From 7a36e42d9114474278ce30ba36945cc62292eb60 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 3 Sep 2020 10:28:32 +0200 Subject: dma: Let dma_memory_set() take MemTxAttrs argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Let devices specify transaction attributes when calling dma_memory_set(). Reviewed-by: Richard Henderson Reviewed-by: Li Qiang Reviewed-by: Edgar E. Iglesias Signed-off-by: Philippe Mathieu-Daudé Acked-by: Stefan Hajnoczi Message-Id: <20211223115554.3155328-3-philmd@redhat.com> --- softmmu/dma-helpers.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 7d766a5e89..1f07217ad4 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -19,7 +19,7 @@ /* #define DEBUG_IOMMU */ MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr, - uint8_t c, dma_addr_t len) + uint8_t c, dma_addr_t len, MemTxAttrs attrs) { dma_barrier(as, DMA_DIRECTION_FROM_DEVICE); @@ -31,8 +31,7 @@ MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr, memset(fillbuf, c, FILLBUF_SIZE); while (len > 0) { l = len < FILLBUF_SIZE ? len : FILLBUF_SIZE; - error |= address_space_write(as, addr, MEMTXATTRS_UNSPECIFIED, - fillbuf, l); + error |= address_space_write(as, addr, attrs, fillbuf, l); len -= l; addr += l; } -- cgit 1.4.1 From 23faf5694ff8054b847e9733297727be4a641132 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 3 Sep 2020 09:37:43 +0200 Subject: dma: Let dma_memory_rw() take MemTxAttrs argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Let devices specify transaction attributes when calling dma_memory_rw(). Reviewed-by: Richard Henderson Reviewed-by: Li Qiang Reviewed-by: Edgar E. Iglesias Signed-off-by: Philippe Mathieu-Daudé Acked-by: Stefan Hajnoczi Message-Id: <20211223115554.3155328-5-philmd@redhat.com> --- hw/intc/spapr_xive.c | 3 ++- hw/usb/hcd-ohci.c | 10 ++++++---- include/hw/pci/pci.h | 3 ++- include/sysemu/dma.h | 11 ++++++----- softmmu/dma-helpers.c | 3 ++- 5 files changed, 18 insertions(+), 12 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index 4ec659b93e..eae95c716f 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -1684,7 +1684,8 @@ static target_ulong h_int_esb(PowerPCCPU *cpu, mmio_addr = xive->vc_base + xive_source_esb_mgmt(xsrc, lisn) + offset; if (dma_memory_rw(&address_space_memory, mmio_addr, &data, 8, - (flags & SPAPR_XIVE_ESB_STORE))) { + (flags & SPAPR_XIVE_ESB_STORE), + MEMTXATTRS_UNSPECIFIED)) { qemu_log_mask(LOG_GUEST_ERROR, "XIVE: failed to access ESB @0x%" HWADDR_PRIx "\n", mmio_addr); return H_HARDWARE; diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c index 1cf2816772..56e2315c73 100644 --- a/hw/usb/hcd-ohci.c +++ b/hw/usb/hcd-ohci.c @@ -586,7 +586,8 @@ static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td, if (n > len) n = len; - if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) { + if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, + n, dir, MEMTXATTRS_UNSPECIFIED)) { return -1; } if (n == len) { @@ -595,7 +596,7 @@ static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td, ptr = td->be & ~0xfffu; buf += n; if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, - len - n, dir)) { + len - n, dir, MEMTXATTRS_UNSPECIFIED)) { return -1; } return 0; @@ -613,7 +614,8 @@ static int ohci_copy_iso_td(OHCIState *ohci, if (n > len) n = len; - if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) { + if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, + n, dir, MEMTXATTRS_UNSPECIFIED)) { return -1; } if (n == len) { @@ -622,7 +624,7 @@ static int ohci_copy_iso_td(OHCIState *ohci, ptr = end_addr & ~0xfffu; buf += n; if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, - len - n, dir)) { + len - n, dir, MEMTXATTRS_UNSPECIFIED)) { return -1; } return 0; diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index e7cdf2d5ec..4383f1c95e 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -808,7 +808,8 @@ static inline MemTxResult pci_dma_rw(PCIDevice *dev, dma_addr_t addr, void *buf, dma_addr_t len, DMADirection dir) { - return dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir); + return dma_memory_rw(pci_get_address_space(dev), addr, buf, len, + dir, MEMTXATTRS_UNSPECIFIED); } /** diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index 3be803cf3f..e8ad42226f 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -121,15 +121,15 @@ static inline MemTxResult dma_memory_write_relaxed(AddressSpace *as, * @buf: buffer with the data transferred * @len: the number of bytes to read or write * @dir: indicates the transfer direction + * @attrs: memory transaction attributes */ static inline MemTxResult dma_memory_rw(AddressSpace *as, dma_addr_t addr, void *buf, dma_addr_t len, - DMADirection dir) + DMADirection dir, MemTxAttrs attrs) { dma_barrier(as, dir); - return dma_memory_rw_relaxed(as, addr, buf, len, dir, - MEMTXATTRS_UNSPECIFIED); + return dma_memory_rw_relaxed(as, addr, buf, len, dir, attrs); } /** @@ -147,7 +147,8 @@ static inline MemTxResult dma_memory_rw(AddressSpace *as, dma_addr_t addr, static inline MemTxResult dma_memory_read(AddressSpace *as, dma_addr_t addr, void *buf, dma_addr_t len) { - return dma_memory_rw(as, addr, buf, len, DMA_DIRECTION_TO_DEVICE); + return dma_memory_rw(as, addr, buf, len, + DMA_DIRECTION_TO_DEVICE, MEMTXATTRS_UNSPECIFIED); } /** @@ -166,7 +167,7 @@ static inline MemTxResult dma_memory_write(AddressSpace *as, dma_addr_t addr, const void *buf, dma_addr_t len) { return dma_memory_rw(as, addr, (void *)buf, len, - DMA_DIRECTION_FROM_DEVICE); + DMA_DIRECTION_FROM_DEVICE, MEMTXATTRS_UNSPECIFIED); } /** diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 1f07217ad4..5bf76fff6b 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -305,7 +305,8 @@ static uint64_t dma_buf_rw(uint8_t *ptr, int32_t len, QEMUSGList *sg, while (len > 0) { ScatterGatherEntry entry = sg->sg[sg_cur_index++]; int32_t xfer = MIN(len, entry.len); - dma_memory_rw(sg->as, entry.base, ptr, xfer, dir); + dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, + MEMTXATTRS_UNSPECIFIED); ptr += xfer; len -= xfer; resid -= xfer; -- cgit 1.4.1 From a1d4b0a3051b3079c8db607f519bc0fcb30e17ec Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 3 Sep 2020 11:00:47 +0200 Subject: dma: Let dma_memory_map() take MemTxAttrs argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Let devices specify transaction attributes when calling dma_memory_map(). Patch created mechanically using spatch with this script: @@ expression E1, E2, E3, E4; @@ - dma_memory_map(E1, E2, E3, E4) + dma_memory_map(E1, E2, E3, E4, MEMTXATTRS_UNSPECIFIED) Reviewed-by: Richard Henderson Reviewed-by: Li Qiang Reviewed-by: Edgar E. Iglesias Signed-off-by: Philippe Mathieu-Daudé Acked-by: Stefan Hajnoczi Message-Id: <20211223115554.3155328-7-philmd@redhat.com> --- hw/display/virtio-gpu.c | 10 ++++++---- hw/hyperv/vmbus.c | 8 +++++--- hw/ide/ahci.c | 8 +++++--- hw/usb/libhw.c | 3 ++- hw/virtio/virtio.c | 6 ++++-- include/hw/pci/pci.h | 3 ++- include/sysemu/dma.h | 5 +++-- softmmu/dma-helpers.c | 3 ++- 8 files changed, 29 insertions(+), 17 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index d78b9700c7..c6dc818988 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -814,8 +814,9 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g, do { len = l; - map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, - a, &len, DMA_DIRECTION_TO_DEVICE); + map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, a, &len, + DMA_DIRECTION_TO_DEVICE, + MEMTXATTRS_UNSPECIFIED); if (!map) { qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for" " element %d\n", __func__, e); @@ -1252,8 +1253,9 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, for (i = 0; i < res->iov_cnt; i++) { hwaddr len = res->iov[i].iov_len; res->iov[i].iov_base = - dma_memory_map(VIRTIO_DEVICE(g)->dma_as, - res->addrs[i], &len, DMA_DIRECTION_TO_DEVICE); + dma_memory_map(VIRTIO_DEVICE(g)->dma_as, res->addrs[i], &len, + DMA_DIRECTION_TO_DEVICE, + MEMTXATTRS_UNSPECIFIED); if (!res->iov[i].iov_base || len != res->iov[i].iov_len) { /* Clean up the half-a-mapping we just created... */ diff --git a/hw/hyperv/vmbus.c b/hw/hyperv/vmbus.c index dbce3b35fb..8aad29f1bb 100644 --- a/hw/hyperv/vmbus.c +++ b/hw/hyperv/vmbus.c @@ -373,7 +373,8 @@ static ssize_t gpadl_iter_io(GpadlIter *iter, void *buf, uint32_t len) maddr = (iter->gpadl->gfns[idx] << TARGET_PAGE_BITS) | off_in_page; - iter->map = dma_memory_map(iter->as, maddr, &mlen, iter->dir); + iter->map = dma_memory_map(iter->as, maddr, &mlen, iter->dir, + MEMTXATTRS_UNSPECIFIED); if (mlen != pgleft) { dma_memory_unmap(iter->as, iter->map, mlen, iter->dir, 0); iter->map = NULL; @@ -490,7 +491,8 @@ int vmbus_map_sgl(VMBusChanReq *req, DMADirection dir, struct iovec *iov, goto err; } - iov[ret_cnt].iov_base = dma_memory_map(sgl->as, a, &l, dir); + iov[ret_cnt].iov_base = dma_memory_map(sgl->as, a, &l, dir, + MEMTXATTRS_UNSPECIFIED); if (!l) { ret = -EFAULT; goto err; @@ -566,7 +568,7 @@ static vmbus_ring_buffer *ringbuf_map_hdr(VMBusRingBufCommon *ringbuf) dma_addr_t mlen = sizeof(*rb); rb = dma_memory_map(ringbuf->as, ringbuf->rb_addr, &mlen, - DMA_DIRECTION_FROM_DEVICE); + DMA_DIRECTION_FROM_DEVICE, MEMTXATTRS_UNSPECIFIED); if (mlen != sizeof(*rb)) { dma_memory_unmap(ringbuf->as, rb, mlen, DMA_DIRECTION_FROM_DEVICE, 0); diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index a94c6e26fb..8e77ddb660 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -249,7 +249,8 @@ static void map_page(AddressSpace *as, uint8_t **ptr, uint64_t addr, dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len); } - *ptr = dma_memory_map(as, addr, &len, DMA_DIRECTION_FROM_DEVICE); + *ptr = dma_memory_map(as, addr, &len, DMA_DIRECTION_FROM_DEVICE, + MEMTXATTRS_UNSPECIFIED); if (len < wanted && *ptr) { dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len); *ptr = NULL; @@ -939,7 +940,8 @@ static int ahci_populate_sglist(AHCIDevice *ad, QEMUSGList *sglist, /* map PRDT */ if (!(prdt = dma_memory_map(ad->hba->as, prdt_addr, &prdt_len, - DMA_DIRECTION_TO_DEVICE))){ + DMA_DIRECTION_TO_DEVICE, + MEMTXATTRS_UNSPECIFIED))){ trace_ahci_populate_sglist_no_map(ad->hba, ad->port_no); return -1; } @@ -1301,7 +1303,7 @@ static int handle_cmd(AHCIState *s, int port, uint8_t slot) tbl_addr = le64_to_cpu(cmd->tbl_addr); cmd_len = 0x80; cmd_fis = dma_memory_map(s->as, tbl_addr, &cmd_len, - DMA_DIRECTION_TO_DEVICE); + DMA_DIRECTION_TO_DEVICE, MEMTXATTRS_UNSPECIFIED); if (!cmd_fis) { trace_handle_cmd_badfis(s, port); return -1; diff --git a/hw/usb/libhw.c b/hw/usb/libhw.c index 9c33a1640f..f350eae443 100644 --- a/hw/usb/libhw.c +++ b/hw/usb/libhw.c @@ -36,7 +36,8 @@ int usb_packet_map(USBPacket *p, QEMUSGList *sgl) while (len) { dma_addr_t xlen = len; - mem = dma_memory_map(sgl->as, base, &xlen, dir); + mem = dma_memory_map(sgl->as, base, &xlen, dir, + MEMTXATTRS_UNSPECIFIED); if (!mem) { goto err; } diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index ea7c079fb0..e11a8a0dba 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1306,7 +1306,8 @@ static bool virtqueue_map_desc(VirtIODevice *vdev, unsigned int *p_num_sg, iov[num_sg].iov_base = dma_memory_map(vdev->dma_as, pa, &len, is_write ? DMA_DIRECTION_FROM_DEVICE : - DMA_DIRECTION_TO_DEVICE); + DMA_DIRECTION_TO_DEVICE, + MEMTXATTRS_UNSPECIFIED); if (!iov[num_sg].iov_base) { virtio_error(vdev, "virtio: bogus descriptor or out of resources"); goto out; @@ -1355,7 +1356,8 @@ static void virtqueue_map_iovec(VirtIODevice *vdev, struct iovec *sg, sg[i].iov_base = dma_memory_map(vdev->dma_as, addr[i], &len, is_write ? DMA_DIRECTION_FROM_DEVICE : - DMA_DIRECTION_TO_DEVICE); + DMA_DIRECTION_TO_DEVICE, + MEMTXATTRS_UNSPECIFIED); if (!sg[i].iov_base) { error_report("virtio: error trying to map MMIO memory"); exit(1); diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 4383f1c95e..1acefc2a4c 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -875,7 +875,8 @@ static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, { void *buf; - buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir); + buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir, + MEMTXATTRS_UNSPECIFIED); return buf; } diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index 522682bf38..97ff6f29f8 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -202,16 +202,17 @@ MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr, * @addr: address within that address space * @len: pointer to length of buffer; updated on return * @dir: indicates the transfer direction + * @attrs: memory attributes */ static inline void *dma_memory_map(AddressSpace *as, dma_addr_t addr, dma_addr_t *len, - DMADirection dir) + DMADirection dir, MemTxAttrs attrs) { hwaddr xlen = *len; void *p; p = address_space_map(as, addr, &xlen, dir == DMA_DIRECTION_FROM_DEVICE, - MEMTXATTRS_UNSPECIFIED); + attrs); *len = xlen; return p; } diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 5bf76fff6b..3c06a2fedd 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -143,7 +143,8 @@ static void dma_blk_cb(void *opaque, int ret) while (dbs->sg_cur_index < dbs->sg->nsg) { cur_addr = dbs->sg->sg[dbs->sg_cur_index].base + dbs->sg_cur_byte; cur_len = dbs->sg->sg[dbs->sg_cur_index].len - dbs->sg_cur_byte; - mem = dma_memory_map(dbs->sg->as, cur_addr, &cur_len, dbs->dir); + mem = dma_memory_map(dbs->sg->as, cur_addr, &cur_len, dbs->dir, + MEMTXATTRS_UNSPECIFIED); /* * Make reads deterministic in icount mode. Windows sometimes issues * disk read requests with overlapping SGs. It leads -- cgit 1.4.1 From c0ee1527358474c75067993d1bb233ad3a4ee081 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 16 Dec 2021 11:24:56 +0100 Subject: dma: Have dma_buf_rw() take a void pointer MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit DMA operations are run on any kind of buffer, not arrays of uint8_t. Convert dma_buf_rw() to take a void pointer argument to save us pointless casts to uint8_t *. Reviewed-by: Klaus Jensen Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211223115554.3155328-8-philmd@redhat.com> --- softmmu/dma-helpers.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'softmmu/dma-helpers.c') diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 3c06a2fedd..09e29997ee 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -294,9 +294,10 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk, } -static uint64_t dma_buf_rw(uint8_t *ptr, int32_t len, QEMUSGList *sg, +static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, DMADirection dir) { + uint8_t *ptr = buf; uint64_t resid; int sg_cur_index; -- cgit 1.4.1 From 5e468a36dcdd8fd5eb04282842b72967a29875e4 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 16 Dec 2021 11:27:23 +0100 Subject: dma: Have dma_buf_read() / dma_buf_write() take a void pointer MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit DMA operations are run on any kind of buffer, not arrays of uint8_t. Convert dma_buf_read/dma_buf_write functions to take a void pointer argument and save us pointless casts to uint8_t *. Remove this pointless casts in the megasas device model. Reviewed-by: Klaus Jensen Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211223115554.3155328-9-philmd@redhat.com> --- hw/scsi/megasas.c | 22 +++++++++++----------- include/sysemu/dma.h | 4 ++-- softmmu/dma-helpers.c | 4 ++-- 3 files changed, 15 insertions(+), 15 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index 14ec6d68bb..2dae33f675 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -848,7 +848,7 @@ static int megasas_ctrl_get_info(MegasasState *s, MegasasCmd *cmd) MFI_INFO_PDMIX_SATA | MFI_INFO_PDMIX_LD); - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -878,7 +878,7 @@ static int megasas_mfc_get_defaults(MegasasState *s, MegasasCmd *cmd) info.disable_preboot_cli = 1; info.cluster_disable = 1; - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -899,7 +899,7 @@ static int megasas_dcmd_get_bios_info(MegasasState *s, MegasasCmd *cmd) info.expose_all_drives = 1; } - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -910,7 +910,7 @@ static int megasas_dcmd_get_fw_time(MegasasState *s, MegasasCmd *cmd) fw_time = cpu_to_le64(megasas_fw_time()); - cmd->iov_size -= dma_buf_read((uint8_t *)&fw_time, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&fw_time, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -937,7 +937,7 @@ static int megasas_event_info(MegasasState *s, MegasasCmd *cmd) info.shutdown_seq_num = cpu_to_le32(s->shutdown_event); info.boot_seq_num = cpu_to_le32(s->boot_event); - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -1006,7 +1006,7 @@ static int megasas_dcmd_pd_get_list(MegasasState *s, MegasasCmd *cmd) info.size = cpu_to_le32(offset); info.count = cpu_to_le32(num_pd_disks); - cmd->iov_size -= dma_buf_read((uint8_t *)&info, offset, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, offset, &cmd->qsg); return MFI_STAT_OK; } @@ -1172,7 +1172,7 @@ static int megasas_dcmd_ld_get_list(MegasasState *s, MegasasCmd *cmd) info.ld_count = cpu_to_le32(num_ld_disks); trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks); - resid = dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + resid = dma_buf_read(&info, dcmd_size, &cmd->qsg); cmd->iov_size = dcmd_size - resid; return MFI_STAT_OK; } @@ -1221,7 +1221,7 @@ static int megasas_dcmd_ld_list_query(MegasasState *s, MegasasCmd *cmd) info.size = dcmd_size; trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks); - resid = dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + resid = dma_buf_read(&info, dcmd_size, &cmd->qsg); cmd->iov_size = dcmd_size - resid; return MFI_STAT_OK; } @@ -1390,7 +1390,7 @@ static int megasas_dcmd_cfg_read(MegasasState *s, MegasasCmd *cmd) ld_offset += sizeof(struct mfi_ld_config); } - cmd->iov_size -= dma_buf_read((uint8_t *)data, info->size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(data, info->size, &cmd->qsg); return MFI_STAT_OK; } @@ -1420,7 +1420,7 @@ static int megasas_dcmd_get_properties(MegasasState *s, MegasasCmd *cmd) info.ecc_bucket_leak_rate = cpu_to_le16(1440); info.expose_encl_devices = 1; - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -1465,7 +1465,7 @@ static int megasas_dcmd_set_properties(MegasasState *s, MegasasCmd *cmd) dcmd_size); return MFI_STAT_INVALID_PARAMETER; } - dma_buf_write((uint8_t *)&info, dcmd_size, &cmd->qsg); + dma_buf_write(&info, dcmd_size, &cmd->qsg); trace_megasas_dcmd_unsupported(cmd->index, cmd->iov_size); return MFI_STAT_OK; } diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index 97ff6f29f8..0d5b836013 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -302,8 +302,8 @@ BlockAIOCB *dma_blk_read(BlockBackend *blk, BlockAIOCB *dma_blk_write(BlockBackend *blk, QEMUSGList *sg, uint64_t offset, uint32_t align, BlockCompletionFunc *cb, void *opaque); -uint64_t dma_buf_read(uint8_t *ptr, int32_t len, QEMUSGList *sg); -uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg); +uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg); +uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg); void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, QEMUSGList *sg, enum BlockAcctType type); diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 09e29997ee..7f37548394 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -317,12 +317,12 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, return resid; } -uint64_t dma_buf_read(uint8_t *ptr, int32_t len, QEMUSGList *sg) +uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg) { return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE); } -uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg) +uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg) { return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE); } -- cgit 1.4.1 From 959384e74e1b508acc3af6e806b3d7b87335fc2a Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Wed, 15 Dec 2021 22:59:46 +0100 Subject: dma: Let dma_buf_rw() take MemTxAttrs argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Let devices specify transaction attributes when calling dma_buf_rw(). Keep the default MEMTXATTRS_UNSPECIFIED in the 2 callers. Reviewed-by: Klaus Jensen Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211223115554.3155328-11-philmd@redhat.com> --- softmmu/dma-helpers.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 7f37548394..fa81d2b386 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -295,7 +295,7 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk, static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, - DMADirection dir) + DMADirection dir, MemTxAttrs attrs) { uint8_t *ptr = buf; uint64_t resid; @@ -307,8 +307,7 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, while (len > 0) { ScatterGatherEntry entry = sg->sg[sg_cur_index++]; int32_t xfer = MIN(len, entry.len); - dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, - MEMTXATTRS_UNSPECIFIED); + dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, attrs); ptr += xfer; len -= xfer; resid -= xfer; @@ -319,12 +318,14 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE); + return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE, + MEMTXATTRS_UNSPECIFIED); } uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE); + return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE, + MEMTXATTRS_UNSPECIFIED); } void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, -- cgit 1.4.1 From 392e48af3468d7f8e49db33fdc9e28b5f99276ce Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Wed, 15 Dec 2021 23:02:21 +0100 Subject: dma: Let dma_buf_write() take MemTxAttrs argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Let devices specify transaction attributes when calling dma_buf_write(). Keep the default MEMTXATTRS_UNSPECIFIED in the few callers. Reviewed-by: Klaus Jensen Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211223115554.3155328-12-philmd@redhat.com> --- hw/ide/ahci.c | 6 ++++-- hw/nvme/ctrl.c | 3 ++- hw/scsi/megasas.c | 2 +- hw/scsi/scsi-bus.c | 2 +- include/sysemu/dma.h | 2 +- softmmu/dma-helpers.c | 5 ++--- 6 files changed, 11 insertions(+), 9 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 8e77ddb660..079d2977f2 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -1381,8 +1381,10 @@ static void ahci_pio_transfer(const IDEDMA *dma) has_sglist ? "" : "o"); if (has_sglist && size) { + const MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED; + if (is_write) { - dma_buf_write(s->data_ptr, size, &s->sg); + dma_buf_write(s->data_ptr, size, &s->sg, attrs); } else { dma_buf_read(s->data_ptr, size, &s->sg); } @@ -1479,7 +1481,7 @@ static int ahci_dma_rw_buf(const IDEDMA *dma, bool is_write) if (is_write) { dma_buf_read(p, l, &s->sg); } else { - dma_buf_write(p, l, &s->sg); + dma_buf_write(p, l, &s->sg, MEMTXATTRS_UNSPECIFIED); } /* free sglist, update byte count */ diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 5f573c417b..e1a531d5d6 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -1146,10 +1146,11 @@ static uint16_t nvme_tx(NvmeCtrl *n, NvmeSg *sg, uint8_t *ptr, uint32_t len, assert(sg->flags & NVME_SG_ALLOC); if (sg->flags & NVME_SG_DMA) { + const MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED; uint64_t residual; if (dir == NVME_TX_DIRECTION_TO_DEVICE) { - residual = dma_buf_write(ptr, len, &sg->qsg); + residual = dma_buf_write(ptr, len, &sg->qsg, attrs); } else { residual = dma_buf_read(ptr, len, &sg->qsg); } diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index 2dae33f675..79fd14c5a3 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -1465,7 +1465,7 @@ static int megasas_dcmd_set_properties(MegasasState *s, MegasasCmd *cmd) dcmd_size); return MFI_STAT_INVALID_PARAMETER; } - dma_buf_write(&info, dcmd_size, &cmd->qsg); + dma_buf_write(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); trace_megasas_dcmd_unsupported(cmd->index, cmd->iov_size); return MFI_STAT_OK; } diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c index 77325d8cc7..64a506a397 100644 --- a/hw/scsi/scsi-bus.c +++ b/hw/scsi/scsi-bus.c @@ -1423,7 +1423,7 @@ void scsi_req_data(SCSIRequest *req, int len) if (req->cmd.mode == SCSI_XFER_FROM_DEV) { req->resid = dma_buf_read(buf, len, req->sg); } else { - req->resid = dma_buf_write(buf, len, req->sg); + req->resid = dma_buf_write(buf, len, req->sg, MEMTXATTRS_UNSPECIFIED); } scsi_req_continue(req); } diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index 0d5b836013..e3dd74a9c4 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -303,7 +303,7 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk, QEMUSGList *sg, uint64_t offset, uint32_t align, BlockCompletionFunc *cb, void *opaque); uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg); -uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg); +uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs); void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, QEMUSGList *sg, enum BlockAcctType type); diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index fa81d2b386..2f1a241b81 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -322,10 +322,9 @@ uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg) MEMTXATTRS_UNSPECIFIED); } -uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg) +uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE, - MEMTXATTRS_UNSPECIFIED); + return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE, attrs); } void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, -- cgit 1.4.1 From 1e5a3f8b2a976054da96cbbb9de6cbac7c2efb79 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Wed, 15 Dec 2021 23:29:52 +0100 Subject: dma: Let dma_buf_read() take MemTxAttrs argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Let devices specify transaction attributes when calling dma_buf_read(). Keep the default MEMTXATTRS_UNSPECIFIED in the few callers. Reviewed-by: Klaus Jensen Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211223115554.3155328-13-philmd@redhat.com> --- hw/ide/ahci.c | 4 ++-- hw/nvme/ctrl.c | 2 +- hw/scsi/megasas.c | 24 ++++++++++++------------ hw/scsi/scsi-bus.c | 2 +- include/sysemu/dma.h | 2 +- softmmu/dma-helpers.c | 5 ++--- 6 files changed, 19 insertions(+), 20 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 079d2977f2..205dfdc662 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -1386,7 +1386,7 @@ static void ahci_pio_transfer(const IDEDMA *dma) if (is_write) { dma_buf_write(s->data_ptr, size, &s->sg, attrs); } else { - dma_buf_read(s->data_ptr, size, &s->sg); + dma_buf_read(s->data_ptr, size, &s->sg, attrs); } } @@ -1479,7 +1479,7 @@ static int ahci_dma_rw_buf(const IDEDMA *dma, bool is_write) } if (is_write) { - dma_buf_read(p, l, &s->sg); + dma_buf_read(p, l, &s->sg, MEMTXATTRS_UNSPECIFIED); } else { dma_buf_write(p, l, &s->sg, MEMTXATTRS_UNSPECIFIED); } diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index e1a531d5d6..462f79a1f6 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -1152,7 +1152,7 @@ static uint16_t nvme_tx(NvmeCtrl *n, NvmeSg *sg, uint8_t *ptr, uint32_t len, if (dir == NVME_TX_DIRECTION_TO_DEVICE) { residual = dma_buf_write(ptr, len, &sg->qsg, attrs); } else { - residual = dma_buf_read(ptr, len, &sg->qsg); + residual = dma_buf_read(ptr, len, &sg->qsg, attrs); } if (unlikely(residual)) { diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index 79fd14c5a3..091a350e05 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -848,7 +848,7 @@ static int megasas_ctrl_get_info(MegasasState *s, MegasasCmd *cmd) MFI_INFO_PDMIX_SATA | MFI_INFO_PDMIX_LD); - cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } @@ -878,7 +878,7 @@ static int megasas_mfc_get_defaults(MegasasState *s, MegasasCmd *cmd) info.disable_preboot_cli = 1; info.cluster_disable = 1; - cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } @@ -899,7 +899,7 @@ static int megasas_dcmd_get_bios_info(MegasasState *s, MegasasCmd *cmd) info.expose_all_drives = 1; } - cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } @@ -910,7 +910,7 @@ static int megasas_dcmd_get_fw_time(MegasasState *s, MegasasCmd *cmd) fw_time = cpu_to_le64(megasas_fw_time()); - cmd->iov_size -= dma_buf_read(&fw_time, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&fw_time, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } @@ -937,7 +937,7 @@ static int megasas_event_info(MegasasState *s, MegasasCmd *cmd) info.shutdown_seq_num = cpu_to_le32(s->shutdown_event); info.boot_seq_num = cpu_to_le32(s->boot_event); - cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } @@ -1006,7 +1006,7 @@ static int megasas_dcmd_pd_get_list(MegasasState *s, MegasasCmd *cmd) info.size = cpu_to_le32(offset); info.count = cpu_to_le32(num_pd_disks); - cmd->iov_size -= dma_buf_read(&info, offset, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, offset, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } @@ -1100,7 +1100,7 @@ static int megasas_pd_get_info_submit(SCSIDevice *sdev, int lun, info->connected_port_bitmap = 0x1; info->device_speed = 1; info->link_speed = 1; - resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg); + resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); g_free(cmd->iov_buf); cmd->iov_size = dcmd_size - resid; cmd->iov_buf = NULL; @@ -1172,7 +1172,7 @@ static int megasas_dcmd_ld_get_list(MegasasState *s, MegasasCmd *cmd) info.ld_count = cpu_to_le32(num_ld_disks); trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks); - resid = dma_buf_read(&info, dcmd_size, &cmd->qsg); + resid = dma_buf_read(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); cmd->iov_size = dcmd_size - resid; return MFI_STAT_OK; } @@ -1221,7 +1221,7 @@ static int megasas_dcmd_ld_list_query(MegasasState *s, MegasasCmd *cmd) info.size = dcmd_size; trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks); - resid = dma_buf_read(&info, dcmd_size, &cmd->qsg); + resid = dma_buf_read(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); cmd->iov_size = dcmd_size - resid; return MFI_STAT_OK; } @@ -1271,7 +1271,7 @@ static int megasas_ld_get_info_submit(SCSIDevice *sdev, int lun, info->ld_config.span[0].num_blocks = info->size; info->ld_config.span[0].array_ref = cpu_to_le16(sdev_id); - resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg); + resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); g_free(cmd->iov_buf); cmd->iov_size = dcmd_size - resid; cmd->iov_buf = NULL; @@ -1390,7 +1390,7 @@ static int megasas_dcmd_cfg_read(MegasasState *s, MegasasCmd *cmd) ld_offset += sizeof(struct mfi_ld_config); } - cmd->iov_size -= dma_buf_read(data, info->size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(data, info->size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } @@ -1420,7 +1420,7 @@ static int megasas_dcmd_get_properties(MegasasState *s, MegasasCmd *cmd) info.ecc_bucket_leak_rate = cpu_to_le16(1440); info.expose_encl_devices = 1; - cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg, MEMTXATTRS_UNSPECIFIED); return MFI_STAT_OK; } diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c index 64a506a397..2b5e9dca31 100644 --- a/hw/scsi/scsi-bus.c +++ b/hw/scsi/scsi-bus.c @@ -1421,7 +1421,7 @@ void scsi_req_data(SCSIRequest *req, int len) buf = scsi_req_get_buf(req); if (req->cmd.mode == SCSI_XFER_FROM_DEV) { - req->resid = dma_buf_read(buf, len, req->sg); + req->resid = dma_buf_read(buf, len, req->sg, MEMTXATTRS_UNSPECIFIED); } else { req->resid = dma_buf_write(buf, len, req->sg, MEMTXATTRS_UNSPECIFIED); } diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index e3dd74a9c4..fd8f16003d 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -302,7 +302,7 @@ BlockAIOCB *dma_blk_read(BlockBackend *blk, BlockAIOCB *dma_blk_write(BlockBackend *blk, QEMUSGList *sg, uint64_t offset, uint32_t align, BlockCompletionFunc *cb, void *opaque); -uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg); +uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs); uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs); void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 2f1a241b81..a391773c29 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -316,10 +316,9 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, return resid; } -uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg) +uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE, - MEMTXATTRS_UNSPECIFIED); + return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE, attrs); } uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs) -- cgit 1.4.1 From 292e13142d277c15bdd68331abc607e46628b7e1 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Wed, 15 Dec 2021 23:38:52 +0100 Subject: dma: Let dma_buf_rw() propagate MemTxResult MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit dma_memory_rw() returns a MemTxResult type. Do not discard it, return it to the caller. Since dma_buf_rw() was previously returning the QEMUSGList size not consumed, add an extra argument where this size can be stored. Update the 2 callers. Reviewed-by: Klaus Jensen Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211223115554.3155328-14-philmd@redhat.com> --- softmmu/dma-helpers.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'softmmu/dma-helpers.c') diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index a391773c29..b0be156479 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -294,12 +294,14 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk, } -static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, - DMADirection dir, MemTxAttrs attrs) +static MemTxResult dma_buf_rw(void *buf, int32_t len, uint64_t *residp, + QEMUSGList *sg, DMADirection dir, + MemTxAttrs attrs) { uint8_t *ptr = buf; uint64_t resid; int sg_cur_index; + MemTxResult res = MEMTX_OK; resid = sg->size; sg_cur_index = 0; @@ -307,23 +309,34 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, while (len > 0) { ScatterGatherEntry entry = sg->sg[sg_cur_index++]; int32_t xfer = MIN(len, entry.len); - dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, attrs); + res |= dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, attrs); ptr += xfer; len -= xfer; resid -= xfer; } - return resid; + if (residp) { + *residp = resid; + } + return res; } uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE, attrs); + uint64_t resid; + + dma_buf_rw(ptr, len, &resid, sg, DMA_DIRECTION_FROM_DEVICE, attrs); + + return resid; } uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE, attrs); + uint64_t resid; + + dma_buf_rw(ptr, len, &resid, sg, DMA_DIRECTION_TO_DEVICE, attrs); + + return resid; } void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, -- cgit 1.4.1