diff options
Diffstat (limited to 'kernel/drivers/misc/mic/host')
| -rw-r--r-- | kernel/drivers/misc/mic/host/Makefile | 1 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_boot.c | 551 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_debugfs.c | 123 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_device.h | 97 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_fops.c | 4 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_intr.c | 46 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_intr.h | 3 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_main.c | 221 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_smpt.c | 37 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_smpt.h | 1 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_sysfs.c | 459 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_virtio.c | 23 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_virtio.h | 2 | ||||
| -rw-r--r-- | kernel/drivers/misc/mic/host/mic_x100.c | 49 |
14 files changed, 473 insertions, 1144 deletions
diff --git a/kernel/drivers/misc/mic/host/Makefile b/kernel/drivers/misc/mic/host/Makefile index c2197f999..004d3db0f 100644 --- a/kernel/drivers/misc/mic/host/Makefile +++ b/kernel/drivers/misc/mic/host/Makefile @@ -5,7 +5,6 @@ obj-$(CONFIG_INTEL_MIC_HOST) += mic_host.o mic_host-objs := mic_main.o mic_host-objs += mic_x100.o -mic_host-objs += mic_sysfs.o mic_host-objs += mic_smpt.o mic_host-objs += mic_intr.o mic_host-objs += mic_boot.o diff --git a/kernel/drivers/misc/mic/host/mic_boot.c b/kernel/drivers/misc/mic/host/mic_boot.c index d9fa609da..7845564df 100644 --- a/kernel/drivers/misc/mic/host/mic_boot.c +++ b/kernel/drivers/misc/mic/host/mic_boot.c @@ -21,14 +21,197 @@ #include <linux/delay.h> #include <linux/firmware.h> #include <linux/pci.h> - +#include <linux/kmod.h> #include <linux/mic_common.h> #include <linux/mic_bus.h> +#include "../bus/scif_bus.h" #include "../common/mic_dev.h" #include "mic_device.h" #include "mic_smpt.h" #include "mic_virtio.h" +static inline struct mic_device *scdev_to_mdev(struct scif_hw_dev *scdev) +{ + return dev_get_drvdata(scdev->dev.parent); +} + +static void *__mic_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + struct dma_attrs *attrs) +{ + struct scif_hw_dev *scdev = dev_get_drvdata(dev); + struct mic_device *mdev = scdev_to_mdev(scdev); + dma_addr_t tmp; + void *va = kmalloc(size, gfp); + + if (va) { + tmp = mic_map_single(mdev, va, size); + if (dma_mapping_error(dev, tmp)) { + kfree(va); + va = NULL; + } else { + *dma_handle = tmp; + } + } + return va; +} + +static void __mic_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) +{ + struct scif_hw_dev *scdev = dev_get_drvdata(dev); + struct mic_device *mdev = scdev_to_mdev(scdev); + + mic_unmap_single(mdev, dma_handle, size); + kfree(vaddr); +} + +static dma_addr_t +__mic_dma_map_page(struct device *dev, struct page *page, unsigned long offset, + size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + void *va = phys_to_virt(page_to_phys(page)) + offset; + struct scif_hw_dev *scdev = dev_get_drvdata(dev); + struct mic_device *mdev = scdev_to_mdev(scdev); + + return mic_map_single(mdev, va, size); +} + +static void +__mic_dma_unmap_page(struct device *dev, dma_addr_t dma_addr, + size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + struct scif_hw_dev *scdev = dev_get_drvdata(dev); + struct mic_device *mdev = scdev_to_mdev(scdev); + + mic_unmap_single(mdev, dma_addr, size); +} + +static int __mic_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + struct scif_hw_dev *scdev = dev_get_drvdata(dev); + struct mic_device *mdev = scdev_to_mdev(scdev); + struct scatterlist *s; + int i, j, ret; + dma_addr_t da; + + ret = dma_map_sg(&mdev->pdev->dev, sg, nents, dir); + if (ret <= 0) + return 0; + + for_each_sg(sg, s, nents, i) { + da = mic_map(mdev, sg_dma_address(s) + s->offset, s->length); + if (!da) + goto err; + sg_dma_address(s) = da; + } + return nents; +err: + for_each_sg(sg, s, i, j) { + mic_unmap(mdev, sg_dma_address(s), s->length); + sg_dma_address(s) = mic_to_dma_addr(mdev, sg_dma_address(s)); + } + dma_unmap_sg(&mdev->pdev->dev, sg, nents, dir); + return 0; +} + +static void __mic_dma_unmap_sg(struct device *dev, + struct scatterlist *sg, int nents, + enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + struct scif_hw_dev *scdev = dev_get_drvdata(dev); + struct mic_device *mdev = scdev_to_mdev(scdev); + struct scatterlist *s; + dma_addr_t da; + int i; + + for_each_sg(sg, s, nents, i) { + da = mic_to_dma_addr(mdev, sg_dma_address(s)); + mic_unmap(mdev, sg_dma_address(s), s->length); + sg_dma_address(s) = da; + } + dma_unmap_sg(&mdev->pdev->dev, sg, nents, dir); +} + +static struct dma_map_ops __mic_dma_ops = { + .alloc = __mic_dma_alloc, + .free = __mic_dma_free, + .map_page = __mic_dma_map_page, + .unmap_page = __mic_dma_unmap_page, + .map_sg = __mic_dma_map_sg, + .unmap_sg = __mic_dma_unmap_sg, +}; + +static struct mic_irq * +___mic_request_irq(struct scif_hw_dev *scdev, + irqreturn_t (*func)(int irq, void *data), + const char *name, + void *data, int db) +{ + struct mic_device *mdev = scdev_to_mdev(scdev); + + return mic_request_threaded_irq(mdev, func, NULL, name, data, + db, MIC_INTR_DB); +} + +static void +___mic_free_irq(struct scif_hw_dev *scdev, + struct mic_irq *cookie, void *data) +{ + struct mic_device *mdev = scdev_to_mdev(scdev); + + return mic_free_irq(mdev, cookie, data); +} + +static void ___mic_ack_interrupt(struct scif_hw_dev *scdev, int num) +{ + struct mic_device *mdev = scdev_to_mdev(scdev); + + mdev->ops->intr_workarounds(mdev); +} + +static int ___mic_next_db(struct scif_hw_dev *scdev) +{ + struct mic_device *mdev = scdev_to_mdev(scdev); + + return mic_next_db(mdev); +} + +static void ___mic_send_intr(struct scif_hw_dev *scdev, int db) +{ + struct mic_device *mdev = scdev_to_mdev(scdev); + + mdev->ops->send_intr(mdev, db); +} + +static void __iomem *___mic_ioremap(struct scif_hw_dev *scdev, + phys_addr_t pa, size_t len) +{ + struct mic_device *mdev = scdev_to_mdev(scdev); + + return mdev->aper.va + pa; +} + +static void ___mic_iounmap(struct scif_hw_dev *scdev, void __iomem *va) +{ + /* nothing to do */ +} + +static struct scif_hw_ops scif_hw_ops = { + .request_irq = ___mic_request_irq, + .free_irq = ___mic_free_irq, + .ack_interrupt = ___mic_ack_interrupt, + .next_db = ___mic_next_db, + .send_intr = ___mic_send_intr, + .ioremap = ___mic_ioremap, + .iounmap = ___mic_iounmap, +}; + static inline struct mic_device *mbdev_to_mdev(struct mbus_device *mbdev) { return dev_get_drvdata(mbdev->dev.parent); @@ -87,295 +270,213 @@ static struct mbus_hw_ops mbus_hw_ops = { .ack_interrupt = _mic_ack_interrupt, }; -/** - * mic_reset - Reset the MIC device. - * @mdev: pointer to mic_device instance - */ -static void mic_reset(struct mic_device *mdev) +/* Initialize the MIC bootparams */ +void mic_bootparam_init(struct mic_device *mdev) { - int i; + struct mic_bootparam *bootparam = mdev->dp; + + bootparam->magic = cpu_to_le32(MIC_MAGIC); + bootparam->h2c_config_db = -1; + bootparam->node_id = mdev->id + 1; + bootparam->scif_host_dma_addr = 0x0; + bootparam->scif_card_dma_addr = 0x0; + bootparam->c2h_scif_db = -1; + bootparam->h2c_scif_db = -1; +} + +static inline struct mic_device *cosmdev_to_mdev(struct cosm_device *cdev) +{ + return dev_get_drvdata(cdev->dev.parent); +} -#define MIC_RESET_TO (45) +static void _mic_reset(struct cosm_device *cdev) +{ + struct mic_device *mdev = cosmdev_to_mdev(cdev); - reinit_completion(&mdev->reset_wait); mdev->ops->reset_fw_ready(mdev); mdev->ops->reset(mdev); - - for (i = 0; i < MIC_RESET_TO; i++) { - if (mdev->ops->is_fw_ready(mdev)) - goto done; - /* - * Resets typically take 10s of seconds to complete. - * Since an MMIO read is required to check if the - * firmware is ready or not, a 1 second delay works nicely. - */ - msleep(1000); - } - mic_set_state(mdev, MIC_RESET_FAILED); -done: - complete_all(&mdev->reset_wait); } -/* Initialize the MIC bootparams */ -void mic_bootparam_init(struct mic_device *mdev) +static bool _mic_ready(struct cosm_device *cdev) { - struct mic_bootparam *bootparam = mdev->dp; + struct mic_device *mdev = cosmdev_to_mdev(cdev); - bootparam->magic = cpu_to_le32(MIC_MAGIC); - bootparam->c2h_shutdown_db = mdev->shutdown_db; - bootparam->h2c_shutdown_db = -1; - bootparam->h2c_config_db = -1; - bootparam->shutdown_status = 0; - bootparam->shutdown_card = 0; + return mdev->ops->is_fw_ready(mdev); +} + +/** + * mic_request_dma_chans - Request DMA channels + * @mdev: pointer to mic_device instance + * + * returns number of DMA channels acquired + */ +static int mic_request_dma_chans(struct mic_device *mdev) +{ + dma_cap_mask_t mask; + struct dma_chan *chan; + + request_module("mic_x100_dma"); + dma_cap_zero(mask); + dma_cap_set(DMA_MEMCPY, mask); + + do { + chan = dma_request_channel(mask, mdev->ops->dma_filter, + &mdev->pdev->dev); + if (chan) { + mdev->dma_ch[mdev->num_dma_ch++] = chan; + if (mdev->num_dma_ch >= MIC_MAX_DMA_CHAN) + break; + } + } while (chan); + dev_info(&mdev->pdev->dev, "DMA channels # %d\n", mdev->num_dma_ch); + return mdev->num_dma_ch; } /** - * mic_start - Start the MIC. + * mic_free_dma_chans - release DMA channels * @mdev: pointer to mic_device instance - * @buf: buffer containing boot string including firmware/ramdisk path. + * + * returns none + */ +static void mic_free_dma_chans(struct mic_device *mdev) +{ + int i = 0; + + for (i = 0; i < mdev->num_dma_ch; i++) { + dma_release_channel(mdev->dma_ch[i]); + mdev->dma_ch[i] = NULL; + } + mdev->num_dma_ch = 0; +} + +/** + * _mic_start - Start the MIC. + * @cdev: pointer to cosm_device instance + * @id: MIC device id/index provided by COSM used in other drivers like SCIF * * This function prepares an MIC for boot and initiates boot. * RETURNS: An appropriate -ERRNO error value on error, or zero for success. + * + * For all cosm_hw_ops the caller holds a mutex to ensure serialization. */ -int mic_start(struct mic_device *mdev, const char *buf) +static int _mic_start(struct cosm_device *cdev, int id) { + struct mic_device *mdev = cosmdev_to_mdev(cdev); int rc; - mutex_lock(&mdev->mic_mutex); -retry: - if (MIC_OFFLINE != mdev->state) { - rc = -EINVAL; - goto unlock_ret; - } - if (!mdev->ops->is_fw_ready(mdev)) { - mic_reset(mdev); - /* - * The state will either be MIC_OFFLINE if the reset succeeded - * or MIC_RESET_FAILED if the firmware reset failed. - */ - goto retry; - } - mdev->dma_mbdev = mbus_register_device(mdev->sdev->parent, + + mic_bootparam_init(mdev); + mdev->dma_mbdev = mbus_register_device(&mdev->pdev->dev, MBUS_DEV_DMA_HOST, &mic_dma_ops, - &mbus_hw_ops, mdev->mmio.va); + &mbus_hw_ops, id, mdev->mmio.va); if (IS_ERR(mdev->dma_mbdev)) { rc = PTR_ERR(mdev->dma_mbdev); goto unlock_ret; } - mdev->dma_ch = mic_request_dma_chan(mdev); - if (!mdev->dma_ch) { - rc = -ENXIO; + if (!mic_request_dma_chans(mdev)) { + rc = -ENODEV; goto dma_remove; } - rc = mdev->ops->load_mic_fw(mdev, buf); + mdev->scdev = scif_register_device(&mdev->pdev->dev, MIC_SCIF_DEV, + &__mic_dma_ops, &scif_hw_ops, + id + 1, 0, &mdev->mmio, + &mdev->aper, mdev->dp, NULL, + mdev->dma_ch, mdev->num_dma_ch, + true); + if (IS_ERR(mdev->scdev)) { + rc = PTR_ERR(mdev->scdev); + goto dma_free; + } + + rc = mdev->ops->load_mic_fw(mdev, NULL); if (rc) - goto dma_release; + goto scif_remove; mic_smpt_restore(mdev); mic_intr_restore(mdev); mdev->intr_ops->enable_interrupts(mdev); mdev->ops->write_spad(mdev, MIC_DPLO_SPAD, mdev->dp_dma_addr); mdev->ops->write_spad(mdev, MIC_DPHI_SPAD, mdev->dp_dma_addr >> 32); mdev->ops->send_firmware_intr(mdev); - mic_set_state(mdev, MIC_ONLINE); goto unlock_ret; -dma_release: - dma_release_channel(mdev->dma_ch); +scif_remove: + scif_unregister_device(mdev->scdev); +dma_free: + mic_free_dma_chans(mdev); dma_remove: mbus_unregister_device(mdev->dma_mbdev); unlock_ret: - mutex_unlock(&mdev->mic_mutex); return rc; } /** - * mic_stop - Prepare the MIC for reset and trigger reset. - * @mdev: pointer to mic_device instance + * _mic_stop - Prepare the MIC for reset and trigger reset. + * @cdev: pointer to cosm_device instance * @force: force a MIC to reset even if it is already offline. * * RETURNS: None. */ -void mic_stop(struct mic_device *mdev, bool force) +static void _mic_stop(struct cosm_device *cdev, bool force) { - mutex_lock(&mdev->mic_mutex); - if (MIC_OFFLINE != mdev->state || force) { - mic_virtio_reset_devices(mdev); - if (mdev->dma_ch) { - dma_release_channel(mdev->dma_ch); - mdev->dma_ch = NULL; - } - mbus_unregister_device(mdev->dma_mbdev); - mic_bootparam_init(mdev); - mic_reset(mdev); - if (MIC_RESET_FAILED == mdev->state) - goto unlock; - mic_set_shutdown_status(mdev, MIC_NOP); - if (MIC_SUSPENDED != mdev->state) - mic_set_state(mdev, MIC_OFFLINE); - } -unlock: - mutex_unlock(&mdev->mic_mutex); -} - -/** - * mic_shutdown - Initiate MIC shutdown. - * @mdev: pointer to mic_device instance - * - * RETURNS: None. - */ -void mic_shutdown(struct mic_device *mdev) -{ - struct mic_bootparam *bootparam = mdev->dp; - s8 db = bootparam->h2c_shutdown_db; - - mutex_lock(&mdev->mic_mutex); - if (MIC_ONLINE == mdev->state && db != -1) { - bootparam->shutdown_card = 1; - mdev->ops->send_intr(mdev, db); - mic_set_state(mdev, MIC_SHUTTING_DOWN); - } - mutex_unlock(&mdev->mic_mutex); -} - -/** - * mic_shutdown_work - Handle shutdown interrupt from MIC. - * @work: The work structure. - * - * This work is scheduled whenever the host has received a shutdown - * interrupt from the MIC. - */ -void mic_shutdown_work(struct work_struct *work) -{ - struct mic_device *mdev = container_of(work, struct mic_device, - shutdown_work); - struct mic_bootparam *bootparam = mdev->dp; - - mutex_lock(&mdev->mic_mutex); - mic_set_shutdown_status(mdev, bootparam->shutdown_status); - bootparam->shutdown_status = 0; + struct mic_device *mdev = cosmdev_to_mdev(cdev); /* - * if state is MIC_SUSPENDED, OSPM suspend is in progress. We do not - * change the state here so as to prevent users from booting the card - * during and after the suspend operation. + * Since SCIF handles card shutdown and reset (using COSM), it will + * will be the first to be registered and the last to be + * unregistered. */ - if (MIC_SHUTTING_DOWN != mdev->state && - MIC_SUSPENDED != mdev->state) - mic_set_state(mdev, MIC_SHUTTING_DOWN); - mutex_unlock(&mdev->mic_mutex); + mic_virtio_reset_devices(mdev); + scif_unregister_device(mdev->scdev); + mic_free_dma_chans(mdev); + mbus_unregister_device(mdev->dma_mbdev); + mic_bootparam_init(mdev); } -/** - * mic_reset_trigger_work - Trigger MIC reset. - * @work: The work structure. - * - * This work is scheduled whenever the host wants to reset the MIC. - */ -void mic_reset_trigger_work(struct work_struct *work) +static ssize_t _mic_family(struct cosm_device *cdev, char *buf) { - struct mic_device *mdev = container_of(work, struct mic_device, - reset_trigger_work); + struct mic_device *mdev = cosmdev_to_mdev(cdev); + static const char *family[MIC_FAMILY_LAST] = { "x100", "Unknown" }; - mic_stop(mdev, false); + return scnprintf(buf, PAGE_SIZE, "%s\n", family[mdev->family]); } -/** - * mic_complete_resume - Complete MIC Resume after an OSPM suspend/hibernate - * event. - * @mdev: pointer to mic_device instance - * - * RETURNS: None. - */ -void mic_complete_resume(struct mic_device *mdev) +static ssize_t _mic_stepping(struct cosm_device *cdev, char *buf) { - if (mdev->state != MIC_SUSPENDED) { - dev_warn(mdev->sdev->parent, "state %d should be %d\n", - mdev->state, MIC_SUSPENDED); - return; - } - - /* Make sure firmware is ready */ - if (!mdev->ops->is_fw_ready(mdev)) - mic_stop(mdev, true); - - mutex_lock(&mdev->mic_mutex); - mic_set_state(mdev, MIC_OFFLINE); - mutex_unlock(&mdev->mic_mutex); -} + struct mic_device *mdev = cosmdev_to_mdev(cdev); + const char *string = "??"; -/** - * mic_prepare_suspend - Handle suspend notification for the MIC device. - * @mdev: pointer to mic_device instance - * - * RETURNS: None. - */ -void mic_prepare_suspend(struct mic_device *mdev) -{ - unsigned long timeout; - -#define MIC_SUSPEND_TIMEOUT (60 * HZ) - - mutex_lock(&mdev->mic_mutex); - switch (mdev->state) { - case MIC_OFFLINE: - /* - * Card is already offline. Set state to MIC_SUSPENDED - * to prevent users from booting the card. - */ - mic_set_state(mdev, MIC_SUSPENDED); - mutex_unlock(&mdev->mic_mutex); + switch (mdev->stepping) { + case MIC_A0_STEP: + string = "A0"; break; - case MIC_ONLINE: - /* - * Card is online. Set state to MIC_SUSPENDING and notify - * MIC user space daemon which will issue card - * shutdown and reset. - */ - mic_set_state(mdev, MIC_SUSPENDING); - mutex_unlock(&mdev->mic_mutex); - timeout = wait_for_completion_timeout(&mdev->reset_wait, - MIC_SUSPEND_TIMEOUT); - /* Force reset the card if the shutdown completion timed out */ - if (!timeout) { - mutex_lock(&mdev->mic_mutex); - mic_set_state(mdev, MIC_SUSPENDED); - mutex_unlock(&mdev->mic_mutex); - mic_stop(mdev, true); - } + case MIC_B0_STEP: + string = "B0"; break; - case MIC_SHUTTING_DOWN: - /* - * Card is shutting down. Set state to MIC_SUSPENDED - * to prevent further boot of the card. - */ - mic_set_state(mdev, MIC_SUSPENDED); - mutex_unlock(&mdev->mic_mutex); - timeout = wait_for_completion_timeout(&mdev->reset_wait, - MIC_SUSPEND_TIMEOUT); - /* Force reset the card if the shutdown completion timed out */ - if (!timeout) - mic_stop(mdev, true); + case MIC_B1_STEP: + string = "B1"; + break; + case MIC_C0_STEP: + string = "C0"; break; default: - mutex_unlock(&mdev->mic_mutex); break; } + return scnprintf(buf, PAGE_SIZE, "%s\n", string); } -/** - * mic_suspend - Initiate MIC suspend. Suspend merely issues card shutdown. - * @mdev: pointer to mic_device instance - * - * RETURNS: None. - */ -void mic_suspend(struct mic_device *mdev) +static struct mic_mw *_mic_aper(struct cosm_device *cdev) { - struct mic_bootparam *bootparam = mdev->dp; - s8 db = bootparam->h2c_shutdown_db; + struct mic_device *mdev = cosmdev_to_mdev(cdev); - mutex_lock(&mdev->mic_mutex); - if (MIC_SUSPENDING == mdev->state && db != -1) { - bootparam->shutdown_card = 1; - mdev->ops->send_intr(mdev, db); - mic_set_state(mdev, MIC_SUSPENDED); - } - mutex_unlock(&mdev->mic_mutex); + return &mdev->aper; } + +struct cosm_hw_ops cosm_hw_ops = { + .reset = _mic_reset, + .force_reset = _mic_reset, + .post_reset = NULL, + .ready = _mic_ready, + .start = _mic_start, + .stop = _mic_stop, + .family = _mic_family, + .stepping = _mic_stepping, + .aper = _mic_aper, +}; diff --git a/kernel/drivers/misc/mic/host/mic_debugfs.c b/kernel/drivers/misc/mic/host/mic_debugfs.c index 687e9aacf..105816007 100644 --- a/kernel/drivers/misc/mic/host/mic_debugfs.c +++ b/kernel/drivers/misc/mic/host/mic_debugfs.c @@ -31,71 +31,6 @@ /* Debugfs parent dir */ static struct dentry *mic_dbg; -/** - * mic_log_buf_show - Display MIC kernel log buffer. - * - * log_buf addr/len is read from System.map by user space - * and populated in sysfs entries. - */ -static int mic_log_buf_show(struct seq_file *s, void *unused) -{ - void __iomem *log_buf_va; - int __iomem *log_buf_len_va; - struct mic_device *mdev = s->private; - void *kva; - int size; - unsigned long aper_offset; - - if (!mdev || !mdev->log_buf_addr || !mdev->log_buf_len) - goto done; - /* - * Card kernel will never be relocated and any kernel text/data mapping - * can be translated to phys address by subtracting __START_KERNEL_map. - */ - aper_offset = (unsigned long)mdev->log_buf_len - __START_KERNEL_map; - log_buf_len_va = mdev->aper.va + aper_offset; - aper_offset = (unsigned long)mdev->log_buf_addr - __START_KERNEL_map; - log_buf_va = mdev->aper.va + aper_offset; - size = ioread32(log_buf_len_va); - - kva = kmalloc(size, GFP_KERNEL); - if (!kva) - goto done; - mutex_lock(&mdev->mic_mutex); - memcpy_fromio(kva, log_buf_va, size); - switch (mdev->state) { - case MIC_ONLINE: - /* Fall through */ - case MIC_SHUTTING_DOWN: - seq_write(s, kva, size); - break; - default: - break; - } - mutex_unlock(&mdev->mic_mutex); - kfree(kva); -done: - return 0; -} - -static int mic_log_buf_open(struct inode *inode, struct file *file) -{ - return single_open(file, mic_log_buf_show, inode->i_private); -} - -static int mic_log_buf_release(struct inode *inode, struct file *file) -{ - return single_release(inode, file); -} - -static const struct file_operations log_buf_ops = { - .owner = THIS_MODULE, - .open = mic_log_buf_open, - .read = seq_read, - .llseek = seq_lseek, - .release = mic_log_buf_release -}; - static int mic_smpt_show(struct seq_file *s, void *pos) { int i; @@ -138,32 +73,6 @@ static const struct file_operations smpt_file_ops = { .release = mic_smpt_debug_release }; -static int mic_soft_reset_show(struct seq_file *s, void *pos) -{ - struct mic_device *mdev = s->private; - - mic_stop(mdev, true); - return 0; -} - -static int mic_soft_reset_debug_open(struct inode *inode, struct file *file) -{ - return single_open(file, mic_soft_reset_show, inode->i_private); -} - -static int mic_soft_reset_debug_release(struct inode *inode, struct file *file) -{ - return single_release(inode, file); -} - -static const struct file_operations soft_reset_ops = { - .owner = THIS_MODULE, - .open = mic_soft_reset_debug_open, - .read = seq_read, - .llseek = seq_lseek, - .release = mic_soft_reset_debug_release -}; - static int mic_post_code_show(struct seq_file *s, void *pos) { struct mic_device *mdev = s->private; @@ -204,16 +113,19 @@ static int mic_dp_show(struct seq_file *s, void *pos) seq_printf(s, "Bootparam: magic 0x%x\n", bootparam->magic); - seq_printf(s, "Bootparam: h2c_shutdown_db %d\n", - bootparam->h2c_shutdown_db); seq_printf(s, "Bootparam: h2c_config_db %d\n", bootparam->h2c_config_db); - seq_printf(s, "Bootparam: c2h_shutdown_db %d\n", - bootparam->c2h_shutdown_db); - seq_printf(s, "Bootparam: shutdown_status %d\n", - bootparam->shutdown_status); - seq_printf(s, "Bootparam: shutdown_card %d\n", - bootparam->shutdown_card); + seq_printf(s, "Bootparam: node_id %d\n", + bootparam->node_id); + seq_printf(s, "Bootparam: c2h_scif_db %d\n", + bootparam->c2h_scif_db); + seq_printf(s, "Bootparam: h2c_scif_db %d\n", + bootparam->h2c_scif_db); + seq_printf(s, "Bootparam: scif_host_dma_addr 0x%llx\n", + bootparam->scif_host_dma_addr); + seq_printf(s, "Bootparam: scif_card_dma_addr 0x%llx\n", + bootparam->scif_card_dma_addr); + for (i = sizeof(*bootparam); i < MIC_DP_SIZE; i += mic_total_desc_size(d)) { @@ -379,8 +291,7 @@ static int mic_msi_irq_info_show(struct seq_file *s, void *pos) int i, j; u16 entry; u16 vector; - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; if (pci_dev_msi_enabled(pdev)) { for (i = 0; i < mdev->irq_info.num_vectors; i++) { @@ -441,20 +352,18 @@ static const struct file_operations msi_irq_info_ops = { */ void mic_create_debug_dir(struct mic_device *mdev) { + char name[16]; + if (!mic_dbg) return; - mdev->dbg_dir = debugfs_create_dir(dev_name(mdev->sdev), mic_dbg); + scnprintf(name, sizeof(name), "mic%d", mdev->id); + mdev->dbg_dir = debugfs_create_dir(name, mic_dbg); if (!mdev->dbg_dir) return; - debugfs_create_file("log_buf", 0444, mdev->dbg_dir, mdev, &log_buf_ops); - debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev, &smpt_file_ops); - debugfs_create_file("soft_reset", 0444, mdev->dbg_dir, mdev, - &soft_reset_ops); - debugfs_create_file("post_code", 0444, mdev->dbg_dir, mdev, &post_code_ops); diff --git a/kernel/drivers/misc/mic/host/mic_device.h b/kernel/drivers/misc/mic/host/mic_device.h index 016bd15a7..461184a12 100644 --- a/kernel/drivers/misc/mic/host/mic_device.h +++ b/kernel/drivers/misc/mic/host/mic_device.h @@ -26,21 +26,12 @@ #include <linux/notifier.h> #include <linux/irqreturn.h> #include <linux/dmaengine.h> +#include <linux/miscdevice.h> #include <linux/mic_bus.h> - +#include "../bus/scif_bus.h" +#include "../bus/cosm_bus.h" #include "mic_intr.h" -/* The maximum number of MIC devices supported in a single host system. */ -#define MIC_MAX_NUM_DEVS 256 - -/** - * enum mic_hw_family - The hardware family to which a device belongs. - */ -enum mic_hw_family { - MIC_FAMILY_X100 = 0, - MIC_FAMILY_UNKNOWN -}; - /** * enum mic_stepping - MIC stepping ids. */ @@ -51,6 +42,8 @@ enum mic_stepping { MIC_C0_STEP = 0x20, }; +extern struct cosm_hw_ops cosm_hw_ops; + /** * struct mic_device - MIC device information for each card. * @@ -60,8 +53,7 @@ enum mic_stepping { * @ops: MIC HW specific operations. * @id: The unique device id for this MIC device. * @stepping: Stepping ID. - * @attr_group: Pointer to list of sysfs attribute groups. - * @sdev: Device for sysfs entries. + * @pdev: Underlying PCI device. * @mic_mutex: Mutex for synchronizing access to mic_device. * @intr_ops: HW specific interrupt operations. * @smpt_ops: Hardware specific SMPT operations. @@ -69,28 +61,17 @@ enum mic_stepping { * @intr_info: H/W specific interrupt information. * @irq_info: The OS specific irq information * @dbg_dir: debugfs directory of this MIC device. - * @cmdline: Kernel command line. - * @firmware: Firmware file name. - * @ramdisk: Ramdisk file name. - * @bootmode: Boot mode i.e. "linux" or "elf" for flash updates. * @bootaddr: MIC boot address. - * @reset_trigger_work: Work for triggering reset requests. - * @shutdown_work: Work for handling shutdown interrupts. - * @state: MIC state. - * @shutdown_status: MIC status reported by card for shutdown/crashes. - * @state_sysfs: Sysfs dirent for notifying ring 3 about MIC state changes. - * @reset_wait: Waitqueue for sleeping while reset completes. - * @log_buf_addr: Log buffer address for MIC. - * @log_buf_len: Log buffer length address for MIC. * @dp: virtio device page * @dp_dma_addr: virtio device page DMA address. - * @shutdown_db: shutdown doorbell. - * @shutdown_cookie: shutdown cookie. - * @cdev: Character device for MIC. + * @name: name for the misc char device + * @miscdev: registered misc char device * @vdev_list: list of virtio devices. - * @pm_notifier: Handles PM notifications from the OS. * @dma_mbdev: MIC BUS DMA device. - * @dma_ch: DMA channel reserved by this driver for use by virtio devices. + * @dma_ch - Array of DMA channels + * @num_dma_ch - Number of DMA channels available + * @scdev: SCIF device on the SCIF virtual bus. + * @cosm_dev: COSM device */ struct mic_device { struct mic_mw mmio; @@ -99,8 +80,7 @@ struct mic_device { struct mic_hw_ops *ops; int id; enum mic_stepping stepping; - const struct attribute_group **attr_group; - struct device *sdev; + struct pci_dev *pdev; struct mutex mic_mutex; struct mic_hw_intr_ops *intr_ops; struct mic_smpt_ops *smpt_ops; @@ -108,28 +88,17 @@ struct mic_device { struct mic_intr_info *intr_info; struct mic_irq_info irq_info; struct dentry *dbg_dir; - char *cmdline; - char *firmware; - char *ramdisk; - char *bootmode; u32 bootaddr; - struct work_struct reset_trigger_work; - struct work_struct shutdown_work; - u8 state; - u8 shutdown_status; - struct kernfs_node *state_sysfs; - struct completion reset_wait; - void *log_buf_addr; - int *log_buf_len; void *dp; dma_addr_t dp_dma_addr; - int shutdown_db; - struct mic_irq *shutdown_cookie; - struct cdev cdev; + char name[16]; + struct miscdevice miscdev; struct list_head vdev_list; - struct notifier_block pm_notifier; struct mbus_device *dma_mbdev; - struct dma_chan *dma_ch; + struct dma_chan *dma_ch[MIC_MAX_DMA_CHAN]; + int num_dma_ch; + struct scif_hw_dev *scdev; + struct cosm_device *cosm_dev; }; /** @@ -195,37 +164,9 @@ mic_mmio_write(struct mic_mw *mw, u32 val, u32 offset) iowrite32(val, mw->va + offset); } -static inline struct dma_chan *mic_request_dma_chan(struct mic_device *mdev) -{ - dma_cap_mask_t mask; - struct dma_chan *chan; - - dma_cap_zero(mask); - dma_cap_set(DMA_MEMCPY, mask); - chan = dma_request_channel(mask, mdev->ops->dma_filter, - mdev->sdev->parent); - if (chan) - return chan; - dev_err(mdev->sdev->parent, "%s %d unable to acquire channel\n", - __func__, __LINE__); - return NULL; -} - -void mic_sysfs_init(struct mic_device *mdev); -int mic_start(struct mic_device *mdev, const char *buf); -void mic_stop(struct mic_device *mdev, bool force); -void mic_shutdown(struct mic_device *mdev); -void mic_reset_delayed_work(struct work_struct *work); -void mic_reset_trigger_work(struct work_struct *work); -void mic_shutdown_work(struct work_struct *work); void mic_bootparam_init(struct mic_device *mdev); -void mic_set_state(struct mic_device *mdev, u8 state); -void mic_set_shutdown_status(struct mic_device *mdev, u8 status); void mic_create_debug_dir(struct mic_device *dev); void mic_delete_debug_dir(struct mic_device *dev); void __init mic_init_debugfs(void); void mic_exit_debugfs(void); -void mic_prepare_suspend(struct mic_device *mdev); -void mic_complete_resume(struct mic_device *mdev); -void mic_suspend(struct mic_device *mdev); #endif diff --git a/kernel/drivers/misc/mic/host/mic_fops.c b/kernel/drivers/misc/mic/host/mic_fops.c index 85776d732..8cc1d90cd 100644 --- a/kernel/drivers/misc/mic/host/mic_fops.c +++ b/kernel/drivers/misc/mic/host/mic_fops.c @@ -30,8 +30,8 @@ int mic_open(struct inode *inode, struct file *f) { struct mic_vdev *mvdev; - struct mic_device *mdev = container_of(inode->i_cdev, - struct mic_device, cdev); + struct mic_device *mdev = container_of(f->private_data, + struct mic_device, miscdev); mvdev = kzalloc(sizeof(*mvdev), GFP_KERNEL); if (!mvdev) diff --git a/kernel/drivers/misc/mic/host/mic_intr.c b/kernel/drivers/misc/mic/host/mic_intr.c index b4ca6c884..08ca3e372 100644 --- a/kernel/drivers/misc/mic/host/mic_intr.c +++ b/kernel/drivers/misc/mic/host/mic_intr.c @@ -30,8 +30,7 @@ static irqreturn_t mic_thread_fn(int irq, void *dev) struct mic_intr_info *intr_info = mdev->intr_info; struct mic_irq_info *irq_info = &mdev->irq_info; struct mic_intr_cb *intr_cb; - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; int i; spin_lock(&irq_info->mic_thread_lock); @@ -57,8 +56,7 @@ static irqreturn_t mic_interrupt(int irq, void *dev) struct mic_intr_info *intr_info = mdev->intr_info; struct mic_irq_info *irq_info = &mdev->irq_info; struct mic_intr_cb *intr_cb; - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; u32 mask; int i; @@ -83,7 +81,7 @@ static irqreturn_t mic_interrupt(int irq, void *dev) /* Return the interrupt offset from the index. Index is 0 based. */ static u16 mic_map_src_to_offset(struct mic_device *mdev, - int intr_src, enum mic_intr_type type) + int intr_src, enum mic_intr_type type) { if (type >= MIC_NUM_INTR_TYPES) return MIC_NUM_OFFSETS; @@ -214,7 +212,7 @@ static int mic_setup_msix(struct mic_device *mdev, struct pci_dev *pdev) mdev->irq_info.msix_entries[i].entry = i; rc = pci_enable_msix_exact(pdev, mdev->irq_info.msix_entries, - MIC_MIN_MSIX); + MIC_MIN_MSIX); if (rc) { dev_dbg(&pdev->dev, "Error enabling MSIx. rc = %d\n", rc); goto err_enable_msix; @@ -229,7 +227,7 @@ static int mic_setup_msix(struct mic_device *mdev, struct pci_dev *pdev) goto err_nomem2; } - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "%d MSIx irqs setup\n", mdev->irq_info.num_vectors); return 0; err_nomem2: @@ -281,7 +279,6 @@ static void mic_release_callbacks(struct mic_device *mdev) spin_lock(&mdev->irq_info.mic_thread_lock); spin_lock_irqsave(&mdev->irq_info.mic_intr_lock, flags); for (i = 0; i < MIC_NUM_OFFSETS; i++) { - if (list_empty(&mdev->irq_info.cb_list[i])) break; @@ -443,12 +440,11 @@ mic_request_threaded_irq(struct mic_device *mdev, unsigned long cookie = 0; u16 entry; struct mic_intr_cb *intr_cb; - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; offset = mic_map_src_to_offset(mdev, intr_src, type); if (offset >= MIC_NUM_OFFSETS) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "Error mapping index %d to a valid source id.\n", intr_src); rc = -EINVAL; @@ -458,7 +454,7 @@ mic_request_threaded_irq(struct mic_device *mdev, if (mdev->irq_info.num_vectors > 1) { msix = mic_get_available_vector(mdev); if (!msix) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "No MSIx vectors available for use.\n"); rc = -ENOSPC; goto err; @@ -467,7 +463,7 @@ mic_request_threaded_irq(struct mic_device *mdev, rc = request_threaded_irq(msix->vector, handler, thread_fn, 0, name, data); if (rc) { - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "request irq failed rc = %d\n", rc); goto err; } @@ -476,13 +472,13 @@ mic_request_threaded_irq(struct mic_device *mdev, mdev->intr_ops->program_msi_to_src_map(mdev, entry, offset, true); cookie = MK_COOKIE(entry, offset); - dev_dbg(mdev->sdev->parent, "irq: %d assigned for src: %d\n", + dev_dbg(&mdev->pdev->dev, "irq: %d assigned for src: %d\n", msix->vector, intr_src); } else { intr_cb = mic_register_intr_callback(mdev, offset, handler, thread_fn, data); if (IS_ERR(intr_cb)) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "No available callback entries for use\n"); rc = PTR_ERR(intr_cb); goto err; @@ -495,7 +491,7 @@ mic_request_threaded_irq(struct mic_device *mdev, entry, offset, true); } cookie = MK_COOKIE(entry, intr_cb->cb_id); - dev_dbg(mdev->sdev->parent, "callback %d registered for src: %d\n", + dev_dbg(&mdev->pdev->dev, "callback %d registered for src: %d\n", intr_cb->cb_id, intr_src); } return (struct mic_irq *)cookie; @@ -515,20 +511,19 @@ err: * returns: none. */ void mic_free_irq(struct mic_device *mdev, - struct mic_irq *cookie, void *data) + struct mic_irq *cookie, void *data) { u32 offset; u32 entry; u8 src_id; unsigned int irq; - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; entry = GET_ENTRY((unsigned long)cookie); offset = GET_OFFSET((unsigned long)cookie); if (mdev->irq_info.num_vectors > 1) { if (entry >= mdev->irq_info.num_vectors) { - dev_warn(mdev->sdev->parent, + dev_warn(&mdev->pdev->dev, "entry %d should be < num_irq %d\n", entry, mdev->irq_info.num_vectors); return; @@ -539,12 +534,12 @@ void mic_free_irq(struct mic_device *mdev, mdev->intr_ops->program_msi_to_src_map(mdev, entry, offset, false); - dev_dbg(mdev->sdev->parent, "irq: %d freed\n", irq); + dev_dbg(&mdev->pdev->dev, "irq: %d freed\n", irq); } else { irq = pdev->irq; src_id = mic_unregister_intr_callback(mdev, offset); if (src_id >= MIC_NUM_OFFSETS) { - dev_warn(mdev->sdev->parent, "Error unregistering callback\n"); + dev_warn(&mdev->pdev->dev, "Error unregistering callback\n"); return; } if (pci_dev_msi_enabled(pdev)) { @@ -552,7 +547,7 @@ void mic_free_irq(struct mic_device *mdev, mdev->intr_ops->program_msi_to_src_map(mdev, entry, src_id, false); } - dev_dbg(mdev->sdev->parent, "callback %d unregistered for src: %d\n", + dev_dbg(&mdev->pdev->dev, "callback %d unregistered for src: %d\n", offset, src_id); } } @@ -579,7 +574,7 @@ int mic_setup_interrupts(struct mic_device *mdev, struct pci_dev *pdev) rc = mic_setup_intx(mdev, pdev); if (rc) { - dev_err(mdev->sdev->parent, "no usable interrupts\n"); + dev_err(&mdev->pdev->dev, "no usable interrupts\n"); return rc; } done: @@ -635,8 +630,7 @@ void mic_free_interrupts(struct mic_device *mdev, struct pci_dev *pdev) void mic_intr_restore(struct mic_device *mdev) { int entry, offset; - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; if (!pci_dev_msi_enabled(pdev)) return; diff --git a/kernel/drivers/misc/mic/host/mic_intr.h b/kernel/drivers/misc/mic/host/mic_intr.h index 9f783d4ad..cce28824d 100644 --- a/kernel/drivers/misc/mic/host/mic_intr.h +++ b/kernel/drivers/misc/mic/host/mic_intr.h @@ -28,8 +28,9 @@ * 3 for virtio network, console and block devices. * 1 for card shutdown notifications. * 4 for host owned DMA channels. + * 1 for SCIF */ -#define MIC_MIN_MSIX 8 +#define MIC_MIN_MSIX 9 #define MIC_NUM_OFFSETS 32 /** diff --git a/kernel/drivers/misc/mic/host/mic_main.c b/kernel/drivers/misc/mic/host/mic_main.c index ab37a3117..153894e7e 100644 --- a/kernel/drivers/misc/mic/host/mic_main.c +++ b/kernel/drivers/misc/mic/host/mic_main.c @@ -16,17 +16,11 @@ * the file called "COPYING". * * Intel MIC Host driver. - * - * Global TODO's across the driver to be added after initial base - * patches are accepted upstream: - * 1) Enable DMA support. - * 2) Enable per vring interrupt support. */ #include <linux/fs.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/poll.h> -#include <linux/suspend.h> #include <linux/mic_common.h> #include "../common/mic_dev.h" @@ -63,8 +57,6 @@ MODULE_DEVICE_TABLE(pci, mic_pci_tbl); /* ID allocator for MIC devices */ static struct ida g_mic_ida; -/* Class of MIC devices for sysfs accessibility. */ -static struct class *g_mic_class; /* Base device node number for MIC devices */ static dev_t g_mic_devno; @@ -81,17 +73,14 @@ static const struct file_operations mic_fops = { static int mic_dp_init(struct mic_device *mdev) { mdev->dp = kzalloc(MIC_DP_SIZE, GFP_KERNEL); - if (!mdev->dp) { - dev_err(mdev->sdev->parent, "%s %d err %d\n", - __func__, __LINE__, -ENOMEM); + if (!mdev->dp) return -ENOMEM; - } mdev->dp_dma_addr = mic_map_single(mdev, mdev->dp, MIC_DP_SIZE); if (mic_map_error(mdev->dp_dma_addr)) { kfree(mdev->dp); - dev_err(mdev->sdev->parent, "%s %d err %d\n", + dev_err(&mdev->pdev->dev, "%s %d err %d\n", __func__, __LINE__, -ENOMEM); return -ENOMEM; } @@ -108,30 +97,6 @@ static void mic_dp_uninit(struct mic_device *mdev) } /** - * mic_shutdown_db - Shutdown doorbell interrupt handler. - */ -static irqreturn_t mic_shutdown_db(int irq, void *data) -{ - struct mic_device *mdev = data; - struct mic_bootparam *bootparam = mdev->dp; - - mdev->ops->intr_workarounds(mdev); - - switch (bootparam->shutdown_status) { - case MIC_HALTED: - case MIC_POWER_OFF: - case MIC_RESTART: - /* Fall through */ - case MIC_CRASHED: - schedule_work(&mdev->shutdown_work); - break; - default: - break; - }; - return IRQ_HANDLED; -} - -/** * mic_ops_init: Initialize HW specific operation tables. * * @mdev: pointer to mic_device instance @@ -188,43 +153,6 @@ static enum mic_hw_family mic_get_family(struct pci_dev *pdev) } /** -* mic_pm_notifier: Notifier callback function that handles -* PM notifications. -* -* @notifier_block: The notifier structure. -* @pm_event: The event for which the driver was notified. -* @unused: Meaningless. Always NULL. -* -* returns NOTIFY_DONE -*/ -static int mic_pm_notifier(struct notifier_block *notifier, - unsigned long pm_event, void *unused) -{ - struct mic_device *mdev = container_of(notifier, - struct mic_device, pm_notifier); - - switch (pm_event) { - case PM_HIBERNATION_PREPARE: - /* Fall through */ - case PM_SUSPEND_PREPARE: - mic_prepare_suspend(mdev); - break; - case PM_POST_HIBERNATION: - /* Fall through */ - case PM_POST_SUSPEND: - /* Fall through */ - case PM_POST_RESTORE: - mic_complete_resume(mdev); - break; - case PM_RESTORE_PREPARE: - break; - default: - break; - } - return NOTIFY_DONE; -} - -/** * mic_device_init - Allocates and initializes the MIC device structure * * @mdev: pointer to mic_device instance @@ -232,52 +160,16 @@ static int mic_pm_notifier(struct notifier_block *notifier, * * returns none. */ -static int +static void mic_device_init(struct mic_device *mdev, struct pci_dev *pdev) { - int rc; - + mdev->pdev = pdev; mdev->family = mic_get_family(pdev); mdev->stepping = pdev->revision; mic_ops_init(mdev); - mic_sysfs_init(mdev); mutex_init(&mdev->mic_mutex); mdev->irq_info.next_avail_src = 0; - INIT_WORK(&mdev->reset_trigger_work, mic_reset_trigger_work); - INIT_WORK(&mdev->shutdown_work, mic_shutdown_work); - init_completion(&mdev->reset_wait); INIT_LIST_HEAD(&mdev->vdev_list); - mdev->pm_notifier.notifier_call = mic_pm_notifier; - rc = register_pm_notifier(&mdev->pm_notifier); - if (rc) { - dev_err(&pdev->dev, "register_pm_notifier failed rc %d\n", - rc); - goto register_pm_notifier_fail; - } - return 0; -register_pm_notifier_fail: - flush_work(&mdev->shutdown_work); - flush_work(&mdev->reset_trigger_work); - return rc; -} - -/** - * mic_device_uninit - Frees resources allocated during mic_device_init(..) - * - * @mdev: pointer to mic_device instance - * - * returns none - */ -static void mic_device_uninit(struct mic_device *mdev) -{ - /* The cmdline sysfs entry might have allocated cmdline */ - kfree(mdev->cmdline); - kfree(mdev->firmware); - kfree(mdev->ramdisk); - kfree(mdev->bootmode); - flush_work(&mdev->reset_trigger_work); - flush_work(&mdev->shutdown_work); - unregister_pm_notifier(&mdev->pm_notifier); } /** @@ -289,7 +181,7 @@ static void mic_device_uninit(struct mic_device *mdev) * returns 0 on success, < 0 on failure. */ static int mic_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { int rc; struct mic_device *mdev; @@ -307,16 +199,12 @@ static int mic_probe(struct pci_dev *pdev, goto ida_fail; } - rc = mic_device_init(mdev, pdev); - if (rc) { - dev_err(&pdev->dev, "mic_device_init failed rc %d\n", rc); - goto device_init_fail; - } + mic_device_init(mdev, pdev); rc = pci_enable_device(pdev); if (rc) { dev_err(&pdev->dev, "failed to enable pci device.\n"); - goto uninit_device; + goto ida_remove; } pci_set_master(pdev); @@ -365,61 +253,39 @@ static int mic_probe(struct pci_dev *pdev, pci_set_drvdata(pdev, mdev); - mdev->sdev = device_create_with_groups(g_mic_class, &pdev->dev, - MKDEV(MAJOR(g_mic_devno), mdev->id), NULL, - mdev->attr_group, "mic%d", mdev->id); - if (IS_ERR(mdev->sdev)) { - rc = PTR_ERR(mdev->sdev); - dev_err(&pdev->dev, - "device_create_with_groups failed rc %d\n", rc); - goto smpt_uninit; - } - mdev->state_sysfs = sysfs_get_dirent(mdev->sdev->kobj.sd, "state"); - if (!mdev->state_sysfs) { - rc = -ENODEV; - dev_err(&pdev->dev, "sysfs_get_dirent failed rc %d\n", rc); - goto destroy_device; - } - rc = mic_dp_init(mdev); if (rc) { dev_err(&pdev->dev, "mic_dp_init failed rc %d\n", rc); - goto sysfs_put; - } - mutex_lock(&mdev->mic_mutex); - - mdev->shutdown_db = mic_next_db(mdev); - mdev->shutdown_cookie = mic_request_threaded_irq(mdev, mic_shutdown_db, - NULL, "shutdown-interrupt", mdev, - mdev->shutdown_db, MIC_INTR_DB); - if (IS_ERR(mdev->shutdown_cookie)) { - rc = PTR_ERR(mdev->shutdown_cookie); - mutex_unlock(&mdev->mic_mutex); - goto dp_uninit; + goto smpt_uninit; } - mutex_unlock(&mdev->mic_mutex); mic_bootparam_init(mdev); mic_create_debug_dir(mdev); - cdev_init(&mdev->cdev, &mic_fops); - mdev->cdev.owner = THIS_MODULE; - rc = cdev_add(&mdev->cdev, MKDEV(MAJOR(g_mic_devno), mdev->id), 1); + + mdev->miscdev.minor = MISC_DYNAMIC_MINOR; + snprintf(mdev->name, sizeof(mdev->name), "mic%d", mdev->id); + mdev->miscdev.name = mdev->name; + mdev->miscdev.fops = &mic_fops; + mdev->miscdev.parent = &mdev->pdev->dev; + rc = misc_register(&mdev->miscdev); if (rc) { - dev_err(&pdev->dev, "cdev_add err id %d rc %d\n", mdev->id, rc); + dev_err(&pdev->dev, "misc_register err id %d rc %d\n", + mdev->id, rc); goto cleanup_debug_dir; } + + mdev->cosm_dev = cosm_register_device(&mdev->pdev->dev, &cosm_hw_ops); + if (IS_ERR(mdev->cosm_dev)) { + rc = PTR_ERR(mdev->cosm_dev); + dev_err(&pdev->dev, "cosm_add_device failed rc %d\n", rc); + goto misc_dereg; + } return 0; +misc_dereg: + misc_deregister(&mdev->miscdev); cleanup_debug_dir: mic_delete_debug_dir(mdev); - mutex_lock(&mdev->mic_mutex); - mic_free_irq(mdev, mdev->shutdown_cookie, mdev); - mutex_unlock(&mdev->mic_mutex); -dp_uninit: mic_dp_uninit(mdev); -sysfs_put: - sysfs_put(mdev->state_sysfs); -destroy_device: - device_destroy(g_mic_class, MKDEV(MAJOR(g_mic_devno), mdev->id)); smpt_uninit: mic_smpt_uninit(mdev); free_interrupts: @@ -432,9 +298,7 @@ release_regions: pci_release_regions(pdev); disable_device: pci_disable_device(pdev); -uninit_device: - mic_device_uninit(mdev); -device_init_fail: +ida_remove: ida_simple_remove(&g_mic_ida, mdev->id); ida_fail: kfree(mdev); @@ -458,26 +322,20 @@ static void mic_remove(struct pci_dev *pdev) if (!mdev) return; - mic_stop(mdev, false); - cdev_del(&mdev->cdev); + cosm_unregister_device(mdev->cosm_dev); + misc_deregister(&mdev->miscdev); mic_delete_debug_dir(mdev); - mutex_lock(&mdev->mic_mutex); - mic_free_irq(mdev, mdev->shutdown_cookie, mdev); - mutex_unlock(&mdev->mic_mutex); - flush_work(&mdev->shutdown_work); mic_dp_uninit(mdev); - sysfs_put(mdev->state_sysfs); - device_destroy(g_mic_class, MKDEV(MAJOR(g_mic_devno), mdev->id)); mic_smpt_uninit(mdev); mic_free_interrupts(mdev, pdev); - iounmap(mdev->mmio.va); iounmap(mdev->aper.va); - mic_device_uninit(mdev); + iounmap(mdev->mmio.va); pci_release_regions(pdev); pci_disable_device(pdev); ida_simple_remove(&g_mic_ida, mdev->id); kfree(mdev); } + static struct pci_driver mic_driver = { .name = mic_driver_name, .id_table = mic_pci_tbl, @@ -490,31 +348,23 @@ static int __init mic_init(void) int ret; ret = alloc_chrdev_region(&g_mic_devno, 0, - MIC_MAX_NUM_DEVS, mic_driver_name); + MIC_MAX_NUM_DEVS, mic_driver_name); if (ret) { pr_err("alloc_chrdev_region failed ret %d\n", ret); goto error; } - g_mic_class = class_create(THIS_MODULE, mic_driver_name); - if (IS_ERR(g_mic_class)) { - ret = PTR_ERR(g_mic_class); - pr_err("class_create failed ret %d\n", ret); - goto cleanup_chrdev; - } - mic_init_debugfs(); ida_init(&g_mic_ida); ret = pci_register_driver(&mic_driver); if (ret) { pr_err("pci_register_driver failed ret %d\n", ret); - goto cleanup_debugfs; + goto cleanup_chrdev; } return ret; -cleanup_debugfs: - mic_exit_debugfs(); - class_destroy(g_mic_class); cleanup_chrdev: + ida_destroy(&g_mic_ida); + mic_exit_debugfs(); unregister_chrdev_region(g_mic_devno, MIC_MAX_NUM_DEVS); error: return ret; @@ -525,7 +375,6 @@ static void __exit mic_exit(void) pci_unregister_driver(&mic_driver); ida_destroy(&g_mic_ida); mic_exit_debugfs(); - class_destroy(g_mic_class); unregister_chrdev_region(g_mic_devno, MIC_MAX_NUM_DEVS); } diff --git a/kernel/drivers/misc/mic/host/mic_smpt.c b/kernel/drivers/misc/mic/host/mic_smpt.c index fae474c48..c3f958580 100644 --- a/kernel/drivers/misc/mic/host/mic_smpt.c +++ b/kernel/drivers/misc/mic/host/mic_smpt.c @@ -76,7 +76,7 @@ mic_is_system_addr(struct mic_device *mdev, dma_addr_t pa) /* Populate an SMPT entry and update the reference counts. */ static void mic_add_smpt_entry(int spt, s64 *ref, u64 addr, - int entries, struct mic_device *mdev) + int entries, struct mic_device *mdev) { struct mic_smpt_info *smpt_info = mdev->smpt; int i; @@ -97,7 +97,7 @@ static void mic_add_smpt_entry(int spt, s64 *ref, u64 addr, * for a given DMA address and size. */ static dma_addr_t mic_smpt_op(struct mic_device *mdev, u64 dma_addr, - int entries, s64 *ref, size_t size) + int entries, s64 *ref, size_t size) { int spt; int ae = 0; @@ -148,7 +148,7 @@ found: * and the starting smpt address */ static int mic_get_smpt_ref_count(struct mic_device *mdev, dma_addr_t dma_addr, - size_t size, s64 *ref, u64 *smpt_start) + size_t size, s64 *ref, u64 *smpt_start) { u64 start = dma_addr; u64 end = dma_addr + size; @@ -174,15 +174,14 @@ static int mic_get_smpt_ref_count(struct mic_device *mdev, dma_addr_t dma_addr, * * returns a DMA address. */ -static dma_addr_t -mic_to_dma_addr(struct mic_device *mdev, dma_addr_t mic_addr) +dma_addr_t mic_to_dma_addr(struct mic_device *mdev, dma_addr_t mic_addr) { struct mic_smpt_info *smpt_info = mdev->smpt; int spt; dma_addr_t dma_addr; if (!mic_is_system_addr(mdev, mic_addr)) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "mic_addr is invalid. mic_addr = 0x%llx\n", mic_addr); return -EINVAL; } @@ -214,12 +213,12 @@ dma_addr_t mic_map(struct mic_device *mdev, dma_addr_t dma_addr, size_t size) if (!size || size > mic_max_system_memory(mdev)) return mic_addr; - ref = kmalloc(mdev->smpt->info.num_reg * sizeof(s64), GFP_KERNEL); + ref = kmalloc_array(mdev->smpt->info.num_reg, sizeof(s64), GFP_ATOMIC); if (!ref) return mic_addr; num_entries = mic_get_smpt_ref_count(mdev, dma_addr, size, - ref, &smpt_start); + ref, &smpt_start); /* Set the smpt table appropriately and get 16G aligned mic address */ mic_addr = mic_smpt_op(mdev, smpt_start, num_entries, ref, size); @@ -232,7 +231,7 @@ dma_addr_t mic_map(struct mic_device *mdev, dma_addr_t dma_addr, size_t size) * else generate mic_addr by adding the 16G offset in dma_addr */ if (!mic_addr && MIC_FAMILY_X100 == mdev->family) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "mic_map failed dma_addr 0x%llx size 0x%lx\n", dma_addr, size); return mic_addr; @@ -265,13 +264,13 @@ void mic_unmap(struct mic_device *mdev, dma_addr_t mic_addr, size_t size) return; if (!mic_is_system_addr(mdev, mic_addr)) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "invalid address: 0x%llx\n", mic_addr); return; } spt = mic_sys_addr_to_smpt(mdev, mic_addr); - ref = kmalloc(mdev->smpt->info.num_reg * sizeof(s64), GFP_KERNEL); + ref = kmalloc_array(mdev->smpt->info.num_reg, sizeof(s64), GFP_ATOMIC); if (!ref) return; @@ -285,7 +284,7 @@ void mic_unmap(struct mic_device *mdev, dma_addr_t mic_addr, size_t size) for (i = spt; i < spt + num_smpt; i++) { smpt_info->entry[i].ref_count -= ref[i - spt]; if (smpt_info->entry[i].ref_count < 0) - dev_warn(mdev->sdev->parent, + dev_warn(&mdev->pdev->dev, "ref count for entry %d is negative\n", i); } spin_unlock_irqrestore(&smpt_info->smpt_lock, flags); @@ -308,15 +307,14 @@ void mic_unmap(struct mic_device *mdev, dma_addr_t mic_addr, size_t size) dma_addr_t mic_map_single(struct mic_device *mdev, void *va, size_t size) { dma_addr_t mic_addr = 0; - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; dma_addr_t dma_addr = pci_map_single(pdev, va, size, PCI_DMA_BIDIRECTIONAL); if (!pci_dma_mapping_error(pdev, dma_addr)) { mic_addr = mic_map(mdev, dma_addr, size); if (!mic_addr) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "mic_map failed dma_addr 0x%llx size 0x%lx\n", dma_addr, size); pci_unmap_single(pdev, dma_addr, @@ -340,8 +338,7 @@ dma_addr_t mic_map_single(struct mic_device *mdev, void *va, size_t size) void mic_unmap_single(struct mic_device *mdev, dma_addr_t mic_addr, size_t size) { - struct pci_dev *pdev = container_of(mdev->sdev->parent, - struct pci_dev, dev); + struct pci_dev *pdev = mdev->pdev; dma_addr_t dma_addr = mic_to_dma_addr(mdev, mic_addr); mic_unmap(mdev, mic_addr, size); pci_unmap_single(pdev, dma_addr, size, PCI_DMA_BIDIRECTIONAL); @@ -400,18 +397,18 @@ void mic_smpt_uninit(struct mic_device *mdev) struct mic_smpt_info *smpt_info = mdev->smpt; int i; - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "nodeid %d SMPT ref count %lld map %lld unmap %lld\n", mdev->id, smpt_info->ref_count, smpt_info->map_count, smpt_info->unmap_count); for (i = 0; i < smpt_info->info.num_reg; i++) { - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "SMPT entry[%d] dma_addr = 0x%llx ref_count = %lld\n", i, smpt_info->entry[i].dma_addr, smpt_info->entry[i].ref_count); if (smpt_info->entry[i].ref_count) - dev_warn(mdev->sdev->parent, + dev_warn(&mdev->pdev->dev, "ref count for entry %d is not zero\n", i); } kfree(smpt_info->entry); diff --git a/kernel/drivers/misc/mic/host/mic_smpt.h b/kernel/drivers/misc/mic/host/mic_smpt.h index 51970abfe..68721c6e7 100644 --- a/kernel/drivers/misc/mic/host/mic_smpt.h +++ b/kernel/drivers/misc/mic/host/mic_smpt.h @@ -78,6 +78,7 @@ void mic_unmap_single(struct mic_device *mdev, dma_addr_t mic_map(struct mic_device *mdev, dma_addr_t dma_addr, size_t size); void mic_unmap(struct mic_device *mdev, dma_addr_t mic_addr, size_t size); +dma_addr_t mic_to_dma_addr(struct mic_device *mdev, dma_addr_t mic_addr); /** * mic_map_error - Check a MIC address for errors. diff --git a/kernel/drivers/misc/mic/host/mic_sysfs.c b/kernel/drivers/misc/mic/host/mic_sysfs.c deleted file mode 100644 index 6dd864e4a..000000000 --- a/kernel/drivers/misc/mic/host/mic_sysfs.c +++ /dev/null @@ -1,459 +0,0 @@ -/* - * Intel MIC Platform Software Stack (MPSS) - * - * Copyright(c) 2013 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * The full GNU General Public License is included in this distribution in - * the file called "COPYING". - * - * Intel MIC Host driver. - * - */ -#include <linux/pci.h> - -#include <linux/mic_common.h> -#include "../common/mic_dev.h" -#include "mic_device.h" - -/* - * A state-to-string lookup table, for exposing a human readable state - * via sysfs. Always keep in sync with enum mic_states - */ -static const char * const mic_state_string[] = { - [MIC_OFFLINE] = "offline", - [MIC_ONLINE] = "online", - [MIC_SHUTTING_DOWN] = "shutting_down", - [MIC_RESET_FAILED] = "reset_failed", - [MIC_SUSPENDING] = "suspending", - [MIC_SUSPENDED] = "suspended", -}; - -/* - * A shutdown-status-to-string lookup table, for exposing a human - * readable state via sysfs. Always keep in sync with enum mic_shutdown_status - */ -static const char * const mic_shutdown_status_string[] = { - [MIC_NOP] = "nop", - [MIC_CRASHED] = "crashed", - [MIC_HALTED] = "halted", - [MIC_POWER_OFF] = "poweroff", - [MIC_RESTART] = "restart", -}; - -void mic_set_shutdown_status(struct mic_device *mdev, u8 shutdown_status) -{ - dev_dbg(mdev->sdev->parent, "Shutdown Status %s -> %s\n", - mic_shutdown_status_string[mdev->shutdown_status], - mic_shutdown_status_string[shutdown_status]); - mdev->shutdown_status = shutdown_status; -} - -void mic_set_state(struct mic_device *mdev, u8 state) -{ - dev_dbg(mdev->sdev->parent, "State %s -> %s\n", - mic_state_string[mdev->state], - mic_state_string[state]); - mdev->state = state; - sysfs_notify_dirent(mdev->state_sysfs); -} - -static ssize_t -family_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - static const char x100[] = "x100"; - static const char unknown[] = "Unknown"; - const char *card = NULL; - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev) - return -EINVAL; - - switch (mdev->family) { - case MIC_FAMILY_X100: - card = x100; - break; - default: - card = unknown; - break; - } - return scnprintf(buf, PAGE_SIZE, "%s\n", card); -} -static DEVICE_ATTR_RO(family); - -static ssize_t -stepping_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - char *string = "??"; - - if (!mdev) - return -EINVAL; - - switch (mdev->stepping) { - case MIC_A0_STEP: - string = "A0"; - break; - case MIC_B0_STEP: - string = "B0"; - break; - case MIC_B1_STEP: - string = "B1"; - break; - case MIC_C0_STEP: - string = "C0"; - break; - default: - break; - } - return scnprintf(buf, PAGE_SIZE, "%s\n", string); -} -static DEVICE_ATTR_RO(stepping); - -static ssize_t -state_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev || mdev->state >= MIC_LAST) - return -EINVAL; - - return scnprintf(buf, PAGE_SIZE, "%s\n", - mic_state_string[mdev->state]); -} - -static ssize_t -state_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int rc = 0; - struct mic_device *mdev = dev_get_drvdata(dev->parent); - if (!mdev) - return -EINVAL; - if (sysfs_streq(buf, "boot")) { - rc = mic_start(mdev, buf); - if (rc) { - dev_err(mdev->sdev->parent, - "mic_boot failed rc %d\n", rc); - count = rc; - } - goto done; - } - - if (sysfs_streq(buf, "reset")) { - schedule_work(&mdev->reset_trigger_work); - goto done; - } - - if (sysfs_streq(buf, "shutdown")) { - mic_shutdown(mdev); - goto done; - } - - if (sysfs_streq(buf, "suspend")) { - mic_suspend(mdev); - goto done; - } - - count = -EINVAL; -done: - return count; -} -static DEVICE_ATTR_RW(state); - -static ssize_t shutdown_status_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev || mdev->shutdown_status >= MIC_STATUS_LAST) - return -EINVAL; - - return scnprintf(buf, PAGE_SIZE, "%s\n", - mic_shutdown_status_string[mdev->shutdown_status]); -} -static DEVICE_ATTR_RO(shutdown_status); - -static ssize_t -cmdline_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - char *cmdline; - - if (!mdev) - return -EINVAL; - - cmdline = mdev->cmdline; - - if (cmdline) - return scnprintf(buf, PAGE_SIZE, "%s\n", cmdline); - return 0; -} - -static ssize_t -cmdline_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev) - return -EINVAL; - - mutex_lock(&mdev->mic_mutex); - kfree(mdev->cmdline); - - mdev->cmdline = kmalloc(count + 1, GFP_KERNEL); - if (!mdev->cmdline) { - count = -ENOMEM; - goto unlock; - } - - strncpy(mdev->cmdline, buf, count); - - if (mdev->cmdline[count - 1] == '\n') - mdev->cmdline[count - 1] = '\0'; - else - mdev->cmdline[count] = '\0'; -unlock: - mutex_unlock(&mdev->mic_mutex); - return count; -} -static DEVICE_ATTR_RW(cmdline); - -static ssize_t -firmware_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - char *firmware; - - if (!mdev) - return -EINVAL; - - firmware = mdev->firmware; - - if (firmware) - return scnprintf(buf, PAGE_SIZE, "%s\n", firmware); - return 0; -} - -static ssize_t -firmware_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev) - return -EINVAL; - - mutex_lock(&mdev->mic_mutex); - kfree(mdev->firmware); - - mdev->firmware = kmalloc(count + 1, GFP_KERNEL); - if (!mdev->firmware) { - count = -ENOMEM; - goto unlock; - } - strncpy(mdev->firmware, buf, count); - - if (mdev->firmware[count - 1] == '\n') - mdev->firmware[count - 1] = '\0'; - else - mdev->firmware[count] = '\0'; -unlock: - mutex_unlock(&mdev->mic_mutex); - return count; -} -static DEVICE_ATTR_RW(firmware); - -static ssize_t -ramdisk_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - char *ramdisk; - - if (!mdev) - return -EINVAL; - - ramdisk = mdev->ramdisk; - - if (ramdisk) - return scnprintf(buf, PAGE_SIZE, "%s\n", ramdisk); - return 0; -} - -static ssize_t -ramdisk_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev) - return -EINVAL; - - mutex_lock(&mdev->mic_mutex); - kfree(mdev->ramdisk); - - mdev->ramdisk = kmalloc(count + 1, GFP_KERNEL); - if (!mdev->ramdisk) { - count = -ENOMEM; - goto unlock; - } - - strncpy(mdev->ramdisk, buf, count); - - if (mdev->ramdisk[count - 1] == '\n') - mdev->ramdisk[count - 1] = '\0'; - else - mdev->ramdisk[count] = '\0'; -unlock: - mutex_unlock(&mdev->mic_mutex); - return count; -} -static DEVICE_ATTR_RW(ramdisk); - -static ssize_t -bootmode_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - char *bootmode; - - if (!mdev) - return -EINVAL; - - bootmode = mdev->bootmode; - - if (bootmode) - return scnprintf(buf, PAGE_SIZE, "%s\n", bootmode); - return 0; -} - -static ssize_t -bootmode_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev) - return -EINVAL; - - if (!sysfs_streq(buf, "linux") && !sysfs_streq(buf, "elf")) - return -EINVAL; - - mutex_lock(&mdev->mic_mutex); - kfree(mdev->bootmode); - - mdev->bootmode = kmalloc(count + 1, GFP_KERNEL); - if (!mdev->bootmode) { - count = -ENOMEM; - goto unlock; - } - - strncpy(mdev->bootmode, buf, count); - - if (mdev->bootmode[count - 1] == '\n') - mdev->bootmode[count - 1] = '\0'; - else - mdev->bootmode[count] = '\0'; -unlock: - mutex_unlock(&mdev->mic_mutex); - return count; -} -static DEVICE_ATTR_RW(bootmode); - -static ssize_t -log_buf_addr_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev) - return -EINVAL; - - return scnprintf(buf, PAGE_SIZE, "%p\n", mdev->log_buf_addr); -} - -static ssize_t -log_buf_addr_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - int ret; - unsigned long addr; - - if (!mdev) - return -EINVAL; - - ret = kstrtoul(buf, 16, &addr); - if (ret) - goto exit; - - mdev->log_buf_addr = (void *)addr; - ret = count; -exit: - return ret; -} -static DEVICE_ATTR_RW(log_buf_addr); - -static ssize_t -log_buf_len_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - - if (!mdev) - return -EINVAL; - - return scnprintf(buf, PAGE_SIZE, "%p\n", mdev->log_buf_len); -} - -static ssize_t -log_buf_len_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mic_device *mdev = dev_get_drvdata(dev->parent); - int ret; - unsigned long addr; - - if (!mdev) - return -EINVAL; - - ret = kstrtoul(buf, 16, &addr); - if (ret) - goto exit; - - mdev->log_buf_len = (int *)addr; - ret = count; -exit: - return ret; -} -static DEVICE_ATTR_RW(log_buf_len); - -static struct attribute *mic_default_attrs[] = { - &dev_attr_family.attr, - &dev_attr_stepping.attr, - &dev_attr_state.attr, - &dev_attr_shutdown_status.attr, - &dev_attr_cmdline.attr, - &dev_attr_firmware.attr, - &dev_attr_ramdisk.attr, - &dev_attr_bootmode.attr, - &dev_attr_log_buf_addr.attr, - &dev_attr_log_buf_len.attr, - - NULL -}; - -ATTRIBUTE_GROUPS(mic_default); - -void mic_sysfs_init(struct mic_device *mdev) -{ - mdev->attr_group = mic_default_groups; -} diff --git a/kernel/drivers/misc/mic/host/mic_virtio.c b/kernel/drivers/misc/mic/host/mic_virtio.c index a020e4eb4..58b107a24 100644 --- a/kernel/drivers/misc/mic/host/mic_virtio.c +++ b/kernel/drivers/misc/mic/host/mic_virtio.c @@ -23,7 +23,6 @@ #include <linux/uaccess.h> #include <linux/dmaengine.h> #include <linux/mic_common.h> - #include "../common/mic_dev.h" #include "mic_device.h" #include "mic_smpt.h" @@ -40,7 +39,7 @@ static int mic_sync_dma(struct mic_device *mdev, dma_addr_t dst, { int err = 0; struct dma_async_tx_descriptor *tx; - struct dma_chan *mic_ch = mdev->dma_ch; + struct dma_chan *mic_ch = mdev->dma_ch[0]; if (!mic_ch) { err = -EBUSY; @@ -62,7 +61,7 @@ static int mic_sync_dma(struct mic_device *mdev, dma_addr_t dst, } error: if (err) - dev_err(mdev->sdev->parent, "%s %d err %d\n", + dev_err(&mdev->pdev->dev, "%s %d err %d\n", __func__, __LINE__, err); return err; } @@ -80,7 +79,7 @@ static int mic_virtio_copy_to_user(struct mic_vdev *mvdev, void __user *ubuf, struct mic_device *mdev = mvdev->mdev; void __iomem *dbuf = mdev->aper.va + daddr; struct mic_vringh *mvr = &mvdev->mvr[vr_idx]; - size_t dma_alignment = 1 << mdev->dma_ch->device->copy_align; + size_t dma_alignment = 1 << mdev->dma_ch[0]->device->copy_align; size_t dma_offset; size_t partlen; int err; @@ -129,7 +128,7 @@ static int mic_virtio_copy_from_user(struct mic_vdev *mvdev, void __user *ubuf, struct mic_device *mdev = mvdev->mdev; void __iomem *dbuf = mdev->aper.va + daddr; struct mic_vringh *mvr = &mvdev->mvr[vr_idx]; - size_t dma_alignment = 1 << mdev->dma_ch->device->copy_align; + size_t dma_alignment = 1 << mdev->dma_ch[0]->device->copy_align; size_t partlen; int err; @@ -440,7 +439,7 @@ void mic_virtio_reset_devices(struct mic_device *mdev) struct list_head *pos, *tmp; struct mic_vdev *mvdev; - dev_dbg(mdev->sdev->parent, "%s\n", __func__); + dev_dbg(&mdev->pdev->dev, "%s\n", __func__); list_for_each_safe(pos, tmp, &mdev->vdev_list) { mvdev = list_entry(pos, struct mic_vdev, list); @@ -686,7 +685,7 @@ int mic_virtio_add_device(struct mic_vdev *mvdev, mvr->head = USHRT_MAX; mvr->mvdev = mvdev; mvr->vrh.notify = mic_notify; - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "%s %d index %d va %p info %p vr_size 0x%x\n", __func__, __LINE__, i, vr->va, vr->info, vr_size); mvr->buf = (void *)__get_free_pages(GFP_KERNEL, @@ -704,7 +703,7 @@ int mic_virtio_add_device(struct mic_vdev *mvdev, mvdev->virtio_db, MIC_INTR_DB); if (IS_ERR(mvdev->virtio_cookie)) { ret = PTR_ERR(mvdev->virtio_cookie); - dev_dbg(mdev->sdev->parent, "request irq failed\n"); + dev_dbg(&mdev->pdev->dev, "request irq failed\n"); goto err; } @@ -720,7 +719,7 @@ int mic_virtio_add_device(struct mic_vdev *mvdev, smp_wmb(); dd->type = type; - dev_dbg(mdev->sdev->parent, "Added virtio device id %d\n", dd->type); + dev_dbg(&mdev->pdev->dev, "Added virtio device id %d\n", dd->type); db = bootparam->h2c_config_db; if (db != -1) @@ -755,7 +754,7 @@ void mic_virtio_del_device(struct mic_vdev *mvdev) db = bootparam->h2c_config_db; if (db == -1) goto skip_hot_remove; - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "Requesting hot remove id %d\n", mvdev->virtio_id); mvdev->dc->config_change = MIC_VIRTIO_PARAM_DEV_REMOVE; mdev->ops->send_intr(mdev, db); @@ -765,7 +764,7 @@ void mic_virtio_del_device(struct mic_vdev *mvdev) if (ret) break; } - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "Device id %d config_change %d guest_ack %d retry %d\n", mvdev->virtio_id, mvdev->dc->config_change, mvdev->dc->guest_ack, retry); @@ -794,7 +793,7 @@ skip_hot_remove: tmp_mvdev = list_entry(pos, struct mic_vdev, list); if (tmp_mvdev == mvdev) { list_del(pos); - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "Removing virtio device id %d\n", mvdev->virtio_id); break; diff --git a/kernel/drivers/misc/mic/host/mic_virtio.h b/kernel/drivers/misc/mic/host/mic_virtio.h index d574efb85..a80631f27 100644 --- a/kernel/drivers/misc/mic/host/mic_virtio.h +++ b/kernel/drivers/misc/mic/host/mic_virtio.h @@ -124,7 +124,7 @@ void mic_bh_handler(struct work_struct *work); /* Helper API to obtain the MIC PCIe device */ static inline struct device *mic_dev(struct mic_vdev *mvdev) { - return mvdev->mdev->sdev->parent; + return &mvdev->mdev->pdev->dev; } /* Helper API to check if a virtio device is initialized */ diff --git a/kernel/drivers/misc/mic/host/mic_x100.c b/kernel/drivers/misc/mic/host/mic_x100.c index b7a21e11d..8118ac48c 100644 --- a/kernel/drivers/misc/mic/host/mic_x100.c +++ b/kernel/drivers/misc/mic/host/mic_x100.c @@ -43,7 +43,7 @@ static void mic_x100_write_spad(struct mic_device *mdev, unsigned int idx, u32 val) { - dev_dbg(mdev->sdev->parent, "Writing 0x%x to scratch pad index %d\n", + dev_dbg(&mdev->pdev->dev, "Writing 0x%x to scratch pad index %d\n", val, idx); mic_mmio_write(&mdev->mmio, val, MIC_X100_SBOX_BASE_ADDRESS + @@ -66,7 +66,7 @@ mic_x100_read_spad(struct mic_device *mdev, unsigned int idx) MIC_X100_SBOX_BASE_ADDRESS + MIC_X100_SBOX_SPAD0 + idx * 4); - dev_dbg(mdev->sdev->parent, + dev_dbg(&mdev->pdev->dev, "Reading 0x%x from scratch pad index %d\n", val, idx); return val; } @@ -126,7 +126,7 @@ static void mic_x100_disable_interrupts(struct mic_device *mdev) * @mdev: pointer to mic_device instance */ static void mic_x100_send_sbox_intr(struct mic_device *mdev, - int doorbell) + int doorbell) { struct mic_mw *mw = &mdev->mmio; u64 apic_icr_offset = MIC_X100_SBOX_APICICR0 + doorbell * 8; @@ -147,7 +147,7 @@ static void mic_x100_send_sbox_intr(struct mic_device *mdev, * @mdev: pointer to mic_device instance */ static void mic_x100_send_rdmasr_intr(struct mic_device *mdev, - int doorbell) + int doorbell) { int rdmasr_offset = MIC_X100_SBOX_RDMASR0 + (doorbell << 2); /* Ensure that the interrupt is ordered w.r.t. previous stores. */ @@ -167,8 +167,7 @@ static void mic_x100_send_intr(struct mic_device *mdev, int doorbell) if (doorbell < MIC_X100_NUM_SBOX_IRQ) { mic_x100_send_sbox_intr(mdev, doorbell); } else { - rdmasr_db = doorbell - MIC_X100_NUM_SBOX_IRQ + - MIC_X100_RDMASR_IRQ_BASE; + rdmasr_db = doorbell - MIC_X100_NUM_SBOX_IRQ; mic_x100_send_rdmasr_intr(mdev, rdmasr_db); } } @@ -360,15 +359,14 @@ mic_x100_load_command_line(struct mic_device *mdev, const struct firmware *fw) boot_mem = mdev->aper.len >> 20; buf = kzalloc(CMDLINE_SIZE, GFP_KERNEL); - if (!buf) { - dev_err(mdev->sdev->parent, - "%s %d allocation failed\n", __func__, __LINE__); + if (!buf) return -ENOMEM; - } + len += snprintf(buf, CMDLINE_SIZE - len, " mem=%dM", boot_mem); - if (mdev->cmdline) - snprintf(buf + len, CMDLINE_SIZE - len, " %s", mdev->cmdline); + if (mdev->cosm_dev->cmdline) + snprintf(buf + len, CMDLINE_SIZE - len, " %s", + mdev->cosm_dev->cmdline); memcpy_toio(cmd_line_va, buf, strlen(buf) + 1); kfree(buf); return 0; @@ -387,12 +385,11 @@ mic_x100_load_ramdisk(struct mic_device *mdev) int rc; struct boot_params __iomem *bp = mdev->aper.va + mdev->bootaddr; - rc = request_firmware(&fw, - mdev->ramdisk, mdev->sdev->parent); + rc = request_firmware(&fw, mdev->cosm_dev->ramdisk, &mdev->pdev->dev); if (rc < 0) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "ramdisk request_firmware failed: %d %s\n", - rc, mdev->ramdisk); + rc, mdev->cosm_dev->ramdisk); goto error; } /* @@ -424,10 +421,10 @@ mic_x100_get_boot_addr(struct mic_device *mdev) scratch2 = mdev->ops->read_spad(mdev, MIC_X100_DOWNLOAD_INFO); boot_addr = MIC_X100_SPAD2_DOWNLOAD_ADDR(scratch2); - dev_dbg(mdev->sdev->parent, "%s %d boot_addr 0x%x\n", + dev_dbg(&mdev->pdev->dev, "%s %d boot_addr 0x%x\n", __func__, __LINE__, boot_addr); if (boot_addr > (1 << 31)) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "incorrect bootaddr 0x%x\n", boot_addr); rc = -EINVAL; @@ -455,37 +452,37 @@ mic_x100_load_firmware(struct mic_device *mdev, const char *buf) if (rc) goto error; /* load OS */ - rc = request_firmware(&fw, mdev->firmware, mdev->sdev->parent); + rc = request_firmware(&fw, mdev->cosm_dev->firmware, &mdev->pdev->dev); if (rc < 0) { - dev_err(mdev->sdev->parent, + dev_err(&mdev->pdev->dev, "ramdisk request_firmware failed: %d %s\n", - rc, mdev->firmware); + rc, mdev->cosm_dev->firmware); goto error; } if (mdev->bootaddr > mdev->aper.len - fw->size) { rc = -EINVAL; - dev_err(mdev->sdev->parent, "%s %d rc %d bootaddr 0x%x\n", + dev_err(&mdev->pdev->dev, "%s %d rc %d bootaddr 0x%x\n", __func__, __LINE__, rc, mdev->bootaddr); release_firmware(fw); goto error; } memcpy_toio(mdev->aper.va + mdev->bootaddr, fw->data, fw->size); mdev->ops->write_spad(mdev, MIC_X100_FW_SIZE, fw->size); - if (!strcmp(mdev->bootmode, "elf")) + if (!strcmp(mdev->cosm_dev->bootmode, "flash")) goto done; /* load command line */ rc = mic_x100_load_command_line(mdev, fw); if (rc) { - dev_err(mdev->sdev->parent, "%s %d rc %d\n", + dev_err(&mdev->pdev->dev, "%s %d rc %d\n", __func__, __LINE__, rc); goto error; } release_firmware(fw); /* load ramdisk */ - if (mdev->ramdisk) + if (mdev->cosm_dev->ramdisk) rc = mic_x100_load_ramdisk(mdev); error: - dev_dbg(mdev->sdev->parent, "%s %d rc %d\n", __func__, __LINE__, rc); + dev_dbg(&mdev->pdev->dev, "%s %d rc %d\n", __func__, __LINE__, rc); done: return rc; } |