search for: cpu_addr

..._GFP (GFP_KERNEL | __GFP_ZERO) > + > + > +struct device *cio_get_dma_css_dev(void) > +{ > + return &channel_subsystems[0]->device; > +} > + > +struct gen_pool *cio_gp_dma_create(struct device *dma_dev, int nr_pages) > +{ > + struct gen_pool *gp_dma; > + void *cpu_addr; > + dma_addr_t dma_addr; > + int i; > + > + gp_dma = gen_pool_create(3, -1); > + if (!gp_dma) > + return NULL; > + for (i = 0; i < nr_pages; ++i) { > + cpu_addr = dma_alloc_coherent(dma_dev, PAGE_SIZE, &dma_addr, > + CIO_DMA_GFP); > + if (!cpu_addr...

..._GFP (GFP_KERNEL | __GFP_ZERO) > + > + > +struct device *cio_get_dma_css_dev(void) > +{ > + return &channel_subsystems[0]->device; > +} > + > +struct gen_pool *cio_gp_dma_create(struct device *dma_dev, int nr_pages) > +{ > + struct gen_pool *gp_dma; > + void *cpu_addr; > + dma_addr_t dma_addr; > + int i; > + > + gp_dma = gen_pool_create(3, -1); > + if (!gp_dma) > + return NULL; > + for (i = 0; i < nr_pages; ++i) { > + cpu_addr = dma_alloc_coherent(dma_dev, PAGE_SIZE, &dma_addr, > + CIO_DMA_GFP); > + if (!cpu_addr...

...ne SIGP_STAT_OPERATOR_INTERV 0x00000020UL +#define SIGP_STAT_CHECK_STOP 0x00000010UL +#define SIGP_STAT_INOPERATIVE 0x00000004UL +#define SIGP_STAT_INVALID_ORDER 0x00000002UL +#define SIGP_STAT_RECEIVER_CHECK 0x00000001UL + + +static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, u64 *reg) +{ + struct float_interrupt *fi = &vcpu->kvm->arch.float_int; + int rc; + + if (cpu_addr >= KVM_MAX_VCPUS) + return 3; /* not operational */ + + spin_lock_bh(&fi->lock); + if (fi->local_int[cpu_addr] == NULL) + rc = 3; /* not operational */ + else if (atomic_read...

.../linux/dma-attrs.h diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt index 45ef3f279c3b..24f9688bb98a 100644 --- a/Documentation/DMA-API.txt +++ b/Documentation/DMA-API.txt @@ -369,35 +369,32 @@ See also dma_map_single(). dma_addr_t dma_map_single_attrs(struct device *dev, void *cpu_addr, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) void dma_unmap_single_attrs(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long at...

...2775a 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -328,6 +328,17 @@ static inline u8 pathmask_to_pos(u8 mask) void channel_subsystem_reinit(void); extern void css_schedule_reprobe(void); +extern void *cio_dma_zalloc(size_t size); +extern void cio_dma_free(void *cpu_addr, size_t size); +extern struct device *cio_get_dma_css_dev(void); + +struct gen_pool; +void *cio_gp_dma_zalloc(struct gen_pool *gp_dma, struct device *dma_dev, + size_t size); +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size); +void cio_gp_dma_destroy(struct gen_pool *gp_...

...2775a 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -328,6 +328,17 @@ static inline u8 pathmask_to_pos(u8 mask) void channel_subsystem_reinit(void); extern void css_schedule_reprobe(void); +extern void *cio_dma_zalloc(size_t size); +extern void cio_dma_free(void *cpu_addr, size_t size); +extern struct device *cio_get_dma_css_dev(void); + +struct gen_pool; +void *cio_gp_dma_zalloc(struct gen_pool *gp_dma, struct device *dma_dev, + size_t size); +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size); +void cio_gp_dma_destroy(struct gen_pool *gp_...

...2775a 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -328,6 +328,17 @@ static inline u8 pathmask_to_pos(u8 mask) void channel_subsystem_reinit(void); extern void css_schedule_reprobe(void); +extern void *cio_dma_zalloc(size_t size); +extern void cio_dma_free(void *cpu_addr, size_t size); +extern struct device *cio_get_dma_css_dev(void); + +struct gen_pool; +void *cio_gp_dma_zalloc(struct gen_pool *gp_dma, struct device *dma_dev, + size_t size); +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size); +void cio_gp_dma_destroy(struct gen_pool *gp_...

...t;linux/genalloc.h> #include <asm/types.h> #define LPM_ANYPATH 0xff @@ -328,6 +329,16 @@ static inline u8 pathmask_to_pos(u8 mask) void channel_subsystem_reinit(void); extern void css_schedule_reprobe(void); +extern void *cio_dma_zalloc(size_t size); +extern void cio_dma_free(void *cpu_addr, size_t size); +extern struct device *cio_get_dma_css_dev(void); + +void *cio_gp_dma_zalloc(struct gen_pool *gp_dma, struct device *dma_dev, + size_t size); +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size); +void cio_gp_dma_destroy(struct gen_pool *gp_dma, struct device...

...t;linux/genalloc.h> #include <asm/types.h> #define LPM_ANYPATH 0xff @@ -328,6 +329,16 @@ static inline u8 pathmask_to_pos(u8 mask) void channel_subsystem_reinit(void); extern void css_schedule_reprobe(void); +extern void *cio_dma_zalloc(size_t size); +extern void cio_dma_free(void *cpu_addr, size_t size); +extern struct device *cio_get_dma_css_dev(void); + +void *cio_gp_dma_zalloc(struct gen_pool *gp_dma, struct device *dma_dev, + size_t size); +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size); +void cio_gp_dma_destroy(struct gen_pool *gp_dma, struct device...

...> > +struct device *cio_get_dma_css_dev(void) > > +{ > > + return &channel_subsystems[0]->device; > > +} > > + > > +struct gen_pool *cio_gp_dma_create(struct device *dma_dev, int nr_pages) > > +{ > > + struct gen_pool *gp_dma; > > + void *cpu_addr; > > + dma_addr_t dma_addr; > > + int i; > > + > > + gp_dma = gen_pool_create(3, -1); > > + if (!gp_dma) > > + return NULL; > > + for (i = 0; i < nr_pages; ++i) { > > + cpu_addr = dma_alloc_coherent(dma_dev, PAGE_SIZE, &dma_addr, > > +...

...de/asm/cio.h > +++ b/arch/s390/include/asm/cio.h > @@ -328,6 +328,9 @@ static inline u8 pathmask_to_pos(u8 mask) > void channel_subsystem_reinit(void); > extern void css_schedule_reprobe(void); > > +extern void *cio_dma_zalloc(size_t size); > +extern void cio_dma_free(void *cpu_addr, size_t size); > + > /* Function from drivers/s390/cio/chsc.c */ > int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta); > int chsc_sstpi(void *page, void *result, size_t size); > diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c > index aea5029226...

...add_inbuf(vrp->rvq, &sg, 1, msg, GFP_KERNEL); > if (err < 0) { > dev_err(dev, "failed to add a virtqueue buffer: %d\n", err); > return err; > @@ -1007,9 +1023,9 @@ static int rpmsg_probe(struct virtio_device *vdev) > struct scatterlist sg; > void *cpu_addr = vrp->rbufs + i * RPMSG_BUF_SIZE; > > - sg_init_one(&sg, cpu_addr, RPMSG_BUF_SIZE); > + rpmsg_msg_sg_init(vrp, &sg, cpu_addr, RPMSG_BUF_SIZE); > > - err = virtqueue_add_inbuf(vrp->rvq, &sg, 1, cpu_addr, > + err = dma_virtqueue_add_inbuf(vrp->rvq, &amp...

...add_inbuf(vrp->rvq, &sg, 1, msg, GFP_KERNEL); > if (err < 0) { > dev_err(dev, "failed to add a virtqueue buffer: %d\n", err); > return err; > @@ -1007,9 +1023,9 @@ static int rpmsg_probe(struct virtio_device *vdev) > struct scatterlist sg; > void *cpu_addr = vrp->rbufs + i * RPMSG_BUF_SIZE; > > - sg_init_one(&sg, cpu_addr, RPMSG_BUF_SIZE); > + rpmsg_msg_sg_init(vrp, &sg, cpu_addr, RPMSG_BUF_SIZE); > > - err = virtqueue_add_inbuf(vrp->rvq, &sg, 1, cpu_addr, > + err = dma_virtqueue_add_inbuf(vrp->rvq, &amp...

...ERNEL); + err = dma_virtqueue_add_inbuf(vrp->rvq, &sg, 1, msg, GFP_KERNEL); if (err < 0) { dev_err(dev, "failed to add a virtqueue buffer: %d\n", err); return err; @@ -1007,9 +1023,9 @@ static int rpmsg_probe(struct virtio_device *vdev) struct scatterlist sg; void *cpu_addr = vrp->rbufs + i * RPMSG_BUF_SIZE; - sg_init_one(&sg, cpu_addr, RPMSG_BUF_SIZE); + rpmsg_msg_sg_init(vrp, &sg, cpu_addr, RPMSG_BUF_SIZE); - err = virtqueue_add_inbuf(vrp->rvq, &sg, 1, cpu_addr, + err = dma_virtqueue_add_inbuf(vrp->rvq, &sg, 1, cpu_addr, GFP...

...= gfp, .prot = prot, .caller = caller, - .want_vaddr = !dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs), + .want_vaddr = ((attrs & DMA_ATTR_NO_KERNEL_MAPPING) == 0), }; #ifdef CONFIG_DMA_API_DEBUG @@ -887,7 +887,7 @@ static void __arm_dma_free(struct device *dev, size_t size, void *cpu_addr, .size = PAGE_ALIGN(size), .cpu_addr = cpu_addr, .page = page, - .want_vaddr = !dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs), + .want_vaddr = ((attrs & DMA_ATTR_NO_KERNEL_MAPPING) == 0), }; buf = arm_dma_buffer_find(cpu_addr); @@ -1267,7 +1267,7 @@ static struct page **__iom...

...__GFP_ZERO) __GFP_ZERO has no meaning with the dma api (since all implementations do an implicit zero initialization) but let's keep it for the sake of documentation. We need GFP_DMA here (which will return addresses < 2G on s390)! > +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size) > +{ > + if (!cpu_addr) > + return; > + memset(cpu_addr, 0, size); Hm, normally I'd do the memset during alloc not during free - but maybe this makes more sense here with your usecase in mind. > @@ -1063,6 +1163,7 @@ static int __init css_bus_init(void) > u...

...__GFP_ZERO) __GFP_ZERO has no meaning with the dma api (since all implementations do an implicit zero initialization) but let's keep it for the sake of documentation. We need GFP_DMA here (which will return addresses < 2G on s390)! > +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size) > +{ > + if (!cpu_addr) > + return; > + memset(cpu_addr, 0, size); Hm, normally I'd do the memset during alloc not during free - but maybe this makes more sense here with your usecase in mind. > @@ -1063,6 +1163,7 @@ static int __init css_bus_init(void) > u...

From: "Edgar E. Iglesias" <edgar.iglesias at xilinx.com> I'm trying to run rpmsg and remoteproc on the ZynqMP (arm64) but I'm hitting a DMA/mm error. The issue was discussed here: http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/333050.html Russel King pointed out that the arm64 is not doing anything wrong by returning vmapped memory (which is incompatible

From: "Edgar E. Iglesias" <edgar.iglesias at xilinx.com> I'm trying to run rpmsg and remoteproc on the ZynqMP (arm64) but I'm hitting a DMA/mm error. The issue was discussed here: http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/333050.html Russel King pointed out that the arm64 is not doing anything wrong by returning vmapped memory (which is incompatible

..., 1, msg, GFP_KERNEL); > > if (err < 0) { > > dev_err(dev, "failed to add a virtqueue buffer: %d\n", err); > > return err; > > @@ -1007,9 +1023,9 @@ static int rpmsg_probe(struct virtio_device *vdev) > > struct scatterlist sg; > > void *cpu_addr = vrp->rbufs + i * RPMSG_BUF_SIZE; > > > > - sg_init_one(&sg, cpu_addr, RPMSG_BUF_SIZE); > > + rpmsg_msg_sg_init(vrp, &sg, cpu_addr, RPMSG_BUF_SIZE); > > > > - err = virtqueue_add_inbuf(vrp->rvq, &sg, 1, cpu_addr, > > + err = dma_virtque...