/* * POLARIS is the internal name for a core logic chipset which provides * memory controller and PCI access for the 21164PC chip based systems. * * This file is based on: * * Polaris System Controller * Device Functional Specification * 22-Jan-98 * Rev. 4.2 *
*/
/* The Polaris command/status registers live in PCI Config space for * bus 0/device 0. As such, they may be bytes, words, or doublewords.
*/ #define POLARIS_W_VENID (POLARIS_DENSE_CONFIG_BASE) #define POLARIS_W_DEVID (POLARIS_DENSE_CONFIG_BASE+2) #define POLARIS_W_CMD (POLARIS_DENSE_CONFIG_BASE+4) #define POLARIS_W_STATUS (POLARIS_DENSE_CONFIG_BASE+6)
/* * I/O functions: * * POLARIS, the PCI/memory support chipset for the PCA56 (21164PC) * processors, can use either a sparse address mapping scheme, or the * so-called byte-word PCI address space, to get at PCI memory and I/O. * * However, we will support only the BWX form.
*/
/* * Memory functions. Polaris allows all accesses (byte/word * as well as long/quad) to be done through dense space. * * We will only support DENSE access via BWX insns.
*/
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