| Message ID | 20241026004423.135-1-tanghuan@vivo.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v2] ufs: core: Add WB buffer resize support | expand |
Hi Huan, kernel test robot noticed the following build errors: [auto build test ERROR on jejb-scsi/for-next] [also build test ERROR on mkp-scsi/for-next linus/master v6.12-rc4 next-20241025] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Huan-Tang/ufs-core-Add-WB-buffer-resize-support/20241026-084545 base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next patch link: https://lore.kernel.org/r/20241026004423.135-1-tanghuan%40vivo.com patch subject: [PATCH v2] ufs: core: Add WB buffer resize support config: i386-randconfig-141-20241026 (https://download.01.org/0day-ci/archive/20241027/202410270024.rwb7xAgC-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241027/202410270024.rwb7xAgC-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202410270024.rwb7xAgC-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/ufs/core/ufs-sysfs.c: In function 'wb_toggle_buf_resize_store': >> drivers/ufs/core/ufs-sysfs.c:441:9: error: 'index' undeclared (first use in this function) 441 | index = ufshcd_wb_get_query_index(hba); | ^~~~~ drivers/ufs/core/ufs-sysfs.c:441:9: note: each undeclared identifier is reported only once for each function it appears in Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GET_FREE_REGION Depends on [n]: SPARSEMEM [=n] Selected by [m]: - RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y] vim +/index +441 drivers/ufs/core/ufs-sysfs.c 413 414 static ssize_t wb_toggle_buf_resize_store(struct device *dev, 415 struct device_attribute *attr, const char *buf, size_t count) 416 { 417 struct ufs_hba *hba = dev_get_drvdata(dev); 418 unsigned int wb_buf_resize_op; 419 ssize_t res; 420 421 if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_enabled || 422 !hba->dev_info.b_presrv_uspc_en) { 423 dev_err(dev, "The WB buf resize is not allowed!\n"); 424 return -EOPNOTSUPP; 425 } 426 427 if (kstrtouint(buf, 0, &wb_buf_resize_op)) 428 return -EINVAL; 429 430 if (wb_buf_resize_op != 0x01 && wb_buf_resize_op != 0x02) { 431 dev_err(dev, "The operation %u is invalid!\n", wb_buf_resize_op); 432 return -EINVAL; 433 } 434 435 down(&hba->host_sem); 436 if (!ufshcd_is_user_access_allowed(hba)) { 437 res = -EBUSY; 438 goto out; 439 } 440 > 441 index = ufshcd_wb_get_query_index(hba); 442 ufshcd_rpm_get_sync(hba); 443 res = ufshcd_wb_toggle_buf_resize(hba, wb_buf_resize_op); 444 ufshcd_rpm_put_sync(hba); 445 446 out: 447 up(&hba->host_sem); 448 return res < 0 ? res : count; 449 } 450
Hi Tang, I saw that "Both UFS 4.1 and UFS 5.0 are currently in development" have not been officially published yet. Are you keen to incorporate features based on an unpublished standard? Kind regards, Bean On Sat, 2024-10-26 at 08:44 +0800, Huan Tang wrote: > Support WB buffer resize function through sysfs, the host can obtain > resize hint and resize status and enable the resize operation. To > achieve this goals, three sysfs nodes have been added: > 1. wb_toggle_buf_resize > 2. wb_buf_resize_hint > 3. wb_buf_resize_status > > The detailed definition of the three nodes can be found in the sysfs > documentation. > > Changelog > === > v1 - > v2: > remove unused variable "u8 index", > drivers/ufs/core/ufs-sysfs.c:419:12: warning: variable > 'index' > set but not used. > > v1 > > https://lore.kernel.org/all/20241025085924.4855-1-tanghuan@vivo.com/ > > Signed-off-by: Huan Tang <tanghuan@vivo.com> > Signed-off-by: Lu Hongfei <luhongfei@vivo.com> > --- > Documentation/ABI/testing/sysfs-driver-ufs | 52 > ++++++++++++++++++++++ > drivers/ufs/core/ufs-sysfs.c | 43 ++++++++++++++++++ > drivers/ufs/core/ufshcd.c | 15 +++++++ > include/ufs/ufs.h | 5 ++- > include/ufs/ufshcd.h | 1 + > 5 files changed, 115 insertions(+), 1 deletion(-) > > diff --git a/Documentation/ABI/testing/sysfs-driver-ufs > b/Documentation/ABI/testing/sysfs-driver-ufs > index 5fa6655aee84..dbaa84277801 100644 > --- a/Documentation/ABI/testing/sysfs-driver-ufs > +++ b/Documentation/ABI/testing/sysfs-driver-ufs > @@ -1559,3 +1559,55 @@ Description: > Symbol - HCMID. This file shows the UFSHCD > manufacturer id. > The Manufacturer ID is defined by JEDEC in JEDEC- > JEP106. > The file is read only. > + > +What: /sys/bus/platform/drivers/ufshcd/*/wb_toggle_buf_resi > ze > +What: /sys/bus/platform/devices/*.ufs/wb_toggle_buf_resize > +Date: Qct 2024 > +Contact: Huan Tang <tanghuan@vivo.com> > +Description: > + The host can decrease or increase the WriteBooster > Buffer size by setting > + this file. > + > + ====== ====================================== > + 00h Idle (There is no resize operation) > + 01h Decrease WriteBooster Buffer Size > + 02h Increase WriteBooster Buffer Size > + Others Reserved > + ====== ====================================== > + > + The file is write only. > + > +What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_buf_ > resize_hint > +What: /sys/bus/platform/devices/*.ufs/attributes/wb_buf_res > ize_hint > +Date: Qct 2024 > +Contact: Huan Tang <tanghuan@vivo.com> > +Description: > + wb_buf_resize_hint indicates hint information about > which type of resize for > + WriteBooster Buffer is recommended by the device. > + > + ====== ====================================== > + 00h Recommend keep the buffer size > + 01h Recommend to decrease the buffer size > + 02h Recommend to increase the buffer size > + Others: Reserved > + ====== ====================================== > + > + The file is read only. > + > +What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_buf_ > resize_status > +What: /sys/bus/platform/devices/*.ufs/attributes/wb_buf_res > ize_status > +Date: Qct 2024 > +Contact: Huan Tang <tanghuan@vivo.com> > +Description: > + The host can check the Resize operation status of the > WriteBooster Buffer > + by reading this file. > + > + ====== ======================================== > + 00h Idle (resize operation is not issued) > + 01h Resize operation in progress > + 02h Resize operation completed successfully > + 03h Resize operation general failure > + Others Reserved > + ====== ======================================== > + > + The file is read only. > diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs- > sysfs.c > index 265f21133b63..bb21982394c8 100644 > --- a/drivers/ufs/core/ufs-sysfs.c > +++ b/drivers/ufs/core/ufs-sysfs.c > @@ -411,6 +411,43 @@ static ssize_t wb_flush_threshold_store(struct > device *dev, > return count; > } > > +static ssize_t wb_toggle_buf_resize_store(struct device *dev, > + struct device_attribute *attr, const char *buf, > size_t count) > +{ > + struct ufs_hba *hba = dev_get_drvdata(dev); > + unsigned int wb_buf_resize_op; > + ssize_t res; > + > + if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_enabled > || > + !hba->dev_info.b_presrv_uspc_en) { > + dev_err(dev, "The WB buf resize is not allowed!\n"); > + return -EOPNOTSUPP; > + } > + > + if (kstrtouint(buf, 0, &wb_buf_resize_op)) > + return -EINVAL; > + > + if (wb_buf_resize_op != 0x01 && wb_buf_resize_op != 0x02) { > + dev_err(dev, "The operation %u is invalid!\n", > wb_buf_resize_op); > + return -EINVAL; > + } > + > + down(&hba->host_sem); > + if (!ufshcd_is_user_access_allowed(hba)) { > + res = -EBUSY; > + goto out; > + } > + > + index = ufshcd_wb_get_query_index(hba); > + ufshcd_rpm_get_sync(hba); > + res = ufshcd_wb_toggle_buf_resize(hba, wb_buf_resize_op); > + ufshcd_rpm_put_sync(hba); > + > +out: > + up(&hba->host_sem); > + return res < 0 ? res : count; > +} > + > /** > * pm_qos_enable_show - sysfs handler to show pm qos enable value > * @dev: device associated with the UFS controller > @@ -468,6 +505,7 @@ static DEVICE_ATTR_RW(auto_hibern8); > static DEVICE_ATTR_RW(wb_on); > static DEVICE_ATTR_RW(enable_wb_buf_flush); > static DEVICE_ATTR_RW(wb_flush_threshold); > +static DEVICE_ATTR_WO(wb_toggle_buf_resize); > static DEVICE_ATTR_RW(rtc_update_ms); > static DEVICE_ATTR_RW(pm_qos_enable); > > @@ -482,6 +520,7 @@ static struct attribute *ufs_sysfs_ufshcd_attrs[] > = { > &dev_attr_wb_on.attr, > &dev_attr_enable_wb_buf_flush.attr, > &dev_attr_wb_flush_threshold.attr, > + &dev_attr_wb_toggle_buf_resize.attr, > &dev_attr_rtc_update_ms.attr, > &dev_attr_pm_qos_enable.attr, > NULL > @@ -1526,6 +1565,8 @@ UFS_ATTRIBUTE(wb_flush_status, > _WB_FLUSH_STATUS); > UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE); > UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST); > UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE); > +UFS_ATTRIBUTE(wb_buf_resize_hint, _WB_BUF_RESIZE_HINT); > +UFS_ATTRIBUTE(wb_buf_resize_status, _WB_BUF_RESIZE_STATUS); > > > static struct attribute *ufs_sysfs_attributes[] = { > @@ -1549,6 +1590,8 @@ static struct attribute *ufs_sysfs_attributes[] > = { > &dev_attr_wb_avail_buf.attr, > &dev_attr_wb_life_time_est.attr, > &dev_attr_wb_cur_buf.attr, > + &dev_attr_wb_buf_resize_hint.attr, > + &dev_attr_wb_buf_resize_status.attr, > NULL, > }; > > diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c > index 630409187c10..c28915debab6 100644 > --- a/drivers/ufs/core/ufshcd.c > +++ b/drivers/ufs/core/ufshcd.c > @@ -6167,6 +6167,21 @@ static bool ufshcd_wb_need_flush(struct > ufs_hba *hba) > return ufshcd_wb_presrv_usrspc_keep_vcc_on(hba, avail_buf); > } > > +int ufshcd_wb_toggle_buf_resize(struct ufs_hba *hba, u32 op) > +{ > + int ret; > + u8 index; > + > + index = ufshcd_wb_get_query_index(hba); > + ret = ufshcd_query_attr_retry(hba, > UPIU_QUERY_OPCODE_WRITE_ATTR, > + QUERY_ATTR_IDN_WB_BUF_RESIZE_EN, > index, 0, &op); > + if (ret) > + dev_err(hba->dev, "%s: Enable WB buf resize operation > failed %d\n", > + __func__, ret); > + > + return ret; > +} > + > static void ufshcd_rpm_dev_flush_recheck_work(struct work_struct > *work) > { > struct ufs_hba *hba = container_of(to_delayed_work(work), > diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h > index e594abe5d05f..f737d98044ac 100644 > --- a/include/ufs/ufs.h > +++ b/include/ufs/ufs.h > @@ -181,7 +181,10 @@ enum attr_idn { > QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST = 0x1E, > QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE = 0x1F, > QUERY_ATTR_IDN_EXT_IID_EN = 0x2A, > - QUERY_ATTR_IDN_TIMESTAMP = 0x30 > + QUERY_ATTR_IDN_TIMESTAMP = 0x30, > + QUERY_ATTR_IDN_WB_BUF_RESIZE_HINT = 0x3C, > + QUERY_ATTR_IDN_WB_BUF_RESIZE_EN = 0x3D, > + QUERY_ATTR_IDN_WB_BUF_RESIZE_STATUS = 0x3E, > }; > > /* Descriptor idn for Query requests */ > diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h > index a95282b9f743..cbe208ce9293 100644 > --- a/include/ufs/ufshcd.h > +++ b/include/ufs/ufshcd.h > @@ -1454,6 +1454,7 @@ int ufshcd_advanced_rpmb_req_handler(struct > ufs_hba *hba, struct utp_upiu_req *r > struct scatterlist *sg_list, > enum dma_data_direction dir); > int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable); > int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable); > +int ufshcd_wb_toggle_buf_resize(struct ufs_hba *hba, u32 op); > int ufshcd_suspend_prepare(struct device *dev); > int __ufshcd_suspend_prepare(struct device *dev, bool > rpm_ok_for_spm); > void ufshcd_resume_complete(struct device *dev);
On 10/26/24 12:40 PM, Bean Huo wrote: > I saw that "Both UFS 4.1 and UFS 5.0 are currently in development" have > not been officially published yet. Are you keen to incorporate features > based on an unpublished standard? Hi Bean, UFS WG members approved the WB buffer resize functionality through the JEDEC voting process about one year ago. Isn't that sufficient to implement this functionality in the kernel? See also the JC-64.1 December 7, 2023 meeting minutes. Thanks, Bart.
> -----Original Message----- > From: Bart Van Assche <bvanassche@acm.org> > Sent: Montag, 28. Oktober 2024 19:38 > To: Bean Huo <huobean@gmail.com>; Huan Tang <tanghuan@vivo.com>; > linux-scsi@vger.kernel.org > Cc: opensource.kernel@vivo.com > Subject: [EXT] Re: [PATCH v2] ufs: core: Add WB buffer resize support > > CAUTION: EXTERNAL EMAIL. Do not click links or open attachments unless > you recognize the sender and were expecting this message. > > > On 10/26/24 12:40 PM, Bean Huo wrote: > > I saw that "Both UFS 4.1 and UFS 5.0 are currently in development" > > have not been officially published yet. Are you keen to incorporate > > features based on an unpublished standard? > > Hi Bean, > > UFS WG members approved the WB buffer resize functionality through the > JEDEC voting process about one year ago. Isn't that sufficient to implement > this functionality in the kernel? See also the JC-64.1 December 7, 2023 > meeting minutes. > > Thanks, > > Bart. > Bart, That's not a reason we must implement it. Not everything that exists is reasonable, especially those things designed by humans. My question is, UFS 4.1 has not been officially published. However, I noticed that you have strongly supported this work. Even though I don't think it's necessary to enable a Sysfs node entry for this configuration. Kind regards, Bean
On 10/28/24 1:04 PM, Bean Huo wrote: > Even though I don't think it's necessary to enable a Sysfs node entry > for this configuration. Right, a motivation of why this functionality should be available in sysfs is missing. An explanation should be added in the patch description. Thanks, Bart.
> -----Original Message----- > From: Bart Van Assche <bvanassche@acm.org> > Sent: Montag, 28. Oktober 2024 21:10 > To: Bean Huo <beanhuo@micron.com>; Bean Huo <huobean@gmail.com>; > Huan Tang <tanghuan@vivo.com>; linux-scsi@vger.kernel.org > Cc: opensource.kernel@vivo.com > Subject: Re: [EXT] Re: [PATCH v2] ufs: core: Add WB buffer resize support > > CAUTION: EXTERNAL EMAIL. Do not click links or open attachments unless > you recognize the sender and were expecting this message. > > > On 10/28/24 1:04 PM, Bean Huo wrote: > > Even though I don't think it's necessary to enable a Sysfs node entry > > for this configuration. > > Right, a motivation of why this functionality should be available in sysfs is > missing. An explanation should be added in the patch description. > > Thanks, > > Bart. I would like to say this actually: committee approval of a ballot does not give a company or individual the ability to disclose the feature outside of JEDEC. Unless JEDEC has published details relating to a particular feature in a not-yet-board-approved standard, these details should be considered proprietary to JEDEC members and not revealed outside of JEDEC until JEDEC board approval has occurred. For UFS 4.1, which will include the WB resize feature. Has not officially published yet. Before that, there is no public information to release to the community. Kind regards, Bean
> I would like to say this actually: committee approval of a ballot does not give a company or individual the ability to disclose the > feature outside of JEDEC. > Unless JEDEC has published details relating to a particular feature in a not-yet-board-approved standard, these details should be > considered proprietary to JEDEC members and not revealed outside of JEDEC until JEDEC board approval has occurred. For UFS 4.1, > which will include the WB resize feature. Has not officially published yet. Before that, there is no public information to release to > the community. > Kind regards, > Bean Hi Bean, JEDEC expects to release it in early November this year. The spec for this feature has been confirmed. Do we need to wait until the standard is officially released before discussing this submission? Thanks Huan
diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs index 5fa6655aee84..dbaa84277801 100644 --- a/Documentation/ABI/testing/sysfs-driver-ufs +++ b/Documentation/ABI/testing/sysfs-driver-ufs @@ -1559,3 +1559,55 @@ Description: Symbol - HCMID. This file shows the UFSHCD manufacturer id. The Manufacturer ID is defined by JEDEC in JEDEC-JEP106. The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/wb_toggle_buf_resize +What: /sys/bus/platform/devices/*.ufs/wb_toggle_buf_resize +Date: Qct 2024 +Contact: Huan Tang <tanghuan@vivo.com> +Description: + The host can decrease or increase the WriteBooster Buffer size by setting + this file. + + ====== ====================================== + 00h Idle (There is no resize operation) + 01h Decrease WriteBooster Buffer Size + 02h Increase WriteBooster Buffer Size + Others Reserved + ====== ====================================== + + The file is write only. + +What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_buf_resize_hint +What: /sys/bus/platform/devices/*.ufs/attributes/wb_buf_resize_hint +Date: Qct 2024 +Contact: Huan Tang <tanghuan@vivo.com> +Description: + wb_buf_resize_hint indicates hint information about which type of resize for + WriteBooster Buffer is recommended by the device. + + ====== ====================================== + 00h Recommend keep the buffer size + 01h Recommend to decrease the buffer size + 02h Recommend to increase the buffer size + Others: Reserved + ====== ====================================== + + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_buf_resize_status +What: /sys/bus/platform/devices/*.ufs/attributes/wb_buf_resize_status +Date: Qct 2024 +Contact: Huan Tang <tanghuan@vivo.com> +Description: + The host can check the Resize operation status of the WriteBooster Buffer + by reading this file. + + ====== ======================================== + 00h Idle (resize operation is not issued) + 01h Resize operation in progress + 02h Resize operation completed successfully + 03h Resize operation general failure + Others Reserved + ====== ======================================== + + The file is read only. diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c index 265f21133b63..bb21982394c8 100644 --- a/drivers/ufs/core/ufs-sysfs.c +++ b/drivers/ufs/core/ufs-sysfs.c @@ -411,6 +411,43 @@ static ssize_t wb_flush_threshold_store(struct device *dev, return count; } +static ssize_t wb_toggle_buf_resize_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + unsigned int wb_buf_resize_op; + ssize_t res; + + if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_enabled || + !hba->dev_info.b_presrv_uspc_en) { + dev_err(dev, "The WB buf resize is not allowed!\n"); + return -EOPNOTSUPP; + } + + if (kstrtouint(buf, 0, &wb_buf_resize_op)) + return -EINVAL; + + if (wb_buf_resize_op != 0x01 && wb_buf_resize_op != 0x02) { + dev_err(dev, "The operation %u is invalid!\n", wb_buf_resize_op); + return -EINVAL; + } + + down(&hba->host_sem); + if (!ufshcd_is_user_access_allowed(hba)) { + res = -EBUSY; + goto out; + } + + index = ufshcd_wb_get_query_index(hba); + ufshcd_rpm_get_sync(hba); + res = ufshcd_wb_toggle_buf_resize(hba, wb_buf_resize_op); + ufshcd_rpm_put_sync(hba); + +out: + up(&hba->host_sem); + return res < 0 ? res : count; +} + /** * pm_qos_enable_show - sysfs handler to show pm qos enable value * @dev: device associated with the UFS controller @@ -468,6 +505,7 @@ static DEVICE_ATTR_RW(auto_hibern8); static DEVICE_ATTR_RW(wb_on); static DEVICE_ATTR_RW(enable_wb_buf_flush); static DEVICE_ATTR_RW(wb_flush_threshold); +static DEVICE_ATTR_WO(wb_toggle_buf_resize); static DEVICE_ATTR_RW(rtc_update_ms); static DEVICE_ATTR_RW(pm_qos_enable); @@ -482,6 +520,7 @@ static struct attribute *ufs_sysfs_ufshcd_attrs[] = { &dev_attr_wb_on.attr, &dev_attr_enable_wb_buf_flush.attr, &dev_attr_wb_flush_threshold.attr, + &dev_attr_wb_toggle_buf_resize.attr, &dev_attr_rtc_update_ms.attr, &dev_attr_pm_qos_enable.attr, NULL @@ -1526,6 +1565,8 @@ UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS); UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE); UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST); UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE); +UFS_ATTRIBUTE(wb_buf_resize_hint, _WB_BUF_RESIZE_HINT); +UFS_ATTRIBUTE(wb_buf_resize_status, _WB_BUF_RESIZE_STATUS); static struct attribute *ufs_sysfs_attributes[] = { @@ -1549,6 +1590,8 @@ static struct attribute *ufs_sysfs_attributes[] = { &dev_attr_wb_avail_buf.attr, &dev_attr_wb_life_time_est.attr, &dev_attr_wb_cur_buf.attr, + &dev_attr_wb_buf_resize_hint.attr, + &dev_attr_wb_buf_resize_status.attr, NULL, }; diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 630409187c10..c28915debab6 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -6167,6 +6167,21 @@ static bool ufshcd_wb_need_flush(struct ufs_hba *hba) return ufshcd_wb_presrv_usrspc_keep_vcc_on(hba, avail_buf); } +int ufshcd_wb_toggle_buf_resize(struct ufs_hba *hba, u32 op) +{ + int ret; + u8 index; + + index = ufshcd_wb_get_query_index(hba); + ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, + QUERY_ATTR_IDN_WB_BUF_RESIZE_EN, index, 0, &op); + if (ret) + dev_err(hba->dev, "%s: Enable WB buf resize operation failed %d\n", + __func__, ret); + + return ret; +} + static void ufshcd_rpm_dev_flush_recheck_work(struct work_struct *work) { struct ufs_hba *hba = container_of(to_delayed_work(work), diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h index e594abe5d05f..f737d98044ac 100644 --- a/include/ufs/ufs.h +++ b/include/ufs/ufs.h @@ -181,7 +181,10 @@ enum attr_idn { QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST = 0x1E, QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE = 0x1F, QUERY_ATTR_IDN_EXT_IID_EN = 0x2A, - QUERY_ATTR_IDN_TIMESTAMP = 0x30 + QUERY_ATTR_IDN_TIMESTAMP = 0x30, + QUERY_ATTR_IDN_WB_BUF_RESIZE_HINT = 0x3C, + QUERY_ATTR_IDN_WB_BUF_RESIZE_EN = 0x3D, + QUERY_ATTR_IDN_WB_BUF_RESIZE_STATUS = 0x3E, }; /* Descriptor idn for Query requests */ diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index a95282b9f743..cbe208ce9293 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -1454,6 +1454,7 @@ int ufshcd_advanced_rpmb_req_handler(struct ufs_hba *hba, struct utp_upiu_req *r struct scatterlist *sg_list, enum dma_data_direction dir); int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable); int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable); +int ufshcd_wb_toggle_buf_resize(struct ufs_hba *hba, u32 op); int ufshcd_suspend_prepare(struct device *dev); int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm); void ufshcd_resume_complete(struct device *dev);