HK1210296B - Extended utilization area for a memory device - Google Patents

Description

Extended utilization area of storage devices

This application is a divisional application of Chinese patent application 200980106241.1, filed on January 30, 2009, entitled “Extended Utilization Area of Storage Device”.

Technical Field

The present invention relates generally to storage devices and, more particularly, to systems, methods, and devices for providing runtime configuration of mass storage devices.

Background Art

In a typical environment involving digital data processing and/or data communication, a storage device is called for various reasons, such as to read, write, modify, delete, or change the attributes of data residing on the storage device. The target of these operations (hereinafter referred to as memory "access" operations) can be to access changing data blocks as needed by the application program that called the specific memory access operation. For example, an application can require access to small data blocks from random addresses, the same address, or consecutive addresses on the storage device. Similarly, the same or different applications can require access to large data blocks from random addresses, the same address, or consecutive addresses on the storage device. Examples of different applications that can access a storage device include a file system, different databases, a kernel reading code pages, and other applications that use the storage device.

Frequent situation is that mass storage device is optimized for a kind of application or defined group of application with specific memory access characteristic.This optimization for example may need to optimize the data throughput, service life and/or power consumption associated with storage device.Due to this fixed optimization strategy, when storage device is placed in the different environments with new access demand, it may not be possible to perform optimally under the requirement of the new environment.Aspect optimizing such storage device, lacking flexibility may be partly due to causing these storage devices to be unable to adapt to the inherent limitation of the optimization functionality that is used for multiple access operations.Yet, in other cases, the reason that selects optimized storage device to be used for defined and therefore limited group of application is to simplify design and realize cost saving.In addition, usually very difficult to predict the access requirement that necessary but as yet undetermined future application needs concerning storage device.

Summary of the Invention

Therefore, a method, system, and storage device are provided for overcoming the shortcomings of prior art systems by enabling runtime configuration of mass storage devices. In one embodiment of the present invention, a method for configuring access to a storage device is provided. The method includes receiving one or more commands for activating one or more access profiles associated with the storage device, and configuring access to the storage device based on at least one of the access profiles. The access profiles may correspond to at least one of a random and a sequential mode of access. The access profiles may further correspond to at least one of a read, write, erase, and modify attribute operation.

In another embodiment of the present invention, one or more access profiles are adapted to accommodate repeated access requests to the same address of the storage device. In another embodiment, one or more access profiles are adapted to produce optimized performance associated with the storage device. Furthermore, performance can be optimized based on at least one of: data throughput, lifespan, and power consumption associated with the storage device.

In another embodiment of the present invention, one or more received commands include a metadata portion specifying a preferred access profile corresponding to the command. Furthermore, specific storage locations may be utilized based on the access profile. In one embodiment, the specific storage location may include a portion of the storage device with specialized characteristics. For example, it may include a more durable and performance-efficient portion of physical memory, or a portion of memory utilizing a specific storage technology. In another embodiment, the specific storage location may include a separate physical memory chip.

In another embodiment of the present invention, one or more access profiles are associated with one or more partitions of the storage device. However, in another embodiment, the storage device is configured to be used in parallel for two or more concurrent access profiles. In one embodiment, such configuration is performed in accordance with the JESD 84 standard for eMMC. The configuration may further include specifying access priority levels to resolve conflicts in simultaneous access to storage resources. In another embodiment of the present invention, the storage device is configured to function both as a mass storage device and as a system memory. In another embodiment, a default access profile may be used to configure the storage device at power-up.

Another aspect of the present invention relates to a storage device comprising one or more registers for storing one or more predefined access profiles associated with the storage device. The storage device further comprises receiving means for receiving one or more commands for activating one or more access profiles associated with the storage device, and configuring means for configuring access to the storage device according to at least one of the predefined access profiles. In another embodiment, the currently active access profile may reside in a designated storage register. In another embodiment, one or more of the predefined access profiles may be updated with a new version of the access profile.

In another embodiment of the present invention, a computer program product embodied on a computer-readable medium is disclosed. The computer program product includes: computer code for receiving one or more commands for activating one or more access profiles associated with the storage device; and computer code for configuring access to the storage device based on at least one of the access profiles. In another embodiment, a system for accessing a storage device is disclosed. The system includes: an entity for receiving one or more commands for activating one or more access types associated with the storage device; and an entity for configuring access to the storage device based on at least one of the access profiles. In another embodiment, a system for accessing a storage device is disclosed. The system includes: a host for issuing one or more commands based on access needs to the storage device; and an entity for receiving the commands and configuring access to the storage device based on at least one or more access profiles.

Those skilled in the art will appreciate that the various embodiments discussed above, or portions thereof, can be combined in various ways to create further embodiments encompassed by the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 illustrates a perspective view of an exemplary electronic device within which various embodiments of the present invention may be implemented.

FIG. 2 illustrates an exemplary schematic representation of circuitry that may be included in the electronic device of FIG. 1 .

FIG3 illustrates a flow chart of an exemplary embodiment of the present invention.

FIG4 illustrates a flow chart of another exemplary embodiment of the present invention.

FIG5 illustrates an exemplary apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION

In the following description, for purposes of explanation and non-limiting, details and descriptions are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be implemented in other embodiments that depart from these details and descriptions.

The problem of configuring storage devices for use in different environments has been conventionally solved by using separate storage devices in the system for different use cases. For example, a system can utilize a large capacity storage device separate from the system storage device to accommodate different memory access commands.

Various embodiments of the present invention disclose methods, systems, and devices for enabling runtime configuration of a storage device according to a specific memory access profile. This configuration can be implemented for a portion of a storage device, a partition of a storage device, or even a single storage location on a storage device. Because the system accessing the storage device knows or can determine the type of memory access required (e.g., whether it is a read, write, erase, modify attribute, random, or sequential operation), it can issue commands to configure the storage device according to an access profile that is optimized/most suitable for a specific access command. Such an access profile can, for example, be adapted to optimize data throughput, lifespan, and/or power consumption associated with a specific use of the storage device. In addition, according to embodiments of the present invention, a default access profile can be defined to configure the storage device when, for example, a device or system is initially booted. While providing a starting point for potential future modifications, such a default profile can be pre-selected to accommodate the most likely access needs for the storage device. This profile can remain in effect until the storage device loses power, or, according to embodiments of the present invention, it can be replaced by another profile.

According to embodiments of the present invention, information about the nature and type of memory access allows the storage device to organize itself in a manner that is most suitable for a particular access command, resulting in improved performance and higher reliability. These improvements are generally due to the elimination of background operations and unnecessary data fusion normally associated with conventional memory access methods. Although both random and continuous memory access modes are effective, the techniques of various embodiments of the present invention may be more effective in optimizing continuous memory access operations, where background processing and data fusion are richer. These optimizations further extend the life of the storage device and result in reduced energy consumption of the device.

Embodiments of the present invention further enable the use of the same storage device as both bulk storage memory and system memory, thereby eliminating the need for separate storage devices as used in prior art systems. For example, the use of a single eMMC memory can accommodate all non-volatile storage needs of a system, where operating system images, user data, and other parameters can be stored on the same device. Similarly, in multimedia applications that require very high-density bulk storage devices (e.g., on the order of several gigabytes), the same storage device can be used to store various types of user applications, operating systems, and other system data files. It is expected that this merger will further encourage the adoption of standardized storage devices with higher yields and ultimately lead to lower-cost storage devices. The emergence of such a cost-effective single storage device is particularly beneficial for the development of mobile devices where size and cost constraints are most important.

According to one embodiment of the present invention, as shown in Figure 5, storage device 500 may include physical memory 502, which has one or more registers 504 for accommodating predefined access profiles, and the predefined access profiles are used to optimize the storage device. Storage device 500 may further include receiving means 510, which is suitable for receiving one or more commands for activating a specific access profile through a communication interface 512. In order to facilitate understanding of this embodiment, receiving means 510 is illustrated as a separate part comprising a controller 508. However, it should be understood that receiving means 510 and controller 508 can also be implemented as a single entity. When receiving one or more commands, controller 508 can configure storage device 500 according to one or more access profiles residing in storage register 504. Communication between controller 508 and physical memory 502 can be carried out through interface 506.

By way of example and not limitation, one predefined access profile may be a burst mode profile, which facilitates high-speed transfers of large data blocks and provides a "ready" indication to the host before or after such transfers. To minimize transfer time, required flash memory management operations may occur at a convenient time after the transfer, for example, when no other activity or memory access operations are occurring. Another example of an access profile includes a random mode profile, which enables fast access to short, random memory locations on the device. A storage device according to an embodiment of the present invention may further include another register for containing a currently active access profile. This profile (which may be any of the supported predefined profiles) governs current access operations to the storage device. For example, such a register may include a default profile that is activated during booting of the host system and/or powering up of the storage device. This active profile may remain in effect until the storage device is powered down, or, according to an embodiment of the present invention, it may be replaced by another profile. By replacing the contents of the currently active profile register with one of the predefined profiles residing on the first set of registers, the runtime configuration capability of the storage device according to the present invention is achieved. Therefore, when a new type of memory access is required, a command can be issued to activate the appropriate profile. The command can activate any one of the predefined access profiles, including but not limited to the default profile.

According to another embodiment, various access profiles can be updated or uploaded to the storage device. For example, an existing access profile can be expanded (or completely replaced with a new version) to add or remove specific features and functionality. Alternatively or additionally, an entirely new access profile can be uploaded to the storage device, thereby increasing the number of available access profiles that can be readily used to configure the storage device. By way of example and not limitation, the access profile can be implemented as a binary file that further includes the logic required to implement the access profile. In this way, the access profile can be considered to be a part of the storage device firmware responsible for handling specific access needs in an optimized manner.

Figures 1 and 2 illustrate a representative electronic device 12 within which embodiments of the present invention may be implemented. However, it should be understood that the present invention is not intended to be limited to one particular type of device. In fact, various embodiments of the present invention may be readily adapted for use in any standalone or embedded system that includes or accesses a storage device. The electronic device 12 of Figures 1 and 2 includes a housing 30, a display 32 in the form of a liquid crystal display, a keypad 34, a loudspeaker 36, an earpiece 38, a battery 40, an infrared port 42, an antenna 44, a smart card 46 in the form of a UICC according to one embodiment, a card reader 48, a radio interface circuit 52, a codec circuit 54, a controller 56, and a memory 58. The various circuits and components are all of a type well known in the art, such as Nokia's range of mobile phones.

FIG3 is an example flow chart illustrating the runtime configuration capabilities of a storage device according to an embodiment of the present invention. As shown in FIG3 , when the system is bootstrapped in step 100, in step 102, the storage device according to an embodiment of the present invention organizes itself according to a default profile. The exemplary default profile used in FIG3 configures the storage device to accommodate reading large sequential data from the storage device. In step 104, the system reads a large amount of sequential data, which may include, for example, the operating system of the host device. Upon completion of the large read operation, in step 106, the system enters an idle state. Since most memory access operations during the idle state are likely to involve short random read/write operations, in step 108, the storage device is instructed to activate an access profile for reading/writing short random data. In step 110, the system requests a large sequential read/write. By way of example and not limitation, this need may arise when the system is connected to an external mass storage device. Such a mass storage device may, for example, include a standalone storage device such as a USB memory device, or a PC or other electronic device including one or more mass storage components. In anticipation of large data transfers to/from an external storage device, in step 112, a storage device according to an embodiment of the present invention receives a command to activate an access profile optimized for reading/writing large, sequential data. In step 114, the system performs at least a portion of the large, sequential read/write transfer. While the large data access operation can be completed without further interruption, in one exemplary embodiment, the system of the present invention may need to access the storage device using short, random I/O access cycles, as illustrated in step 116. According to one embodiment of the present invention, in step 118, the storage device may receive a command to suspend its current access profile (which is optimized for reading/writing long, sequential data) and activate an alternate access profile optimized for reading/writing short, random data. When the system completes the short memory access operation in step 120, in step 122, the storage device may receive a subsequent command to revert to the access profile optimized for reading/writing large, sequential data. Then, in step 124, the system may resume reading/writing large, sequential data.

As described above, the exemplary embodiment of the present invention, as shown in FIG3 , suspends large data transfers while performing short I/O access operations. However, in some applications, performing two or more memory access operations in parallel may be advantageous. To this end, FIG4 illustrates an alternative embodiment of the present invention, according to which two or more memory access operations (and their corresponding access profiles) can be implemented in parallel. In FIG4 , steps 200 to 216 represent operations similar to their counterparts in FIG3 . Specifically, when bootstrapping in step 200, in step 202, the storage device according to the embodiment of the present invention organizes itself according to a default profile. The exemplary default profile used in FIG4 configures the storage device to adapt to reading large continuous data from the storage device. In step 204, the system reads a large amount of continuous data, which may, for example, include the operating system of the host device. Upon completion of the large read operation, in step 206, the system enters an idle state. Since most memory access operations during the idle state are likely to involve short random read/write operations, in step 208, the storage device is commanded to activate an access profile for reading/writing short random data. Then, in step 210, the system may require access to a large continuous read/write. This need may, for example, occur when preparing for a large data transfer to/from an external storage device. In step 212, a storage device according to an embodiment of the present invention receives a command to activate an access profile optimized for reading/writing large continuous data. Before the system needs for a short read/write access cycle to the storage device in step 216, the system performs at least a portion of the large continuous read/write transfer in step 214. Compared to the example embodiment of the present invention according to FIG3, in step 220, a parallel access profile for reading/writing short random data is activated by commanding the storage device according to an embodiment of the present invention, and the present embodiment according to FIG4 is adapted to two memory access modes. Therefore, although the system continues to read/write large continuous data in step 218, it can simultaneously (or in an alternating manner) perform short memory access operations in step 222.

Although the embodiment of the present invention according to FIG. 4 is described only with respect to two simultaneous access profiles, it should be understood that similar operations can be performed to allow more than two access profiles to be implemented in parallel. A specific parallel implementation of the memory access profile can be implemented in a format compatible with the current JEDEC JC64 eMMC version 4.3 (JESD84). JEDEC eMMC is a standardized mass storage device that includes a memory and a controller device. The controller handles block management functions associated with the memory, such as logical block allocation and wear leveling. Communication between the memory and the host device is also handled by the controller according to a standard protocol. Among other signals, the protocol defines a bidirectional command signal, CMD, which is used for device initialization and the transmission of commands between the host and the storage device. More specifically, CMD23 (SET_BLOCK_COUNT) defines the number of blocks (read/write) and reliable writer parameters (write) for block read/write commands. CMD23 includes a 32-bit argument field, where bits 15 to 0 are allocated to set the number of blocks for the corresponding read/write command, and bits 30 to 16 are designated as padding bits. According to one embodiment of the present invention, these padding bits can be used to specify different access profiles for the storage device. By way of example and not limitation, one profile can be defined as a burst profile mode, which corresponds to a rapid, continuous data access mode. When in burst profile mode, the storage device can immediately indicate "exit busy" after receiving all data and set the transfer mode to "transfer state," thereby facilitating faster subsequent access by the host. In addition, while the command corresponding to the first access profile is still executing, the storage device can also enable the host to send additional commands corresponding to different access profiles. In this way, the degree of parallelism in I/O operations is established. In addition, access priority levels can be defined to resolve access conflicts (where two or more profiles run in parallel and require simultaneous access to the same storage resource). Examples of such storage resources include RAM buffers, flash buses, and other storage resources.

According to another embodiment of the present invention, the access profile associated with the media device can be adapted to include different control and/or setting profiles associated with different partitions of the storage device. Such partitions can include logical or physical partitions of the storage device. For example, one partition can be configured for random read/write operations, while another partition can be configured to provide sequential access.

According to another embodiment of the present invention, a memory access (e.g., I/O read/write) command can be configured to include a metadata portion for specifying a preferred access profile corresponding to the access command. For example, a system according to the present invention can recognize that an address is being continuously and frequently updated, and therefore, it can set an appropriate access profile for the memory command. Depending on its internal implementation and capabilities, the storage device can map such continuous and specific access operations to specific portions of physical memory with special characteristics. For example, the mapping can be to a more persistent and performance-efficient portion of physical memory, a portion of memory that utilizes a specific storage technology, or to a separate physical chip that is more appropriately designed for such repeated access operations. Thus, the storage device firmware can take action based on the access profile requests of an embodiment of the present invention and handle I/O operations in different ways.

Various embodiments of the present invention are also applicable to embedded memory devices such as NAND, mass storage, XiP and similar devices, as well as removable memory cards.

The various embodiments described herein are described in the context of general method steps or processes, which can be implemented in one embodiment by a computer program product embodied in a computer-readable medium and including computer-executable instructions, such as program code, that are executed by a computer in a networked environment. Computer-readable media may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), compact disks (CDs), digital versatile disks (DVDs), etc. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. Computer-executable instructions associated with data structures and program modules represent examples of program code for performing the steps of the methods disclosed herein. A specific sequence of such executable instructions or associated data structures represents an example of corresponding actions for implementing the functions described in such steps or processes.

The foregoing description of the embodiments has been presented for the purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the embodiments of the invention to the exact form disclosed, and in view of the above teachings, modifications and variations are possible or can be obtained from the implementation of the various embodiments. The embodiments discussed herein are selected and described in order to explain the principles and properties of the various embodiments and their practical application, so as to enable those skilled in the art to utilize the present invention in various embodiments and with various modifications as are suitable for the intended specific use. The features of the embodiments described herein may be combined in all possible combinations of methods, devices, modules, systems, and computer program products.

Claims (51)

1. A storage device comprising: One or more registers are used to store one or more predefined access profiles associated with the storage device, the one or more predefined access profiles being used to determine how to configure access to the storage device for at least one use, the one or more predefined access profiles including one or more of sequential read, sequential write, random read, or random write access modes; The controller is configured as follows: Receive at least one first command to activate at least one of the one or more predefined access profiles; and Receive at least one access command that specifies at least one predefined access profile from the one or more predefined access profiles, such that at least a portion of the storage device is configured for the at least one use according to the at least one predefined access profile from the one or more predefined access profiles. 2. The storage device of claim 1, wherein the at least one first command activates two or more of the predefined access profiles in parallel. 3. The storage device of claim 1, wherein at least one of the one or more predefined access profiles includes a default access profile. 4. The storage device according to claim 1, wherein the storage device includes an embedded multimedia card (eMMC) device. 5. The storage device of claim 1, wherein the controller is configured to perform two or more simultaneous memory access operations. 6. The storage device of claim 5, wherein the controller is configured to assign access priority levels to resolve conflicting memory access operations. 7. The storage device of claim 1, wherein the controller is configured to alternate between two or more simultaneous memory access operations. 8. The storage device of claim 7, wherein the controller is configured to assign access priority levels to resolve conflicting alternating memory access operations. 9. The storage device of claim 1, wherein the one or more registers include a plurality of registers for storing a plurality of the predefined access profiles. 10. A storage device comprising: One or more predefined access profiles associated with the storage device, used to determine how to configure access to the storage device for at least one use of the storage device; and The controller is configured as follows: Receive at least one first command to activate at least one of the one or more predefined access profiles associated with the storage device; and Receive at least one access command that specifies at least one predefined access profile from the one or more predefined access profiles, such that at least a portion of the storage device is configured for the at least one use according to the at least one predefined access profile from the one or more predefined access profiles. 11. The storage device of claim 10, wherein the at least one first command activates two or more access profiles in parallel. 12. The storage device of claim 10, wherein at least one of the one or more predefined access profiles includes a default access profile. 13. The storage device of claim 10, wherein the storage device includes an embedded multimedia card (eMMC) device. 14. The storage device of claim 10, wherein the controller is configured to perform two or more simultaneous memory access operations. 15. The storage device of claim 14, wherein the controller is configured to assign access priority levels to resolve conflicting memory access operations. 16. The storage device of claim 10, wherein the controller is configured to alternate between two or more simultaneous memory access operations. 17. The storage device of claim 16, wherein the controller is configured to assign access priority levels to resolve conflicting alternating memory access operations. 18. A method for configuring access to a storage device, comprising: Receive at least one first command to activate at least one predefined access profile from one or more predefined access profiles associated with the storage device, the one or more predefined access profiles being stored in one or more registers, the one or more predefined access profiles determining how to configure access to the storage device for at least one use of the storage device; and Receive at least one access command that specifies at least one predefined access profile from the one or more predefined access profiles, such that at least a portion of the storage device is configured for the at least one use according to the at least one predefined access profile from the one or more predefined access profiles. 19. The method of claim 18, wherein receiving the at least one first command activates two or more access profiles in parallel. 20. The method of claim 18, wherein at least one of the one or more predefined access profiles includes a default access profile. 21. The method of claim 18, wherein the storage device includes an embedded multimedia card (eMMC) device. 22. The method of claim 18, further comprising performing two or more memory access operations simultaneously. 23. The method of claim 22, further comprising allocating access priority levels to resolve conflicting memory access operations. 24. The method of claim 18, further comprising alternating two or more simultaneous memory access operations. 25. The method of claim 24, further comprising assigning access priority levels to resolve conflicting alternating memory access operations. 26. The method of claim 18, wherein the one or more registers include a plurality of registers for storing a plurality of the predefined access profiles. 27. A method for configuring access to a storage device, comprising: Receive at least one first command to activate at least one of one or more predefined access profiles associated with the storage device, the one or more predefined access profiles determining how to configure access to the storage device for at least one use of the storage device, the one or more predefined access profiles including one or more of sequential read or sequential write access modes; and Receive at least one access command that specifies at least one predefined access profile from the one or more predefined access profiles, such that at least a portion of the storage device is configured for the at least one use according to the at least one predefined access profile from the one or more predefined access profiles. 28. The method of claim 27, wherein receiving the at least one first command activates two or more access profiles in parallel. 29. The method of claim 27, wherein at least one of the one or more predefined access profiles includes a default access profile. 30. The method of claim 27, wherein the storage device includes an embedded multimedia card (eMMC) device. 31. The method of claim 27, further comprising performing two or more memory access operations simultaneously. 32. The method of claim 31, further comprising allocating access priority levels to resolve conflicting memory access operations. 33. The method of claim 27, further comprising alternating two or more simultaneous memory access operations. 34. The method of claim 33, further comprising assigning access priority levels to resolve conflicting alternating memory access operations. 35. A host device, comprising: An interface that couples the host device to the storage device; and The controller, configured via logical instructions, is to perform actions including the following: At least one first command is sent from the host device to the storage device to activate at least one predefined access profile from one or more predefined access profiles associated with the storage device, the one or more predefined access profiles being stored in one or more registers of the storage device, the one or more predefined access profiles determining how to configure access to the storage device for at least one use of the storage device; and Send at least one access command that specifies at least one predefined access profile from the one or more predefined access profiles, such that at least a portion of the storage device is configured for the at least one use according to the at least one predefined access profile from the one or more predefined access profiles. 36. The host device of claim 35, wherein sending the at least one first command activates two or more access profiles in parallel. 37. The host device of claim 35, wherein at least one of the one or more predefined access profiles includes a default access profile. 38. The host device of claim 35, wherein the storage device includes an embedded multimedia card (eMMC) device. 39. The host device of claim 35, wherein at least one of the one or more predefined access profiles configures the controller to perform two or more memory access operations simultaneously. 40. The host device of claim 35, wherein at least one of the one or more predefined access profiles configures the controller to assign access priority levels in order to resolve conflicting memory access operations. 41. The host device of claim 35, wherein at least one of the one or more predefined access profiles configures the controller to alternate between two or more simultaneous memory access operations. 42. The host device of claim 35, wherein at least one of the one or more predefined access profiles configures the controller to assign access priority levels in order to resolve conflicting alternating memory access operations. 43. The host device of claim 35, wherein the one or more registers include a plurality of registers for storing a plurality of the predefined access profiles. 44. A host device, comprising: An interface that couples the host device to the storage device; and The controller, configured via logical instructions, is to perform actions including the following: At least one first command is sent from the host device to a storage device connected to the host device, the at least one first command being used to activate at least one predefined access profile from one or more predefined access profiles associated with the storage device, the one or more predefined access profiles determining how to configure access to the storage device for at least one use of the storage device; and Send at least one access command that specifies at least one predefined access profile from the one or more predefined access profiles, such that at least a portion of the storage device is configured for the at least one use according to the at least one predefined access profile from the one or more predefined access profiles. 45. The host device of claim 44, wherein sending the at least one first command activates two or more access profiles in parallel. 46. The host device of claim 44, wherein at least one of the one or more predefined access profiles includes a default access profile. 47. The host device of claim 44, wherein the storage device includes an embedded multimedia card (eMMC) device. 48. The host device of claim 44, wherein at least one of the one or more predefined access profiles configures the controller to perform two or more memory access operations simultaneously. 49. The host device of claim 48, wherein at least one of the one or more predefined access profiles configures the controller to assign access priority levels in order to resolve conflicting memory access operations. 50. The host device of claim 44, wherein at least one of the one or more predefined access profiles configures the controller to alternate between two or more simultaneous memory access operations. 51. The host device of claim 50, wherein at least one of the one or more predefined access profiles configures the controller to assign access priority levels in order to resolve conflicting alternating memory access operations.