diff options
Diffstat (limited to 'drivers/misc/cxl/native.c')
| -rw-r--r-- | drivers/misc/cxl/native.c | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index f2b37b41a0d..29185fc6127 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -18,24 +18,28 @@ #include <misc/cxl.h> #include "cxl.h" +#include "trace.h" static int afu_control(struct cxl_afu *afu, u64 command, u64 result, u64 mask, bool enabled) { u64 AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An); unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); + int rc = 0; spin_lock(&afu->afu_cntl_lock); pr_devel("AFU command starting: %llx\n", command); + trace_cxl_afu_ctrl(afu, command); + cxl_p2n_write(afu, CXL_AFU_Cntl_An, AFU_Cntl | command); AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An); while ((AFU_Cntl & mask) != result) { if (time_after_eq(jiffies, timeout)) { dev_warn(&afu->dev, "WARNING: AFU control timed out!\n"); - spin_unlock(&afu->afu_cntl_lock); - return -EBUSY; + rc = -EBUSY; + goto out; } pr_devel_ratelimited("AFU control... (0x%.16llx)\n", AFU_Cntl | command); @@ -44,9 +48,11 @@ static int afu_control(struct cxl_afu *afu, u64 command, }; pr_devel("AFU command complete: %llx\n", command); afu->enabled = enabled; +out: + trace_cxl_afu_ctrl_done(afu, command, rc); spin_unlock(&afu->afu_cntl_lock); - return 0; + return rc; } static int afu_enable(struct cxl_afu *afu) @@ -91,6 +97,9 @@ int cxl_psl_purge(struct cxl_afu *afu) u64 dsisr, dar; u64 start, end; unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); + int rc = 0; + + trace_cxl_psl_ctrl(afu, CXL_PSL_SCNTL_An_Pc); pr_devel("PSL purge request\n"); @@ -107,7 +116,8 @@ int cxl_psl_purge(struct cxl_afu *afu) == CXL_PSL_SCNTL_An_Ps_Pending) { if (time_after_eq(jiffies, timeout)) { dev_warn(&afu->dev, "WARNING: PSL Purge timed out!\n"); - return -EBUSY; + rc = -EBUSY; + goto out; } dsisr = cxl_p2n_read(afu, CXL_PSL_DSISR_An); pr_devel_ratelimited("PSL purging... PSL_CNTL: 0x%.16llx PSL_DSISR: 0x%.16llx\n", PSL_CNTL, dsisr); @@ -128,7 +138,9 @@ int cxl_psl_purge(struct cxl_afu *afu) cxl_p1n_write(afu, CXL_PSL_SCNTL_An, PSL_CNTL & ~CXL_PSL_SCNTL_An_Pc); - return 0; +out: + trace_cxl_psl_ctrl_done(afu, CXL_PSL_SCNTL_An_Pc, rc); + return rc; } static int spa_max_procs(int spa_size) @@ -185,6 +197,7 @@ static int alloc_spa(struct cxl_afu *afu) static void release_spa(struct cxl_afu *afu) { + cxl_p1n_write(afu, CXL_PSL_SPAP_An, 0); free_pages((unsigned long) afu->spa, afu->spa_order); } @@ -278,6 +291,9 @@ static int do_process_element_cmd(struct cxl_context *ctx, { u64 state; unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); + int rc = 0; + + trace_cxl_llcmd(ctx, cmd); WARN_ON(!ctx->afu->enabled); @@ -289,12 +305,14 @@ static int do_process_element_cmd(struct cxl_context *ctx, while (1) { if (time_after_eq(jiffies, timeout)) { dev_warn(&ctx->afu->dev, "WARNING: Process Element Command timed out!\n"); - return -EBUSY; + rc = -EBUSY; + goto out; } state = be64_to_cpup(ctx->afu->sw_command_status); if (state == ~0ULL) { pr_err("cxl: Error adding process element to AFU\n"); - return -1; + rc = -1; + goto out; } if ((state & (CXL_SPA_SW_CMD_MASK | CXL_SPA_SW_STATE_MASK | CXL_SPA_SW_LINK_MASK)) == (cmd | (cmd >> 16) | ctx->pe)) @@ -309,7 +327,9 @@ static int do_process_element_cmd(struct cxl_context *ctx, schedule(); } - return 0; +out: + trace_cxl_llcmd_done(ctx, cmd, rc); + return rc; } static int add_process_element(struct cxl_context *ctx) @@ -629,6 +649,8 @@ static inline int detach_process_native_afu_directed(struct cxl_context *ctx) int cxl_detach_process(struct cxl_context *ctx) { + trace_cxl_detach(ctx); + if (ctx->afu->current_mode == CXL_MODE_DEDICATED) return detach_process_native_dedicated(ctx); @@ -667,6 +689,7 @@ static void recover_psl_err(struct cxl_afu *afu, u64 errstat) int cxl_ack_irq(struct cxl_context *ctx, u64 tfc, u64 psl_reset_mask) { + trace_cxl_psl_irq_ack(ctx, tfc); if (tfc) cxl_p2n_write(ctx->afu, CXL_PSL_TFC_An, tfc); if (psl_reset_mask) |