| Message ID | 20220801211240.597859-5-quic_eberman@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Drivers for gunyah hypervisor | expand |
On 02/08/2022 00:12, Elliot Berman wrote: > Add architecture-independent standard error codes, types, and macros for > Gunyah hypercalls. > > Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> > --- > MAINTAINERS | 1 + > include/linux/gunyah.h | 75 ++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 76 insertions(+) > create mode 100644 include/linux/gunyah.h > > diff --git a/MAINTAINERS b/MAINTAINERS > index 02f97ac90cdf..2e4f1d9ed47b 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -8744,6 +8744,7 @@ S: Maintained > F: Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml > F: Documentation/virt/gunyah/ > F: arch/arm64/include/asm/gunyah.h > +F: include/linux/gunyah.h > > HABANALABS PCI DRIVER > M: Oded Gabbay <ogabbay@kernel.org> > diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h > new file mode 100644 > index 000000000000..69931a0f5736 > --- /dev/null > +++ b/include/linux/gunyah.h > @@ -0,0 +1,75 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. > + */ > + > +#ifndef _GUNYAH_H > +#define _GUNYAH_H > + > +#include <linux/types.h> > +#include <linux/errno.h> > +#include <asm/gunyah.h> > + > +typedef u64 gh_capid_t; > + > +/* Common Gunyah macros */ > +#define GH_CAPID_INVAL U64_MAX > + > +#define GH_ERROR_OK 0 Is there any semantic difference between GH_ERROR_foo < 0 and GH_ERROR_bar > 0 ? > +#define GH_ERROR_UNIMPLEMENTED -1 > +#define GH_ERROR_RETRY -2 > + > +#define GH_ERROR_ARG_INVAL 1 > +#define GH_ERROR_ARG_SIZE 2 > +#define GH_ERROR_ARG_ALIGN 3 > + > +#define GH_ERROR_NOMEM 10 > + > +#define GH_ERROR_ADDR_OVFL 20 > +#define GH_ERROR_ADDR_UNFL 21 > +#define GH_ERROR_ADDR_INVAL 22 > + > +#define GH_ERROR_DENIED 30 > +#define GH_ERROR_BUSY 31 > +#define GH_ERROR_IDLE 32 > + > +#define GH_ERROR_IRQ_BOUND 40 > +#define GH_ERROR_IRQ_UNBOUND 41 > + > +#define GH_ERROR_CSPACE_CAP_NULL 50 > +#define GH_ERROR_CSPACE_CAP_REVOKED 51 > +#define GH_ERROR_CSPACE_WRONG_OBJ_TYPE 52 > +#define GH_ERROR_CSPACE_INSUF_RIGHTS 53 > +#define GH_ERROR_CSPACE_FULL 54 > + > +#define GH_ERROR_MSGQUEUE_EMPTY 60 > +#define GH_ERROR_MSGQUEUE_FULL 61 > + > +static inline int gh_remap_error(int gh_error) > +{ > + switch (gh_error) { > + case GH_ERROR_OK: > + return 0; > + case GH_ERROR_NOMEM: > + return -ENOMEM; > + case GH_ERROR_DENIED: > + case GH_ERROR_CSPACE_CAP_NULL: > + case GH_ERROR_CSPACE_CAP_REVOKED: > + case GH_ERROR_CSPACE_WRONG_OBJ_TYPE: > + case GH_ERROR_CSPACE_INSUF_RIGHTS: > + case GH_ERROR_CSPACE_FULL: > + return -EACCES; > + case GH_ERROR_BUSY: > + case GH_ERROR_IDLE: > + return -EBUSY; > + case GH_ERROR_IRQ_BOUND: > + case GH_ERROR_IRQ_UNBOUND: > + case GH_ERROR_MSGQUEUE_FULL: > + case GH_ERROR_MSGQUEUE_EMPTY: > + return -EPERM; > + default: > + return -EINVAL; > + } > +} > + > +#endif
On 02/08/2022 00:12, Elliot Berman wrote: > Add architecture-independent standard error codes, types, and macros for > Gunyah hypercalls. > > Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> > --- > MAINTAINERS | 1 + > include/linux/gunyah.h | 75 ++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 76 insertions(+) > create mode 100644 include/linux/gunyah.h > > diff --git a/MAINTAINERS b/MAINTAINERS > index 02f97ac90cdf..2e4f1d9ed47b 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -8744,6 +8744,7 @@ S: Maintained > F: Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml > F: Documentation/virt/gunyah/ > F: arch/arm64/include/asm/gunyah.h > +F: include/linux/gunyah.h > > HABANALABS PCI DRIVER > M: Oded Gabbay <ogabbay@kernel.org> > diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h > new file mode 100644 > index 000000000000..69931a0f5736 > --- /dev/null > +++ b/include/linux/gunyah.h > @@ -0,0 +1,75 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. > + */ > + > +#ifndef _GUNYAH_H > +#define _GUNYAH_H > + > +#include <linux/types.h> > +#include <linux/errno.h> > +#include <asm/gunyah.h> > + > +typedef u64 gh_capid_t; I think there was a rule on typedefs? Maybe I'm mistaken, couldn't find one. Why do you need it in the first place? Just use u64. Or 'enum gh_capid'. > + > +/* Common Gunyah macros */ > +#define GH_CAPID_INVAL U64_MAX > +
On 8/2/2022 12:51 AM, Dmitry Baryshkov wrote: > On 02/08/2022 00:12, Elliot Berman wrote: >> Add architecture-independent standard error codes, types, and macros for >> Gunyah hypercalls. >> >> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> >> --- >> MAINTAINERS | 1 + >> include/linux/gunyah.h | 75 ++++++++++++++++++++++++++++++++++++++++++ >> 2 files changed, 76 insertions(+) >> create mode 100644 include/linux/gunyah.h >> >> diff --git a/MAINTAINERS b/MAINTAINERS >> index 02f97ac90cdf..2e4f1d9ed47b 100644 >> --- a/MAINTAINERS >> +++ b/MAINTAINERS >> @@ -8744,6 +8744,7 @@ S: Maintained >> F: Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml >> F: Documentation/virt/gunyah/ >> F: arch/arm64/include/asm/gunyah.h >> +F: include/linux/gunyah.h >> HABANALABS PCI DRIVER >> M: Oded Gabbay <ogabbay@kernel.org> >> diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h >> new file mode 100644 >> index 000000000000..69931a0f5736 >> --- /dev/null >> +++ b/include/linux/gunyah.h >> @@ -0,0 +1,75 @@ >> +/* SPDX-License-Identifier: GPL-2.0-only */ >> +/* >> + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights >> reserved. >> + */ >> + >> +#ifndef _GUNYAH_H >> +#define _GUNYAH_H >> + >> +#include <linux/types.h> >> +#include <linux/errno.h> >> +#include <asm/gunyah.h> >> + >> +typedef u64 gh_capid_t; > > I think there was a rule on typedefs? Maybe I'm mistaken, couldn't find > one. Why do you need it in the first place? Just use u64. Or 'enum > gh_capid'. > The rules are in Documentation/process/coding-style.rst. gh_capid_it is totally opaque to Linux, but I will switch to use u64 throughout. >> + >> +/* Common Gunyah macros */ >> +#define GH_CAPID_INVAL U64_MAX >> + > > >
On 8/2/2022 12:33 AM, Dmitry Baryshkov wrote: > On 02/08/2022 00:12, Elliot Berman wrote: >> Add architecture-independent standard error codes, types, and macros for >> Gunyah hypercalls. >> >> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> >> --- >> MAINTAINERS | 1 + >> include/linux/gunyah.h | 75 ++++++++++++++++++++++++++++++++++++++++++ >> 2 files changed, 76 insertions(+) >> create mode 100644 include/linux/gunyah.h >> >> diff --git a/MAINTAINERS b/MAINTAINERS >> index 02f97ac90cdf..2e4f1d9ed47b 100644 >> --- a/MAINTAINERS >> +++ b/MAINTAINERS >> @@ -8744,6 +8744,7 @@ S: Maintained >> F: Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml >> F: Documentation/virt/gunyah/ >> F: arch/arm64/include/asm/gunyah.h >> +F: include/linux/gunyah.h >> HABANALABS PCI DRIVER >> M: Oded Gabbay <ogabbay@kernel.org> >> diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h >> new file mode 100644 >> index 000000000000..69931a0f5736 >> --- /dev/null >> +++ b/include/linux/gunyah.h >> @@ -0,0 +1,75 @@ >> +/* SPDX-License-Identifier: GPL-2.0-only */ >> +/* >> + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights >> reserved. >> + */ >> + >> +#ifndef _GUNYAH_H >> +#define _GUNYAH_H >> + >> +#include <linux/types.h> >> +#include <linux/errno.h> >> +#include <asm/gunyah.h> >> + >> +typedef u64 gh_capid_t; >> + >> +/* Common Gunyah macros */ >> +#define GH_CAPID_INVAL U64_MAX >> + >> +#define GH_ERROR_OK 0 > > Is there any semantic difference between GH_ERROR_foo < 0 and > GH_ERROR_bar > 0 ? > GH_ERROR_foo < 0 comes from Gunyah's plumbing for handling hypercalls. GH_ERROR_bar > 0 comes from the hypercall itself. >> +#define GH_ERROR_UNIMPLEMENTED -1 >> +#define GH_ERROR_RETRY -2 >> + >> +#define GH_ERROR_ARG_INVAL 1 >> +#define GH_ERROR_ARG_SIZE 2 >> +#define GH_ERROR_ARG_ALIGN 3 >> + >> +#define GH_ERROR_NOMEM 10 >> + >> +#define GH_ERROR_ADDR_OVFL 20 >> +#define GH_ERROR_ADDR_UNFL 21 >> +#define GH_ERROR_ADDR_INVAL 22 >> + >> +#define GH_ERROR_DENIED 30 >> +#define GH_ERROR_BUSY 31 >> +#define GH_ERROR_IDLE 32 >> + >> +#define GH_ERROR_IRQ_BOUND 40 >> +#define GH_ERROR_IRQ_UNBOUND 41 >> + >> +#define GH_ERROR_CSPACE_CAP_NULL 50 >> +#define GH_ERROR_CSPACE_CAP_REVOKED 51 >> +#define GH_ERROR_CSPACE_WRONG_OBJ_TYPE 52 >> +#define GH_ERROR_CSPACE_INSUF_RIGHTS 53 >> +#define GH_ERROR_CSPACE_FULL 54 >> + >> +#define GH_ERROR_MSGQUEUE_EMPTY 60 >> +#define GH_ERROR_MSGQUEUE_FULL 61 >> + >> +static inline int gh_remap_error(int gh_error) >> +{ >> + switch (gh_error) { >> + case GH_ERROR_OK: >> + return 0; >> + case GH_ERROR_NOMEM: >> + return -ENOMEM; >> + case GH_ERROR_DENIED: >> + case GH_ERROR_CSPACE_CAP_NULL: >> + case GH_ERROR_CSPACE_CAP_REVOKED: >> + case GH_ERROR_CSPACE_WRONG_OBJ_TYPE: >> + case GH_ERROR_CSPACE_INSUF_RIGHTS: >> + case GH_ERROR_CSPACE_FULL: >> + return -EACCES; >> + case GH_ERROR_BUSY: >> + case GH_ERROR_IDLE: >> + return -EBUSY; >> + case GH_ERROR_IRQ_BOUND: >> + case GH_ERROR_IRQ_UNBOUND: >> + case GH_ERROR_MSGQUEUE_FULL: >> + case GH_ERROR_MSGQUEUE_EMPTY: >> + return -EPERM; >> + default: >> + return -EINVAL; >> + } >> +} >> + >> +#endif > >
diff --git a/MAINTAINERS b/MAINTAINERS index 02f97ac90cdf..2e4f1d9ed47b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8744,6 +8744,7 @@ S: Maintained F: Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml F: Documentation/virt/gunyah/ F: arch/arm64/include/asm/gunyah.h +F: include/linux/gunyah.h HABANALABS PCI DRIVER M: Oded Gabbay <ogabbay@kernel.org> diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h new file mode 100644 index 000000000000..69931a0f5736 --- /dev/null +++ b/include/linux/gunyah.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _GUNYAH_H +#define _GUNYAH_H + +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/gunyah.h> + +typedef u64 gh_capid_t; + +/* Common Gunyah macros */ +#define GH_CAPID_INVAL U64_MAX + +#define GH_ERROR_OK 0 +#define GH_ERROR_UNIMPLEMENTED -1 +#define GH_ERROR_RETRY -2 + +#define GH_ERROR_ARG_INVAL 1 +#define GH_ERROR_ARG_SIZE 2 +#define GH_ERROR_ARG_ALIGN 3 + +#define GH_ERROR_NOMEM 10 + +#define GH_ERROR_ADDR_OVFL 20 +#define GH_ERROR_ADDR_UNFL 21 +#define GH_ERROR_ADDR_INVAL 22 + +#define GH_ERROR_DENIED 30 +#define GH_ERROR_BUSY 31 +#define GH_ERROR_IDLE 32 + +#define GH_ERROR_IRQ_BOUND 40 +#define GH_ERROR_IRQ_UNBOUND 41 + +#define GH_ERROR_CSPACE_CAP_NULL 50 +#define GH_ERROR_CSPACE_CAP_REVOKED 51 +#define GH_ERROR_CSPACE_WRONG_OBJ_TYPE 52 +#define GH_ERROR_CSPACE_INSUF_RIGHTS 53 +#define GH_ERROR_CSPACE_FULL 54 + +#define GH_ERROR_MSGQUEUE_EMPTY 60 +#define GH_ERROR_MSGQUEUE_FULL 61 + +static inline int gh_remap_error(int gh_error) +{ + switch (gh_error) { + case GH_ERROR_OK: + return 0; + case GH_ERROR_NOMEM: + return -ENOMEM; + case GH_ERROR_DENIED: + case GH_ERROR_CSPACE_CAP_NULL: + case GH_ERROR_CSPACE_CAP_REVOKED: + case GH_ERROR_CSPACE_WRONG_OBJ_TYPE: + case GH_ERROR_CSPACE_INSUF_RIGHTS: + case GH_ERROR_CSPACE_FULL: + return -EACCES; + case GH_ERROR_BUSY: + case GH_ERROR_IDLE: + return -EBUSY; + case GH_ERROR_IRQ_BOUND: + case GH_ERROR_IRQ_UNBOUND: + case GH_ERROR_MSGQUEUE_FULL: + case GH_ERROR_MSGQUEUE_EMPTY: + return -EPERM; + default: + return -EINVAL; + } +} + +#endif
Add architecture-independent standard error codes, types, and macros for Gunyah hypercalls. Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> --- MAINTAINERS | 1 + include/linux/gunyah.h | 75 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+) create mode 100644 include/linux/gunyah.h