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39 #include <fsl_mc_sys.h>
40 #include <fsl_mc_cmd.h>
42 #include <rte_spinlock.h>
44 /** User space framework uses MC Portal in shared mode. Following change
45 * introduces lock in MC FLIB
49 * A static spinlock initializer.
51 static rte_spinlock_t mc_portal_lock = RTE_SPINLOCK_INITIALIZER;
53 static int mc_status_to_error(enum mc_cmd_status status)
56 case MC_CMD_STATUS_OK:
58 case MC_CMD_STATUS_AUTH_ERR:
59 return -EACCES; /* Token error */
60 case MC_CMD_STATUS_NO_PRIVILEGE:
61 return -EPERM; /* Permission denied */
62 case MC_CMD_STATUS_DMA_ERR:
63 return -EIO; /* Input/Output error */
64 case MC_CMD_STATUS_CONFIG_ERR:
65 return -EINVAL; /* Device not configured */
66 case MC_CMD_STATUS_TIMEOUT:
67 return -ETIMEDOUT; /* Operation timed out */
68 case MC_CMD_STATUS_NO_RESOURCE:
69 return -ENAVAIL; /* Resource temporarily unavailable */
70 case MC_CMD_STATUS_NO_MEMORY:
71 return -ENOMEM; /* Cannot allocate memory */
72 case MC_CMD_STATUS_BUSY:
73 return -EBUSY; /* Device busy */
74 case MC_CMD_STATUS_UNSUPPORTED_OP:
75 return -ENOTSUP; /* Operation not supported by device */
76 case MC_CMD_STATUS_INVALID_STATE:
77 return -ENODEV; /* Invalid device state */
82 /* Not expected to reach here */
86 int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd)
88 enum mc_cmd_status status;
90 if (!mc_io || !mc_io->regs)
93 /* --- Call lock function here in case portal is shared --- */
94 rte_spinlock_lock(&mc_portal_lock);
96 mc_write_command(mc_io->regs, cmd);
98 /* Spin until status changes */
100 status = MC_CMD_HDR_READ_STATUS(ioread64(mc_io->regs));
102 /* --- Call wait function here to prevent blocking ---
103 * Change the loop condition accordingly to exit on timeout.
105 } while (status == MC_CMD_STATUS_READY);
107 /* Read the response back into the command buffer */
108 mc_read_response(mc_io->regs, cmd);
110 /* --- Call unlock function here in case portal is shared --- */
111 rte_spinlock_unlock(&mc_portal_lock);
113 return mc_status_to_error(status);