diff options
Diffstat (limited to 'config/grub/default/patches/0006-nvme')
| -rw-r--r-- | config/grub/default/patches/0006-nvme/0001-Add-native-NVMe-driver-based-on-SeaBIOS.patch | 1074 |
1 files changed, 0 insertions, 1074 deletions
diff --git a/config/grub/default/patches/0006-nvme/0001-Add-native-NVMe-driver-based-on-SeaBIOS.patch b/config/grub/default/patches/0006-nvme/0001-Add-native-NVMe-driver-based-on-SeaBIOS.patch deleted file mode 100644 index 4345ebae..00000000 --- a/config/grub/default/patches/0006-nvme/0001-Add-native-NVMe-driver-based-on-SeaBIOS.patch +++ /dev/null @@ -1,1074 +0,0 @@ -From 708c0092d44aec6409e0ecc1925cdbb3b76c6dfd Mon Sep 17 00:00:00 2001 -From: Mate Kukri <km@mkukri.xyz> -Date: Mon, 20 May 2024 11:43:35 +0100 -Subject: [PATCH 1/1] Add native NVMe driver based on SeaBIOS - -Tested to successfully boot Debian on QEMU and OptiPlex 3050. - -Signed-off-by: Mate Kukri <km@mkukri.xyz> ---- - Makefile.am | 2 +- - grub-core/Makefile.core.def | 6 + - grub-core/commands/nativedisk.c | 1 + - grub-core/disk/nvme-int.h | 208 +++++++++ - grub-core/disk/nvme.c | 781 ++++++++++++++++++++++++++++++++ - include/grub/disk.h | 1 + - 6 files changed, 998 insertions(+), 1 deletion(-) - create mode 100644 grub-core/disk/nvme-int.h - create mode 100644 grub-core/disk/nvme.c - -diff --git a/Makefile.am b/Makefile.am -index 43635d5ff..2c86dbbf6 100644 ---- a/Makefile.am -+++ b/Makefile.am -@@ -434,7 +434,7 @@ if COND_i386_coreboot - FS_PAYLOAD_MODULES ?= $(shell cat grub-core/fs.lst) - default_payload.elf: grub-mkstandalone grub-mkimage FORCE - test -f $@ && rm $@ || true -- pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O i386-coreboot -o $@ --modules='ahci pata ehci uhci ohci usb_keyboard usbms part_msdos ext2 fat at_keyboard part_gpt usbserial_usbdebug cbfs' --install-modules='ls linux search configfile normal cbtime cbls memrw iorw minicmd lsmmap lspci halt reboot hexdump pcidump regexp setpci lsacpi chain test serial multiboot cbmemc linux16 gzio echo help syslinuxcfg xnu $(FS_PAYLOAD_MODULES) password_pbkdf2 $(EXTRA_PAYLOAD_MODULES)' --fonts= --themes= --locales= -d grub-core/ /boot/grub/grub.cfg=$(srcdir)/coreboot.cfg -+ pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O i386-coreboot -o $@ --modules='ahci pata nvme ehci uhci ohci usb_keyboard usbms part_msdos ext2 fat at_keyboard part_gpt usbserial_usbdebug cbfs' --install-modules='ls linux search configfile normal cbtime cbls memrw iorw minicmd lsmmap lspci halt reboot hexdump pcidump regexp setpci lsacpi chain test serial multiboot cbmemc linux16 gzio echo help syslinuxcfg xnu $(FS_PAYLOAD_MODULES) password_pbkdf2 $(EXTRA_PAYLOAD_MODULES)' --fonts= --themes= --locales= -d grub-core/ /boot/grub/grub.cfg=$(srcdir)/coreboot.cfg - endif - - endif -diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def -index 560c66447..d3bf9f1c5 100644 ---- a/grub-core/Makefile.core.def -+++ b/grub-core/Makefile.core.def -@@ -2607,3 +2607,9 @@ module = { - efi = commands/bli.c; - enable = efi; - }; -+ -+module = { -+ name = nvme; -+ common = disk/nvme.c; -+ enable = pci; -+}; -diff --git a/grub-core/commands/nativedisk.c b/grub-core/commands/nativedisk.c -index 6806bff9c..fd68a513e 100644 ---- a/grub-core/commands/nativedisk.c -+++ b/grub-core/commands/nativedisk.c -@@ -78,6 +78,7 @@ get_uuid (const char *name, char **uuid, int getnative) - case GRUB_DISK_DEVICE_ATA_ID: - case GRUB_DISK_DEVICE_SCSI_ID: - case GRUB_DISK_DEVICE_XEN: -+ case GRUB_DISK_DEVICE_NVME_ID: - if (getnative) - break; - /* FALLTHROUGH */ -diff --git a/grub-core/disk/nvme-int.h b/grub-core/disk/nvme-int.h -new file mode 100644 -index 000000000..1295b58aa ---- /dev/null -+++ b/grub-core/disk/nvme-int.h -@@ -0,0 +1,208 @@ -+// NVMe datastructures and constants -+// -+// Copyright 2017 Amazon.com, Inc. or its affiliates. -+// -+// This file may be distributed under the terms of the GNU LGPLv3 license. -+ -+#ifndef __NVME_INT_H -+#define __NVME_INT_H -+ -+#include <grub/types.h> -+ -+/* Data structures */ -+ -+/* The register file of a NVMe host controller. This struct follows the naming -+ scheme in the NVMe specification. */ -+struct nvme_reg { -+ grub_uint64_t cap; /* controller capabilities */ -+ grub_uint32_t vs; /* version */ -+ grub_uint32_t intms; /* interrupt mask set */ -+ grub_uint32_t intmc; /* interrupt mask clear */ -+ grub_uint32_t cc; /* controller configuration */ -+ grub_uint32_t _res0; -+ grub_uint32_t csts; /* controller status */ -+ grub_uint32_t _res1; -+ grub_uint32_t aqa; /* admin queue attributes */ -+ grub_uint64_t asq; /* admin submission queue base address */ -+ grub_uint64_t acq; /* admin completion queue base address */ -+}; -+ -+/* Submission queue entry */ -+struct nvme_sqe { -+ union { -+ grub_uint32_t dword[16]; -+ struct { -+ grub_uint32_t cdw0; /* Command DWORD 0 */ -+ grub_uint32_t nsid; /* Namespace ID */ -+ grub_uint64_t _res0; -+ grub_uint64_t mptr; /* metadata ptr */ -+ -+ grub_uint64_t dptr_prp1; -+ grub_uint64_t dptr_prp2; -+ }; -+ }; -+}; -+ -+/* Completion queue entry */ -+struct nvme_cqe { -+ union { -+ grub_uint32_t dword[4]; -+ struct { -+ grub_uint32_t cdw0; -+ grub_uint32_t _res0; -+ grub_uint16_t sq_head; -+ grub_uint16_t sq_id; -+ grub_uint16_t cid; -+ grub_uint16_t status; -+ }; -+ }; -+}; -+ -+/* The common part of every submission or completion queue. */ -+struct nvme_queue { -+ grub_uint32_t *dbl; /* doorbell */ -+ grub_uint16_t mask; /* length - 1 */ -+}; -+ -+struct nvme_cq { -+ struct nvme_queue common; -+ struct nvme_cqe *cqe; -+ -+ /* We have read upto (but not including) this entry in the queue. */ -+ grub_uint16_t head; -+ -+ /* The current phase bit the controller uses to indicate that it has written -+ a new entry. This is inverted after each wrap. */ -+ unsigned phase : 1; -+}; -+ -+struct nvme_sq { -+ struct nvme_queue common; -+ struct nvme_sqe *sqe; -+ -+ /* Corresponding completion queue. We only support a single SQ per CQ. */ -+ struct nvme_cq *cq; -+ -+ /* The last entry the controller has fetched. */ -+ grub_uint16_t head; -+ -+ /* The last value we have written to the tail doorbell. */ -+ grub_uint16_t tail; -+}; -+ -+struct nvme_ctrl { -+ grub_pci_device_t pci; -+ struct nvme_reg volatile *reg; -+ -+ grub_uint32_t ctrlnum; -+ -+ grub_uint32_t doorbell_stride; /* in bytes */ -+ -+ struct nvme_sq admin_sq; -+ struct nvme_cq admin_cq; -+ -+ grub_uint32_t ns_count; -+ -+ struct nvme_sq io_sq; -+ struct nvme_cq io_cq; -+}; -+ -+struct nvme_namespace { -+ struct nvme_namespace *next; -+ struct nvme_namespace **prev; -+ -+ char *devname; -+ -+ grub_uint32_t nsnum; -+ -+ struct nvme_ctrl *ctrl; -+ -+ grub_uint32_t ns_id; -+ -+ grub_uint64_t lba_count; /* The total amount of sectors. */ -+ -+ grub_uint32_t block_size; -+ grub_uint32_t metadata_size; -+ grub_uint32_t max_req_size; -+}; -+ -+/* Data structures for NVMe admin identify commands */ -+ -+struct nvme_identify_ctrl { -+ grub_uint16_t vid; -+ grub_uint16_t ssvid; -+ char sn[20]; -+ char mn[40]; -+ char fr[8]; -+ -+ grub_uint8_t rab; -+ grub_uint8_t ieee[3]; -+ grub_uint8_t cmic; -+ grub_uint8_t mdts; -+ -+ char _boring[516 - 78]; -+ -+ grub_uint32_t nn; /* number of namespaces */ -+}; -+ -+struct nvme_identify_ns_list { -+ grub_uint32_t ns_id[1024]; -+}; -+ -+struct nvme_lba_format { -+ grub_uint16_t ms; -+ grub_uint8_t lbads; -+ grub_uint8_t rp; -+}; -+ -+struct nvme_identify_ns { -+ grub_uint64_t nsze; -+ grub_uint64_t ncap; -+ grub_uint64_t nuse; -+ grub_uint8_t nsfeat; -+ grub_uint8_t nlbaf; -+ grub_uint8_t flbas; -+ -+ char _boring[128 - 27]; -+ -+ struct nvme_lba_format lbaf[16]; -+}; -+ -+union nvme_identify { -+ struct nvme_identify_ns ns; -+ struct nvme_identify_ctrl ctrl; -+ struct nvme_identify_ns_list ns_list; -+}; -+ -+/* NVMe constants */ -+ -+#define NVME_CAP_CSS_NVME (1ULL << 37) -+ -+#define NVME_CSTS_FATAL (1U << 1) -+#define NVME_CSTS_RDY (1U << 0) -+ -+#define NVME_CC_EN (1U << 0) -+ -+#define NVME_SQE_OPC_ADMIN_CREATE_IO_SQ 1U -+#define NVME_SQE_OPC_ADMIN_CREATE_IO_CQ 5U -+#define NVME_SQE_OPC_ADMIN_IDENTIFY 6U -+ -+#define NVME_SQE_OPC_IO_WRITE 1U -+#define NVME_SQE_OPC_IO_READ 2U -+ -+#define NVME_ADMIN_IDENTIFY_CNS_ID_NS 0U -+#define NVME_ADMIN_IDENTIFY_CNS_ID_CTRL 1U -+#define NVME_ADMIN_IDENTIFY_CNS_GET_NS_LIST 2U -+ -+#define NVME_CQE_DW3_P (1U << 16) -+ -+#define NVME_PAGE_SIZE 4096 -+#define NVME_PAGE_MASK ~(NVME_PAGE_SIZE - 1) -+ -+/* Length for the queue entries. */ -+#define NVME_SQE_SIZE_LOG 6 -+#define NVME_CQE_SIZE_LOG 4 -+ -+#endif -+ -+/* EOF */ -diff --git a/grub-core/disk/nvme.c b/grub-core/disk/nvme.c -new file mode 100644 -index 000000000..093237c70 ---- /dev/null -+++ b/grub-core/disk/nvme.c -@@ -0,0 +1,781 @@ -+// Low level NVMe disk access -+// -+// Based on SeaBIOS NVMe driver - Copyright 2017 Amazon.com, Inc. or its affiliates. -+// Port to GRUB2 done by Mate Kukri -+// -+// This file may be distributed under the terms of the GNU LGPLv3 license. -+ -+#include <grub/disk.h> -+#include <grub/dl.h> -+#include <grub/pci.h> -+#include "nvme-int.h" -+ -+GRUB_MOD_LICENSE ("GPLv3"); /* LGPLv3 in reality but it is GPLv3 compatible */ -+ -+static grub_uint32_t grub_nvme_ctrlcnt; -+static grub_uint32_t grub_nvme_nscnt; -+ -+static struct nvme_namespace *grub_nvme_namespaces; -+ -+// Page aligned "dma bounce buffer" of size NVME_PAGE_SIZE -+static void *nvme_dma_buffer; -+ -+static void * -+zalloc_page_aligned(grub_uint32_t size) -+{ -+ void *res = grub_memalign(NVME_PAGE_SIZE, size); -+ if (res) grub_memset(res, 0, size); -+ return res; -+} -+ -+static void -+nvme_init_queue_common(struct nvme_ctrl *ctrl, struct nvme_queue *q, grub_uint16_t q_idx, -+ grub_uint16_t length) -+{ -+ grub_memset(q, 0, sizeof(*q)); -+ q->dbl = (grub_uint32_t *)((char *)ctrl->reg + 0x1000 + q_idx * ctrl->doorbell_stride); -+ grub_dprintf("nvme", " q %p q_idx %u dbl %p\n", q, q_idx, q->dbl); -+ q->mask = length - 1; -+} -+ -+static int -+nvme_init_sq(struct nvme_ctrl *ctrl, struct nvme_sq *sq, grub_uint16_t q_idx, grub_uint16_t length, -+ struct nvme_cq *cq) -+{ -+ nvme_init_queue_common(ctrl, &sq->common, q_idx, length); -+ sq->sqe = zalloc_page_aligned(sizeof(*sq->sqe) * length); -+ -+ if (!sq->sqe) { -+ return -1; -+ } -+ -+ grub_dprintf("nvme", "sq %p q_idx %u sqe %p\n", sq, q_idx, sq->sqe); -+ sq->cq = cq; -+ sq->head = 0; -+ sq->tail = 0; -+ -+ return 0; -+} -+ -+static int -+nvme_init_cq(struct nvme_ctrl *ctrl, struct nvme_cq *cq, grub_uint16_t q_idx, grub_uint16_t length) -+{ -+ nvme_init_queue_common(ctrl, &cq->common, q_idx, length); -+ cq->cqe = zalloc_page_aligned(sizeof(*cq->cqe) * length); -+ if (!cq->cqe) { -+ return -1; -+ } -+ -+ cq->head = 0; -+ -+ /* All CQE phase bits are initialized to zero. This means initially we wait -+ for the host controller to set these to 1. */ -+ cq->phase = 1; -+ -+ return 0; -+} -+ -+static int -+nvme_poll_cq(struct nvme_cq *cq) -+{ -+ grub_uint32_t dw3 = *(volatile grub_uint32_t *) &cq->cqe[cq->head].dword[3]; -+ return (!!(dw3 & NVME_CQE_DW3_P) == cq->phase); -+} -+ -+static int -+nvme_is_cqe_success(struct nvme_cqe const *cqe) -+{ -+ return ((cqe->status >> 1) & 0xFF) == 0; -+} -+ -+static struct nvme_cqe -+nvme_error_cqe(void) -+{ -+ struct nvme_cqe r; -+ -+ /* 0xFF is a vendor specific status code != success. Should be okay for -+ indicating failure. */ -+ grub_memset(&r, 0xFF, sizeof(r)); -+ return r; -+} -+ -+static struct nvme_cqe -+nvme_consume_cqe(struct nvme_sq *sq) -+{ -+ struct nvme_cq *cq = sq->cq; -+ -+ if (!nvme_poll_cq(cq)) { -+ /* Cannot consume a completion queue entry, if there is none ready. */ -+ return nvme_error_cqe(); -+ } -+ -+ struct nvme_cqe *cqe = &cq->cqe[cq->head]; -+ grub_uint16_t cq_next_head = (cq->head + 1) & cq->common.mask; -+ grub_dprintf("nvme", "cq %p head %u -> %u\n", cq, cq->head, cq_next_head); -+ if (cq_next_head < cq->head) { -+ grub_dprintf("nvme", "cq %p wrap\n", cq); -+ cq->phase = ~cq->phase; -+ } -+ cq->head = cq_next_head; -+ -+ /* Update the submission queue head. */ -+ if (cqe->sq_head != sq->head) { -+ sq->head = cqe->sq_head; -+ grub_dprintf("nvme", "sq %p advanced to %u\n", sq, cqe->sq_head); -+ } -+ -+ /* Tell the controller that we consumed the completion. */ -+ *(volatile grub_uint32_t *) cq->common.dbl = cq->head; -+ -+ return *cqe; -+} -+ -+static struct nvme_cqe -+nvme_wait(struct nvme_sq *sq) -+{ -+ // static const unsigned nvme_timeout = 5000 /* ms */; -+ // grub_uint32_t to = timer_calc(nvme_timeout); -+ while (!nvme_poll_cq(sq->cq)) { -+ /* FIXME -+ yield(); -+ -+ if (timer_check(to)) { -+ warn_timeout(); -+ return nvme_error_cqe(); -+ }*/ -+ } -+ -+ return nvme_consume_cqe(sq); -+} -+ -+/* Returns the next submission queue entry (or NULL if the queue is full). It -+ also fills out Command Dword 0 and clears the rest. */ -+static struct nvme_sqe * -+nvme_get_next_sqe(struct nvme_sq *sq, grub_uint8_t opc, void *metadata, void *data, void *data2) -+{ -+ if (((sq->head + 1) & sq->common.mask) == sq->tail) { -+ grub_dprintf("nvme", "submission queue is full\n"); -+ return NULL; -+ } -+ -+ struct nvme_sqe *sqe = &sq->sqe[sq->tail]; -+ grub_dprintf("nvme", "sq %p next_sqe %u\n", sq, sq->tail); -+ -+ grub_memset(sqe, 0, sizeof(*sqe)); -+ sqe->cdw0 = opc | (sq->tail << 16 /* CID */); -+ sqe->mptr = (grub_uint32_t)metadata; -+ sqe->dptr_prp1 = (grub_uint32_t)data; -+ sqe->dptr_prp2 = (grub_uint32_t)data2; -+ -+ return sqe; -+} -+ -+/* Call this after you've filled out an sqe that you've got from nvme_get_next_sqe. */ -+static void -+nvme_commit_sqe(struct nvme_sq *sq) -+{ -+ grub_dprintf("nvme", "sq %p commit_sqe %u\n", sq, sq->tail); -+ sq->tail = (sq->tail + 1) & sq->common.mask; -+ *(volatile grub_uint32_t *) sq->common.dbl = sq->tail; -+} -+ -+/* Perform an identify command on the admin queue and return the resulting -+ buffer. This may be a NULL pointer, if something failed. This function -+ cannot be used after initialization, because it uses buffers in tmp zone. */ -+static union nvme_identify * -+nvme_admin_identify(struct nvme_ctrl *ctrl, grub_uint8_t cns, grub_uint32_t nsid) -+{ -+ union nvme_identify *identify_buf = zalloc_page_aligned(4096); -+ if (!identify_buf) -+ return NULL; -+ -+ struct nvme_sqe *cmd_identify; -+ cmd_identify = nvme_get_next_sqe(&ctrl->admin_sq, -+ NVME_SQE_OPC_ADMIN_IDENTIFY, NULL, -+ identify_buf, NULL); -+ if (!cmd_identify) -+ goto error; -+ -+ cmd_identify->nsid = nsid; -+ cmd_identify->dword[10] = cns; -+ -+ nvme_commit_sqe(&ctrl->admin_sq); -+ -+ struct nvme_cqe cqe = nvme_wait(&ctrl->admin_sq); -+ -+ if (!nvme_is_cqe_success(&cqe)) { -+ goto error; -+ } -+ -+ return identify_buf; -+ error: -+ grub_free(identify_buf); -+ return NULL; -+} -+ -+static struct nvme_identify_ctrl * -+nvme_admin_identify_ctrl(struct nvme_ctrl *ctrl) -+{ -+ return &nvme_admin_identify(ctrl, NVME_ADMIN_IDENTIFY_CNS_ID_CTRL, 0)->ctrl; -+} -+ -+static struct nvme_identify_ns * -+nvme_admin_identify_ns(struct nvme_ctrl *ctrl, grub_uint32_t ns_id) -+{ -+ return &nvme_admin_identify(ctrl, NVME_ADMIN_IDENTIFY_CNS_ID_NS, -+ ns_id)->ns; -+} -+ -+static void -+nvme_probe_ns(struct nvme_ctrl *ctrl, grub_uint32_t ns_idx, grub_uint8_t mdts) -+{ -+ grub_uint32_t ns_id = ns_idx + 1; -+ -+ struct nvme_identify_ns *id = nvme_admin_identify_ns(ctrl, ns_id); -+ if (!id) { -+ grub_dprintf("nvme", "NVMe couldn't identify namespace %u.\n", ns_id); -+ goto free_buffer; -+ } -+ -+ grub_uint8_t current_lba_format = id->flbas & 0xF; -+ if (current_lba_format > id->nlbaf) { -+ grub_dprintf("nvme", "NVMe NS %u: current LBA format %u is beyond what the " -+ " namespace supports (%u)?\n", -+ ns_id, current_lba_format, id->nlbaf + 1); -+ goto free_buffer; -+ } -+ -+ if (!id->nsze) { -+ grub_dprintf("nvme", "NVMe NS %u is inactive.\n", ns_id); -+ goto free_buffer; -+ } -+ -+ if (!nvme_dma_buffer) { -+ nvme_dma_buffer = zalloc_page_aligned(NVME_PAGE_SIZE); -+ if (!nvme_dma_buffer) { -+ goto free_buffer; -+ } -+ } -+ -+ struct nvme_namespace *ns = grub_malloc(sizeof(*ns)); -+ if (!ns) { -+ goto free_buffer; -+ } -+ grub_memset(ns, 0, sizeof(*ns)); -+ ns->ctrl = ctrl; -+ ns->ns_id = ns_id; -+ ns->lba_count = id->nsze; -+ -+ struct nvme_lba_format *fmt = &id->lbaf[current_lba_format]; -+ -+ ns->block_size = 1U << fmt->lbads; -+ ns->metadata_size = fmt->ms; -+ -+ if (ns->block_size > NVME_PAGE_SIZE) { -+ /* If we see devices that trigger this path, we need to increase our -+ buffer size. */ -+ grub_free(ns); -+ goto free_buffer; -+ } -+ -+ if (mdts) { -+ ns->max_req_size = ((1U << mdts) * NVME_PAGE_SIZE) / ns->block_size; -+ grub_dprintf("nvme", "NVME NS %u max request size: %d sectors\n", -+ ns_id, ns->max_req_size); -+ } else { -+ ns->max_req_size = -1U; -+ } -+ -+ ns->devname = grub_xasprintf("nvme%un%u", ctrl->ctrlnum, ns_id); -+ ns->nsnum = grub_nvme_nscnt++; -+ -+ grub_list_push (GRUB_AS_LIST_P (&grub_nvme_namespaces), GRUB_AS_LIST (ns)); -+ -+free_buffer: -+ grub_free(id); -+} -+ -+ -+/* Release memory allocated for a completion queue */ -+static void -+nvme_destroy_cq(struct nvme_cq *cq) -+{ -+ grub_free(cq->cqe); -+ cq->cqe = NULL; -+} -+ -+/* Release memory allocated for a submission queue */ -+static void -+nvme_destroy_sq(struct nvme_sq *sq) -+{ -+ grub_free(sq->sqe); -+ sq->sqe = NULL; -+} -+ -+/* Returns 0 on success. */ -+static int -+nvme_create_io_cq(struct nvme_ctrl *ctrl, struct nvme_cq *cq, grub_uint16_t q_idx) -+{ -+ int rc; -+ struct nvme_sqe *cmd_create_cq; -+ grub_uint32_t length = 1 + (ctrl->reg->cap & 0xffff); -+ if (length > NVME_PAGE_SIZE / sizeof(struct nvme_cqe)) -+ length = NVME_PAGE_SIZE / sizeof(struct nvme_cqe); -+ -+ rc = nvme_init_cq(ctrl, cq, q_idx, length); -+ if (rc) { -+ goto err; -+ } -+ -+ cmd_create_cq = nvme_get_next_sqe(&ctrl->admin_sq, -+ NVME_SQE_OPC_ADMIN_CREATE_IO_CQ, NULL, -+ cq->cqe, NULL); -+ if (!cmd_create_cq) { -+ goto err_destroy_cq; -+ } -+ -+ cmd_create_cq->dword[10] = (cq->common.mask << 16) | (q_idx >> 1); -+ cmd_create_cq->dword[11] = 1 /* physically contiguous */; -+ -+ nvme_commit_sqe(&ctrl->admin_sq); -+ -+ struct nvme_cqe cqe = nvme_wait(&ctrl->admin_sq); -+ -+ if (!nvme_is_cqe_success(&cqe)) { -+ grub_dprintf("nvme", "create io cq failed: %08x %08x %08x %08x\n", -+ cqe.dword[0], cqe.dword[1], cqe.dword[2], cqe.dword[3]); -+ -+ goto err_destroy_cq; -+ } -+ -+ return 0; -+ -+err_destroy_cq: -+ nvme_destroy_cq(cq); -+err: -+ return -1; -+} -+ -+/* Returns 0 on success. */ -+static int -+nvme_create_io_sq(struct nvme_ctrl *ctrl, struct nvme_sq *sq, grub_uint16_t q_idx, struct nvme_cq *cq) -+{ -+ int rc; -+ struct nvme_sqe *cmd_create_sq; -+ grub_uint32_t length = 1 + (ctrl->reg->cap & 0xffff); -+ if (length > NVME_PAGE_SIZE / sizeof(struct nvme_cqe)) -+ length = NVME_PAGE_SIZE / sizeof(struct nvme_cqe); -+ -+ rc = nvme_init_sq(ctrl, sq, q_idx, length, cq); -+ if (rc) { -+ goto err; -+ } -+ -+ cmd_create_sq = nvme_get_next_sqe(&ctrl->admin_sq, -+ NVME_SQE_OPC_ADMIN_CREATE_IO_SQ, NULL, -+ sq->sqe, NULL); -+ if (!cmd_create_sq) { -+ goto err_destroy_sq; -+ } -+ -+ cmd_create_sq->dword[10] = (sq->common.mask << 16) | (q_idx >> 1); -+ cmd_create_sq->dword[11] = (q_idx >> 1) << 16 | 1 /* contiguous */; -+ grub_dprintf("nvme", "sq %p create dword10 %08x dword11 %08x\n", sq, -+ cmd_create_sq->dword[10], cmd_create_sq->dword[11]); -+ -+ nvme_commit_sqe(&ctrl->admin_sq); -+ -+ struct nvme_cqe cqe = nvme_wait(&ctrl->admin_sq); -+ -+ if (!nvme_is_cqe_success(&cqe)) { -+ grub_dprintf("nvme", "create io sq failed: %08x %08x %08x %08x\n", -+ cqe.dword[0], cqe.dword[1], cqe.dword[2], cqe.dword[3]); -+ goto err_destroy_sq; -+ } -+ -+ return 0; -+ -+err_destroy_sq: -+ nvme_destroy_sq(sq); -+err: -+ return -1; -+} -+ -+/* Reads count sectors into buf. The buffer cannot cross page boundaries. */ -+static int -+nvme_io_xfer(struct nvme_namespace *ns, grub_uint64_t lba, void *prp1, void *prp2, -+ grub_uint16_t count, int write) -+{ -+ if (((grub_uint32_t)prp1 & 0x3) || ((grub_uint32_t)prp2 & 0x3)) { -+ /* Buffer is misaligned */ -+ return -1; -+ } -+ -+ struct nvme_sqe *io_read = nvme_get_next_sqe(&ns->ctrl->io_sq, -+ write ? NVME_SQE_OPC_IO_WRITE -+ : NVME_SQE_OPC_IO_READ, -+ NULL, prp1, prp2); -+ io_read->nsid = ns->ns_id; -+ io_read->dword[10] = (grub_uint32_t)lba; -+ io_read->dword[11] = (grub_uint32_t)(lba >> 32); -+ io_read->dword[12] = (1U << 31 /* limited retry */) | (count - 1); -+ -+ nvme_commit_sqe(&ns->ctrl->io_sq); -+ -+ struct nvme_cqe cqe = nvme_wait(&ns->ctrl->io_sq); -+ -+ if (!nvme_is_cqe_success(&cqe)) { -+ grub_dprintf("nvme", "read io: %08x %08x %08x %08x\n", -+ cqe.dword[0], cqe.dword[1], cqe.dword[2], cqe.dword[3]); -+ -+ return -1; -+ } -+ -+ grub_dprintf("nvme", "ns %u %s lba %llu+%u\n", ns->ns_id, write ? "write" : "read", -+ lba, count); -+ return count; -+} -+ -+// Transfer up to one page of data using the internal dma bounce buffer -+static int -+nvme_bounce_xfer(struct nvme_namespace *ns, grub_uint64_t lba, void *buf, grub_uint16_t count, -+ int write) -+{ -+ grub_uint16_t const max_blocks = NVME_PAGE_SIZE / ns->block_size; -+ grub_uint16_t blocks = count < max_blocks ? count : max_blocks; -+ -+ if (write) -+ grub_memcpy(nvme_dma_buffer, buf, blocks * ns->block_size); -+ -+ int res = nvme_io_xfer(ns, lba, nvme_dma_buffer, NULL, blocks, write); -+ -+ if (!write && res >= 0) -+ grub_memcpy(buf, nvme_dma_buffer, res * ns->block_size); -+ -+ return res; -+} -+ -+#define NVME_MAX_PRPL_ENTRIES 15 /* Allows requests up to 64kb */ -+ -+// Transfer data using page list (if applicable) -+static int -+nvme_prpl_xfer(struct nvme_namespace *ns, grub_uint64_t lba, void *buf, grub_uint16_t count, -+ int write) -+{ -+ grub_uint32_t base = (long)buf; -+ grub_int32_t size; -+ -+ if (count > ns->max_req_size) -+ count = ns->max_req_size; -+ -+ size = count * ns->block_size; -+ /* Special case for transfers that fit into PRP1, but are unaligned */ -+ if (((size + (base & ~NVME_PAGE_MASK)) <= NVME_PAGE_SIZE)) -+ goto single; -+ -+ /* Every request has to be page aligned */ -+ if (base & ~NVME_PAGE_MASK) -+ goto bounce; -+ -+ /* Make sure a full block fits into the last chunk */ -+ if (size & (ns->block_size - 1ULL)) -+ goto bounce; -+ -+ /* Build PRP list if we need to describe more than 2 pages */ -+ if ((ns->block_size * count) > (NVME_PAGE_SIZE * 2)) { -+ grub_uint32_t prpl_len = 0; -+ grub_uint64_t *prpl = nvme_dma_buffer; -+ int first_page = 1; -+ for (; size > 0; base += NVME_PAGE_SIZE, size -= NVME_PAGE_SIZE) { -+ if (first_page) { -+ /* First page is special */ -+ first_page = 0; -+ continue; -+ } -+ if (prpl_len >= NVME_MAX_PRPL_ENTRIES) -+ goto bounce; -+ prpl[prpl_len++] = base; -+ } -+ return nvme_io_xfer(ns, lba, buf, prpl, count, write); -+ } -+ -+ /* Directly embed the 2nd page if we only need 2 pages */ -+ if ((ns->block_size * count) > NVME_PAGE_SIZE) -+ return nvme_io_xfer(ns, lba, buf, (char *) buf + NVME_PAGE_SIZE, count, write); -+ -+single: -+ /* One page is enough, don't expose anything else */ -+ return nvme_io_xfer(ns, lba, buf, NULL, count, write); -+ -+bounce: -+ /* Use bounce buffer to make transfer */ -+ return nvme_bounce_xfer(ns, lba, buf, count, write); -+} -+ -+static int -+nvme_create_io_queues(struct nvme_ctrl *ctrl) -+{ -+ if (nvme_create_io_cq(ctrl, &ctrl->io_cq, 3)) -+ goto err; -+ -+ if (nvme_create_io_sq(ctrl, &ctrl->io_sq, 2, &ctrl->io_cq)) -+ goto err_free_cq; -+ -+ return 0; -+ -+ err_free_cq: -+ nvme_destroy_cq(&ctrl->io_cq); -+ err: -+ return -1; -+} -+ -+/* Waits for CSTS.RDY to match rdy. Returns 0 on success. */ -+static int -+nvme_wait_csts_rdy(struct nvme_ctrl *ctrl, unsigned rdy) -+{ -+ // grub_uint32_t const max_to = 500 /* ms */ * ((ctrl->reg->cap >> 24) & 0xFFU); -+ // grub_uint32_t to = timer_calc(max_to); -+ grub_uint32_t csts; -+ -+ while (rdy != ((csts = ctrl->reg->csts) & NVME_CSTS_RDY)) { -+ // FIXME -+ //yield(); -+ -+ if (csts & NVME_CSTS_FATAL) { -+ grub_dprintf("nvme", "NVMe fatal error during controller shutdown\n"); -+ return -1; -+ } -+ -+ /* -+ if (timer_check(to)) { -+ warn_timeout(); -+ return -1; -+ }*/ -+ } -+ -+ return 0; -+} -+ -+/* Returns 0 on success. */ -+static int grub_nvme_controller_enable(struct nvme_ctrl *ctrl) -+{ -+ grub_pci_address_t addr; -+ int rc; -+ -+ addr = grub_pci_make_address (ctrl->pci, GRUB_PCI_REG_COMMAND); -+ grub_pci_write_word (addr, grub_pci_read_word (addr) | GRUB_PCI_COMMAND_BUS_MASTER); -+ -+ /* Turn the controller off. */ -+ ctrl->reg->cc = 0; -+ if (nvme_wait_csts_rdy(ctrl, 0)) { -+ grub_dprintf("nvme", "NVMe fatal error during controller shutdown\n"); -+ return -1; -+ } -+ -+ ctrl->doorbell_stride = 4U << ((ctrl->reg->cap >> 32) & 0xF); -+ -+ rc = nvme_init_cq(ctrl, &ctrl->admin_cq, 1, -+ NVME_PAGE_SIZE / sizeof(struct nvme_cqe)); -+ if (rc) { -+ return -1; -+ } -+ -+ rc = nvme_init_sq(ctrl, &ctrl->admin_sq, 0, -+ NVME_PAGE_SIZE / sizeof(struct nvme_sqe), &ctrl->admin_cq); -+ if (rc) { -+ goto err_destroy_admin_cq; -+ } -+ -+ ctrl->reg->aqa = ctrl->admin_cq.common.mask << 16 -+ | ctrl->admin_sq.common.mask; -+ -+ ctrl->reg->asq = (grub_uint32_t)ctrl->admin_sq.sqe; -+ ctrl->reg->acq = (grub_uint32_t)ctrl->admin_cq.cqe; -+ -+ grub_dprintf("nvme", " admin submission queue: %p\n", ctrl->admin_sq.sqe); -+ grub_dprintf("nvme", " admin completion queue: %p\n", ctrl->admin_cq.cqe); -+ -+ ctrl->reg->cc = NVME_CC_EN | (NVME_CQE_SIZE_LOG << 20) -+ | (NVME_SQE_SIZE_LOG << 16 /* IOSQES */); -+ -+ if (nvme_wait_csts_rdy(ctrl, 1)) { -+ grub_dprintf("nvme", "NVMe fatal error while enabling controller\n"); -+ goto err_destroy_admin_sq; -+ } -+ -+ /* The admin queue is set up and the controller is ready. Let's figure out -+ what namespaces we have. */ -+ -+ struct nvme_identify_ctrl *identify = nvme_admin_identify_ctrl(ctrl); -+ -+ if (!identify) { -+ grub_dprintf("nvme", "NVMe couldn't identify controller.\n"); -+ goto err_destroy_admin_sq; -+ } -+ -+ grub_dprintf("nvme", "NVMe has %u namespace%s.\n", -+ identify->nn, (identify->nn == 1) ? "" : "s"); -+ -+ ctrl->ns_count = identify->nn; -+ grub_uint8_t mdts = identify->mdts; -+ grub_free(identify); -+ -+ if ((ctrl->ns_count == 0) || nvme_create_io_queues(ctrl)) { -+ /* No point to continue, if the controller says it doesn't have -+ namespaces or we couldn't create I/O queues. */ -+ goto err_destroy_admin_sq; -+ } -+ -+ /* Give the controller a global number */ -+ ctrl->ctrlnum = grub_nvme_ctrlcnt++; -+ -+ /* Populate namespace IDs */ -+ for (grub_uint32_t ns_idx = 0; ns_idx < ctrl->ns_count; ns_idx++) { -+ nvme_probe_ns(ctrl, ns_idx, mdts); -+ } -+ -+ grub_dprintf("nvme", "NVMe initialization complete!\n"); -+ return 0; -+ -+ err_destroy_admin_sq: -+ nvme_destroy_sq(&ctrl->admin_sq); -+ err_destroy_admin_cq: -+ nvme_destroy_cq(&ctrl->admin_cq); -+ return -1; -+} -+ -+static int grub_nvme_pci_probe(grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)), void *data __attribute__ ((unused))) -+{ -+ grub_pci_address_t addr; -+ grub_uint32_t class, bar, version; -+ struct nvme_reg volatile *reg; -+ -+ class = grub_pci_read (grub_pci_make_address (dev, GRUB_PCI_REG_CLASS)); -+ if (class >> 16 != 0x0108) -+ return 0; -+ if ((class >> 8 & 0xff) != 2) { /* as of NVM 1.0e */ -+ grub_dprintf("nvme", "Found incompatble NVMe: prog-if=%02x\n", class >> 8 & 0xff); -+ return 0; -+ } -+ -+ bar = grub_pci_read (grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0)); -+ reg = grub_pci_device_map_range (dev, bar & GRUB_PCI_ADDR_MEM_MASK, sizeof (*reg)); -+ -+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); -+ grub_pci_write_word (addr, grub_pci_read_word (addr) | GRUB_PCI_COMMAND_MEM_ENABLED); -+ -+ version = reg->vs; -+ grub_dprintf("nvme", "Found NVMe controller with version %u.%u.%u.\n", version >> 16, (version >> 8) & 0xFF, version & 0xFF); -+ grub_dprintf("nvme", " Capabilities %016llx\n", reg->cap); -+ -+ if (~reg->cap & NVME_CAP_CSS_NVME) { -+ grub_dprintf("nvme", "Controller doesn't speak NVMe command set. Skipping.\n"); -+ goto err; -+ } -+ -+ struct nvme_ctrl *ctrl = grub_malloc(sizeof(*ctrl)); -+ if (!ctrl) -+ goto err; -+ -+ grub_memset(ctrl, 0, sizeof(*ctrl)); -+ -+ ctrl->reg = reg; -+ ctrl->pci = dev; -+ -+ if (grub_nvme_controller_enable(ctrl)) -+ goto err_free_ctrl; -+ -+ return 0; -+ -+ err_free_ctrl: -+ grub_free(ctrl); -+ err: -+ grub_dprintf("nvme", "Failed to enable NVMe controller.\n"); -+ return 0; -+} -+ -+static int -+grub_nvme_iterate (grub_disk_dev_iterate_hook_t hook, void *hook_data, grub_disk_pull_t pull) -+{ -+ struct nvme_namespace *ns; -+ -+ if (pull != GRUB_DISK_PULL_NONE) -+ return 0; -+ -+ FOR_LIST_ELEMENTS(ns, grub_nvme_namespaces) -+ if (hook (ns->devname, hook_data)) -+ return 1; -+ -+ return 0; -+} -+ -+static grub_err_t -+grub_nvme_open (const char *name __attribute ((unused)), grub_disk_t disk __attribute ((unused))) -+{ -+ struct nvme_namespace *ns; -+ -+ FOR_LIST_ELEMENTS(ns, grub_nvme_namespaces) -+ if (grub_strcmp (ns->devname, name) == 0) -+ break; -+ -+ if (! ns) -+ return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "can't open device"); -+ -+ disk->total_sectors = ns->lba_count; -+ disk->max_agglomerate = ns->max_req_size; -+ -+ disk->id = ns->nsnum; /* global id of the namespace */ -+ -+ disk->data = ns; -+ -+ return 0; -+} -+ -+static grub_err_t -+nvme_readwrite(struct nvme_namespace *ns, grub_disk_addr_t sector, grub_size_t num_sectors, char *buf, int write) -+{ -+ for (int i = 0; i < num_sectors;) { -+ grub_uint16_t blocks_remaining = num_sectors - i; -+ char *op_buf = buf + i * ns->block_size; -+ int blocks = nvme_prpl_xfer(ns, sector + i, op_buf, blocks_remaining, write); -+ if (blocks < 0) -+ return GRUB_ERR_IO; -+ i += blocks; -+ } -+ return GRUB_ERR_NONE; -+} -+ -+static grub_err_t -+grub_nvme_read (grub_disk_t disk, grub_disk_addr_t sector, grub_size_t num_sectors, char *buf) -+{ -+ return nvme_readwrite((struct nvme_namespace *) disk->data, sector, num_sectors, buf, 0); -+} -+ -+static grub_err_t -+grub_nvme_write (grub_disk_t disk, grub_disk_addr_t sector, grub_size_t num_sectors, const char *buf) -+{ -+ return nvme_readwrite((struct nvme_namespace *) disk->data, sector, num_sectors, buf, 1); -+} -+ -+static struct grub_disk_dev grub_nvme_dev = -+ { -+ .name = "nvme", -+ .id = GRUB_DISK_DEVICE_NVME_ID, -+ .disk_iterate = grub_nvme_iterate, -+ .disk_open = grub_nvme_open, -+ .disk_read = grub_nvme_read, -+ .disk_write = grub_nvme_write, -+ .next = 0 -+ }; -+ -+GRUB_MOD_INIT(nvme) -+{ -+ grub_stop_disk_firmware (); -+ grub_pci_iterate (grub_nvme_pci_probe, NULL); -+ grub_disk_dev_register (&grub_nvme_dev); -+} -+ -+GRUB_MOD_FINI(nvme) -+{ -+ grub_disk_dev_unregister (&grub_nvme_dev); -+} -diff --git a/include/grub/disk.h b/include/grub/disk.h -index fbf23df7f..186e76f0b 100644 ---- a/include/grub/disk.h -+++ b/include/grub/disk.h -@@ -52,6 +52,7 @@ enum grub_disk_dev_id - GRUB_DISK_DEVICE_UBOOTDISK_ID, - GRUB_DISK_DEVICE_XEN, - GRUB_DISK_DEVICE_OBDISK_ID, -+ GRUB_DISK_DEVICE_NVME_ID - }; - - struct grub_disk; --- -2.39.2 - |