Commit Graph

9 Commits

Author SHA1 Message Date
Hou Zhiqiang
863bba34d2 PCI: mobiveil: Fix unmet dependency warning for PCIE_MOBIVEIL_PLAT
Fix the following warning by adding the dependency PCI_MSI_IRQ_DOMAIN
to PCIE_MOBIVEIL_PLAT.

WARNING: unmet direct dependencies detected for PCIE_MOBIVEIL_HOST
  Depends on [n]: PCI [=y] && PCI_MSI_IRQ_DOMAIN [=n]
  Selected by [y]:
  - PCIE_MOBIVEIL_PLAT [=y] && PCI [=y] && (ARCH_ZYNQMP || COMPILE_TEST [=y]) && OF [=y]

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2020-03-18 10:39:52 +00:00
Hou Zhiqiang
92a17e5c79 PCI: mobiveil: Fix sparse different address space warnings
Fix the sparse warnings below:

drivers/pci/controller/mobiveil/pcie-mobiveil.c:44:49: warning: incorrect type in return expression (different address spaces)
drivers/pci/controller/mobiveil/pcie-mobiveil.c:44:49:    expected void *
drivers/pci/controller/mobiveil/pcie-mobiveil.c:44:49:    got void [noderef] <asn:2> *
drivers/pci/controller/mobiveil/pcie-mobiveil.c:48:41: warning: incorrect type in return expression (different address spaces)
drivers/pci/controller/mobiveil/pcie-mobiveil.c:48:41:    expected void *
drivers/pci/controller/mobiveil/pcie-mobiveil.c:48:41:    got void [noderef] <asn:2> *
drivers/pci/controller/mobiveil/pcie-mobiveil.c:106:34: warning: incorrect type in argument 1 (different address spaces)
drivers/pci/controller/mobiveil/pcie-mobiveil.c:106:34:    expected void [noderef] <asn:2> *addr
drivers/pci/controller/mobiveil/pcie-mobiveil.c:106:34:    got void *[assigned] addr
drivers/pci/controller/mobiveil/pcie-mobiveil.c:121:35: warning: incorrect type in argument 1 (different address spaces)
drivers/pci/controller/mobiveil/pcie-mobiveil.c:121:35:    expected void [noderef] <asn:2> *addr
drivers/pci/controller/mobiveil/pcie-mobiveil.c:121:35:    got void *[assigned] addr

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reported-by: kbuild test robot <lkp@intel.com>
2020-03-17 15:38:20 +00:00
Hou Zhiqiang
d29ad70a81 PCI: mobiveil: Add PCIe Gen4 RC driver for Layerscape SoCs
Add a PCI host controller driver for Layerscape SoCs integrating
the Mobiveil GPEX IP.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Andrew Murray <amurray@thegoodpenguin.co.uk>
2020-02-21 11:54:12 +00:00
Hou Zhiqiang
11d22cc395 PCI: mobiveil: Add Header Type field check
Check the Header Type and exit from the host driver initialization if
it is not in host mode.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <amurray@thegoodpenguin.co.uk>
2020-02-21 11:53:22 +00:00
Hou Zhiqiang
029dea3cdc PCI: mobiveil: Add 8-bit and 16-bit CSR register accessors
There are some 8-bit and 16-bit registers in PCIe configuration
space, so add these accessors accordingly.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
Reviewed-by: Andrew Murray <amurray@thegoodpenguin.co.uk>
2020-02-21 11:53:22 +00:00
Hou Zhiqiang
52cae4c708 PCI: mobiveil: Allow mobiveil_host_init() to be used to re-init host
Allow the mobiveil_host_init() function to be used to re-init
host controller's PAB and GPEX CSR register block, since the NXP
integrated Mobiveil IP has to reset and then re-init the PAB
and GPEX CSR registers upon hot-reset.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
Reviewed-by: Andrew Murray <amurray@thegoodpenguin.co.uk>
2020-02-21 11:53:22 +00:00
Hou Zhiqiang
fc99b3311a PCI: mobiveil: Add callback function for link up check
Platforms integrating the Mobiveil GPEX can implement a specific
mechanism to check the link status.

Add a callback to enable platform specific link status functions.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[lorenzo.pieralisi@arm.com: updated log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
2020-02-21 11:53:22 +00:00
Hou Zhiqiang
ed620e9654 PCI: mobiveil: Add callback function for interrupt initialization
The Mobiveil GPEX internal MSI/INTx controller is not implemented
in all platforms in which the Mobiveil GPEX is integrated.

Allow platforms to implement their specific interrupt initialization.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <amurray@thegoodpenguin.co.uk>
2020-02-21 11:53:22 +00:00
Hou Zhiqiang
03bdc38840 PCI: mobiveil: Modularize the Mobiveil PCIe Host Bridge IP driver
Modularize the Mobiveil PCIe host driver according to the abstraction of
Root Complex and Endpoint and move it into a new directory in order to
make it easier to reuse the driver functions to add new host drivers for
systems integrating the Mobiveil PCIe GPEX IP.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
2020-02-21 11:53:22 +00:00