parisc: Retrieve and display the PDC PAT capabilities

Signed-off-by: Helge Deller <[email protected]>

Author: hdeller

arch/parisc/include/asm/pdc.h

@@ -11,6 +11,7 @@ extern int parisc_narrow_firmware;
 extern int pdc_type;
 extern unsigned long parisc_cell_num; /* cell number the CPU runs on (PAT) */
 extern unsigned long parisc_cell_loc; /* cell location of CPU (PAT)	   */
+extern unsigned long parisc_pat_pdc_cap; /* PDC capabilities (PAT) */
 
 /* Values for pdc_type */
 #define PDC_TYPE_ILLEGAL	-1

arch/parisc/kernel/inventory.c

@@ -43,6 +43,7 @@ int pdc_type __read_mostly = PDC_TYPE_ILLEGAL;
 /* cell number and location (PAT firmware only) */
 unsigned long parisc_cell_num __read_mostly;
 unsigned long parisc_cell_loc __read_mostly;
+unsigned long parisc_pat_pdc_cap __read_mostly;
 
 
 void __init setup_pdc(void)
@@ -81,12 +82,21 @@ void __init setup_pdc(void)
 #ifdef CONFIG_64BIT
 	status = pdc_pat_cell_get_number(&cell_info);
 	if (status == PDC_OK) {
+		unsigned long legacy_rev, pat_rev;
 		pdc_type = PDC_TYPE_PAT;
 		pr_cont("64 bit PAT.\n");
 		parisc_cell_num = cell_info.cell_num;
 		parisc_cell_loc = cell_info.cell_loc;
 		pr_info("PAT: Running on cell %lu and location %lu.\n",
 			parisc_cell_num, parisc_cell_loc);
+		status = pdc_pat_pd_get_pdc_revisions(&legacy_rev,
+			&pat_rev, &parisc_pat_pdc_cap);
+		pr_info("PAT: legacy revision 0x%lx, pat_rev 0x%lx, pdc_cap 0x%lx, S-PTLB %d, HPMC_RENDEZ %d.\n",
+			legacy_rev, pat_rev, parisc_pat_pdc_cap,
+			parisc_pat_pdc_cap
+			 & PDC_PAT_CAPABILITY_BIT_SIMULTANEOUS_PTLB ? 1:0,
+			parisc_pat_pdc_cap
+			 & PDC_PAT_CAPABILITY_BIT_PDC_HPMC_RENDEZ   ? 1:0);
 		return;
 	}
 #endif