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fsi: occ: Update response size to 8kb

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Newer OCCs return more data.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Ninad Palsule <ninad@linux.ibm.com>
Link: https://patch.msgid.link/20251008152157.1387182-1-eajames@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eddie James
2025-10-08 10:21:57 -05:00
committed by Greg Kroah-Hartman
parent 8ae7090dc7
commit 73350c3852
1 changed files with 6 additions and 10 deletions
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16
drivers/fsi/fsi-occ.c
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@@ -22,9 +22,9 @@
#include <linux/uaccess.h>
#include <linux/unaligned.h>
#define OCC_SRAM_BYTES 4096
#define OCC_CMD_DATA_BYTES 4090
#define OCC_RESP_DATA_BYTES 4089
#define OCC_SRAM_BYTES 8192
#define OCC_CMD_DATA_BYTES 8186
#define OCC_RESP_DATA_BYTES 8185
#define OCC_P9_SRAM_CMD_ADDR 0xFFFBE000
#define OCC_P9_SRAM_RSP_ADDR 0xFFFBF000
@@ -86,7 +86,7 @@ static int occ_open(struct inode *inode, struct file *file)
if (!client)
return -ENOMEM;
client->buffer = (u8 *)__get_free_page(GFP_KERNEL);
client->buffer = kvmalloc(OCC_SRAM_BYTES, GFP_KERNEL);
if (!client->buffer) {
kfree(client);
return -ENOMEM;
@@ -97,10 +97,6 @@ static int occ_open(struct inode *inode, struct file *file)
file->private_data = client;
get_device(occ->dev);
/* We allocate a 1-page buffer, make sure it all fits */
BUILD_BUG_ON((OCC_CMD_DATA_BYTES + 3) > PAGE_SIZE);
BUILD_BUG_ON((OCC_RESP_DATA_BYTES + 7) > PAGE_SIZE);
return 0;
}
@@ -176,7 +172,7 @@ static ssize_t occ_write(struct file *file, const char __user *buf,
}
/* Submit command; 4 bytes before the data and 2 bytes after */
rlen = PAGE_SIZE;
rlen = OCC_SRAM_BYTES;
rc = fsi_occ_submit(client->occ->dev, cmd, data_length + 6, cmd,
&rlen);
if (rc)
@@ -200,7 +196,7 @@ static int occ_release(struct inode *inode, struct file *file)
struct occ_client *client = file->private_data;
put_device(client->occ->dev);
free_page((unsigned long)client->buffer);
kvfree(client->buffer);
kfree(client);
return 0;