This series add support for Renesas USB controllers uPD720201 and uPD720202.
These require firmware to be loaded and in case devices have ROM those can
also be programmed if empty. If ROM is programmed, it runs from ROM as well.
This includes two patches from Christian which supported these controllers
w/o ROM and later my patches for ROM support and multiple firmware versions.
Changes in v2:
used macros for timeout count and delay
removed renesas_fw_alive_check
cleaned renesas_fw_callback
removed recurion for renesas_fw_download
added MODULE_FIRMWARE
added comment for multiple fw order
Christian Lamparter (2):
usb: xhci: add firmware loader for uPD720201 and uPD720202 w/o ROM
usb: xhci: handle uPD720201 and uPD720202 w/o ROM
Vinod Koul (3):
usb: xhci: Use register defined and field names
usb: xhci: Add ROM loader for uPD720201
usb: xhci: allow multiple firmware versions
drivers/usb/host/xhci-pci.c | 942 ++++++++++++++++++++++++++++++++++++
1 file changed, 942 insertions(+)
--
2.20.1
From: Christian Lamparter <[email protected]>
This patch adds a firmware loader for the uPD720201K8-711-BAC-A
and uPD720202K8-711-BAA-A variant. Both of these chips are listed
in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
devices which need the firmware loader on page 2 in order to
work as they "do not support the External ROM".
The "Firmware Download Sequence" is describe in chapter
"7.1 FW Download Interface" R19UH0078EJ0500 Rev.5.00 page 131.
The firmware "K2013080.mem" is available from a USB3.0 Host to
PCIe Adapter (PP2U-E card) "Firmware download" archive. An
alternative version can be sourced from Netgear's WNDR4700 GPL
archives.
The release notes of the PP2U-E's "Firmware Download" ver 2.0.1.3
(2012-06-15) state that the firmware is for the following devices:
- uPD720201 ES 2.0 sample whose revision ID is 2.
- uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
- uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
Cc: Yoshihiro Shimoda <[email protected]>
Signed-off-by: Christian Lamparter <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
[vkoul: fixed comments:
used macros for timeout count and delay
removed renesas_fw_alive_check
cleaned renesas_fw_callback
removed recurion for renesas_fw_download
added MODULE_FIRMWARE]
Signed-off-by: Vinod Koul <[email protected]>
---
drivers/usb/host/xhci-pci.c | 458 ++++++++++++++++++++++++++++++++++++
1 file changed, 458 insertions(+)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index c2fe218e051f..724d0f567d98 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -12,6 +12,8 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/acpi.h>
+#include <linux/firmware.h>
+#include <linux/unaligned/access_ok.h>
#include "xhci.h"
#include "xhci-trace.h"
@@ -55,6 +57,9 @@
#define PCI_DEVICE_ID_AMD_PROMONTORYA_1 0x43bc
#define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI 0x1142
+#define RENESAS_RETRY 1000
+#define RENESAS_DELAY 10
+
static const char hcd_name[] = "xhci_hcd";
static struct hc_driver __read_mostly xhci_pci_hc_driver;
@@ -279,6 +284,433 @@ static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
#endif /* CONFIG_ACPI */
+static const struct renesas_fw_entry {
+ const char *firmware_name;
+ u16 device;
+ u8 revision;
+ u16 expected_version;
+} renesas_fw_table[] = {
+ /*
+ * Only the uPD720201K8-711-BAC-A or uPD720202K8-711-BAA-A
+ * are listed in R19UH0078EJ0500 Rev.5.00 as devices which
+ * need the software loader.
+ *
+ * PP2U/ReleaseNote_USB3-201-202-FW.txt:
+ *
+ * Note: This firmware is for the following devices.
+ * - uPD720201 ES 2.0 sample whose revision ID is 2.
+ * - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
+ * - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
+ */
+ { "K2013080.mem", 0x0014, 0x02, 0x2013 },
+ { "K2013080.mem", 0x0014, 0x03, 0x2013 },
+ { "K2013080.mem", 0x0015, 0x02, 0x2013 },
+};
+
+MODULE_FIRMWARE("K2013080.mem");
+
+static const struct renesas_fw_entry *renesas_needs_fw_dl(struct pci_dev *dev)
+{
+ const struct renesas_fw_entry *entry;
+ size_t i;
+
+ /* This loader will only work with a RENESAS device. */
+ if (!(dev->vendor == PCI_VENDOR_ID_RENESAS))
+ return NULL;
+
+ for (i = 0; i < ARRAY_SIZE(renesas_fw_table); i++) {
+ entry = &renesas_fw_table[i];
+ if (entry->device == dev->device &&
+ entry->revision == dev->revision)
+ return entry;
+ }
+
+ return NULL;
+}
+
+static int renesas_fw_download_image(struct pci_dev *dev,
+ const u32 *fw,
+ size_t step)
+{
+ size_t i;
+ int err;
+ u8 fw_status;
+ bool data0_or_data1;
+
+ /*
+ * The hardware does alternate between two 32-bit pages.
+ * (This is because each row of the firmware is 8 bytes).
+ *
+ * for even steps we use DATA0, for odd steps DATA1.
+ */
+ data0_or_data1 = (step & 1) == 1;
+
+ /* step+1. Read "Set DATAX" and confirm it is cleared. */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(dev, 0xF5, &fw_status);
+ if (err)
+ return pcibios_err_to_errno(err);
+ if (!(fw_status & BIT(data0_or_data1)))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY)
+ return -ETIMEDOUT;
+
+ /*
+ * step+2. Write FW data to "DATAX".
+ * "LSB is left" => force little endian
+ */
+ err = pci_write_config_dword(dev, data0_or_data1 ? 0xFC : 0xF8,
+ (__force u32)cpu_to_le32(fw[step]));
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ udelay(100);
+
+ /* step+3. Set "Set DATAX". */
+ err = pci_write_config_byte(dev, 0xF5, BIT(data0_or_data1));
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ return 0;
+}
+
+static int renesas_fw_verify(struct pci_dev *dev,
+ const void *fw_data,
+ size_t length)
+{
+ const struct renesas_fw_entry *entry = renesas_needs_fw_dl(dev);
+ u16 fw_version_pointer;
+ u16 fw_version;
+
+ if (!entry)
+ return -EINVAL;
+
+ /*
+ * The Firmware's Data Format is describe in
+ * "6.3 Data Format" R19UH0078EJ0500 Rev.5.00 page 124
+ */
+
+ /* "Each row is 8 bytes". => firmware size must be a multiple of 8. */
+ if (length % 8 != 0)
+ dev_warn(&dev->dev, "firmware size is not a multiple of 8.");
+
+ /*
+ * The bootrom chips of the big brother have sizes up to 64k, let's
+ * assume that's the biggest the firmware can get.
+ */
+ if (length < 0x1000 || length >= 0x10000) {
+ dev_err(&dev->dev, "firmware is size %zd is not (4k - 64k).",
+ length);
+ return -EINVAL;
+ }
+
+ /* The First 2 bytes are fixed value (55aa). "LSB on Left" */
+ if (get_unaligned_le16(fw_data) != 0x55aa) {
+ dev_err(&dev->dev, "no valid firmware header found.");
+ return -EINVAL;
+ }
+
+ /* verify the firmware version position and print it. */
+ fw_version_pointer = get_unaligned_le16(fw_data + 4);
+ if (fw_version_pointer + 2 >= length) {
+ dev_err(&dev->dev,
+ "firmware version pointer is outside of the firmware image.");
+ return -EINVAL;
+ }
+
+ fw_version = get_unaligned_le16(fw_data + fw_version_pointer);
+ dev_dbg(&dev->dev, "got firmware version: %02x.", fw_version);
+
+ if (fw_version != entry->expected_version) {
+ dev_err(&dev->dev,
+ "firmware version mismatch, expected version: %02x.",
+ entry->expected_version);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int renesas_fw_check_running(struct pci_dev *pdev)
+{
+ int err;
+ u8 fw_state;
+
+ /*
+ * Test if the device is actually needing the firmware. As most
+ * BIOSes will initialize the device for us. If the device is
+ * initialized.
+ */
+ err = pci_read_config_byte(pdev, 0xF4, &fw_state);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ /*
+ * Check if "FW Download Lock" is locked. If it is and the FW is
+ * ready we can simply continue. If the FW is not ready, we have
+ * to give up.
+ */
+ if (fw_state & BIT(1)) {
+ dev_dbg(&pdev->dev, "FW Download Lock is engaged.");
+
+ if (fw_state & BIT(4))
+ return 0;
+
+ dev_err(&pdev->dev,
+ "FW Download Lock is set and FW is not ready. Giving Up.");
+ return -EIO;
+ }
+
+ /*
+ * Check if "FW Download Enable" is set. If someone (us?) tampered
+ * with it and it can't be resetted, we have to give up too... and
+ * ask for a forgiveness and a reboot.
+ */
+ if (fw_state & BIT(0)) {
+ dev_err(&pdev->dev,
+ "FW Download Enable is stale. Giving Up (poweroff/reboot needed).");
+ return -EIO;
+ }
+
+ /* Otherwise, Check the "Result Code" Bits (6:4) and act accordingly */
+ switch ((fw_state & 0x70)) {
+ case 0: /* No result yet */
+ dev_dbg(&pdev->dev, "FW is not ready/loaded yet.");
+
+ /* tell the caller, that this device needs the firmware. */
+ return 1;
+
+ case BIT(4): /* Success, device should be working. */
+ dev_dbg(&pdev->dev, "FW is ready.");
+ return 0;
+
+ case BIT(5): /* Error State */
+ dev_err(&pdev->dev,
+ "hardware is in an error state. Giving up (poweroff/reboot needed).");
+ return -ENODEV;
+
+ default: /* All other states are marked as "Reserved states" */
+ dev_err(&pdev->dev,
+ "hardware is in an invalid state %x. Giving up (poweroff/reboot needed).",
+ (fw_state & 0x70) >> 4);
+ return -EINVAL;
+ }
+}
+
+static int renesas_fw_download(struct pci_dev *pdev,
+ const struct firmware *fw)
+{
+ const u32 *fw_data = (const u32 *)fw->data;
+ size_t i;
+ int err;
+ u8 fw_status;
+
+ /*
+ * For more information and the big picture: please look at the
+ * "Firmware Download Sequence" in "7.1 FW Download Interface"
+ * of R19UH0078EJ0500 Rev.5.00 page 131
+ */
+
+ /*
+ * 0. Set "FW Download Enable" bit in the
+ * "FW Download Control & Status Register" at 0xF4
+ */
+ err = pci_write_config_byte(pdev, 0xF4, BIT(0));
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ /* 1 - 10 follow one step after the other. */
+ for (i = 0; i < fw->size / 4; i++) {
+ err = renesas_fw_download_image(pdev, fw_data, i);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Firmware Download Step %zd failed at position %zd bytes with (%d).",
+ i, i * 4, err);
+ return err;
+ }
+ }
+
+ /*
+ * This sequence continues until the last data is written to
+ * "DATA0" or "DATA1". Naturally, we wait until "SET DATA0/1"
+ * is cleared by the hardware beforehand.
+ */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, 0xF5, &fw_status);
+ if (err)
+ return pcibios_err_to_errno(err);
+ if (!(fw_status & (BIT(0) | BIT(1))))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY)
+ dev_warn(&pdev->dev, "Final Firmware Download step timed out.");
+
+ /*
+ * 11. After finishing writing the last data of FW, the
+ * System Software must clear "FW Download Enable"
+ */
+ err = pci_write_config_byte(pdev, 0xF4, 0);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ /* 12. Read "Result Code" and confirm it is good. */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, 0xF4, &fw_status);
+ if (err)
+ return pcibios_err_to_errno(err);
+ if (fw_status & BIT(4))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ /* Timed out / Error - let's see if we can fix this */
+ err = renesas_fw_check_running(pdev);
+ switch (err) {
+ case 0: /*
+ * we shouldn't end up here.
+ * maybe it took a little bit longer.
+ * But all should be well?
+ */
+ break;
+
+ case 1: /* (No result yet! */
+ return -ETIMEDOUT;
+
+ default:
+ return err;
+ }
+ }
+ /*
+ * Optional last step: Engage Firmware Lock
+ *
+ * err = pci_write_config_byte(pdev, 0xF4, BIT(2));
+ * if (err)
+ * return pcibios_err_to_errno(err);
+ */
+
+ return 0;
+}
+
+struct renesas_fw_ctx {
+ struct pci_dev *pdev;
+ const struct pci_device_id *id;
+ bool resume;
+};
+
+static int xhci_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id);
+
+static void renesas_fw_callback(const struct firmware *fw,
+ void *context)
+{
+ struct renesas_fw_ctx *ctx = context;
+ struct pci_dev *pdev = ctx->pdev;
+ struct device *parent = pdev->dev.parent;
+ int err;
+
+ if (!fw) {
+ dev_err(&pdev->dev, "firmware failed to load\n");
+
+ goto cleanup;
+ }
+
+ err = renesas_fw_verify(pdev, fw->data, fw->size);
+ if (err)
+ goto cleanup;
+
+ err = renesas_fw_download(pdev, fw);
+ release_firmware(fw);
+ if (err) {
+ dev_err(&pdev->dev, "firmware failed to download (%d).", err);
+ goto cleanup;
+ }
+ if (ctx->resume)
+ return;
+
+ err = xhci_pci_probe(pdev, ctx->id);
+ if (!err) {
+ /* everything worked */
+ devm_kfree(&pdev->dev, ctx);
+ return;
+ }
+
+cleanup:
+ /* in case of an error - fall through */
+ dev_info(&pdev->dev, "Unloading driver");
+
+ if (parent)
+ device_lock(parent);
+
+ device_release_driver(&pdev->dev);
+
+ if (parent)
+ device_unlock(parent);
+
+ pci_dev_put(pdev);
+}
+
+static int renesas_fw_alive_check(struct pci_dev *pdev)
+{
+ const struct renesas_fw_entry *entry;
+
+ /* check if we have a eligible RENESAS' uPD720201/2 w/o FW. */
+ entry = renesas_needs_fw_dl(pdev);
+ if (!entry)
+ return 0;
+
+ return renesas_fw_check_running(pdev);
+}
+
+static int renesas_fw_download_to_hw(struct pci_dev *pdev,
+ const struct pci_device_id *id,
+ bool do_resume)
+{
+ const struct renesas_fw_entry *entry;
+ struct renesas_fw_ctx *ctx;
+ int err;
+
+ /* check if we have a eligible RENESAS' uPD720201/2 w/o FW. */
+ entry = renesas_needs_fw_dl(pdev);
+ if (!entry)
+ return 0;
+
+ err = renesas_fw_check_running(pdev);
+ /* Continue ahead, if the firmware is already running. */
+ if (err == 0)
+ return 0;
+
+ if (err != 1)
+ return err;
+
+ ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+ ctx->pdev = pdev;
+ ctx->resume = do_resume;
+ ctx->id = id;
+
+ pci_dev_get(pdev);
+ err = request_firmware_nowait(THIS_MODULE, 1, entry->firmware_name,
+ &pdev->dev, GFP_KERNEL,
+ ctx, renesas_fw_callback);
+ if (err) {
+ pci_dev_put(pdev);
+ return err;
+ }
+
+ /*
+ * The renesas_fw_callback() callback will continue the probe
+ * process, once it aquires the firmware.
+ */
+ return 1;
+}
+
/* called during probe() after chip reset completes */
static int xhci_pci_setup(struct usb_hcd *hcd)
{
@@ -317,6 +749,22 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
struct hc_driver *driver;
struct usb_hcd *hcd;
+ /*
+ * Check if this device is a RENESAS uPD720201/2 device.
+ * Otherwise, we can continue with xhci_pci_probe as usual.
+ */
+ retval = renesas_fw_download_to_hw(dev, id, false);
+ switch (retval) {
+ case 0:
+ break;
+
+ case 1: /* let it load the firmware and recontinue the probe. */
+ return 0;
+
+ default:
+ return retval;
+ };
+
driver = (struct hc_driver *)id->driver_data;
/* Prevent runtime suspending between USB-2 and USB-3 initialization */
@@ -381,6 +829,16 @@ static void xhci_pci_remove(struct pci_dev *dev)
{
struct xhci_hcd *xhci;
+ if (renesas_fw_alive_check(dev)) {
+ /*
+ * bail out early, if this was a renesas device w/o FW.
+ * Else we might hit the NMI watchdog in xhci_handsake
+ * during xhci_reset as part of the driver's unloading.
+ * which we forced in the renesas_fw_callback().
+ */
+ return;
+ }
+
xhci = hcd_to_xhci(pci_get_drvdata(dev));
xhci->xhc_state |= XHCI_STATE_REMOVING;
--
2.20.1
Allow multiple firmware file versions in table and load them in
increasing order as we find them in the file system.
Signed-off-by: Vinod Koul <[email protected]>
Cc: Yoshihiro Shimoda <[email protected]>
Cc: Christian Lamparter <[email protected]>
---
drivers/usb/host/xhci-pci.c | 46 +++++++++++++++++++++++++++++++++++--
1 file changed, 44 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 771948ce3d38..1fb890984d6d 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -336,13 +336,19 @@ static const struct renesas_fw_entry {
* - uPD720201 ES 2.0 sample whose revision ID is 2.
* - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
* - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
+ *
+ * Entry expected_version should be kept in increasing order for a
+ * chip, so that driver will pick first version and if that fails
+ * then next one will be picked
*/
{ "K2013080.mem", 0x0014, 0x02, 0x2013 },
{ "K2013080.mem", 0x0014, 0x03, 0x2013 },
+ { "K2026090.mem", 0x0014, 0x03, 0x2026 },
{ "K2013080.mem", 0x0015, 0x02, 0x2013 },
};
MODULE_FIRMWARE("K2013080.mem");
+MODULE_FIRMWARE("K2026090.mem");
static const struct renesas_fw_entry *renesas_needs_fw_dl(struct pci_dev *dev)
{
@@ -363,6 +369,24 @@ static const struct renesas_fw_entry *renesas_needs_fw_dl(struct pci_dev *dev)
return NULL;
}
+static const struct
+renesas_fw_entry *renesas_get_next_entry(struct pci_dev *dev,
+ const struct renesas_fw_entry *entry)
+{
+ const struct renesas_fw_entry *next_entry;
+ size_t i;
+
+ for (i = 0; i < ARRAY_SIZE(renesas_fw_table); i++) {
+ next_entry = &renesas_fw_table[i];
+ if (next_entry->device == dev->device &&
+ next_entry->revision == dev->revision &&
+ next_entry->expected_version > entry->expected_version)
+ return next_entry;
+ }
+
+ return NULL;
+}
+
static int renesas_fw_download_image(struct pci_dev *dev,
const u32 *fw,
size_t step)
@@ -709,6 +733,7 @@ struct renesas_fw_ctx {
struct pci_dev *pdev;
const struct pci_device_id *id;
bool resume;
+ const struct renesas_fw_entry *entry;
};
static int xhci_pci_probe(struct pci_dev *pdev,
@@ -968,13 +993,29 @@ static void renesas_fw_callback(const struct firmware *fw,
struct renesas_fw_ctx *ctx = context;
struct pci_dev *pdev = ctx->pdev;
struct device *parent = pdev->dev.parent;
+ const struct renesas_fw_entry *next_entry;
bool rom;
int err;
if (!fw) {
dev_err(&pdev->dev, "firmware failed to load\n");
-
- goto cleanup;
+ /*
+ * we didn't find firmware, check if we have another
+ * entry for this device
+ */
+ next_entry = renesas_get_next_entry(ctx->pdev, ctx->entry);
+ if (next_entry) {
+ ctx->entry = next_entry;
+ dev_dbg(&pdev->dev, "Found next entry, requesting: %s\n",
+ next_entry->firmware_name);
+ request_firmware_nowait(THIS_MODULE, 1,
+ next_entry->firmware_name,
+ &pdev->dev, GFP_KERNEL,
+ ctx, renesas_fw_callback);
+ return;
+ } else {
+ goto cleanup;
+ }
}
err = renesas_fw_verify(pdev, fw->data, fw->size);
@@ -1072,6 +1113,7 @@ static int renesas_fw_download_to_hw(struct pci_dev *pdev,
ctx->pdev = pdev;
ctx->resume = do_resume;
ctx->id = id;
+ ctx->entry = entry;
pci_dev_get(pdev);
err = request_firmware_nowait(THIS_MODULE, 1, entry->firmware_name,
--
2.20.1
uPD720201 supports ROM and allows software to program the ROM and boot
from it. Add support for detecting if ROM is present, if so load the ROM
if not programmed earlier.
Signed-off-by: Vinod Koul <[email protected]>
Cc: Yoshihiro Shimoda <[email protected]>
Cc: Christian Lamparter <[email protected]>
---
drivers/usb/host/xhci-pci.c | 357 ++++++++++++++++++++++++++++++++++++
1 file changed, 357 insertions(+)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index d9081fe7ed6c..771948ce3d38 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -78,6 +78,20 @@
#define RENESAS_FW_STATUS_SET_DATA0 BIT(8)
#define RENESAS_FW_STATUS_SET_DATA1 BIT(9)
+#define RENESAS_ROM_STATUS_ACCESS BIT(0)
+#define RENESAS_ROM_STATUS_ERASE BIT(1)
+#define RENESAS_ROM_STATUS_RELOAD BIT(2)
+#define RENESAS_ROM_STATUS_RESULT GENMASK(6, 4)
+ #define RENESAS_ROM_STATUS_INVALID 0
+ #define RENESAS_ROM_STATUS_SUCCESS BIT(4)
+ #define RENESAS_ROM_STATUS_ERROR BIT(5)
+#define RENESAS_ROM_STATUS_SET_DATA0 BIT(8)
+#define RENESAS_ROM_STATUS_SET_DATA1 BIT(9)
+#define RENESAS_ROM_STATUS_ROM_EXISTS BIT(15)
+
+#define RENESAS_ROM_ERASE_MAGIC 0x5A65726F
+#define RENESAS_ROM_WRITE_MAGIC 0x53524F4D
+
#define RENESAS_RETRY 1000
#define RENESAS_DELAY 10
@@ -458,11 +472,79 @@ static int renesas_fw_verify(struct pci_dev *dev,
return 0;
}
+static int renesas_check_rom_state(struct pci_dev *pdev)
+{
+ const struct renesas_fw_entry *entry;
+ u16 rom_state;
+ u32 version;
+ bool valid_version = false;
+ int err, i;
+
+ /* check FW version */
+ err = pci_read_config_dword(pdev, RENESAS_FW_VERSION, &version);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ version &= RENESAS_FW_VERSION_FIELD;
+ version = version >> RENESAS_FW_VERSION_OFFSET;
+ dev_dbg(&pdev->dev, "Found FW version loaded is %x\n", version);
+
+ /* treat version in renesas_fw_table as correct ones */
+ for (i = 0; i < ARRAY_SIZE(renesas_fw_table); i++) {
+ entry = &renesas_fw_table[i];
+ if (version == entry->expected_version) {
+ dev_dbg(&pdev->dev, "Detected valid ROM version..\n");
+ valid_version = true;
+ }
+ }
+
+ /*
+ * Test if ROM is present and loaded, if so we can skip everything
+ */
+ err = pci_read_config_word(pdev, RENESAS_ROM_STATUS, &rom_state);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ if (rom_state & BIT(15)) {
+ /* ROM exists */
+ dev_dbg(&pdev->dev, "ROM exists\n");
+
+ /* Check the "Result Code" Bits (6:4) and act accordingly */
+ switch (rom_state & RENESAS_ROM_STATUS_RESULT) {
+ case RENESAS_ROM_STATUS_SUCCESS:
+ dev_dbg(&pdev->dev, "Success ROM load...");
+ /* we have valid version and status so success */
+ if (valid_version)
+ return 0;
+ break;
+
+ case RENESAS_ROM_STATUS_INVALID: /* No result yet */
+ dev_dbg(&pdev->dev, "No result as it is ROM...");
+ /* we have valid version and status so success */
+ if (valid_version)
+ return 0;
+ break;
+
+ case RENESAS_ROM_STATUS_ERROR: /* Error State */
+ default: /* All other states are marked as "Reserved states" */
+ dev_err(&pdev->dev, "Invalid ROM..");
+ break;
+ }
+ }
+
+ return -EIO;
+}
+
static int renesas_fw_check_running(struct pci_dev *pdev)
{
int err;
u8 fw_state;
+ /* Check if device has ROM and loaded, if so skip everything */
+ err = renesas_check_rom_state(pdev);
+ if (!err)
+ return err;
+
/*
* Test if the device is actually needing the firmware. As most
* BIOSes will initialize the device for us. If the device is
@@ -632,12 +714,261 @@ struct renesas_fw_ctx {
static int xhci_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id);
+static bool renesas_check_rom(struct pci_dev *pdev)
+{
+ u16 rom_status;
+ int retval;
+
+ /* 1. Check if external ROM exists */
+ retval = pci_read_config_word(pdev, RENESAS_ROM_STATUS, &rom_status);
+ if (retval)
+ return false;
+
+ rom_status &= RENESAS_ROM_STATUS_ROM_EXISTS;
+ if (rom_status) {
+ dev_dbg(&pdev->dev, "External ROM exists\n");
+ return true; /* External ROM exists */
+ }
+
+ return false;
+}
+
+static void renesas_rom_erase(struct pci_dev *pdev)
+{
+ int retval, i;
+ u8 status;
+
+ dev_dbg(&pdev->dev, "Performing ROM Erase...\n");
+ retval = pci_write_config_dword(pdev, RENESAS_DATA0,
+ RENESAS_ROM_ERASE_MAGIC);
+ if (retval) {
+ dev_err(&pdev->dev, "ROM erase, magic word write failed: %d\n",
+ pcibios_err_to_errno(retval));
+ return;
+ }
+
+ retval = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (retval) {
+ dev_err(&pdev->dev, "ROM status read failed: %d\n",
+ pcibios_err_to_errno(retval));
+ return;
+ }
+ status |= RENESAS_ROM_STATUS_ERASE;
+ retval = pci_write_config_byte(pdev, RENESAS_ROM_STATUS, status);
+ if (retval) {
+ dev_err(&pdev->dev, "ROM erase set word write failed\n");
+ return;
+ }
+
+ /* sleep a bit while ROM is erased */
+ msleep(20);
+
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ retval = pci_read_config_byte(pdev, RENESAS_ROM_STATUS,
+ &status);
+ status &= RENESAS_ROM_STATUS_ERASE;
+ if (!status)
+ break;
+
+ mdelay(RENESAS_DELAY);
+ }
+
+ if (i == RENESAS_RETRY)
+ dev_dbg(&pdev->dev, "Chip erase timedout: %x\n", status);
+
+ dev_dbg(&pdev->dev, "ROM Erase... Done success\n");
+}
+
+static bool renesas_download_rom(struct pci_dev *pdev,
+ const u32 *fw, size_t step)
+{
+ bool data0_or_data1;
+ u8 fw_status;
+ size_t i;
+ int err;
+
+ /*
+ * The hardware does alternate between two 32-bit pages.
+ * (This is because each row of the firmware is 8 bytes).
+ *
+ * for even steps we use DATA0, for odd steps DATA1.
+ */
+ data0_or_data1 = (step & 1) == 1;
+
+ /* Read "Set DATAX" and confirm it is cleared. */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS_MSB,
+ &fw_status);
+ if (err) {
+ dev_err(&pdev->dev, "Read ROM Status failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+ if (!(fw_status & BIT(data0_or_data1)))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ dev_err(&pdev->dev, "Timeout for Set DATAX step: %zd\n", step);
+ return false;
+ }
+
+ /*
+ * Write FW data to "DATAX".
+ * "LSB is left" => force little endian
+ */
+ err = pci_write_config_dword(pdev, data0_or_data1 ?
+ RENESAS_DATA1 : RENESAS_DATA0,
+ (__force u32)cpu_to_le32(fw[step]));
+ if (err) {
+ dev_err(&pdev->dev, "Write to DATAX failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+
+ udelay(100);
+
+ /* Set "Set DATAX". */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS_MSB,
+ BIT(data0_or_data1));
+ if (err) {
+ dev_err(&pdev->dev, "Write config for DATAX failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+
+ return true;
+}
+
+static bool renesas_setup_rom(struct pci_dev *pdev, const struct firmware *fw)
+{
+ const u32 *fw_data = (const u32 *)fw->data;
+ int err, i;
+ u8 status;
+
+ /* 2. Write magic word to Data0 */
+ err = pci_write_config_dword(pdev, RENESAS_DATA0,
+ RENESAS_ROM_WRITE_MAGIC);
+ if (err)
+ return false;
+
+ /* 3. Set External ROM access */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS,
+ RENESAS_ROM_STATUS_ACCESS);
+ if (err)
+ goto remove_bypass;
+
+ /* 4. Check the result */
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (err)
+ goto remove_bypass;
+ status &= GENMASK(6, 4);
+ if (status) {
+ dev_err(&pdev->dev,
+ "setting external rom failed: %x\n", status);
+ goto remove_bypass;
+ }
+
+ /* 5 to 16 Write FW to DATA0/1 while checking SetData0/1 */
+ for (i = 0; i < fw->size / 4; i++) {
+ err = renesas_download_rom(pdev, fw_data, i);
+ if (!err) {
+ dev_err(&pdev->dev,
+ "ROM Download Step %d failed at position %d bytes\n",
+ i, i * 4);
+ goto remove_bypass;
+ }
+ }
+
+ /*
+ * wait till DATA0/1 is cleared
+ */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS_MSB,
+ &status);
+ if (err)
+ goto remove_bypass;
+ if (!(status & (BIT(0) | BIT(1))))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ dev_err(&pdev->dev, "Final Firmware ROM Download step timed out\n");
+ goto remove_bypass;
+ }
+
+ /* 17. Remove bypass */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS, 0);
+ if (err)
+ return false;
+
+ udelay(10);
+
+ /* 18. check result */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (err) {
+ dev_err(&pdev->dev, "Read ROM status failed:%d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+ status &= RENESAS_ROM_STATUS_RESULT;
+ if (status == RENESAS_ROM_STATUS_SUCCESS) {
+ dev_dbg(&pdev->dev, "Download ROM success\n");
+ break;
+ }
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) { /* Timed out */
+ dev_err(&pdev->dev,
+ "Download to external ROM TO: %x\n", status);
+ return false;
+ }
+
+ dev_dbg(&pdev->dev, "Download to external ROM scuceeded\n");
+
+ /* Last step set Reload */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS,
+ RENESAS_ROM_STATUS_RELOAD);
+ if (err) {
+ dev_err(&pdev->dev, "Set ROM execute failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+
+ /*
+ * wait till Reload is cleared
+ */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (err)
+ return false;
+ if (!(status & RENESAS_ROM_STATUS_RELOAD))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ dev_err(&pdev->dev, "ROM Exec timed out: %x\n", status);
+ return false;
+ }
+
+ return true;
+
+remove_bypass:
+ pci_write_config_byte(pdev, RENESAS_ROM_STATUS, 0);
+ return false;
+}
+
static void renesas_fw_callback(const struct firmware *fw,
void *context)
{
struct renesas_fw_ctx *ctx = context;
struct pci_dev *pdev = ctx->pdev;
struct device *parent = pdev->dev.parent;
+ bool rom;
int err;
if (!fw) {
@@ -650,12 +981,33 @@ static void renesas_fw_callback(const struct firmware *fw,
if (err)
goto cleanup;
+ /* Check if the device has external ROM */
+ rom = renesas_check_rom(pdev);
+ if (rom) {
+ /* perfrom chip erase first */
+ renesas_rom_erase(pdev);
+
+ /* lets try loading fw on ROM first */
+ rom = renesas_setup_rom(pdev, fw);
+ if (!rom) {
+ dev_err(&pdev->dev,
+ "ROM load failed, falling back on FW load\n");
+ } else {
+ dev_dbg(&pdev->dev, "ROM load done..\n");
+
+ release_firmware(fw);
+ goto do_probe;
+ }
+ }
+
err = renesas_fw_download(pdev, fw);
release_firmware(fw);
if (err) {
dev_err(&pdev->dev, "firmware failed to download (%d).", err);
goto cleanup;
}
+
+do_probe:
if (ctx->resume)
return;
@@ -757,6 +1109,11 @@ static int renesas_check_if_fw_dl_is_needed(struct pci_dev *pdev)
(pdev->revision == 0x02 || pdev->revision == 0x03)))))
return 0;
+ /* Check if device has ROM and loaded, if so skip everything */
+ err = renesas_check_rom_state(pdev);
+ if (!err)
+ return err;
+
/*
* Test if the firmware was uploaded and is running.
* As most BIOSes will initialize the device for us.
--
2.20.1
From: Christian Lamparter <[email protected]>
This patch adds a firmware check for the uPD720201K8-711-BAC-A
and uPD720202K8-711-BAA-A variant. Both of these chips are listed
in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
devices which need a firmware in order to work as they do not have
support to load the firmware from an external ROM.
Currently, the xhci-pci driver is unable to initialize the hcd in
this case. Instead it will wait for 30 seconds and cause a timeout
in xhci_handshake() and fails.
[ 5.116990] xhci_hcd 0000:45:00.0: new USB bus registered ...
[ 32.335215] xhci_hcd 0000:45:00.0: can't setup: -110
[ 32.340179] xhci_hcd 0000:45:00.0: USB bus 2 deregistered
[ 32.345587] xhci_hcd 0000:45:00.0: init 0000:45:00.0 fail, -110
[ 32.351496] xhci_hcd: probe of 0000:45:00.0 failed with error -110
Cc: Yoshihiro Shimoda <[email protected]>
Signed-off-by: Christian Lamparter <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
---
drivers/usb/host/xhci-pci.c | 59 +++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 724d0f567d98..65de5e961892 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -711,6 +711,55 @@ static int renesas_fw_download_to_hw(struct pci_dev *pdev,
return 1;
}
+static int renesas_check_if_fw_dl_is_needed(struct pci_dev *pdev)
+{
+ int err;
+ u8 fw_state;
+
+ /*
+ * Only the uPD720201K8-711-BAC-A or uPD720202K8-711-BAA-A
+ * are listed in R19UH0078EJ0500 Rev.5.00 as devices which
+ * need a firmware in order to work.
+ *
+ * - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
+ * - uPD720201 ES 2.0 sample whose revision ID is 2.
+ * - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
+ */
+ if (!((pdev->vendor == PCI_VENDOR_ID_RENESAS) &&
+ ((pdev->device == 0x0015 && pdev->revision == 0x02) ||
+ (pdev->device == 0x0014 &&
+ (pdev->revision == 0x02 || pdev->revision == 0x03)))))
+ return 0;
+
+ /*
+ * Test if the firmware was uploaded and is running.
+ * As most BIOSes will initialize the device for us.
+ */
+ err = pci_read_config_byte(pdev, 0xf4, &fw_state);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ /* Check the "Result Code" Bits (6:4) and act accordingly */
+ switch (fw_state & 0x70) {
+ case 0: /* No result yet */
+ dev_err(&pdev->dev, "FW is not ready/loaded yet.");
+ return -ENODEV;
+
+ case BIT(4): /* Success, device should be working. */
+ dev_dbg(&pdev->dev, "FW is ready.");
+ return 0;
+
+ case BIT(5): /* Error State */
+ dev_err(&pdev->dev, "HW is in an error state.");
+ return -ENODEV;
+
+ default: /* All other states are marked as "Reserved states" */
+ dev_err(&pdev->dev, "HW is in an invalid state (%x).",
+ (fw_state & 0x70) >> 4);
+ return -EINVAL;
+ }
+}
+
/* called during probe() after chip reset completes */
static int xhci_pci_setup(struct usb_hcd *hcd)
{
@@ -765,6 +814,11 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
return retval;
};
+ /* Check if this device is a RENESAS uPD720201/2 device. */
+ retval = renesas_check_if_fw_dl_is_needed(dev);
+ if (retval)
+ return retval;
+
driver = (struct hc_driver *)id->driver_data;
/* Prevent runtime suspending between USB-2 and USB-3 initialization */
@@ -966,6 +1020,11 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
if (pdev->vendor == PCI_VENDOR_ID_INTEL)
usb_enable_intel_xhci_ports(pdev);
+ /* Check if this device is a RENESAS uPD720201/2 device. */
+ retval = renesas_check_if_fw_dl_is_needed(pdev);
+ if (retval)
+ return retval;
+
if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
xhci_ssic_port_unused_quirk(hcd, false);
--
2.20.1
Instead of using register values and fields lets define them and
use in the driver.
Signed-off-by: Vinod Koul <[email protected]>
Cc: Yoshihiro Shimoda <[email protected]>
Cc: Christian Lamparter <[email protected]>
---
drivers/usb/host/xhci-pci.c | 68 +++++++++++++++++++++++++------------
1 file changed, 47 insertions(+), 21 deletions(-)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 65de5e961892..d9081fe7ed6c 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -57,6 +57,27 @@
#define PCI_DEVICE_ID_AMD_PROMONTORYA_1 0x43bc
#define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI 0x1142
+#define RENESAS_FW_VERSION 0x6C
+#define RENESAS_ROM_CONFIG 0xF0
+#define RENESAS_FW_STATUS 0xF4
+#define RENESAS_FW_STATUS_MSB 0xF5
+#define RENESAS_ROM_STATUS 0xF6
+#define RENESAS_ROM_STATUS_MSB 0xF7
+#define RENESAS_DATA0 0xF8
+#define RENESAS_DATA1 0xFC
+
+#define RENESAS_FW_VERSION_FIELD GENMASK(23, 7)
+#define RENESAS_FW_VERSION_OFFSET 8
+
+#define RENESAS_FW_STATUS_DOWNLOAD_ENABLE BIT(0)
+#define RENESAS_FW_STATUS_LOCK BIT(1)
+#define RENESAS_FW_STATUS_RESULT GENMASK(6, 4)
+ #define RENESAS_FW_STATUS_INVALID 0
+ #define RENESAS_FW_STATUS_SUCCESS BIT(4)
+ #define RENESAS_FW_STATUS_ERROR BIT(5)
+#define RENESAS_FW_STATUS_SET_DATA0 BIT(8)
+#define RENESAS_FW_STATUS_SET_DATA1 BIT(9)
+
#define RENESAS_RETRY 1000
#define RENESAS_DELAY 10
@@ -347,7 +368,8 @@ static int renesas_fw_download_image(struct pci_dev *dev,
/* step+1. Read "Set DATAX" and confirm it is cleared. */
for (i = 0; i < RENESAS_RETRY; i++) {
- err = pci_read_config_byte(dev, 0xF5, &fw_status);
+ err = pci_read_config_byte(dev, RENESAS_FW_STATUS_MSB,
+ &fw_status);
if (err)
return pcibios_err_to_errno(err);
if (!(fw_status & BIT(data0_or_data1)))
@@ -362,7 +384,8 @@ static int renesas_fw_download_image(struct pci_dev *dev,
* step+2. Write FW data to "DATAX".
* "LSB is left" => force little endian
*/
- err = pci_write_config_dword(dev, data0_or_data1 ? 0xFC : 0xF8,
+ err = pci_write_config_dword(dev, data0_or_data1 ?
+ RENESAS_DATA1 : RENESAS_DATA0,
(__force u32)cpu_to_le32(fw[step]));
if (err)
return pcibios_err_to_errno(err);
@@ -370,7 +393,8 @@ static int renesas_fw_download_image(struct pci_dev *dev,
udelay(100);
/* step+3. Set "Set DATAX". */
- err = pci_write_config_byte(dev, 0xF5, BIT(data0_or_data1));
+ err = pci_write_config_byte(dev, RENESAS_FW_STATUS_MSB,
+ BIT(data0_or_data1));
if (err)
return pcibios_err_to_errno(err);
@@ -444,7 +468,7 @@ static int renesas_fw_check_running(struct pci_dev *pdev)
* BIOSes will initialize the device for us. If the device is
* initialized.
*/
- err = pci_read_config_byte(pdev, 0xF4, &fw_state);
+ err = pci_read_config_byte(pdev, RENESAS_FW_STATUS, &fw_state);
if (err)
return pcibios_err_to_errno(err);
@@ -453,10 +477,10 @@ static int renesas_fw_check_running(struct pci_dev *pdev)
* ready we can simply continue. If the FW is not ready, we have
* to give up.
*/
- if (fw_state & BIT(1)) {
+ if (fw_state & RENESAS_FW_STATUS_LOCK) {
dev_dbg(&pdev->dev, "FW Download Lock is engaged.");
- if (fw_state & BIT(4))
+ if (fw_state & RENESAS_FW_STATUS_SUCCESS)
return 0;
dev_err(&pdev->dev,
@@ -469,33 +493,33 @@ static int renesas_fw_check_running(struct pci_dev *pdev)
* with it and it can't be resetted, we have to give up too... and
* ask for a forgiveness and a reboot.
*/
- if (fw_state & BIT(0)) {
+ if (fw_state & RENESAS_FW_STATUS_DOWNLOAD_ENABLE) {
dev_err(&pdev->dev,
"FW Download Enable is stale. Giving Up (poweroff/reboot needed).");
return -EIO;
}
/* Otherwise, Check the "Result Code" Bits (6:4) and act accordingly */
- switch ((fw_state & 0x70)) {
+ switch (fw_state & RENESAS_FW_STATUS_RESULT) {
case 0: /* No result yet */
dev_dbg(&pdev->dev, "FW is not ready/loaded yet.");
/* tell the caller, that this device needs the firmware. */
return 1;
- case BIT(4): /* Success, device should be working. */
+ case RENESAS_FW_STATUS_SUCCESS: /* Success, device should be working. */
dev_dbg(&pdev->dev, "FW is ready.");
return 0;
- case BIT(5): /* Error State */
+ case RENESAS_FW_STATUS_ERROR: /* Error State */
dev_err(&pdev->dev,
"hardware is in an error state. Giving up (poweroff/reboot needed).");
return -ENODEV;
default: /* All other states are marked as "Reserved states" */
dev_err(&pdev->dev,
- "hardware is in an invalid state %x. Giving up (poweroff/reboot needed).",
- (fw_state & 0x70) >> 4);
+ "hardware is in an invalid state %lx. Giving up (poweroff/reboot needed).",
+ (fw_state & RENESAS_FW_STATUS_RESULT) >> 4);
return -EINVAL;
}
}
@@ -518,7 +542,8 @@ static int renesas_fw_download(struct pci_dev *pdev,
* 0. Set "FW Download Enable" bit in the
* "FW Download Control & Status Register" at 0xF4
*/
- err = pci_write_config_byte(pdev, 0xF4, BIT(0));
+ err = pci_write_config_byte(pdev, RENESAS_FW_STATUS,
+ RENESAS_FW_STATUS_DOWNLOAD_ENABLE);
if (err)
return pcibios_err_to_errno(err);
@@ -539,7 +564,8 @@ static int renesas_fw_download(struct pci_dev *pdev,
* is cleared by the hardware beforehand.
*/
for (i = 0; i < RENESAS_RETRY; i++) {
- err = pci_read_config_byte(pdev, 0xF5, &fw_status);
+ err = pci_read_config_byte(pdev, RENESAS_FW_STATUS_MSB,
+ &fw_status);
if (err)
return pcibios_err_to_errno(err);
if (!(fw_status & (BIT(0) | BIT(1))))
@@ -554,16 +580,16 @@ static int renesas_fw_download(struct pci_dev *pdev,
* 11. After finishing writing the last data of FW, the
* System Software must clear "FW Download Enable"
*/
- err = pci_write_config_byte(pdev, 0xF4, 0);
+ err = pci_write_config_byte(pdev, RENESAS_FW_STATUS, 0);
if (err)
return pcibios_err_to_errno(err);
/* 12. Read "Result Code" and confirm it is good. */
for (i = 0; i < RENESAS_RETRY; i++) {
- err = pci_read_config_byte(pdev, 0xF4, &fw_status);
+ err = pci_read_config_byte(pdev, RENESAS_FW_STATUS, &fw_status);
if (err)
return pcibios_err_to_errno(err);
- if (fw_status & BIT(4))
+ if (fw_status & RENESAS_FW_STATUS_SUCCESS)
break;
udelay(RENESAS_DELAY);
@@ -735,21 +761,21 @@ static int renesas_check_if_fw_dl_is_needed(struct pci_dev *pdev)
* Test if the firmware was uploaded and is running.
* As most BIOSes will initialize the device for us.
*/
- err = pci_read_config_byte(pdev, 0xf4, &fw_state);
+ err = pci_read_config_byte(pdev, RENESAS_FW_STATUS, &fw_state);
if (err)
return pcibios_err_to_errno(err);
/* Check the "Result Code" Bits (6:4) and act accordingly */
- switch (fw_state & 0x70) {
+ switch (fw_state & RENESAS_FW_STATUS_RESULT) {
case 0: /* No result yet */
dev_err(&pdev->dev, "FW is not ready/loaded yet.");
return -ENODEV;
- case BIT(4): /* Success, device should be working. */
+ case RENESAS_FW_STATUS_SUCCESS:
dev_dbg(&pdev->dev, "FW is ready.");
return 0;
- case BIT(5): /* Error State */
+ case RENESAS_FW_STATUS_ERROR:
dev_err(&pdev->dev, "HW is in an error state.");
return -ENODEV;
--
2.20.1
On Friday, June 21, 2019 10:59:08 AM CEST Vinod Koul wrote:
> This series add support for Renesas USB controllers uPD720201 and uPD720202.
> These require firmware to be loaded and in case devices have ROM those can
> also be programmed if empty. If ROM is programmed, it runs from ROM as well.
>
> This includes two patches from Christian which supported these controllers
> w/o ROM and later my patches for ROM support and multiple firmware versions.
>
> Changes in v2:
> used macros for timeout count and delay
> removed renesas_fw_alive_check
> cleaned renesas_fw_callback
> removed recurion for renesas_fw_download
> added MODULE_FIRMWARE
> added comment for multiple fw order
>
> Christian Lamparter (2):
> usb: xhci: add firmware loader for uPD720201 and uPD720202 w/o ROM
> usb: xhci: handle uPD720201 and uPD720202 w/o ROM
>
> Vinod Koul (3):
> usb: xhci: Use register defined and field names
> usb: xhci: Add ROM loader for uPD720201
> usb: xhci: allow multiple firmware versions
>
> drivers/usb/host/xhci-pci.c | 942 ++++++++++++++++++++++++++++++++++++
> 1 file changed, 942 insertions(+)
>
bootlog from a Netgear WNDR4700 with a 32GiB USB3 Stick attached to the
Renesas uPD720202K8-711-BAA-A chip.
[ 13.523094] xhci_hcd 0000:45:00.0: firmware size is not a multiple of 8.
[ 13.868071] xhci_hcd 0000:45:00.0: xHCI Host Controller
[ 13.873325] xhci_hcd 0000:45:00.0: new USB bus registered, assigned bus number 2
[ 13.886296] xhci_hcd 0000:45:00.0: hcc params 0x014051cf hci version 0x100 quirks 0x0000000101000090
[ 13.902719] usbcore: registered new interface driver usb-storage
[ 13.909277] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 13.917336] hub 2-0:1.0: USB hub found
[ 13.921432] init: - preinit -
[ 13.930356] hub 2-0:1.0: 2 ports detected
[ 13.942869] xhci_hcd 0000:45:00.0: xHCI Host Controller
[ 13.948122] xhci_hcd 0000:45:00.0: new USB bus registered, assigned bus number 3
[ 13.955514] xhci_hcd 0000:45:00.0: Host supports USB 3.0 SuperSpeed
[ 13.981227] usb usb3: We don't know the algorithms for LPM for this host, disabling LPM.
[ 13.997141] hub 3-0:1.0: USB hub found
[ 14.004375] hub 3-0:1.0: 2 ports detected
[ 14.375644] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 14.382247] scsi host1: usb-storage 1-1:1.0
[ 14.438959] usb 3-2: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 14.467746] usb-storage 3-2:1.0: USB Mass Storage device detected
[ 14.474241] scsi host2: usb-storage 3-2:1.0
[ 15.394562] scsi 1:0:0:0: Direct-Access Generic STORAGE DEVICE 9454 PQ: 0 ANSI: 0
[ 15.405183] sd 1:0:0:0: [sda] Attached SCSI removable disk
[ 15.522448] scsi 2:0:0:0: Direct-Access SanDisk Ultra 1.00 PQ: 0 ANSI: 6
[ 15.531952] sd 2:0:0:0: [sdb] 60063744 512-byte logical blocks: (30.8 GB/28.6 GiB)
[ 15.541007] sd 2:0:0:0: [sdb] Write Protect is off
[ 15.546808] sd 2:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 15.574567] sdb: sdb1
[ 15.580581] sd 2:0:0:0: [sdb] Attached SCSI removable disk
This is working.
Tested-by: Christian Lamparter <[email protected]>
On Friday, June 21, 2019 10:59:13 AM CEST Vinod Koul wrote:
> Allow multiple firmware file versions in table and load them in
> increasing order as we find them in the file system.
>
> Signed-off-by: Vinod Koul <[email protected]>
> Cc: Yoshihiro Shimoda <[email protected]>
> Cc: Christian Lamparter <[email protected]>
> ---
> drivers/usb/host/xhci-pci.c | 46 +++++++++++++++++++++++++++++++++++--
> 1 file changed, 44 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
> index 771948ce3d38..1fb890984d6d 100644
> --- a/drivers/usb/host/xhci-pci.c
> +++ b/drivers/usb/host/xhci-pci.c
> @@ -336,13 +336,19 @@ static const struct renesas_fw_entry {
> * - uPD720201 ES 2.0 sample whose revision ID is 2.
> * - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
> * - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
> + *
> + * Entry expected_version should be kept in increasing order for a
> + * chip, so that driver will pick first version and if that fails
> + * then next one will be picked
Wouldn't it be better to do that in reverse order and try the latest
firmware first? And then fall back to the older ones?
> */
> { "K2013080.mem", 0x0014, 0x02, 0x2013 },
> { "K2013080.mem", 0x0014, 0x03, 0x2013 },
> + { "K2026090.mem", 0x0014, 0x03, 0x2026 },
> { "K2013080.mem", 0x0015, 0x02, 0x2013 },
The uPD720202 (ProductID 0x0015 with rev 0x02) also
works with the K2026090.mem I found online.
so,
+ { "K2026090.mem", 0x0015, 0x02, 0x2026 },
> };
>
> MODULE_FIRMWARE("K2013080.mem");
> +MODULE_FIRMWARE("K2026090.mem");
>
> static const struct renesas_fw_entry *renesas_needs_fw_dl(struct pci_dev *dev)
> {
> @@ -363,6 +369,24 @@ static const struct renesas_fw_entry *renesas_needs_fw_dl(struct pci_dev *dev)
> return NULL;
> }
>
> +static const struct
> +renesas_fw_entry *renesas_get_next_entry(struct pci_dev *dev,
> + const struct renesas_fw_entry *entry)
> +{
> + const struct renesas_fw_entry *next_entry;
> + size_t i;
> +
> + for (i = 0; i < ARRAY_SIZE(renesas_fw_table); i++) {
> + next_entry = &renesas_fw_table[i];
> + if (next_entry->device == dev->device &&
> + next_entry->revision == dev->revision &&
> + next_entry->expected_version > entry->expected_version)
> + return next_entry;
> + }
> +
> + return NULL;
> +}
> +
> static int renesas_fw_download_image(struct pci_dev *dev,
> const u32 *fw,
> size_t step)
> @@ -709,6 +733,7 @@ struct renesas_fw_ctx {
> struct pci_dev *pdev;
> const struct pci_device_id *id;
> bool resume;
> + const struct renesas_fw_entry *entry;
> };
>
> static int xhci_pci_probe(struct pci_dev *pdev,
> @@ -968,13 +993,29 @@ static void renesas_fw_callback(const struct firmware *fw,
> struct renesas_fw_ctx *ctx = context;
> struct pci_dev *pdev = ctx->pdev;
> struct device *parent = pdev->dev.parent;
> + const struct renesas_fw_entry *next_entry;
> bool rom;
> int err;
>
> if (!fw) {
> dev_err(&pdev->dev, "firmware failed to load\n");
> -
> - goto cleanup;
> + /*
> + * we didn't find firmware, check if we have another
> + * entry for this device
> + */
> + next_entry = renesas_get_next_entry(ctx->pdev, ctx->entry);
> + if (next_entry) {
> + ctx->entry = next_entry;
> + dev_dbg(&pdev->dev, "Found next entry, requesting: %s\n",
> + next_entry->firmware_name);
> + request_firmware_nowait(THIS_MODULE, 1,
> + next_entry->firmware_name,
> + &pdev->dev, GFP_KERNEL,
> + ctx, renesas_fw_callback);
> + return;
> + } else {
> + goto cleanup;
> + }
> }
>
> err = renesas_fw_verify(pdev, fw->data, fw->size);
> @@ -1072,6 +1113,7 @@ static int renesas_fw_download_to_hw(struct pci_dev *pdev,
> ctx->pdev = pdev;
> ctx->resume = do_resume;
> ctx->id = id;
> + ctx->entry = entry;
>
> pci_dev_get(pdev);
> err = request_firmware_nowait(THIS_MODULE, 1, entry->firmware_name,
>
On Friday, June 21, 2019 10:59:10 AM CEST Vinod Koul wrote:
> From: Christian Lamparter <[email protected]>
>
> This patch adds a firmware check for the uPD720201K8-711-BAC-A
> and uPD720202K8-711-BAA-A variant. Both of these chips are listed
> in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
> devices which need a firmware in order to work as they do not have
> support to load the firmware from an external ROM.
>
> Currently, the xhci-pci driver is unable to initialize the hcd in
> this case. Instead it will wait for 30 seconds and cause a timeout
> in xhci_handshake() and fails.
>
> [ 5.116990] xhci_hcd 0000:45:00.0: new USB bus registered ...
> [ 32.335215] xhci_hcd 0000:45:00.0: can't setup: -110
> [ 32.340179] xhci_hcd 0000:45:00.0: USB bus 2 deregistered
> [ 32.345587] xhci_hcd 0000:45:00.0: init 0000:45:00.0 fail, -110
> [ 32.351496] xhci_hcd: probe of 0000:45:00.0 failed with error -110
>
> Cc: Yoshihiro Shimoda <[email protected]>
> Signed-off-by: Christian Lamparter <[email protected]>
> Signed-off-by: Bjorn Andersson <[email protected]>
> Signed-off-by: Vinod Koul <[email protected]>
From what I remember, this was the "backup" patch that just prevented
a stuck device (since the xhci-pci would trigger the watchdog on the
powerpc APM82181). I posted because it because I didn't get any reply
from Greg or Felipe. This patch should be skipable since patch 1/5 adds
the full loader.
> ---
> drivers/usb/host/xhci-pci.c | 59 +++++++++++++++++++++++++++++++++++++
> 1 file changed, 59 insertions(+)
>
> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
> index 724d0f567d98..65de5e961892 100644
> --- a/drivers/usb/host/xhci-pci.c
> +++ b/drivers/usb/host/xhci-pci.c
> @@ -711,6 +711,55 @@ static int renesas_fw_download_to_hw(struct pci_dev *pdev,
> return 1;
> }
>
> +static int renesas_check_if_fw_dl_is_needed(struct pci_dev *pdev)
> +{
> + int err;
> + u8 fw_state;
> +
> + /*
> + * Only the uPD720201K8-711-BAC-A or uPD720202K8-711-BAA-A
> + * are listed in R19UH0078EJ0500 Rev.5.00 as devices which
> + * need a firmware in order to work.
> + *
> + * - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
> + * - uPD720201 ES 2.0 sample whose revision ID is 2.
> + * - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
> + */
> + if (!((pdev->vendor == PCI_VENDOR_ID_RENESAS) &&
> + ((pdev->device == 0x0015 && pdev->revision == 0x02) ||
> + (pdev->device == 0x0014 &&
> + (pdev->revision == 0x02 || pdev->revision == 0x03)))))
> + return 0;
> +
> + /*
> + * Test if the firmware was uploaded and is running.
> + * As most BIOSes will initialize the device for us.
> + */
> + err = pci_read_config_byte(pdev, 0xf4, &fw_state);
> + if (err)
> + return pcibios_err_to_errno(err);
> +
> + /* Check the "Result Code" Bits (6:4) and act accordingly */
> + switch (fw_state & 0x70) {
> + case 0: /* No result yet */
> + dev_err(&pdev->dev, "FW is not ready/loaded yet.");
> + return -ENODEV;
> +
> + case BIT(4): /* Success, device should be working. */
> + dev_dbg(&pdev->dev, "FW is ready.");
> + return 0;
> +
> + case BIT(5): /* Error State */
> + dev_err(&pdev->dev, "HW is in an error state.");
> + return -ENODEV;
> +
> + default: /* All other states are marked as "Reserved states" */
> + dev_err(&pdev->dev, "HW is in an invalid state (%x).",
> + (fw_state & 0x70) >> 4);
> + return -EINVAL;
> + }
> +}
> +
> /* called during probe() after chip reset completes */
> static int xhci_pci_setup(struct usb_hcd *hcd)
> {
> @@ -765,6 +814,11 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
> return retval;
> };
>
> + /* Check if this device is a RENESAS uPD720201/2 device. */
> + retval = renesas_check_if_fw_dl_is_needed(dev);
> + if (retval)
> + return retval;
> +
> driver = (struct hc_driver *)id->driver_data;
>
> /* Prevent runtime suspending between USB-2 and USB-3 initialization */
> @@ -966,6 +1020,11 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
> if (pdev->vendor == PCI_VENDOR_ID_INTEL)
> usb_enable_intel_xhci_ports(pdev);
>
> + /* Check if this device is a RENESAS uPD720201/2 device. */
> + retval = renesas_check_if_fw_dl_is_needed(pdev);
> + if (retval)
> + return retval;
> +
> if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
> xhci_ssic_port_unused_quirk(hcd, false);
>
>
On Friday, June 21, 2019 10:59:09 AM CEST Vinod Koul wrote:
> + /*
> + * The Firmware's Data Format is describe in
> + * "6.3 Data Format" R19UH0078EJ0500 Rev.5.00 page 124
> + */
> +
> + /* "Each row is 8 bytes". => firmware size must be a multiple of 8. */
> + if (length % 8 != 0)
> + dev_warn(&dev->dev, "firmware size is not a multiple of 8.");
It doesn't look like this holds true for the newer K2026090.mem which
arguably fixes a lot of bugs over K2013080.mem. I think we should remove
this check and message.
Cheers,
Christian
On 21-06-19, 21:59, Christian Lamparter wrote:
> On Friday, June 21, 2019 10:59:09 AM CEST Vinod Koul wrote:
> > + /*
> > + * The Firmware's Data Format is describe in
> > + * "6.3 Data Format" R19UH0078EJ0500 Rev.5.00 page 124
> > + */
> > +
> > + /* "Each row is 8 bytes". => firmware size must be a multiple of 8. */
> > + if (length % 8 != 0)
> > + dev_warn(&dev->dev, "firmware size is not a multiple of 8.");
>
> It doesn't look like this holds true for the newer K2026090.mem which
> arguably fixes a lot of bugs over K2013080.mem. I think we should remove
> this check and message.
The documentation still says so, that is why I changed error return and
this to warning. Yeah lets remove to not confuse folks :)
--
~Vinod
On 21-06-19, 21:53, Christian Lamparter wrote:
> On Friday, June 21, 2019 10:59:10 AM CEST Vinod Koul wrote:
> > From: Christian Lamparter <[email protected]>
> >
> > This patch adds a firmware check for the uPD720201K8-711-BAC-A
> > and uPD720202K8-711-BAA-A variant. Both of these chips are listed
> > in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
> > devices which need a firmware in order to work as they do not have
> > support to load the firmware from an external ROM.
> >
> > Currently, the xhci-pci driver is unable to initialize the hcd in
> > this case. Instead it will wait for 30 seconds and cause a timeout
> > in xhci_handshake() and fails.
> >
> > [ 5.116990] xhci_hcd 0000:45:00.0: new USB bus registered ...
> > [ 32.335215] xhci_hcd 0000:45:00.0: can't setup: -110
> > [ 32.340179] xhci_hcd 0000:45:00.0: USB bus 2 deregistered
> > [ 32.345587] xhci_hcd 0000:45:00.0: init 0000:45:00.0 fail, -110
> > [ 32.351496] xhci_hcd: probe of 0000:45:00.0 failed with error -110
> >
> > Cc: Yoshihiro Shimoda <[email protected]>
> > Signed-off-by: Christian Lamparter <[email protected]>
> > Signed-off-by: Bjorn Andersson <[email protected]>
> > Signed-off-by: Vinod Koul <[email protected]>
>
> >From what I remember, this was the "backup" patch that just prevented
> a stuck device (since the xhci-pci would trigger the watchdog on the
> powerpc APM82181). I posted because it because I didn't get any reply
> from Greg or Felipe. This patch should be skipable since patch 1/5 adds
> the full loader.
Okay let me drop this then!
--
~Vinod
On 21-06-19, 21:46, Christian Lamparter wrote:
> On Friday, June 21, 2019 10:59:13 AM CEST Vinod Koul wrote:
> > Allow multiple firmware file versions in table and load them in
> > increasing order as we find them in the file system.
> >
> > Signed-off-by: Vinod Koul <[email protected]>
> > Cc: Yoshihiro Shimoda <[email protected]>
> > Cc: Christian Lamparter <[email protected]>
> > ---
> > drivers/usb/host/xhci-pci.c | 46 +++++++++++++++++++++++++++++++++++--
> > 1 file changed, 44 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
> > index 771948ce3d38..1fb890984d6d 100644
> > --- a/drivers/usb/host/xhci-pci.c
> > +++ b/drivers/usb/host/xhci-pci.c
> > @@ -336,13 +336,19 @@ static const struct renesas_fw_entry {
> > * - uPD720201 ES 2.0 sample whose revision ID is 2.
> > * - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
> > * - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
> > + *
> > + * Entry expected_version should be kept in increasing order for a
> > + * chip, so that driver will pick first version and if that fails
> > + * then next one will be picked
>
> Wouldn't it be better to do that in reverse order and try the latest
> firmware first? And then fall back to the older ones?
Yeah that seems better will update the order.
>
> > */
> > { "K2013080.mem", 0x0014, 0x02, 0x2013 },
> > { "K2013080.mem", 0x0014, 0x03, 0x2013 },
> > + { "K2026090.mem", 0x0014, 0x03, 0x2026 },
> > { "K2013080.mem", 0x0015, 0x02, 0x2013 },
> The uPD720202 (ProductID 0x0015 with rev 0x02) also
> works with the K2026090.mem I found online.
>
> so,
>
> + { "K2026090.mem", 0x0015, 0x02, 0x2026 },
Thanks for checking out, I will add this add send updated patch
--
~Vinod
On 21-06-19, 21:41, Christian Lamparter wrote:
> On Friday, June 21, 2019 10:59:08 AM CEST Vinod Koul wrote:
> > This series add support for Renesas USB controllers uPD720201 and uPD720202.
> > These require firmware to be loaded and in case devices have ROM those can
> > also be programmed if empty. If ROM is programmed, it runs from ROM as well.
> >
> > This includes two patches from Christian which supported these controllers
> > w/o ROM and later my patches for ROM support and multiple firmware versions.
> >
> > Changes in v2:
> > used macros for timeout count and delay
> > removed renesas_fw_alive_check
> > cleaned renesas_fw_callback
> > removed recurion for renesas_fw_download
> > added MODULE_FIRMWARE
> > added comment for multiple fw order
> >
> > Christian Lamparter (2):
> > usb: xhci: add firmware loader for uPD720201 and uPD720202 w/o ROM
> > usb: xhci: handle uPD720201 and uPD720202 w/o ROM
> >
> > Vinod Koul (3):
> > usb: xhci: Use register defined and field names
> > usb: xhci: Add ROM loader for uPD720201
> > usb: xhci: allow multiple firmware versions
> >
> > drivers/usb/host/xhci-pci.c | 942 ++++++++++++++++++++++++++++++++++++
> > 1 file changed, 942 insertions(+)
> >
>
> bootlog from a Netgear WNDR4700 with a 32GiB USB3 Stick attached to the
> Renesas uPD720202K8-711-BAA-A chip.
>
> [ 13.523094] xhci_hcd 0000:45:00.0: firmware size is not a multiple of 8.
> [ 13.868071] xhci_hcd 0000:45:00.0: xHCI Host Controller
> [ 13.873325] xhci_hcd 0000:45:00.0: new USB bus registered, assigned bus number 2
> [ 13.886296] xhci_hcd 0000:45:00.0: hcc params 0x014051cf hci version 0x100 quirks 0x0000000101000090
> [ 13.902719] usbcore: registered new interface driver usb-storage
> [ 13.909277] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
> [ 13.917336] hub 2-0:1.0: USB hub found
> [ 13.921432] init: - preinit -
> [ 13.930356] hub 2-0:1.0: 2 ports detected
> [ 13.942869] xhci_hcd 0000:45:00.0: xHCI Host Controller
> [ 13.948122] xhci_hcd 0000:45:00.0: new USB bus registered, assigned bus number 3
> [ 13.955514] xhci_hcd 0000:45:00.0: Host supports USB 3.0 SuperSpeed
> [ 13.981227] usb usb3: We don't know the algorithms for LPM for this host, disabling LPM.
> [ 13.997141] hub 3-0:1.0: USB hub found
> [ 14.004375] hub 3-0:1.0: 2 ports detected
> [ 14.375644] usb-storage 1-1:1.0: USB Mass Storage device detected
> [ 14.382247] scsi host1: usb-storage 1-1:1.0
> [ 14.438959] usb 3-2: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
> [ 14.467746] usb-storage 3-2:1.0: USB Mass Storage device detected
> [ 14.474241] scsi host2: usb-storage 3-2:1.0
> [ 15.394562] scsi 1:0:0:0: Direct-Access Generic STORAGE DEVICE 9454 PQ: 0 ANSI: 0
> [ 15.405183] sd 1:0:0:0: [sda] Attached SCSI removable disk
> [ 15.522448] scsi 2:0:0:0: Direct-Access SanDisk Ultra 1.00 PQ: 0 ANSI: 6
> [ 15.531952] sd 2:0:0:0: [sdb] 60063744 512-byte logical blocks: (30.8 GB/28.6 GiB)
> [ 15.541007] sd 2:0:0:0: [sdb] Write Protect is off
> [ 15.546808] sd 2:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
> [ 15.574567] sdb: sdb1
> [ 15.580581] sd 2:0:0:0: [sdb] Attached SCSI removable disk
>
> This is working.
>
> Tested-by: Christian Lamparter <[email protected]>
Thanks for the verification Christian.
Regards
--
~Vinod