From 0ea32f34ce08e10c3d715cfa1427a23fb7989196 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Fri, 4 Sep 2020 14:41:28 +0200 Subject: [PATCH] block/nvme: Group controller registers in NVMeRegs structure MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We want to use the NvmeBar structure from "block/nvme.h" in the next commit. As a preliminary step, group all the NVMe controller registers in the 'ctrl' field, keeping the doorbells registers out of it. Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20200904124130.583838-2-philmd@redhat.com> Reviewed-by: Klaus Jensen Reviewed-by: Fam Zheng Signed-off-by: Kevin Wolf --- block/nvme.c | 48 +++++++++++++++++++++++++----------------------- 1 file changed, 25 insertions(+), 23 deletions(-) diff --git a/block/nvme.c b/block/nvme.c index 24e6e7f086..c9c3fc02fe 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -83,21 +83,23 @@ typedef struct { /* Memory mapped registers */ typedef volatile struct { - uint64_t cap; - uint32_t vs; - uint32_t intms; - uint32_t intmc; - uint32_t cc; - uint32_t reserved0; - uint32_t csts; - uint32_t nssr; - uint32_t aqa; - uint64_t asq; - uint64_t acq; - uint32_t cmbloc; - uint32_t cmbsz; - uint8_t reserved1[0xec0]; - uint8_t cmd_set_specfic[0x100]; + struct { + uint64_t cap; + uint32_t vs; + uint32_t intms; + uint32_t intmc; + uint32_t cc; + uint32_t reserved0; + uint32_t csts; + uint32_t nssr; + uint32_t aqa; + uint64_t asq; + uint64_t acq; + uint32_t cmbloc; + uint32_t cmbsz; + uint8_t reserved1[0xec0]; + uint8_t cmd_set_specfic[0x100]; + } ctrl; uint32_t doorbells[]; } NVMeRegs; @@ -734,7 +736,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, /* Perform initialize sequence as described in NVMe spec "7.6.1 * Initialization". */ - cap = le64_to_cpu(s->regs->cap); + cap = le64_to_cpu(s->regs->ctrl.cap); if (!(cap & (1ULL << 37))) { error_setg(errp, "Device doesn't support NVMe command set"); ret = -EINVAL; @@ -747,10 +749,10 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, timeout_ms = MIN(500 * ((cap >> 24) & 0xFF), 30000); /* Reset device to get a clean state. */ - s->regs->cc = cpu_to_le32(le32_to_cpu(s->regs->cc) & 0xFE); + s->regs->ctrl.cc = cpu_to_le32(le32_to_cpu(s->regs->ctrl.cc) & 0xFE); /* Wait for CSTS.RDY = 0. */ deadline = qemu_clock_get_ns(QEMU_CLOCK_REALTIME) + timeout_ms * SCALE_MS; - while (le32_to_cpu(s->regs->csts) & 0x1) { + while (le32_to_cpu(s->regs->ctrl.csts) & 0x1) { if (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) > deadline) { error_setg(errp, "Timeout while waiting for device to reset (%" PRId64 " ms)", @@ -771,18 +773,18 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, } s->nr_queues = 1; QEMU_BUILD_BUG_ON(NVME_QUEUE_SIZE & 0xF000); - s->regs->aqa = cpu_to_le32((NVME_QUEUE_SIZE << 16) | NVME_QUEUE_SIZE); - s->regs->asq = cpu_to_le64(s->queues[INDEX_ADMIN]->sq.iova); - s->regs->acq = cpu_to_le64(s->queues[INDEX_ADMIN]->cq.iova); + s->regs->ctrl.aqa = cpu_to_le32((NVME_QUEUE_SIZE << 16) | NVME_QUEUE_SIZE); + s->regs->ctrl.asq = cpu_to_le64(s->queues[INDEX_ADMIN]->sq.iova); + s->regs->ctrl.acq = cpu_to_le64(s->queues[INDEX_ADMIN]->cq.iova); /* After setting up all control registers we can enable device now. */ - s->regs->cc = cpu_to_le32((ctz32(NVME_CQ_ENTRY_BYTES) << 20) | + s->regs->ctrl.cc = cpu_to_le32((ctz32(NVME_CQ_ENTRY_BYTES) << 20) | (ctz32(NVME_SQ_ENTRY_BYTES) << 16) | 0x1); /* Wait for CSTS.RDY = 1. */ now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); deadline = now + timeout_ms * 1000000; - while (!(le32_to_cpu(s->regs->csts) & 0x1)) { + while (!(le32_to_cpu(s->regs->ctrl.csts) & 0x1)) { if (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) > deadline) { error_setg(errp, "Timeout while waiting for device to start (%" PRId64 " ms)", -- 2.11.0