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- /*
- * XRP: Linux device driver for Xtensa Remote Processing
- *
- * Copyright (c) 2015 - 2017 Cadence Design Systems, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * Alternatively you can use and distribute this file under the terms of
- * the GNU General Public License version 2 or later.
- */
- #include <linux/version.h>
- #include <linux/atomic.h>
- #include <linux/acpi.h>
- #include <linux/completion.h>
- #include <linux/delay.h>
- #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 16, 0)
- #include <linux/dma-mapping.h>
- #else
- #include <linux/dma-direct.h>
- #endif
- #include <linux/firmware.h>
- #include <linux/fs.h>
- #include <linux/hashtable.h>
- #include <linux/highmem.h>
- #include <linux/idr.h>
- #include <linux/interrupt.h>
- #include <linux/io.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/of.h>
- #include <linux/of_address.h>
- #include <linux/of_device.h>
- #include <linux/of_reserved_mem.h>
- #include <linux/platform_device.h>
- #include <linux/pm_runtime.h>
- #include <linux/property.h>
- #include <linux/sched.h>
- #include <linux/slab.h>
- #include <linux/sort.h>
- #include <linux/timer.h>
- #include <linux/dma-mapping.h>
- #include <linux/dma-buf.h>
- #include <asm/mman.h>
- #include <linux/mman.h>
- #include <asm/uaccess.h>
- #include "xrp_cma_alloc.h"
- #include "xrp_firmware.h"
- #include "xrp_hw.h"
- #include "xrp_internal.h"
- #include "xrp_kernel_defs.h"
- #include "xrp_kernel_dsp_interface.h"
- #include "xrp_private_alloc.h"
- #include "xrp_debug.h"
- #define DRIVER_NAME "xrp"
- #define XRP_DEFAULT_TIMEOUT 60
- #ifndef __io_virt
- #define __io_virt(a) ((void __force *)(a))
- #endif
- struct xrp_alien_mapping {
- unsigned long vaddr;
- unsigned long size;
- phys_addr_t paddr;
- void *allocation;
- enum {
- ALIEN_GUP,
- ALIEN_PFN_MAP,
- ALIEN_COPY,
- } type;
- };
- struct xrp_mapping {
- enum {
- XRP_MAPPING_NONE,
- XRP_MAPPING_NATIVE,
- XRP_MAPPING_ALIEN,
- XRP_MAPPING_KERNEL = 0x4,
- } type;
- union {
- struct {
- struct xrp_allocation *xrp_allocation;
- unsigned long vaddr;
- } native;
- struct xrp_alien_mapping alien_mapping;
- };
- };
- struct xvp_file {
- struct xvp *xvp;
- spinlock_t busy_list_lock;
- struct xrp_allocation *busy_list;
- };
- struct xrp_known_file {
- void *filp;
- struct hlist_node node;
- };
- struct xrp_dma_buf_item{
- struct list_head link;
- struct dma_buf *dmabuf;
- struct sg_table *sgt;
- struct dma_buf_attachment * attachment;
- int ref;
- };
- static int firmware_command_timeout = XRP_DEFAULT_TIMEOUT;
- module_param(firmware_command_timeout, int, 0644);
- MODULE_PARM_DESC(firmware_command_timeout, "Firmware command timeout in seconds.");
- static int firmware_reboot = 1;
- module_param(firmware_reboot, int, 0644);
- MODULE_PARM_DESC(firmware_reboot, "Reboot firmware on command timeout.");
- enum {
- LOOPBACK_NORMAL, /* normal work mode */
- LOOPBACK_NOIO, /* don't communicate with FW, but still load it and control DSP */
- LOOPBACK_NOMMIO, /* don't comminicate with FW or use DSP MMIO, but still load the FW */
- LOOPBACK_NOFIRMWARE, /* communicate with FW or use DSP MMIO, don't load the FW */
- LOOPBACK_NOFIRMWARE_NOMMIO, /* don't communicate with FW or use DSP MMIO, don't load the FW */
- };
- static int loopback = 0;
- module_param(loopback, int, 0644);
- MODULE_PARM_DESC(loopback, "Don't use actual DSP, perform everything locally.");
- static int load_mode = 0;
- module_param(load_mode, int, 0644);
- MODULE_PARM_DESC(load_mode, "firmware load mode. 0: load by driver. 1:load by xplorer to debug.");
- enum {
- LOAD_MODE_AUTO, /* load firmware auto by drvier */
- LOAD_MODE_MANUAL, /* load firmware manually for debug*/
- };
- static int heartbeat_period = 0;
- module_param(heartbeat_period, int, 0644);
- MODULE_PARM_DESC(heartbeat_period, "Firmware command timeout in seconds.");
- static int dsp_fw_log_mode = 1;
- module_param(dsp_fw_log_mode, int, 0644);
- MODULE_PARM_DESC(dsp_fw_log_mode, "Firmware LOG MODE.0:disable,1:ERROR(DEFAULT),2:WRNING,3:INFO,4:DEUBG,5:TRACE");
- static DEFINE_HASHTABLE(xrp_known_files, 10);
- static DEFINE_SPINLOCK(xrp_known_files_lock);
- static DEFINE_SPINLOCK(xrp_dma_buf_lock);
- static DEFINE_IDA(xvp_nodeid);
- static int xrp_boot_firmware(struct xvp *xvp);
- static long xrp_copy_user_from_phys(struct xvp *xvp,
- unsigned long vaddr, unsigned long size,
- phys_addr_t paddr, unsigned long flags);
- static bool xrp_cacheable(struct xvp *xvp, unsigned long pfn,
- unsigned long n_pages)
- {
- if (xvp->hw_ops->cacheable) {
- return xvp->hw_ops->cacheable(xvp->hw_arg, pfn, n_pages);
- } else {
- unsigned long i;
- for (i = 0; i < n_pages; ++i)
- if (!pfn_valid(pfn + i))
- return false;
- return true;
- }
- }
- static int xrp_dma_direction(unsigned flags)
- {
- static const enum dma_data_direction xrp_dma_direction[] = {
- [0] = DMA_NONE,
- [XRP_FLAG_READ] = DMA_TO_DEVICE,
- [XRP_FLAG_WRITE] = DMA_FROM_DEVICE,
- [XRP_FLAG_READ_WRITE] = DMA_BIDIRECTIONAL,
- };
- return xrp_dma_direction[flags & XRP_FLAG_READ_WRITE];
- }
- static void xrp_default_dma_sync_for_device(struct xvp *xvp,
- phys_addr_t phys,
- unsigned long size,
- unsigned long flags)
- {
- dma_sync_single_for_device(xvp->dev, phys_to_dma(xvp->dev, phys), size,
- xrp_dma_direction(flags));
- }
- static void xrp_dma_sync_for_device(struct xvp *xvp,
- unsigned long virt,
- phys_addr_t phys,
- unsigned long size,
- unsigned long flags)
- {
- if (xvp->hw_ops->dma_sync_for_device)
- xvp->hw_ops->dma_sync_for_device(xvp->hw_arg,
- (void *)virt, phys, size,
- flags);
- else
- xrp_default_dma_sync_for_device(xvp, phys, size, flags);
- }
- static void xrp_default_dma_sync_for_cpu(struct xvp *xvp,
- phys_addr_t phys,
- unsigned long size,
- unsigned long flags)
- {
- dma_sync_single_for_cpu(xvp->dev, phys_to_dma(xvp->dev, phys), size,
- xrp_dma_direction(flags));
- }
- static void xrp_dma_sync_for_cpu(struct xvp *xvp,
- unsigned long virt,
- phys_addr_t phys,
- unsigned long size,
- unsigned long flags)
- {
- if (xvp->hw_ops->dma_sync_for_cpu)
- xvp->hw_ops->dma_sync_for_cpu(xvp->hw_arg,
- (void *)virt, phys, size,
- flags);
- else
- xrp_default_dma_sync_for_cpu(xvp, phys, size, flags);
- }
- static inline void xrp_comm_write32(volatile void __iomem *addr, u32 v)
- {
- //__raw_writel(v, addr);
- writel(v, addr);
- }
- static inline u32 xrp_comm_read32(volatile void __iomem *addr)
- {
- //return __raw_readl(addr);
- return readl(addr);
- }
- static inline void __iomem *xrp_comm_put_tlv(void __iomem **addr,
- uint32_t type,
- uint32_t length)
- {
- struct xrp_dsp_tlv __iomem *tlv = *addr;
- xrp_comm_write32(&tlv->type, type);
- xrp_comm_write32(&tlv->length, length);
- *addr = tlv->value + ((length + 3) / 4);
- return tlv->value;
- }
- static inline void __iomem *xrp_comm_get_tlv(void __iomem **addr,
- uint32_t *type,
- uint32_t *length)
- {
- struct xrp_dsp_tlv __iomem *tlv = *addr;
- *type = xrp_comm_read32(&tlv->type);
- *length = xrp_comm_read32(&tlv->length);
- *addr = tlv->value + ((*length + 3) / 4);
- return tlv->value;
- }
- static inline void xrp_comm_write(volatile void __iomem *addr, const void *p,
- size_t sz)
- {
- size_t sz32 = sz & ~3;
- u32 v;
- while (sz32) {
- memcpy(&v, p, sizeof(v));
- __raw_writel(v, addr);
- p += 4;
- addr += 4;
- sz32 -= 4;
- }
- sz &= 3;
- if (sz) {
- v = 0;
- memcpy(&v, p, sz);
- __raw_writel(v, addr);
- }
- }
- static inline void xrp_comm_read(volatile void __iomem *addr, void *p,
- size_t sz)
- {
- size_t sz32 = sz & ~3;
- u32 v;
- while (sz32) {
- v = __raw_readl(addr);
- memcpy(p, &v, sizeof(v));
- p += 4;
- addr += 4;
- sz32 -= 4;
- }
- sz &= 3;
- if (sz) {
- v = __raw_readl(addr);
- memcpy(p, &v, sz);
- }
- }
- static inline void xrp_send_device_irq(struct xvp *xvp)
- {
- if (xvp->hw_ops->send_irq)
- xvp->hw_ops->send_irq(xvp->hw_arg);
- }
- static inline bool xrp_panic_check(struct xvp *xvp)
- {
- if (xvp->hw_ops->panic_check)
- return xvp->hw_ops->panic_check(xvp->hw_arg);
- else
- return panic_check(xvp->panic_log);
- }
- static void xrp_add_known_file(struct file *filp)
- {
- struct xrp_known_file *p = kmalloc(sizeof(*p), GFP_KERNEL);
- if (!p)
- return;
- p->filp = filp;
- spin_lock(&xrp_known_files_lock);
- hash_add(xrp_known_files, &p->node, (unsigned long)filp);
- spin_unlock(&xrp_known_files_lock);
- }
- static void xrp_remove_known_file(struct file *filp)
- {
- struct xrp_known_file *p;
- struct xrp_known_file *pf = NULL;
- spin_lock(&xrp_known_files_lock);
- hash_for_each_possible(xrp_known_files, p, node, (unsigned long)filp) {
- if (p->filp == filp) {
- hash_del(&p->node);
- pf = p;
- break;
- }
- }
- spin_unlock(&xrp_known_files_lock);
- if (pf)
- kfree(pf);
- }
- static bool xrp_is_known_file(struct file *filp)
- {
- bool ret = false;
- struct xrp_known_file *p;
- spin_lock(&xrp_known_files_lock);
- hash_for_each_possible(xrp_known_files, p, node, (unsigned long)filp) {
- if (p->filp == filp) {
- ret = true;
- break;
- }
- }
- spin_unlock(&xrp_known_files_lock);
- return ret;
- }
- static void xrp_sync_v2(struct xvp *xvp,
- void *hw_sync_data, size_t sz)
- {
- struct xrp_dsp_sync_v2 __iomem *shared_sync = xvp->comm;
- void __iomem *addr = shared_sync->hw_sync_data;
-
- xrp_comm_write(xrp_comm_put_tlv(&addr,
- XRP_DSP_SYNC_TYPE_HW_SPEC_DATA, sz),
- hw_sync_data, sz);
- if (xvp->n_queues > 1) {
- struct xrp_dsp_sync_v2 __iomem *queue_sync;
- unsigned i;
- xrp_comm_write(xrp_comm_put_tlv(&addr,
- XRP_DSP_SYNC_TYPE_HW_QUEUES,
- xvp->n_queues * sizeof(u32)),
- xvp->queue_priority,
- xvp->n_queues * sizeof(u32));
- for (i = 1; i < xvp->n_queues; ++i) {
- queue_sync = xvp->queue[i].comm;
- xrp_comm_write32(&queue_sync->sync,
- XRP_DSP_SYNC_IDLE);
- }
- }
- struct xrp_dsp_debug_info debug_info ={
- .panic_addr = xvp->panic_phy,
- .log_level = dsp_fw_log_mode,
- };
- xrp_comm_write(xrp_comm_put_tlv(&addr,
- XRP_DSP_SYNC_TYPE_HW_DEBUG_INFO, sizeof(struct xrp_dsp_debug_info)),
- &debug_info, sizeof(struct xrp_dsp_debug_info));
- xrp_comm_put_tlv(&addr, XRP_DSP_SYNC_TYPE_LAST, 0);
- }
- static int xrp_sync_complete_v2(struct xvp *xvp, size_t sz)
- {
- struct xrp_dsp_sync_v2 __iomem *shared_sync = xvp->comm;
- void __iomem *addr = shared_sync->hw_sync_data;
- u32 type, len;
- xrp_comm_get_tlv(&addr, &type, &len);
- if (len != sz) {
- dev_err(xvp->dev,
- "HW spec data size modified by the DSP\n");
- return -EINVAL;
- }
- if (!(type & XRP_DSP_SYNC_TYPE_ACCEPT))
- dev_info(xvp->dev,
- "HW spec data not recognized by the DSP\n");
- if (xvp->n_queues > 1) {
- void __iomem *p = xrp_comm_get_tlv(&addr, &type, &len);
- if (len != xvp->n_queues * sizeof(u32)) {
- dev_err(xvp->dev,
- "Queue priority size modified by the DSP\n");
- return -EINVAL;
- }
- if (type & XRP_DSP_SYNC_TYPE_ACCEPT) {
- xrp_comm_read(p, xvp->queue_priority,
- xvp->n_queues * sizeof(u32));
- } else {
- dev_info(xvp->dev,
- "Queue priority data not recognized by the DSP\n");
- xvp->n_queues = 1;
- }
- }
- return 0;
- }
- static int xrp_synchronize(struct xvp *xvp)
- {
- size_t sz;
- void *hw_sync_data;
- unsigned long deadline = jiffies + firmware_command_timeout * HZ;
- struct xrp_dsp_sync_v1 __iomem *shared_sync = xvp->comm;
- int ret;
- u32 v, v1;
- hw_sync_data = xvp->hw_ops->get_hw_sync_data(xvp->hw_arg, &sz);
- if (!hw_sync_data) {
- ret = -ENOMEM;
- goto err;
- }
- ret = -ENODEV;
- dev_dbg(xvp->dev,"%s:comm sync:%p\n",__func__,&shared_sync->sync);
- xrp_comm_write32(&shared_sync->sync, XRP_DSP_SYNC_START);
- mb();
- do {
- v = xrp_comm_read32(&shared_sync->sync);
- if (v != XRP_DSP_SYNC_START)
- break;
- if (xrp_panic_check(xvp))
- goto err;
- schedule();
- } while (time_before(jiffies, deadline));
- dev_dbg(xvp->dev,"%s:comm sync data :%x\n",__func__,v);
- switch (v) {
- case XRP_DSP_SYNC_DSP_READY_V1:
- if (xvp->n_queues > 1) {
- dev_info(xvp->dev,
- "Queue priority data not recognized by the DSP\n");
- xvp->n_queues = 1;
- }
- xrp_comm_write(&shared_sync->hw_sync_data, hw_sync_data, sz);
- break;
- case XRP_DSP_SYNC_DSP_READY_V2:
- xrp_sync_v2(xvp, hw_sync_data, sz);
- break;
- case XRP_DSP_SYNC_START:
- dev_err(xvp->dev, "DSP is not ready for synchronization\n");
- goto err;
- default:
- dev_err(xvp->dev,
- "DSP response to XRP_DSP_SYNC_START is not recognized\n");
- goto err;
- }
- mb();
- xrp_comm_write32(&shared_sync->sync, XRP_DSP_SYNC_HOST_TO_DSP);
- do {
- mb();
- v1 = xrp_comm_read32(&shared_sync->sync);
- if (v1 == XRP_DSP_SYNC_DSP_TO_HOST)
- break;
- if (xrp_panic_check(xvp))
- goto err;
- schedule();
- } while (time_before(jiffies, deadline));
- if (v1 != XRP_DSP_SYNC_DSP_TO_HOST) {
- dev_err(xvp->dev,
- "DSP haven't confirmed initialization data reception\n");
- goto err;
- }
- if (v == XRP_DSP_SYNC_DSP_READY_V2) {
- ret = xrp_sync_complete_v2(xvp, sz);
- if (ret < 0)
- goto err;
- }
- xrp_send_device_irq(xvp);
- // if (xvp->host_irq_mode) {
- // int res = wait_for_completion_timeout(&xvp->queue[0].completion,
- // firmware_command_timeout * HZ);
- // ret = -ENODEV;
- // if (xrp_panic_check(xvp))
- // goto err;
- // if (res == 0) {
- // dev_err(xvp->dev,
- // "host IRQ mode is requested, but DSP couldn't deliver IRQ during synchronization\n");
- // goto err;
- // }
- // }
- ret = 0;
- err:
- kfree(hw_sync_data);
- xrp_comm_write32(&shared_sync->sync, XRP_DSP_SYNC_IDLE);
- return ret;
- }
- static bool xrp_cmd_complete(struct xrp_comm *xvp)
- {
- struct xrp_dsp_cmd __iomem *cmd = xvp->comm;
- u32 flags = xrp_comm_read32(&cmd->flags);
- pr_debug(" xrp_cmd_complete %x\n", flags);
- rmb();
- return (flags & (XRP_DSP_CMD_FLAG_REQUEST_VALID |
- XRP_DSP_CMD_FLAG_RESPONSE_VALID)) ==
- (XRP_DSP_CMD_FLAG_REQUEST_VALID |
- XRP_DSP_CMD_FLAG_RESPONSE_VALID);
- }
- static inline int xrp_report_comlete(struct xvp *xvp)
- {
- struct xrp_dsp_cmd __iomem *cmd = xvp->comm;
- if(!xvp->reporter)
- return -1;
- u32 flags = xrp_comm_read32(&cmd->report_id);
- if(flags& XRP_DSP_REPORT_TO_HOST_FLAG )
- {
- // dev_err(xvp->dev, "%s,report_flag %x\n", __func__,flags);
- flags &= (~XRP_DSP_REPORT_TO_HOST_FLAG);
- xrp_comm_write32(&cmd->report_id,flags);
- tasklet_schedule(&xvp->reporter->report_task);
- return 0;
- }
- return -1;
- }
- static inline int xrp_device_cmd_comlete(struct xvp *xvp)
- {
- struct xrp_dsp_cmd __iomem *cmd = xvp->comm;
- u32 flags = xrp_comm_read32(&cmd->cmd_flag);
- if(flags& XRP_DSP_REPORT_TO_HOST_FLAG )
- {
- xrp_comm_write32(&cmd->cmd_flag,0);
- return 0;
- }
- return -1;
- }
- irqreturn_t xrp_irq_handler(int irq, struct xvp *xvp)
- {
- unsigned i, n = 0;
- // dev_dbg(xvp->dev, "%s\n", __func__);
- if (!xvp->comm)
- return IRQ_NONE;
- if(!xrp_report_comlete(xvp))
- {
- dev_dbg(xvp->dev, "completing report\n");
- // return IRQ_HANDLED;
- }
- if(xrp_device_cmd_comlete(xvp))
- {
- dev_dbg(xvp->dev, "no cmd msg report\n");
- return IRQ_HANDLED;
- }
- for (i = 0; i < xvp->n_queues; ++i) {
- if (xrp_cmd_complete(xvp->queue + i)) {
- dev_dbg(xvp->dev, "completing queue %d\n", i);
- complete(&xvp->queue[i].completion);
- ++n;
- }
- }
- return n ? IRQ_HANDLED : IRQ_NONE;
- }
- EXPORT_SYMBOL(xrp_irq_handler);
- static inline void xvp_file_lock(struct xvp_file *xvp_file)
- {
- spin_lock(&xvp_file->busy_list_lock);
- }
- static inline void xvp_file_unlock(struct xvp_file *xvp_file)
- {
- spin_unlock(&xvp_file->busy_list_lock);
- }
- static void xrp_allocation_queue(struct xvp_file *xvp_file,
- struct xrp_allocation *xrp_allocation)
- {
- xvp_file_lock(xvp_file);
- xrp_allocation->next = xvp_file->busy_list;
- xvp_file->busy_list = xrp_allocation;
- xvp_file_unlock(xvp_file);
- }
- static struct xrp_allocation *xrp_allocation_dequeue(struct xvp_file *xvp_file,
- phys_addr_t paddr, u32 size)
- {
- struct xrp_allocation **pcur;
- struct xrp_allocation *cur;
- xvp_file_lock(xvp_file);
- for (pcur = &xvp_file->busy_list; (cur = *pcur); pcur = &((*pcur)->next)) {
- pr_debug("%s: %pap / %pap x %d\n", __func__, &paddr, &cur->start, cur->size);
- if (paddr >= cur->start && paddr + size - cur->start <= cur->size) {
- *pcur = cur->next;
- break;
- }
- }
- xvp_file_unlock(xvp_file);
- return cur;
- }
- static long xrp_ioctl_alloc(struct file *filp,
- struct xrp_ioctl_alloc __user *p)
- {
- struct xvp_file *xvp_file = filp->private_data;
- struct xrp_allocation *xrp_allocation;
- unsigned long vaddr;
- struct xrp_ioctl_alloc xrp_ioctl_alloc;
- long err;
- // pr_debug("%s: %p\n", __func__, p);
- if (copy_from_user(&xrp_ioctl_alloc, p, sizeof(*p)))
- return -EFAULT;
- // pr_debug("%s: size = %d, align = %x\n", __func__,
- // xrp_ioctl_alloc.size, xrp_ioctl_alloc.align);
- err = xrp_allocate(xvp_file->xvp->pool,
- xrp_ioctl_alloc.size,
- xrp_ioctl_alloc.align,
- &xrp_allocation);
- if (err)
- return err;
- xrp_allocation_queue(xvp_file, xrp_allocation);
- vaddr = vm_mmap(filp, 0, xrp_allocation->size,
- PROT_READ | PROT_WRITE, MAP_SHARED,
- xrp_allocation_offset(xrp_allocation));
- xrp_ioctl_alloc.addr = vaddr;
- xrp_ioctl_alloc.paddr = xrp_allocation->start;
- pr_debug("%s: vaddr = %llx, paddr = %llx\n", __func__,
- xrp_ioctl_alloc.addr, xrp_ioctl_alloc.paddr);
- if (copy_to_user(p, &xrp_ioctl_alloc, sizeof(*p))) {
- vm_munmap(vaddr, xrp_ioctl_alloc.size);
- return -EFAULT;
- }
- return 0;
- }
- static void xrp_report_tasklet(unsigned long arg)
- {
- struct xvp *xvp=(struct xvp *)arg;
- struct xrp_dsp_cmd __iomem *cmd=xvp->comm;
- struct xrp_report_buffer *p_buf = xvp->reporter->buffer_virt;
- // pr_debug("%s,addr:%lx\n",__func__,arg);
- if(!xvp->reporter->fasync)
- {
- pr_debug("%s:fasync is not register in user space\n",__func__);
- return;
- }
- // pr_debug("%s,%d\n",__func__,xvp->reporter->fasync->magic);
- // if(!xvp->reporter->user_buffer_virt &&
- // !xvp->reporter->buffer_size)
- // {
- // pr_debug("%s:user_buffer_virt and buffer size is invalid\n",__func__);
- // return;
- // }
- // size_t s= xrp_comm_read32(&cmd->report_paylad_size);
- // unsigned int id = xrp_comm_read32(&cmd->report_id);
- // if(copy_to_user(&p_buf_user->report_id,&id,sizeof(p_buf_user->report_id)));
- // {
- // pr_debug("%s:copy report id to user fail\n",__func__);
- // return;
- // }
- // if(xvp->reporter->buffer_size>XRP_DSP_CMD_INLINE_DATA_SIZE)
- // {
- // if(xrp_copy_user_from_phys(xvp,&p_buf_user->data[0],s,xvp->reporter->buffer_phys,XRP_FLAG_READ_WRITE))
- // return;
- // }
- // else
- // {
- // char temp_buf[XRP_DSP_CMD_INLINE_DATA_SIZE];
- // xrp_comm_read(&cmd->report_data,temp_buf,s);
- // if(copy_to_user(&p_buf_user->data[0],temp_buf,s))
- // {
- // pr_debug("%s:copy report data to user fail\n",__func__);
- // return;
- // }
- // }
- /*****clear report*********************/
- p_buf->report_id = xrp_comm_read32(&cmd->report_id)&0xffff;
- //xrp_dma_sync_for_cpu(xvp,xvp->reporter->buffer_virt,xvp->reporter->buffer_phys,xvp->reporter->buffer_size,XRP_FLAG_WRITE);
- kill_fasync(&(xvp->reporter->fasync), SIGIO, POLL_IN);
- xrp_comm_write32(&cmd->report_id,0x0);
- // pr_debug("%s,report_id:%d,report_data:%x\n",__func__,p_buf->report_id,p_buf->data[0]);
- }
- static long xrp_map_phy_to_virt(phys_addr_t paddr,unsigned long size,__u64 *vaddr)
- {
- // if (pfn_valid(__phys_to_pfn(paddr))) {
- // struct page *page = pfn_to_page(__phys_to_pfn(paddr));
- // size_t page_offs = paddr & ~PAGE_MASK;
- // size_t offs;
- // // for (offs = 0; offs < size; ++page) {
- // // void *p = kmap(page);
- // // size_t sz = PAGE_SIZE - page_offs;
- // // size_t copy_sz = sz;
- // // unsigned long rc;
- // // }
- // if(page_offs+size>PAGE_SIZE)
- // {
- // pr_debug("%s,phys addr map to virt exceed one page",__func__);
- // return -EINVAL;
- // }
- // void *p = kmap(page);
- // if(!p)
- // {
- // pr_debug("%s couldn't kmap %pap x 0x%08x\n",__func__,&paddr, (u32)size);
- // return -EINVAL;
- // }
- // *vaddr =p + page_offs;
- // pr_debug("%s map to mem",__func__);
- // return 0;
- // }
- // else
- {
- void __iomem *p = ioremap(paddr, size);
- unsigned long rc;
- if (!p) {
- pr_debug("%s,couldn't ioremap %pap x 0x%08x\n",__func__,&paddr, (u32)size);
- return -EINVAL;
- }
- *vaddr = p;
- pr_debug("%s map to io mem",__func__);
- return 0;
- }
- // iounmap(p);
- // if (rc)
- // return -EFAULT;
- // }
- }
- static long xrp_unmap_phy_to_virt(unsigned long *vaddr,phys_addr_t paddr,unsigned long size)
- {
- if (pfn_valid(__phys_to_pfn(paddr))) {
- struct page *page = pfn_to_page(__phys_to_pfn(paddr));
- kunmap(page);
- }
- else{
- iounmap(*vaddr);
- }
- *vaddr=NULL;
- return 0;
- }
- static long xrp_ioctl_alloc_report(struct file *filp,
- struct xrp_ioctl_alloc __user *p)
- {
- struct xvp_file *xvp_file = filp->private_data;
- struct xrp_allocation *xrp_allocation;
- struct xvp *xvp = xvp_file->xvp;
- struct xrp_ioctl_alloc xrp_ioctl_alloc;
- struct xrp_dsp_cmd __iomem *cmd=xvp->comm;
- unsigned long vaddr;
- long err;
- pr_debug("%s: %p\n", __func__, p);
- if (copy_from_user(&xrp_ioctl_alloc, p, sizeof(*p)))
- return -EFAULT;
- pr_debug("%s: virtAddr = %lx.size = %d, align = %x\n", __func__,
- xrp_ioctl_alloc.addr,xrp_ioctl_alloc.size,
- xrp_ioctl_alloc.align);
- // if(NULL == xrp_ioctl_alloc.addr)
- // {
- // return -EFAULT;
- // }
- xvp->reporter= kmalloc(sizeof(*(xvp->reporter)), GFP_KERNEL);
- if (!xvp->reporter)
- return -EFAULT;
- xvp->reporter->fasync=NULL;
- err = xrp_allocate(xvp_file->xvp->pool,
- xrp_ioctl_alloc.size,
- xrp_ioctl_alloc.align,
- &xrp_allocation);
- if (err)
- return err;
- xrp_allocation_queue(xvp_file, xrp_allocation);
- vaddr = vm_mmap(filp, 0, xrp_allocation->size,
- PROT_READ | PROT_WRITE, MAP_SHARED,
- xrp_allocation_offset(xrp_allocation));
- xrp_ioctl_alloc.addr=vaddr;
- xvp->reporter->buffer_phys = xrp_allocation->start;
- if(xrp_map_phy_to_virt(xvp->reporter->buffer_phys,sizeof(__u32),&xvp->reporter->buffer_virt))
- {
- pr_debug("%s: map to kernel virt fail\n", __func__);
- kfree(xvp->reporter);
- return -EFAULT;
- }
- xrp_comm_write32(&cmd->report_addr,
- xrp_translate_to_dsp(&xvp->address_map,xvp->reporter->buffer_phys+sizeof(__u32)));
- unsigned int dsp_addr = xrp_comm_read32(&cmd->report_addr);
- pr_debug("%s: alloc_report buffer user virt:%llx,kernel virt:%lx, phys:%llx,dsp_addr:%x,size:%d\n", __func__,
- vaddr,xvp->reporter->buffer_virt,xvp->reporter->buffer_phys,dsp_addr,xrp_allocation->size);
- /*alloc report memory for DSP , alloc kernel memory for user get*/
- // if(xrp_ioctl_alloc.size>XRP_DSP_CMD_INLINE_DATA_SIZE)
- // {
- // err = xrp_allocate(xvp_file->xvp->pool,
- // xrp_ioctl_alloc.size,
- // xrp_ioctl_alloc.align,
- // &xrp_allocation);
- // if (err)
- // return err;
- // // xrp_allocation_queue(xvp_file, xrp_allocation);
- // xvp->reporter->buffer_phys = xrp_allocation->start;
- // xrp_comm_write32(&cmd->report_addr,
- // xrp_translate_to_dsp(&xvp->address_map,xvp->reporter->buffer_phys));
- // // vaddr = vm_mmap(filp, 0, xrp_allocation->size,
- // // PROT_READ | PROT_WRITE, MAP_SHARED,
- // // xrp_allocation_offset(xrp_allocation));
- // // xrp_ioctl_alloc.addr=vaddr;
- // pr_debug("%s: kernel bufdfer:%lx\n", __func__, xvp->reporter->buffer_phys);
- // }
- // else{
- // xvp->reporter->buffer_phys = NULL;
- // }
- /*save the user addr ,which kernel copy the report to */
- // xvp->reporter->user_buffer_virt = xrp_ioctl_alloc.addr;
- xvp->reporter->buffer_size = xrp_ioctl_alloc.size;
- xrp_comm_write32(&cmd->report_buffer_size,xvp->reporter->buffer_size);
- xrp_comm_write32(&cmd->report_status,XRP_DSP_REPORT_WORKING);
- xrp_comm_write32(&cmd->report_id,0);
- tasklet_init(&xvp->reporter->report_task,xrp_report_tasklet,(unsigned long)xvp);
- if (copy_to_user(p, &xrp_ioctl_alloc, sizeof(*p))) {
- vm_munmap(vaddr, xrp_ioctl_alloc.size);
- kfree(xvp->reporter);
- pr_debug("%s: copy to user fail\n", __func__);
- return -EFAULT;
- }
- pr_debug("%s: alloc_report %lx end\n", __func__,xvp);
- return 0;
- }
- static int xrp_report_fasync(int fd, struct file *filp, int on){
- struct xvp_file *xvp_file = (struct xvp_file *)filp->private_data;
-
- pr_debug("%s: start,mode: %d\n", __func__,on);
- if(xvp_file->xvp->reporter == NULL)
- {
- pr_debug("%s: reporter is NULL\n", __func__,on);
- return 0;
- }
- if( fasync_helper(fd,filp,on,&(xvp_file->xvp->reporter->fasync)) < 0){
- pr_debug("%s: xrp_report_fasync fail\n", __func__);
- return -EIO;
- }
- pr_debug("%s: end\n", __func__);
- return 0;
- }
- static int xrp_report_fasync_release(struct file *filp){
- struct xvp_file *xvp_file = (struct xvp_file *)filp->private_data;
- if(xvp_file->xvp->reporter)
- return xrp_report_fasync(-1,filp,0);
- return 0;
- }
- static long xrp_ioctl_release_report(struct file *filp,
- struct xrp_ioctl_alloc __user *p)
- {
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- struct mm_struct *mm = current->mm;
- struct xrp_ioctl_alloc xrp_ioctl_alloc;
- struct vm_area_struct *vma;
- unsigned long start;
- struct xrp_dsp_cmd __iomem *cmd=xvp->comm;
- tasklet_kill(&xvp->reporter->report_task);
- xrp_comm_write32(&cmd->report_status,XRP_DSP_REPORT_INVALID);
- if (copy_from_user(&xrp_ioctl_alloc, p, sizeof(*p)))
- return -EFAULT;
- start = xrp_ioctl_alloc.addr;
- pr_debug("%s: virt_addr = 0x%08lx\n", __func__, start);
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- down_read(&mm->mmap_sem);
- #else
- down_read(&mm->mmap_lock);
- #endif
- vma = find_vma(mm, start);
- if (vma && vma->vm_file == filp &&
- vma->vm_start <= start && start < vma->vm_end) {
- size_t size;
- start = vma->vm_start;
- size = vma->vm_end - vma->vm_start;
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- up_read(&mm->mmap_sem);
- #else
- up_read(&mm->mmap_lock);
- #endif
- pr_debug("%s: 0x%lx x %zu\n", __func__, start, size);
- vm_munmap(start, size);
- }
- else{
- pr_debug("%s: no vma/bad vma for vaddr = 0x%08lx\n", __func__, start);
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- up_read(&mm->mmap_sem);
- #else
- up_read(&mm->mmap_lock);
- #endif
- return -EINVAL;
- }
- xrp_report_fasync_release(filp);
- kfree(xvp->reporter);
- xvp->reporter =NULL;
-
- return 0;
- }
- // static struct struct_list timer;
- // static void xrp_device_heartbeat_check(unsigned long arg)
- // {
- // struct xvp *xvp = struct xvp *(arg);
- // if(xvp->reporter != NULL)
- // {
- // xrp_comm_write32(&cmd->flags, 0);
- // }
- // mod_timer(&timer,jiffies + heartbeat_period * HZ);
- // }
- // static int xrp_device_heartbeat_init(void * arg)
- // {
- // if(heartbeat_period > 0)
- // {
- // init_timer(&timer);
- // timer.function = xrp_device_heartbeat_check;
- // timer.expires = jiffies + heartbeat_period * HZ;
- // timer.data = arg;
- // add_timer(&timer);
- // pr_debug("%s enable heartbeat timer\n", __func__);
- // }
- // }
- static void xrp_put_pages(phys_addr_t phys, unsigned long n_pages)
- {
- struct page *page;
- unsigned long i;
- page = pfn_to_page(__phys_to_pfn(phys));
- for (i = 0; i < n_pages; ++i)
- put_page(page + i);
- }
- static void xrp_alien_mapping_destroy(struct xrp_alien_mapping *alien_mapping)
- {
- switch (alien_mapping->type) {
- case ALIEN_GUP:
- xrp_put_pages(alien_mapping->paddr,
- PFN_UP(alien_mapping->vaddr +
- alien_mapping->size) -
- PFN_DOWN(alien_mapping->vaddr));
- break;
- case ALIEN_COPY:
- xrp_allocation_put(alien_mapping->allocation);
- break;
- default:
- break;
- }
- }
- static long xvp_pfn_virt_to_phys(struct xvp_file *xvp_file,
- struct vm_area_struct *vma,
- unsigned long vaddr, unsigned long size,
- phys_addr_t *paddr,
- struct xrp_alien_mapping *mapping)
- {
- int ret;
- unsigned long i;
- unsigned long nr_pages = PFN_UP(vaddr + size) - PFN_DOWN(vaddr);
- unsigned long pfn;
- const struct xrp_address_map_entry *address_map;
- ret = follow_pfn(vma, vaddr, &pfn);
- if (ret)
- return ret;
- *paddr = __pfn_to_phys(pfn) + (vaddr & ~PAGE_MASK);
- address_map = xrp_get_address_mapping(&xvp_file->xvp->address_map,
- *paddr);
- if (!address_map) {
- pr_debug("%s: untranslatable addr: %pap\n", __func__, paddr);
- return -EINVAL;
- }
- for (i = 1; i < nr_pages; ++i) {
- unsigned long next_pfn;
- phys_addr_t next_phys;
- ret = follow_pfn(vma, vaddr + (i << PAGE_SHIFT), &next_pfn);
- if (ret)
- return ret;
- if (next_pfn != pfn + 1) {
- pr_debug("%s: non-contiguous physical memory\n",
- __func__);
- return -EINVAL;
- }
- next_phys = __pfn_to_phys(next_pfn);
- if (xrp_compare_address(next_phys, address_map)) {
- pr_debug("%s: untranslatable addr: %pap\n",
- __func__, &next_phys);
- return -EINVAL;
- }
- pfn = next_pfn;
- }
- *mapping = (struct xrp_alien_mapping){
- .vaddr = vaddr,
- .size = size,
- .paddr = *paddr,
- .type = ALIEN_PFN_MAP,
- };
- pr_debug("%s: success, paddr: %pap\n", __func__, paddr);
- return 0;
- }
- static long xvp_gup_virt_to_phys(struct xvp_file *xvp_file,
- unsigned long vaddr, unsigned long size,
- phys_addr_t *paddr,
- struct xrp_alien_mapping *mapping)
- {
- int ret;
- int i;
- int nr_pages;
- struct page **page;
- const struct xrp_address_map_entry *address_map;
- if (PFN_UP(vaddr + size) - PFN_DOWN(vaddr) > INT_MAX)
- return -EINVAL;
- nr_pages = PFN_UP(vaddr + size) - PFN_DOWN(vaddr);
- page = kmalloc(nr_pages * sizeof(void *), GFP_KERNEL);
- if (!page)
- return -ENOMEM;
- ret = get_user_pages_fast(vaddr, nr_pages, 1, page);
- if (ret < 0)
- goto out;
- if (ret < nr_pages) {
- pr_debug("%s: asked for %d pages, but got only %d\n",
- __func__, nr_pages, ret);
- nr_pages = ret;
- ret = -EINVAL;
- goto out_put;
- }
- address_map = xrp_get_address_mapping(&xvp_file->xvp->address_map,
- page_to_phys(page[0]));
- if (!address_map) {
- phys_addr_t addr = page_to_phys(page[0]);
- pr_debug("%s: untranslatable addr: %pap\n",
- __func__, &addr);
- ret = -EINVAL;
- goto out_put;
- }
- for (i = 1; i < nr_pages; ++i) {
- phys_addr_t addr;
- if (page[i] != page[i - 1] + 1) {
- pr_debug("%s: non-contiguous physical memory\n",
- __func__);
- ret = -EINVAL;
- goto out_put;
- }
- addr = page_to_phys(page[i]);
- if (xrp_compare_address(addr, address_map)) {
- pr_debug("%s: untranslatable addr: %pap\n",
- __func__, &addr);
- ret = -EINVAL;
- goto out_put;
- }
- }
- *paddr = __pfn_to_phys(page_to_pfn(page[0])) + (vaddr & ~PAGE_MASK);
- *mapping = (struct xrp_alien_mapping){
- .vaddr = vaddr,
- .size = size,
- .paddr = *paddr,
- .type = ALIEN_GUP,
- };
- ret = 0;
- pr_debug("%s: success, paddr: %pap\n", __func__, paddr);
- out_put:
- if (ret < 0)
- for (i = 0; i < nr_pages; ++i)
- put_page(page[i]);
- out:
- kfree(page);
- return ret;
- }
- static long _xrp_copy_user_phys(struct xvp *xvp,
- unsigned long vaddr, unsigned long size,
- phys_addr_t paddr, unsigned long flags,
- bool to_phys)
- {
- // if (pfn_valid(__phys_to_pfn(paddr))) {
- // struct page *page = pfn_to_page(__phys_to_pfn(paddr));
- // size_t page_offs = paddr & ~PAGE_MASK;
- // size_t offs;
- // if (!to_phys)
- // xrp_default_dma_sync_for_cpu(xvp, paddr, size, flags);
- // for (offs = 0; offs < size; ++page) {
- // void *p = kmap(page);
- // size_t sz = PAGE_SIZE - page_offs;
- // size_t copy_sz = sz;
- // unsigned long rc;
- // if (!p)
- // return -ENOMEM;
- // if (size - offs < copy_sz)
- // copy_sz = size - offs;
- // if (to_phys)
- // rc = copy_from_user(p + page_offs,
- // (void __user *)(vaddr + offs),
- // copy_sz);
- // else
- // rc = copy_to_user((void __user *)(vaddr + offs),
- // p + page_offs, copy_sz);
- // pr_debug("%s rc:%d,user addr :(%llx,%d) kernel:addr(%llx,%d) size:%d\n", __func__,rc,vaddr,offs,p,page_offs,copy_sz);
- // page_offs = 0;
- // offs += copy_sz;
- // kunmap(page);
- // if (rc)
- // return -EFAULT;
- // }
- // if (to_phys)
- // xrp_default_dma_sync_for_device(xvp, paddr, size, flags);
- // } else
- {
- void __iomem *p = ioremap(paddr, size);
- unsigned long rc;
- pr_debug("%s ioremap:to_phys %d-(%llx,%llx)\n", __func__,to_phys,paddr,p);
- if (!p) {
- dev_err(xvp->dev,
- "couldn't ioremap %pap x 0x%08x\n",
- &paddr, (u32)size);
- return -EINVAL;
- }
- if (to_phys)
- {
- rc = copy_from_user(__io_virt(p),
- (void __user *)vaddr, size);
- /*fix 5.10 kernel copy from vaddr in kernel to phy*/
- if(rc)
- {
- xrp_comm_write(p,(void *)vaddr,size);
- pr_debug("%s WR replease by copy to phy\n", __func__);
- rc =0 ;
- }
- }
- else
- rc = copy_to_user((void __user *)vaddr,
- __io_virt(p), size);
- pr_debug("%s rc:%d,user addr :(%llx) kernel:addr(%llx) size:%d\n", __func__,rc,vaddr,p,size);
- iounmap(p);
- if (rc)
- return -EFAULT;
- }
- return 0;
- }
- static long xrp_copy_user_to_phys(struct xvp *xvp,
- unsigned long vaddr, unsigned long size,
- phys_addr_t paddr, unsigned long flags)
- {
- return _xrp_copy_user_phys(xvp, vaddr, size, paddr, flags, true);
- }
- static long xrp_copy_user_from_phys(struct xvp *xvp,
- unsigned long vaddr, unsigned long size,
- phys_addr_t paddr, unsigned long flags)
- {
- return _xrp_copy_user_phys(xvp, vaddr, size, paddr, flags, false);
- }
- static long xvp_copy_virt_to_phys(struct xvp_file *xvp_file,
- unsigned long flags,
- unsigned long vaddr, unsigned long size,
- phys_addr_t *paddr,
- struct xrp_alien_mapping *mapping)
- {
- phys_addr_t phys;
- unsigned long align = clamp(vaddr & -vaddr, 16ul, PAGE_SIZE);
- unsigned long offset = vaddr & (align - 1);
- struct xrp_allocation *allocation;
- long rc;
- rc = xrp_allocate(xvp_file->xvp->pool,
- size + align, align, &allocation);
- if (rc < 0)
- return rc;
- phys = (allocation->start & -align) | offset;
- if (phys < allocation->start)
- phys += align;
- if (flags & XRP_FLAG_READ) {
- if (xrp_copy_user_to_phys(xvp_file->xvp,
- vaddr, size, phys, flags)) {
- xrp_allocation_put(allocation);
- return -EFAULT;
- }
- }
- *paddr = phys;
- *mapping = (struct xrp_alien_mapping){
- .vaddr = vaddr,
- .size = size,
- .paddr = *paddr,
- .allocation = allocation,
- .type = ALIEN_COPY,
- };
- pr_debug("%s: copying to pa: %pap\n", __func__, paddr);
- return 0;
- }
- static unsigned xvp_get_region_vma_count(unsigned long virt,
- unsigned long size,
- struct vm_area_struct *vma)
- {
- unsigned i;
- struct mm_struct *mm = current->mm;
- if (virt + size < virt)
- return 0;
- if (vma->vm_start > virt)
- return 0;
- if (vma->vm_start <= virt &&
- virt + size <= vma->vm_end)
- return 1;
- for (i = 2; ; ++i) {
- struct vm_area_struct *next_vma = find_vma(mm, vma->vm_end);
- if (!next_vma)
- return 0;
- if (next_vma->vm_start != vma->vm_end)
- return 0;
- vma = next_vma;
- if (virt + size <= vma->vm_end)
- return i;
- }
- return 0;
- }
- static long xrp_share_kernel(struct file *filp,
- unsigned long virt, unsigned long size,
- unsigned long flags, phys_addr_t *paddr,
- struct xrp_mapping *mapping)
- {
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- phys_addr_t phys = __pa(virt);
- long err = 0;
- pr_debug("%s: sharing kernel-only buffer: %pap\n", __func__, &phys);
- if (xrp_translate_to_dsp(&xvp->address_map, phys) ==
- XRP_NO_TRANSLATION) {
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- mm_segment_t oldfs = get_fs();
- set_fs(KERNEL_DS);
- #else
- mm_segment_t oldfs =force_uaccess_begin();
- #endif
- pr_debug("%s: untranslatable addr, making shadow copy\n",
- __func__);
-
- err = xvp_copy_virt_to_phys(xvp_file, flags,
- virt, size, paddr,
- &mapping->alien_mapping);
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- set_fs(oldfs);
- #else
- force_uaccess_end(oldfs);
- #endif
- mapping->type = XRP_MAPPING_ALIEN | XRP_MAPPING_KERNEL;
- } else {
- mapping->type = XRP_MAPPING_KERNEL;
- *paddr = phys;
- xrp_default_dma_sync_for_device(xvp, phys, size, flags);
- }
- pr_debug("%s: mapping = %p, mapping->type = %d\n",
- __func__, mapping, mapping->type);
- return err;
- }
- static bool vma_needs_cache_ops(struct vm_area_struct *vma)
- {
- pgprot_t prot = vma->vm_page_prot;
- return pgprot_val(prot) != pgprot_val(pgprot_noncached(prot)) &&
- pgprot_val(prot) != pgprot_val(pgprot_writecombine(prot));
- }
- /* Share blocks of memory, from host to IVP or back.
- *
- * When sharing to IVP return physical addresses in paddr.
- * Areas allocated from the driver can always be shared in both directions.
- * Contiguous 3rd party allocations need to be shared to IVP before they can
- * be shared back.
- */
- static long __xrp_share_block(struct file *filp,
- unsigned long virt, unsigned long size,
- unsigned long flags, phys_addr_t *paddr,
- struct xrp_mapping *mapping)
- {
- phys_addr_t phys = ~0ul;
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- struct mm_struct *mm = current->mm;
- struct vm_area_struct *vma = find_vma(mm, virt);
- bool do_cache = true;
- long rc = -EINVAL;
- if (!vma) {
- pr_debug("%s: no vma for vaddr/size = 0x%08lx/0x%08lx\n",
- __func__, virt, size);
- return -EINVAL;
- }
- /*
- * Region requested for sharing should be within single VMA.
- * That's true for the majority of cases, but sometimes (e.g.
- * sharing buffer in the beginning of .bss which shares a
- * file-mapped page with .data, followed by anonymous page)
- * region will cross multiple VMAs. Support it in the simplest
- * way possible: start with get_user_pages and use shadow copy
- * if that fails.
- */
- switch (xvp_get_region_vma_count(virt, size, vma)) {
- case 0:
- pr_debug("%s: bad vma for vaddr/size = 0x%08lx/0x%08lx\n",
- __func__, virt, size);
- pr_debug("%s: vma->vm_start = 0x%08lx, vma->vm_end = 0x%08lx\n",
- __func__, vma->vm_start, vma->vm_end);
- return -EINVAL;
- case 1:
- break;
- default:
- pr_debug("%s: multiple vmas cover vaddr/size = 0x%08lx/0x%08lx\n",
- __func__, virt, size);
- vma = NULL;
- break;
- }
- /*
- * And it need to be allocated from the same file descriptor, or
- * at least from a file descriptor managed by the XRP.
- */
- if (vma &&
- (vma->vm_file == filp || xrp_is_known_file(vma->vm_file))) {
- struct xvp_file *vm_file = vma->vm_file->private_data;
- struct xrp_allocation *xrp_allocation = vma->vm_private_data;
- phys = (vma->vm_pgoff << PAGE_SHIFT) +
- virt - vma->vm_start;
- pr_debug("%s: XRP allocation at 0x%08lx, paddr: %pap\n",
- __func__, virt, &phys);
- /*
- * If it was allocated from a different XRP file it may belong
- * to a different device and not be directly accessible.
- * Check if it is.
- */
- if (vma->vm_file != filp) {
- const struct xrp_address_map_entry *address_map =
- xrp_get_address_mapping(&xvp->address_map,
- phys);
- if (!address_map ||
- xrp_compare_address(phys + size - 1, address_map))
- pr_debug("%s: untranslatable addr: %pap\n",
- __func__, &phys);
- else
- rc = 0;
- } else {
- rc = 0;
- }
- if (rc == 0) {
- mapping->type = XRP_MAPPING_NATIVE;
- mapping->native.xrp_allocation = xrp_allocation;
- mapping->native.vaddr = virt;
- xrp_allocation_get(xrp_allocation);
- do_cache = vma_needs_cache_ops(vma);
- }
- }
- if (rc < 0) {
- struct xrp_alien_mapping *alien_mapping =
- &mapping->alien_mapping;
- unsigned long n_pages = PFN_UP(virt + size) - PFN_DOWN(virt);
- /* Otherwise this is alien allocation. */
- pr_debug("%s: non-XVP allocation at 0x%08lx\n",
- __func__, virt);
- /*
- * A range can only be mapped directly if it is either
- * uncached or HW-specific cache operations can handle it.
- */
- if (vma && vma->vm_flags & (VM_IO | VM_PFNMAP)) {
- rc = xvp_pfn_virt_to_phys(xvp_file, vma,
- virt, size,
- &phys,
- alien_mapping);
- if (rc == 0 && vma_needs_cache_ops(vma) &&
- !xrp_cacheable(xvp, PFN_DOWN(phys), n_pages)) {
- pr_debug("%s: needs unsupported cache mgmt\n",
- __func__);
- rc = -EINVAL;
- }
- } else {
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- up_read(&mm->mmap_sem);
- #else
- up_read(&mm->mmap_lock);
- #endif
- rc = xvp_gup_virt_to_phys(xvp_file, virt,
- size, &phys,
- alien_mapping);
- if (rc == 0 &&
- (!vma || vma_needs_cache_ops(vma)) &&
- !xrp_cacheable(xvp, PFN_DOWN(phys), n_pages)) {
- pr_debug("%s: needs unsupported cache mgmt\n",
- __func__);
- xrp_put_pages(phys, n_pages);
- rc = -EINVAL;
- }
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- down_read(&mm->mmap_sem);
- #else
- down_read(&mm->mmap_lock);
- #endif
- }
- if (rc == 0 && vma && !vma_needs_cache_ops(vma))
- do_cache = false;
- /*
- * If we couldn't share try to make a shadow copy.
- */
- if (rc < 0) {
- rc = xvp_copy_virt_to_phys(xvp_file, flags,
- virt, size, &phys,
- alien_mapping);
- do_cache = false;
- }
- /* We couldn't share it. Fail the request. */
- if (rc < 0) {
- pr_debug("%s: couldn't map virt to phys\n",
- __func__);
- return -EINVAL;
- }
- phys = alien_mapping->paddr +
- virt - alien_mapping->vaddr;
- mapping->type = XRP_MAPPING_ALIEN;
- }
- *paddr = phys;
- pr_debug("%s: mapping = %p, mapping->type = %d,do_cache = %d\n",
- __func__, mapping, mapping->type,do_cache);
- if (do_cache)
- xrp_dma_sync_for_device(xvp,
- virt, phys, size,
- flags);
- return 0;
- }
- static long xrp_writeback_alien_mapping(struct xvp_file *xvp_file,
- struct xrp_alien_mapping *alien_mapping,
- unsigned long flags)
- {
- struct page *page;
- size_t nr_pages;
- size_t i;
- long ret = 0;
- switch (alien_mapping->type) {
- case ALIEN_GUP:
- xrp_dma_sync_for_cpu(xvp_file->xvp,
- alien_mapping->vaddr,
- alien_mapping->paddr,
- alien_mapping->size,
- flags);
- pr_debug("%s: dirtying alien GUP @va = %p, pa = %pap\n",
- __func__, (void __user *)alien_mapping->vaddr,
- &alien_mapping->paddr);
- page = pfn_to_page(__phys_to_pfn(alien_mapping->paddr));
- nr_pages = PFN_UP(alien_mapping->vaddr + alien_mapping->size) -
- PFN_DOWN(alien_mapping->vaddr);
- for (i = 0; i < nr_pages; ++i)
- SetPageDirty(page + i);
- break;
- case ALIEN_COPY:
- pr_debug("%s: synchronizing alien copy @pa = %pap back to %p\n",
- __func__, &alien_mapping->paddr,
- (void __user *)alien_mapping->vaddr);
- if (xrp_copy_user_from_phys(xvp_file->xvp,
- alien_mapping->vaddr,
- alien_mapping->size,
- alien_mapping->paddr,
- flags))
- ret = -EINVAL;
- break;
- default:
- break;
- }
- return ret;
- }
- /*
- *
- */
- static long __xrp_unshare_block(struct file *filp, struct xrp_mapping *mapping,
- unsigned long flags)
- {
- long ret = 0;
- mm_segment_t oldfs ;
- if (mapping->type & XRP_MAPPING_KERNEL)
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- #else
- oldfs =force_uaccess_begin();
- #endif
- switch (mapping->type & ~XRP_MAPPING_KERNEL) {
- case XRP_MAPPING_NATIVE:
- if (flags & XRP_FLAG_WRITE) {
- struct xvp_file *xvp_file = filp->private_data;
- xrp_dma_sync_for_cpu(xvp_file->xvp,
- mapping->native.vaddr,
- mapping->native.xrp_allocation->start,
- mapping->native.xrp_allocation->size,
- flags);
- }
- xrp_allocation_put(mapping->native.xrp_allocation);
- break;
- case XRP_MAPPING_ALIEN:
- if (flags & XRP_FLAG_WRITE)
- ret = xrp_writeback_alien_mapping(filp->private_data,
- &mapping->alien_mapping,
- flags);
- xrp_alien_mapping_destroy(&mapping->alien_mapping);
- break;
- case XRP_MAPPING_KERNEL:
- break;
- default:
- break;
- }
- if (mapping->type & XRP_MAPPING_KERNEL)
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- set_fs(oldfs);
- #else
- force_uaccess_end(oldfs);
- #endif
- mapping->type = XRP_MAPPING_NONE;
- return ret;
- }
- static long xrp_ioctl_free(struct file *filp,
- struct xrp_ioctl_alloc __user *p)
- {
- struct mm_struct *mm = current->mm;
- struct xrp_ioctl_alloc xrp_ioctl_alloc;
- struct vm_area_struct *vma;
- unsigned long start;
- // pr_debug("%s: %p\n", __func__, p);
- if (copy_from_user(&xrp_ioctl_alloc, p, sizeof(*p)))
- return -EFAULT;
- start = xrp_ioctl_alloc.addr;
- // pr_debug("%s: virt_addr = 0x%08lx\n", __func__, start);
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- down_read(&mm->mmap_sem);
- #else
- down_read(&mm->mmap_lock);
- #endif
- vma = find_vma(mm, start);
- if (vma && vma->vm_file == filp &&
- vma->vm_start <= start && start < vma->vm_end) {
- size_t size;
- start = vma->vm_start;
- size = vma->vm_end - vma->vm_start;
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- up_read(&mm->mmap_sem);
- #else
- up_read(&mm->mmap_lock);
- #endif
- pr_debug("%s: 0x%lx x %zu\n", __func__, start, size);
- return vm_munmap(start, size);
- }
- // pr_debug("%s: no vma/bad vma for vaddr = 0x%08lx\n", __func__, start);
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- up_read(&mm->mmap_sem);
- #else
- up_read(&mm->mmap_lock);
- #endif
- return -EINVAL;
- }
- static long xvp_complete_cmd_irq(struct xvp *xvp, struct xrp_comm *comm,
- bool (*cmd_complete)(struct xrp_comm *p))
- {
- long timeout = firmware_command_timeout * HZ;
- if (cmd_complete(comm))
- return 0;
- if (xrp_panic_check(xvp))
- return -EBUSY;
- do {
- timeout = wait_for_completion_interruptible_timeout(&comm->completion,
- timeout);
- if (cmd_complete(comm))
- return 0;
- if (xrp_panic_check(xvp))
- return -EBUSY;
- } while (timeout > 0);
- if (timeout == 0)
- return -EBUSY;
- return timeout;
- }
- static long xvp_complete_cmd_poll(struct xvp *xvp, struct xrp_comm *comm,
- bool (*cmd_complete)(struct xrp_comm *p))
- {
- unsigned long deadline = jiffies + firmware_command_timeout * HZ;
- do {
- if (cmd_complete(comm))
- return 0;
- if (xrp_panic_check(xvp))
- return -EBUSY;
- schedule();
- } while (time_before(jiffies, deadline));
- return -EBUSY;
- }
- struct xrp_request {
- struct xrp_ioctl_queue ioctl_queue;
- size_t n_buffers;
- struct xrp_mapping *buffer_mapping;
- struct xrp_dsp_buffer *dsp_buffer;
- phys_addr_t in_data_phys;
- phys_addr_t out_data_phys;
- phys_addr_t dsp_buffer_phys;
- union {
- struct xrp_mapping in_data_mapping;
- u8 in_data[XRP_DSP_CMD_INLINE_DATA_SIZE];
- };
- union {
- struct xrp_mapping out_data_mapping;
- u8 out_data[XRP_DSP_CMD_INLINE_DATA_SIZE];
- };
- union {
- struct xrp_mapping dsp_buffer_mapping;
- struct xrp_dsp_buffer buffer_data[XRP_DSP_CMD_INLINE_BUFFER_COUNT];
- };
- u8 nsid[XRP_DSP_CMD_NAMESPACE_ID_SIZE];
- };
- static void xrp_unmap_request_nowb(struct file *filp, struct xrp_request *rq)
- {
- size_t n_buffers = rq->n_buffers;
- size_t i;
- if (rq->ioctl_queue.in_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE)
- __xrp_unshare_block(filp, &rq->in_data_mapping, 0);
- if (rq->ioctl_queue.out_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE)
- __xrp_unshare_block(filp, &rq->out_data_mapping, 0);
- for (i = 0; i < n_buffers; ++i)
- __xrp_unshare_block(filp, rq->buffer_mapping + i, 0);
- if (n_buffers > XRP_DSP_CMD_INLINE_BUFFER_COUNT)
- __xrp_unshare_block(filp, &rq->dsp_buffer_mapping, 0);
- if (n_buffers) {
- kfree(rq->buffer_mapping);
- if (n_buffers > XRP_DSP_CMD_INLINE_BUFFER_COUNT) {
- kfree(rq->dsp_buffer);
- }
- }
- }
- static long xrp_unmap_request(struct file *filp, struct xrp_request *rq)
- {
- size_t n_buffers = rq->n_buffers;
- size_t i;
- long ret = 0;
- long rc;
- if (rq->ioctl_queue.in_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE)
- __xrp_unshare_block(filp, &rq->in_data_mapping, XRP_FLAG_READ);
- if (rq->ioctl_queue.out_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE) {
- rc = __xrp_unshare_block(filp, &rq->out_data_mapping,
- XRP_FLAG_WRITE);
- if (rc < 0) {
- pr_debug("%s: out_data could not be unshared\n",
- __func__);
- ret = rc;
- }
- } else {
- pr_debug("%s: out_data <%s> to copied\n",
- __func__,rq->out_data);
- if (copy_to_user((void __user *)(unsigned long)rq->ioctl_queue.out_data_addr,
- rq->out_data,
- rq->ioctl_queue.out_data_size)) {
- pr_debug("%s: out_data could not be copied\n",
- __func__);
- ret = -EFAULT;
- }
- }
- if (n_buffers > XRP_DSP_CMD_INLINE_BUFFER_COUNT)
- __xrp_unshare_block(filp, &rq->dsp_buffer_mapping,
- XRP_FLAG_READ_WRITE);
- for (i = 0; i < n_buffers; ++i) {
- rc = __xrp_unshare_block(filp, rq->buffer_mapping + i,
- rq->dsp_buffer[i].flags);
- if (rc < 0) {
- pr_debug("%s: buffer %zd could not be unshared\n",
- __func__, i);
- ret = rc;
- }
- }
- if (n_buffers) {
- kfree(rq->buffer_mapping);
- if (n_buffers > XRP_DSP_CMD_INLINE_BUFFER_COUNT) {
- kfree(rq->dsp_buffer);
- }
- rq->n_buffers = 0;
- }
- return ret;
- }
- static long xrp_map_request(struct file *filp, struct xrp_request *rq,
- struct mm_struct *mm)
- {
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- struct xrp_ioctl_buffer __user *buffer;
- size_t n_buffers = rq->ioctl_queue.buffer_size /
- sizeof(struct xrp_ioctl_buffer);
- size_t i;
- long ret = 0;
- if ((rq->ioctl_queue.flags & XRP_QUEUE_FLAG_NSID) &&
- copy_from_user(rq->nsid,
- (void __user *)(unsigned long)rq->ioctl_queue.nsid_addr,
- sizeof(rq->nsid))) {
- pr_debug("%s: nsid could not be copied\n ", __func__);
- return -EINVAL;
- }
- rq->n_buffers = n_buffers;
- if (n_buffers) {
- rq->buffer_mapping =
- kzalloc(n_buffers * sizeof(*rq->buffer_mapping),
- GFP_KERNEL);
- if (n_buffers > XRP_DSP_CMD_INLINE_BUFFER_COUNT) {
- rq->dsp_buffer =
- kmalloc(n_buffers * sizeof(*rq->dsp_buffer),
- GFP_KERNEL);
- if (!rq->dsp_buffer) {
- kfree(rq->buffer_mapping);
- return -ENOMEM;
- }
- } else {
- rq->dsp_buffer = rq->buffer_data;
- }
- }
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- down_read(&mm->mmap_sem);
- #else
- down_read(&mm->mmap_lock);
- #endif
- if (rq->ioctl_queue.in_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE) {
- ret = __xrp_share_block(filp, rq->ioctl_queue.in_data_addr,
- rq->ioctl_queue.in_data_size,
- XRP_FLAG_READ, &rq->in_data_phys,
- &rq->in_data_mapping);
- if(ret < 0) {
- pr_debug("%s: in_data could not be shared\n",
- __func__);
- goto share_err;
- }
- } else {
- if (copy_from_user(rq->in_data,
- (void __user *)(unsigned long)rq->ioctl_queue.in_data_addr,
- rq->ioctl_queue.in_data_size)) {
- pr_debug("%s: in_data could not be copied\n",
- __func__);
- ret = -EFAULT;
- goto share_err;
- }
- }
- if (rq->ioctl_queue.out_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE) {
- ret = __xrp_share_block(filp, rq->ioctl_queue.out_data_addr,
- rq->ioctl_queue.out_data_size,
- XRP_FLAG_WRITE, &rq->out_data_phys,
- &rq->out_data_mapping);
- if (ret < 0) {
- pr_debug("%s: out_data could not be shared\n",
- __func__);
- goto share_err;
- }
- }
- buffer = (void __user *)(unsigned long)rq->ioctl_queue.buffer_addr;
- for (i = 0; i < n_buffers; ++i) {
- struct xrp_ioctl_buffer ioctl_buffer;
- phys_addr_t buffer_phys = ~0ul;
- if (copy_from_user(&ioctl_buffer, buffer + i,
- sizeof(ioctl_buffer))) {
- ret = -EFAULT;
- goto share_err;
- }
- if (ioctl_buffer.flags & XRP_FLAG_READ_WRITE) {
- ret = __xrp_share_block(filp, ioctl_buffer.addr,
- ioctl_buffer.size,
- ioctl_buffer.flags,
- &buffer_phys,
- rq->buffer_mapping + i);
- if (ret < 0) {
- pr_debug("%s: buffer %zd could not be shared\n",
- __func__, i);
- goto share_err;
- }
- }
- rq->dsp_buffer[i] = (struct xrp_dsp_buffer){
- .flags = ioctl_buffer.flags,
- .size = ioctl_buffer.size,
- .addr = xrp_translate_to_dsp(&xvp->address_map,
- buffer_phys),
- };
- }
- if (n_buffers > XRP_DSP_CMD_INLINE_BUFFER_COUNT) {
- ret = xrp_share_kernel(filp, (unsigned long)rq->dsp_buffer,
- n_buffers * sizeof(*rq->dsp_buffer),
- XRP_FLAG_READ_WRITE, &rq->dsp_buffer_phys,
- &rq->dsp_buffer_mapping);
- if(ret < 0) {
- pr_debug("%s: buffer descriptors could not be shared\n",
- __func__);
- goto share_err;
- }
- }
- share_err:
- #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
- up_read(&mm->mmap_sem);
- #else
- up_read(&mm->mmap_lock);
- #endif
- if (ret < 0)
- xrp_unmap_request_nowb(filp, rq);
- return ret;
- }
- static void xrp_fill_hw_request(struct xrp_dsp_cmd __iomem *cmd,
- struct xrp_request *rq,
- const struct xrp_address_map *map)
- {
- xrp_comm_write32(&cmd->in_data_size, rq->ioctl_queue.in_data_size);
- xrp_comm_write32(&cmd->out_data_size, rq->ioctl_queue.out_data_size);
- xrp_comm_write32(&cmd->buffer_size,
- rq->n_buffers * sizeof(struct xrp_dsp_buffer));
- if (rq->ioctl_queue.in_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE)
- xrp_comm_write32(&cmd->in_data_addr,
- xrp_translate_to_dsp(map, rq->in_data_phys));
- else
- xrp_comm_write(&cmd->in_data, rq->in_data,
- rq->ioctl_queue.in_data_size);
- if (rq->ioctl_queue.out_data_size > XRP_DSP_CMD_INLINE_DATA_SIZE)
- xrp_comm_write32(&cmd->out_data_addr,
- xrp_translate_to_dsp(map, rq->out_data_phys));
- if (rq->n_buffers > XRP_DSP_CMD_INLINE_BUFFER_COUNT)
- xrp_comm_write32(&cmd->buffer_addr,
- xrp_translate_to_dsp(map, rq->dsp_buffer_phys));
- else
- xrp_comm_write(&cmd->buffer_data, rq->dsp_buffer,
- rq->n_buffers * sizeof(struct xrp_dsp_buffer));
- if (rq->ioctl_queue.flags & XRP_QUEUE_FLAG_NSID)
- xrp_comm_write(&cmd->nsid, rq->nsid, sizeof(rq->nsid));
- #ifdef DEBUG
- {
- struct xrp_dsp_cmd dsp_cmd;
- xrp_comm_read(cmd, &dsp_cmd, sizeof(dsp_cmd));
- pr_debug("%s: cmd for DSP: %p: %*ph\n",
- __func__, cmd,
- (int)sizeof(dsp_cmd), &dsp_cmd);
- }
- #endif
- wmb();
- /* update flags */
- xrp_comm_write32(&cmd->flags,
- (rq->ioctl_queue.flags & ~XRP_DSP_CMD_FLAG_RESPONSE_VALID) |
- XRP_DSP_CMD_FLAG_REQUEST_VALID);
- }
- static long xrp_complete_hw_request(struct xrp_dsp_cmd __iomem *cmd,
- struct xrp_request *rq)
- {
- u32 flags = xrp_comm_read32(&cmd->flags);
- if (rq->ioctl_queue.out_data_size <= XRP_DSP_CMD_INLINE_DATA_SIZE)
- xrp_comm_read(&cmd->out_data, rq->out_data,
- rq->ioctl_queue.out_data_size);
- if (rq->n_buffers <= XRP_DSP_CMD_INLINE_BUFFER_COUNT)
- xrp_comm_read(&cmd->buffer_data, rq->dsp_buffer,
- rq->n_buffers * sizeof(struct xrp_dsp_buffer));
- xrp_comm_write32(&cmd->flags, 0);
- return (flags & XRP_DSP_CMD_FLAG_RESPONSE_DELIVERY_FAIL) ? -ENXIO : 0;
- }
- static long xrp_ioctl_submit_sync(struct file *filp,
- struct xrp_ioctl_queue __user *p)
- {
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- struct xrp_comm *queue = xvp->queue;
- struct xrp_request xrp_rq, *rq = &xrp_rq;
- long ret = 0;
- bool went_off = false;
- if (copy_from_user(&rq->ioctl_queue, p, sizeof(*p)))
- return -EFAULT;
- if (rq->ioctl_queue.flags & ~XRP_QUEUE_VALID_FLAGS) {
- dev_dbg(xvp->dev, "%s: invalid flags 0x%08x\n",
- __func__, rq->ioctl_queue.flags);
- return -EINVAL;
- }
- if (xvp->n_queues > 1) {
- unsigned n = (rq->ioctl_queue.flags & XRP_QUEUE_FLAG_PRIO) >>
- XRP_QUEUE_FLAG_PRIO_SHIFT;
- if (n >= xvp->n_queues)
- n = xvp->n_queues - 1;
- queue = xvp->queue_ordered[n];
- dev_dbg(xvp->dev, "%s: priority: %d -> %d\n",
- __func__, n, queue->priority);
- }
- ret = xrp_map_request(filp, rq, current->mm);
- if (ret < 0)
- return ret;
- if (loopback < LOOPBACK_NOIO) {
- int reboot_cycle;
- retry:
- mutex_lock(&queue->lock);
- reboot_cycle = atomic_read(&xvp->reboot_cycle);
- if (reboot_cycle != atomic_read(&xvp->reboot_cycle_complete)) {
- mutex_unlock(&queue->lock);
- goto retry;
- }
- if (xvp->off) {
- ret = -ENODEV;
- } else {
- xrp_fill_hw_request(queue->comm, rq, &xvp->address_map);
- xrp_send_device_irq(xvp);
- if (xvp->host_irq_mode) {
- ret = xvp_complete_cmd_irq(xvp, queue,
- xrp_cmd_complete);
- } else {
- ret = xvp_complete_cmd_poll(xvp, queue,
- xrp_cmd_complete);
- }
- xrp_panic_check(xvp);
- /* copy back inline data */
- if (ret == 0) {
- ret = xrp_complete_hw_request(queue->comm, rq);
- } else if (ret == -EBUSY && firmware_reboot &&
- atomic_inc_return(&xvp->reboot_cycle) ==
- reboot_cycle + 1) {
- int rc;
- unsigned i;
- dev_dbg(xvp->dev,
- "%s: restarting firmware...\n",
- __func__);
- for (i = 0; i < xvp->n_queues; ++i)
- if (xvp->queue + i != queue)
- mutex_lock(&xvp->queue[i].lock);
- rc = xrp_boot_firmware(xvp);
- atomic_set(&xvp->reboot_cycle_complete,
- atomic_read(&xvp->reboot_cycle));
- for (i = 0; i < xvp->n_queues; ++i)
- if (xvp->queue + i != queue)
- mutex_unlock(&xvp->queue[i].lock);
- if (rc < 0) {
- ret = rc;
- went_off = xvp->off;
- }
- }
- }
- mutex_unlock(&queue->lock);
- }
- if (ret == 0)
- ret = xrp_unmap_request(filp, rq);
- else if (!went_off)
- xrp_unmap_request_nowb(filp, rq);
- /*
- * Otherwise (if the DSP went off) all mapped buffers are leaked here.
- * There seems to be no way to recover them as we don't know what's
- * going on with the DSP; the DSP may still be reading and writing
- * this memory.
- */
- return ret;
- }
- // static void xrp_dam_buf_free(struct xrp_allocation *xrp_allocation)
- // {
- // dev_dbg(xvp->dev,"%s: release dma_buf allocation n",
- // __func__);
- // kfree(xrp_allocation->pool);
- // kfree(xrp_allocation);
- // return
- // }
- // static void xrp_dam_buf_offset(struct xrp_allocation *xrp_allocation)
- // {
- // return 0;
- // }
- // static const struct xrp_allocation_ops xrp_dma_buf_pool_ops = {
- // .alloc = NULL,
- // .free = xrp_dam_buf_free,
- // .free_pool = NULL,
- // .offset = xrp_dam_buf_offset,
- // };
- // static inline struct xrp_dma_buf_item * xrp_get_dma_buf_tail(struct xrp_dma_buf_item **list)
- // {
- // struct xrp_dma_buf_item ** item;
- // if(*list == NULLL)
- // return NULL;
- // for(item = list;(*item)->next != NULL;item= &(*item)->next)
- // {
- // ;
- // }
- // return *item;
- // }
- // static inline void xrp_dam_buf_add_item(struct xrp_dma_buf_item **list,struct xrp_dma_buf_item *entry)
- // {
- // struct xrp_dma_buf_item * item = xrp_get_dma_buf_tail(list);
- // if(item == NULL)
- // {
- // *list=entry;
- // }
- // else{
- // item->next = entry;
- // }
- // }
- // static inline int xrp_get_dma_buf_remove(struct xrp_dma_buf_item **list,struct xrp_dma_buf_item *entry)
- // {
- // {
- // struct xrp_dma_buf_item ** item;
- // for(item = list;(*item)->next != NULL;item= &(*item)->next)
- // {
- // struct xrp_dma_buf_item *cur = *item;
- // if();
- // }
- // }
- static void xrp_release_dma_buf_item(struct xrp_dma_buf_item * item)
- {
- spin_lock(&xrp_dma_buf_lock);
- if(--item->ref==0)
- {
- list_del(&item->link);
- kfree(item);
- }
- spin_unlock(&xrp_dma_buf_lock);
- }
- static long xrp_ioctl_dma_buf_import(struct file *filp,
- struct xrp_dma_buf __user *p)
- {
- long ret;
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- struct xrp_dma_buf xrp_dma_buf;
- struct dma_buf *dmabuf = NULL;
- struct sg_table *sgt = NULL;
- struct xrp_dma_buf_item *dma_buf_item=NULL;
- struct xrp_dma_buf_item *temp=NULL;
- struct dma_buf_attachment *attachment = NULL;
- // struct xrp_allocation *xrp_allocation;
- // struct xrp_private_pool *pool;
- int npages = 0;
- int i;
- struct scatterlist *s;
- unsigned int size = 0;
- dev_dbg(xvp->dev,"%s: entry\n", __func__);
- if (copy_from_user(&xrp_dma_buf, p, sizeof(*p)))
- {
- return -EFAULT;
- }
- dmabuf = dma_buf_get(xrp_dma_buf.fd);
- if(!dmabuf)
- {
- return -EFAULT;
- }
- spin_lock(&xrp_dma_buf_lock);
- list_for_each_entry(temp,&xvp->dma_buf_list, link)
- {
- if(temp->dmabuf == dmabuf)
- {
- dma_buf_item = temp;
- dma_buf_item->ref++;
- break;
- }
- }
- spin_unlock(&xrp_dma_buf_lock);
- if(dma_buf_item == NULL)
- {
- dev_dbg(xvp->dev,
- "%s: no exit same dma buf\n", __func__);
- attachment = dma_buf_attach(dmabuf, xvp->dev);
- if (!attachment)
- {
- goto One_Err;
- }
- sgt = dma_buf_map_attachment(attachment, xrp_dma_direction(xrp_dma_buf.flags));
- if (!sgt)
- {
- goto One_Err;
- }
- dma_buf_item = kzalloc(sizeof(*dma_buf_item),GFP_KERNEL);
- if(dma_buf_item == NULL)
- {
- goto One_Err;
- }
-
- dma_buf_item->attachment = attachment;
- dma_buf_item->dmabuf = dmabuf;
- dma_buf_item->sgt = sgt;
- dma_buf_item->ref = 1;
- spin_lock(&xrp_dma_buf_lock);
- list_add_tail(&dma_buf_item->link, &xvp->dma_buf_list);
- spin_unlock(&xrp_dma_buf_lock);
- }
- else
- {
- dev_dbg(xvp->dev,
- "%s: exit same dma buf\n", __func__);
- attachment = dma_buf_item->attachment;
- sgt = dma_buf_item->sgt;
- spin_lock(&xrp_dma_buf_lock);
- dma_buf_item->ref++;
- spin_unlock(&xrp_dma_buf_lock);
- }
- if(sgt->nents != 1)
- {
- dev_dbg(xvp->dev,
- "%s: sg table number (%d) is not 1, unspoort.\n",
- __func__,sgt->nents);
- goto Two_Err;
- }
- /* Prepare page array. */
- /* Get number of pages. */
- for_each_sg(sgt->sgl, s, sgt->orig_nents, i)
- {
- npages += (sg_dma_len(s) + PAGE_SIZE - 1) / PAGE_SIZE;
- size += sg_dma_len(s);
- }
-
- xrp_dma_buf.size = size;
- #ifdef VIDMEM_DMA_MAP
- xrp_dma_buf. = sg_dma_address(s) + j * PAGE_SIZE;
- #else
- // xrp_dma_buf.paddr = page_to_phys(nth_page(sg_page(s), 0));
- xrp_dma_buf.paddr = sg_phys(sgt->sgl);
- #endif
- // dev_dbg(xvp->dev,
- // "%s: import dma-buf phy addr:0x%lx,size:%d\n",
- // __func__,xrp_dma_buf.paddr,xrp_dma_buf.size);
- // xrp_allocation = kzalloc(sizeof(*xrp_allocation), GFP_KERNEL | __GFP_NORETRY);
- // if(!xrp_allocation)
- // {
- // return -ENOMEM;
- // }
- // pool = kmalloc(sizeof(*pool), GFP_KERNEL);
- // if(!pool)
- // {
- // kfree(xrp_allocation);
- // return -ENOMEM;
- // }
- // *pool = (struct xrp_private_pool){
- // .pool = {
- // .ops = &xrp_dma_buf_pool_ops,
- // },
- // .start = xrp_dma_buf.paddr ,
- // .size = xrp_dma_buf.size,
- // .free_list = NULL,
- // };
- // xrp_allocation->pool = pool;
- // xrp_allocation->start = xrp_dma_buf.paddr;
- // xrp_allocation->size = xrp_dma_buf.size;
-
- // xrp_allocation_queue(xvp_file, xrp_allocation);
- // xrp_dma_buf.addr = vm_mmap(filp, 0, xrp_allocation->size,
- // PROT_READ | PROT_WRITE, MAP_SHARED,
- // xrp_dam_buf_offset(xrp_allocation));
- struct file *export_filp = fget(xrp_dma_buf.fd);
- xrp_dma_buf.addr = vm_mmap(export_filp, 0, xrp_dma_buf.size,
- PROT_READ | PROT_WRITE, MAP_SHARED,0);
-
- fput(export_filp);
- dev_dbg(xvp->dev,
- "%s: import dma-buf phy addr:0x%lx,user addr:0x%lx,size:%d\n",
- __func__,xrp_dma_buf.paddr,xrp_dma_buf.addr,xrp_dma_buf.size);
- if (copy_to_user(p, &xrp_dma_buf, sizeof(*p))) {
- dma_buf_put(dmabuf);
- vm_munmap(xrp_dma_buf.addr , xrp_dma_buf.size);
- goto Two_Err;
- }
- return 0;
- Two_Err:
- xrp_release_dma_buf_item(dma_buf_item);
- One_Err:
- dma_buf_put(dmabuf);
- return -EINVAL;
- }
- static struct xrp_dma_buf_item * xrp_search_dma_buf( struct list_head *list,int fd)
- {
- struct xrp_dma_buf_item *loop;
- struct xrp_dma_buf_item *dma_buf_item=NULL;
- struct dma_buf *dmabuf = NULL;
- // pr_debug("%s: fd %d,entry\n", __func__,fd);
- dmabuf = dma_buf_get(fd);
- spin_lock(&xrp_dma_buf_lock);
- list_for_each_entry(loop,list, link)
- {
- if(loop->dmabuf == dmabuf)
- {
- dma_buf_item = loop;
- break;
- }
- }
- spin_unlock(&xrp_dma_buf_lock);
- dma_buf_put(dmabuf);
- pr_debug("%s: %p exit\n", __func__,fd,dma_buf_item);
- return dma_buf_item;
- }
- static long xrp_ioctl_dma_buf_release(struct file *filp,
- int __user *p)
- {
- int fd;
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- struct dma_buf *dmabuf = NULL;
- struct xrp_dma_buf_item *dma_buf_item=NULL;
- struct xrp_dma_buf_item *loop,*temp;
-
- if (copy_from_user(&fd, p, sizeof(*p)))
- {
- return -EFAULT;
- }
- // dmabuf = dma_buf_get(fd);
- // spin_lock(&xrp_dma_buf_lock);
- // list_for_each_entry_safe(loop, temp, &xvp->dma_buf_list, link)
- // {
- // if(loop->dmabuf == dmabuf)
- // {
- // dma_buf_item = loop;
- // if((--dma_buf_item->ref)==0)
- // list_del(&dma_buf_item);
- // break;
- // }
-
- // }
- // spin_unlock(&xrp_dma_buf_lock);
- // dma_buf_put(dmabuf);
- dma_buf_item = xrp_search_dma_buf(&xvp->dma_buf_list,fd);
- if(dma_buf_item == NULL)
- {
- return -EFAULT;
- }
-
- dma_buf_unmap_attachment(dma_buf_item->attachment, dma_buf_item->sgt, DMA_BIDIRECTIONAL);
- dma_buf_detach(dma_buf_item->dmabuf, dma_buf_item->attachment);
- dma_buf_put(dma_buf_item->dmabuf);
- xrp_release_dma_buf_item(dma_buf_item);
- return 0;
- }
- static long xrp_ioctl_dma_buf_sync(struct file *filp,
- struct xrp_dma_buf __user *p)
- {
- struct xvp_file *xvp_file = filp->private_data;
- struct xvp *xvp = xvp_file->xvp;
- struct xrp_dma_buf xrp_dma_buf;
- struct xrp_dma_buf_item *dma_buf_item=NULL;
- if (copy_from_user(&xrp_dma_buf, p, sizeof(*p)))
- {
- return -EFAULT;
- }
- dma_buf_item = xrp_search_dma_buf(&xvp->dma_buf_list,xrp_dma_buf.fd);
- if(dma_buf_item == NULL)
- {
- return -EFAULT;
- }
- switch(xrp_dma_buf.flags)
- {
- case XRP_FLAG_READ:
- dma_sync_single_for_cpu(xvp->dev, phys_to_dma(xvp->dev, xrp_dma_buf.paddr), xrp_dma_buf.size,
- xrp_dma_direction(xrp_dma_buf.flags));
- break;
- case XRP_FLAG_WRITE:
- dma_sync_single_for_device(xvp->dev, phys_to_dma(xvp->dev, xrp_dma_buf.paddr), xrp_dma_buf.size,
- xrp_dma_direction(xrp_dma_buf.flags));
- break;
- case XRP_FLAG_READ_WRITE:
- dma_sync_single_for_cpu(xvp->dev, phys_to_dma(xvp->dev, xrp_dma_buf.paddr), xrp_dma_buf.size,
- xrp_dma_direction(xrp_dma_buf.flags));
- dma_sync_single_for_device(xvp->dev, phys_to_dma(xvp->dev, xrp_dma_buf.paddr),xrp_dma_buf.size,
- xrp_dma_direction(xrp_dma_buf.flags));
- break;
- default:
- dev_dbg(xvp->dev,"%s: invalid type%x\n", __func__, xrp_dma_buf.flags);
- return -EFAULT;
- }
- return 0;
- }
- static long xvp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
- {
- long retval;
- pr_debug("%s: %x\n", __func__, cmd);
- switch(cmd){
- case XRP_IOCTL_ALLOC:
- retval = xrp_ioctl_alloc(filp,
- (struct xrp_ioctl_alloc __user *)arg);
- break;
- case XRP_IOCTL_FREE:
- retval = xrp_ioctl_free(filp,
- (struct xrp_ioctl_alloc __user *)arg);
- break;
- case XRP_IOCTL_QUEUE:
- case XRP_IOCTL_QUEUE_NS:
- retval = xrp_ioctl_submit_sync(filp,
- (struct xrp_ioctl_queue __user *)arg);
- break;
- case XRP_IOCTL_REPORT_CREATE:
- retval = xrp_ioctl_alloc_report(filp,
- (struct xrp_ioctl_alloc __user *)arg);
- break;
- case XRP_IOCTL_REPORT_RELEASE:
- retval = xrp_ioctl_release_report(filp,
- (struct xrp_ioctl_alloc __user *)arg);
- break;
- case XRP_IOCTL_DMABUF_IMPORT:
- retval = xrp_ioctl_dma_buf_import(filp,
- (struct xrp_dma_buf __user *)arg);
- break;
- case XRP_IOCTL_DMABUF_RELEASE:
- retval = xrp_ioctl_dma_buf_release(filp,
- (int __user *)arg);
- break;
- case XRP_IOCTL_DMABUF_SYNC:
- retval = xrp_ioctl_dma_buf_sync(filp,
- (struct xrp_dma_buf __user *)arg);
- break;
- default:
- retval = -EINVAL;
- break;
- }
- return retval;
- }
- static void xvp_vm_open(struct vm_area_struct *vma)
- {
- // pr_debug("%s\n", __func__);
- xrp_allocation_get(vma->vm_private_data);
- }
- static void xvp_vm_close(struct vm_area_struct *vma)
- {
- // pr_debug("%s\n", __func__);
- xrp_allocation_put(vma->vm_private_data);
- }
- static const struct vm_operations_struct xvp_vm_ops = {
- .open = xvp_vm_open,
- .close = xvp_vm_close,
- };
- static int xvp_mmap(struct file *filp, struct vm_area_struct *vma)
- {
- int err;
- struct xvp_file *xvp_file = filp->private_data;
- unsigned long pfn = vma->vm_pgoff;// + PFN_DOWN(xvp_file->xvp->pmem);
- struct xrp_allocation *xrp_allocation;
- xrp_allocation = xrp_allocation_dequeue(filp->private_data,
- pfn << PAGE_SHIFT,
- vma->vm_end - vma->vm_start);
- if (xrp_allocation) {
- struct xvp *xvp = xvp_file->xvp;
- pgprot_t prot = vma->vm_page_prot;
- if (!xrp_cacheable(xvp, pfn,
- PFN_DOWN(vma->vm_end - vma->vm_start))) {
- prot = pgprot_writecombine(prot);
- // prot = pgprot_noncached(prot);
- vma->vm_page_prot = prot;
- dev_dbg(xvp->dev,"%s cache atribution set \n", __func__);
- }
- err = remap_pfn_range(vma, vma->vm_start, pfn,
- vma->vm_end - vma->vm_start,
- prot);
- vma->vm_private_data = xrp_allocation;
- vma->vm_ops = &xvp_vm_ops;
- } else {
- pr_err("%s no valid xrp allocate for %lx:\n", __func__,pfn);
- err = -EINVAL;
- }
- return err;
- }
- static int xvp_open(struct inode *inode, struct file *filp)
- {
- struct xvp *xvp = container_of(filp->private_data,
- struct xvp, miscdev);
- struct xvp_file *xvp_file;
- int rc;
- dev_dbg(xvp->dev,"%s\n", __func__);
- rc = pm_runtime_get_sync(xvp->dev);
- if (rc < 0)
- {
- dev_err(xvp->dev,"%s:pm_runtime_get_sync fail:%d\n", __func__,rc);
- return rc;
- }
- xvp_file = devm_kzalloc(xvp->dev, sizeof(*xvp_file), GFP_KERNEL);
- if (!xvp_file) {
- dev_err(xvp->dev,"%s:malloc fail\n", __func__);
- pm_runtime_put_sync(xvp->dev);
- return -ENOMEM;
- }
- xvp_file->xvp = xvp;
- spin_lock_init(&xvp_file->busy_list_lock);
- filp->private_data = xvp_file;
- xrp_add_known_file(filp);
- return 0;
- }
- static int xvp_close(struct inode *inode, struct file *filp)
- {
- struct xvp_file *xvp_file = filp->private_data;
- pr_debug("%s\n", __func__);
- xrp_report_fasync_release(filp);
- xrp_remove_known_file(filp);
- pm_runtime_put_sync(xvp_file->xvp->dev);
- devm_kfree(xvp_file->xvp->dev, xvp_file);
- return 0;
- }
- static inline int xvp_enable_dsp(struct xvp *xvp)
- {
- if (loopback < LOOPBACK_NOMMIO &&
- xvp->hw_ops->enable)
- return xvp->hw_ops->enable(xvp->hw_arg);
- else
- return 0;
- }
- static inline void xvp_disable_dsp(struct xvp *xvp)
- {
- if (loopback < LOOPBACK_NOMMIO &&
- xvp->hw_ops->disable)
- xvp->hw_ops->disable(xvp->hw_arg);
- }
- static inline void xvp_remove_proc(struct xvp *xvp)
- {
- if( xvp->proc_dir)
- {
- if(xvp->panic_log)
- {
- xrp_remove_panic_log_proc(xvp->panic_log);
- xvp->panic_log =NULL;
- }
- // remove_proc_entry(xvp->proc_dir,NULL);
- proc_remove(xvp->proc_dir);
- }
- }
- static inline void xrp_set_resetVec(struct xvp *xvp,u32 addr)
- {
- if (loopback < LOOPBACK_NOMMIO &&
- xvp->hw_ops->set_reset_vector)
- xvp->hw_ops->set_reset_vector(xvp->hw_arg,addr);
- }
- static inline void xrp_reset_dsp(struct xvp *xvp)
- {
- if (loopback < LOOPBACK_NOMMIO &&
- xvp->hw_ops->reset)
- xvp->hw_ops->reset(xvp->hw_arg);
- }
- static inline void xrp_halt_dsp(struct xvp *xvp)
- {
- if (loopback < LOOPBACK_NOMMIO &&
- xvp->hw_ops->halt)
- xvp->hw_ops->halt(xvp->hw_arg);
- }
- static inline void xrp_release_dsp(struct xvp *xvp)
- {
- if (loopback < LOOPBACK_NOMMIO &&
- xvp->hw_ops->release)
- xvp->hw_ops->release(xvp->hw_arg);
- }
- static int xrp_boot_firmware(struct xvp *xvp)
- {
- int ret;
- u32 fm_entry_point=0;
- struct xrp_dsp_sync_v1 __iomem *shared_sync = xvp->comm;
- // dev_dbg(xvp->dev,"%s",__func__);
- //#if 1 //LOAD_MODE_MANUAL load release dsp by xplorer
- if(load_mode == LOAD_MODE_AUTO)
- {
- xrp_halt_dsp(xvp);
- //xrp_reset_dsp(xvp);
- if (xvp->firmware_name) {
- if (loopback < LOOPBACK_NOFIRMWARE) {
- ret = xrp_request_firmware(xvp,&fm_entry_point);
- if (ret < 0)
- return ret;
- }
- if (loopback < LOOPBACK_NOIO) {
- xrp_comm_write32(&shared_sync->sync, XRP_DSP_SYNC_IDLE);
- mb();
- }
- // fm_entry_point = xrp_get_firmware_entry_addr(xvp);
- dev_dbg(xvp->dev,"%s,firmware entry point :%x\n",__func__,fm_entry_point);
- if(fm_entry_point)
- {
- xrp_set_resetVec(xvp,fm_entry_point);
- }
- }
- xrp_reset_dsp(xvp);
- }
- xrp_release_dsp(xvp);
- //#endif
- if (loopback < LOOPBACK_NOIO) {
- ret = xrp_synchronize(xvp);
- if (ret < 0) {
- xrp_halt_dsp(xvp);
- dev_err(xvp->dev,
- "%s: couldn't synchronize with the DSP core\n",
- __func__);
- dev_err(xvp->dev,
- "XRP device will not use the DSP until the driver is rebound to this device\n");
- xvp->off = true;
- return ret;
- }
- }
- return 0;
- }
- static const struct file_operations xvp_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .unlocked_ioctl = xvp_ioctl,
- #ifdef CONFIG_COMPAT
- .compat_ioctl = xvp_ioctl,
- #endif
- .mmap = xvp_mmap,
- .open = xvp_open,
- .fasync = xrp_report_fasync,
- .release = xvp_close,
- };
- int xrp_runtime_suspend(struct device *dev)
- {
- struct xvp *xvp = dev_get_drvdata(dev);
- xrp_halt_dsp(xvp);
- xrp_reset_dsp(xvp);
- xvp_disable_dsp(xvp);
- // release_firmware(xvp->firmware);
- return 0;
- }
- EXPORT_SYMBOL(xrp_runtime_suspend);
- int xrp_runtime_resume(struct device *dev)
- {
- struct xvp *xvp = dev_get_drvdata(dev);
- unsigned i;
- int ret = 0;
- for (i = 0; i < xvp->n_queues; ++i)
- mutex_lock(&xvp->queue[i].lock);
- if (xvp->off)
- goto out;
- ret = xvp_enable_dsp(xvp);
- if (ret < 0) {
- dev_err(xvp->dev, "couldn't enable DSP\n");
- goto out;
- }
- ret = xrp_boot_firmware(xvp);
- if (ret < 0)
- xvp_disable_dsp(xvp);
- out:
- for (i = 0; i < xvp->n_queues; ++i)
- mutex_unlock(&xvp->queue[i].lock);
- return ret;
- }
- EXPORT_SYMBOL(xrp_runtime_resume);
- static int xrp_init_regs_v0(struct platform_device *pdev, struct xvp *xvp,int mem_idx)
- {
- struct resource res;
- struct device_node *np;
- int ret = 0;
- np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
- if (!np) {
- dev_err(&pdev->dev, "No memory-region specified\n");
- return -EINVAL;
- }
- ret = of_address_to_resource(np, 0, &res);
- dev_dbg(xvp->dev,"%s:dsp runing addr 0x%llx,size:0x%x\n", __func__,
- res.start,resource_size(&res));
- ret = of_address_to_resource(np, 1, &res);
- if (ret)
- {
- dev_dbg(xvp->dev,"%s:get comm region fail\n", __func__);
- return -ENODEV;
- }
- xvp->comm_phys = res.start;
- xvp->comm = devm_ioremap_resource(&pdev->dev, &res);
- dev_dbg(xvp->dev,"%s:xvp->comm =0x%p, phy_addr base=0x%llx\n", __func__,
- xvp->comm, xvp->comm_phys);
- // mem = platform_get_resource(pdev, IORESOURCE_MEM, mem_idx);
- ret = of_address_to_resource(np, 2, &res);
- if(ret)
- {
- dev_dbg(xvp->dev,"%s:get paic region fail:%d\n", __func__,ret);
- }else
- {
- xvp->panic_phy = res.start;
- xvp->panic = devm_ioremap_resource(&pdev->dev, &res);
- xvp->panic_size = resource_size(&res);
- if(xvp->panic)
- {
- dev_dbg(xvp->dev,"%s:panic=0x%p, panic phy base=0x%llx,size:%d\n", __func__,
- xvp->panic, xvp->panic_phy,xvp->panic_size);
- }else
- {
- dev_warn(xvp->dev,"%s:get paic region fail\n", __func__);
- }
- }
- ret = of_address_to_resource(np, 3, &res);
- if (ret)
- {
- dev_dbg(xvp->dev,"%s:get memory pool region fail\n", __func__);
- return -ENODEV;
- }
- xvp->pmem = res.start;
- xvp->shared_size = resource_size(&res);
- dev_dbg(xvp->dev,"%s,memory pool phy_addr base=0x%llx,size:0x%x\n", __func__,
- xvp->pmem, xvp->shared_size);
- return xrp_init_private_pool(&xvp->pool, xvp->pmem,
- xvp->shared_size);
- }
- static int xrp_init_regs_v1(struct platform_device *pdev, struct xvp *xvp,int mem_idx)
- {
- struct resource *mem;
- struct resource r;
- mem = platform_get_resource(pdev, IORESOURCE_MEM, mem_idx);
- if (!mem)
- return -ENODEV;
- if (resource_size(mem) < 2 * PAGE_SIZE) {
- dev_err(xvp->dev,
- "%s: shared memory size is too small\n",
- __func__);
- return -ENOMEM;
- }
- xvp->comm_phys = mem->start;
- xvp->pmem = mem->start + PAGE_SIZE;
- xvp->shared_size = resource_size(mem) - PAGE_SIZE;
- r = *mem;
- r.end = r.start + PAGE_SIZE;
- xvp->comm = devm_ioremap_resource(&pdev->dev, &r);
- return xrp_init_private_pool(&xvp->pool, xvp->pmem,
- xvp->shared_size);
- }
- static bool xrp_translate_base_mimo_to_dsp(struct xvp *xvp)
- {
- if(!xvp->hw_ops->get_base_mimo || !xvp->hw_ops->get_hw_sync_data )
- {
- return true;
- }
- phys_addr_t mimo_addr = xvp->hw_ops->get_base_mimo(xvp->hw_arg);
-
- u32 device_mimo_addr = xrp_translate_to_dsp(&xvp->address_map, mimo_addr);
- if(device_mimo_addr==XRP_NO_TRANSLATION)
- {
- dev_err(xvp->dev,
- "%s: 0x%x translate to dsp address fail\n",
- __func__,mimo_addr);
- return false;
- }
- xvp->hw_ops->update_device_base(xvp->hw_arg,device_mimo_addr);
- dev_dbg(xvp->dev,
- "%s: Base mimo translate to dsp address \n",__func__);
- return true;
- }
- static int xrp_init_regs_cma(struct platform_device *pdev, struct xvp *xvp,int mem_idx)
- {
- dma_addr_t comm_phys;
- if (of_reserved_mem_device_init(xvp->dev) < 0)
- return -ENODEV;
- xvp->comm = dma_alloc_attrs(xvp->dev, PAGE_SIZE, &comm_phys,
- GFP_KERNEL, 0);
- if (!xvp->comm)
- return -ENOMEM;
- xvp->comm_phys = dma_to_phys(xvp->dev, comm_phys);
- return xrp_init_cma_pool(&xvp->pool, xvp->dev);
- }
- static int compare_queue_priority(const void *a, const void *b)
- {
- const void * const *ppa = a;
- const void * const *ppb = b;
- const struct xrp_comm *pa = *ppa, *pb = *ppb;
- if (pa->priority == pb->priority)
- return 0;
- else
- return pa->priority < pb->priority ? -1 : 1;
- }
- static long xrp_init_common(struct platform_device *pdev,
- enum xrp_init_flags init_flags,
- const struct xrp_hw_ops *hw_ops, void *hw_arg,
- int mem_idx,
- int (*xrp_init_regs)(struct platform_device *pdev,
- struct xvp *xvp,int mem_idx))
- {
- long ret;
- char nodename[sizeof("xvp") + 3 * sizeof(int)];
- struct xvp *xvp;
- int nodeid;
- unsigned i;
- u32 value;
- char dir_name[32];
- xvp = devm_kzalloc(&pdev->dev, sizeof(*xvp), GFP_KERNEL);
- if (!xvp) {
- ret = -ENOMEM;
- goto err;
- }
- xvp->reporter = NULL;
- xvp->dev = &pdev->dev;
- xvp->hw_ops = hw_ops;
- xvp->hw_arg = hw_arg;
- if (init_flags & XRP_INIT_USE_HOST_IRQ)
- xvp->host_irq_mode = true;
- platform_set_drvdata(pdev, xvp);
- ret = xrp_init_regs(pdev, xvp,mem_idx);
- if (ret < 0)
- goto err;
- dev_dbg(xvp->dev,"%s: comm = %pap/%p\n", __func__, &xvp->comm_phys, xvp->comm);
- dev_dbg(xvp->dev,"%s: xvp->pmem = %pap\n", __func__, &xvp->pmem);
- // writel(0xdeadbeef,xvp->comm+0x4);
- // value = readl(xvp->comm+0x4);
- // pr_debug("offset=04, value is:0x%08x\n",value);
- ret = xrp_init_address_map(xvp->dev, &xvp->address_map);
- if (ret < 0)
- goto err_free_pool;
- if(false ==xrp_translate_base_mimo_to_dsp(xvp))
- {
- goto err_free_map;
- }
- ret = device_property_read_u32_array(xvp->dev, "queue-priority",
- NULL, 0);
- if (ret > 0) {
- xvp->n_queues = ret;
- xvp->queue_priority = devm_kmalloc(&pdev->dev,
- ret * sizeof(u32),
- GFP_KERNEL);
- if (xvp->queue_priority == NULL)
- goto err_free_pool;
- ret = device_property_read_u32_array(xvp->dev,
- "queue-priority",
- xvp->queue_priority,
- xvp->n_queues);
- if (ret < 0)
- goto err_free_pool;
- dev_dbg(xvp->dev,
- "multiqueue (%d) configuration, queue priorities:\n",
- xvp->n_queues);
- for (i = 0; i < xvp->n_queues; ++i)
- dev_dbg(xvp->dev, " %d\n", xvp->queue_priority[i]);
- } else {
- xvp->n_queues = 1;
- }
- xvp->queue = devm_kmalloc(&pdev->dev,
- xvp->n_queues * sizeof(*xvp->queue),
- GFP_KERNEL);
- xvp->queue_ordered = devm_kmalloc(&pdev->dev,
- xvp->n_queues * sizeof(*xvp->queue_ordered),
- GFP_KERNEL);
- if (xvp->queue == NULL ||
- xvp->queue_ordered == NULL)
- goto err_free_pool;
- for (i = 0; i < xvp->n_queues; ++i) {
- mutex_init(&xvp->queue[i].lock);
- xvp->queue[i].comm = xvp->comm + XRP_DSP_CMD_STRIDE * i;
- init_completion(&xvp->queue[i].completion);
- if (xvp->queue_priority)
- xvp->queue[i].priority = xvp->queue_priority[i];
- xvp->queue_ordered[i] = xvp->queue + i;
- }
- sort(xvp->queue_ordered, xvp->n_queues, sizeof(*xvp->queue_ordered),
- compare_queue_priority, NULL);
- if (xvp->n_queues > 1) {
- dev_dbg(xvp->dev, "SW -> HW queue priority mapping:\n");
- for (i = 0; i < xvp->n_queues; ++i) {
- dev_dbg(xvp->dev, " %d -> %d\n",
- i, xvp->queue_ordered[i]->priority);
- }
- }
- ret = device_property_read_string(xvp->dev, "firmware-name",
- &xvp->firmware_name);
- if (ret == -EINVAL || ret == -ENODATA) {
- dev_dbg(xvp->dev,
- "no firmware-name property, not loading firmware\n");
- } else if (ret < 0) {
- dev_err(xvp->dev, "invalid firmware name (%ld)\n", ret);
- goto err_free_map;
- }
- nodeid = ida_simple_get(&xvp_nodeid, 0, 0, GFP_KERNEL);
- if (nodeid < 0) {
- ret = nodeid;
- goto err_free_map;
- }
- sprintf(dir_name,"dsp%d_proc",nodeid);
- xvp->proc_dir = proc_mkdir(dir_name, NULL);
- if (NULL != xvp->proc_dir)
- {
- xvp->panic_log = xrp_create_panic_log_proc(xvp->proc_dir,xvp->panic,xvp->panic_size);
- }
- else
- {
- dev_err(xvp->dev, "create %s fail\n", dir_name);
- goto err_free_id;
- }
- pm_runtime_enable(xvp->dev);
- if (!pm_runtime_enabled(xvp->dev)) {
- ret = xrp_runtime_resume(xvp->dev);
- if (ret)
- goto err_pm_disable;
- }else
- {
- ret = xrp_runtime_resume(xvp->dev);
- if (ret)
- goto err_proc_remove;
- // xvp_enable_dsp(xvp);
- xrp_runtime_suspend(xvp->dev);
- }
- xvp->nodeid = nodeid;
- sprintf(nodename, "xvp%u", nodeid);
- xvp->miscdev = (struct miscdevice){
- .minor = MISC_DYNAMIC_MINOR,
- .name = devm_kstrdup(&pdev->dev, nodename, GFP_KERNEL),
- .nodename = devm_kstrdup(&pdev->dev, nodename, GFP_KERNEL),
- .fops = &xvp_fops,
- };
- ret = misc_register(&xvp->miscdev);
- if (ret < 0)
- goto err_pm_disable;
- // xrp_device_heartbeat_init(xvp);
-
- INIT_LIST_HEAD(&xvp->dma_buf_list);
- return PTR_ERR(xvp);
- err_pm_disable:
- pm_runtime_disable(xvp->dev);
- err_proc_remove:
- xvp_remove_proc(xvp);
- err_free_id:
- ida_simple_remove(&xvp_nodeid, nodeid);
- err_free_map:
- xrp_free_address_map(&xvp->address_map);
- err_free_pool:
- xrp_free_pool(xvp->pool);
- if (xvp->comm_phys && !xvp->pmem) {
- dma_free_attrs(xvp->dev, PAGE_SIZE, xvp->comm,
- phys_to_dma(xvp->dev, xvp->comm_phys), 0);
- }
- err:
- dev_err(&pdev->dev, "%s: ret = %ld\n", __func__, ret);
- return ret;
- }
- typedef long xrp_init_function(struct platform_device *pdev,
- enum xrp_init_flags flags,
- const struct xrp_hw_ops *hw_ops, void *hw_arg,int mem_idx);
- xrp_init_function xrp_init;
- long xrp_init(struct platform_device *pdev, enum xrp_init_flags flags,
- const struct xrp_hw_ops *hw_ops, void *hw_arg,int mem_idx)
- {
- return xrp_init_common(pdev, flags, hw_ops, hw_arg, mem_idx,xrp_init_regs_v0);
- }
- EXPORT_SYMBOL(xrp_init);
- xrp_init_function xrp_init_v1;
- long xrp_init_v1(struct platform_device *pdev, enum xrp_init_flags flags,
- const struct xrp_hw_ops *hw_ops, void *hw_arg,int mem_idx)
- {
- return xrp_init_common(pdev, flags, hw_ops, hw_arg, mem_idx,xrp_init_regs_v1);
- }
- EXPORT_SYMBOL(xrp_init_v1);
- xrp_init_function xrp_init_cma;
- long xrp_init_cma(struct platform_device *pdev, enum xrp_init_flags flags,
- const struct xrp_hw_ops *hw_ops, void *hw_arg,int mem_idx)
- {
- return xrp_init_common(pdev, flags, hw_ops, hw_arg, mem_idx,xrp_init_regs_cma);
- }
- EXPORT_SYMBOL(xrp_init_cma);
- int xrp_deinit(struct platform_device *pdev)
- {
- struct xvp *xvp = platform_get_drvdata(pdev);
- pm_runtime_disable(xvp->dev);
- if (!pm_runtime_status_suspended(xvp->dev))
- xrp_runtime_suspend(xvp->dev);
- // xvp_clear_dsp(xvp);
- xvp_remove_proc(xvp);
- dev_dbg(xvp->dev,"%s:phase 1\n",__func__);
- misc_deregister(&xvp->miscdev);
- dev_dbg(xvp->dev,"%s:phase 2\n",__func__);
- // release_firmware(xvp->firmware);
- // dev_dbg(xvp->dev,"%s:phase 3\n",__func__);
- xrp_free_pool(xvp->pool);
- if (xvp->comm_phys && !xvp->pmem) {
- dma_free_attrs(xvp->dev, PAGE_SIZE, xvp->comm,
- phys_to_dma(xvp->dev, xvp->comm_phys), 0);
- }
- dev_dbg(xvp->dev,"%s:phase 3\n",__func__);
- xrp_free_address_map(&xvp->address_map);
- dev_dbg(xvp->dev,"%s:phase 4\n",__func__);
- if(!ida_is_empty(&xvp_nodeid))
- {
- ida_simple_remove(&xvp_nodeid, xvp->nodeid);
- dev_dbg(xvp->dev,"%s:phase 5\n",__func__);
- }
- return 0;
- }
- EXPORT_SYMBOL(xrp_deinit);
- int xrp_deinit_hw(struct platform_device *pdev, void **hw_arg)
- {
- if (hw_arg) {
- struct xvp *xvp = platform_get_drvdata(pdev);
- *hw_arg = xvp->hw_arg;
- }
- return xrp_deinit(pdev);
- }
- EXPORT_SYMBOL(xrp_deinit_hw);
- static void *get_hw_sync_data(void *hw_arg, size_t *sz)
- {
- void *p = kzalloc(64, GFP_KERNEL);
- *sz = 64;
- return p;
- }
- static const struct xrp_hw_ops hw_ops = {
- .get_hw_sync_data = get_hw_sync_data,
- };
- #ifdef CONFIG_OF
- static const struct of_device_id xrp_of_match[] = {
- {
- .compatible = "cdns,xrp",
- .data = xrp_init,
- }, {
- .compatible = "cdns,xrp,v1",
- .data = xrp_init_v1,
- }, {
- .compatible = "cdns,xrp,cma",
- .data = xrp_init_cma,
- }, {},
- };
- MODULE_DEVICE_TABLE(of, xrp_of_match);
- #endif
- #ifdef CONFIG_ACPI
- static const struct acpi_device_id xrp_acpi_match[] = {
- { "CXRP0001", 0 },
- { },
- };
- MODULE_DEVICE_TABLE(acpi, xrp_acpi_match);
- #endif
- static int xrp_probe(struct platform_device *pdev)
- {
- long ret = -EINVAL;
- #ifdef CONFIG_OF
- const struct of_device_id *match;
- match = of_match_device(xrp_of_match, &pdev->dev);
- if (match) {
- xrp_init_function *init = match->data;
- ret = init(pdev, 0, &hw_ops, NULL,0);
- return IS_ERR_VALUE(ret) ? ret : 0;
- } else {
- pr_debug("%s: no OF device match found\n", __func__);
- }
- #endif
- #ifdef CONFIG_ACPI
- ret = xrp_init_v1(pdev, 0, &hw_ops, NULL,2);
- if (!IS_ERR_VALUE(ret)) {
- struct xrp_address_map_entry *entry;
- struct xvp *xvp = ERR_PTR(ret);
- ret = 0;
- /*
- * On ACPI system DSP can currently only access
- * its own shared memory.
- */
- entry = xrp_get_address_mapping(&xvp->address_map,
- xvp->comm_phys);
- if (entry) {
- entry->src_addr = xvp->comm_phys;
- entry->dst_addr = (u32)xvp->comm_phys;
- entry->size = (u32)xvp->shared_size + PAGE_SIZE;
- } else {
- dev_err(xvp->dev,
- "%s: couldn't find mapping for shared memory\n",
- __func__);
- ret = -EINVAL;
- }
- }
- #endif
- return ret;
- }
- static int xrp_remove(struct platform_device *pdev)
- {
- return xrp_deinit(pdev);
- }
- static const struct dev_pm_ops xrp_pm_ops = {
- SET_RUNTIME_PM_OPS(xrp_runtime_suspend,
- xrp_runtime_resume, NULL)
- };
- static struct platform_driver xrp_driver = {
- .probe = xrp_probe,
- .remove = xrp_remove,
- .driver = {
- .name = DRIVER_NAME,
- .of_match_table = of_match_ptr(xrp_of_match),
- .acpi_match_table = ACPI_PTR(xrp_acpi_match),
- .pm = &xrp_pm_ops,
- },
- };
- module_platform_driver(xrp_driver);
- MODULE_AUTHOR("T-HEAD");
- MODULE_DESCRIPTION("XRP: Linux device driver for Xtensa Remote Processing");
- MODULE_LICENSE("Dual MIT/GPL");
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