diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/hw-block-nvme-refactor-nvme_addr_read.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/hw-block-nvme-refactor-nvme_addr_read.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/hw-block-nvme-refactor-nvme_addr_read.patch b/meta/recipes-devtools/qemu/qemu/hw-block-nvme-refactor-nvme_addr_read.patch new file mode 100644 index 0000000000..66ada52efb --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/hw-block-nvme-refactor-nvme_addr_read.patch @@ -0,0 +1,55 @@ +From 55428706d5b0b8889b8e009eac77137bb556a4f0 Mon Sep 17 00:00:00 2001 +From: Klaus Jensen <k.jensen@samsung.com> +Date: Tue, 9 Jun 2020 21:03:17 +0200 +Subject: [PATCH 1/2] hw/block/nvme: refactor nvme_addr_read +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Pull the controller memory buffer check to its own function. The check +will be used on its own in later patches. + +Signed-off-by: Klaus Jensen <k.jensen@samsung.com> +Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> +Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> +Reviewed-by: Keith Busch <kbusch@kernel.org> +Message-Id: <20200609190333.59390-7-its@irrelevant.dk> +Signed-off-by: Kevin Wolf <kwolf@redhat.com> +--- + hw/block/nvme.c | 16 ++++++++++++---- + 1 file changed, 12 insertions(+), 4 deletions(-) + +diff --git a/hw/block/nvme.c b/hw/block/nvme.c +index 12d8254..e6f24a6 100644 +--- a/hw/block/nvme.c ++++ b/hw/block/nvme.c +@@ -52,14 +52,22 @@ + + static void nvme_process_sq(void *opaque); + ++static bool nvme_addr_is_cmb(NvmeCtrl *n, hwaddr addr) ++{ ++ hwaddr low = n->ctrl_mem.addr; ++ hwaddr hi = n->ctrl_mem.addr + int128_get64(n->ctrl_mem.size); ++ ++ return addr >= low && addr < hi; ++} ++ + static void nvme_addr_read(NvmeCtrl *n, hwaddr addr, void *buf, int size) + { +- if (n->cmbsz && addr >= n->ctrl_mem.addr && +- addr < (n->ctrl_mem.addr + int128_get64(n->ctrl_mem.size))) { ++ if (n->cmbsz && nvme_addr_is_cmb(n, addr)) { + memcpy(buf, (void *)&n->cmbuf[addr - n->ctrl_mem.addr], size); +- } else { +- pci_dma_read(&n->parent_obj, addr, buf, size); ++ return; + } ++ ++ pci_dma_read(&n->parent_obj, addr, buf, size); + } + + static int nvme_check_sqid(NvmeCtrl *n, uint16_t sqid) +-- +1.8.3.1 + |