\n");
+ dev_printk(KERN_DEBUG, device, "request AER IRQ %d failed\n",
+ dev->irq);
aer_remove(dev);
return status;
}
@@ -318,8 +312,8 @@ static int aer_probe(struct pcie_device *dev)
rpc->isr = 1;
aer_enable_rootport(rpc);
-
- return status;
+ dev_info(device, "AER enabled with IRQ %d\n", dev->irq);
+ return 0;
}
/**
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 0ec649d..17ac1dc 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -351,15 +351,29 @@ static void pcie_aspm_cap_init(struct pcie_link_state *link, int blacklist)
return;
}
- /* Configure common clock before checking latencies */
- pcie_aspm_configure_common_clock(link);
-
/* Get upstream/downstream components' register state */
pcie_get_aspm_reg(parent, &upreg);
child = list_entry(linkbus->devices.next, struct pci_dev, bus_list);
pcie_get_aspm_reg(child, &dwreg);
/*
+ * If ASPM not supported, don't mess with the clocks and link,
+ * bail out now.
+ */
+ if (!(upreg.support & dwreg.support))
+ return;
+
+ /* Configure common clock before checking latencies */
+ pcie_aspm_configure_common_clock(link);
+
+ /*
+ * Re-read upstream/downstream components' register state
+ * after clock configuration
+ */
+ pcie_get_aspm_reg(parent, &upreg);
+ pcie_get_aspm_reg(child, &dwreg);
+
+ /*
* Setup L0s state
*
* Note that we must not enable L0s in either direction on a
@@ -886,8 +900,8 @@ static ssize_t clk_ctl_store(struct device *dev,
return n;
}
-static DEVICE_ATTR(link_state, 0644, link_state_show, link_state_store);
-static DEVICE_ATTR(clk_ctl, 0644, clk_ctl_show, clk_ctl_store);
+static DEVICE_ATTR_RW(link_state);
+static DEVICE_ATTR_RW(clk_ctl);
static char power_group[] = "power";
void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
index 884bad5..7175293 100644
--- a/drivers/pci/pcie/pme.c
+++ b/drivers/pci/pcie/pme.c
@@ -300,8 +300,6 @@ static irqreturn_t pcie_pme_irq(int irq, void *context)
*/
static int pcie_pme_set_native(struct pci_dev *dev, void *ign)
{
- dev_info(&dev->dev, "Signaling PME through PCIe PME interrupt\n");
-
device_set_run_wake(&dev->dev, true);
dev->pme_interrupt = true;
return 0;
@@ -319,23 +317,8 @@ static int pcie_pme_set_native(struct pci_dev *dev, void *ign)
static void pcie_pme_mark_devices(struct pci_dev *port)
{
pcie_pme_set_native(port, NULL);
- if (port->subordinate) {
+ if (port->subordinate)
pci_walk_bus(port->subordinate, pcie_pme_set_native, NULL);
- } else {
- struct pci_bus *bus = port->bus;
- struct pci_dev *dev;
-
- /* Check if this is a root port event collector. */
- if (pci_pcie_type(port) != PCI_EXP_TYPE_RC_EC || !bus)
- return;
-
- down_read(&pci_bus_sem);
- list_for_each_entry(dev, &bus->devices, bus_list)
- if (pci_is_pcie(dev)
- && pci_pcie_type(dev) == PCI_EXP_TYPE_RC_END)
- pcie_pme_set_native(dev, NULL);
- up_read(&pci_bus_sem);
- }
}
/**
@@ -364,12 +347,14 @@ static int pcie_pme_probe(struct pcie_device *srv)
ret = request_irq(srv->irq, pcie_pme_irq, IRQF_SHARED, "PCIe PME", srv);
if (ret) {
kfree(data);
- } else {
- pcie_pme_mark_devices(port);
- pcie_pme_interrupt_enable(port, true);
+ return ret;
}
- return ret;
+ dev_info(&port->dev, "Signaling PME with IRQ %d\n", srv->irq);
+
+ pcie_pme_mark_devices(port);
+ pcie_pme_interrupt_enable(port, true);
+ return 0;
}
static bool pcie_pme_check_wakeup(struct pci_bus *bus)
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index e9270b4..9698289 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -499,7 +499,6 @@ static int pcie_port_probe_service(struct device *dev)
if (status)
return status;
- dev_printk(KERN_DEBUG, dev, "service driver %s loaded\n", driver->name);
get_device(dev);
return 0;
}
@@ -524,8 +523,6 @@ static int pcie_port_remove_service(struct device *dev)
pciedev = to_pcie_device(dev);
driver = to_service_driver(dev->driver);
if (driver && driver->remove) {
- dev_printk(KERN_DEBUG, dev, "unloading service driver %s\n",
- driver->name);
driver->remove(pciedev);
put_device(dev);
}
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index 79327cc1..8aa3f14 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -19,6 +19,7 @@
#include <linux/dmi.h>
#include <linux/pci-aspm.h>
+#include "../pci.h"
#include "portdrv.h"
#include "aer/aerdrv.h"
@@ -149,15 +150,7 @@ static int pcie_portdrv_probe(struct pci_dev *dev,
pci_save_state(dev);
- /*
- * Prevent runtime PM if the port is advertising support for PCIe
- * hotplug. Otherwise the BIOS hotplug SMI code might not be able
- * to enumerate devices behind this port properly (the port is
- * powered down preventing all config space accesses to the
- * subordinate devices). We can't be sure for native PCIe hotplug
- * either so prevent that as well.
- */
- if (!dev->is_hotplug_bridge) {
+ if (pci_bridge_d3_possible(dev)) {
/*
* Keep the port resumed 100ms to make sure things like
* config space accesses from userspace (lspci) will not
@@ -175,7 +168,7 @@ static int pcie_portdrv_probe(struct pci_dev *dev,
static void pcie_portdrv_remove(struct pci_dev *dev)
{
- if (!dev->is_hotplug_bridge) {
+ if (pci_bridge_d3_possible(dev)) {
pm_runtime_forbid(&dev->dev);
pm_runtime_get_noresume(&dev->dev);
pm_runtime_dont_use_autosuspend(&dev->dev);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index ab00267..cf7670e 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -227,7 +227,8 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
mask64 = (u32)PCI_BASE_ADDRESS_MEM_MASK;
}
} else {
- res->flags |= (l & IORESOURCE_ROM_ENABLE);
+ if (l & PCI_ROM_ADDRESS_ENABLE)
+ res->flags |= IORESOURCE_ROM_ENABLE;
l64 = l & PCI_ROM_ADDRESS_MASK;
sz64 = sz & PCI_ROM_ADDRESS_MASK;
mask64 = (u32)PCI_ROM_ADDRESS_MASK;
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index c232729..9236e40 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2156,7 +2156,7 @@ static void quirk_blacklist_vpd(struct pci_dev *dev)
{
if (dev->vpd) {
dev->vpd->len = 0;
- dev_warn(&dev->dev, FW_BUG "VPD access disabled\n");
+ dev_warn(&dev->dev, FW_BUG "disabling VPD access (can't determine size of non-standard VPD format)\n");
}
}
@@ -3137,8 +3137,9 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3_delay);
+
/*
- * Some devices may pass our check in pci_intx_mask_supported if
+ * Some devices may pass our check in pci_intx_mask_supported() if
* PCI_COMMAND_INTX_DISABLE works though they actually do not properly
* support this feature.
*/
@@ -3146,53 +3147,139 @@ static void quirk_broken_intx_masking(struct pci_dev *dev)
{
dev->broken_intx_masking = 1;
}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, 0x0030,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
- quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
+ quirk_broken_intx_masking);
+
/*
* Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
* Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
*
* RTL8110SC - Fails under PCI device assignment using DisINTx masking.
*/
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_REALTEK, 0x8169,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
- quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
+ quirk_broken_intx_masking);
/*
* Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
* DisINTx can be set but the interrupt status bit is non-functional.
*/
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1572,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1574,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1580,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1581,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1583,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1584,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1585,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1586,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1587,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1588,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1589,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x37d0,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x37d1,
- quirk_broken_intx_masking);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x37d2,
- quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1,
+ quirk_broken_intx_masking);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2,
+ quirk_broken_intx_masking);
+
+static u16 mellanox_broken_intx_devs[] = {
+ PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
+ PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
+ PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
+ PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
+ PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
+ PCI_DEVICE_ID_MELLANOX_HERMON_EN,
+ PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
+ PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
+ PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
+ PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
+ PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
+ PCI_DEVICE_ID_MELLANOX_CONNECTX2,
+ PCI_DEVICE_ID_MELLANOX_CONNECTX3,
+ PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
+};
+
+#define CONNECTX_4_CURR_MAX_MINOR 99
+#define CONNECTX_4_INTX_SUPPORT_MINOR 14
+
+/*
+ * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
+ * If so, don't mark it as broken.
+ * FW minor > 99 means older FW version format and no INTx masking support.
+ * FW minor < 14 means new FW version format and no INTx masking support.
+ */
+static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
+{
+ __be32 __iomem *fw_ver;
+ u16 fw_major;
+ u16 fw_minor;
+ u16 fw_subminor;
+ u32 fw_maj_min;
+ u32 fw_sub_min;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
+ if (pdev->device == mellanox_broken_intx_devs[i]) {
+ pdev->broken_intx_masking = 1;
+ return;
+ }
+ }
+
+ /* Getting here means Connect-IB cards and up. Connect-IB has no INTx
+ * support so shouldn't be checked further
+ */
+ if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
+ return;
+
+ if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
+ pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
+ return;
+
+ /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
+ if (pci_enable_device_mem(pdev)) {
+ dev_warn(&pdev->dev, "Can't enable device memory\n");
+ return;
+ }
+
+ fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
+ if (!fw_ver) {
+ dev_warn(&pdev->dev, "Can't map ConnectX-4 initialization segment\n");
+ goto out;
+ }
+
+ /* Reading from resource space should be 32b aligned */
+ fw_maj_min = ioread32be(fw_ver);
+ fw_sub_min = ioread32be(fw_ver + 1);
+ fw_major = fw_maj_min & 0xffff;
+ fw_minor = fw_maj_min >> 16;
+ fw_subminor = fw_sub_min & 0xffff;
+ if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
+ fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
+ dev_warn(&pdev->dev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n",
+ fw_major, fw_minor, fw_subminor, pdev->device ==
+ PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
+ pdev->broken_intx_masking = 1;
+ }
+
+ iounmap(fw_ver);
+
+out:
+ pci_disable_device(pdev);
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
+ mellanox_check_broken_intx_masking);
static void quirk_no_bus_reset(struct pci_dev *dev)
{
@@ -3255,6 +3342,25 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
quirk_thunderbolt_hotplug_msi);
+static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
+{
+ pci_set_vpd_size(dev, 8192);
+}
+
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x20, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x21, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x22, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x23, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x24, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x25, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x26, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x30, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x31, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x32, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x35, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x36, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x37, quirk_chelsio_extend_vpd);
+
#ifdef CONFIG_ACPI
/*
* Apple: Shutdown Cactus Ridge Thunderbolt controller.
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index f9357e0..73a03d3 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -40,7 +40,7 @@ static void pci_destroy_dev(struct pci_dev *dev)
list_del(&dev->bus_list);
up_write(&pci_bus_sem);
- pci_bridge_d3_device_removed(dev);
+ pci_bridge_d3_update(dev);
pci_free_resources(dev);
put_device(&dev->dev);
}
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 06663d3..b6edb18 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -35,6 +35,11 @@ int pci_enable_rom(struct pci_dev *pdev)
if (res->flags & IORESOURCE_ROM_SHADOW)
return 0;
+ /*
+ * Ideally pci_update_resource() would update the ROM BAR address,
+ * and we would only set the enable bit here. But apparently some
+ * devices have buggy ROM BARs that read as zero when disabled.
+ */
pcibios_resource_to_bus(pdev->bus, ®ion, res);
pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_addr);
rom_addr &= ~PCI_ROM_ADDRESS_MASK;
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 66c4d8f..0454273 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -25,21 +25,18 @@
#include <linux/slab.h>
#include "pci.h"
-
-void pci_update_resource(struct pci_dev *dev, int resno)
+static void pci_std_update_resource(struct pci_dev *dev, int resno)
{
struct pci_bus_region region;
bool disable;
u16 cmd;
u32 new, check, mask;
int reg;
- enum pci_bar_type type;
struct resource *res = dev->resource + resno;
- if (dev->is_virtfn) {
- dev_warn(&dev->dev, "can't update VF BAR%d\n", resno);
+ /* Per SR-IOV spec 3.4.1.11, VF BARs are RO zero */
+ if (dev->is_virtfn)
return;
- }
/*
* Ignore resources for unimplemented BARs and unused resource slots
@@ -60,21 +57,34 @@ void pci_update_resource(struct pci_dev *dev, int resno)
return;
pcibios_resource_to_bus(dev->bus, ®ion, res);
+ new = region.start;
- new = region.start | (res->flags & PCI_REGION_FLAG_MASK);
- if (res->flags & IORESOURCE_IO)
+ if (res->flags & IORESOURCE_IO) {
mask = (u32)PCI_BASE_ADDRESS_IO_MASK;
- else
+ new |= res->flags & ~PCI_BASE_ADDRESS_IO_MASK;
+ } else if (resno == PCI_ROM_RESOURCE) {
+ mask = (u32)PCI_ROM_ADDRESS_MASK;
+ } else {
mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
+ new |= res->flags & ~PCI_BASE_ADDRESS_MEM_MASK;
+ }
- reg = pci_resource_bar(dev, resno, &type);
- if (!reg)
- return;
- if (type != pci_bar_unknown) {
+ if (resno < PCI_ROM_RESOURCE) {
+ reg = PCI_BASE_ADDRESS_0 + 4 * resno;
+ } else if (resno == PCI_ROM_RESOURCE) {
+
+ /*
+ * Apparently some Matrox devices have ROM BARs that read
+ * as zero when disabled, so don't update ROM BARs unless
+ * they're enabled. See https://lkml.org/lkml/2005/8/30/138.
+ */
if (!(res->flags & IORESOURCE_ROM_ENABLE))
return;
+
+ reg = dev->rom_base_reg;
new |= PCI_ROM_ADDRESS_ENABLE;
- }
+ } else
+ return;
/*
* We can't update a 64-bit BAR atomically, so when possible,
@@ -110,6 +120,16 @@ void pci_update_resource(struct pci_dev *dev, int resno)
pci_write_config_word(dev, PCI_COMMAND, cmd);
}
+void pci_update_resource(struct pci_dev *dev, int resno)
+{
+ if (resno <= PCI_ROM_RESOURCE)
+ pci_std_update_resource(dev, resno);
+#ifdef CONFIG_PCI_IOV
+ else if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
+ pci_iov_update_resource(dev, resno);
+#endif
+}
+
int pci_claim_resource(struct pci_dev *dev, int resource)
{
struct resource *res = &dev->resource[resource];
diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c
index 940304c..02260cf 100644
--- a/drivers/usb/host/uhci-pci.c
+++ b/drivers/usb/host/uhci-pci.c
@@ -129,6 +129,10 @@ static int uhci_pci_init(struct usb_hcd *hcd)
if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_HP)
uhci->wait_for_hp = 1;
+ /* Intel controllers use non-PME wakeup signalling */
+ if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_INTEL)
+ device_set_run_wake(uhci_dev(uhci), 1);
+
/* Set up pointers to PCI-specific functions */
uhci->reset_hc = uhci_pci_reset_hc;
uhci->check_and_reset_hc = uhci_pci_check_and_reset_hc;
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index 65d4a30..871af74 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -31,8 +31,6 @@
#include "vfio_pci_private.h"
-#define PCI_CFG_SPACE_SIZE 256
-
/* Fake capability ID for standard config space */
#define PCI_CAP_ID_BASIC 0
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ddbeda6..b00ad73 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -419,6 +419,8 @@ static inline int acpi_dev_filter_resource_type_cb(struct acpi_resource *ares,
return acpi_dev_filter_resource_type(ares, (unsigned long)arg);
}
+struct acpi_device *acpi_resource_consumer(struct resource *res);
+
int acpi_check_resource_conflict(const struct resource *res);
int acpi_check_region(resource_size_t start, resource_size_t n,
@@ -762,6 +764,11 @@ static inline int acpi_reconfig_notifier_unregister(struct notifier_block *nb)
return -EINVAL;
}
+static inline struct acpi_device *acpi_resource_consumer(struct resource *res)
+{
+ return NULL;
+}
+
#endif /* !CONFIG_ACPI */
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h
index 7fd5cfc..0e0974e 100644
--- a/include/linux/of_pci.h
+++ b/include/linux/of_pci.h
@@ -16,6 +16,7 @@ int of_pci_get_devfn(struct device_node *np);
int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
int of_get_pci_domain_nr(struct device_node *node);
+int of_pci_get_max_link_speed(struct device_node *node);
void of_pci_check_probe_only(void);
int of_pci_map_rid(struct device_node *np, u32 rid,
const char *map_name, const char *map_mask_name,
@@ -62,6 +63,12 @@ static inline int of_pci_map_rid(struct device_node *np, u32 rid,
return -EINVAL;
}
+static inline int
+of_pci_get_max_link_speed(struct device_node *node)
+{
+ return -EINVAL;
+}
+
static inline void of_pci_check_probe_only(void) { }
#endif
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h
index 7d63a66..7a4e83a 100644
--- a/include/linux/pci-acpi.h
+++ b/include/linux/pci-acpi.h
@@ -24,7 +24,9 @@ static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
}
extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
-extern phys_addr_t pci_mcfg_lookup(u16 domain, struct resource *bus_res);
+struct pci_ecam_ops;
+extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
+ struct pci_ecam_ops **ecam_ops);
static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
{
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index 7adad20..f0d2b94 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
@@ -59,6 +59,15 @@ void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn,
/* default ECAM ops */
extern struct pci_ecam_ops pci_generic_ecam_ops;
+#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
+extern struct pci_ecam_ops pci_32b_ops; /* 32-bit accesses only */
+extern struct pci_ecam_ops hisi_pcie_ops; /* HiSilicon */
+extern struct pci_ecam_ops thunder_pem_ecam_ops; /* Cavium ThunderX 1.x & 2.x */
+extern struct pci_ecam_ops pci_thunder_ecam_ops; /* Cavium ThunderX 1.x */
+extern struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */
+extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
+#endif
+
#ifdef CONFIG_PCI_HOST_GENERIC
/* for DT-based PCI controllers that support ECAM */
int pci_host_common_probe(struct platform_device *pdev,
diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h
index 8c78950..2e855af 100644
--- a/include/linux/pci_hotplug.h
+++ b/include/linux/pci_hotplug.h
@@ -176,6 +176,7 @@ struct hotplug_params {
#ifdef CONFIG_ACPI
#include <linux/acpi.h>
int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp);
+bool pciehp_is_native(struct pci_dev *pdev);
int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags);
int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle);
int acpi_pci_detect_ejectable(acpi_handle handle);
@@ -185,5 +186,6 @@ static inline int pci_get_hp_params(struct pci_dev *dev,
{
return -ENODEV;
}
+static inline bool pciehp_is_native(struct pci_dev *pdev) { return true; }
#endif
#endif
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index c58752f..f020ab4 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2256,12 +2256,29 @@
#define PCI_DEVICE_ID_ZOLTRIX_2BD0 0x2bd0
#define PCI_VENDOR_ID_MELLANOX 0x15b3
-#define PCI_DEVICE_ID_MELLANOX_TAVOR 0x5a44
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX3 0x1003
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO 0x1007
+#define PCI_DEVICE_ID_MELLANOX_CONNECTIB 0x1011
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX4 0x1013
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX 0x1015
+#define PCI_DEVICE_ID_MELLANOX_TAVOR 0x5a44
#define PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE 0x5a46
-#define PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT 0x6278
-#define PCI_DEVICE_ID_MELLANOX_ARBEL 0x6282
-#define PCI_DEVICE_ID_MELLANOX_SINAI_OLD 0x5e8c
-#define PCI_DEVICE_ID_MELLANOX_SINAI 0x6274
+#define PCI_DEVICE_ID_MELLANOX_SINAI_OLD 0x5e8c
+#define PCI_DEVICE_ID_MELLANOX_SINAI 0x6274
+#define PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT 0x6278
+#define PCI_DEVICE_ID_MELLANOX_ARBEL 0x6282
+#define PCI_DEVICE_ID_MELLANOX_HERMON_SDR 0x6340
+#define PCI_DEVICE_ID_MELLANOX_HERMON_DDR 0x634a
+#define PCI_DEVICE_ID_MELLANOX_HERMON_QDR 0x6354
+#define PCI_DEVICE_ID_MELLANOX_HERMON_EN 0x6368
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX_EN 0x6372
+#define PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2 0x6732
+#define PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2 0x673c
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2 0x6746
+#define PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2 0x6750
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2 0x675a
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2 0x6764
+#define PCI_DEVICE_ID_MELLANOX_CONNECTX2 0x676e
#define PCI_VENDOR_ID_DFI 0x15bd
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index e5a2e68..174d114 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -23,6 +23,14 @@
#define LINUX_PCI_REGS_H
/*
+ * Conventional PCI and PCI-X Mode 1 devices have 256 bytes of
+ * configuration space. PCI-X Mode 2 and PCIe devices have 4096 bytes of
+ * configuration space.
+ */
+#define PCI_CFG_SPACE_SIZE 256
+#define PCI_CFG_SPACE_EXP_SIZE 4096
+
+/*
* Under PCI, each device has 256 bytes of configuration address space,
* of which the first 64 bytes are standardized as follows:
*/
