From: Hariprasad Shenai Date: Tue, 27 Jan 2015 08:17:47 +0000 (+0530) Subject: cxgb4: Addded support in debugfs to dump CIM outbound queue content X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c778af7d18646247310b7bceaf3eacc6eeee1614;p=linux-beck.git cxgb4: Addded support in debugfs to dump CIM outbound queue content Signed-off-by: Hariprasad Shenai Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index 368b5ad20835..da94b9a2f347 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -1056,6 +1056,8 @@ int t4_edc_read(struct adapter *adap, int idx, u32 addr, __be32 *data, u64 *parity); int t4_read_cim_ibq(struct adapter *adap, unsigned int qid, u32 *data, size_t n); +int t4_read_cim_obq(struct adapter *adap, unsigned int qid, u32 *data, + size_t n); int t4_cim_read(struct adapter *adap, unsigned int addr, unsigned int n, unsigned int *valp); int t4_cim_write(struct adapter *adap, unsigned int addr, unsigned int n, diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c index 3f4b07ef580e..4619bb3ff990 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c @@ -104,6 +104,17 @@ struct seq_tab *seq_open_tab(struct file *f, unsigned int rows, return p; } +/* Trim the size of a seq_tab to the supplied number of rows. The operation is + * irreversible. + */ +static int seq_tab_trim(struct seq_tab *p, unsigned int new_rows) +{ + if (new_rows > p->rows) + return -EINVAL; + p->rows = new_rows; + return 0; +} + static int cim_la_show(struct seq_file *seq, void *v, int idx) { if (v == SEQ_START_TOKEN) @@ -275,6 +286,35 @@ static const struct file_operations cim_ibq_fops = { .release = seq_release_private }; +static int cim_obq_open(struct inode *inode, struct file *file) +{ + int ret; + struct seq_tab *p; + unsigned int qid = (uintptr_t)inode->i_private & 7; + struct adapter *adap = inode->i_private - qid; + + p = seq_open_tab(file, 6 * CIM_OBQ_SIZE, 4 * sizeof(u32), 0, cimq_show); + if (!p) + return -ENOMEM; + + ret = t4_read_cim_obq(adap, qid, (u32 *)p->data, 6 * CIM_OBQ_SIZE * 4); + if (ret < 0) { + seq_release_private(inode, file); + } else { + seq_tab_trim(p, ret / 4); + ret = 0; + } + return ret; +} + +static const struct file_operations cim_obq_fops = { + .owner = THIS_MODULE, + .open = cim_obq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private +}; + /* Firmware Device Log dump. */ static const char * const devlog_level_strings[] = { [FW_DEVLOG_LEVEL_EMERG] = "EMERG", @@ -1388,14 +1428,31 @@ int t4_setup_debugfs(struct adapter *adap) { "ibq_sge0", &cim_ibq_fops, S_IRUSR, 3 }, { "ibq_sge1", &cim_ibq_fops, S_IRUSR, 4 }, { "ibq_ncsi", &cim_ibq_fops, S_IRUSR, 5 }, + { "obq_ulp0", &cim_obq_fops, S_IRUSR, 0 }, + { "obq_ulp1", &cim_obq_fops, S_IRUSR, 1 }, + { "obq_ulp2", &cim_obq_fops, S_IRUSR, 2 }, + { "obq_ulp3", &cim_obq_fops, S_IRUSR, 3 }, + { "obq_sge", &cim_obq_fops, S_IRUSR, 4 }, + { "obq_ncsi", &cim_obq_fops, S_IRUSR, 5 }, #if IS_ENABLED(CONFIG_IPV6) { "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 }, #endif }; + /* Debug FS nodes common to all T5 and later adapters. + */ + static struct t4_debugfs_entry t5_debugfs_files[] = { + { "obq_sge_rx_q0", &cim_obq_fops, S_IRUSR, 6 }, + { "obq_sge_rx_q1", &cim_obq_fops, S_IRUSR, 7 }, + }; + add_debugfs_files(adap, t4_debugfs_files, ARRAY_SIZE(t4_debugfs_files)); + if (!is_t4(adap->params.chip)) + add_debugfs_files(adap, + t5_debugfs_files, + ARRAY_SIZE(t5_debugfs_files)); i = t4_read_reg(adap, MA_TARGET_MEM_ENABLE_A); if (i & EDRAM0_ENABLE_F) { diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index 4ea4a4a9c426..a3d2f31439c4 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -4567,6 +4567,49 @@ int t4_read_cim_ibq(struct adapter *adap, unsigned int qid, u32 *data, size_t n) return i; } +/** + * t4_read_cim_obq - read the contents of a CIM outbound queue + * @adap: the adapter + * @qid: the queue index + * @data: where to store the queue contents + * @n: capacity of @data in 32-bit words + * + * Reads the contents of the selected CIM queue starting at address 0 up + * to the capacity of @data. @n must be a multiple of 4. Returns < 0 on + * error and the number of 32-bit words actually read on success. + */ +int t4_read_cim_obq(struct adapter *adap, unsigned int qid, u32 *data, size_t n) +{ + int i, err; + unsigned int addr, v, nwords; + int cim_num_obq = is_t4(adap->params.chip) ? + CIM_NUM_OBQ : CIM_NUM_OBQ_T5; + + if ((qid > (cim_num_obq - 1)) || (n & 3)) + return -EINVAL; + + t4_write_reg(adap, CIM_QUEUE_CONFIG_REF_A, OBQSELECT_F | + QUENUMSELECT_V(qid)); + v = t4_read_reg(adap, CIM_QUEUE_CONFIG_CTRL_A); + + addr = CIMQBASE_G(v) * 64; /* muliple of 256 -> muliple of 4 */ + nwords = CIMQSIZE_G(v) * 64; /* same */ + if (n > nwords) + n = nwords; + + for (i = 0; i < n; i++, addr++) { + t4_write_reg(adap, CIM_OBQ_DBG_CFG_A, OBQDBGADDR_V(addr) | + OBQDBGEN_F); + err = t4_wait_op_done(adap, CIM_OBQ_DBG_CFG_A, OBQDBGBUSY_F, 0, + 2, 1); + if (err) + return err; + *data++ = t4_read_reg(adap, CIM_OBQ_DBG_DATA_A); + } + t4_write_reg(adap, CIM_OBQ_DBG_CFG_A, 0); + return i; +} + /** * t4_cim_read - read a block from CIM internal address space * @adap: the adapter diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h index 6581cd5949d1..f9fb81e4826e 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h @@ -61,6 +61,7 @@ enum { CIM_NUM_OBQ_T5 = 8, /* # of CIM OBQs for T5 adapter */ CIMLA_SIZE = 2048, /* # of 32-bit words in CIM LA */ CIM_IBQ_SIZE = 128, /* # of 128-bit words in a CIM IBQ */ + CIM_OBQ_SIZE = 128, /* # of 128-bit words in a CIM OBQ */ }; enum { diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h index 39e4b7565a34..1b1560acde2e 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h @@ -2553,7 +2553,23 @@ #define IBQDBGEN_V(x) ((x) << IBQDBGEN_S) #define IBQDBGEN_F IBQDBGEN_V(1U) +#define CIM_OBQ_DBG_CFG_A 0x7b64 + +#define OBQDBGADDR_S 16 +#define OBQDBGADDR_M 0xfffU +#define OBQDBGADDR_V(x) ((x) << OBQDBGADDR_S) +#define OBQDBGADDR_G(x) (((x) >> OBQDBGADDR_S) & OBQDBGADDR_M) + +#define OBQDBGBUSY_S 1 +#define OBQDBGBUSY_V(x) ((x) << OBQDBGBUSY_S) +#define OBQDBGBUSY_F OBQDBGBUSY_V(1U) + +#define OBQDBGEN_S 0 +#define OBQDBGEN_V(x) ((x) << OBQDBGEN_S) +#define OBQDBGEN_F OBQDBGEN_V(1U) + #define CIM_IBQ_DBG_DATA_A 0x7b68 +#define CIM_OBQ_DBG_DATA_A 0x7b6c #define UPDBGLARDEN_S 1 #define UPDBGLARDEN_V(x) ((x) << UPDBGLARDEN_S)