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cxgb4: Add debugfs entry to dump the contents of the flash
Adds support to dump the contents of the flash in the adapter Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1650d5455b
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49216c1c17
@ -1008,7 +1008,10 @@ static inline int t4_memory_write(struct adapter *adap, int mtype, u32 addr,
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int t4_seeprom_wp(struct adapter *adapter, bool enable);
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int get_vpd_params(struct adapter *adapter, struct vpd_params *p);
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int t4_read_flash(struct adapter *adapter, unsigned int addr,
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unsigned int nwords, u32 *data, int byte_oriented);
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int t4_load_fw(struct adapter *adapter, const u8 *fw_data, unsigned int size);
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int t4_fwcache(struct adapter *adap, enum fw_params_param_dev_fwcache op);
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int t4_fw_upgrade(struct adapter *adap, unsigned int mbox,
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const u8 *fw_data, unsigned int size, int force);
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unsigned int t4_flash_cfg_addr(struct adapter *adapter);
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@ -434,6 +434,51 @@ static const struct file_operations devlog_fops = {
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.release = seq_release_private
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};
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static ssize_t flash_read(struct file *file, char __user *buf, size_t count,
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loff_t *ppos)
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{
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loff_t pos = *ppos;
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loff_t avail = FILE_DATA(file)->i_size;
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struct adapter *adap = file->private_data;
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if (pos < 0)
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return -EINVAL;
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if (pos >= avail)
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return 0;
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if (count > avail - pos)
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count = avail - pos;
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while (count) {
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size_t len;
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int ret, ofst;
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u8 data[256];
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ofst = pos & 3;
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len = min(count + ofst, sizeof(data));
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ret = t4_read_flash(adap, pos - ofst, (len + 3) / 4,
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(u32 *)data, 1);
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if (ret)
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return ret;
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len -= ofst;
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if (copy_to_user(buf, data + ofst, len))
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return -EFAULT;
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buf += len;
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pos += len;
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count -= len;
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}
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count = pos - *ppos;
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*ppos = pos;
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return count;
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}
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static const struct file_operations flash_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = mem_open,
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.read = flash_read,
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};
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static inline void tcamxy2valmask(u64 x, u64 y, u8 *addr, u64 *mask)
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{
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*mask = x | y;
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@ -579,6 +624,21 @@ static const struct file_operations clip_tbl_debugfs_fops = {
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};
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#endif
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int mem_open(struct inode *inode, struct file *file)
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{
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unsigned int mem;
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struct adapter *adap;
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file->private_data = inode->i_private;
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mem = (uintptr_t)file->private_data & 0x3;
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adap = file->private_data - mem;
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(void)t4_fwcache(adap, FW_PARAM_DEV_FWCACHE_FLUSH);
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return 0;
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}
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static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
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loff_t *ppos)
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{
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@ -616,7 +676,6 @@ static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
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*ppos = pos + count;
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return count;
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}
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static const struct file_operations mem_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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@ -624,6 +683,12 @@ static const struct file_operations mem_debugfs_fops = {
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.llseek = default_llseek,
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};
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static void set_debugfs_file_size(struct dentry *de, loff_t size)
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{
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if (!IS_ERR(de) && de->d_inode)
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de->d_inode->i_size = size;
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}
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static void add_debugfs_mem(struct adapter *adap, const char *name,
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unsigned int idx, unsigned int size_mb)
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{
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@ -655,6 +720,7 @@ int t4_setup_debugfs(struct adapter *adap)
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{
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int i;
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u32 size;
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struct dentry *de;
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static struct t4_debugfs_entry t4_debugfs_files[] = {
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{ "cim_la", &cim_la_fops, S_IRUSR, 0 },
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@ -697,5 +763,10 @@ int t4_setup_debugfs(struct adapter *adap)
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EXT_MEM1_SIZE_G(size));
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}
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}
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de = debugfs_create_file("flash", S_IRUSR, adap->debugfs_root, adap,
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&flash_debugfs_fops);
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set_debugfs_file_size(de, adap->params.sf_size);
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return 0;
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}
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@ -37,6 +37,8 @@
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#include <linux/export.h>
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#define FILE_DATA(_file) ((_file)->f_path.dentry->d_inode)
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struct t4_debugfs_entry {
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const char *name;
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const struct file_operations *ops;
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@ -60,5 +62,6 @@ int t4_setup_debugfs(struct adapter *adap);
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void add_debugfs_files(struct adapter *adap,
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struct t4_debugfs_entry *files,
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unsigned int nfiles);
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int mem_open(struct inode *inode, struct file *file);
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#endif
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@ -835,8 +835,8 @@ static int flash_wait_op(struct adapter *adapter, int attempts, int delay)
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* (i.e., big-endian), otherwise as 32-bit words in the platform's
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* natural endianess.
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*/
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static int t4_read_flash(struct adapter *adapter, unsigned int addr,
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unsigned int nwords, u32 *data, int byte_oriented)
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int t4_read_flash(struct adapter *adapter, unsigned int addr,
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unsigned int nwords, u32 *data, int byte_oriented)
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{
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int ret;
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@ -1239,6 +1239,30 @@ out:
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return ret;
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}
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/**
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* t4_fwcache - firmware cache operation
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* @adap: the adapter
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* @op : the operation (flush or flush and invalidate)
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*/
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int t4_fwcache(struct adapter *adap, enum fw_params_param_dev_fwcache op)
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{
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struct fw_params_cmd c;
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memset(&c, 0, sizeof(c));
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c.op_to_vfn =
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cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
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FW_CMD_REQUEST_F | FW_CMD_WRITE_F |
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FW_PARAMS_CMD_PFN_V(adap->fn) |
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FW_PARAMS_CMD_VFN_V(0));
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c.retval_len16 = cpu_to_be32(FW_LEN16(c));
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c.param[0].mnem =
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cpu_to_be32(FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
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FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_FWCACHE));
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c.param[0].val = (__force __be32)op;
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return t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), NULL);
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}
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#define ADVERT_MASK (FW_PORT_CAP_SPEED_100M | FW_PORT_CAP_SPEED_1G |\
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FW_PORT_CAP_SPEED_10G | FW_PORT_CAP_SPEED_40G | \
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FW_PORT_CAP_ANEG)
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@ -1062,6 +1062,7 @@ enum fw_params_param_dev {
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FW_PARAMS_PARAM_DEV_MAXORDIRD_QP = 0x13, /* max supported QP IRD/ORD */
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FW_PARAMS_PARAM_DEV_MAXIRD_ADAPTER = 0x14, /* max supported adap IRD */
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FW_PARAMS_PARAM_DEV_ULPTX_MEMWRITE_DSGL = 0x17,
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FW_PARAMS_PARAM_DEV_FWCACHE = 0x18,
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};
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/*
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@ -1121,6 +1122,11 @@ enum fw_params_param_dmaq {
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FW_PARAMS_PARAM_DMAQ_EQ_DCBPRIO_ETH = 0x13,
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};
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enum fw_params_param_dev_fwcache {
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FW_PARAM_DEV_FWCACHE_FLUSH = 0x00,
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FW_PARAM_DEV_FWCACHE_FLUSHINV = 0x01,
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};
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#define FW_PARAMS_MNEM_S 24
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#define FW_PARAMS_MNEM_V(x) ((x) << FW_PARAMS_MNEM_S)
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