[RFC PATCH 04/11] PCI: tegra: limit to MMU build only
Vladimir Murzin
vladimir.murzin at arm.com
Tue Nov 22 01:40:39 PST 2016
On 22/11/16 09:31, Arnd Bergmann wrote:
> On Tuesday, November 22, 2016 9:26:01 AM CET Vladimir Murzin wrote:
>> This driver uses functionality which available for MMU build only,
>> thus add dependency on MMU.
>>
>> Cc: Thierry Reding <thierry.reding at gmail.com>
>> Signed-off-by: Vladimir Murzin <vladimir.murzin at arm.com>
>>
>
> Can you be more specific about what requires the MMU here?
>
> Is it the I/O space remapping or something else?
Yes it comes from I/O space remapping.
The fill error log:
CC drivers/pci/host/pci-tegra.o
In file included from ./arch/arm/include/asm/page.h:22:0,
from ./arch/arm/include/asm/thread_info.h:17,
from ./include/linux/thread_info.h:58,
from ./include/asm-generic/current.h:4,
from ./arch/arm/include/generated/asm/current.h:1,
from ./include/linux/mutex.h:13,
from ./include/linux/notifier.h:13,
from ./include/linux/clk.h:17,
from drivers/pci/host/pci-tegra.c:29:
drivers/pci/host/pci-tegra.c: In function 'tegra_pcie_bus_alloc':
drivers/pci/host/pci-tegra.c:388:27: error: 'L_PTE_PRESENT' undeclared (first use in this function)
pgprot_t prot = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
^
./arch/arm/include/asm/page-nommu.h:41:26: note: in definition of macro '__pgprot'
#define __pgprot(x) (x)
^
drivers/pci/host/pci-tegra.c:388:27: note: each undeclared identifier is reported only once for each function it appears in
pgprot_t prot = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
^
./arch/arm/include/asm/page-nommu.h:41:26: note: in definition of macro '__pgprot'
#define __pgprot(x) (x)
^
drivers/pci/host/pci-tegra.c:388:43: error: 'L_PTE_YOUNG' undeclared (first use in this function)
pgprot_t prot = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
^
./arch/arm/include/asm/page-nommu.h:41:26: note: in definition of macro '__pgprot'
#define __pgprot(x) (x)
^
drivers/pci/host/pci-tegra.c:388:57: error: 'L_PTE_DIRTY' undeclared (first use in this function)
pgprot_t prot = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
^
./arch/arm/include/asm/page-nommu.h:41:26: note: in definition of macro '__pgprot'
#define __pgprot(x) (x)
^
drivers/pci/host/pci-tegra.c:389:6: error: 'L_PTE_XN' undeclared (first use in this function)
L_PTE_XN | L_PTE_MT_DEV_SHARED | L_PTE_SHARED);
^
./arch/arm/include/asm/page-nommu.h:41:26: note: in definition of macro '__pgprot'
#define __pgprot(x) (x)
^
drivers/pci/host/pci-tegra.c:389:17: error: 'L_PTE_MT_DEV_SHARED' undeclared (first use in this function)
L_PTE_XN | L_PTE_MT_DEV_SHARED | L_PTE_SHARED);
^
./arch/arm/include/asm/page-nommu.h:41:26: note: in definition of macro '__pgprot'
#define __pgprot(x) (x)
^
drivers/pci/host/pci-tegra.c:389:39: error: 'L_PTE_SHARED' undeclared (first use in this function)
L_PTE_XN | L_PTE_MT_DEV_SHARED | L_PTE_SHARED);
^
./arch/arm/include/asm/page-nommu.h:41:26: note: in definition of macro '__pgprot'
#define __pgprot(x) (x)
^
drivers/pci/host/pci-tegra.c: At top level:
drivers/pci/host/pci-tegra.c:501:10: error: 'pci_generic_config_read32' undeclared here (not in a function)
.read = pci_generic_config_read32,
^
drivers/pci/host/pci-tegra.c:502:11: error: 'pci_generic_config_write32' undeclared here (not in a function)
.write = pci_generic_config_write32,
^
drivers/pci/host/pci-tegra.c: In function 'tegra_pcie_relax_enable':
drivers/pci/host/pci-tegra.c:609:2: error: implicit declaration of function 'pcie_capability_set_word' [-Werror=implicit-function-declaration]
pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN);
^
drivers/pci/host/pci-tegra.c: In function 'tegra_pcie_setup':
drivers/pci/host/pci-tegra.c:626:8: error: implicit declaration of function 'pci_remap_iospace' [-Werror=implicit-function-declaration]
err = pci_remap_iospace(&pcie->pio, pcie->io.start);
^
drivers/pci/host/pci-tegra.c:628:3: error: implicit declaration of function 'pci_add_resource_offset' [-Werror=implicit-function-declaration]
pci_add_resource_offset(&sys->resources, &pcie->pio,
^
drivers/pci/host/pci-tegra.c:634:2: error: implicit declaration of function 'pci_add_resource' [-Werror=implicit-function-declaration]
pci_add_resource(&sys->resources, &pcie->busn);
^
drivers/pci/host/pci-tegra.c:636:8: error: implicit declaration of function 'devm_request_pci_bus_resources' [-Werror=implicit-function-declaration]
err = devm_request_pci_bus_resources(dev, &sys->resources);
^
cc1: some warnings being treated as errors
make[1]: *** [drivers/pci/host/pci-tegra.o] Error 1
make: *** [drivers/pci/host/pci-tegra.o] Error 2
Cheers
Vladimir
>
> Arnd
>
>
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