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Date: Fri, 8 Feb 2019 22:58:38 +0000
From: "Derrick, Jonathan" <jonathan.derrick@...el.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"zub@...ux.fjfi.cvut.cz" <zub@...ux.fjfi.cvut.cz>,
"linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
"sbauer@...donthack.me" <sbauer@...donthack.me>,
"axboe@...nel.dk" <axboe@...nel.dk>
CC: "jonas.rabenstein@...dium.uni-erlangen.de"
<jonas.rabenstein@...dium.uni-erlangen.de>
Subject: Re: [PATCH v4 12/16] block: sed-opal: unify retrieval of table
columns
Looks good
Reviewed-by: Jon Derrick <jonathan.derrick@...el.com>
On Fri, 2019-02-01 at 21:50 +0100, David Kozub wrote:
> From: Jonas Rabenstein <jonas.rabenstein@...dium.uni-erlangen.de>
>
> Instead of having multiple places defining the same argument list to get
> a specific column of a sed-opal table, provide a generic version and
> call it from those functions.
>
> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@...dium.uni-erlangen.de>
> Reviewed-by: Scott Bauer <sbauer@...donthack.me>
> ---
> block/opal_proto.h | 2 +
> block/sed-opal.c | 132 +++++++++++++++++----------------------------
> 2 files changed, 50 insertions(+), 84 deletions(-)
>
> diff --git a/block/opal_proto.h b/block/opal_proto.h
> index e20be8258854..b6e352cfe982 100644
> --- a/block/opal_proto.h
> +++ b/block/opal_proto.h
> @@ -170,6 +170,8 @@ enum opal_token {
> OPAL_READLOCKED = 0x07,
> OPAL_WRITELOCKED = 0x08,
> OPAL_ACTIVEKEY = 0x0A,
> + /* lockingsp table */
> + OPAL_LIFECYCLE = 0x06,
> /* locking info table */
> OPAL_MAXRANGES = 0x04,
> /* mbr control */
> diff --git a/block/sed-opal.c b/block/sed-opal.c
> index 88c84906ce98..2459ac4d523b 100644
> --- a/block/sed-opal.c
> +++ b/block/sed-opal.c
> @@ -1089,6 +1089,37 @@ static int finalize_and_send(struct opal_dev *dev, cont_fn cont)
> return opal_send_recv(dev, cont);
> }
>
> +/*
> + * request @column from table @table on device @dev. On success, the column
> + * data will be available in dev->resp->tok[4]
> + */
> +static int generic_get_column(struct opal_dev *dev, const u8 *table,
> + u64 column)
> +{
> + int err;
> +
> + err = cmd_start(dev, table, opalmethod[OPAL_GET]);
> +
> + add_token_u8(&err, dev, OPAL_STARTLIST);
> +
> + add_token_u8(&err, dev, OPAL_STARTNAME);
> + add_token_u8(&err, dev, OPAL_STARTCOLUMN);
> + add_token_u64(&err, dev, column);
> + add_token_u8(&err, dev, OPAL_ENDNAME);
> +
> + add_token_u8(&err, dev, OPAL_STARTNAME);
> + add_token_u8(&err, dev, OPAL_ENDCOLUMN);
> + add_token_u64(&err, dev, column);
> + add_token_u8(&err, dev, OPAL_ENDNAME);
> +
> + add_token_u8(&err, dev, OPAL_ENDLIST);
> +
> + if (err)
> + return err;
> +
> + return finalize_and_send(dev, parse_and_check_status);
> +}
> +
> static int gen_key(struct opal_dev *dev, void *data)
> {
> u8 uid[OPAL_UID_LENGTH];
> @@ -1143,23 +1174,11 @@ static int get_active_key(struct opal_dev *dev, void *data)
> if (err)
> return err;
>
> - err = cmd_start(dev, uid, opalmethod[OPAL_GET]);
> - add_token_u8(&err, dev, OPAL_STARTLIST);
> - add_token_u8(&err, dev, OPAL_STARTNAME);
> - add_token_u8(&err, dev, 3); /* startCloumn */
> - add_token_u8(&err, dev, 10); /* ActiveKey */
> - add_token_u8(&err, dev, OPAL_ENDNAME);
> - add_token_u8(&err, dev, OPAL_STARTNAME);
> - add_token_u8(&err, dev, 4); /* endColumn */
> - add_token_u8(&err, dev, 10); /* ActiveKey */
> - add_token_u8(&err, dev, OPAL_ENDNAME);
> - add_token_u8(&err, dev, OPAL_ENDLIST);
> - if (err) {
> - pr_debug("Error building get active key command\n");
> + err = generic_get_column(dev, uid, OPAL_ACTIVEKEY);
> + if (err)
> return err;
> - }
>
> - return finalize_and_send(dev, get_active_key_cont);
> + return get_active_key_cont(dev);
> }
>
> static int generic_lr_enable_disable(struct opal_dev *dev,
> @@ -1820,17 +1839,19 @@ static int activate_lsp(struct opal_dev *dev, void *data)
> return finalize_and_send(dev, parse_and_check_status);
> }
>
> -static int get_lsp_lifecycle_cont(struct opal_dev *dev)
> +/* Determine if we're in the Manufactured Inactive or Active state */
> +static int get_lsp_lifecycle(struct opal_dev *dev, void *data)
> {
> u8 lc_status;
> - int error = 0;
> + int err;
>
> - error = parse_and_check_status(dev);
> - if (error)
> - return error;
> + err = generic_get_column(dev, opaluid[OPAL_LOCKINGSP_UID],
> + OPAL_LIFECYCLE);
> + if (err)
> + return err;
>
> lc_status = response_get_u64(&dev->parsed, 4);
> - /* 0x08 is Manufacured Inactive */
> + /* 0x08 is Manufactured Inactive */
> /* 0x09 is Manufactured */
> if (lc_status != OPAL_MANUFACTURED_INACTIVE) {
> pr_debug("Couldn't determine the status of the Lifecycle state\n");
> @@ -1840,49 +1861,19 @@ static int get_lsp_lifecycle_cont(struct opal_dev *dev)
> return 0;
> }
>
> -/* Determine if we're in the Manufactured Inactive or Active state */
> -static int get_lsp_lifecycle(struct opal_dev *dev, void *data)
> -{
> - int err;
> -
> - err = cmd_start(dev, opaluid[OPAL_LOCKINGSP_UID],
> - opalmethod[OPAL_GET]);
> -
> - add_token_u8(&err, dev, OPAL_STARTLIST);
> -
> - add_token_u8(&err, dev, OPAL_STARTNAME);
> - add_token_u8(&err, dev, 3); /* Start Column */
> - add_token_u8(&err, dev, 6); /* Lifecycle Column */
> - add_token_u8(&err, dev, OPAL_ENDNAME);
> -
> - add_token_u8(&err, dev, OPAL_STARTNAME);
> - add_token_u8(&err, dev, 4); /* End Column */
> - add_token_u8(&err, dev, 6); /* Lifecycle Column */
> - add_token_u8(&err, dev, OPAL_ENDNAME);
> -
> - add_token_u8(&err, dev, OPAL_ENDLIST);
> -
> - if (err) {
> - pr_debug("Error Building GET Lifecycle Status command\n");
> - return err;
> - }
> -
> - return finalize_and_send(dev, get_lsp_lifecycle_cont);
> -}
> -
> -static int get_msid_cpin_pin_cont(struct opal_dev *dev)
> +static int get_msid_cpin_pin(struct opal_dev *dev, void *data)
> {
> const char *msid_pin;
> size_t strlen;
> - int error = 0;
> + int err;
>
> - error = parse_and_check_status(dev);
> - if (error)
> - return error;
> + err = generic_get_column(dev, opaluid[OPAL_C_PIN_MSID], OPAL_PIN);
> + if (err)
> + return err;
>
> strlen = response_get_string(&dev->parsed, 4, &msid_pin);
> if (!msid_pin) {
> - pr_debug("%s: Couldn't extract PIN from response\n", __func__);
> + pr_debug("Couldn't extract MSID_CPIN from response\n");
> return OPAL_INVAL_PARAM;
> }
>
> @@ -1895,33 +1886,6 @@ static int get_msid_cpin_pin_cont(struct opal_dev *dev)
> return 0;
> }
>
> -static int get_msid_cpin_pin(struct opal_dev *dev, void *data)
> -{
> - int err;
> -
> - err = cmd_start(dev, opaluid[OPAL_C_PIN_MSID],
> - opalmethod[OPAL_GET]);
> -
> - add_token_u8(&err, dev, OPAL_STARTLIST);
> - add_token_u8(&err, dev, OPAL_STARTNAME);
> - add_token_u8(&err, dev, 3); /* Start Column */
> - add_token_u8(&err, dev, 3); /* PIN */
> - add_token_u8(&err, dev, OPAL_ENDNAME);
> -
> - add_token_u8(&err, dev, OPAL_STARTNAME);
> - add_token_u8(&err, dev, 4); /* End Column */
> - add_token_u8(&err, dev, 3); /* Lifecycle Column */
> - add_token_u8(&err, dev, OPAL_ENDNAME);
> - add_token_u8(&err, dev, OPAL_ENDLIST);
> -
> - if (err) {
> - pr_debug("Error building Get MSID CPIN PIN command.\n");
> - return err;
> - }
> -
> - return finalize_and_send(dev, get_msid_cpin_pin_cont);
> -}
> -
> static int end_opal_session(struct opal_dev *dev, void *data)
> {
> int err = 0;
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