From: Adrian Hunter <adrian.hunter@intel.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc <linux-mmc@vger.kernel.org>,
linux-block <linux-block@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Bough Chen <haibo.chen@nxp.com>,
Alex Lemberg <alex.lemberg@sandisk.com>,
Mateusz Nowak <mateusz.nowak@intel.com>,
Yuliy Izrailov <Yuliy.Izrailov@sandisk.com>,
Jaehoon Chung <jh80.chung@samsung.com>,
Dong Aisheng <dongas86@gmail.com>,
Das Asutosh <asutoshd@codeaurora.org>,
Zhangfei Gao <zhangfei.gao@gmail.com>,
Sahitya Tummala <stummala@codeaurora.org>,
Harjani Ritesh <riteshh@codeaurora.org>,
Venu Byravarasu <vbyravarasu@nvidia.com>,
Linus Walleij <linus.walleij@linaro.org>,
Shawn Lin <shawn.lin@rock-chips.com>,
Christoph Hellwig <hch@lst.de>
Subject: [PATCH V13 06/10] mmc: sdhci-pci: Add CQHCI support for Intel GLK
Date: Fri, 3 Nov 2017 15:20:16 +0200 [thread overview]
Message-ID: <1509715220-31885-7-git-send-email-adrian.hunter@intel.com> (raw)
In-Reply-To: <1509715220-31885-1-git-send-email-adrian.hunter@intel.com>
Add CQHCI initialization and implement CQHCI operations for Intel GLK.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
drivers/mmc/host/Kconfig | 1 +
drivers/mmc/host/sdhci-pci-core.c | 155 +++++++++++++++++++++++++++++++++++++-
2 files changed, 155 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 3092b7085cb5..2b02a9788bb6 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -81,6 +81,7 @@ config MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
config MMC_SDHCI_PCI
tristate "SDHCI support on PCI bus"
depends on MMC_SDHCI && PCI
+ select MMC_CQHCI
help
This selects the PCI Secure Digital Host Controller Interface.
Most controllers found today are PCI devices.
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index 3e4f04fd5175..110c634cfb43 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -30,6 +30,8 @@
#include <linux/mmc/sdhci-pci-data.h>
#include <linux/acpi.h>
+#include "cqhci.h"
+
#include "sdhci.h"
#include "sdhci-pci.h"
@@ -116,6 +118,28 @@ int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
return 0;
}
+
+static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip)
+{
+ int ret;
+
+ ret = cqhci_suspend(chip->slots[0]->host->mmc);
+ if (ret)
+ return ret;
+
+ return sdhci_pci_suspend_host(chip);
+}
+
+static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip)
+{
+ int ret;
+
+ ret = sdhci_pci_resume_host(chip);
+ if (ret)
+ return ret;
+
+ return cqhci_resume(chip->slots[0]->host->mmc);
+}
#endif
#ifdef CONFIG_PM
@@ -166,8 +190,48 @@ static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
return 0;
}
+
+static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip)
+{
+ int ret;
+
+ ret = cqhci_suspend(chip->slots[0]->host->mmc);
+ if (ret)
+ return ret;
+
+ return sdhci_pci_runtime_suspend_host(chip);
+}
+
+static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip)
+{
+ int ret;
+
+ ret = sdhci_pci_runtime_resume_host(chip);
+ if (ret)
+ return ret;
+
+ return cqhci_resume(chip->slots[0]->host->mmc);
+}
#endif
+static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask)
+{
+ int cmd_error = 0;
+ int data_error = 0;
+
+ if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
+ return intmask;
+
+ cqhci_irq(host->mmc, intmask, cmd_error, data_error);
+
+ return 0;
+}
+
+static void sdhci_pci_dumpregs(struct mmc_host *mmc)
+{
+ sdhci_dumpregs(mmc_priv(mmc));
+}
+
/*****************************************************************************\
* *
* Hardware specific quirk handling *
@@ -583,6 +647,18 @@ static void sdhci_intel_voltage_switch(struct sdhci_host *host)
.voltage_switch = sdhci_intel_voltage_switch,
};
+static const struct sdhci_ops sdhci_intel_glk_ops = {
+ .set_clock = sdhci_set_clock,
+ .set_power = sdhci_intel_set_power,
+ .enable_dma = sdhci_pci_enable_dma,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
+ .hw_reset = sdhci_pci_hw_reset,
+ .voltage_switch = sdhci_intel_voltage_switch,
+ .irq = sdhci_cqhci_irq,
+};
+
static void byt_read_dsm(struct sdhci_pci_slot *slot)
{
struct intel_host *intel_host = sdhci_pci_priv(slot);
@@ -612,12 +688,80 @@ static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
{
int ret = byt_emmc_probe_slot(slot);
+ slot->host->mmc->caps2 |= MMC_CAP2_CQE;
+
if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES,
slot->host->mmc_host_ops.hs400_enhanced_strobe =
intel_hs400_enhanced_strobe;
+ slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
+ }
+
+ return ret;
+}
+
+static void glk_cqe_enable(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ u32 reg;
+
+ /*
+ * CQE gets stuck if it sees Buffer Read Enable bit set, which can be
+ * the case after tuning, so ensure the buffer is drained.
+ */
+ reg = sdhci_readl(host, SDHCI_PRESENT_STATE);
+ while (reg & SDHCI_DATA_AVAILABLE) {
+ sdhci_readl(host, SDHCI_BUFFER);
+ reg = sdhci_readl(host, SDHCI_PRESENT_STATE);
+ }
+
+ sdhci_cqe_enable(mmc);
+}
+
+static const struct cqhci_host_ops glk_cqhci_ops = {
+ .enable = glk_cqe_enable,
+ .disable = sdhci_cqe_disable,
+ .dumpregs = sdhci_pci_dumpregs,
+};
+
+static int glk_emmc_add_host(struct sdhci_pci_slot *slot)
+{
+ struct device *dev = &slot->chip->pdev->dev;
+ struct sdhci_host *host = slot->host;
+ struct cqhci_host *cq_host;
+ bool dma64;
+ int ret;
+
+ ret = sdhci_setup_host(host);
+ if (ret)
+ return ret;
+
+ cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
+ if (!cq_host) {
+ ret = -ENOMEM;
+ goto cleanup;
}
+ cq_host->mmio = host->ioaddr + 0x200;
+ cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ;
+ cq_host->ops = &glk_cqhci_ops;
+
+ dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
+ if (dma64)
+ cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
+
+ ret = cqhci_init(cq_host, host->mmc, dma64);
+ if (ret)
+ goto cleanup;
+
+ ret = __sdhci_add_host(host);
+ if (ret)
+ goto cleanup;
+
+ return 0;
+
+cleanup:
+ sdhci_cleanup_host(host);
return ret;
}
@@ -699,11 +843,20 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
.allow_runtime_pm = true,
.probe_slot = glk_emmc_probe_slot,
+ .add_host = glk_emmc_add_host,
+#ifdef CONFIG_PM_SLEEP
+ .suspend = sdhci_cqhci_suspend,
+ .resume = sdhci_cqhci_resume,
+#endif
+#ifdef CONFIG_PM
+ .runtime_suspend = sdhci_cqhci_runtime_suspend,
+ .runtime_resume = sdhci_cqhci_runtime_resume,
+#endif
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
SDHCI_QUIRK2_STOP_WITH_TC,
- .ops = &sdhci_intel_byt_ops,
+ .ops = &sdhci_intel_glk_ops,
.priv_size = sizeof(struct intel_host),
};
--
1.9.1
next prev parent reply other threads:[~2017-11-03 13:21 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-03 13:20 [PATCH V13 00/10] mmc: Add Command Queue support Adrian Hunter
2017-11-03 13:20 ` [PATCH V13 01/10] mmc: core: Add parameter use_blk_mq Adrian Hunter
2017-11-06 8:38 ` Linus Walleij
2017-11-03 13:20 ` [PATCH V13 02/10] mmc: block: Add error-handling comments Adrian Hunter
2017-11-06 8:39 ` Linus Walleij
2017-11-03 13:20 ` [PATCH V13 03/10] mmc: block: Add blk-mq support Adrian Hunter
2017-11-08 8:54 ` Linus Walleij
2017-11-09 10:42 ` Adrian Hunter
2017-11-09 15:52 ` Linus Walleij
2017-11-10 10:19 ` Linus Walleij
2017-11-14 13:10 ` Adrian Hunter
2017-11-14 14:50 ` Linus Walleij
2017-11-15 10:55 ` Ulf Hansson
2017-11-15 13:07 ` Adrian Hunter
2017-11-16 7:19 ` Ulf Hansson
2017-11-03 13:20 ` [PATCH V13 04/10] mmc: block: Add CQE support Adrian Hunter
2017-11-08 9:00 ` Linus Walleij
2017-11-08 13:20 ` Adrian Hunter
2017-11-09 12:04 ` Linus Walleij
2017-11-09 12:39 ` Adrian Hunter
2017-11-03 13:20 ` [PATCH V13 05/10] mmc: cqhci: support for command queue enabled host Adrian Hunter
2017-11-08 9:22 ` Linus Walleij
2017-11-08 14:14 ` Adrian Hunter
2017-11-09 12:26 ` Linus Walleij
2017-11-09 12:55 ` Adrian Hunter
2017-11-10 8:29 ` Linus Walleij
2017-11-09 13:41 ` Ulf Hansson
2017-11-09 14:20 ` Adrian Hunter
2017-11-03 13:20 ` Adrian Hunter [this message]
2017-11-08 9:24 ` [PATCH V13 06/10] mmc: sdhci-pci: Add CQHCI support for Intel GLK Linus Walleij
2017-11-09 7:12 ` Adrian Hunter
2017-11-10 8:18 ` Linus Walleij
2017-11-09 13:37 ` Ulf Hansson
2017-11-03 13:20 ` [PATCH V13 07/10] mmc: block: blk-mq: Add support for direct completion Adrian Hunter
2017-11-08 9:28 ` Linus Walleij
2017-11-09 7:27 ` Adrian Hunter
2017-11-09 12:34 ` Linus Walleij
2017-11-09 15:33 ` Adrian Hunter
2017-11-09 13:07 ` Ulf Hansson
2017-11-09 13:15 ` Adrian Hunter
2017-11-03 13:20 ` [PATCH V13 08/10] mmc: block: blk-mq: Separate card polling from recovery Adrian Hunter
2017-11-08 9:30 ` Linus Walleij
2017-11-09 7:56 ` Adrian Hunter
2017-11-09 12:52 ` Linus Walleij
2017-11-09 13:02 ` Adrian Hunter
2017-11-10 8:25 ` Linus Walleij
2017-11-03 13:20 ` [PATCH V13 09/10] mmc: block: blk-mq: Stop using card_busy_detect() Adrian Hunter
2017-11-09 13:36 ` Ulf Hansson
2017-11-09 15:24 ` Adrian Hunter
2017-11-03 13:20 ` [PATCH V13 10/10] mmc: block: blk-mq: Stop using legacy recovery Adrian Hunter
2017-11-08 9:38 ` Linus Walleij
2017-11-09 7:43 ` Adrian Hunter
2017-11-09 12:45 ` Linus Walleij
[not found] ` <CGME20171116094642epcas1p14018cb1c475efa38942109dc24cd6da9@epcas1p1.samsung.com>
2017-11-16 9:46 ` [PATCH V13 00/10] mmc: Add Command Queue support Bartlomiej Zolnierkiewicz
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