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Commit 60e8d3e1 authored by Linus Torvalds's avatar Linus Torvalds
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Merge tag 'pci-v4.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci 

Pull PCI updates from Bjorn Helgaas:

 - add ASPM L1 substate support

 - enable PCIe Extended Tags when supported

 - configure PCIe MPS settings on iProc, Versatile, X-Gene, and Xilinx

 - increase VPD access timeout

 - add ACS quirks for Intel Union Point, Qualcomm QDF2400 and QDF2432

 - use new pci_irq_alloc_vectors() in more drivers

 - fix MSI affinity memory leak

 - remove unused MSI interfaces and update documentation

 - remove unused AER .link_reset() callback

 - avoid pci_lock / p->pi_lock deadlock seen with perf

 - serialize sysfs enable/disable num_vfs operations

 - move DesignWare IP from drivers/pci/host/ to drivers/pci/dwc/ and
   refactor so we can support both hosts and endpoints

 - add DT ECAM-like support for HiSilicon Hip06/Hip07 controllers

 - add Rockchip system power management support

 - add Thunder-X cn81xx and cn83xx support

 - add Exynos 5440 PCIe PHY support

* tag 'pci-v4.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (93 commits)
  PCI: dwc: Remove dependency of designware on CONFIG_PCI
  PCI: dwc: Add CONFIG_PCIE_DW_HOST to enable PCI dwc host
  PCI: dwc: Split pcie-designware.c into host and core files
  PCI: dwc: designware: Fix style errors in pcie-designware.c
  PCI: dwc: designware: Parse "num-lanes" property in dw_pcie_setup_rc()
  PCI: dwc: all: Split struct pcie_port into host-only and core structures
  PCI: dwc: designware: Get device pointer at the start of dw_pcie_host_init()
  PCI: dwc: all: Rename cfg_read/cfg_write to read/write
  PCI: dwc: all: Use platform_set_drvdata() to save private data
  PCI: dwc: designware: Move register defines to designware header file
  PCI: dwc: Use PTR_ERR_OR_ZERO to simplify code
  PCI: dra7xx: Group PHY API invocations
  PCI: dra7xx: Enable MSI and legacy interrupts simultaneously
  PCI: dra7xx: Add support to force RC to work in GEN1 mode
  PCI: dra7xx: Simplify probe code with devm_gpiod_get_optional()
  PCI: Move DesignWare IP support to new drivers/pci/dwc/ directory
  PCI: exynos: Support the PHY generic framework
  Documentation: binding: Modify the exynos5440 PCIe binding
  phy: phy-exynos-pcie: Add support for Exynos PCIe PHY
  Documentation: samsung-phy: Add exynos-pcie-phy binding
  ...
parents 190c3ee0 c4d052ce
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Documentation/PCI/MSI-HOWTO.txt
View file @ 60e8d3e1
......@@ -162,8 +162,6 @@ The following old APIs to enable and disable MSI or MSI-X interrupts should
not be used in new code:
pci_enable_msi() /* deprecated */
pci_enable_msi_range() /* deprecated */
pci_enable_msi_exact() /* deprecated */
pci_disable_msi() /* deprecated */
pci_enable_msix_range() /* deprecated */
pci_enable_msix_exact() /* deprecated */
......@@ -268,5 +266,5 @@ or disabled (0). If 0 is found in any of the msi_bus files belonging
to bridges between the PCI root and the device, MSIs are disabled.
It is also worth checking the device driver to see whether it supports MSIs.
For example, it may contain calls to pci_enable_msi_range() or
pci_enable_msix_range().
For example, it may contain calls to pci_irq_alloc_vectors() with the
PCI_IRQ_MSI or PCI_IRQ_MSIX flags.
Documentation/PCI/PCIEBUS-HOWTO.txt
View file @ 60e8d3e1
......@@ -161,21 +161,13 @@ Since all service drivers of a PCI-PCI Bridge Port device are
allowed to run simultaneously, below lists a few of possible resource
conflicts with proposed solutions.
6.1 MSI Vector Resource
The MSI capability structure enables a device software driver to call
pci_enable_msi to request MSI based interrupts. Once MSI interrupts
are enabled on a device, it stays in this mode until a device driver
calls pci_disable_msi to disable MSI interrupts and revert back to
INTx emulation mode. Since service drivers of the same PCI-PCI Bridge
port share the same physical device, if an individual service driver
calls pci_enable_msi/pci_disable_msi it may result unpredictable
behavior. For example, two service drivers run simultaneously on the
same physical Root Port. Both service drivers call pci_enable_msi to
request MSI based interrupts. A service driver may not know whether
any other service drivers have run on this Root Port. If either one
of them calls pci_disable_msi, it puts the other service driver
in a wrong interrupt mode.
6.1 MSI and MSI-X Vector Resource
Once MSI or MSI-X interrupts are enabled on a device, it stays in this
mode until they are disabled again. Since service drivers of the same
PCI-PCI Bridge port share the same physical device, if an individual
service driver enables or disables MSI/MSI-X mode it may result
unpredictable behavior.
To avoid this situation all service drivers are not permitted to
switch interrupt mode on its device. The PCI Express Port Bus driver
......@@ -187,17 +179,6 @@ driver. Service drivers should use (struct pcie_device*)dev->irq to
call request_irq/free_irq. In addition, the interrupt mode is stored
in the field interrupt_mode of struct pcie_device.
6.2 MSI-X Vector Resources
Similar to the MSI a device driver for an MSI-X capable device can
call pci_enable_msix to request MSI-X interrupts. All service drivers
are not permitted to switch interrupt mode on its device. The PCI
Express Port Bus driver is responsible for determining the interrupt
mode and this should be transparent to service drivers. Any attempt
by service driver to call pci_enable_msix/pci_disable_msix may
result unpredictable behavior. Service drivers should use
(struct pcie_device*)dev->irq and call request_irq/free_irq.
6.3 PCI Memory/IO Mapped Regions
Service drivers for PCI Express Power Management (PME), Advanced
......
Documentation/PCI/pci-error-recovery.txt
View file @ 60e8d3e1
......@@ -78,7 +78,6 @@ struct pci_error_handlers
{
int (*error_detected)(struct pci_dev *dev, enum pci_channel_state);
int (*mmio_enabled)(struct pci_dev *dev);
int (*link_reset)(struct pci_dev *dev);
int (*slot_reset)(struct pci_dev *dev);
void (*resume)(struct pci_dev *dev);
};
......@@ -104,8 +103,7 @@ if it implements any, it must implement error_detected(). If a callback
is not implemented, the corresponding feature is considered unsupported.
For example, if mmio_enabled() and resume() aren't there, then it
is assumed that the driver is not doing any direct recovery and requires
a slot reset. If link_reset() is not implemented, the card is assumed to
not care about link resets. Typically a driver will want to know about
a slot reset. Typically a driver will want to know about
a slot_reset().
The actual steps taken by a platform to recover from a PCI error
......@@ -232,25 +230,9 @@ proceeds to STEP 4 (Slot Reset)
STEP 3: Link Reset
------------------
The platform resets the link, and then calls the link_reset() callback
on all affected device drivers. This is a PCI-Express specific state
The platform resets the link. This is a PCI-Express specific step
and is done whenever a non-fatal error has been detected that can be
"solved" by resetting the link. This call informs the driver of the
reset and the driver should check to see if the device appears to be
in working condition.
The driver is not supposed to restart normal driver I/O operations
at this point. It should limit itself to "probing" the device to
check its recoverability status. If all is right, then the platform
will call resume() once all drivers have ack'd link_reset().
Result codes:
(identical to STEP 3 (MMIO Enabled)
The platform then proceeds to either STEP 4 (Slot Reset) or STEP 5
(Resume Operations).
>>> The current powerpc implementation does not implement this callback.
"solved" by resetting the link.
STEP 4: Slot Reset
------------------
......
Documentation/PCI/pci.txt
View file @ 60e8d3e1
......@@ -382,18 +382,18 @@ The fundamental difference between MSI and MSI-X is how multiple
"vectors" get allocated. MSI requires contiguous blocks of vectors
while MSI-X can allocate several individual ones.
MSI capability can be enabled by calling pci_enable_msi() or
pci_enable_msix() before calling request_irq(). This causes
the PCI support to program CPU vector data into the PCI device
capability registers.
If your PCI device supports both, try to enable MSI-X first.
Only one can be enabled at a time. Many architectures, chip-sets,
or BIOSes do NOT support MSI or MSI-X and the call to pci_enable_msi/msix
will fail. This is important to note since many drivers have
two (or more) interrupt handlers: one for MSI/MSI-X and another for IRQs.
They choose which handler to register with request_irq() based on the
return value from pci_enable_msi/msix().
MSI capability can be enabled by calling pci_alloc_irq_vectors() with the
PCI_IRQ_MSI and/or PCI_IRQ_MSIX flags before calling request_irq(). This
causes the PCI support to program CPU vector data into the PCI device
capability registers. Many architectures, chip-sets, or BIOSes do NOT
support MSI or MSI-X and a call to pci_alloc_irq_vectors with just
the PCI_IRQ_MSI and PCI_IRQ_MSIX flags will fail, so try to always
specify PCI_IRQ_LEGACY as well.
Drivers that have different interrupt handlers for MSI/MSI-X and
legacy INTx should chose the right one based on the msi_enabled
and msix_enabled flags in the pci_dev structure after calling
pci_alloc_irq_vectors.
There are (at least) two really good reasons for using MSI:
1) MSI is an exclusive interrupt vector by definition.
......
Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
View file @ 60e8d3e1
......@@ -42,3 +42,40 @@ Hip05 Example (note that Hip06 is the same except compatible):
0x0 0 0 4 &mbigen_pcie 4 13>;
status = "ok";
};
HiSilicon Hip06/Hip07 PCIe host bridge DT (almost-ECAM) description.
The properties and their meanings are identical to those described in
host-generic-pci.txt except as listed below.
Properties of the host controller node that differ from
host-generic-pci.txt:
- compatible : Must be "hisilicon,pcie-almost-ecam"
- reg : Two entries: First the ECAM configuration space for any
other bus underneath the root bus. Second, the base
and size of the HiSilicon host bridge registers include
the RC's own config space.
Example:
pcie0: pcie@a0090000 {
compatible = "hisilicon,pcie-almost-ecam";
reg = <0 0xb0000000 0 0x2000000>, /* ECAM configuration space */
<0 0xa0090000 0 0x10000>; /* host bridge registers */
bus-range = <0 31>;
msi-map = <0x0000 &its_dsa 0x0000 0x2000>;
msi-map-mask = <0xffff>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
dma-coherent;
ranges = <0x02000000 0 0xb2000000 0x0 0xb2000000 0 0x5ff0000
0x01000000 0 0 0 0xb7ff0000 0 0x10000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0xf800 0 0 7>;
interrupt-map = <0x0 0 0 1 &mbigen_pcie0 650 4
0x0 0 0 2 &mbigen_pcie0 650 4
0x0 0 0 3 &mbigen_pcie0 650 4
0x0 0 0 4 &mbigen_pcie0 650 4>;
status = "ok";
};
Documentation/devicetree/bindings/pci/mvebu-pci.txt
View file @ 60e8d3e1
......@@ -78,7 +78,8 @@ and the following optional properties:
multiple lanes. If this property is not found, we assume that the
value is 0.
- reset-gpios: optional gpio to PERST#
- reset-delay-us: delay in us to wait after reset de-assertion
- reset-delay-us: delay in us to wait after reset de-assertion, if not
specified will default to 100ms, as required by the PCIe specification.
Example:
......
Documentation/devicetree/bindings/pci/rcar-pci.txt
View file @ 60e8d3e1
......@@ -6,6 +6,7 @@ compatible: "renesas,pcie-r8a7779" for the R8A7779 SoC;
"renesas,pcie-r8a7791" for the R8A7791 SoC;
"renesas,pcie-r8a7793" for the R8A7793 SoC;
"renesas,pcie-r8a7795" for the R8A7795 SoC;
"renesas,pcie-r8a7796" for the R8A7796 SoC;
"renesas,pcie-rcar-gen2" for a generic R-Car Gen2 compatible device.
"renesas,pcie-rcar-gen3" for a generic R-Car Gen3 compatible device.
......
Documentation/devicetree/bindings/pci/rockchip-pcie.txt
View file @ 60e8d3e1
......@@ -43,6 +43,8 @@ Required properties:
- interrupt-map-mask and interrupt-map: standard PCI properties
Optional Property:
- aspm-no-l0s: RC won't support ASPM L0s. This property is needed if
using 24MHz OSC for RC's PHY.
- ep-gpios: contain the entry for pre-reset gpio
- num-lanes: number of lanes to use
- vpcie3v3-supply: The phandle to the 3.3v regulator to use for PCIe.
......
Documentation/devicetree/bindings/pci/samsung,exynos5440-pcie.txt
View file @ 60e8d3e1
......@@ -7,8 +7,19 @@ Required properties:
- compatible: "samsung,exynos5440-pcie"
- reg: base addresses and lengths of the pcie controller,
the phy controller, additional register for the phy controller.
(Registers for the phy controller are DEPRECATED.
Use the PHY framework.)
- reg-names : First name should be set to "elbi".
And use the "config" instead of getting the confgiruation address space
from "ranges".
NOTE: When use the "config" property, reg-names must be set.
- interrupts: A list of interrupt outputs for level interrupt,
pulse interrupt, special interrupt.
- phys: From PHY binding. Phandle for the Generic PHY.
Refer to Documentation/devicetree/bindings/phy/samsung-phy.txt
Other common properties refer to
Documentation/devicetree/binding/pci/designware-pcie.txt
Example:
......@@ -54,6 +65,24 @@ SoC specific DT Entry:
num-lanes = <4>;
};
With using PHY framework:
pcie_phy0: pcie-phy@270000 {
...
reg = <0x270000 0x1000>, <0x271000 0x40>;
reg-names = "phy", "block";
...
};
pcie@290000 {
...
reg = <0x290000 0x1000>, <0x40000000 0x1000>;
reg-names = "elbi", "config";
phys = <&pcie_phy0>;
ranges = <0x81000000 0 0 0x60001000 0 0x00010000
0x82000000 0 0x60011000 0x60011000 0 0x1ffef000>;
...
};
Board specific DT Entry:
pcie@290000 {
......
Documentation/devicetree/bindings/phy/samsung-phy.txt
View file @ 60e8d3e1
......@@ -191,3 +191,20 @@ Example:
usbdrdphy0 = &usb3_phy0;
usbdrdphy1 = &usb3_phy1;
};
Samsung Exynos SoC series PCIe PHY controller
--------------------------------------------------
Required properties:
- compatible : Should be set to "samsung,exynos5440-pcie-phy"
- #phy-cells : Must be zero
- reg : a register used by phy driver.
- First is for phy register, second is for block register.
- reg-names : Must be set to "phy" and "block".
Example:
pcie_phy0: pcie-phy@270000 {
#phy-cells = <0>;
compatible = "samsung,exynos5440-pcie-phy";
reg = <0x270000 0x1000>, <0x271000 0x40>;
reg-names = "phy", "block";
};
MAINTAINERS
View file @ 60e8d3e1
......@@ -9551,7 +9551,7 @@ L: linux-pci@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org
S: Maintained
F: Documentation/devicetree/bindings/pci/pci-armada8k.txt
F: drivers/pci/host/pcie-armada8k.c
F: drivers/pci/dwc/pcie-armada8k.c
PCI DRIVER FOR APPLIEDMICRO XGENE
M: Tanmay Inamdar <tinamdar@apm.com>
......@@ -9569,7 +9569,7 @@ L: linuxppc-dev@lists.ozlabs.org
L: linux-pci@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org
S: Maintained
F: drivers/pci/host/*layerscape*
F: drivers/pci/dwc/*layerscape*
PCI DRIVER FOR IMX6
M: Richard Zhu <hongxing.zhu@nxp.com>
......@@ -9578,14 +9578,14 @@ 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*
F: drivers/pci/dwc/*imx6*
PCI DRIVER FOR TI KEYSTONE
M: Murali Karicheri <m-karicheri2@ti.com>
L: linux-pci@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: drivers/pci/host/*keystone*
F: drivers/pci/dwc/*keystone*
PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
M: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
......@@ -9617,7 +9617,7 @@ L: linux-omap@vger.kernel.org
L: linux-pci@vger.kernel.org
S: Supported
F: Documentation/devicetree/bindings/pci/ti-pci.txt
F: drivers/pci/host/pci-dra7xx.c
F: drivers/pci/dwc/pci-dra7xx.c
PCI DRIVER FOR RENESAS R-CAR
M: Simon Horman <horms@verge.net.au>
......@@ -9632,7 +9632,7 @@ L: linux-pci@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-samsung-soc@vger.kernel.org (moderated for non-subscribers)
S: Maintained
F: drivers/pci/host/pci-exynos.c
F: drivers/pci/dwc/pci-exynos.c
PCI DRIVER FOR SYNOPSIS DESIGNWARE
M: Jingoo Han <jingoohan1@gmail.com>
......@@ -9640,7 +9640,7 @@ M: Joao Pinto <Joao.Pinto@synopsys.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/designware-pcie.txt
F: drivers/pci/host/*designware*
F: drivers/pci/dwc/*designware*
PCI DRIVER FOR GENERIC OF HOSTS
M: Will Deacon <will.deacon@arm.com>
......@@ -9661,7 +9661,7 @@ PCIE DRIVER FOR ST SPEAR13XX
M: Pratyush Anand <pratyush.anand@gmail.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: drivers/pci/host/*spear*
F: drivers/pci/dwc/*spear*
PCI MSI DRIVER FOR ALTERA MSI IP
M: Ley Foon Tan <lftan@altera.com>
......@@ -9686,7 +9686,7 @@ L: linux-arm-kernel@axis.com
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/axis,artpec*
F: drivers/pci/host/*artpec*
F: drivers/pci/dwc/*artpec*
PCIE DRIVER FOR HISILICON
M: Zhou Wang <wangzhou1@hisilicon.com>
......@@ -9694,7 +9694,7 @@ M: Gabriele Paoloni <gabriele.paoloni@huawei.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
F: drivers/pci/host/pcie-hisi.c
F: drivers/pci/dwc/pcie-hisi.c
PCIE DRIVER FOR ROCKCHIP
M: Shawn Lin <shawn.lin@rock-chips.com>
......@@ -9710,7 +9710,7 @@ M: Stanimir Varbanov <svarbanov@mm-sol.com>
L: linux-pci@vger.kernel.org
L: linux-arm-msm@vger.kernel.org
S: Maintained
F: drivers/pci/host/*qcom*
F: drivers/pci/dwc/*qcom*
PCIE DRIVER FOR CAVIUM THUNDERX
M: David Daney <david.daney@cavium.com>
......
arch/x86/kernel/apic/msi.c
View file @ 60e8d3e1
......@@ -82,7 +82,7 @@ int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
if (domain == NULL)
return -ENOSYS;
return pci_msi_domain_alloc_irqs(domain, dev, nvec, type);
return msi_domain_alloc_irqs(domain, &dev->dev, nvec);
}
void native_teardown_msi_irq(unsigned int irq)
......
drivers/Makefile
View file @ 60e8d3e1
......@@ -15,6 +15,9 @@ obj-$(CONFIG_PINCTRL) += pinctrl/
obj-$(CONFIG_GPIOLIB) += gpio/
obj-y += pwm/
obj-$(CONFIG_PCI) += pci/
# PCI dwc controller drivers
obj-y += pci/dwc/
obj-$(CONFIG_PARISC) += parisc/
obj-$(CONFIG_RAPIDIO) += rapidio/
obj-y += video/
......
drivers/acpi/pci_mcfg.c
View file @ 60e8d3e1
......@@ -195,11 +195,10 @@ int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
goto skip_lookup;
/*
* We expect exact match, unless MCFG entry end bus covers more than
* specified by caller.
* We expect the range in bus_res in the coverage of MCFG bus range.
*/
list_for_each_entry(e, &pci_mcfg_list, list) {
if (e->segment == seg && e->bus_start == bus_res->start &&
if (e->segment == seg && e->bus_start <= bus_res->start &&
e->bus_end >= bus_res->end) {
root->mcfg_addr = e->addr;
}
......
drivers/net/ethernet/amd/xgbe/xgbe-pci.c
View file @ 60e8d3e1
......@@ -122,104 +122,40 @@
#include "xgbe.h"
#include "xgbe-common.h"
static int xgbe_config_msi(struct xgbe_prv_data *pdata)
static int xgbe_config_multi_msi(struct xgbe_prv_data *pdata)
{
unsigned int msi_count;
unsigned int vector_count;
unsigned int i, j;
int ret;
msi_count = XGBE_MSIX_BASE_COUNT;
msi_count += max(pdata->rx_ring_count,
vector_count = XGBE_MSI_BASE_COUNT;
vector_count += max(pdata->rx_ring_count,
pdata->tx_ring_count);
msi_count = roundup_pow_of_two(msi_count);
ret = pci_enable_msi_exact(pdata->pcidev, msi_count);
ret = pci_alloc_irq_vectors(pdata->pcidev, XGBE_MSI_MIN_COUNT,
vector_count, PCI_IRQ_MSI | PCI_IRQ_MSIX);
if (ret < 0) {
dev_info(pdata->dev, "MSI request for %u interrupts failed\n",
msi_count);
ret = pci_enable_msi(pdata->pcidev);
if (ret < 0) {
dev_info(pdata->dev, "MSI enablement failed\n");
return ret;
}
msi_count = 1;
}
pdata->irq_count = msi_count;
pdata->dev_irq = pdata->pcidev->irq;
if (msi_count > 1) {
pdata->ecc_irq = pdata->pcidev->irq + 1;
pdata->i2c_irq = pdata->pcidev->irq + 2;
pdata->an_irq = pdata->pcidev->irq + 3;
for (i = XGBE_MSIX_BASE_COUNT, j = 0;
(i < msi_count) && (j < XGBE_MAX_DMA_CHANNELS);
i++, j++)
pdata->channel_irq[j] = pdata->pcidev->irq + i;
pdata->channel_irq_count = j;
pdata->per_channel_irq = 1;
pdata->channel_irq_mode = XGBE_IRQ_MODE_LEVEL;
} else {
pdata->ecc_irq = pdata->pcidev->irq;
pdata->i2c_irq = pdata->pcidev->irq;
pdata->an_irq = pdata->pcidev->irq;
}
if (netif_msg_probe(pdata))
dev_dbg(pdata->dev, "MSI interrupts enabled\n");
return 0;
}
static int xgbe_config_msix(struct xgbe_prv_data *pdata)
{
unsigned int msix_count;
unsigned int i, j;
int ret;
msix_count = XGBE_MSIX_BASE_COUNT;
msix_count += max(pdata->rx_ring_count,
pdata->tx_ring_count);
pdata->msix_entries = devm_kcalloc(pdata->dev, msix_count,
sizeof(struct msix_entry),
GFP_KERNEL);
if (!pdata->msix_entries)
return -ENOMEM;
for (i = 0; i < msix_count; i++)
pdata->msix_entries[i].entry = i;
ret = pci_enable_msix_range(pdata->pcidev, pdata->msix_entries,
XGBE_MSIX_MIN_COUNT, msix_count);
if (ret < 0) {
dev_info(pdata->dev, "MSI-X enablement failed\n");
devm_kfree(pdata->dev, pdata->msix_entries);
pdata->msix_entries = NULL;
dev_info(pdata->dev, "multi MSI/MSI-X enablement failed\n");
return ret;
}
pdata->irq_count = ret;
pdata->dev_irq = pdata->msix_entries[0].vector;
pdata->ecc_irq = pdata->msix_entries[1].vector;
pdata->i2c_irq = pdata->msix_entries[2].vector;
pdata->an_irq = pdata->msix_entries[3].vector;
pdata->dev_irq = pci_irq_vector(pdata->pcidev, 0);
pdata->ecc_irq = pci_irq_vector(pdata->pcidev, 1);
pdata->i2c_irq = pci_irq_vector(pdata->pcidev, 2);
pdata->an_irq = pci_irq_vector(pdata->pcidev, 3);
for (i = XGBE_MSIX_BASE_COUNT, j = 0; i < ret; i++, j++)
pdata->channel_irq[j] = pdata->msix_entries[i].vector;
for (i = XGBE_MSI_BASE_COUNT, j = 0; i < ret; i++, j++)
pdata->channel_irq[j] = pci_irq_vector(pdata->pcidev, i);
pdata->channel_irq_count = j;
pdata->per_channel_irq = 1;
pdata->channel_irq_mode = XGBE_IRQ_MODE_LEVEL;
if (netif_msg_probe(pdata))
dev_dbg(pdata->dev, "MSI-X interrupts enabled\n");
dev_dbg(pdata->dev, "multi %s interrupts enabled\n",
pdata->pcidev->msix_enabled ? "MSI-X" : "MSI");
return 0;
}
......@@ -228,21 +164,28 @@ static int xgbe_config_irqs(struct xgbe_prv_data *pdata)
{
int ret;
ret = xgbe_config_msix(pdata);
ret = xgbe_config_multi_msi(pdata);
if (!ret)
goto out;
ret = xgbe_config_msi(pdata);
if (!ret)
goto out;
ret = pci_alloc_irq_vectors(pdata->pcidev, 1, 1,
PCI_IRQ_LEGACY | PCI_IRQ_MSI);
if (ret < 0) {
dev_info(pdata->dev, "single IRQ enablement failed\n");
return ret;
}
pdata->irq_count = 1;
pdata->irq_shared = 1;
pdata->channel_irq_count = 1;
pdata->dev_irq = pdata->pcidev->irq;
pdata->ecc_irq = pdata->pcidev->irq;
pdata->i2c_irq = pdata->pcidev->irq;
pdata->an_irq = pdata->pcidev->irq;
pdata->dev_irq = pci_irq_vector(pdata->pcidev, 0);
pdata->ecc_irq = pci_irq_vector(pdata->pcidev, 0);
pdata->i2c_irq = pci_irq_vector(pdata->pcidev, 0);
pdata->an_irq = pci_irq_vector(pdata->pcidev, 0);
if (netif_msg_probe(pdata))
dev_dbg(pdata->dev, "single %s interrupt enabled\n",
pdata->pcidev->msi_enabled ? "MSI" : "legacy");
out:
if (netif_msg_probe(pdata)) {
......@@ -425,12 +368,15 @@ static int xgbe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* Configure the netdev resource */
ret = xgbe_config_netdev(pdata);
if (ret)
goto err_pci_enable;
goto err_irq_vectors;
netdev_notice(pdata->netdev, "net device enabled\n");
return 0;
err_irq_vectors:
pci_free_irq_vectors(pdata->pcidev);
err_pci_enable:
xgbe_free_pdata(pdata);
......@@ -446,6 +392,8 @@ static void xgbe_pci_remove(struct pci_dev *pdev)
xgbe_deconfig_netdev(pdata);
pci_free_irq_vectors(pdata->pcidev);
xgbe_free_pdata(pdata);
}
......
drivers/net/ethernet/amd/xgbe/xgbe.h
View file @ 60e8d3e1
......@@ -211,9 +211,9 @@
#define XGBE_MAC_PROP_OFFSET 0x1d000
#define XGBE_I2C_CTRL_OFFSET 0x1e000
/* PCI MSIx support */
#define XGBE_MSIX_BASE_COUNT 4
#define XGBE_MSIX_MIN_COUNT (XGBE_MSIX_BASE_COUNT + 1)
/* PCI MSI/MSIx support */
#define XGBE_MSI_BASE_COUNT 4
#define XGBE_MSI_MIN_COUNT (XGBE_MSI_BASE_COUNT + 1)
/* PCI clock frequencies */
#define XGBE_V2_DMA_CLOCK_FREQ 500000000 /* 500 MHz */
......@@ -982,14 +982,12 @@ struct xgbe_prv_data {
unsigned int desc_ded_count;
unsigned int desc_sec_count;
struct msix_entry *msix_entries;
int dev_irq;
int ecc_irq;
int i2c_irq;
int channel_irq[XGBE_MAX_DMA_CHANNELS];
unsigned int per_channel_irq;
unsigned int irq_shared;
unsigned int irq_count;
unsigned int channel_irq_count;
unsigned int channel_irq_mode;
......
drivers/pci/Kconfig
View file @ 60e8d3e1
......@@ -132,4 +132,5 @@ config PCI_HYPERV
PCI devices from a PCI backend to support PCI driver domains.
source "drivers/pci/hotplug/Kconfig"
source "drivers/pci/dwc/Kconfig"
source "drivers/pci/host/Kconfig"
drivers/pci/access.c
View file @ 60e8d3e1
......@@ -367,7 +367,7 @@ static size_t pci_vpd_size(struct pci_dev *dev, size_t old_size)
static int pci_vpd_wait(struct pci_dev *dev)
{
struct pci_vpd *vpd = dev->vpd;
unsigned long timeout = jiffies + msecs_to_jiffies(50);
unsigned long timeout = jiffies + msecs_to_jiffies(125);
unsigned long max_sleep = 16;
u16 status;
int ret;
......@@ -684,8 +684,9 @@ void pci_cfg_access_unlock(struct pci_dev *dev)
WARN_ON(!dev->block_cfg_access);
dev->block_cfg_access = 0;
wake_up_all(&pci_cfg_wait);
raw_spin_unlock_irqrestore(&pci_lock, flags);
wake_up_all(&pci_cfg_wait);
}
EXPORT_SYMBOL_GPL(pci_cfg_access_unlock);
......
drivers/pci/dwc/Kconfig 0 → 100644
View file @ 60e8d3e1
menu "DesignWare PCI Core Support"
config PCIE_DW
bool
config PCIE_DW_HOST
bool
depends on PCI
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW
config PCI_DRA7XX
bool "TI DRA7xx PCIe controller"
depends on PCI
depends on OF && HAS_IOMEM && TI_PIPE3
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW_HOST
help
Enables support for the PCIe controller in the DRA7xx SoC. There
are two instances of PCIe controller in DRA7xx. This controller can
act both as EP and RC. This reuses the Designware core.
config PCIE_DW_PLAT
bool "Platform bus based DesignWare PCIe Controller"
depends on PCI
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW_HOST
---help---
This selects the DesignWare PCIe controller support. Select this if
you have a PCIe controller on Platform bus.
If you have a controller with this interface, say Y or M here.
If unsure, say N.
config PCI_EXYNOS
bool "Samsung Exynos PCIe controller"
depends on PCI
depends on SOC_EXYNOS5440
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
config PCI_IMX6
bool "Freescale i.MX6 PCIe controller"
depends on PCI
depends on SOC_IMX6Q
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
config PCIE_SPEAR13XX
bool "STMicroelectronics SPEAr PCIe controller"
depends on PCI
depends on ARCH_SPEAR13XX
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
help
Say Y here if you want PCIe support on SPEAr13XX SoCs.
config PCI_KEYSTONE
bool "TI Keystone PCIe controller"
depends on PCI
depends on ARCH_KEYSTONE
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
help
Say Y here if you want to enable PCI controller support on Keystone
SoCs. The PCI controller on Keystone is based on Designware hardware
and therefore the driver re-uses the Designware core functions to
implement the driver.
config PCI_LAYERSCAPE
bool "Freescale Layerscape PCIe controller"
depends on PCI
depends on OF && (ARM || ARCH_LAYERSCAPE)
depends on PCI_MSI_IRQ_DOMAIN
select MFD_SYSCON
select PCIE_DW_HOST
help
Say Y here if you want PCIe controller support on Layerscape SoCs.
config PCI_HISI
depends on OF && ARM64
bool "HiSilicon Hip05 and Hip06 SoCs PCIe controllers"
depends on PCI
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
help
Say Y here if you want PCIe controller support on HiSilicon
Hip05 and Hip06 SoCs
config PCIE_QCOM
bool "Qualcomm PCIe controller"
depends on PCI
depends on ARCH_QCOM && OF
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
help
Say Y here to enable PCIe controller support on Qualcomm SoCs. The
PCIe controller uses the Designware core plus Qualcomm-specific
hardware wrappers.
config PCIE_ARMADA_8K
bool "Marvell Armada-8K PCIe controller"
depends on PCI
depends on ARCH_MVEBU
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
help
Say Y here if you want to enable PCIe controller support on
Armada-8K SoCs. The PCIe controller on Armada-8K is based on
Designware hardware and therefore the driver re-uses the
Designware core functions to implement the driver.
config PCIE_ARTPEC6
bool "Axis ARTPEC-6 PCIe controller"
depends on PCI
depends on MACH_ARTPEC6
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW_HOST
help
Say Y here to enable PCIe controller support on Axis ARTPEC-6
SoCs. This PCIe controller uses the DesignWare core.
endmenu
drivers/pci/dwc/Makefile 0 → 100644
View file @ 60e8d3e1
obj-$(CONFIG_PCIE_DW) += pcie-designware.o
obj-$(CONFIG_PCIE_DW_HOST) += pcie-designware-host.o
obj-$(CONFIG_PCIE_DW_PLAT) += pcie-designware-plat.o
obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o
obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o
obj-$(CONFIG_PCI_IMX6) += pci-imx6.o
obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o
obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o
obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
obj-$(CONFIG_PCIE_ARMADA_8K) += pcie-armada8k.o
obj-$(CONFIG_PCIE_ARTPEC6) += pcie-artpec6.o
# The following drivers are for devices that use the generic ACPI
# pci_root.c driver but don't support standard ECAM config access.
# They contain MCFG quirks to replace the generic ECAM accessors with
# device-specific ones that are shared with the DT driver.
# The ACPI driver is generic and should not require driver-specific
# config options to be enabled, so we always build these drivers on
# ARM64 and use internal ifdefs to only build the pieces we need
# depending on whether ACPI, the DT driver, or both are enabled.
obj-$(CONFIG_ARM64) += pcie-hisi.o
drivers/pci/host/pci-keystone-dw.c → drivers/pci/dwc/pci-keystone-dw.c
View file @ 60e8d3e1
......@@ -72,7 +72,7 @@
/* Config space registers */
#define DEBUG0 0x728
#define to_keystone_pcie(x) container_of(x, struct keystone_pcie, pp)
#define to_keystone_pcie(x) dev_get_drvdata((x)->dev)
static inline void update_reg_offset_bit_pos(u32 offset, u32 *reg_offset,
u32 *bit_pos)
......@@ -83,7 +83,8 @@ static inline void update_reg_offset_bit_pos(u32 offset, u32 *reg_offset,
phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp)
{
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
return ks_pcie->app.start + MSI_IRQ;
}
......@@ -100,8 +101,9 @@ static void ks_dw_app_writel(struct keystone_pcie *ks_pcie, u32 offset, u32 val)
void ks_dw_pcie_handle_msi_irq(struct keystone_pcie *ks_pcie, int offset)
{
struct pcie_port *pp = &ks_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = pci->dev;
u32 pending, vector;
int src, virq;
......@@ -128,10 +130,12 @@ static void ks_dw_pcie_msi_irq_ack(struct irq_data *d)
struct keystone_pcie *ks_pcie;
struct msi_desc *msi;
struct pcie_port *pp;
struct dw_pcie *pci;
msi = irq_data_get_msi_desc(d);
pp = (struct pcie_port *) msi_desc_to_pci_sysdata(msi);
ks_pcie = to_keystone_pcie(pp);
pci = to_dw_pcie_from_pp(pp);
ks_pcie = to_keystone_pcie(pci);
offset = d->irq - irq_linear_revmap(pp->irq_domain, 0);
update_reg_offset_bit_pos(offset, &reg_offset, &bit_pos);
......@@ -143,7 +147,8 @@ static void ks_dw_pcie_msi_irq_ack(struct irq_data *d)
void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq)
{
u32 reg_offset, bit_pos;
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
update_reg_offset_bit_pos(irq, &reg_offset, &bit_pos);
ks_dw_app_writel(ks_pcie, MSI0_IRQ_ENABLE_SET + (reg_offset << 4),
......@@ -153,7 +158,8 @@ void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq)
void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq)
{
u32 reg_offset, bit_pos;
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
update_reg_offset_bit_pos(irq, &reg_offset, &bit_pos);
ks_dw_app_writel(ks_pcie, MSI0_IRQ_ENABLE_CLR + (reg_offset << 4),
......@@ -165,11 +171,13 @@ static void ks_dw_pcie_msi_irq_mask(struct irq_data *d)
struct keystone_pcie *ks_pcie;
struct msi_desc *msi;
struct pcie_port *pp;
struct dw_pcie *pci;
u32 offset;
msi = irq_data_get_msi_desc(d);
pp = (struct pcie_port *) msi_desc_to_pci_sysdata(msi);
ks_pcie = to_keystone_pcie(pp);
pci = to_dw_pcie_from_pp(pp);
ks_pcie = to_keystone_pcie(pci);
offset = d->irq - irq_linear_revmap(pp->irq_domain, 0);
/* Mask the end point if PVM implemented */
......@@ -186,11 +194,13 @@ static void ks_dw_pcie_msi_irq_unmask(struct irq_data *d)
struct keystone_pcie *ks_pcie;
struct msi_desc *msi;
struct pcie_port *pp;
struct dw_pcie *pci;
u32 offset;
msi = irq_data_get_msi_desc(d);
pp = (struct pcie_port *) msi_desc_to_pci_sysdata(msi);
ks_pcie = to_keystone_pcie(pp);
pci = to_dw_pcie_from_pp(pp);
ks_pcie = to_keystone_pcie(pci);
offset = d->irq - irq_linear_revmap(pp->irq_domain, 0);
/* Mask the end point if PVM implemented */
......@@ -225,8 +235,9 @@ static const struct irq_domain_ops ks_dw_pcie_msi_domain_ops = {
int ks_dw_pcie_msi_host_init(struct pcie_port *pp, struct msi_controller *chip)
{
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct device *dev = pp->dev;
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
struct device *dev = pci->dev;
int i;
pp->irq_domain = irq_domain_add_linear(ks_pcie->msi_intc_np,
......@@ -254,8 +265,8 @@ void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie)
void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset)
{
struct pcie_port *pp = &ks_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = ks_pcie->pci;
struct device *dev = pci->dev;
u32 pending;
int virq;
......@@ -285,7 +296,7 @@ irqreturn_t ks_dw_pcie_handle_error_irq(struct keystone_pcie *ks_pcie)
return IRQ_NONE;
if (status & ERR_FATAL_IRQ)
dev_err(ks_pcie->pp.dev, "fatal error (status %#010x)\n",
dev_err(ks_pcie->pci->dev, "fatal error (status %#010x)\n",
status);
/* Ack the IRQ; status bits are RW1C */
......@@ -366,15 +377,16 @@ static void ks_dw_pcie_clear_dbi_mode(struct keystone_pcie *ks_pcie)
void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie)
{
struct pcie_port *pp = &ks_pcie->pp;
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
u32 start = pp->mem->start, end = pp->mem->end;
int i, tr_size;
u32 val;
/* Disable BARs for inbound access */
ks_dw_pcie_set_dbi_mode(ks_pcie);
dw_pcie_writel_rc(pp, PCI_BASE_ADDRESS_0, 0);
dw_pcie_writel_rc(pp, PCI_BASE_ADDRESS_1, 0);
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, 0);
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_1, 0);
ks_dw_pcie_clear_dbi_mode(ks_pcie);
/* Set outbound translation size per window division */
......@@ -415,11 +427,12 @@ static void __iomem *ks_pcie_cfg_setup(struct keystone_pcie *ks_pcie, u8 bus,
unsigned int devfn)
{
u8 device = PCI_SLOT(devfn), function = PCI_FUNC(devfn);
struct pcie_port *pp = &ks_pcie->pp;
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
u32 regval;
if (bus == 0)
return pp->dbi_base;
return pci->dbi_base;
regval = (bus << 16) | (device << 8) | function;
......@@ -438,25 +451,27 @@ static void __iomem *ks_pcie_cfg_setup(struct keystone_pcie *ks_pcie, u8 bus,
int ks_dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val)
{
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
u8 bus_num = bus->number;
void __iomem *addr;
addr = ks_pcie_cfg_setup(ks_pcie, bus_num, devfn);
return dw_pcie_cfg_read(addr + where, size, val);
return dw_pcie_read(addr + where, size, val);
}
int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 val)
{
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
u8 bus_num = bus->number;
void __iomem *addr;
addr = ks_pcie_cfg_setup(ks_pcie, bus_num, devfn);
return dw_pcie_cfg_write(addr + where, size, val);
return dw_pcie_write(addr + where, size, val);
}
/**
......@@ -466,14 +481,15 @@ int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
*/
void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp)
{
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
/* Configure and set up BAR0 */
ks_dw_pcie_set_dbi_mode(ks_pcie);
/* Enable BAR0 */
dw_pcie_writel_rc(pp, PCI_BASE_ADDRESS_0, 1);
dw_pcie_writel_rc(pp, PCI_BASE_ADDRESS_0, SZ_4K - 1);
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, 1);
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, SZ_4K - 1);
ks_dw_pcie_clear_dbi_mode(ks_pcie);
......@@ -481,17 +497,17 @@ void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp)
* For BAR0, just setting bus address for inbound writes (MSI) should
* be sufficient. Use physical address to avoid any conflicts.
*/
dw_pcie_writel_rc(pp, PCI_BASE_ADDRESS_0, ks_pcie->app.start);
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, ks_pcie->app.start);
}
/**
* ks_dw_pcie_link_up() - Check if link up
*/
int ks_dw_pcie_link_up(struct pcie_port *pp)
int ks_dw_pcie_link_up(struct dw_pcie *pci)
{
u32 val;
val = dw_pcie_readl_rc(pp, DEBUG0);
val = dw_pcie_readl_dbi(pci, DEBUG0);
return (val & LTSSM_STATE_MASK) == LTSSM_STATE_L0;
}
......@@ -519,22 +535,23 @@ void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie)
int __init ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie,
struct device_node *msi_intc_np)
{
struct pcie_port *pp = &ks_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = pci->dev;
struct platform_device *pdev = to_platform_device(dev);
struct resource *res;
/* Index 0 is the config reg. space address */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pp->dbi_base = devm_ioremap_resource(dev, res);
if (IS_ERR(pp->dbi_base))
return PTR_ERR(pp->dbi_base);
pci->dbi_base = devm_ioremap_resource(dev, res);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);
/*
* We set these same and is used in pcie rd/wr_other_conf
* functions
*/
pp->va_cfg0_base = pp->dbi_base + SPACE0_REMOTE_CFG_OFFSET;
pp->va_cfg0_base = pci->dbi_base + SPACE0_REMOTE_CFG_OFFSET;
pp->va_cfg1_base = pp->va_cfg0_base;
/* Index 1 is the application reg. space address */
......
drivers/pci/host/pci-keystone.c → drivers/pci/dwc/pci-keystone.c
View file @ 60e8d3e1
......@@ -44,7 +44,7 @@
#define PCIE_RC_K2E 0xb009
#define PCIE_RC_K2L 0xb00a
#define to_keystone_pcie(x) container_of(x, struct keystone_pcie, pp)
#define to_keystone_pcie(x) dev_get_drvdata((x)->dev)
static void quirk_limit_mrrs(struct pci_dev *dev)
{
......@@ -88,13 +88,14 @@ DECLARE_PCI_FIXUP_ENABLE(PCI_ANY_ID, PCI_ANY_ID, quirk_limit_mrrs);
static int ks_pcie_establish_link(struct keystone_pcie *ks_pcie)
{
struct pcie_port *pp = &ks_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = pci->dev;
unsigned int retries;
dw_pcie_setup_rc(pp);
if (dw_pcie_link_up(pp)) {
if (dw_pcie_link_up(pci)) {
dev_err(dev, "Link already up\n");
return 0;
}
......@@ -102,7 +103,7 @@ static int ks_pcie_establish_link(struct keystone_pcie *ks_pcie)
/* check if the link is up or not */
for (retries = 0; retries < 5; retries++) {
ks_dw_pcie_initiate_link_train(ks_pcie);
if (!dw_pcie_wait_for_link(pp))
if (!dw_pcie_wait_for_link(pci))
return 0;
}
......@@ -115,8 +116,8 @@ static void ks_pcie_msi_irq_handler(struct irq_desc *desc)
unsigned int irq = irq_desc_get_irq(desc);
struct keystone_pcie *ks_pcie = irq_desc_get_handler_data(desc);
u32 offset = irq - ks_pcie->msi_host_irqs[0];
struct pcie_port *pp = &ks_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = ks_pcie->pci;
struct device *dev = pci->dev;
struct irq_chip *chip = irq_desc_get_chip(desc);
dev_dbg(dev, "%s, irq %d\n", __func__, irq);
......@@ -143,8 +144,8 @@ static void ks_pcie_legacy_irq_handler(struct irq_desc *desc)
{
unsigned int irq = irq_desc_get_irq(desc);
struct keystone_pcie *ks_pcie = irq_desc_get_handler_data(desc);
struct pcie_port *pp = &ks_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = ks_pcie->pci;
struct device *dev = pci->dev;
u32 irq_offset = irq - ks_pcie->legacy_host_irqs[0];
struct irq_chip *chip = irq_desc_get_chip(desc);
......@@ -164,7 +165,7 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie,
char *controller, int *num_irqs)
{
int temp, max_host_irqs, legacy = 1, *host_irqs;
struct device *dev = ks_pcie->pp.dev;
struct device *dev = ks_pcie->pci->dev;
struct device_node *np_pcie = dev->of_node, **np_temp;
if (!strcmp(controller, "msi-interrupt-controller"))
......@@ -262,24 +263,25 @@ static int keystone_pcie_fault(unsigned long addr, unsigned int fsr,
static void __init ks_pcie_host_init(struct pcie_port *pp)
{
struct keystone_pcie *ks_pcie = to_keystone_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
u32 val;
ks_pcie_establish_link(ks_pcie);
ks_dw_pcie_setup_rc_app_regs(ks_pcie);
ks_pcie_setup_interrupts(ks_pcie);
writew(PCI_IO_RANGE_TYPE_32 | (PCI_IO_RANGE_TYPE_32 << 8),
pp->dbi_base + PCI_IO_BASE);
pci->dbi_base + PCI_IO_BASE);
/* update the Vendor ID */
writew(ks_pcie->device_id, pp->dbi_base + PCI_DEVICE_ID);
writew(ks_pcie->device_id, pci->dbi_base + PCI_DEVICE_ID);
/* update the DEV_STAT_CTRL to publish right mrrs */
val = readl(pp->dbi_base + PCIE_CAP_BASE + PCI_EXP_DEVCTL);
val = readl(pci->dbi_base + PCIE_CAP_BASE + PCI_EXP_DEVCTL);
val &= ~PCI_EXP_DEVCTL_READRQ;
/* set the mrrs to 256 bytes */
val |= BIT(12);
writel(val, pp->dbi_base + PCIE_CAP_BASE + PCI_EXP_DEVCTL);
writel(val, pci->dbi_base + PCIE_CAP_BASE + PCI_EXP_DEVCTL);
/*
* PCIe access errors that result into OCP errors are caught by ARM as
......@@ -289,10 +291,9 @@ static void __init ks_pcie_host_init(struct pcie_port *pp)
"Asynchronous external abort");
}
static struct pcie_host_ops keystone_pcie_host_ops = {
static struct dw_pcie_host_ops keystone_pcie_host_ops = {
.rd_other_conf = ks_dw_pcie_rd_other_conf,
.wr_other_conf = ks_dw_pcie_wr_other_conf,
.link_up = ks_dw_pcie_link_up,
.host_init = ks_pcie_host_init,
.msi_set_irq = ks_dw_pcie_msi_set_irq,
.msi_clear_irq = ks_dw_pcie_msi_clear_irq,
......@@ -311,8 +312,9 @@ static irqreturn_t pcie_err_irq_handler(int irq, void *priv)
static int __init ks_add_pcie_port(struct keystone_pcie *ks_pcie,
struct platform_device *pdev)
{
struct pcie_port *pp = &ks_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = &pdev->dev;
int ret;
ret = ks_pcie_get_irq_controller_info(ks_pcie,
......@@ -365,6 +367,10 @@ static const struct of_device_id ks_pcie_of_match[] = {
{ },
};
static const struct dw_pcie_ops dw_pcie_ops = {
.link_up = ks_dw_pcie_link_up,
};
static int __exit ks_pcie_remove(struct platform_device *pdev)
{
struct keystone_pcie *ks_pcie = platform_get_drvdata(pdev);
......@@ -377,8 +383,8 @@ static int __exit ks_pcie_remove(struct platform_device *pdev)
static int __init ks_pcie_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct dw_pcie *pci;
struct keystone_pcie *ks_pcie;
struct pcie_port *pp;
struct resource *res;
void __iomem *reg_p;
struct phy *phy;
......@@ -388,8 +394,12 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
if (!ks_pcie)
return -ENOMEM;
pp = &ks_pcie->pp;
pp->dev = dev;
pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
if (!pci)
return -ENOMEM;
pci->dev = dev;
pci->ops = &dw_pcie_ops;
/* initialize SerDes Phy if present */
phy = devm_phy_get(dev, "pcie-phy");
......@@ -422,6 +432,8 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
if (ret)
return ret;
platform_set_drvdata(pdev, ks_pcie);
ret = ks_add_pcie_port(ks_pcie, pdev);
if (ret < 0)
goto fail_clk;
......
drivers/pci/host/pci-keystone.h → drivers/pci/dwc/pci-keystone.h
View file @ 60e8d3e1
......@@ -17,7 +17,7 @@
#define MAX_LEGACY_HOST_IRQS 4
struct keystone_pcie {
struct pcie_port pp; /* pp.dbi_base is DT 0th res */
struct dw_pcie *pci;
struct clk *clk;
/* PCI Device ID */
u32 device_id;
......@@ -54,10 +54,10 @@ int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
int ks_dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val);
void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie);
int ks_dw_pcie_link_up(struct pcie_port *pp);
void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie);
void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq);
void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq);
void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp);
int ks_dw_pcie_msi_host_init(struct pcie_port *pp,
struct msi_controller *chip);
int ks_dw_pcie_link_up(struct dw_pcie *pci);
drivers/pci/host/pci-layerscape.c → drivers/pci/dwc/pci-layerscape.c
View file @ 60e8d3e1
......@@ -39,24 +39,26 @@ struct ls_pcie_drvdata {
u32 lut_offset;
u32 ltssm_shift;
u32 lut_dbg;
struct pcie_host_ops *ops;
struct dw_pcie_host_ops *ops;
const struct dw_pcie_ops *dw_pcie_ops;
};
struct ls_pcie {
struct pcie_port pp; /* pp.dbi_base is DT regs */
struct dw_pcie *pci;
void __iomem *lut;
struct regmap *scfg;
const struct ls_pcie_drvdata *drvdata;
int index;
};
#define to_ls_pcie(x) container_of(x, struct ls_pcie, pp)
#define to_ls_pcie(x) dev_get_drvdata((x)->dev)
static bool ls_pcie_is_bridge(struct ls_pcie *pcie)
{
struct dw_pcie *pci = pcie->pci;
u32 header_type;
header_type = ioread8(pcie->pp.dbi_base + PCI_HEADER_TYPE);
header_type = ioread8(pci->dbi_base + PCI_HEADER_TYPE);
header_type &= 0x7f;
return header_type == PCI_HEADER_TYPE_BRIDGE;
......@@ -65,29 +67,34 @@ static bool ls_pcie_is_bridge(struct ls_pcie *pcie)
/* Clear multi-function bit */
static void ls_pcie_clear_multifunction(struct ls_pcie *pcie)
{
iowrite8(PCI_HEADER_TYPE_BRIDGE, pcie->pp.dbi_base + PCI_HEADER_TYPE);
struct dw_pcie *pci = pcie->pci;
iowrite8(PCI_HEADER_TYPE_BRIDGE, pci->dbi_base + PCI_HEADER_TYPE);
}
/* Fix class value */
static void ls_pcie_fix_class(struct ls_pcie *pcie)
{
iowrite16(PCI_CLASS_BRIDGE_PCI, pcie->pp.dbi_base + PCI_CLASS_DEVICE);
struct dw_pcie *pci = pcie->pci;
iowrite16(PCI_CLASS_BRIDGE_PCI, pci->dbi_base + PCI_CLASS_DEVICE);
}
/* Drop MSG TLP except for Vendor MSG */
static void ls_pcie_drop_msg_tlp(struct ls_pcie *pcie)
{
u32 val;
struct dw_pcie *pci = pcie->pci;
val = ioread32(pcie->pp.dbi_base + PCIE_STRFMR1);
val = ioread32(pci->dbi_base + PCIE_STRFMR1);
val &= 0xDFFFFFFF;
iowrite32(val, pcie->pp.dbi_base + PCIE_STRFMR1);
iowrite32(val, pci->dbi_base + PCIE_STRFMR1);
}
static int ls1021_pcie_link_up(struct pcie_port *pp)
static int ls1021_pcie_link_up(struct dw_pcie *pci)
{
u32 state;
struct ls_pcie *pcie = to_ls_pcie(pp);
struct ls_pcie *pcie = to_ls_pcie(pci);
if (!pcie->scfg)
return 0;
......@@ -103,8 +110,9 @@ static int ls1021_pcie_link_up(struct pcie_port *pp)
static void ls1021_pcie_host_init(struct pcie_port *pp)
{
struct device *dev = pp->dev;
struct ls_pcie *pcie = to_ls_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct ls_pcie *pcie = to_ls_pcie(pci);
struct device *dev = pci->dev;
u32 index[2];
pcie->scfg = syscon_regmap_lookup_by_phandle(dev->of_node,
......@@ -127,9 +135,9 @@ static void ls1021_pcie_host_init(struct pcie_port *pp)
ls_pcie_drop_msg_tlp(pcie);
}
static int ls_pcie_link_up(struct pcie_port *pp)
static int ls_pcie_link_up(struct dw_pcie *pci)
{
struct ls_pcie *pcie = to_ls_pcie(pp);
struct ls_pcie *pcie = to_ls_pcie(pci);
u32 state;
state = (ioread32(pcie->lut + pcie->drvdata->lut_dbg) >>
......@@ -144,19 +152,21 @@ static int ls_pcie_link_up(struct pcie_port *pp)
static void ls_pcie_host_init(struct pcie_port *pp)
{
struct ls_pcie *pcie = to_ls_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct ls_pcie *pcie = to_ls_pcie(pci);
iowrite32(1, pcie->pp.dbi_base + PCIE_DBI_RO_WR_EN);
iowrite32(1, pci->dbi_base + PCIE_DBI_RO_WR_EN);
ls_pcie_fix_class(pcie);
ls_pcie_clear_multifunction(pcie);
ls_pcie_drop_msg_tlp(pcie);
iowrite32(0, pcie->pp.dbi_base + PCIE_DBI_RO_WR_EN);
iowrite32(0, pci->dbi_base + PCIE_DBI_RO_WR_EN);
}
static int ls_pcie_msi_host_init(struct pcie_port *pp,
struct msi_controller *chip)
{
struct device *dev = pp->dev;
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct device *dev = pci->dev;
struct device_node *np = dev->of_node;
struct device_node *msi_node;
......@@ -175,20 +185,27 @@ static int ls_pcie_msi_host_init(struct pcie_port *pp,
return 0;
}
static struct pcie_host_ops ls1021_pcie_host_ops = {
.link_up = ls1021_pcie_link_up,
static struct dw_pcie_host_ops ls1021_pcie_host_ops = {
.host_init = ls1021_pcie_host_init,
.msi_host_init = ls_pcie_msi_host_init,
};
static struct pcie_host_ops ls_pcie_host_ops = {
.link_up = ls_pcie_link_up,
static struct dw_pcie_host_ops ls_pcie_host_ops = {
.host_init = ls_pcie_host_init,
.msi_host_init = ls_pcie_msi_host_init,
};
static const struct dw_pcie_ops dw_ls1021_pcie_ops = {
.link_up = ls1021_pcie_link_up,
};
static const struct dw_pcie_ops dw_ls_pcie_ops = {
.link_up = ls_pcie_link_up,
};
static struct ls_pcie_drvdata ls1021_drvdata = {
.ops = &ls1021_pcie_host_ops,
.dw_pcie_ops = &dw_ls1021_pcie_ops,
};
static struct ls_pcie_drvdata ls1043_drvdata = {
......@@ -196,6 +213,7 @@ static struct ls_pcie_drvdata ls1043_drvdata = {
.ltssm_shift = 24,
.lut_dbg = 0x7fc,
.ops = &ls_pcie_host_ops,
.dw_pcie_ops = &dw_ls_pcie_ops,
};
static struct ls_pcie_drvdata ls1046_drvdata = {
......@@ -203,6 +221,7 @@ static struct ls_pcie_drvdata ls1046_drvdata = {
.ltssm_shift = 24,
.lut_dbg = 0x407fc,
.ops = &ls_pcie_host_ops,
.dw_pcie_ops = &dw_ls_pcie_ops,
};
static struct ls_pcie_drvdata ls2080_drvdata = {
......@@ -210,6 +229,7 @@ static struct ls_pcie_drvdata ls2080_drvdata = {
.ltssm_shift = 0,
.lut_dbg = 0x7fc,
.ops = &ls_pcie_host_ops,
.dw_pcie_ops = &dw_ls_pcie_ops,
};
static const struct of_device_id ls_pcie_of_match[] = {
......@@ -223,10 +243,13 @@ static const struct of_device_id ls_pcie_of_match[] = {
static int __init ls_add_pcie_port(struct ls_pcie *pcie)
{
struct pcie_port *pp = &pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = pci->dev;
int ret;
pp->ops = pcie->drvdata->ops;
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "failed to initialize host\n");
......@@ -239,35 +262,36 @@ static int __init ls_add_pcie_port(struct ls_pcie *pcie)
static int __init ls_pcie_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
const struct of_device_id *match;
struct dw_pcie *pci;
struct ls_pcie *pcie;
struct pcie_port *pp;
struct resource *dbi_base;
int ret;
match = of_match_device(ls_pcie_of_match, dev);
if (!match)
return -ENODEV;
pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
if (!pcie)
return -ENOMEM;
pp = &pcie->pp;
pp->dev = dev;
pcie->drvdata = match->data;
pp->ops = pcie->drvdata->ops;
pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
if (!pci)
return -ENOMEM;
pcie->drvdata = of_device_get_match_data(dev);
pci->dev = dev;
pci->ops = pcie->drvdata->dw_pcie_ops;
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))
return PTR_ERR(pcie->pp.dbi_base);
pci->dbi_base = devm_ioremap_resource(dev, dbi_base);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);
pcie->lut = pcie->pp.dbi_base + pcie->drvdata->lut_offset;
pcie->lut = pci->dbi_base + pcie->drvdata->lut_offset;
if (!ls_pcie_is_bridge(pcie))
return -ENODEV;
platform_set_drvdata(pdev, pcie);
ret = ls_add_pcie_port(pcie);
if (ret < 0)
return ret;
......
drivers/pci/host/pcie-armada8k.c → drivers/pci/dwc/pcie-armada8k.c
View file @ 60e8d3e1
......@@ -29,7 +29,7 @@
#include "pcie-designware.h"
struct armada8k_pcie {
struct pcie_port pp; /* pp.dbi_base is DT ctrl */
struct dw_pcie *pci;
struct clk *clk;
};
......@@ -67,76 +67,77 @@ struct armada8k_pcie {
#define AX_USER_DOMAIN_MASK 0x3
#define AX_USER_DOMAIN_SHIFT 4
#define to_armada8k_pcie(x) container_of(x, struct armada8k_pcie, pp)
#define to_armada8k_pcie(x) dev_get_drvdata((x)->dev)
static int armada8k_pcie_link_up(struct pcie_port *pp)
static int armada8k_pcie_link_up(struct dw_pcie *pci)
{
u32 reg;
u32 mask = PCIE_GLB_STS_RDLH_LINK_UP | PCIE_GLB_STS_PHY_LINK_UP;
reg = dw_pcie_readl_rc(pp, PCIE_GLOBAL_STATUS_REG);
reg = dw_pcie_readl_dbi(pci, PCIE_GLOBAL_STATUS_REG);
if ((reg & mask) == mask)
return 1;
dev_dbg(pp->dev, "No link detected (Global-Status: 0x%08x).\n", reg);
dev_dbg(pci->dev, "No link detected (Global-Status: 0x%08x).\n", reg);
return 0;
}
static void armada8k_pcie_establish_link(struct armada8k_pcie *pcie)
{
struct pcie_port *pp = &pcie->pp;
struct dw_pcie *pci = pcie->pci;
u32 reg;
if (!dw_pcie_link_up(pp)) {
if (!dw_pcie_link_up(pci)) {
/* Disable LTSSM state machine to enable configuration */
reg = dw_pcie_readl_rc(pp, PCIE_GLOBAL_CONTROL_REG);
reg = dw_pcie_readl_dbi(pci, PCIE_GLOBAL_CONTROL_REG);
reg &= ~(PCIE_APP_LTSSM_EN);
dw_pcie_writel_rc(pp, PCIE_GLOBAL_CONTROL_REG, reg);
dw_pcie_writel_dbi(pci, PCIE_GLOBAL_CONTROL_REG, reg);
}
/* Set the device to root complex mode */
reg = dw_pcie_readl_rc(pp, PCIE_GLOBAL_CONTROL_REG);
reg = dw_pcie_readl_dbi(pci, PCIE_GLOBAL_CONTROL_REG);
reg &= ~(PCIE_DEVICE_TYPE_MASK << PCIE_DEVICE_TYPE_SHIFT);
reg |= PCIE_DEVICE_TYPE_RC << PCIE_DEVICE_TYPE_SHIFT;
dw_pcie_writel_rc(pp, PCIE_GLOBAL_CONTROL_REG, reg);
dw_pcie_writel_dbi(pci, PCIE_GLOBAL_CONTROL_REG, reg);
/* Set the PCIe master AxCache attributes */
dw_pcie_writel_rc(pp, PCIE_ARCACHE_TRC_REG, ARCACHE_DEFAULT_VALUE);
dw_pcie_writel_rc(pp, PCIE_AWCACHE_TRC_REG, AWCACHE_DEFAULT_VALUE);
dw_pcie_writel_dbi(pci, PCIE_ARCACHE_TRC_REG, ARCACHE_DEFAULT_VALUE);
dw_pcie_writel_dbi(pci, PCIE_AWCACHE_TRC_REG, AWCACHE_DEFAULT_VALUE);
/* Set the PCIe master AxDomain attributes */
reg = dw_pcie_readl_rc(pp, PCIE_ARUSER_REG);
reg = dw_pcie_readl_dbi(pci, PCIE_ARUSER_REG);
reg &= ~(AX_USER_DOMAIN_MASK << AX_USER_DOMAIN_SHIFT);
reg |= DOMAIN_OUTER_SHAREABLE << AX_USER_DOMAIN_SHIFT;
dw_pcie_writel_rc(pp, PCIE_ARUSER_REG, reg);
dw_pcie_writel_dbi(pci, PCIE_ARUSER_REG, reg);
reg = dw_pcie_readl_rc(pp, PCIE_AWUSER_REG);
reg = dw_pcie_readl_dbi(pci, PCIE_AWUSER_REG);
reg &= ~(AX_USER_DOMAIN_MASK << AX_USER_DOMAIN_SHIFT);
reg |= DOMAIN_OUTER_SHAREABLE << AX_USER_DOMAIN_SHIFT;
dw_pcie_writel_rc(pp, PCIE_AWUSER_REG, reg);
dw_pcie_writel_dbi(pci, PCIE_AWUSER_REG, reg);
/* Enable INT A-D interrupts */
reg = dw_pcie_readl_rc(pp, PCIE_GLOBAL_INT_MASK1_REG);
reg = dw_pcie_readl_dbi(pci, PCIE_GLOBAL_INT_MASK1_REG);
reg |= PCIE_INT_A_ASSERT_MASK | PCIE_INT_B_ASSERT_MASK |
PCIE_INT_C_ASSERT_MASK | PCIE_INT_D_ASSERT_MASK;
dw_pcie_writel_rc(pp, PCIE_GLOBAL_INT_MASK1_REG, reg);
dw_pcie_writel_dbi(pci, PCIE_GLOBAL_INT_MASK1_REG, reg);
if (!dw_pcie_link_up(pp)) {
if (!dw_pcie_link_up(pci)) {
/* Configuration done. Start LTSSM */
reg = dw_pcie_readl_rc(pp, PCIE_GLOBAL_CONTROL_REG);
reg = dw_pcie_readl_dbi(pci, PCIE_GLOBAL_CONTROL_REG);
reg |= PCIE_APP_LTSSM_EN;
dw_pcie_writel_rc(pp, PCIE_GLOBAL_CONTROL_REG, reg);
dw_pcie_writel_dbi(pci, PCIE_GLOBAL_CONTROL_REG, reg);
}
/* Wait until the link becomes active again */
if (dw_pcie_wait_for_link(pp))
dev_err(pp->dev, "Link not up after reconfiguration\n");
if (dw_pcie_wait_for_link(pci))
dev_err(pci->dev, "Link not up after reconfiguration\n");
}
static void armada8k_pcie_host_init(struct pcie_port *pp)
{
struct armada8k_pcie *pcie = to_armada8k_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct armada8k_pcie *pcie = to_armada8k_pcie(pci);
dw_pcie_setup_rc(pp);
armada8k_pcie_establish_link(pcie);
......@@ -145,7 +146,7 @@ static void armada8k_pcie_host_init(struct pcie_port *pp)
static irqreturn_t armada8k_pcie_irq_handler(int irq, void *arg)
{
struct armada8k_pcie *pcie = arg;
struct pcie_port *pp = &pcie->pp;
struct dw_pcie *pci = pcie->pci;
u32 val;
/*
......@@ -153,21 +154,21 @@ static irqreturn_t armada8k_pcie_irq_handler(int irq, void *arg)
* PCI device. However, they are also latched into the PCIe
* controller, so we simply discard them.
*/
val = dw_pcie_readl_rc(pp, PCIE_GLOBAL_INT_CAUSE1_REG);
dw_pcie_writel_rc(pp, PCIE_GLOBAL_INT_CAUSE1_REG, val);
val = dw_pcie_readl_dbi(pci, PCIE_GLOBAL_INT_CAUSE1_REG);
dw_pcie_writel_dbi(pci, PCIE_GLOBAL_INT_CAUSE1_REG, val);
return IRQ_HANDLED;
}
static struct pcie_host_ops armada8k_pcie_host_ops = {
.link_up = armada8k_pcie_link_up,
static struct dw_pcie_host_ops armada8k_pcie_host_ops = {
.host_init = armada8k_pcie_host_init,
};
static int armada8k_add_pcie_port(struct armada8k_pcie *pcie,
struct platform_device *pdev)
{
struct pcie_port *pp = &pcie->pp;
struct dw_pcie *pci = pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = &pdev->dev;
int ret;
......@@ -196,10 +197,14 @@ static int armada8k_add_pcie_port(struct armada8k_pcie *pcie,
return 0;
}
static const struct dw_pcie_ops dw_pcie_ops = {
.link_up = armada8k_pcie_link_up,
};
static int armada8k_pcie_probe(struct platform_device *pdev)
{
struct dw_pcie *pci;
struct armada8k_pcie *pcie;
struct pcie_port *pp;
struct device *dev = &pdev->dev;
struct resource *base;
int ret;
......@@ -208,24 +213,30 @@ static int armada8k_pcie_probe(struct platform_device *pdev)
if (!pcie)
return -ENOMEM;
pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
if (!pci)
return -ENOMEM;
pci->dev = dev;
pci->ops = &dw_pcie_ops;
pcie->clk = devm_clk_get(dev, NULL);
if (IS_ERR(pcie->clk))
return PTR_ERR(pcie->clk);
clk_prepare_enable(pcie->clk);
pp = &pcie->pp;
pp->dev = dev;
/* Get the dw-pcie unit configuration/control registers base. */
base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl");
pp->dbi_base = devm_ioremap_resource(dev, base);
if (IS_ERR(pp->dbi_base)) {
pci->dbi_base = devm_ioremap_resource(dev, base);
if (IS_ERR(pci->dbi_base)) {
dev_err(dev, "couldn't remap regs base %p\n", base);
ret = PTR_ERR(pp->dbi_base);
ret = PTR_ERR(pci->dbi_base);
goto fail;
}
platform_set_drvdata(pdev, pcie);
ret = armada8k_add_pcie_port(pcie, pdev);
if (ret)
goto fail;
......
drivers/pci/host/pcie-artpec6.c → drivers/pci/dwc/pcie-artpec6.c
View file @ 60e8d3e1
......@@ -24,10 +24,10 @@
#include "pcie-designware.h"
#define to_artpec6_pcie(x) container_of(x, struct artpec6_pcie, pp)
#define to_artpec6_pcie(x) dev_get_drvdata((x)->dev)
struct artpec6_pcie {
struct pcie_port pp; /* pp.dbi_base is DT dbi */
struct dw_pcie *pci;
struct regmap *regmap; /* DT axis,syscon-pcie */
void __iomem *phy_base; /* DT phy */
};
......@@ -80,7 +80,8 @@ static void artpec6_pcie_writel(struct artpec6_pcie *artpec6_pcie, u32 offset, u
static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie)
{
struct pcie_port *pp = &artpec6_pcie->pp;
struct dw_pcie *pci = artpec6_pcie->pci;
struct pcie_port *pp = &pci->pp;
u32 val;
unsigned int retries;
......@@ -139,7 +140,7 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie)
* Enable writing to config regs. This is required as the Synopsys
* driver changes the class code. That register needs DBI write enable.
*/
dw_pcie_writel_rc(pp, MISC_CONTROL_1_OFF, DBI_RO_WR_EN);
dw_pcie_writel_dbi(pci, MISC_CONTROL_1_OFF, DBI_RO_WR_EN);
pp->io_base &= ARTPEC6_CPU_TO_BUS_ADDR;
pp->mem_base &= ARTPEC6_CPU_TO_BUS_ADDR;
......@@ -155,19 +156,20 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie)
artpec6_pcie_writel(artpec6_pcie, PCIECFG, val);
/* check if the link is up or not */
if (!dw_pcie_wait_for_link(pp))
if (!dw_pcie_wait_for_link(pci))
return 0;
dev_dbg(pp->dev, "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n",
dw_pcie_readl_rc(pp, PCIE_PHY_DEBUG_R0),
dw_pcie_readl_rc(pp, PCIE_PHY_DEBUG_R1));
dev_dbg(pci->dev, "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n",
dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R0),
dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R1));
return -ETIMEDOUT;
}
static void artpec6_pcie_enable_interrupts(struct artpec6_pcie *artpec6_pcie)
{
struct pcie_port *pp = &artpec6_pcie->pp;
struct dw_pcie *pci = artpec6_pcie->pci;
struct pcie_port *pp = &pci->pp;
if (IS_ENABLED(CONFIG_PCI_MSI))
dw_pcie_msi_init(pp);
......@@ -175,20 +177,22 @@ static void artpec6_pcie_enable_interrupts(struct artpec6_pcie *artpec6_pcie)
static void artpec6_pcie_host_init(struct pcie_port *pp)
{
struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pp);
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pci);
artpec6_pcie_establish_link(artpec6_pcie);
artpec6_pcie_enable_interrupts(artpec6_pcie);
}
static struct pcie_host_ops artpec6_pcie_host_ops = {
static struct dw_pcie_host_ops artpec6_pcie_host_ops = {
.host_init = artpec6_pcie_host_init,
};
static irqreturn_t artpec6_pcie_msi_handler(int irq, void *arg)
{
struct artpec6_pcie *artpec6_pcie = arg;
struct pcie_port *pp = &artpec6_pcie->pp;
struct dw_pcie *pci = artpec6_pcie->pci;
struct pcie_port *pp = &pci->pp;
return dw_handle_msi_irq(pp);
}
......@@ -196,8 +200,9 @@ static irqreturn_t artpec6_pcie_msi_handler(int irq, void *arg)
static int artpec6_add_pcie_port(struct artpec6_pcie *artpec6_pcie,
struct platform_device *pdev)
{
struct pcie_port *pp = &artpec6_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = artpec6_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = pci->dev;
int ret;
if (IS_ENABLED(CONFIG_PCI_MSI)) {
......@@ -232,8 +237,8 @@ static int artpec6_add_pcie_port(struct artpec6_pcie *artpec6_pcie,
static int artpec6_pcie_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct dw_pcie *pci;
struct artpec6_pcie *artpec6_pcie;
struct pcie_port *pp;
struct resource *dbi_base;
struct resource *phy_base;
int ret;
......@@ -242,13 +247,16 @@ static int artpec6_pcie_probe(struct platform_device *pdev)
if (!artpec6_pcie)
return -ENOMEM;
pp = &artpec6_pcie->pp;
pp->dev = dev;
pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
if (!pci)
return -ENOMEM;
pci->dev = dev;
dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
pp->dbi_base = devm_ioremap_resource(dev, dbi_base);
if (IS_ERR(pp->dbi_base))
return PTR_ERR(pp->dbi_base);
pci->dbi_base = devm_ioremap_resource(dev, dbi_base);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);
phy_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
artpec6_pcie->phy_base = devm_ioremap_resource(dev, phy_base);
......@@ -261,6 +269,8 @@ static int artpec6_pcie_probe(struct platform_device *pdev)
if (IS_ERR(artpec6_pcie->regmap))
return PTR_ERR(artpec6_pcie->regmap);
platform_set_drvdata(pdev, artpec6_pcie);
ret = artpec6_add_pcie_port(artpec6_pcie, pdev);
if (ret < 0)
return ret;
......
drivers/pci/host/pcie-designware-plat.c → drivers/pci/dwc/pcie-designware-plat.c
View file @ 60e8d3e1
......@@ -25,7 +25,7 @@
#include "pcie-designware.h"
struct dw_plat_pcie {
struct pcie_port pp; /* pp.dbi_base is DT 0th resource */
struct dw_pcie *pci;
};
static irqreturn_t dw_plat_pcie_msi_irq_handler(int irq, void *arg)
......@@ -37,21 +37,23 @@ static irqreturn_t dw_plat_pcie_msi_irq_handler(int irq, void *arg)
static void dw_plat_pcie_host_init(struct pcie_port *pp)
{
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
dw_pcie_setup_rc(pp);
dw_pcie_wait_for_link(pp);
dw_pcie_wait_for_link(pci);
if (IS_ENABLED(CONFIG_PCI_MSI))
dw_pcie_msi_init(pp);
}
static struct pcie_host_ops dw_plat_pcie_host_ops = {
static struct dw_pcie_host_ops dw_plat_pcie_host_ops = {
.host_init = dw_plat_pcie_host_init,
};
static int dw_plat_add_pcie_port(struct pcie_port *pp,
struct platform_device *pdev)
{
struct device *dev = pp->dev;
struct device *dev = &pdev->dev;
int ret;
pp->irq = platform_get_irq(pdev, 1);
......@@ -88,7 +90,7 @@ static int dw_plat_pcie_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct dw_plat_pcie *dw_plat_pcie;
struct pcie_port *pp;
struct dw_pcie *pci;
struct resource *res; /* Resource from DT */
int ret;
......@@ -96,15 +98,20 @@ static int dw_plat_pcie_probe(struct platform_device *pdev)
if (!dw_plat_pcie)
return -ENOMEM;
pp = &dw_plat_pcie->pp;
pp->dev = dev;
pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
if (!pci)
return -ENOMEM;
pci->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pp->dbi_base = devm_ioremap_resource(dev, res);
if (IS_ERR(pp->dbi_base))
return PTR_ERR(pp->dbi_base);
pci->dbi_base = devm_ioremap_resource(dev, res);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);
platform_set_drvdata(pdev, dw_plat_pcie);
ret = dw_plat_add_pcie_port(pp, pdev);
ret = dw_plat_add_pcie_port(&pci->pp, pdev);
if (ret < 0)
return ret;
......
drivers/pci/dwc/pcie-designware.c 0 → 100644
View file @ 60e8d3e1
/*
* Synopsys Designware PCIe host controller driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Author: Jingoo Han <jg1.han@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/types.h>
#include "pcie-designware.h"
/* PCIe Port Logic registers */
#define PLR_OFFSET 0x700
#define PCIE_PHY_DEBUG_R1 (PLR_OFFSET + 0x2c)
#define PCIE_PHY_DEBUG_R1_LINK_UP (0x1 << 4)
#define PCIE_PHY_DEBUG_R1_LINK_IN_TRAINING (0x1 << 29)
int dw_pcie_read(void __iomem *addr, int size, u32 *val)
{
if ((uintptr_t)addr & (size - 1)) {
*val = 0;
return PCIBIOS_BAD_REGISTER_NUMBER;
}
if (size == 4) {
*val = readl(addr);
} else if (size == 2) {
*val = readw(addr);
} else if (size == 1) {
*val = readb(addr);
} else {
*val = 0;
return PCIBIOS_BAD_REGISTER_NUMBER;
}
return PCIBIOS_SUCCESSFUL;
}
int dw_pcie_write(void __iomem *addr, int size, u32 val)
{
if ((uintptr_t)addr & (size - 1))
return PCIBIOS_BAD_REGISTER_NUMBER;
if (size == 4)
writel(val, addr);
else if (size == 2)
writew(val, addr);
else if (size == 1)
writeb(val, addr);
else
return PCIBIOS_BAD_REGISTER_NUMBER;
return PCIBIOS_SUCCESSFUL;
}
u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg)
{
if (pci->ops->readl_dbi)
return pci->ops->readl_dbi(pci, reg);
return readl(pci->dbi_base + reg);
}
void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
{
if (pci->ops->writel_dbi)
pci->ops->writel_dbi(pci, reg, val);
else
writel(val, pci->dbi_base + reg);
}
static u32 dw_pcie_readl_unroll(struct dw_pcie *pci, u32 index, u32 reg)
{
u32 offset = PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(index);
return dw_pcie_readl_dbi(pci, offset + reg);
}
static void dw_pcie_writel_unroll(struct dw_pcie *pci, u32 index, u32 reg,
u32 val)
{
u32 offset = PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(index);
dw_pcie_writel_dbi(pci, offset + reg, val);
}
void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
u64 cpu_addr, u64 pci_addr, u32 size)
{
u32 retries, val;
if (pci->iatu_unroll_enabled) {
dw_pcie_writel_unroll(pci, index, PCIE_ATU_UNR_LOWER_BASE,
lower_32_bits(cpu_addr));
dw_pcie_writel_unroll(pci, index, PCIE_ATU_UNR_UPPER_BASE,
upper_32_bits(cpu_addr));
dw_pcie_writel_unroll(pci, index, PCIE_ATU_UNR_LIMIT,
lower_32_bits(cpu_addr + size - 1));
dw_pcie_writel_unroll(pci, index, PCIE_ATU_UNR_LOWER_TARGET,
lower_32_bits(pci_addr));
dw_pcie_writel_unroll(pci, index, PCIE_ATU_UNR_UPPER_TARGET,
upper_32_bits(pci_addr));
dw_pcie_writel_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL1,
type);
dw_pcie_writel_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL2,
PCIE_ATU_ENABLE);
} else {
dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT,
PCIE_ATU_REGION_OUTBOUND | index);
dw_pcie_writel_dbi(pci, PCIE_ATU_LOWER_BASE,
lower_32_bits(cpu_addr));
dw_pcie_writel_dbi(pci, PCIE_ATU_UPPER_BASE,
upper_32_bits(cpu_addr));
dw_pcie_writel_dbi(pci, PCIE_ATU_LIMIT,
lower_32_bits(cpu_addr + size - 1));
dw_pcie_writel_dbi(pci, PCIE_ATU_LOWER_TARGET,
lower_32_bits(pci_addr));
dw_pcie_writel_dbi(pci, PCIE_ATU_UPPER_TARGET,
upper_32_bits(pci_addr));
dw_pcie_writel_dbi(pci, PCIE_ATU_CR1, type);
dw_pcie_writel_dbi(pci, PCIE_ATU_CR2, PCIE_ATU_ENABLE);
}
/*
* Make sure ATU enable takes effect before any subsequent config
* and I/O accesses.
*/
for (retries = 0; retries < LINK_WAIT_MAX_IATU_RETRIES; retries++) {
if (pci->iatu_unroll_enabled)
val = dw_pcie_readl_unroll(pci, index,
PCIE_ATU_UNR_REGION_CTRL2);
else
val = dw_pcie_readl_dbi(pci, PCIE_ATU_CR2);
if (val == PCIE_ATU_ENABLE)
return;
usleep_range(LINK_WAIT_IATU_MIN, LINK_WAIT_IATU_MAX);
}
dev_err(pci->dev, "iATU is not being enabled\n");
}
int dw_pcie_wait_for_link(struct dw_pcie *pci)
{
int retries;
/* check if the link is up or not */
for (retries = 0; retries < LINK_WAIT_MAX_RETRIES; retries++) {
if (dw_pcie_link_up(pci)) {
dev_info(pci->dev, "link up\n");
return 0;
}
usleep_range(LINK_WAIT_USLEEP_MIN, LINK_WAIT_USLEEP_MAX);
}
dev_err(pci->dev, "phy link never came up\n");
return -ETIMEDOUT;
}
int dw_pcie_link_up(struct dw_pcie *pci)
{
u32 val;
if (pci->ops->link_up)
return pci->ops->link_up(pci);
val = readl(pci->dbi_base + PCIE_PHY_DEBUG_R1);
return ((val & PCIE_PHY_DEBUG_R1_LINK_UP) &&
(!(val & PCIE_PHY_DEBUG_R1_LINK_IN_TRAINING)));
}
void dw_pcie_setup(struct dw_pcie *pci)
{
int ret;
u32 val;
u32 lanes;
struct device *dev = pci->dev;
struct device_node *np = dev->of_node;
ret = of_property_read_u32(np, "num-lanes", &lanes);
if (ret)
lanes = 0;
/* set the number of lanes */
val = dw_pcie_readl_dbi(pci, PCIE_PORT_LINK_CONTROL);
val &= ~PORT_LINK_MODE_MASK;
switch (lanes) {
case 1:
val |= PORT_LINK_MODE_1_LANES;
break;
case 2:
val |= PORT_LINK_MODE_2_LANES;
break;
case 4:
val |= PORT_LINK_MODE_4_LANES;
break;
case 8:
val |= PORT_LINK_MODE_8_LANES;
break;
default:
dev_err(pci->dev, "num-lanes %u: invalid value\n", lanes);
return;
}
dw_pcie_writel_dbi(pci, PCIE_PORT_LINK_CONTROL, val);
/* set link width speed control register */
val = dw_pcie_readl_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL);
val &= ~PORT_LOGIC_LINK_WIDTH_MASK;
switch (lanes) {
case 1:
val |= PORT_LOGIC_LINK_WIDTH_1_LANES;
break;
case 2:
val |= PORT_LOGIC_LINK_WIDTH_2_LANES;
break;
case 4:
val |= PORT_LOGIC_LINK_WIDTH_4_LANES;
break;
case 8:
val |= PORT_LOGIC_LINK_WIDTH_8_LANES;
break;
}
dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, val);
}
drivers/pci/host/pcie-designware.h → drivers/pci/dwc/pcie-designware.h
View file @ 60e8d3e1
......@@ -14,6 +14,81 @@
#ifndef _PCIE_DESIGNWARE_H
#define _PCIE_DESIGNWARE_H
#include <linux/irq.h>
#include <linux/msi.h>
#include <linux/pci.h>
/* Parameters for the waiting for link up routine */
#define LINK_WAIT_MAX_RETRIES 10
#define LINK_WAIT_USLEEP_MIN 90000
#define LINK_WAIT_USLEEP_MAX 100000
/* Parameters for the waiting for iATU enabled routine */
#define LINK_WAIT_MAX_IATU_RETRIES 5
#define LINK_WAIT_IATU_MIN 9000
#define LINK_WAIT_IATU_MAX 10000
/* Synopsys-specific PCIe configuration registers */
#define PCIE_PORT_LINK_CONTROL 0x710
#define PORT_LINK_MODE_MASK (0x3f << 16)
#define PORT_LINK_MODE_1_LANES (0x1 << 16)
#define PORT_LINK_MODE_2_LANES (0x3 << 16)
#define PORT_LINK_MODE_4_LANES (0x7 << 16)
#define PORT_LINK_MODE_8_LANES (0xf << 16)
#define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C
#define PORT_LOGIC_SPEED_CHANGE (0x1 << 17)
#define PORT_LOGIC_LINK_WIDTH_MASK (0x1f << 8)
#define PORT_LOGIC_LINK_WIDTH_1_LANES (0x1 << 8)
#define PORT_LOGIC_LINK_WIDTH_2_LANES (0x2 << 8)
#define PORT_LOGIC_LINK_WIDTH_4_LANES (0x4 << 8)
#define PORT_LOGIC_LINK_WIDTH_8_LANES (0x8 << 8)
#define PCIE_MSI_ADDR_LO 0x820
#define PCIE_MSI_ADDR_HI 0x824
#define PCIE_MSI_INTR0_ENABLE 0x828
#define PCIE_MSI_INTR0_MASK 0x82C
#define PCIE_MSI_INTR0_STATUS 0x830
#define PCIE_ATU_VIEWPORT 0x900
#define PCIE_ATU_REGION_INBOUND (0x1 << 31)
#define PCIE_ATU_REGION_OUTBOUND (0x0 << 31)
#define PCIE_ATU_REGION_INDEX2 (0x2 << 0)
#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
#define PCIE_ATU_REGION_INDEX0 (0x0 << 0)
#define PCIE_ATU_CR1 0x904
#define PCIE_ATU_TYPE_MEM (0x0 << 0)
#define PCIE_ATU_TYPE_IO (0x2 << 0)
#define PCIE_ATU_TYPE_CFG0 (0x4 << 0)
#define PCIE_ATU_TYPE_CFG1 (0x5 << 0)
#define PCIE_ATU_CR2 0x908
#define PCIE_ATU_ENABLE (0x1 << 31)
#define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30)
#define PCIE_ATU_LOWER_BASE 0x90C
#define PCIE_ATU_UPPER_BASE 0x910
#define PCIE_ATU_LIMIT 0x914
#define PCIE_ATU_LOWER_TARGET 0x918
#define PCIE_ATU_BUS(x) (((x) & 0xff) << 24)
#define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19)
#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
#define PCIE_ATU_UPPER_TARGET 0x91C
/*
* iATU Unroll-specific register definitions
* From 4.80 core version the address translation will be made by unroll
*/
#define PCIE_ATU_UNR_REGION_CTRL1 0x00
#define PCIE_ATU_UNR_REGION_CTRL2 0x04
#define PCIE_ATU_UNR_LOWER_BASE 0x08
#define PCIE_ATU_UNR_UPPER_BASE 0x0C
#define PCIE_ATU_UNR_LIMIT 0x10
#define PCIE_ATU_UNR_LOWER_TARGET 0x14
#define PCIE_ATU_UNR_UPPER_TARGET 0x18
/* Register address builder */
#define PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(region) \
((0x3 << 20) | ((region) << 9))
/*
* Maximum number of MSI IRQs can be 256 per controller. But keep
* it 32 as of now. Probably we will never need more than 32. If needed,
......@@ -22,10 +97,27 @@
#define MAX_MSI_IRQS 32
#define MAX_MSI_CTRLS (MAX_MSI_IRQS / 32)
struct pcie_port;
struct dw_pcie;
struct dw_pcie_host_ops {
int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val);
int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 val);
void (*host_init)(struct pcie_port *pp);
void (*msi_set_irq)(struct pcie_port *pp, int irq);
void (*msi_clear_irq)(struct pcie_port *pp, int irq);
phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
u32 (*get_msi_data)(struct pcie_port *pp, int pos);
void (*scan_bus)(struct pcie_port *pp);
int (*msi_host_init)(struct pcie_port *pp, struct msi_controller *chip);
};
struct pcie_port {
struct device *dev;
u8 root_bus_nr;
void __iomem *dbi_base;
u64 cfg0_base;
void __iomem *va_cfg0_base;
u32 cfg0_size;
......@@ -43,44 +135,64 @@ struct pcie_port {
struct resource *mem;
struct resource *busn;
int irq;
u32 lanes;
u32 num_viewport;
struct pcie_host_ops *ops;
struct dw_pcie_host_ops *ops;
int msi_irq;
struct irq_domain *irq_domain;
unsigned long msi_data;
u8 iatu_unroll_enabled;
DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
};
struct pcie_host_ops {
u32 (*readl_rc)(struct pcie_port *pp, u32 reg);
void (*writel_rc)(struct pcie_port *pp, u32 reg, u32 val);
int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val);
int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 val);
int (*link_up)(struct pcie_port *pp);
void (*host_init)(struct pcie_port *pp);
void (*msi_set_irq)(struct pcie_port *pp, int irq);
void (*msi_clear_irq)(struct pcie_port *pp, int irq);
phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
u32 (*get_msi_data)(struct pcie_port *pp, int pos);
void (*scan_bus)(struct pcie_port *pp);
int (*msi_host_init)(struct pcie_port *pp, struct msi_controller *chip);
struct dw_pcie_ops {
u32 (*readl_dbi)(struct dw_pcie *pcie, u32 reg);
void (*writel_dbi)(struct dw_pcie *pcie, u32 reg, u32 val);
int (*link_up)(struct dw_pcie *pcie);
};
u32 dw_pcie_readl_rc(struct pcie_port *pp, u32 reg);
void dw_pcie_writel_rc(struct pcie_port *pp, u32 reg, u32 val);
int dw_pcie_cfg_read(void __iomem *addr, int size, u32 *val);
int dw_pcie_cfg_write(void __iomem *addr, int size, u32 val);
struct dw_pcie {
struct device *dev;
void __iomem *dbi_base;
u32 num_viewport;
u8 iatu_unroll_enabled;
struct pcie_port pp;
const struct dw_pcie_ops *ops;
};
#define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
int dw_pcie_read(void __iomem *addr, int size, u32 *val);
int dw_pcie_write(void __iomem *addr, int size, u32 val);
u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg);
void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val);
int dw_pcie_link_up(struct dw_pcie *pci);
int dw_pcie_wait_for_link(struct dw_pcie *pci);
void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index,
int type, u64 cpu_addr, u64 pci_addr,
u32 size);
void dw_pcie_setup(struct dw_pcie *pci);
#ifdef CONFIG_PCIE_DW_HOST
irqreturn_t dw_handle_msi_irq(struct pcie_port *pp);
void dw_pcie_msi_init(struct pcie_port *pp);
int dw_pcie_wait_for_link(struct pcie_port *pp);
int dw_pcie_link_up(struct pcie_port *pp);
void dw_pcie_setup_rc(struct pcie_port *pp);
int dw_pcie_host_init(struct pcie_port *pp);
#else
static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
{
return IRQ_NONE;
}
static inline void dw_pcie_msi_init(struct pcie_port *pp)
{
}
static inline void dw_pcie_setup_rc(struct pcie_port *pp)
{
}
static inline int dw_pcie_host_init(struct pcie_port *pp)
{
return 0;
}
#endif
#endif /* _PCIE_DESIGNWARE_H */
drivers/pci/host/pcie-hisi.c → drivers/pci/dwc/pcie-hisi.c
View file @ 60e8d3e1
......@@ -24,9 +24,9 @@
#include <linux/regmap.h>
#include "../pci.h"
#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
#if defined(CONFIG_PCI_HISI) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
static int hisi_pcie_acpi_rd_conf(struct pci_bus *bus, u32 devfn, int where,
static int hisi_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
int size, u32 *val)
{
struct pci_config_window *cfg = bus->sysdata;
......@@ -44,7 +44,7 @@ static int hisi_pcie_acpi_rd_conf(struct pci_bus *bus, u32 devfn, int where,
return pci_generic_config_read(bus, devfn, where, size, val);
}
static int hisi_pcie_acpi_wr_conf(struct pci_bus *bus, u32 devfn,
static int hisi_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
int where, int size, u32 val)
{
struct pci_config_window *cfg = bus->sysdata;
......@@ -74,6 +74,8 @@ static void __iomem *hisi_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
return pci_ecam_map_bus(bus, devfn, where);
}
#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
static int hisi_pcie_init(struct pci_config_window *cfg)
{
struct device *dev = cfg->parent;
......@@ -110,8 +112,8 @@ struct pci_ecam_ops hisi_pcie_ops = {
.init = hisi_pcie_init,
.pci_ops = {
.map_bus = hisi_pcie_map_bus,
.read = hisi_pcie_acpi_rd_conf,
.write = hisi_pcie_acpi_wr_conf,
.read = hisi_pcie_rd_conf,
.write = hisi_pcie_wr_conf,
}
};
......@@ -127,7 +129,7 @@ struct pci_ecam_ops hisi_pcie_ops = {
#define PCIE_LTSSM_LINKUP_STATE 0x11
#define PCIE_LTSSM_STATE_MASK 0x3F
#define to_hisi_pcie(x) container_of(x, struct hisi_pcie, pp)
#define to_hisi_pcie(x) dev_get_drvdata((x)->dev)
struct hisi_pcie;
......@@ -136,10 +138,10 @@ struct pcie_soc_ops {
};
struct hisi_pcie {
struct pcie_port pp; /* pp.dbi_base is DT rc_dbi */
struct dw_pcie *pci;
struct regmap *subctrl;
u32 port_id;
struct pcie_soc_ops *soc_ops;
const struct pcie_soc_ops *soc_ops;
};
/* HipXX PCIe host only supports 32-bit config access */
......@@ -149,10 +151,11 @@ static int hisi_pcie_cfg_read(struct pcie_port *pp, int where, int size,
u32 reg;
u32 reg_val;
void *walker = &reg_val;
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
walker += (where & 0x3);
reg = where & ~0x3;
reg_val = dw_pcie_readl_rc(pp, reg);
reg_val = dw_pcie_readl_dbi(pci, reg);
if (size == 1)
*val = *(u8 __force *) walker;
......@@ -173,19 +176,20 @@ static int hisi_pcie_cfg_write(struct pcie_port *pp, int where, int size,
u32 reg_val;
u32 reg;
void *walker = &reg_val;
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
walker += (where & 0x3);
reg = where & ~0x3;
if (size == 4)
dw_pcie_writel_rc(pp, reg, val);
dw_pcie_writel_dbi(pci, reg, val);
else if (size == 2) {
reg_val = dw_pcie_readl_rc(pp, reg);
reg_val = dw_pcie_readl_dbi(pci, reg);
*(u16 __force *) walker = val;
dw_pcie_writel_rc(pp, reg, reg_val);
dw_pcie_writel_dbi(pci, reg, reg_val);
} else if (size == 1) {
reg_val = dw_pcie_readl_rc(pp, reg);
reg_val = dw_pcie_readl_dbi(pci, reg);
*(u8 __force *) walker = val;
dw_pcie_writel_rc(pp, reg, reg_val);
dw_pcie_writel_dbi(pci, reg, reg_val);
} else
return PCIBIOS_BAD_REGISTER_NUMBER;
......@@ -204,32 +208,32 @@ static int hisi_pcie_link_up_hip05(struct hisi_pcie *hisi_pcie)
static int hisi_pcie_link_up_hip06(struct hisi_pcie *hisi_pcie)
{
struct pcie_port *pp = &hisi_pcie->pp;
struct dw_pcie *pci = hisi_pcie->pci;
u32 val;
val = dw_pcie_readl_rc(pp, PCIE_SYS_STATE4);
val = dw_pcie_readl_dbi(pci, PCIE_SYS_STATE4);
return ((val & PCIE_LTSSM_STATE_MASK) == PCIE_LTSSM_LINKUP_STATE);
}
static int hisi_pcie_link_up(struct pcie_port *pp)
static int hisi_pcie_link_up(struct dw_pcie *pci)
{
struct hisi_pcie *hisi_pcie = to_hisi_pcie(pp);
struct hisi_pcie *hisi_pcie = to_hisi_pcie(pci);
return hisi_pcie->soc_ops->hisi_pcie_link_up(hisi_pcie);
}
static struct pcie_host_ops hisi_pcie_host_ops = {
static struct dw_pcie_host_ops hisi_pcie_host_ops = {
.rd_own_conf = hisi_pcie_cfg_read,
.wr_own_conf = hisi_pcie_cfg_write,
.link_up = hisi_pcie_link_up,
};
static int hisi_add_pcie_port(struct hisi_pcie *hisi_pcie,
struct platform_device *pdev)
{
struct pcie_port *pp = &hisi_pcie->pp;
struct device *dev = pp->dev;
struct dw_pcie *pci = hisi_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = &pdev->dev;
int ret;
u32 port_id;
......@@ -254,12 +258,15 @@ static int hisi_add_pcie_port(struct hisi_pcie *hisi_pcie,
return 0;
}
static const struct dw_pcie_ops dw_pcie_ops = {
.link_up = hisi_pcie_link_up,
};
static int hisi_pcie_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct dw_pcie *pci;
struct hisi_pcie *hisi_pcie;
struct pcie_port *pp;
const struct of_device_id *match;
struct resource *reg;
struct device_driver *driver;
int ret;
......@@ -268,12 +275,16 @@ static int hisi_pcie_probe(struct platform_device *pdev)
if (!hisi_pcie)
return -ENOMEM;
pp = &hisi_pcie->pp;
pp->dev = dev;
pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
if (!pci)
return -ENOMEM;
pci->dev = dev;
pci->ops = &dw_pcie_ops;
driver = dev->driver;
match = of_match_device(driver->of_match_table, dev);
hisi_pcie->soc_ops = (struct pcie_soc_ops *) match->data;
hisi_pcie->soc_ops = of_device_get_match_data(dev);
hisi_pcie->subctrl =
syscon_regmap_lookup_by_compatible("hisilicon,pcie-sas-subctrl");
......@@ -283,9 +294,11 @@ 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))
return PTR_ERR(pp->dbi_base);
pci->dbi_base = devm_ioremap_resource(dev, reg);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);
platform_set_drvdata(pdev, hisi_pcie);
ret = hisi_add_pcie_port(hisi_pcie, pdev);
if (ret)
......@@ -323,4 +336,62 @@ static struct platform_driver hisi_pcie_driver = {
};
builtin_platform_driver(hisi_pcie_driver);
static int hisi_pcie_almost_ecam_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct pci_ecam_ops *ops;
ops = (struct pci_ecam_ops *)of_device_get_match_data(dev);
return pci_host_common_probe(pdev, ops);
}
static int hisi_pcie_platform_init(struct pci_config_window *cfg)
{
struct device *dev = cfg->parent;
struct platform_device *pdev = to_platform_device(dev);
struct resource *res;
void __iomem *reg_base;
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
dev_err(dev, "missing \"reg[1]\"property\n");
return -EINVAL;
}
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_platform_ops = {
.bus_shift = 20,
.init = hisi_pcie_platform_init,
.pci_ops = {
.map_bus = hisi_pcie_map_bus,
.read = hisi_pcie_rd_conf,
.write = hisi_pcie_wr_conf,
}
};
static const struct of_device_id hisi_pcie_almost_ecam_of_match[] = {
{
.compatible = "hisilicon,pcie-almost-ecam",
.data = (void *) &hisi_pcie_platform_ops,
},
{},
};
static struct platform_driver hisi_pcie_almost_ecam_driver = {
.probe = hisi_pcie_almost_ecam_probe,
.driver = {
.name = "hisi-pcie-almost-ecam",
.of_match_table = hisi_pcie_almost_ecam_of_match,
},
};
builtin_platform_driver(hisi_pcie_almost_ecam_driver);
#endif
#endif
drivers/pci/host/Kconfig
View file @ 60e8d3e1
This diff is collapsed.
drivers/pci/host/Makefile
View file @ 60e8d3e1
obj-$(CONFIG_PCIE_DW) += pcie-designware.o
obj-$(CONFIG_PCIE_DW_PLAT) += pcie-designware-plat.o
obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o
obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o
obj-$(CONFIG_PCI_IMX6) += pci-imx6.o
obj-$(CONFIG_PCI_HYPERV) += pci-hyperv.o
obj-$(CONFIG_PCI_MVEBU) += pci-mvebu.o
obj-$(CONFIG_PCI_AARDVARK) += pci-aardvark.o
......@@ -11,12 +6,9 @@ obj-$(CONFIG_PCI_RCAR_GEN2) += pci-rcar-gen2.o
obj-$(CONFIG_PCIE_RCAR) += pcie-rcar.o
obj-$(CONFIG_PCI_HOST_COMMON) += pci-host-common.o
obj-$(CONFIG_PCI_HOST_GENERIC) += pci-host-generic.o
obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o
obj-$(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-$(CONFIG_PCI_XGENE_MSI) += pci-xgene-msi.o
obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o
obj-$(CONFIG_PCIE_IPROC) += pcie-iproc.o
obj-$(CONFIG_PCIE_IPROC_MSI) += pcie-iproc-msi.o
......@@ -24,9 +16,6 @@ obj-$(CONFIG_PCIE_IPROC_PLATFORM) += pcie-iproc-platform.o
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_PCIE_QCOM) += pcie-qcom.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
......@@ -40,7 +29,6 @@ obj-$(CONFIG_VMD) += vmd.o
# ARM64 and use internal ifdefs to only build the pieces we need
# depending on whether ACPI, the DT driver, or both are enabled.
obj-$(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
drivers/pci/host/pci-host-common.c
View file @ 60e8d3e1
......@@ -145,7 +145,9 @@ int pci_host_common_probe(struct platform_device *pdev,
return -ENODEV;
}
#ifdef CONFIG_ARM
pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci);
#endif
/*
* We insert PCI resources into the iomem_resource and
......
drivers/pci/host/pci-hyperv.c
View file @ 60e8d3e1
......@@ -130,7 +130,8 @@ union pci_version {
*/
union win_slot_encoding {
struct {
u32 func:8;
u32 dev:5;
u32 func:3;
u32 reserved:24;
} bits;
u32 slot;
......@@ -485,7 +486,8 @@ static u32 devfn_to_wslot(int devfn)
union win_slot_encoding wslot;
wslot.slot = 0;
wslot.bits.func = PCI_SLOT(devfn) | (PCI_FUNC(devfn) << 5);
wslot.bits.dev = PCI_SLOT(devfn);
wslot.bits.func = PCI_FUNC(devfn);
return wslot.slot;
}
......@@ -503,7 +505,7 @@ static int wslot_to_devfn(u32 wslot)
union win_slot_encoding slot_no;
slot_no.slot = wslot;
return PCI_DEVFN(0, slot_no.bits.func);
return PCI_DEVFN(slot_no.bits.dev, slot_no.bits.func);
}
/*
......@@ -1315,6 +1317,18 @@ static struct hv_pci_dev *new_pcichild_device(struct hv_pcibus_device *hbus,
get_pcichild(hpdev, hv_pcidev_ref_initial);
get_pcichild(hpdev, hv_pcidev_ref_childlist);
spin_lock_irqsave(&hbus->device_list_lock, flags);
/*
* When a device is being added to the bus, we set the PCI domain
* number to be the device serial number, which is non-zero and
* unique on the same VM. The serial numbers start with 1, and
* increase by 1 for each device. So device names including this
* can have shorter names than based on the bus instance UUID.
* Only the first device serial number is used for domain, so the
* domain number will not change after the first device is added.
*/
if (list_empty(&hbus->children))
hbus->sysdata.domain = desc->ser;
list_add_tail(&hpdev->list_entry, &hbus->children);
spin_unlock_irqrestore(&hbus->device_list_lock, flags);
return hpdev;
......
drivers/pci/host/pci-mvebu.c
View file @ 60e8d3e1
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drivers/pci/host/pci-thunder-pem.c
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drivers/pci/host/pci-versatile.c
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drivers/pci/host/pci-xgene.c
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drivers/pci/host/pcie-altera.c
View file @ 60e8d3e1
......@@ -65,7 +65,7 @@
(((TLP_REQ_ID(pcie->root_bus_nr, RP_DEVFN)) << 16) | (tag << 8) | (be))
#define TLP_CFG_DW2(bus, devfn, offset) \
(((bus) << 24) | ((devfn) << 16) | (offset))
#define TLP_COMP_STATUS(s) (((s) >> 12) & 7)
#define TLP_COMP_STATUS(s) (((s) >> 13) & 7)
#define TLP_HDR_SIZE 3
#define TLP_LOOP 500
......
drivers/pci/host/pcie-iproc-platform.c
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drivers/pci/host/pcie-iproc.c
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drivers/pci/host/pcie-rcar.c
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drivers/pci/host/pcie-rockchip.c
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drivers/pci/host/pcie-xilinx-nwl.c
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drivers/pci/host/pcie-xilinx.c
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drivers/pci/hotplug/acpiphp_ibm.c
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drivers/pci/hotplug/rpadlpar_core.c
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drivers/pci/iov.c
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drivers/pci/msi.c
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drivers/pci/pci-driver.c
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drivers/pci/pci-sysfs.c
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drivers/pci/pci.h
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drivers/pci/pcie/Kconfig
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drivers/pci/pcie/aspm.c
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drivers/pci/pcie/pcie-dpc.c
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drivers/pci/pcie/portdrv_core.c
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drivers/pci/probe.c
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drivers/pci/quirks.c
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drivers/pci/setup-bus.c
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drivers/phy/Kconfig
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drivers/phy/Makefile
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drivers/phy/phy-exynos-pcie.c 0 → 100644
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include/linux/msi.h
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include/linux/pci.h
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include/linux/pci_ids.h
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include/uapi/linux/pci_regs.h
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